Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig
new file mode 100644
index 0000000..0561d02
--- /dev/null
+++ b/drivers/usb/class/Kconfig
@@ -0,0 +1,86 @@
+#
+# USB Class driver configuration
+#
+comment "USB Device Class drivers"
+ depends on USB
+
+config USB_AUDIO
+ tristate "USB Audio support"
+ depends on USB && SOUND
+ help
+ Say Y here if you want to connect USB audio equipment such as
+ speakers to your computer's USB port. You only need this if you use
+ the OSS sound driver; ALSA has its own option for usb audio support.
+
+ To compile this driver as a module, choose M here: the
+ module will be called audio.
+
+comment "USB Bluetooth TTY can only be used with disabled Bluetooth subsystem"
+ depends on USB && BT
+
+config USB_BLUETOOTH_TTY
+ tristate "USB Bluetooth TTY support"
+ depends on USB && BT=n
+ ---help---
+ This driver implements a nonstandard tty interface to a Bluetooth
+ device that can be used only by specialized Bluetooth HCI software.
+
+ Say Y here if you want to use OpenBT Bluetooth stack (available
+ at <http://developer.axis.com/software>), or other TTY based
+ Bluetooth stacks, and want to connect a USB Bluetooth device
+ to your computer's USB port.
+
+ Do *not* enable this driver if you want to use generic Linux
+ Bluetooth support.
+
+ If in doubt, say N here.
+
+ To compile this driver as a module, choose M here: the
+ module will be called bluetty.
+
+config USB_MIDI
+ tristate "USB MIDI support"
+ depends on USB && SOUND
+ ---help---
+ Say Y here if you want to connect a USB MIDI device to your
+ computer's USB port. This driver is for devices that comply with
+ 'Universal Serial Bus Device Class Definition for MIDI Device'.
+
+ The following devices are known to work:
+ * Steinberg USB2MIDI
+ * Roland MPU64
+ * Roland PC-300
+ * Roland SC8850
+ * Roland UM-1
+ * Roland UM-2
+ * Roland UA-100
+ * Yamaha MU1000
+
+ To compile this driver as a module, choose M here: the
+ module will be called usb-midi.
+
+config USB_ACM
+ tristate "USB Modem (CDC ACM) support"
+ depends on USB
+ ---help---
+ This driver supports USB modems and ISDN adapters which support the
+ Communication Device Class Abstract Control Model interface.
+ Please read <file:Documentation/usb/acm.txt> for details.
+
+ If your modem only reports "Cls=ff(vend.)" in the descriptors in
+ /proc/bus/usb/devices, then your modem will not work with this
+ driver.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cdc-acm.
+
+config USB_PRINTER
+ tristate "USB Printer support"
+ depends on USB
+ help
+ Say Y here if you want to connect a USB printer to your computer's
+ USB port.
+
+ To compile this driver as a module, choose M here: the
+ module will be called usblp.
+
diff --git a/drivers/usb/class/Makefile b/drivers/usb/class/Makefile
new file mode 100644
index 0000000..971e549
--- /dev/null
+++ b/drivers/usb/class/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for USB Class drivers
+# (one step up from the misc category)
+#
+
+obj-$(CONFIG_USB_ACM) += cdc-acm.o
+obj-$(CONFIG_USB_AUDIO) += audio.o
+obj-$(CONFIG_USB_BLUETOOTH_TTY) += bluetty.o
+obj-$(CONFIG_USB_MIDI) += usb-midi.o
+obj-$(CONFIG_USB_PRINTER) += usblp.o
diff --git a/drivers/usb/class/audio.c b/drivers/usb/class/audio.c
new file mode 100644
index 0000000..f432b7d
--- /dev/null
+++ b/drivers/usb/class/audio.c
@@ -0,0 +1,3882 @@
+/*****************************************************************************/
+
+/*
+ * audio.c -- USB Audio Class driver
+ *
+ * Copyright (C) 1999, 2000, 2001, 2003, 2004
+ * Alan Cox (alan@lxorguk.ukuu.org.uk)
+ * Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Debugging:
+ * Use the 'lsusb' utility to dump the descriptors.
+ *
+ * 1999-09-07: Alan Cox
+ * Parsing Audio descriptor patch
+ * 1999-09-08: Thomas Sailer
+ * Added OSS compatible data io functions; both parts of the
+ * driver remain to be glued together
+ * 1999-09-10: Thomas Sailer
+ * Beautified the driver. Added sample format conversions.
+ * Still not properly glued with the parsing code.
+ * The parsing code seems to have its problems btw,
+ * Since it parses all available configs but doesn't
+ * store which iface/altsetting belongs to which config.
+ * 1999-09-20: Thomas Sailer
+ * Threw out Alan's parsing code and implemented my own one.
+ * You cannot reasonnably linearly parse audio descriptors,
+ * especially the AudioClass descriptors have to be considered
+ * pointer lists. Mixer parsing untested, due to lack of device.
+ * First stab at synch pipe implementation, the Dallas USB DAC
+ * wants to use an Asynch out pipe. usb_audio_state now basically
+ * only contains lists of mixer and wave devices. We can therefore
+ * now have multiple mixer/wave devices per USB device.
+ * 1999-10-28: Thomas Sailer
+ * Converted to URB API. Fixed a taskstate/wakeup semantics mistake
+ * that made the driver consume all available CPU cycles.
+ * Now runs stable on UHCI-Acher/Fliegl/Sailer.
+ * 1999-10-31: Thomas Sailer
+ * Audio can now be unloaded if it is not in use by any mixer
+ * or dsp client (formerly you had to disconnect the audio devices
+ * from the USB port)
+ * Finally, about three months after ordering, my "Maxxtro SPK222"
+ * speakers arrived, isn't disdata a great mail order company 8-)
+ * Parse class specific endpoint descriptor of the audiostreaming
+ * interfaces and take the endpoint attributes from there.
+ * Unbelievably, the Philips USB DAC has a sampling rate range
+ * of over a decade, yet does not support the sampling rate control!
+ * No wonder it sounds so bad, has very audible sampling rate
+ * conversion distortion. Don't try to listen to it using
+ * decent headphones!
+ * "Let's make things better" -> but please Philips start with your
+ * own stuff!!!!
+ * 1999-11-02: Thomas Sailer
+ * It takes the Philips boxes several seconds to acquire synchronisation
+ * that means they won't play short sounds. Should probably maintain
+ * the ISO datastream even if there's nothing to play.
+ * Fix counting the total_bytes counter, RealPlayer G2 depends on it.
+ * 1999-12-20: Thomas Sailer
+ * Fix bad bug in conversion to per interface probing.
+ * disconnect was called multiple times for the audio device,
+ * leading to a premature freeing of the audio structures
+ * 2000-05-13: Thomas Sailer
+ * I don't remember who changed the find_format routine,
+ * but the change was completely broken for the Dallas
+ * chip. Anyway taking sampling rate into account in find_format
+ * is bad and should not be done unless there are devices with
+ * completely broken audio descriptors. Unless someone shows
+ * me such a descriptor, I will not allow find_format to
+ * take the sampling rate into account.
+ * Also, the former find_format made:
+ * - mpg123 play mono instead of stereo
+ * - sox completely fail for wav's with sample rates < 44.1kHz
+ * for the Dallas chip.
+ * Also fix a rather long standing problem with applications that
+ * use "small" writes producing no sound at all.
+ * 2000-05-15: Thomas Sailer
+ * My fears came true, the Philips camera indeed has pretty stupid
+ * audio descriptors.
+ * 2000-05-17: Thomas Sailer
+ * Nemsoft spotted my stupid last minute change, thanks
+ * 2000-05-19: Thomas Sailer
+ * Fixed FEATURE_UNIT thinkos found thanks to the KC Technology
+ * Xtend device. Basically the driver treated FEATURE_UNIT's sourced
+ * by mono terminals as stereo.
+ * 2000-05-20: Thomas Sailer
+ * SELECTOR support (and thus selecting record channels from the mixer).
+ * Somewhat peculiar due to OSS interface limitations. Only works
+ * for channels where a "slider" is already in front of it (i.e.
+ * a MIXER unit or a FEATURE unit with volume capability).
+ * 2000-11-26: Thomas Sailer
+ * Workaround for Dallas DS4201. The DS4201 uses PCM8 as format tag for
+ * its 8 bit modes, but expects signed data (and should therefore have used PCM).
+ * 2001-03-10: Thomas Sailer
+ * provide abs function, prevent picking up a bogus kernel macro
+ * for abs. Bug report by Andrew Morton <andrewm@uow.edu.au>
+ * 2001-06-16: Bryce Nesbitt <bryce@obviously.com>
+ * Fix SNDCTL_DSP_STEREO API violation
+ * 2003-04-08: Oliver Neukum (oliver@neukum.name):
+ * Setting a configuration is done by usbcore and must not be overridden
+ * 2004-02-27: Workaround for broken synch descriptors
+ * 2004-03-07: Alan Stern <stern@rowland.harvard.edu>
+ * Add usb_ifnum_to_if() and usb_altnum_to_altsetting() support.
+ * Use the in-memory descriptors instead of reading them from the device.
+ *
+ */
+
+/*
+ * Strategy:
+ *
+ * Alan Cox and Thomas Sailer are starting to dig at opposite ends and
+ * are hoping to meet in the middle, just like tunnel diggers :)
+ * Alan tackles the descriptor parsing, Thomas the actual data IO and the
+ * OSS compatible interface.
+ *
+ * Data IO implementation issues
+ *
+ * A mmap'able ring buffer per direction is implemented, because
+ * almost every OSS app expects it. It is however impractical to
+ * transmit/receive USB data directly into and out of the ring buffer,
+ * due to alignment and synchronisation issues. Instead, the ring buffer
+ * feeds a constant time delay line that handles the USB issues.
+ *
+ * Now we first try to find an alternate setting that exactly matches
+ * the sample format requested by the user. If we find one, we do not
+ * need to perform any sample rate conversions. If there is no matching
+ * altsetting, we choose the closest one and perform sample format
+ * conversions. We never do sample rate conversion; these are too
+ * expensive to be performed in the kernel.
+ *
+ * Current status: no known HCD-specific issues.
+ *
+ * Generally: Due to the brokenness of the Audio Class spec
+ * it seems generally impossible to write a generic Audio Class driver,
+ * so a reasonable driver should implement the features that are actually
+ * used.
+ *
+ * Parsing implementation issues
+ *
+ * One cannot reasonably parse the AudioClass descriptors linearly.
+ * Therefore the current implementation features routines to look
+ * for a specific descriptor in the descriptor list.
+ *
+ * How does the parsing work? First, all interfaces are searched
+ * for an AudioControl class interface. If found, the config descriptor
+ * that belongs to the current configuration is searched and
+ * the HEADER descriptor is found. It contains a list of
+ * all AudioStreaming and MIDIStreaming devices. This list is then walked,
+ * and all AudioStreaming interfaces are classified into input and output
+ * interfaces (according to the endpoint0 direction in altsetting1) (MIDIStreaming
+ * is currently not supported). The input & output list is then used
+ * to group inputs and outputs together and issued pairwise to the
+ * AudioStreaming class parser. Finally, all OUTPUT_TERMINAL descriptors
+ * are walked and issued to the mixer construction routine.
+ *
+ * The AudioStreaming parser simply enumerates all altsettings belonging
+ * to the specified interface. It looks for AS_GENERAL and FORMAT_TYPE
+ * class specific descriptors to extract the sample format/sample rate
+ * data. Only sample format types PCM and PCM8 are supported right now, and
+ * only FORMAT_TYPE_I is handled. The isochronous data endpoint needs to
+ * be the first endpoint of the interface, and the optional synchronisation
+ * isochronous endpoint the second one.
+ *
+ * Mixer construction works as follows: The various TERMINAL and UNIT
+ * descriptors span a tree from the root (OUTPUT_TERMINAL) through the
+ * intermediate nodes (UNITs) to the leaves (INPUT_TERMINAL). We walk
+ * that tree in a depth first manner. FEATURE_UNITs may contribute volume,
+ * bass and treble sliders to the mixer, MIXER_UNITs volume sliders.
+ * The terminal type encoded in the INPUT_TERMINALs feeds a heuristic
+ * to determine "meaningful" OSS slider numbers, however we will see
+ * how well this works in practice. Other features are not used at the
+ * moment, they seem less often used. Also, it seems difficult at least
+ * to construct recording source switches from SELECTOR_UNITs, but
+ * since there are not many USB ADC's available, we leave that for later.
+ */
+
+/*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/module.h>
+#include <linux/sound.h>
+#include <linux/soundcard.h>
+#include <linux/list.h>
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/bitops.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <linux/usb.h>
+
+#include "audio.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v1.0.0"
+#define DRIVER_AUTHOR "Alan Cox <alan@lxorguk.ukuu.org.uk>, Thomas Sailer (sailer@ife.ee.ethz.ch)"
+#define DRIVER_DESC "USB Audio Class driver"
+
+#define AUDIO_DEBUG 1
+
+#define SND_DEV_DSP16 5
+
+#define dprintk(x)
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Linked list of all audio devices...
+ */
+static struct list_head audiodevs = LIST_HEAD_INIT(audiodevs);
+static DECLARE_MUTEX(open_sem);
+
+/*
+ * wait queue for processes wanting to open an USB audio device
+ */
+static DECLARE_WAIT_QUEUE_HEAD(open_wait);
+
+
+#define MAXFORMATS MAX_ALT
+#define DMABUFSHIFT 17 /* 128k worth of DMA buffer */
+#define NRSGBUF (1U<<(DMABUFSHIFT-PAGE_SHIFT))
+
+/*
+ * This influences:
+ * - Latency
+ * - Interrupt rate
+ * - Synchronisation behaviour
+ * Don't touch this if you don't understand all of the above.
+ */
+#define DESCFRAMES 5
+#define SYNCFRAMES DESCFRAMES
+
+#define MIXFLG_STEREOIN 1
+#define MIXFLG_STEREOOUT 2
+
+struct mixerchannel {
+ __u16 value;
+ __u16 osschannel; /* number of the OSS channel */
+ __s16 minval, maxval;
+ __u16 slctunitid;
+ __u8 unitid;
+ __u8 selector;
+ __u8 chnum;
+ __u8 flags;
+};
+
+struct audioformat {
+ unsigned int format;
+ unsigned int sratelo;
+ unsigned int sratehi;
+ unsigned char altsetting;
+ unsigned char attributes;
+};
+
+struct dmabuf {
+ /* buffer data format */
+ unsigned int format;
+ unsigned int srate;
+ /* physical buffer */
+ unsigned char *sgbuf[NRSGBUF];
+ unsigned bufsize;
+ unsigned numfrag;
+ unsigned fragshift;
+ unsigned wrptr, rdptr;
+ unsigned total_bytes;
+ int count;
+ unsigned error; /* over/underrun */
+ wait_queue_head_t wait;
+ /* redundant, but makes calculations easier */
+ unsigned fragsize;
+ unsigned dmasize;
+ /* OSS stuff */
+ unsigned mapped:1;
+ unsigned ready:1;
+ unsigned ossfragshift;
+ int ossmaxfrags;
+ unsigned subdivision;
+};
+
+struct usb_audio_state;
+
+#define FLG_URB0RUNNING 1
+#define FLG_URB1RUNNING 2
+#define FLG_SYNC0RUNNING 4
+#define FLG_SYNC1RUNNING 8
+#define FLG_RUNNING 16
+#define FLG_CONNECTED 32
+
+struct my_data_urb {
+ struct urb *urb;
+};
+
+struct my_sync_urb {
+ struct urb *urb;
+};
+
+
+struct usb_audiodev {
+ struct list_head list;
+ struct usb_audio_state *state;
+
+ /* soundcore stuff */
+ int dev_audio;
+
+ /* wave stuff */
+ mode_t open_mode;
+ spinlock_t lock; /* DMA buffer access spinlock */
+
+ struct usbin {
+ int interface; /* Interface number, -1 means not used */
+ unsigned int format; /* USB data format */
+ unsigned int datapipe; /* the data input pipe */
+ unsigned int syncpipe; /* the synchronisation pipe - 0 for anything but adaptive IN mode */
+ unsigned int syncinterval; /* P for adaptive IN mode, 0 otherwise */
+ unsigned int freqn; /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
+ unsigned int freqmax; /* maximum sampling rate, used for buffer management */
+ unsigned int phase; /* phase accumulator */
+ unsigned int flags; /* see FLG_ defines */
+
+ struct my_data_urb durb[2]; /* ISO descriptors for the data endpoint */
+ struct my_sync_urb surb[2]; /* ISO sync pipe descriptor if needed */
+
+ struct dmabuf dma;
+ } usbin;
+
+ struct usbout {
+ int interface; /* Interface number, -1 means not used */
+ unsigned int format; /* USB data format */
+ unsigned int datapipe; /* the data input pipe */
+ unsigned int syncpipe; /* the synchronisation pipe - 0 for anything but asynchronous OUT mode */
+ unsigned int syncinterval; /* P for asynchronous OUT mode, 0 otherwise */
+ unsigned int freqn; /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
+ unsigned int freqm; /* momentary sampling rate in USB format, i.e. fs/1000 in Q10.14 */
+ unsigned int freqmax; /* maximum sampling rate, used for buffer management */
+ unsigned int phase; /* phase accumulator */
+ unsigned int flags; /* see FLG_ defines */
+
+ struct my_data_urb durb[2]; /* ISO descriptors for the data endpoint */
+ struct my_sync_urb surb[2]; /* ISO sync pipe descriptor if needed */
+
+ struct dmabuf dma;
+ } usbout;
+
+
+ unsigned int numfmtin, numfmtout;
+ struct audioformat fmtin[MAXFORMATS];
+ struct audioformat fmtout[MAXFORMATS];
+};
+
+struct usb_mixerdev {
+ struct list_head list;
+ struct usb_audio_state *state;
+
+ /* soundcore stuff */
+ int dev_mixer;
+
+ unsigned char iface; /* interface number of the AudioControl interface */
+
+ /* USB format descriptions */
+ unsigned int numch, modcnt;
+
+ /* mixch is last and gets allocated dynamically */
+ struct mixerchannel ch[0];
+};
+
+struct usb_audio_state {
+ struct list_head audiodev;
+
+ /* USB device */
+ struct usb_device *usbdev;
+
+ struct list_head audiolist;
+ struct list_head mixerlist;
+
+ unsigned count; /* usage counter; NOTE: the usb stack is also considered a user */
+};
+
+/* private audio format extensions */
+#define AFMT_STEREO 0x80000000
+#define AFMT_ISSTEREO(x) ((x) & AFMT_STEREO)
+#define AFMT_IS16BIT(x) ((x) & (AFMT_S16_LE|AFMT_S16_BE|AFMT_U16_LE|AFMT_U16_BE))
+#define AFMT_ISUNSIGNED(x) ((x) & (AFMT_U8|AFMT_U16_LE|AFMT_U16_BE))
+#define AFMT_BYTESSHIFT(x) ((AFMT_ISSTEREO(x) ? 1 : 0) + (AFMT_IS16BIT(x) ? 1 : 0))
+#define AFMT_BYTES(x) (1<<AFMT_BYTESSHFIT(x))
+
+/* --------------------------------------------------------------------- */
+
+static inline unsigned ld2(unsigned int x)
+{
+ unsigned r = 0;
+
+ if (x >= 0x10000) {
+ x >>= 16;
+ r += 16;
+ }
+ if (x >= 0x100) {
+ x >>= 8;
+ r += 8;
+ }
+ if (x >= 0x10) {
+ x >>= 4;
+ r += 4;
+ }
+ if (x >= 4) {
+ x >>= 2;
+ r += 2;
+ }
+ if (x >= 2)
+ r++;
+ return r;
+}
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * OSS compatible ring buffer management. The ring buffer may be mmap'ed into
+ * an application address space.
+ *
+ * I first used the rvmalloc stuff copied from bttv. Alan Cox did not like it, so
+ * we now use an array of pointers to a single page each. This saves us the
+ * kernel page table manipulations, but we have to do a page table alike mechanism
+ * (though only one indirection) in software.
+ */
+
+static void dmabuf_release(struct dmabuf *db)
+{
+ unsigned int nr;
+ void *p;
+
+ for(nr = 0; nr < NRSGBUF; nr++) {
+ if (!(p = db->sgbuf[nr]))
+ continue;
+ ClearPageReserved(virt_to_page(p));
+ free_page((unsigned long)p);
+ db->sgbuf[nr] = NULL;
+ }
+ db->mapped = db->ready = 0;
+}
+
+static int dmabuf_init(struct dmabuf *db)
+{
+ unsigned int nr, bytepersec, bufs;
+ void *p;
+
+ /* initialize some fields */
+ db->rdptr = db->wrptr = db->total_bytes = db->count = db->error = 0;
+ /* calculate required buffer size */
+ bytepersec = db->srate << AFMT_BYTESSHIFT(db->format);
+ bufs = 1U << DMABUFSHIFT;
+ if (db->ossfragshift) {
+ if ((1000 << db->ossfragshift) < bytepersec)
+ db->fragshift = ld2(bytepersec/1000);
+ else
+ db->fragshift = db->ossfragshift;
+ } else {
+ db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));
+ if (db->fragshift < 3)
+ db->fragshift = 3;
+ }
+ db->numfrag = bufs >> db->fragshift;
+ while (db->numfrag < 4 && db->fragshift > 3) {
+ db->fragshift--;
+ db->numfrag = bufs >> db->fragshift;
+ }
+ db->fragsize = 1 << db->fragshift;
+ if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
+ db->numfrag = db->ossmaxfrags;
+ db->dmasize = db->numfrag << db->fragshift;
+ for(nr = 0; nr < NRSGBUF; nr++) {
+ if (!db->sgbuf[nr]) {
+ p = (void *)get_zeroed_page(GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+ db->sgbuf[nr] = p;
+ SetPageReserved(virt_to_page(p));
+ }
+ memset(db->sgbuf[nr], AFMT_ISUNSIGNED(db->format) ? 0x80 : 0, PAGE_SIZE);
+ if ((nr << PAGE_SHIFT) >= db->dmasize)
+ break;
+ }
+ db->bufsize = nr << PAGE_SHIFT;
+ db->ready = 1;
+ dprintk((KERN_DEBUG "usbaudio: dmabuf_init bytepersec %d bufs %d ossfragshift %d ossmaxfrags %d "
+ "fragshift %d fragsize %d numfrag %d dmasize %d bufsize %d fmt 0x%x srate %d\n",
+ bytepersec, bufs, db->ossfragshift, db->ossmaxfrags, db->fragshift, db->fragsize,
+ db->numfrag, db->dmasize, db->bufsize, db->format, db->srate));
+ return 0;
+}
+
+static int dmabuf_mmap(struct vm_area_struct *vma, struct dmabuf *db, unsigned long start, unsigned long size, pgprot_t prot)
+{
+ unsigned int nr;
+
+ if (!db->ready || db->mapped || (start | size) & (PAGE_SIZE-1) || size > db->bufsize)
+ return -EINVAL;
+ size >>= PAGE_SHIFT;
+ for(nr = 0; nr < size; nr++)
+ if (!db->sgbuf[nr])
+ return -EINVAL;
+ db->mapped = 1;
+ for(nr = 0; nr < size; nr++) {
+ unsigned long pfn;
+
+ pfn = virt_to_phys(db->sgbuf[nr]) >> PAGE_SHIFT;
+ if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, prot))
+ return -EAGAIN;
+ start += PAGE_SIZE;
+ }
+ return 0;
+}
+
+static void dmabuf_copyin(struct dmabuf *db, const void *buffer, unsigned int size)
+{
+ unsigned int pgrem, rem;
+
+ db->total_bytes += size;
+ for (;;) {
+ if (size <= 0)
+ return;
+ pgrem = ((~db->wrptr) & (PAGE_SIZE-1)) + 1;
+ if (pgrem > size)
+ pgrem = size;
+ rem = db->dmasize - db->wrptr;
+ if (pgrem > rem)
+ pgrem = rem;
+ memcpy((db->sgbuf[db->wrptr >> PAGE_SHIFT]) + (db->wrptr & (PAGE_SIZE-1)), buffer, pgrem);
+ size -= pgrem;
+ buffer += pgrem;
+ db->wrptr += pgrem;
+ if (db->wrptr >= db->dmasize)
+ db->wrptr = 0;
+ }
+}
+
+static void dmabuf_copyout(struct dmabuf *db, void *buffer, unsigned int size)
+{
+ unsigned int pgrem, rem;
+
+ db->total_bytes += size;
+ for (;;) {
+ if (size <= 0)
+ return;
+ pgrem = ((~db->rdptr) & (PAGE_SIZE-1)) + 1;
+ if (pgrem > size)
+ pgrem = size;
+ rem = db->dmasize - db->rdptr;
+ if (pgrem > rem)
+ pgrem = rem;
+ memcpy(buffer, (db->sgbuf[db->rdptr >> PAGE_SHIFT]) + (db->rdptr & (PAGE_SIZE-1)), pgrem);
+ size -= pgrem;
+ buffer += pgrem;
+ db->rdptr += pgrem;
+ if (db->rdptr >= db->dmasize)
+ db->rdptr = 0;
+ }
+}
+
+static int dmabuf_copyin_user(struct dmabuf *db, unsigned int ptr, const void __user *buffer, unsigned int size)
+{
+ unsigned int pgrem, rem;
+
+ if (!db->ready || db->mapped)
+ return -EINVAL;
+ for (;;) {
+ if (size <= 0)
+ return 0;
+ pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
+ if (pgrem > size)
+ pgrem = size;
+ rem = db->dmasize - ptr;
+ if (pgrem > rem)
+ pgrem = rem;
+ if (copy_from_user((db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), buffer, pgrem))
+ return -EFAULT;
+ size -= pgrem;
+ buffer += pgrem;
+ ptr += pgrem;
+ if (ptr >= db->dmasize)
+ ptr = 0;
+ }
+}
+
+static int dmabuf_copyout_user(struct dmabuf *db, unsigned int ptr, void __user *buffer, unsigned int size)
+{
+ unsigned int pgrem, rem;
+
+ if (!db->ready || db->mapped)
+ return -EINVAL;
+ for (;;) {
+ if (size <= 0)
+ return 0;
+ pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
+ if (pgrem > size)
+ pgrem = size;
+ rem = db->dmasize - ptr;
+ if (pgrem > rem)
+ pgrem = rem;
+ if (copy_to_user(buffer, (db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), pgrem))
+ return -EFAULT;
+ size -= pgrem;
+ buffer += pgrem;
+ ptr += pgrem;
+ if (ptr >= db->dmasize)
+ ptr = 0;
+ }
+}
+
+/* --------------------------------------------------------------------- */
+/*
+ * USB I/O code. We do sample format conversion if necessary
+ */
+
+static void usbin_stop(struct usb_audiodev *as)
+{
+ struct usbin *u = &as->usbin;
+ unsigned long flags;
+ unsigned int i, notkilled = 1;
+
+ spin_lock_irqsave(&as->lock, flags);
+ u->flags &= ~FLG_RUNNING;
+ i = u->flags;
+ spin_unlock_irqrestore(&as->lock, flags);
+ while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
+ set_current_state(notkilled ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+ spin_lock_irqsave(&as->lock, flags);
+ i = u->flags;
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (notkilled && signal_pending(current)) {
+ if (i & FLG_URB0RUNNING)
+ usb_kill_urb(u->durb[0].urb);
+ if (i & FLG_URB1RUNNING)
+ usb_kill_urb(u->durb[1].urb);
+ if (i & FLG_SYNC0RUNNING)
+ usb_kill_urb(u->surb[0].urb);
+ if (i & FLG_SYNC1RUNNING)
+ usb_kill_urb(u->surb[1].urb);
+ notkilled = 0;
+ }
+ }
+ set_current_state(TASK_RUNNING);
+ if (u->durb[0].urb->transfer_buffer)
+ kfree(u->durb[0].urb->transfer_buffer);
+ if (u->durb[1].urb->transfer_buffer)
+ kfree(u->durb[1].urb->transfer_buffer);
+ if (u->surb[0].urb->transfer_buffer)
+ kfree(u->surb[0].urb->transfer_buffer);
+ if (u->surb[1].urb->transfer_buffer)
+ kfree(u->surb[1].urb->transfer_buffer);
+ u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer =
+ u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
+}
+
+static inline void usbin_release(struct usb_audiodev *as)
+{
+ usbin_stop(as);
+}
+
+static void usbin_disc(struct usb_audiodev *as)
+{
+ struct usbin *u = &as->usbin;
+
+ unsigned long flags;
+
+ spin_lock_irqsave(&as->lock, flags);
+ u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
+ spin_unlock_irqrestore(&as->lock, flags);
+ usbin_stop(as);
+}
+
+static void conversion(const void *ibuf, unsigned int ifmt, void *obuf, unsigned int ofmt, void *tmp, unsigned int scnt)
+{
+ unsigned int cnt, i;
+ __s16 *sp, *sp2, s;
+ unsigned char *bp;
+
+ cnt = scnt;
+ if (AFMT_ISSTEREO(ifmt))
+ cnt <<= 1;
+ sp = ((__s16 *)tmp) + cnt;
+ switch (ifmt & ~AFMT_STEREO) {
+ case AFMT_U8:
+ for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
+ bp--;
+ sp--;
+ *sp = (*bp ^ 0x80) << 8;
+ }
+ break;
+
+ case AFMT_S8:
+ for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
+ bp--;
+ sp--;
+ *sp = *bp << 8;
+ }
+ break;
+
+ case AFMT_U16_LE:
+ for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
+ bp -= 2;
+ sp--;
+ *sp = (bp[0] | (bp[1] << 8)) ^ 0x8000;
+ }
+ break;
+
+ case AFMT_U16_BE:
+ for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
+ bp -= 2;
+ sp--;
+ *sp = (bp[1] | (bp[0] << 8)) ^ 0x8000;
+ }
+ break;
+
+ case AFMT_S16_LE:
+ for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
+ bp -= 2;
+ sp--;
+ *sp = bp[0] | (bp[1] << 8);
+ }
+ break;
+
+ case AFMT_S16_BE:
+ for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
+ bp -= 2;
+ sp--;
+ *sp = bp[1] | (bp[0] << 8);
+ }
+ break;
+ }
+ if (!AFMT_ISSTEREO(ifmt) && AFMT_ISSTEREO(ofmt)) {
+ /* expand from mono to stereo */
+ for (sp = ((__s16 *)tmp)+scnt, sp2 = ((__s16 *)tmp)+2*scnt, i = 0; i < scnt; i++) {
+ sp--;
+ sp2 -= 2;
+ sp2[0] = sp2[1] = sp[0];
+ }
+ }
+ if (AFMT_ISSTEREO(ifmt) && !AFMT_ISSTEREO(ofmt)) {
+ /* contract from stereo to mono */
+ for (sp = sp2 = ((__s16 *)tmp), i = 0; i < scnt; i++, sp++, sp2 += 2)
+ sp[0] = (sp2[0] + sp2[1]) >> 1;
+ }
+ cnt = scnt;
+ if (AFMT_ISSTEREO(ofmt))
+ cnt <<= 1;
+ sp = ((__s16 *)tmp);
+ bp = ((unsigned char *)obuf);
+ switch (ofmt & ~AFMT_STEREO) {
+ case AFMT_U8:
+ for (i = 0; i < cnt; i++, sp++, bp++)
+ *bp = (*sp >> 8) ^ 0x80;
+ break;
+
+ case AFMT_S8:
+ for (i = 0; i < cnt; i++, sp++, bp++)
+ *bp = *sp >> 8;
+ break;
+
+ case AFMT_U16_LE:
+ for (i = 0; i < cnt; i++, sp++, bp += 2) {
+ s = *sp;
+ bp[0] = s;
+ bp[1] = (s >> 8) ^ 0x80;
+ }
+ break;
+
+ case AFMT_U16_BE:
+ for (i = 0; i < cnt; i++, sp++, bp += 2) {
+ s = *sp;
+ bp[1] = s;
+ bp[0] = (s >> 8) ^ 0x80;
+ }
+ break;
+
+ case AFMT_S16_LE:
+ for (i = 0; i < cnt; i++, sp++, bp += 2) {
+ s = *sp;
+ bp[0] = s;
+ bp[1] = s >> 8;
+ }
+ break;
+
+ case AFMT_S16_BE:
+ for (i = 0; i < cnt; i++, sp++, bp += 2) {
+ s = *sp;
+ bp[1] = s;
+ bp[0] = s >> 8;
+ }
+ break;
+ }
+
+}
+
+static void usbin_convert(struct usbin *u, unsigned char *buffer, unsigned int samples)
+{
+ union {
+ __s16 s[64];
+ unsigned char b[0];
+ } tmp;
+ unsigned int scnt, maxs, ufmtsh, dfmtsh;
+
+ ufmtsh = AFMT_BYTESSHIFT(u->format);
+ dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
+ maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
+ while (samples > 0) {
+ scnt = samples;
+ if (scnt > maxs)
+ scnt = maxs;
+ conversion(buffer, u->format, tmp.b, u->dma.format, tmp.b, scnt);
+ dmabuf_copyin(&u->dma, tmp.b, scnt << dfmtsh);
+ buffer += scnt << ufmtsh;
+ samples -= scnt;
+ }
+}
+
+static int usbin_prepare_desc(struct usbin *u, struct urb *urb)
+{
+ unsigned int i, maxsize, offs;
+
+ maxsize = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
+ //printk(KERN_DEBUG "usbin_prepare_desc: maxsize %d freq 0x%x format 0x%x\n", maxsize, u->freqn, u->format);
+ for (i = offs = 0; i < DESCFRAMES; i++, offs += maxsize) {
+ urb->iso_frame_desc[i].length = maxsize;
+ urb->iso_frame_desc[i].offset = offs;
+ }
+ urb->interval = 1;
+ return 0;
+}
+
+/*
+ * return value: 0 if descriptor should be restarted, -1 otherwise
+ * convert sample format on the fly if necessary
+ */
+static int usbin_retire_desc(struct usbin *u, struct urb *urb)
+{
+ unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, dmafree;
+ unsigned char *cp;
+
+ ufmtsh = AFMT_BYTESSHIFT(u->format);
+ dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
+ for (i = 0; i < DESCFRAMES; i++) {
+ cp = ((unsigned char *)urb->transfer_buffer) + urb->iso_frame_desc[i].offset;
+ if (urb->iso_frame_desc[i].status) {
+ dprintk((KERN_DEBUG "usbin_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
+ continue;
+ }
+ scnt = urb->iso_frame_desc[i].actual_length >> ufmtsh;
+ if (!scnt)
+ continue;
+ cnt = scnt << dfmtsh;
+ if (!u->dma.mapped) {
+ dmafree = u->dma.dmasize - u->dma.count;
+ if (cnt > dmafree) {
+ scnt = dmafree >> dfmtsh;
+ cnt = scnt << dfmtsh;
+ err++;
+ }
+ }
+ u->dma.count += cnt;
+ if (u->format == u->dma.format) {
+ /* we do not need format conversion */
+ dprintk((KERN_DEBUG "usbaudio: no sample format conversion\n"));
+ dmabuf_copyin(&u->dma, cp, cnt);
+ } else {
+ /* we need sampling format conversion */
+ dprintk((KERN_DEBUG "usbaudio: sample format conversion %x != %x\n", u->format, u->dma.format));
+ usbin_convert(u, cp, scnt);
+ }
+ }
+ if (err)
+ u->dma.error++;
+ if (u->dma.count >= (signed)u->dma.fragsize)
+ wake_up(&u->dma.wait);
+ return err ? -1 : 0;
+}
+
+static void usbin_completed(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
+ struct usbin *u = &as->usbin;
+ unsigned long flags;
+ unsigned int mask;
+ int suret = 0;
+
+#if 0
+ printk(KERN_DEBUG "usbin_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
+#endif
+ if (urb == u->durb[0].urb)
+ mask = FLG_URB0RUNNING;
+ else if (urb == u->durb[1].urb)
+ mask = FLG_URB1RUNNING;
+ else {
+ mask = 0;
+ printk(KERN_ERR "usbin_completed: panic: unknown URB\n");
+ }
+ urb->dev = as->state->usbdev;
+ spin_lock_irqsave(&as->lock, flags);
+ if (!usbin_retire_desc(u, urb) &&
+ u->flags & FLG_RUNNING &&
+ !usbin_prepare_desc(u, urb) &&
+ (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
+ u->flags |= mask;
+ } else {
+ u->flags &= ~(mask | FLG_RUNNING);
+ wake_up(&u->dma.wait);
+ printk(KERN_DEBUG "usbin_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret);
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+}
+
+/*
+ * we output sync data
+ */
+static int usbin_sync_prepare_desc(struct usbin *u, struct urb *urb)
+{
+ unsigned char *cp = urb->transfer_buffer;
+ unsigned int i, offs;
+
+ for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3, cp += 3) {
+ urb->iso_frame_desc[i].length = 3;
+ urb->iso_frame_desc[i].offset = offs;
+ cp[0] = u->freqn;
+ cp[1] = u->freqn >> 8;
+ cp[2] = u->freqn >> 16;
+ }
+ urb->interval = 1;
+ return 0;
+}
+
+/*
+ * return value: 0 if descriptor should be restarted, -1 otherwise
+ */
+static int usbin_sync_retire_desc(struct usbin *u, struct urb *urb)
+{
+ unsigned int i;
+
+ for (i = 0; i < SYNCFRAMES; i++)
+ if (urb->iso_frame_desc[0].status)
+ dprintk((KERN_DEBUG "usbin_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
+ return 0;
+}
+
+static void usbin_sync_completed(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
+ struct usbin *u = &as->usbin;
+ unsigned long flags;
+ unsigned int mask;
+ int suret = 0;
+
+#if 0
+ printk(KERN_DEBUG "usbin_sync_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
+#endif
+ if (urb == u->surb[0].urb)
+ mask = FLG_SYNC0RUNNING;
+ else if (urb == u->surb[1].urb)
+ mask = FLG_SYNC1RUNNING;
+ else {
+ mask = 0;
+ printk(KERN_ERR "usbin_sync_completed: panic: unknown URB\n");
+ }
+ urb->dev = as->state->usbdev;
+ spin_lock_irqsave(&as->lock, flags);
+ if (!usbin_sync_retire_desc(u, urb) &&
+ u->flags & FLG_RUNNING &&
+ !usbin_sync_prepare_desc(u, urb) &&
+ (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
+ u->flags |= mask;
+ } else {
+ u->flags &= ~(mask | FLG_RUNNING);
+ wake_up(&u->dma.wait);
+ dprintk((KERN_DEBUG "usbin_sync_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+}
+
+static int usbin_start(struct usb_audiodev *as)
+{
+ struct usb_device *dev = as->state->usbdev;
+ struct usbin *u = &as->usbin;
+ struct urb *urb;
+ unsigned long flags;
+ unsigned int maxsze, bufsz;
+
+#if 0
+ printk(KERN_DEBUG "usbin_start: device %d ufmt 0x%08x dfmt 0x%08x srate %d\n",
+ dev->devnum, u->format, u->dma.format, u->dma.srate);
+#endif
+ /* allocate USB storage if not already done */
+ spin_lock_irqsave(&as->lock, flags);
+ if (!(u->flags & FLG_CONNECTED)) {
+ spin_unlock_irqrestore(&as->lock, flags);
+ return -EIO;
+ }
+ if (!(u->flags & FLG_RUNNING)) {
+ spin_unlock_irqrestore(&as->lock, flags);
+ u->freqn = ((u->dma.srate << 11) + 62) / 125; /* this will overflow at approx 2MSPS */
+ u->freqmax = u->freqn + (u->freqn >> 2);
+ u->phase = 0;
+ maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
+ bufsz = DESCFRAMES * maxsze;
+ if (u->durb[0].urb->transfer_buffer)
+ kfree(u->durb[0].urb->transfer_buffer);
+ u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
+ u->durb[0].urb->transfer_buffer_length = bufsz;
+ if (u->durb[1].urb->transfer_buffer)
+ kfree(u->durb[1].urb->transfer_buffer);
+ u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
+ u->durb[1].urb->transfer_buffer_length = bufsz;
+ if (u->syncpipe) {
+ if (u->surb[0].urb->transfer_buffer)
+ kfree(u->surb[0].urb->transfer_buffer);
+ u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
+ u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
+ if (u->surb[1].urb->transfer_buffer)
+ kfree(u->surb[1].urb->transfer_buffer);
+ u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
+ u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
+ }
+ if (!u->durb[0].urb->transfer_buffer || !u->durb[1].urb->transfer_buffer ||
+ (u->syncpipe && (!u->surb[0].urb->transfer_buffer || !u->surb[1].urb->transfer_buffer))) {
+ printk(KERN_ERR "usbaudio: cannot start playback device %d\n", dev->devnum);
+ return 0;
+ }
+ spin_lock_irqsave(&as->lock, flags);
+ }
+ if (u->dma.count >= u->dma.dmasize && !u->dma.mapped) {
+ spin_unlock_irqrestore(&as->lock, flags);
+ return 0;
+ }
+ u->flags |= FLG_RUNNING;
+ if (!(u->flags & FLG_URB0RUNNING)) {
+ urb = u->durb[0].urb;
+ urb->dev = dev;
+ urb->pipe = u->datapipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = DESCFRAMES;
+ urb->context = as;
+ urb->complete = usbin_completed;
+ if (!usbin_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
+ u->flags |= FLG_URB0RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ if (u->flags & FLG_RUNNING && !(u->flags & FLG_URB1RUNNING)) {
+ urb = u->durb[1].urb;
+ urb->dev = dev;
+ urb->pipe = u->datapipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = DESCFRAMES;
+ urb->context = as;
+ urb->complete = usbin_completed;
+ if (!usbin_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
+ u->flags |= FLG_URB1RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ if (u->syncpipe) {
+ if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC0RUNNING)) {
+ urb = u->surb[0].urb;
+ urb->dev = dev;
+ urb->pipe = u->syncpipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = SYNCFRAMES;
+ urb->context = as;
+ urb->complete = usbin_sync_completed;
+ /* stride: u->syncinterval */
+ if (!usbin_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
+ u->flags |= FLG_SYNC0RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC1RUNNING)) {
+ urb = u->surb[1].urb;
+ urb->dev = dev;
+ urb->pipe = u->syncpipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = SYNCFRAMES;
+ urb->context = as;
+ urb->complete = usbin_sync_completed;
+ /* stride: u->syncinterval */
+ if (!usbin_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_KERNEL))
+ u->flags |= FLG_SYNC1RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+ return 0;
+}
+
+static void usbout_stop(struct usb_audiodev *as)
+{
+ struct usbout *u = &as->usbout;
+ unsigned long flags;
+ unsigned int i, notkilled = 1;
+
+ spin_lock_irqsave(&as->lock, flags);
+ u->flags &= ~FLG_RUNNING;
+ i = u->flags;
+ spin_unlock_irqrestore(&as->lock, flags);
+ while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
+ set_current_state(notkilled ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+ spin_lock_irqsave(&as->lock, flags);
+ i = u->flags;
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (notkilled && signal_pending(current)) {
+ if (i & FLG_URB0RUNNING)
+ usb_kill_urb(u->durb[0].urb);
+ if (i & FLG_URB1RUNNING)
+ usb_kill_urb(u->durb[1].urb);
+ if (i & FLG_SYNC0RUNNING)
+ usb_kill_urb(u->surb[0].urb);
+ if (i & FLG_SYNC1RUNNING)
+ usb_kill_urb(u->surb[1].urb);
+ notkilled = 0;
+ }
+ }
+ set_current_state(TASK_RUNNING);
+ if (u->durb[0].urb->transfer_buffer)
+ kfree(u->durb[0].urb->transfer_buffer);
+ if (u->durb[1].urb->transfer_buffer)
+ kfree(u->durb[1].urb->transfer_buffer);
+ if (u->surb[0].urb->transfer_buffer)
+ kfree(u->surb[0].urb->transfer_buffer);
+ if (u->surb[1].urb->transfer_buffer)
+ kfree(u->surb[1].urb->transfer_buffer);
+ u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer =
+ u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
+}
+
+static inline void usbout_release(struct usb_audiodev *as)
+{
+ usbout_stop(as);
+}
+
+static void usbout_disc(struct usb_audiodev *as)
+{
+ struct usbout *u = &as->usbout;
+ unsigned long flags;
+
+ spin_lock_irqsave(&as->lock, flags);
+ u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
+ spin_unlock_irqrestore(&as->lock, flags);
+ usbout_stop(as);
+}
+
+static void usbout_convert(struct usbout *u, unsigned char *buffer, unsigned int samples)
+{
+ union {
+ __s16 s[64];
+ unsigned char b[0];
+ } tmp;
+ unsigned int scnt, maxs, ufmtsh, dfmtsh;
+
+ ufmtsh = AFMT_BYTESSHIFT(u->format);
+ dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
+ maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
+ while (samples > 0) {
+ scnt = samples;
+ if (scnt > maxs)
+ scnt = maxs;
+ dmabuf_copyout(&u->dma, tmp.b, scnt << dfmtsh);
+ conversion(tmp.b, u->dma.format, buffer, u->format, tmp.b, scnt);
+ buffer += scnt << ufmtsh;
+ samples -= scnt;
+ }
+}
+
+static int usbout_prepare_desc(struct usbout *u, struct urb *urb)
+{
+ unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, offs;
+ unsigned char *cp = urb->transfer_buffer;
+
+ ufmtsh = AFMT_BYTESSHIFT(u->format);
+ dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
+ for (i = offs = 0; i < DESCFRAMES; i++) {
+ urb->iso_frame_desc[i].offset = offs;
+ u->phase = (u->phase & 0x3fff) + u->freqm;
+ scnt = u->phase >> 14;
+ if (!scnt) {
+ urb->iso_frame_desc[i].length = 0;
+ continue;
+ }
+ cnt = scnt << dfmtsh;
+ if (!u->dma.mapped) {
+ if (cnt > u->dma.count) {
+ scnt = u->dma.count >> dfmtsh;
+ cnt = scnt << dfmtsh;
+ err++;
+ }
+ u->dma.count -= cnt;
+ } else
+ u->dma.count += cnt;
+ if (u->format == u->dma.format) {
+ /* we do not need format conversion */
+ dmabuf_copyout(&u->dma, cp, cnt);
+ } else {
+ /* we need sampling format conversion */
+ usbout_convert(u, cp, scnt);
+ }
+ cnt = scnt << ufmtsh;
+ urb->iso_frame_desc[i].length = cnt;
+ offs += cnt;
+ cp += cnt;
+ }
+ urb->interval = 1;
+ if (err)
+ u->dma.error++;
+ if (u->dma.mapped) {
+ if (u->dma.count >= (signed)u->dma.fragsize)
+ wake_up(&u->dma.wait);
+ } else {
+ if ((signed)u->dma.dmasize >= u->dma.count + (signed)u->dma.fragsize)
+ wake_up(&u->dma.wait);
+ }
+ return err ? -1 : 0;
+}
+
+/*
+ * return value: 0 if descriptor should be restarted, -1 otherwise
+ */
+static int usbout_retire_desc(struct usbout *u, struct urb *urb)
+{
+ unsigned int i;
+
+ for (i = 0; i < DESCFRAMES; i++) {
+ if (urb->iso_frame_desc[i].status) {
+ dprintk((KERN_DEBUG "usbout_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
+ continue;
+ }
+ }
+ return 0;
+}
+
+static void usbout_completed(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
+ struct usbout *u = &as->usbout;
+ unsigned long flags;
+ unsigned int mask;
+ int suret = 0;
+
+#if 0
+ printk(KERN_DEBUG "usbout_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
+#endif
+ if (urb == u->durb[0].urb)
+ mask = FLG_URB0RUNNING;
+ else if (urb == u->durb[1].urb)
+ mask = FLG_URB1RUNNING;
+ else {
+ mask = 0;
+ printk(KERN_ERR "usbout_completed: panic: unknown URB\n");
+ }
+ urb->dev = as->state->usbdev;
+ spin_lock_irqsave(&as->lock, flags);
+ if (!usbout_retire_desc(u, urb) &&
+ u->flags & FLG_RUNNING &&
+ !usbout_prepare_desc(u, urb) &&
+ (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
+ u->flags |= mask;
+ } else {
+ u->flags &= ~(mask | FLG_RUNNING);
+ wake_up(&u->dma.wait);
+ dprintk((KERN_DEBUG "usbout_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+}
+
+static int usbout_sync_prepare_desc(struct usbout *u, struct urb *urb)
+{
+ unsigned int i, offs;
+
+ for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3) {
+ urb->iso_frame_desc[i].length = 3;
+ urb->iso_frame_desc[i].offset = offs;
+ }
+ urb->interval = 1;
+ return 0;
+}
+
+/*
+ * return value: 0 if descriptor should be restarted, -1 otherwise
+ */
+static int usbout_sync_retire_desc(struct usbout *u, struct urb *urb)
+{
+ unsigned char *cp = urb->transfer_buffer;
+ unsigned int f, i;
+
+ for (i = 0; i < SYNCFRAMES; i++, cp += 3) {
+ if (urb->iso_frame_desc[i].status) {
+ dprintk((KERN_DEBUG "usbout_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
+ continue;
+ }
+ if (urb->iso_frame_desc[i].actual_length < 3) {
+ dprintk((KERN_DEBUG "usbout_sync_retire_desc: frame %u length %d\n", i, urb->iso_frame_desc[i].actual_length));
+ continue;
+ }
+ f = cp[0] | (cp[1] << 8) | (cp[2] << 16);
+ if (abs(f - u->freqn) > (u->freqn >> 3) || f > u->freqmax) {
+ printk(KERN_WARNING "usbout_sync_retire_desc: requested frequency %u (nominal %u) out of range!\n", f, u->freqn);
+ continue;
+ }
+ u->freqm = f;
+ }
+ return 0;
+}
+
+static void usbout_sync_completed(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
+ struct usbout *u = &as->usbout;
+ unsigned long flags;
+ unsigned int mask;
+ int suret = 0;
+
+#if 0
+ printk(KERN_DEBUG "usbout_sync_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
+#endif
+ if (urb == u->surb[0].urb)
+ mask = FLG_SYNC0RUNNING;
+ else if (urb == u->surb[1].urb)
+ mask = FLG_SYNC1RUNNING;
+ else {
+ mask = 0;
+ printk(KERN_ERR "usbout_sync_completed: panic: unknown URB\n");
+ }
+ urb->dev = as->state->usbdev;
+ spin_lock_irqsave(&as->lock, flags);
+ if (!usbout_sync_retire_desc(u, urb) &&
+ u->flags & FLG_RUNNING &&
+ !usbout_sync_prepare_desc(u, urb) &&
+ (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
+ u->flags |= mask;
+ } else {
+ u->flags &= ~(mask | FLG_RUNNING);
+ wake_up(&u->dma.wait);
+ dprintk((KERN_DEBUG "usbout_sync_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret));
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+}
+
+static int usbout_start(struct usb_audiodev *as)
+{
+ struct usb_device *dev = as->state->usbdev;
+ struct usbout *u = &as->usbout;
+ struct urb *urb;
+ unsigned long flags;
+ unsigned int maxsze, bufsz;
+
+#if 0
+ printk(KERN_DEBUG "usbout_start: device %d ufmt 0x%08x dfmt 0x%08x srate %d\n",
+ dev->devnum, u->format, u->dma.format, u->dma.srate);
+#endif
+ /* allocate USB storage if not already done */
+ spin_lock_irqsave(&as->lock, flags);
+ if (!(u->flags & FLG_CONNECTED)) {
+ spin_unlock_irqrestore(&as->lock, flags);
+ return -EIO;
+ }
+ if (!(u->flags & FLG_RUNNING)) {
+ spin_unlock_irqrestore(&as->lock, flags);
+ u->freqn = u->freqm = ((u->dma.srate << 11) + 62) / 125; /* this will overflow at approx 2MSPS */
+ u->freqmax = u->freqn + (u->freqn >> 2);
+ u->phase = 0;
+ maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
+ bufsz = DESCFRAMES * maxsze;
+ if (u->durb[0].urb->transfer_buffer)
+ kfree(u->durb[0].urb->transfer_buffer);
+ u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
+ u->durb[0].urb->transfer_buffer_length = bufsz;
+ if (u->durb[1].urb->transfer_buffer)
+ kfree(u->durb[1].urb->transfer_buffer);
+ u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
+ u->durb[1].urb->transfer_buffer_length = bufsz;
+ if (u->syncpipe) {
+ if (u->surb[0].urb->transfer_buffer)
+ kfree(u->surb[0].urb->transfer_buffer);
+ u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
+ u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
+ if (u->surb[1].urb->transfer_buffer)
+ kfree(u->surb[1].urb->transfer_buffer);
+ u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
+ u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
+ }
+ if (!u->durb[0].urb->transfer_buffer || !u->durb[1].urb->transfer_buffer ||
+ (u->syncpipe && (!u->surb[0].urb->transfer_buffer || !u->surb[1].urb->transfer_buffer))) {
+ printk(KERN_ERR "usbaudio: cannot start playback device %d\n", dev->devnum);
+ return 0;
+ }
+ spin_lock_irqsave(&as->lock, flags);
+ }
+ if (u->dma.count <= 0 && !u->dma.mapped) {
+ spin_unlock_irqrestore(&as->lock, flags);
+ return 0;
+ }
+ u->flags |= FLG_RUNNING;
+ if (!(u->flags & FLG_URB0RUNNING)) {
+ urb = u->durb[0].urb;
+ urb->dev = dev;
+ urb->pipe = u->datapipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = DESCFRAMES;
+ urb->context = as;
+ urb->complete = usbout_completed;
+ if (!usbout_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
+ u->flags |= FLG_URB0RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ if (u->flags & FLG_RUNNING && !(u->flags & FLG_URB1RUNNING)) {
+ urb = u->durb[1].urb;
+ urb->dev = dev;
+ urb->pipe = u->datapipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = DESCFRAMES;
+ urb->context = as;
+ urb->complete = usbout_completed;
+ if (!usbout_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
+ u->flags |= FLG_URB1RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ if (u->syncpipe) {
+ if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC0RUNNING)) {
+ urb = u->surb[0].urb;
+ urb->dev = dev;
+ urb->pipe = u->syncpipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = SYNCFRAMES;
+ urb->context = as;
+ urb->complete = usbout_sync_completed;
+ /* stride: u->syncinterval */
+ if (!usbout_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
+ u->flags |= FLG_SYNC0RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ if (u->flags & FLG_RUNNING && !(u->flags & FLG_SYNC1RUNNING)) {
+ urb = u->surb[1].urb;
+ urb->dev = dev;
+ urb->pipe = u->syncpipe;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->number_of_packets = SYNCFRAMES;
+ urb->context = as;
+ urb->complete = usbout_sync_completed;
+ /* stride: u->syncinterval */
+ if (!usbout_sync_prepare_desc(u, urb) && !usb_submit_urb(urb, GFP_ATOMIC))
+ u->flags |= FLG_SYNC1RUNNING;
+ else
+ u->flags &= ~FLG_RUNNING;
+ }
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+ return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static unsigned int format_goodness(struct audioformat *afp, unsigned int fmt, unsigned int srate)
+{
+ unsigned int g = 0;
+
+ if (srate < afp->sratelo)
+ g += afp->sratelo - srate;
+ if (srate > afp->sratehi)
+ g += srate - afp->sratehi;
+ if (AFMT_ISSTEREO(afp->format) && !AFMT_ISSTEREO(fmt))
+ g += 0x100000;
+ if (!AFMT_ISSTEREO(afp->format) && AFMT_ISSTEREO(fmt))
+ g += 0x400000;
+ if (AFMT_IS16BIT(afp->format) && !AFMT_IS16BIT(fmt))
+ g += 0x100000;
+ if (!AFMT_IS16BIT(afp->format) && AFMT_IS16BIT(fmt))
+ g += 0x400000;
+ return g;
+}
+
+static int find_format(struct audioformat *afp, unsigned int nr, unsigned int fmt, unsigned int srate)
+{
+ unsigned int i, g, gb = ~0;
+ int j = -1; /* default to failure */
+
+ /* find "best" format (according to format_goodness) */
+ for (i = 0; i < nr; i++) {
+ g = format_goodness(&afp[i], fmt, srate);
+ if (g >= gb)
+ continue;
+ j = i;
+ gb = g;
+ }
+ return j;
+}
+
+static int set_format_in(struct usb_audiodev *as)
+{
+ struct usb_device *dev = as->state->usbdev;
+ struct usb_host_interface *alts;
+ struct usb_interface *iface;
+ struct usbin *u = &as->usbin;
+ struct dmabuf *d = &u->dma;
+ struct audioformat *fmt;
+ unsigned int ep;
+ unsigned char data[3];
+ int fmtnr, ret;
+
+ iface = usb_ifnum_to_if(dev, u->interface);
+ if (!iface)
+ return 0;
+
+ fmtnr = find_format(as->fmtin, as->numfmtin, d->format, d->srate);
+ if (fmtnr < 0) {
+ printk(KERN_ERR "usbaudio: set_format_in(): failed to find desired format/speed combination.\n");
+ return -1;
+ }
+
+ fmt = as->fmtin + fmtnr;
+ alts = usb_altnum_to_altsetting(iface, fmt->altsetting);
+ u->format = fmt->format;
+ u->datapipe = usb_rcvisocpipe(dev, alts->endpoint[0].desc.bEndpointAddress & 0xf);
+ u->syncpipe = u->syncinterval = 0;
+ if ((alts->endpoint[0].desc.bmAttributes & 0x0c) == 0x08) {
+ if (alts->desc.bNumEndpoints < 2 ||
+ alts->endpoint[1].desc.bmAttributes != 0x01 ||
+ alts->endpoint[1].desc.bSynchAddress != 0 ||
+ alts->endpoint[1].desc.bEndpointAddress != (alts->endpoint[0].desc.bSynchAddress & 0x7f)) {
+ printk(KERN_WARNING "usbaudio: device %d interface %d altsetting %d claims adaptive in "
+ "but has invalid synch pipe; treating as asynchronous in\n",
+ dev->devnum, u->interface, fmt->altsetting);
+ } else {
+ u->syncpipe = usb_sndisocpipe(dev, alts->endpoint[1].desc.bEndpointAddress & 0xf);
+ u->syncinterval = alts->endpoint[1].desc.bRefresh;
+ }
+ }
+ if (d->srate < fmt->sratelo)
+ d->srate = fmt->sratelo;
+ if (d->srate > fmt->sratehi)
+ d->srate = fmt->sratehi;
+ dprintk((KERN_DEBUG "usbaudio: set_format_in: usb_set_interface %u %u\n",
+ u->interface, fmt->altsetting));
+ if (usb_set_interface(dev, alts->desc.bInterfaceNumber, fmt->altsetting) < 0) {
+ printk(KERN_WARNING "usbaudio: usb_set_interface failed, device %d interface %d altsetting %d\n",
+ dev->devnum, u->interface, fmt->altsetting);
+ return -1;
+ }
+ if (fmt->sratelo == fmt->sratehi)
+ return 0;
+ ep = usb_pipeendpoint(u->datapipe) | (u->datapipe & USB_DIR_IN);
+ /* if endpoint has pitch control, enable it */
+ if (fmt->attributes & 0x02) {
+ data[0] = 1;
+ if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
+ PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
+ printk(KERN_ERR "usbaudio: failure (error %d) to set output pitch control device %d interface %u endpoint 0x%x to %u\n",
+ ret, dev->devnum, u->interface, ep, d->srate);
+ return -1;
+ }
+ }
+ /* if endpoint has sampling rate control, set it */
+ if (fmt->attributes & 0x01) {
+ data[0] = d->srate;
+ data[1] = d->srate >> 8;
+ data[2] = d->srate >> 16;
+ if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
+ SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
+ printk(KERN_ERR "usbaudio: failure (error %d) to set input sampling frequency device %d interface %u endpoint 0x%x to %u\n",
+ ret, dev->devnum, u->interface, ep, d->srate);
+ return -1;
+ }
+ if ((ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
+ SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
+ printk(KERN_ERR "usbaudio: failure (error %d) to get input sampling frequency device %d interface %u endpoint 0x%x\n",
+ ret, dev->devnum, u->interface, ep);
+ return -1;
+ }
+ dprintk((KERN_DEBUG "usbaudio: set_format_in: device %d interface %d altsetting %d srate req: %u real %u\n",
+ dev->devnum, u->interface, fmt->altsetting, d->srate, data[0] | (data[1] << 8) | (data[2] << 16)));
+ d->srate = data[0] | (data[1] << 8) | (data[2] << 16);
+ }
+ dprintk((KERN_DEBUG "usbaudio: set_format_in: USB format 0x%x, DMA format 0x%x srate %u\n", u->format, d->format, d->srate));
+ return 0;
+}
+
+static int set_format_out(struct usb_audiodev *as)
+{
+ struct usb_device *dev = as->state->usbdev;
+ struct usb_host_interface *alts;
+ struct usb_interface *iface;
+ struct usbout *u = &as->usbout;
+ struct dmabuf *d = &u->dma;
+ struct audioformat *fmt;
+ unsigned int ep;
+ unsigned char data[3];
+ int fmtnr, ret;
+
+ iface = usb_ifnum_to_if(dev, u->interface);
+ if (!iface)
+ return 0;
+
+ fmtnr = find_format(as->fmtout, as->numfmtout, d->format, d->srate);
+ if (fmtnr < 0) {
+ printk(KERN_ERR "usbaudio: set_format_out(): failed to find desired format/speed combination.\n");
+ return -1;
+ }
+
+ fmt = as->fmtout + fmtnr;
+ u->format = fmt->format;
+ alts = usb_altnum_to_altsetting(iface, fmt->altsetting);
+ u->datapipe = usb_sndisocpipe(dev, alts->endpoint[0].desc.bEndpointAddress & 0xf);
+ u->syncpipe = u->syncinterval = 0;
+ if ((alts->endpoint[0].desc.bmAttributes & 0x0c) == 0x04) {
+#if 0
+ printk(KERN_DEBUG "bNumEndpoints 0x%02x endpoint[1].bmAttributes 0x%02x\n"
+ KERN_DEBUG "endpoint[1].bSynchAddress 0x%02x endpoint[1].bEndpointAddress 0x%02x\n"
+ KERN_DEBUG "endpoint[0].bSynchAddress 0x%02x\n", alts->bNumEndpoints,
+ alts->endpoint[1].bmAttributes, alts->endpoint[1].bSynchAddress,
+ alts->endpoint[1].bEndpointAddress, alts->endpoint[0].bSynchAddress);
+#endif
+ if (alts->desc.bNumEndpoints < 2 ||
+ alts->endpoint[1].desc.bmAttributes != 0x01 ||
+ alts->endpoint[1].desc.bSynchAddress != 0 ||
+ alts->endpoint[1].desc.bEndpointAddress != (alts->endpoint[0].desc.bSynchAddress | 0x80)) {
+ printk(KERN_WARNING "usbaudio: device %d interface %d altsetting %d claims asynch out "
+ "but has invalid synch pipe; treating as adaptive out\n",
+ dev->devnum, u->interface, fmt->altsetting);
+ } else {
+ u->syncpipe = usb_rcvisocpipe(dev, alts->endpoint[1].desc.bEndpointAddress & 0xf);
+ u->syncinterval = alts->endpoint[1].desc.bRefresh;
+ }
+ }
+ if (d->srate < fmt->sratelo)
+ d->srate = fmt->sratelo;
+ if (d->srate > fmt->sratehi)
+ d->srate = fmt->sratehi;
+ dprintk((KERN_DEBUG "usbaudio: set_format_out: usb_set_interface %u %u\n",
+ u->interface, fmt->altsetting));
+ if (usb_set_interface(dev, u->interface, fmt->altsetting) < 0) {
+ printk(KERN_WARNING "usbaudio: usb_set_interface failed, device %d interface %d altsetting %d\n",
+ dev->devnum, u->interface, fmt->altsetting);
+ return -1;
+ }
+ if (fmt->sratelo == fmt->sratehi)
+ return 0;
+ ep = usb_pipeendpoint(u->datapipe) | (u->datapipe & USB_DIR_IN);
+ /* if endpoint has pitch control, enable it */
+ if (fmt->attributes & 0x02) {
+ data[0] = 1;
+ if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
+ PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
+ printk(KERN_ERR "usbaudio: failure (error %d) to set output pitch control device %d interface %u endpoint 0x%x to %u\n",
+ ret, dev->devnum, u->interface, ep, d->srate);
+ return -1;
+ }
+ }
+ /* if endpoint has sampling rate control, set it */
+ if (fmt->attributes & 0x01) {
+ data[0] = d->srate;
+ data[1] = d->srate >> 8;
+ data[2] = d->srate >> 16;
+ if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
+ SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
+ printk(KERN_ERR "usbaudio: failure (error %d) to set output sampling frequency device %d interface %u endpoint 0x%x to %u\n",
+ ret, dev->devnum, u->interface, ep, d->srate);
+ return -1;
+ }
+ if ((ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
+ SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
+ printk(KERN_ERR "usbaudio: failure (error %d) to get output sampling frequency device %d interface %u endpoint 0x%x\n",
+ ret, dev->devnum, u->interface, ep);
+ return -1;
+ }
+ dprintk((KERN_DEBUG "usbaudio: set_format_out: device %d interface %d altsetting %d srate req: %u real %u\n",
+ dev->devnum, u->interface, fmt->altsetting, d->srate, data[0] | (data[1] << 8) | (data[2] << 16)));
+ d->srate = data[0] | (data[1] << 8) | (data[2] << 16);
+ }
+ dprintk((KERN_DEBUG "usbaudio: set_format_out: USB format 0x%x, DMA format 0x%x srate %u\n", u->format, d->format, d->srate));
+ return 0;
+}
+
+static int set_format(struct usb_audiodev *s, unsigned int fmode, unsigned int fmt, unsigned int srate)
+{
+ int ret1 = 0, ret2 = 0;
+
+ if (!(fmode & (FMODE_READ|FMODE_WRITE)))
+ return -EINVAL;
+ if (fmode & FMODE_READ) {
+ usbin_stop(s);
+ s->usbin.dma.ready = 0;
+ if (fmt == AFMT_QUERY)
+ fmt = s->usbin.dma.format;
+ else
+ s->usbin.dma.format = fmt;
+ if (!srate)
+ srate = s->usbin.dma.srate;
+ else
+ s->usbin.dma.srate = srate;
+ }
+ if (fmode & FMODE_WRITE) {
+ usbout_stop(s);
+ s->usbout.dma.ready = 0;
+ if (fmt == AFMT_QUERY)
+ fmt = s->usbout.dma.format;
+ else
+ s->usbout.dma.format = fmt;
+ if (!srate)
+ srate = s->usbout.dma.srate;
+ else
+ s->usbout.dma.srate = srate;
+ }
+ if (fmode & FMODE_READ)
+ ret1 = set_format_in(s);
+ if (fmode & FMODE_WRITE)
+ ret2 = set_format_out(s);
+ return ret1 ? ret1 : ret2;
+}
+
+/* --------------------------------------------------------------------- */
+
+static int wrmixer(struct usb_mixerdev *ms, unsigned mixch, unsigned value)
+{
+ struct usb_device *dev = ms->state->usbdev;
+ unsigned char data[2];
+ struct mixerchannel *ch;
+ int v1, v2, v3;
+
+ if (mixch >= ms->numch)
+ return -1;
+ ch = &ms->ch[mixch];
+ v3 = ch->maxval - ch->minval;
+ v1 = value & 0xff;
+ v2 = (value >> 8) & 0xff;
+ if (v1 > 100)
+ v1 = 100;
+ if (v2 > 100)
+ v2 = 100;
+ if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
+ v2 = v1;
+ ch->value = v1 | (v2 << 8);
+ v1 = (v1 * v3) / 100 + ch->minval;
+ v2 = (v2 * v3) / 100 + ch->minval;
+ switch (ch->selector) {
+ case 0: /* mixer unit request */
+ data[0] = v1;
+ data[1] = v1 >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ (ch->chnum << 8) | 1, ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
+ goto err;
+ if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
+ return 0;
+ data[0] = v2;
+ data[1] = v2 >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ ((ch->chnum + !!(ch->flags & MIXFLG_STEREOIN)) << 8) | (1 + !!(ch->flags & MIXFLG_STEREOOUT)),
+ ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
+ goto err;
+ return 0;
+
+ /* various feature unit controls */
+ case VOLUME_CONTROL:
+ data[0] = v1;
+ data[1] = v1 >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ (ch->selector << 8) | ch->chnum, ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
+ goto err;
+ if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
+ return 0;
+ data[0] = v2;
+ data[1] = v2 >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ (ch->selector << 8) | (ch->chnum + 1), ms->iface | (ch->unitid << 8), data, 2, 1000) < 0)
+ goto err;
+ return 0;
+
+ case BASS_CONTROL:
+ case MID_CONTROL:
+ case TREBLE_CONTROL:
+ data[0] = v1 >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ (ch->selector << 8) | ch->chnum, ms->iface | (ch->unitid << 8), data, 1, 1000) < 0)
+ goto err;
+ if (!(ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
+ return 0;
+ data[0] = v2 >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ (ch->selector << 8) | (ch->chnum + 1), ms->iface | (ch->unitid << 8), data, 1, 1000) < 0)
+ goto err;
+ return 0;
+
+ default:
+ return -1;
+ }
+ return 0;
+
+ err:
+ printk(KERN_ERR "usbaudio: mixer request device %u if %u unit %u ch %u selector %u failed\n",
+ dev->devnum, ms->iface, ch->unitid, ch->chnum, ch->selector);
+ return -1;
+}
+
+static int get_rec_src(struct usb_mixerdev *ms)
+{
+ struct usb_device *dev = ms->state->usbdev;
+ unsigned int mask = 0, retmask = 0;
+ unsigned int i, j;
+ unsigned char buf;
+ int err = 0;
+
+ for (i = 0; i < ms->numch; i++) {
+ if (!ms->ch[i].slctunitid || (mask & (1 << i)))
+ continue;
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ 0, ms->iface | (ms->ch[i].slctunitid << 8), &buf, 1, 1000) < 0) {
+ err = -EIO;
+ printk(KERN_ERR "usbaudio: selector read request device %u if %u unit %u failed\n",
+ dev->devnum, ms->iface, ms->ch[i].slctunitid & 0xff);
+ continue;
+ }
+ for (j = i; j < ms->numch; j++) {
+ if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
+ continue;
+ mask |= 1 << j;
+ if (buf == (ms->ch[j].slctunitid >> 8))
+ retmask |= 1 << ms->ch[j].osschannel;
+ }
+ }
+ if (err)
+ return -EIO;
+ return retmask;
+}
+
+static int set_rec_src(struct usb_mixerdev *ms, int srcmask)
+{
+ struct usb_device *dev = ms->state->usbdev;
+ unsigned int mask = 0, smask, bmask;
+ unsigned int i, j;
+ unsigned char buf;
+ int err = 0;
+
+ for (i = 0; i < ms->numch; i++) {
+ if (!ms->ch[i].slctunitid || (mask & (1 << i)))
+ continue;
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ 0, ms->iface | (ms->ch[i].slctunitid << 8), &buf, 1, 1000) < 0) {
+ err = -EIO;
+ printk(KERN_ERR "usbaudio: selector read request device %u if %u unit %u failed\n",
+ dev->devnum, ms->iface, ms->ch[i].slctunitid & 0xff);
+ continue;
+ }
+ /* first generate smask */
+ smask = bmask = 0;
+ for (j = i; j < ms->numch; j++) {
+ if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
+ continue;
+ smask |= 1 << ms->ch[j].osschannel;
+ if (buf == (ms->ch[j].slctunitid >> 8))
+ bmask |= 1 << ms->ch[j].osschannel;
+ mask |= 1 << j;
+ }
+ /* check for multiple set sources */
+ j = hweight32(srcmask & smask);
+ if (j == 0)
+ continue;
+ if (j > 1)
+ srcmask &= ~bmask;
+ for (j = i; j < ms->numch; j++) {
+ if ((ms->ch[i].slctunitid ^ ms->ch[j].slctunitid) & 0xff)
+ continue;
+ if (!(srcmask & (1 << ms->ch[j].osschannel)))
+ continue;
+ buf = ms->ch[j].slctunitid >> 8;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ 0, ms->iface | (ms->ch[j].slctunitid << 8), &buf, 1, 1000) < 0) {
+ err = -EIO;
+ printk(KERN_ERR "usbaudio: selector write request device %u if %u unit %u failed\n",
+ dev->devnum, ms->iface, ms->ch[j].slctunitid & 0xff);
+ continue;
+ }
+ }
+ }
+ return err ? -EIO : 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * should be called with open_sem hold, so that no new processes
+ * look at the audio device to be destroyed
+ */
+
+static void release(struct usb_audio_state *s)
+{
+ struct usb_audiodev *as;
+ struct usb_mixerdev *ms;
+
+ s->count--;
+ if (s->count) {
+ up(&open_sem);
+ return;
+ }
+ up(&open_sem);
+ wake_up(&open_wait);
+ while (!list_empty(&s->audiolist)) {
+ as = list_entry(s->audiolist.next, struct usb_audiodev, list);
+ list_del(&as->list);
+ usbin_release(as);
+ usbout_release(as);
+ dmabuf_release(&as->usbin.dma);
+ dmabuf_release(&as->usbout.dma);
+ usb_free_urb(as->usbin.durb[0].urb);
+ usb_free_urb(as->usbin.durb[1].urb);
+ usb_free_urb(as->usbin.surb[0].urb);
+ usb_free_urb(as->usbin.surb[1].urb);
+ usb_free_urb(as->usbout.durb[0].urb);
+ usb_free_urb(as->usbout.durb[1].urb);
+ usb_free_urb(as->usbout.surb[0].urb);
+ usb_free_urb(as->usbout.surb[1].urb);
+ kfree(as);
+ }
+ while (!list_empty(&s->mixerlist)) {
+ ms = list_entry(s->mixerlist.next, struct usb_mixerdev, list);
+ list_del(&ms->list);
+ kfree(ms);
+ }
+ kfree(s);
+}
+
+static inline int prog_dmabuf_in(struct usb_audiodev *as)
+{
+ usbin_stop(as);
+ return dmabuf_init(&as->usbin.dma);
+}
+
+static inline int prog_dmabuf_out(struct usb_audiodev *as)
+{
+ usbout_stop(as);
+ return dmabuf_init(&as->usbout.dma);
+}
+
+/* --------------------------------------------------------------------- */
+
+static int usb_audio_open_mixdev(struct inode *inode, struct file *file)
+{
+ unsigned int minor = iminor(inode);
+ struct usb_mixerdev *ms;
+ struct usb_audio_state *s;
+
+ down(&open_sem);
+ list_for_each_entry(s, &audiodevs, audiodev) {
+ list_for_each_entry(ms, &s->mixerlist, list) {
+ if (ms->dev_mixer == minor)
+ goto mixer_found;
+ }
+ }
+ up(&open_sem);
+ return -ENODEV;
+
+ mixer_found:
+ if (!s->usbdev) {
+ up(&open_sem);
+ return -EIO;
+ }
+ file->private_data = ms;
+ s->count++;
+
+ up(&open_sem);
+ return nonseekable_open(inode, file);
+}
+
+static int usb_audio_release_mixdev(struct inode *inode, struct file *file)
+{
+ struct usb_mixerdev *ms = (struct usb_mixerdev *)file->private_data;
+ struct usb_audio_state *s;
+
+ lock_kernel();
+ s = ms->state;
+ down(&open_sem);
+ release(s);
+ unlock_kernel();
+ return 0;
+}
+
+static int usb_audio_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct usb_mixerdev *ms = (struct usb_mixerdev *)file->private_data;
+ int i, j, val;
+ int __user *user_arg = (int __user *)arg;
+
+ if (!ms->state->usbdev)
+ return -ENODEV;
+
+ if (cmd == SOUND_MIXER_INFO) {
+ mixer_info info;
+
+ memset(&info, 0, sizeof(info));
+ strncpy(info.id, "USB_AUDIO", sizeof(info.id));
+ strncpy(info.name, "USB Audio Class Driver", sizeof(info.name));
+ info.modify_counter = ms->modcnt;
+ if (copy_to_user((void __user *)arg, &info, sizeof(info)))
+ return -EFAULT;
+ return 0;
+ }
+ if (cmd == SOUND_OLD_MIXER_INFO) {
+ _old_mixer_info info;
+
+ memset(&info, 0, sizeof(info));
+ strncpy(info.id, "USB_AUDIO", sizeof(info.id));
+ strncpy(info.name, "USB Audio Class Driver", sizeof(info.name));
+ if (copy_to_user((void __user *)arg, &info, sizeof(info)))
+ return -EFAULT;
+ return 0;
+ }
+ if (cmd == OSS_GETVERSION)
+ return put_user(SOUND_VERSION, user_arg);
+ if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int))
+ return -EINVAL;
+ if (_IOC_DIR(cmd) == _IOC_READ) {
+ switch (_IOC_NR(cmd)) {
+ case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+ val = get_rec_src(ms);
+ if (val < 0)
+ return val;
+ return put_user(val, user_arg);
+
+ case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */
+ for (val = i = 0; i < ms->numch; i++)
+ val |= 1 << ms->ch[i].osschannel;
+ return put_user(val, user_arg);
+
+ case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
+ for (val = i = 0; i < ms->numch; i++)
+ if (ms->ch[i].slctunitid)
+ val |= 1 << ms->ch[i].osschannel;
+ return put_user(val, user_arg);
+
+ case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
+ for (val = i = 0; i < ms->numch; i++)
+ if (ms->ch[i].flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT))
+ val |= 1 << ms->ch[i].osschannel;
+ return put_user(val, user_arg);
+
+ case SOUND_MIXER_CAPS:
+ return put_user(SOUND_CAP_EXCL_INPUT, user_arg);
+
+ default:
+ i = _IOC_NR(cmd);
+ if (i >= SOUND_MIXER_NRDEVICES)
+ return -EINVAL;
+ for (j = 0; j < ms->numch; j++) {
+ if (ms->ch[j].osschannel == i) {
+ return put_user(ms->ch[j].value, user_arg);
+ }
+ }
+ return -EINVAL;
+ }
+ }
+ if (_IOC_DIR(cmd) != (_IOC_READ|_IOC_WRITE))
+ return -EINVAL;
+ ms->modcnt++;
+ switch (_IOC_NR(cmd)) {
+ case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ return set_rec_src(ms, val);
+
+ default:
+ i = _IOC_NR(cmd);
+ if (i >= SOUND_MIXER_NRDEVICES)
+ return -EINVAL;
+ for (j = 0; j < ms->numch && ms->ch[j].osschannel != i; j++);
+ if (j >= ms->numch)
+ return -EINVAL;
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (wrmixer(ms, j, val))
+ return -EIO;
+ return put_user(ms->ch[j].value, user_arg);
+ }
+}
+
+static /*const*/ struct file_operations usb_mixer_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .ioctl = usb_audio_ioctl_mixdev,
+ .open = usb_audio_open_mixdev,
+ .release = usb_audio_release_mixdev,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int drain_out(struct usb_audiodev *as, int nonblock)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned long flags;
+ int count, tmo;
+
+ if (as->usbout.dma.mapped || !as->usbout.dma.ready)
+ return 0;
+ usbout_start(as);
+ add_wait_queue(&as->usbout.dma.wait, &wait);
+ for (;;) {
+ __set_current_state(TASK_INTERRUPTIBLE);
+ spin_lock_irqsave(&as->lock, flags);
+ count = as->usbout.dma.count;
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (count <= 0)
+ break;
+ if (signal_pending(current))
+ break;
+ if (nonblock) {
+ remove_wait_queue(&as->usbout.dma.wait, &wait);
+ set_current_state(TASK_RUNNING);
+ return -EBUSY;
+ }
+ tmo = 3 * HZ * count / as->usbout.dma.srate;
+ tmo >>= AFMT_BYTESSHIFT(as->usbout.dma.format);
+ if (!schedule_timeout(tmo + 1)) {
+ printk(KERN_DEBUG "usbaudio: dma timed out??\n");
+ break;
+ }
+ }
+ remove_wait_queue(&as->usbout.dma.wait, &wait);
+ set_current_state(TASK_RUNNING);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static ssize_t usb_audio_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
+ DECLARE_WAITQUEUE(wait, current);
+ ssize_t ret = 0;
+ unsigned long flags;
+ unsigned int ptr;
+ int cnt, err;
+
+ if (as->usbin.dma.mapped)
+ return -ENXIO;
+ if (!as->usbin.dma.ready && (ret = prog_dmabuf_in(as)))
+ return ret;
+ if (!access_ok(VERIFY_WRITE, buffer, count))
+ return -EFAULT;
+ add_wait_queue(&as->usbin.dma.wait, &wait);
+ while (count > 0) {
+ spin_lock_irqsave(&as->lock, flags);
+ ptr = as->usbin.dma.rdptr;
+ cnt = as->usbin.dma.count;
+ /* set task state early to avoid wakeup races */
+ if (cnt <= 0)
+ __set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (cnt > count)
+ cnt = count;
+ if (cnt <= 0) {
+ if (usbin_start(as)) {
+ if (!ret)
+ ret = -ENODEV;
+ break;
+ }
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ break;
+ }
+ schedule();
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ break;
+ }
+ continue;
+ }
+ if ((err = dmabuf_copyout_user(&as->usbin.dma, ptr, buffer, cnt))) {
+ if (!ret)
+ ret = err;
+ break;
+ }
+ ptr += cnt;
+ if (ptr >= as->usbin.dma.dmasize)
+ ptr -= as->usbin.dma.dmasize;
+ spin_lock_irqsave(&as->lock, flags);
+ as->usbin.dma.rdptr = ptr;
+ as->usbin.dma.count -= cnt;
+ spin_unlock_irqrestore(&as->lock, flags);
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ }
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(&as->usbin.dma.wait, &wait);
+ return ret;
+}
+
+static ssize_t usb_audio_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
+ DECLARE_WAITQUEUE(wait, current);
+ ssize_t ret = 0;
+ unsigned long flags;
+ unsigned int ptr;
+ unsigned int start_thr;
+ int cnt, err;
+
+ if (as->usbout.dma.mapped)
+ return -ENXIO;
+ if (!as->usbout.dma.ready && (ret = prog_dmabuf_out(as)))
+ return ret;
+ if (!access_ok(VERIFY_READ, buffer, count))
+ return -EFAULT;
+ start_thr = (as->usbout.dma.srate << AFMT_BYTESSHIFT(as->usbout.dma.format)) / (1000 / (3 * DESCFRAMES));
+ add_wait_queue(&as->usbout.dma.wait, &wait);
+ while (count > 0) {
+#if 0
+ printk(KERN_DEBUG "usb_audio_write: count %u dma: count %u rdptr %u wrptr %u dmasize %u fragsize %u flags 0x%02x taskst 0x%lx\n",
+ count, as->usbout.dma.count, as->usbout.dma.rdptr, as->usbout.dma.wrptr, as->usbout.dma.dmasize, as->usbout.dma.fragsize,
+ as->usbout.flags, current->state);
+#endif
+ spin_lock_irqsave(&as->lock, flags);
+ if (as->usbout.dma.count < 0) {
+ as->usbout.dma.count = 0;
+ as->usbout.dma.rdptr = as->usbout.dma.wrptr;
+ }
+ ptr = as->usbout.dma.wrptr;
+ cnt = as->usbout.dma.dmasize - as->usbout.dma.count;
+ /* set task state early to avoid wakeup races */
+ if (cnt <= 0)
+ __set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (cnt > count)
+ cnt = count;
+ if (cnt <= 0) {
+ if (usbout_start(as)) {
+ if (!ret)
+ ret = -ENODEV;
+ break;
+ }
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ break;
+ }
+ schedule();
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ break;
+ }
+ continue;
+ }
+ if ((err = dmabuf_copyin_user(&as->usbout.dma, ptr, buffer, cnt))) {
+ if (!ret)
+ ret = err;
+ break;
+ }
+ ptr += cnt;
+ if (ptr >= as->usbout.dma.dmasize)
+ ptr -= as->usbout.dma.dmasize;
+ spin_lock_irqsave(&as->lock, flags);
+ as->usbout.dma.wrptr = ptr;
+ as->usbout.dma.count += cnt;
+ spin_unlock_irqrestore(&as->lock, flags);
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ if (as->usbout.dma.count >= start_thr && usbout_start(as)) {
+ if (!ret)
+ ret = -ENODEV;
+ break;
+ }
+ }
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(&as->usbout.dma.wait, &wait);
+ return ret;
+}
+
+/* Called without the kernel lock - fine */
+static unsigned int usb_audio_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
+ unsigned long flags;
+ unsigned int mask = 0;
+
+ if (file->f_mode & FMODE_WRITE) {
+ if (!as->usbout.dma.ready)
+ prog_dmabuf_out(as);
+ poll_wait(file, &as->usbout.dma.wait, wait);
+ }
+ if (file->f_mode & FMODE_READ) {
+ if (!as->usbin.dma.ready)
+ prog_dmabuf_in(as);
+ poll_wait(file, &as->usbin.dma.wait, wait);
+ }
+ spin_lock_irqsave(&as->lock, flags);
+ if (file->f_mode & FMODE_READ) {
+ if (as->usbin.dma.count >= (signed)as->usbin.dma.fragsize)
+ mask |= POLLIN | POLLRDNORM;
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ if (as->usbout.dma.mapped) {
+ if (as->usbout.dma.count >= (signed)as->usbout.dma.fragsize)
+ mask |= POLLOUT | POLLWRNORM;
+ } else {
+ if ((signed)as->usbout.dma.dmasize >= as->usbout.dma.count + (signed)as->usbout.dma.fragsize)
+ mask |= POLLOUT | POLLWRNORM;
+ }
+ }
+ spin_unlock_irqrestore(&as->lock, flags);
+ return mask;
+}
+
+static int usb_audio_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
+ struct dmabuf *db;
+ int ret = -EINVAL;
+
+ lock_kernel();
+ if (vma->vm_flags & VM_WRITE) {
+ if ((ret = prog_dmabuf_out(as)) != 0)
+ goto out;
+ db = &as->usbout.dma;
+ } else if (vma->vm_flags & VM_READ) {
+ if ((ret = prog_dmabuf_in(as)) != 0)
+ goto out;
+ db = &as->usbin.dma;
+ } else
+ goto out;
+
+ ret = -EINVAL;
+ if (vma->vm_pgoff != 0)
+ goto out;
+
+ ret = dmabuf_mmap(vma, db, vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_page_prot);
+out:
+ unlock_kernel();
+ return ret;
+}
+
+static int usb_audio_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
+ struct usb_audio_state *s = as->state;
+ int __user *user_arg = (int __user *)arg;
+ unsigned long flags;
+ audio_buf_info abinfo;
+ count_info cinfo;
+ int val = 0;
+ int val2, mapped, ret;
+
+ if (!s->usbdev)
+ return -EIO;
+ mapped = ((file->f_mode & FMODE_WRITE) && as->usbout.dma.mapped) ||
+ ((file->f_mode & FMODE_READ) && as->usbin.dma.mapped);
+#if 0
+ if (arg)
+ get_user(val, (int *)arg);
+ printk(KERN_DEBUG "usbaudio: usb_audio_ioctl cmd=%x arg=%lx *arg=%d\n", cmd, arg, val)
+#endif
+ switch (cmd) {
+ case OSS_GETVERSION:
+ return put_user(SOUND_VERSION, user_arg);
+
+ case SNDCTL_DSP_SYNC:
+ if (file->f_mode & FMODE_WRITE)
+ return drain_out(as, 0/*file->f_flags & O_NONBLOCK*/);
+ return 0;
+
+ case SNDCTL_DSP_SETDUPLEX:
+ return 0;
+
+ case SNDCTL_DSP_GETCAPS:
+ return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
+ DSP_CAP_MMAP | DSP_CAP_BATCH, user_arg);
+
+ case SNDCTL_DSP_RESET:
+ if (file->f_mode & FMODE_WRITE) {
+ usbout_stop(as);
+ as->usbout.dma.rdptr = as->usbout.dma.wrptr = as->usbout.dma.count = as->usbout.dma.total_bytes = 0;
+ }
+ if (file->f_mode & FMODE_READ) {
+ usbin_stop(as);
+ as->usbin.dma.rdptr = as->usbin.dma.wrptr = as->usbin.dma.count = as->usbin.dma.total_bytes = 0;
+ }
+ return 0;
+
+ case SNDCTL_DSP_SPEED:
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (val >= 0) {
+ if (val < 4000)
+ val = 4000;
+ if (val > 100000)
+ val = 100000;
+ if (set_format(as, file->f_mode, AFMT_QUERY, val))
+ return -EIO;
+ }
+ return put_user((file->f_mode & FMODE_READ) ?
+ as->usbin.dma.srate : as->usbout.dma.srate,
+ user_arg);
+
+ case SNDCTL_DSP_STEREO:
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ if (val)
+ val2 |= AFMT_STEREO;
+ else
+ val2 &= ~AFMT_STEREO;
+ if (set_format(as, file->f_mode, val2, 0))
+ return -EIO;
+ return 0;
+
+ case SNDCTL_DSP_CHANNELS:
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (val != 0) {
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ if (val == 1)
+ val2 &= ~AFMT_STEREO;
+ else
+ val2 |= AFMT_STEREO;
+ if (set_format(as, file->f_mode, val2, 0))
+ return -EIO;
+ }
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ return put_user(AFMT_ISSTEREO(val2) ? 2 : 1, user_arg);
+
+ case SNDCTL_DSP_GETFMTS: /* Returns a mask */
+ return put_user(AFMT_U8 | AFMT_U16_LE | AFMT_U16_BE |
+ AFMT_S8 | AFMT_S16_LE | AFMT_S16_BE, user_arg);
+
+ case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (val != AFMT_QUERY) {
+ if (hweight32(val) != 1)
+ return -EINVAL;
+ if (!(val & (AFMT_U8 | AFMT_U16_LE | AFMT_U16_BE |
+ AFMT_S8 | AFMT_S16_LE | AFMT_S16_BE)))
+ return -EINVAL;
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ val |= val2 & AFMT_STEREO;
+ if (set_format(as, file->f_mode, val, 0))
+ return -EIO;
+ }
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ return put_user(val2 & ~AFMT_STEREO, user_arg);
+
+ case SNDCTL_DSP_POST:
+ return 0;
+
+ case SNDCTL_DSP_GETTRIGGER:
+ val = 0;
+ if (file->f_mode & FMODE_READ && as->usbin.flags & FLG_RUNNING)
+ val |= PCM_ENABLE_INPUT;
+ if (file->f_mode & FMODE_WRITE && as->usbout.flags & FLG_RUNNING)
+ val |= PCM_ENABLE_OUTPUT;
+ return put_user(val, user_arg);
+
+ case SNDCTL_DSP_SETTRIGGER:
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (file->f_mode & FMODE_READ) {
+ if (val & PCM_ENABLE_INPUT) {
+ if (!as->usbin.dma.ready && (ret = prog_dmabuf_in(as)))
+ return ret;
+ if (usbin_start(as))
+ return -ENODEV;
+ } else
+ usbin_stop(as);
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ if (val & PCM_ENABLE_OUTPUT) {
+ if (!as->usbout.dma.ready && (ret = prog_dmabuf_out(as)))
+ return ret;
+ if (usbout_start(as))
+ return -ENODEV;
+ } else
+ usbout_stop(as);
+ }
+ return 0;
+
+ case SNDCTL_DSP_GETOSPACE:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ if (!(as->usbout.flags & FLG_RUNNING) && (val = prog_dmabuf_out(as)) != 0)
+ return val;
+ spin_lock_irqsave(&as->lock, flags);
+ abinfo.fragsize = as->usbout.dma.fragsize;
+ abinfo.bytes = as->usbout.dma.dmasize - as->usbout.dma.count;
+ abinfo.fragstotal = as->usbout.dma.numfrag;
+ abinfo.fragments = abinfo.bytes >> as->usbout.dma.fragshift;
+ spin_unlock_irqrestore(&as->lock, flags);
+ return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+ case SNDCTL_DSP_GETISPACE:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+ if (!(as->usbin.flags & FLG_RUNNING) && (val = prog_dmabuf_in(as)) != 0)
+ return val;
+ spin_lock_irqsave(&as->lock, flags);
+ abinfo.fragsize = as->usbin.dma.fragsize;
+ abinfo.bytes = as->usbin.dma.count;
+ abinfo.fragstotal = as->usbin.dma.numfrag;
+ abinfo.fragments = abinfo.bytes >> as->usbin.dma.fragshift;
+ spin_unlock_irqrestore(&as->lock, flags);
+ return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+ case SNDCTL_DSP_NONBLOCK:
+ file->f_flags |= O_NONBLOCK;
+ return 0;
+
+ case SNDCTL_DSP_GETODELAY:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ spin_lock_irqsave(&as->lock, flags);
+ val = as->usbout.dma.count;
+ spin_unlock_irqrestore(&as->lock, flags);
+ return put_user(val, user_arg);
+
+ case SNDCTL_DSP_GETIPTR:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+ spin_lock_irqsave(&as->lock, flags);
+ cinfo.bytes = as->usbin.dma.total_bytes;
+ cinfo.blocks = as->usbin.dma.count >> as->usbin.dma.fragshift;
+ cinfo.ptr = as->usbin.dma.wrptr;
+ if (as->usbin.dma.mapped)
+ as->usbin.dma.count &= as->usbin.dma.fragsize-1;
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
+ return -EFAULT;
+ return 0;
+
+ case SNDCTL_DSP_GETOPTR:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ spin_lock_irqsave(&as->lock, flags);
+ cinfo.bytes = as->usbout.dma.total_bytes;
+ cinfo.blocks = as->usbout.dma.count >> as->usbout.dma.fragshift;
+ cinfo.ptr = as->usbout.dma.rdptr;
+ if (as->usbout.dma.mapped)
+ as->usbout.dma.count &= as->usbout.dma.fragsize-1;
+ spin_unlock_irqrestore(&as->lock, flags);
+ if (copy_to_user((void __user *)arg, &cinfo, sizeof(cinfo)))
+ return -EFAULT;
+ return 0;
+
+ case SNDCTL_DSP_GETBLKSIZE:
+ if (file->f_mode & FMODE_WRITE) {
+ if ((val = prog_dmabuf_out(as)))
+ return val;
+ return put_user(as->usbout.dma.fragsize, user_arg);
+ }
+ if ((val = prog_dmabuf_in(as)))
+ return val;
+ return put_user(as->usbin.dma.fragsize, user_arg);
+
+ case SNDCTL_DSP_SETFRAGMENT:
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (file->f_mode & FMODE_READ) {
+ as->usbin.dma.ossfragshift = val & 0xffff;
+ as->usbin.dma.ossmaxfrags = (val >> 16) & 0xffff;
+ if (as->usbin.dma.ossfragshift < 4)
+ as->usbin.dma.ossfragshift = 4;
+ if (as->usbin.dma.ossfragshift > 15)
+ as->usbin.dma.ossfragshift = 15;
+ if (as->usbin.dma.ossmaxfrags < 4)
+ as->usbin.dma.ossmaxfrags = 4;
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ as->usbout.dma.ossfragshift = val & 0xffff;
+ as->usbout.dma.ossmaxfrags = (val >> 16) & 0xffff;
+ if (as->usbout.dma.ossfragshift < 4)
+ as->usbout.dma.ossfragshift = 4;
+ if (as->usbout.dma.ossfragshift > 15)
+ as->usbout.dma.ossfragshift = 15;
+ if (as->usbout.dma.ossmaxfrags < 4)
+ as->usbout.dma.ossmaxfrags = 4;
+ }
+ return 0;
+
+ case SNDCTL_DSP_SUBDIVIDE:
+ if ((file->f_mode & FMODE_READ && as->usbin.dma.subdivision) ||
+ (file->f_mode & FMODE_WRITE && as->usbout.dma.subdivision))
+ return -EINVAL;
+ if (get_user(val, user_arg))
+ return -EFAULT;
+ if (val != 1 && val != 2 && val != 4)
+ return -EINVAL;
+ if (file->f_mode & FMODE_READ)
+ as->usbin.dma.subdivision = val;
+ if (file->f_mode & FMODE_WRITE)
+ as->usbout.dma.subdivision = val;
+ return 0;
+
+ case SOUND_PCM_READ_RATE:
+ return put_user((file->f_mode & FMODE_READ) ?
+ as->usbin.dma.srate : as->usbout.dma.srate,
+ user_arg);
+
+ case SOUND_PCM_READ_CHANNELS:
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ return put_user(AFMT_ISSTEREO(val2) ? 2 : 1, user_arg);
+
+ case SOUND_PCM_READ_BITS:
+ val2 = (file->f_mode & FMODE_READ) ? as->usbin.dma.format : as->usbout.dma.format;
+ return put_user(AFMT_IS16BIT(val2) ? 16 : 8, user_arg);
+
+ case SOUND_PCM_WRITE_FILTER:
+ case SNDCTL_DSP_SETSYNCRO:
+ case SOUND_PCM_READ_FILTER:
+ return -EINVAL;
+ }
+ dprintk((KERN_DEBUG "usbaudio: usb_audio_ioctl - no command found\n"));
+ return -ENOIOCTLCMD;
+}
+
+static int usb_audio_open(struct inode *inode, struct file *file)
+{
+ unsigned int minor = iminor(inode);
+ DECLARE_WAITQUEUE(wait, current);
+ struct usb_audiodev *as;
+ struct usb_audio_state *s;
+
+ for (;;) {
+ down(&open_sem);
+ list_for_each_entry(s, &audiodevs, audiodev) {
+ list_for_each_entry(as, &s->audiolist, list) {
+ if (!((as->dev_audio ^ minor) & ~0xf))
+ goto device_found;
+ }
+ }
+ up(&open_sem);
+ return -ENODEV;
+
+ device_found:
+ if (!s->usbdev) {
+ up(&open_sem);
+ return -EIO;
+ }
+ /* wait for device to become free */
+ if (!(as->open_mode & file->f_mode))
+ break;
+ if (file->f_flags & O_NONBLOCK) {
+ up(&open_sem);
+ return -EBUSY;
+ }
+ __set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&open_wait, &wait);
+ up(&open_sem);
+ schedule();
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(&open_wait, &wait);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ }
+ if (file->f_mode & FMODE_READ)
+ as->usbin.dma.ossfragshift = as->usbin.dma.ossmaxfrags = as->usbin.dma.subdivision = 0;
+ if (file->f_mode & FMODE_WRITE)
+ as->usbout.dma.ossfragshift = as->usbout.dma.ossmaxfrags = as->usbout.dma.subdivision = 0;
+ if (set_format(as, file->f_mode, ((minor & 0xf) == SND_DEV_DSP16) ? AFMT_S16_LE : AFMT_U8 /* AFMT_ULAW */, 8000)) {
+ up(&open_sem);
+ return -EIO;
+ }
+ file->private_data = as;
+ as->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
+ s->count++;
+ up(&open_sem);
+ return nonseekable_open(inode, file);
+}
+
+static int usb_audio_release(struct inode *inode, struct file *file)
+{
+ struct usb_audiodev *as = (struct usb_audiodev *)file->private_data;
+ struct usb_audio_state *s;
+ struct usb_device *dev;
+
+ lock_kernel();
+ s = as->state;
+ dev = s->usbdev;
+ if (file->f_mode & FMODE_WRITE)
+ drain_out(as, file->f_flags & O_NONBLOCK);
+ down(&open_sem);
+ if (file->f_mode & FMODE_WRITE) {
+ usbout_stop(as);
+ if (dev && as->usbout.interface >= 0)
+ usb_set_interface(dev, as->usbout.interface, 0);
+ dmabuf_release(&as->usbout.dma);
+ usbout_release(as);
+ }
+ if (file->f_mode & FMODE_READ) {
+ usbin_stop(as);
+ if (dev && as->usbin.interface >= 0)
+ usb_set_interface(dev, as->usbin.interface, 0);
+ dmabuf_release(&as->usbin.dma);
+ usbin_release(as);
+ }
+ as->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
+ release(s);
+ wake_up(&open_wait);
+ unlock_kernel();
+ return 0;
+}
+
+static /*const*/ struct file_operations usb_audio_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = usb_audio_read,
+ .write = usb_audio_write,
+ .poll = usb_audio_poll,
+ .ioctl = usb_audio_ioctl,
+ .mmap = usb_audio_mmap,
+ .open = usb_audio_open,
+ .release = usb_audio_release,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int usb_audio_probe(struct usb_interface *iface,
+ const struct usb_device_id *id);
+static void usb_audio_disconnect(struct usb_interface *iface);
+
+static struct usb_device_id usb_audio_ids [] = {
+ { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
+ .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = 1},
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usb_audio_ids);
+
+static struct usb_driver usb_audio_driver = {
+ .owner = THIS_MODULE,
+ .name = "audio",
+ .probe = usb_audio_probe,
+ .disconnect = usb_audio_disconnect,
+ .id_table = usb_audio_ids,
+};
+
+static void *find_descriptor(void *descstart, unsigned int desclen, void *after,
+ u8 dtype, int iface, int altsetting)
+{
+ u8 *p, *end, *next;
+ int ifc = -1, as = -1;
+
+ p = descstart;
+ end = p + desclen;
+ for (; p < end;) {
+ if (p[0] < 2)
+ return NULL;
+ next = p + p[0];
+ if (next > end)
+ return NULL;
+ if (p[1] == USB_DT_INTERFACE) {
+ /* minimum length of interface descriptor */
+ if (p[0] < 9)
+ return NULL;
+ ifc = p[2];
+ as = p[3];
+ }
+ if (p[1] == dtype && (!after || (void *)p > after) &&
+ (iface == -1 || iface == ifc) && (altsetting == -1 || altsetting == as)) {
+ return p;
+ }
+ p = next;
+ }
+ return NULL;
+}
+
+static void *find_csinterface_descriptor(void *descstart, unsigned int desclen, void *after, u8 dsubtype, int iface, int altsetting)
+{
+ unsigned char *p;
+
+ p = find_descriptor(descstart, desclen, after, USB_DT_CS_INTERFACE, iface, altsetting);
+ while (p) {
+ if (p[0] >= 3 && p[2] == dsubtype)
+ return p;
+ p = find_descriptor(descstart, desclen, p, USB_DT_CS_INTERFACE, iface, altsetting);
+ }
+ return NULL;
+}
+
+static void *find_audiocontrol_unit(void *descstart, unsigned int desclen, void *after, u8 unit, int iface)
+{
+ unsigned char *p;
+
+ p = find_descriptor(descstart, desclen, after, USB_DT_CS_INTERFACE, iface, -1);
+ while (p) {
+ if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
+ return p;
+ p = find_descriptor(descstart, desclen, p, USB_DT_CS_INTERFACE, iface, -1);
+ }
+ return NULL;
+}
+
+static void usb_audio_parsestreaming(struct usb_audio_state *s, unsigned char *buffer, unsigned int buflen, int asifin, int asifout)
+{
+ struct usb_device *dev = s->usbdev;
+ struct usb_audiodev *as;
+ struct usb_host_interface *alts;
+ struct usb_interface *iface;
+ struct audioformat *fp;
+ unsigned char *fmt, *csep;
+ unsigned int i, j, k, format, idx;
+
+ if (!(as = kmalloc(sizeof(struct usb_audiodev), GFP_KERNEL)))
+ return;
+ memset(as, 0, sizeof(struct usb_audiodev));
+ init_waitqueue_head(&as->usbin.dma.wait);
+ init_waitqueue_head(&as->usbout.dma.wait);
+ spin_lock_init(&as->lock);
+ as->usbin.durb[0].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
+ as->usbin.durb[1].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
+ as->usbin.surb[0].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
+ as->usbin.surb[1].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
+ as->usbout.durb[0].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
+ as->usbout.durb[1].urb = usb_alloc_urb (DESCFRAMES, GFP_KERNEL);
+ as->usbout.surb[0].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
+ as->usbout.surb[1].urb = usb_alloc_urb (SYNCFRAMES, GFP_KERNEL);
+ if ((!as->usbin.durb[0].urb) ||
+ (!as->usbin.durb[1].urb) ||
+ (!as->usbin.surb[0].urb) ||
+ (!as->usbin.surb[1].urb) ||
+ (!as->usbout.durb[0].urb) ||
+ (!as->usbout.durb[1].urb) ||
+ (!as->usbout.surb[0].urb) ||
+ (!as->usbout.surb[1].urb)) {
+ usb_free_urb(as->usbin.durb[0].urb);
+ usb_free_urb(as->usbin.durb[1].urb);
+ usb_free_urb(as->usbin.surb[0].urb);
+ usb_free_urb(as->usbin.surb[1].urb);
+ usb_free_urb(as->usbout.durb[0].urb);
+ usb_free_urb(as->usbout.durb[1].urb);
+ usb_free_urb(as->usbout.surb[0].urb);
+ usb_free_urb(as->usbout.surb[1].urb);
+ kfree(as);
+ return;
+ }
+ as->state = s;
+ as->usbin.interface = asifin;
+ as->usbout.interface = asifout;
+ /* search for input formats */
+ if (asifin >= 0) {
+ as->usbin.flags = FLG_CONNECTED;
+ iface = usb_ifnum_to_if(dev, asifin);
+ for (idx = 0; idx < iface->num_altsetting; idx++) {
+ alts = &iface->altsetting[idx];
+ i = alts->desc.bAlternateSetting;
+ if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO || alts->desc.bInterfaceSubClass != 2)
+ continue;
+ if (alts->desc.bNumEndpoints < 1) {
+ if (i != 0) { /* altsetting 0 has no endpoints (Section B.3.4.1) */
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u does not have an endpoint\n",
+ dev->devnum, asifin, i);
+ }
+ continue;
+ }
+ if ((alts->endpoint[0].desc.bmAttributes & 0x03) != 0x01 ||
+ !(alts->endpoint[0].desc.bEndpointAddress & 0x80)) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u first endpoint not isochronous in\n",
+ dev->devnum, asifin, i);
+ continue;
+ }
+ fmt = find_csinterface_descriptor(buffer, buflen, NULL, AS_GENERAL, asifin, i);
+ if (!fmt) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
+ dev->devnum, asifin, i);
+ continue;
+ }
+ if (fmt[0] < 7 || fmt[6] != 0 || (fmt[5] != 1 && fmt[5] != 2)) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u format not supported\n",
+ dev->devnum, asifin, i);
+ continue;
+ }
+ format = (fmt[5] == 2) ? (AFMT_U16_LE | AFMT_U8) : (AFMT_S16_LE | AFMT_S8);
+ fmt = find_csinterface_descriptor(buffer, buflen, NULL, FORMAT_TYPE, asifin, i);
+ if (!fmt) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
+ dev->devnum, asifin, i);
+ continue;
+ }
+ if (fmt[0] < 8+3*(fmt[7] ? fmt[7] : 2) || fmt[3] != 1) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not supported\n",
+ dev->devnum, asifin, i);
+ continue;
+ }
+ if (fmt[4] < 1 || fmt[4] > 2 || fmt[5] < 1 || fmt[5] > 2) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u unsupported channels %u framesize %u\n",
+ dev->devnum, asifin, i, fmt[4], fmt[5]);
+ continue;
+ }
+ csep = find_descriptor(buffer, buflen, NULL, USB_DT_CS_ENDPOINT, asifin, i);
+ if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u no or invalid class specific endpoint descriptor\n",
+ dev->devnum, asifin, i);
+ continue;
+ }
+ if (as->numfmtin >= MAXFORMATS)
+ continue;
+ fp = &as->fmtin[as->numfmtin++];
+ if (fmt[5] == 2)
+ format &= (AFMT_U16_LE | AFMT_S16_LE);
+ else
+ format &= (AFMT_U8 | AFMT_S8);
+ if (fmt[4] == 2)
+ format |= AFMT_STEREO;
+ fp->format = format;
+ fp->altsetting = i;
+ fp->sratelo = fp->sratehi = fmt[8] | (fmt[9] << 8) | (fmt[10] << 16);
+ printk(KERN_INFO "usbaudio: valid input sample rate %u\n", fp->sratelo);
+ for (j = fmt[7] ? (fmt[7]-1) : 1; j > 0; j--) {
+ k = fmt[8+3*j] | (fmt[9+3*j] << 8) | (fmt[10+3*j] << 16);
+ printk(KERN_INFO "usbaudio: valid input sample rate %u\n", k);
+ if (k > fp->sratehi)
+ fp->sratehi = k;
+ if (k < fp->sratelo)
+ fp->sratelo = k;
+ }
+ fp->attributes = csep[3];
+ printk(KERN_INFO "usbaudio: device %u interface %u altsetting %u: format 0x%08x sratelo %u sratehi %u attributes 0x%02x\n",
+ dev->devnum, asifin, i, fp->format, fp->sratelo, fp->sratehi, fp->attributes);
+ }
+ }
+ /* search for output formats */
+ if (asifout >= 0) {
+ as->usbout.flags = FLG_CONNECTED;
+ iface = usb_ifnum_to_if(dev, asifout);
+ for (idx = 0; idx < iface->num_altsetting; idx++) {
+ alts = &iface->altsetting[idx];
+ i = alts->desc.bAlternateSetting;
+ if (alts->desc.bInterfaceClass != USB_CLASS_AUDIO || alts->desc.bInterfaceSubClass != 2)
+ continue;
+ if (alts->desc.bNumEndpoints < 1) {
+ /* altsetting 0 should never have iso EPs */
+ if (i != 0)
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u does not have an endpoint\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ if ((alts->endpoint[0].desc.bmAttributes & 0x03) != 0x01 ||
+ (alts->endpoint[0].desc.bEndpointAddress & 0x80)) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u first endpoint not isochronous out\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ /* See USB audio formats manual, section 2 */
+ fmt = find_csinterface_descriptor(buffer, buflen, NULL, AS_GENERAL, asifout, i);
+ if (!fmt) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ if (fmt[0] < 7 || fmt[6] != 0 || (fmt[5] != 1 && fmt[5] != 2)) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u format not supported\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ format = (fmt[5] == 2) ? (AFMT_U16_LE | AFMT_U8) : (AFMT_S16_LE | AFMT_S8);
+ /* Dallas DS4201 workaround */
+ if (le16_to_cpu(dev->descriptor.idVendor) == 0x04fa &&
+ le16_to_cpu(dev->descriptor.idProduct) == 0x4201)
+ format = (AFMT_S16_LE | AFMT_S8);
+ fmt = find_csinterface_descriptor(buffer, buflen, NULL, FORMAT_TYPE, asifout, i);
+ if (!fmt) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not found\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ if (fmt[0] < 8+3*(fmt[7] ? fmt[7] : 2) || fmt[3] != 1) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u FORMAT_TYPE descriptor not supported\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ if (fmt[4] < 1 || fmt[4] > 2 || fmt[5] < 1 || fmt[5] > 2) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u unsupported channels %u framesize %u\n",
+ dev->devnum, asifout, i, fmt[4], fmt[5]);
+ continue;
+ }
+ csep = find_descriptor(buffer, buflen, NULL, USB_DT_CS_ENDPOINT, asifout, i);
+ if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
+ printk(KERN_ERR "usbaudio: device %u interface %u altsetting %u no or invalid class specific endpoint descriptor\n",
+ dev->devnum, asifout, i);
+ continue;
+ }
+ if (as->numfmtout >= MAXFORMATS)
+ continue;
+ fp = &as->fmtout[as->numfmtout++];
+ if (fmt[5] == 2)
+ format &= (AFMT_U16_LE | AFMT_S16_LE);
+ else
+ format &= (AFMT_U8 | AFMT_S8);
+ if (fmt[4] == 2)
+ format |= AFMT_STEREO;
+ fp->format = format;
+ fp->altsetting = i;
+ fp->sratelo = fp->sratehi = fmt[8] | (fmt[9] << 8) | (fmt[10] << 16);
+ printk(KERN_INFO "usbaudio: valid output sample rate %u\n", fp->sratelo);
+ for (j = fmt[7] ? (fmt[7]-1) : 1; j > 0; j--) {
+ k = fmt[8+3*j] | (fmt[9+3*j] << 8) | (fmt[10+3*j] << 16);
+ printk(KERN_INFO "usbaudio: valid output sample rate %u\n", k);
+ if (k > fp->sratehi)
+ fp->sratehi = k;
+ if (k < fp->sratelo)
+ fp->sratelo = k;
+ }
+ fp->attributes = csep[3];
+ printk(KERN_INFO "usbaudio: device %u interface %u altsetting %u: format 0x%08x sratelo %u sratehi %u attributes 0x%02x\n",
+ dev->devnum, asifout, i, fp->format, fp->sratelo, fp->sratehi, fp->attributes);
+ }
+ }
+ if (as->numfmtin == 0 && as->numfmtout == 0) {
+ usb_free_urb(as->usbin.durb[0].urb);
+ usb_free_urb(as->usbin.durb[1].urb);
+ usb_free_urb(as->usbin.surb[0].urb);
+ usb_free_urb(as->usbin.surb[1].urb);
+ usb_free_urb(as->usbout.durb[0].urb);
+ usb_free_urb(as->usbout.durb[1].urb);
+ usb_free_urb(as->usbout.surb[0].urb);
+ usb_free_urb(as->usbout.surb[1].urb);
+ kfree(as);
+ return;
+ }
+ if ((as->dev_audio = register_sound_dsp(&usb_audio_fops, -1)) < 0) {
+ printk(KERN_ERR "usbaudio: cannot register dsp\n");
+ usb_free_urb(as->usbin.durb[0].urb);
+ usb_free_urb(as->usbin.durb[1].urb);
+ usb_free_urb(as->usbin.surb[0].urb);
+ usb_free_urb(as->usbin.surb[1].urb);
+ usb_free_urb(as->usbout.durb[0].urb);
+ usb_free_urb(as->usbout.durb[1].urb);
+ usb_free_urb(as->usbout.surb[0].urb);
+ usb_free_urb(as->usbout.surb[1].urb);
+ kfree(as);
+ return;
+ }
+ printk(KERN_INFO "usbaudio: registered dsp 14,%d\n", as->dev_audio);
+ /* everything successful */
+ list_add_tail(&as->list, &s->audiolist);
+}
+
+struct consmixstate {
+ struct usb_audio_state *s;
+ unsigned char *buffer;
+ unsigned int buflen;
+ unsigned int ctrlif;
+ struct mixerchannel mixch[SOUND_MIXER_NRDEVICES];
+ unsigned int nrmixch;
+ unsigned int mixchmask;
+ unsigned long unitbitmap[32/sizeof(unsigned long)];
+ /* return values */
+ unsigned int nrchannels;
+ unsigned int termtype;
+ unsigned int chconfig;
+};
+
+static struct mixerchannel *getmixchannel(struct consmixstate *state, unsigned int nr)
+{
+ struct mixerchannel *c;
+
+ if (nr >= SOUND_MIXER_NRDEVICES) {
+ printk(KERN_ERR "usbaudio: invalid OSS mixer channel %u\n", nr);
+ return NULL;
+ }
+ if (!(state->mixchmask & (1 << nr))) {
+ printk(KERN_WARNING "usbaudio: OSS mixer channel %u already in use\n", nr);
+ return NULL;
+ }
+ c = &state->mixch[state->nrmixch++];
+ c->osschannel = nr;
+ state->mixchmask &= ~(1 << nr);
+ return c;
+}
+
+static unsigned int getvolchannel(struct consmixstate *state)
+{
+ unsigned int u;
+
+ if ((state->termtype & 0xff00) == 0x0000 && (state->mixchmask & SOUND_MASK_VOLUME))
+ return SOUND_MIXER_VOLUME;
+ if ((state->termtype & 0xff00) == 0x0100) {
+ if (state->mixchmask & SOUND_MASK_PCM)
+ return SOUND_MIXER_PCM;
+ if (state->mixchmask & SOUND_MASK_ALTPCM)
+ return SOUND_MIXER_ALTPCM;
+ }
+ if ((state->termtype & 0xff00) == 0x0200 && (state->mixchmask & SOUND_MASK_MIC))
+ return SOUND_MIXER_MIC;
+ if ((state->termtype & 0xff00) == 0x0300 && (state->mixchmask & SOUND_MASK_SPEAKER))
+ return SOUND_MIXER_SPEAKER;
+ if ((state->termtype & 0xff00) == 0x0500) {
+ if (state->mixchmask & SOUND_MASK_PHONEIN)
+ return SOUND_MIXER_PHONEIN;
+ if (state->mixchmask & SOUND_MASK_PHONEOUT)
+ return SOUND_MIXER_PHONEOUT;
+ }
+ if (state->termtype >= 0x710 && state->termtype <= 0x711 && (state->mixchmask & SOUND_MASK_RADIO))
+ return SOUND_MIXER_RADIO;
+ if (state->termtype >= 0x709 && state->termtype <= 0x70f && (state->mixchmask & SOUND_MASK_VIDEO))
+ return SOUND_MIXER_VIDEO;
+ u = ffs(state->mixchmask & (SOUND_MASK_LINE | SOUND_MASK_CD | SOUND_MASK_LINE1 | SOUND_MASK_LINE2 | SOUND_MASK_LINE3 |
+ SOUND_MASK_DIGITAL1 | SOUND_MASK_DIGITAL2 | SOUND_MASK_DIGITAL3));
+ return u-1;
+}
+
+static void prepmixch(struct consmixstate *state)
+{
+ struct usb_device *dev = state->s->usbdev;
+ struct mixerchannel *ch;
+ unsigned char *buf;
+ __s16 v1;
+ unsigned int v2, v3;
+
+ if (!state->nrmixch || state->nrmixch > SOUND_MIXER_NRDEVICES)
+ return;
+ buf = kmalloc(sizeof(*buf) * 2, GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_ERR "prepmixch: out of memory\n") ;
+ return;
+ }
+
+ ch = &state->mixch[state->nrmixch-1];
+ switch (ch->selector) {
+ case 0: /* mixer unit request */
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ ch->minval = buf[0] | (buf[1] << 8);
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ ch->maxval = buf[0] | (buf[1] << 8);
+ v2 = ch->maxval - ch->minval;
+ if (!v2)
+ v2 = 1;
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->chnum << 8) | 1, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ v1 = buf[0] | (buf[1] << 8);
+ v3 = v1 - ch->minval;
+ v3 = 100 * v3 / v2;
+ if (v3 > 100)
+ v3 = 100;
+ ch->value = v3;
+ if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ ((ch->chnum + !!(ch->flags & MIXFLG_STEREOIN)) << 8) | (1 + !!(ch->flags & MIXFLG_STEREOOUT)),
+ state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ v1 = buf[0] | (buf[1] << 8);
+ v3 = v1 - ch->minval;
+ v3 = 100 * v3 / v2;
+ if (v3 > 100)
+ v3 = 100;
+ }
+ ch->value |= v3 << 8;
+ break;
+
+ /* various feature unit controls */
+ case VOLUME_CONTROL:
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ ch->minval = buf[0] | (buf[1] << 8);
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ ch->maxval = buf[0] | (buf[1] << 8);
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ v1 = buf[0] | (buf[1] << 8);
+ v2 = ch->maxval - ch->minval;
+ v3 = v1 - ch->minval;
+ if (!v2)
+ v2 = 1;
+ v3 = 100 * v3 / v2;
+ if (v3 > 100)
+ v3 = 100;
+ ch->value = v3;
+ if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | (ch->chnum + 1), state->ctrlif | (ch->unitid << 8), buf, 2, 1000) < 0)
+ goto err;
+ v1 = buf[0] | (buf[1] << 8);
+ v3 = v1 - ch->minval;
+ v3 = 100 * v3 / v2;
+ if (v3 > 100)
+ v3 = 100;
+ }
+ ch->value |= v3 << 8;
+ break;
+
+ case BASS_CONTROL:
+ case MID_CONTROL:
+ case TREBLE_CONTROL:
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MIN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
+ goto err;
+ ch->minval = buf[0] << 8;
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_MAX, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
+ goto err;
+ ch->maxval = buf[0] << 8;
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | ch->chnum, state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
+ goto err;
+ v1 = buf[0] << 8;
+ v2 = ch->maxval - ch->minval;
+ v3 = v1 - ch->minval;
+ if (!v2)
+ v2 = 1;
+ v3 = 100 * v3 / v2;
+ if (v3 > 100)
+ v3 = 100;
+ ch->value = v3;
+ if (ch->flags & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)) {
+ if (usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
+ (ch->selector << 8) | (ch->chnum + 1), state->ctrlif | (ch->unitid << 8), buf, 1, 1000) < 0)
+ goto err;
+ v1 = buf[0] << 8;
+ v3 = v1 - ch->minval;
+ v3 = 100 * v3 / v2;
+ if (v3 > 100)
+ v3 = 100;
+ }
+ ch->value |= v3 << 8;
+ break;
+
+ default:
+ goto err;
+ }
+
+ freebuf:
+ kfree(buf);
+ return;
+ err:
+ printk(KERN_ERR "usbaudio: mixer request device %u if %u unit %u ch %u selector %u failed\n",
+ dev->devnum, state->ctrlif, ch->unitid, ch->chnum, ch->selector);
+ if (state->nrmixch)
+ state->nrmixch--;
+ goto freebuf;
+}
+
+
+static void usb_audio_recurseunit(struct consmixstate *state, unsigned char unitid);
+
+static inline int checkmixbmap(unsigned char *bmap, unsigned char flg, unsigned int inidx, unsigned int numoch)
+{
+ unsigned int idx;
+
+ idx = inidx*numoch;
+ if (!(bmap[-(idx >> 3)] & (0x80 >> (idx & 7))))
+ return 0;
+ if (!(flg & (MIXFLG_STEREOIN | MIXFLG_STEREOOUT)))
+ return 1;
+ idx = (inidx+!!(flg & MIXFLG_STEREOIN))*numoch+!!(flg & MIXFLG_STEREOOUT);
+ if (!(bmap[-(idx >> 3)] & (0x80 >> (idx & 7))))
+ return 0;
+ return 1;
+}
+
+static void usb_audio_mixerunit(struct consmixstate *state, unsigned char *mixer)
+{
+ unsigned int nroutch = mixer[5+mixer[4]];
+ unsigned int chidx[SOUND_MIXER_NRDEVICES+1];
+ unsigned int termt[SOUND_MIXER_NRDEVICES];
+ unsigned char flg = (nroutch >= 2) ? MIXFLG_STEREOOUT : 0;
+ unsigned char *bmap = &mixer[9+mixer[4]];
+ unsigned int bmapsize;
+ struct mixerchannel *ch;
+ unsigned int i;
+
+ if (!mixer[4]) {
+ printk(KERN_ERR "usbaudio: unit %u invalid MIXER_UNIT descriptor\n", mixer[3]);
+ return;
+ }
+ if (mixer[4] > SOUND_MIXER_NRDEVICES) {
+ printk(KERN_ERR "usbaudio: mixer unit %u: too many input pins\n", mixer[3]);
+ return;
+ }
+ chidx[0] = 0;
+ for (i = 0; i < mixer[4]; i++) {
+ usb_audio_recurseunit(state, mixer[5+i]);
+ chidx[i+1] = chidx[i] + state->nrchannels;
+ termt[i] = state->termtype;
+ }
+ state->termtype = 0;
+ state->chconfig = mixer[6+mixer[4]] | (mixer[7+mixer[4]] << 8);
+ bmapsize = (nroutch * chidx[mixer[4]] + 7) >> 3;
+ bmap += bmapsize - 1;
+ if (mixer[0] < 10+mixer[4]+bmapsize) {
+ printk(KERN_ERR "usbaudio: unit %u invalid MIXER_UNIT descriptor (bitmap too small)\n", mixer[3]);
+ return;
+ }
+ for (i = 0; i < mixer[4]; i++) {
+ state->termtype = termt[i];
+ if (chidx[i+1]-chidx[i] >= 2) {
+ flg |= MIXFLG_STEREOIN;
+ if (checkmixbmap(bmap, flg, chidx[i], nroutch)) {
+ ch = getmixchannel(state, getvolchannel(state));
+ if (ch) {
+ ch->unitid = mixer[3];
+ ch->selector = 0;
+ ch->chnum = chidx[i]+1;
+ ch->flags = flg;
+ prepmixch(state);
+ }
+ continue;
+ }
+ }
+ flg &= ~MIXFLG_STEREOIN;
+ if (checkmixbmap(bmap, flg, chidx[i], nroutch)) {
+ ch = getmixchannel(state, getvolchannel(state));
+ if (ch) {
+ ch->unitid = mixer[3];
+ ch->selector = 0;
+ ch->chnum = chidx[i]+1;
+ ch->flags = flg;
+ prepmixch(state);
+ }
+ }
+ }
+ state->termtype = 0;
+}
+
+static struct mixerchannel *slctsrc_findunit(struct consmixstate *state, __u8 unitid)
+{
+ unsigned int i;
+
+ for (i = 0; i < state->nrmixch; i++)
+ if (state->mixch[i].unitid == unitid)
+ return &state->mixch[i];
+ return NULL;
+}
+
+static void usb_audio_selectorunit(struct consmixstate *state, unsigned char *selector)
+{
+ unsigned int chnum, i, mixch;
+ struct mixerchannel *mch;
+
+ if (!selector[4]) {
+ printk(KERN_ERR "usbaudio: unit %u invalid SELECTOR_UNIT descriptor\n", selector[3]);
+ return;
+ }
+ mixch = state->nrmixch;
+ usb_audio_recurseunit(state, selector[5]);
+ if (state->nrmixch != mixch) {
+ mch = &state->mixch[state->nrmixch-1];
+ mch->slctunitid = selector[3] | (1 << 8);
+ } else if ((mch = slctsrc_findunit(state, selector[5]))) {
+ mch->slctunitid = selector[3] | (1 << 8);
+ } else {
+ printk(KERN_INFO "usbaudio: selector unit %u: ignoring channel 1\n", selector[3]);
+ }
+ chnum = state->nrchannels;
+ for (i = 1; i < selector[4]; i++) {
+ mixch = state->nrmixch;
+ usb_audio_recurseunit(state, selector[5+i]);
+ if (chnum != state->nrchannels) {
+ printk(KERN_ERR "usbaudio: selector unit %u: input pins with varying channel numbers\n", selector[3]);
+ state->termtype = 0;
+ state->chconfig = 0;
+ state->nrchannels = 0;
+ return;
+ }
+ if (state->nrmixch != mixch) {
+ mch = &state->mixch[state->nrmixch-1];
+ mch->slctunitid = selector[3] | ((i + 1) << 8);
+ } else if ((mch = slctsrc_findunit(state, selector[5+i]))) {
+ mch->slctunitid = selector[3] | ((i + 1) << 8);
+ } else {
+ printk(KERN_INFO "usbaudio: selector unit %u: ignoring channel %u\n", selector[3], i+1);
+ }
+ }
+ state->termtype = 0;
+ state->chconfig = 0;
+}
+
+/* in the future we might try to handle 3D etc. effect units */
+
+static void usb_audio_processingunit(struct consmixstate *state, unsigned char *proc)
+{
+ unsigned int i;
+
+ for (i = 0; i < proc[6]; i++)
+ usb_audio_recurseunit(state, proc[7+i]);
+ state->nrchannels = proc[7+proc[6]];
+ state->termtype = 0;
+ state->chconfig = proc[8+proc[6]] | (proc[9+proc[6]] << 8);
+}
+
+
+/* See Audio Class Spec, section 4.3.2.5 */
+static void usb_audio_featureunit(struct consmixstate *state, unsigned char *ftr)
+{
+ struct mixerchannel *ch;
+ unsigned short chftr, mchftr;
+#if 0
+ struct usb_device *dev = state->s->usbdev;
+ unsigned char data[1];
+#endif
+ unsigned char nr_logical_channels, i;
+
+ usb_audio_recurseunit(state, ftr[4]);
+
+ if (ftr[5] == 0 ) {
+ printk(KERN_ERR "usbaudio: wrong controls size in feature unit %u\n",ftr[3]);
+ return;
+ }
+
+ if (state->nrchannels == 0) {
+ printk(KERN_ERR "usbaudio: feature unit %u source has no channels\n", ftr[3]);
+ return;
+ }
+ if (state->nrchannels > 2)
+ printk(KERN_WARNING "usbaudio: feature unit %u: OSS mixer interface does not support more than 2 channels\n", ftr[3]);
+
+ nr_logical_channels=(ftr[0]-7)/ftr[5]-1;
+
+ if (nr_logical_channels != state->nrchannels) {
+ printk(KERN_WARNING "usbaudio: warning: found %d of %d logical channels.\n", state->nrchannels,nr_logical_channels);
+
+ if (state->nrchannels == 1 && nr_logical_channels==0) {
+ printk(KERN_INFO "usbaudio: assuming the channel found is the master channel (got a Philips camera?). Should be fine.\n");
+ } else if (state->nrchannels == 1 && nr_logical_channels==2) {
+ printk(KERN_INFO "usbaudio: assuming that a stereo channel connected directly to a mixer is missing in search (got Labtec headset?). Should be fine.\n");
+ state->nrchannels=nr_logical_channels;
+ } else {
+ printk(KERN_WARNING "usbaudio: no idea what's going on..., contact linux-usb-devel@lists.sourceforge.net\n");
+ }
+ }
+
+ /* There is always a master channel */
+ mchftr = ftr[6];
+ /* Binary AND over logical channels if they exist */
+ if (nr_logical_channels) {
+ chftr = ftr[6+ftr[5]];
+ for (i = 2; i <= nr_logical_channels; i++)
+ chftr &= ftr[6+i*ftr[5]];
+ } else {
+ chftr = 0;
+ }
+
+ /* volume control */
+ if (chftr & 2) {
+ ch = getmixchannel(state, getvolchannel(state));
+ if (ch) {
+ ch->unitid = ftr[3];
+ ch->selector = VOLUME_CONTROL;
+ ch->chnum = 1;
+ ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
+ prepmixch(state);
+ }
+ } else if (mchftr & 2) {
+ ch = getmixchannel(state, getvolchannel(state));
+ if (ch) {
+ ch->unitid = ftr[3];
+ ch->selector = VOLUME_CONTROL;
+ ch->chnum = 0;
+ ch->flags = 0;
+ prepmixch(state);
+ }
+ }
+ /* bass control */
+ if (chftr & 4) {
+ ch = getmixchannel(state, SOUND_MIXER_BASS);
+ if (ch) {
+ ch->unitid = ftr[3];
+ ch->selector = BASS_CONTROL;
+ ch->chnum = 1;
+ ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
+ prepmixch(state);
+ }
+ } else if (mchftr & 4) {
+ ch = getmixchannel(state, SOUND_MIXER_BASS);
+ if (ch) {
+ ch->unitid = ftr[3];
+ ch->selector = BASS_CONTROL;
+ ch->chnum = 0;
+ ch->flags = 0;
+ prepmixch(state);
+ }
+ }
+ /* treble control */
+ if (chftr & 16) {
+ ch = getmixchannel(state, SOUND_MIXER_TREBLE);
+ if (ch) {
+ ch->unitid = ftr[3];
+ ch->selector = TREBLE_CONTROL;
+ ch->chnum = 1;
+ ch->flags = (state->nrchannels > 1) ? (MIXFLG_STEREOIN | MIXFLG_STEREOOUT) : 0;
+ prepmixch(state);
+ }
+ } else if (mchftr & 16) {
+ ch = getmixchannel(state, SOUND_MIXER_TREBLE);
+ if (ch) {
+ ch->unitid = ftr[3];
+ ch->selector = TREBLE_CONTROL;
+ ch->chnum = 0;
+ ch->flags = 0;
+ prepmixch(state);
+ }
+ }
+#if 0
+ /* if there are mute controls, unmute them */
+ /* does not seem to be necessary, and the Dallas chip does not seem to support the "all" channel (255) */
+ if ((chftr & 1) || (mchftr & 1)) {
+ printk(KERN_DEBUG "usbaudio: unmuting feature unit %u interface %u\n", ftr[3], state->ctrlif);
+ data[0] = 0;
+ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ (MUTE_CONTROL << 8) | 0xff, state->ctrlif | (ftr[3] << 8), data, 1, 1000) < 0)
+ printk(KERN_WARNING "usbaudio: failure to unmute feature unit %u interface %u\n", ftr[3], state->ctrlif);
+ }
+#endif
+}
+
+static void usb_audio_recurseunit(struct consmixstate *state, unsigned char unitid)
+{
+ unsigned char *p1;
+ unsigned int i, j;
+
+ if (test_and_set_bit(unitid, state->unitbitmap)) {
+ printk(KERN_INFO "usbaudio: mixer path revisits unit %d\n", unitid);
+ return;
+ }
+ p1 = find_audiocontrol_unit(state->buffer, state->buflen, NULL, unitid, state->ctrlif);
+ if (!p1) {
+ printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
+ return;
+ }
+ state->nrchannels = 0;
+ state->termtype = 0;
+ state->chconfig = 0;
+ switch (p1[2]) {
+ case INPUT_TERMINAL:
+ if (p1[0] < 12) {
+ printk(KERN_ERR "usbaudio: unit %u: invalid INPUT_TERMINAL descriptor\n", unitid);
+ return;
+ }
+ state->nrchannels = p1[7];
+ state->termtype = p1[4] | (p1[5] << 8);
+ state->chconfig = p1[8] | (p1[9] << 8);
+ return;
+
+ case MIXER_UNIT:
+ if (p1[0] < 10 || p1[0] < 10+p1[4]) {
+ printk(KERN_ERR "usbaudio: unit %u: invalid MIXER_UNIT descriptor\n", unitid);
+ return;
+ }
+ usb_audio_mixerunit(state, p1);
+ return;
+
+ case SELECTOR_UNIT:
+ if (p1[0] < 6 || p1[0] < 6+p1[4]) {
+ printk(KERN_ERR "usbaudio: unit %u: invalid SELECTOR_UNIT descriptor\n", unitid);
+ return;
+ }
+ usb_audio_selectorunit(state, p1);
+ return;
+
+ case FEATURE_UNIT: /* See USB Audio Class Spec 4.3.2.5 */
+ if (p1[0] < 7 || p1[0] < 7+p1[5]) {
+ printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
+ return;
+ }
+ usb_audio_featureunit(state, p1);
+ return;
+
+ case PROCESSING_UNIT:
+ if (p1[0] < 13 || p1[0] < 13+p1[6] || p1[0] < 13+p1[6]+p1[11+p1[6]]) {
+ printk(KERN_ERR "usbaudio: unit %u: invalid PROCESSING_UNIT descriptor\n", unitid);
+ return;
+ }
+ usb_audio_processingunit(state, p1);
+ return;
+
+ case EXTENSION_UNIT:
+ if (p1[0] < 13 || p1[0] < 13+p1[6] || p1[0] < 13+p1[6]+p1[11+p1[6]]) {
+ printk(KERN_ERR "usbaudio: unit %u: invalid EXTENSION_UNIT descriptor\n", unitid);
+ return;
+ }
+ for (j = i = 0; i < p1[6]; i++) {
+ usb_audio_recurseunit(state, p1[7+i]);
+ if (!i)
+ j = state->termtype;
+ else if (j != state->termtype)
+ j = 0;
+ }
+ state->nrchannels = p1[7+p1[6]];
+ state->chconfig = p1[8+p1[6]] | (p1[9+p1[6]] << 8);
+ state->termtype = j;
+ return;
+
+ default:
+ printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
+ return;
+ }
+}
+
+static void usb_audio_constructmixer(struct usb_audio_state *s, unsigned char *buffer, unsigned int buflen, unsigned int ctrlif, unsigned char *oterm)
+{
+ struct usb_mixerdev *ms;
+ struct consmixstate state;
+
+ memset(&state, 0, sizeof(state));
+ state.s = s;
+ state.nrmixch = 0;
+ state.mixchmask = ~0;
+ state.buffer = buffer;
+ state.buflen = buflen;
+ state.ctrlif = ctrlif;
+ set_bit(oterm[3], state.unitbitmap); /* mark terminal ID as visited */
+ printk(KERN_DEBUG "usbaudio: constructing mixer for Terminal %u type 0x%04x\n",
+ oterm[3], oterm[4] | (oterm[5] << 8));
+ usb_audio_recurseunit(&state, oterm[7]);
+ if (!state.nrmixch) {
+ printk(KERN_INFO "usbaudio: no mixer controls found for Terminal %u\n", oterm[3]);
+ return;
+ }
+ if (!(ms = kmalloc(sizeof(struct usb_mixerdev)+state.nrmixch*sizeof(struct mixerchannel), GFP_KERNEL)))
+ return;
+ memset(ms, 0, sizeof(struct usb_mixerdev));
+ memcpy(&ms->ch, &state.mixch, state.nrmixch*sizeof(struct mixerchannel));
+ ms->state = s;
+ ms->iface = ctrlif;
+ ms->numch = state.nrmixch;
+ if ((ms->dev_mixer = register_sound_mixer(&usb_mixer_fops, -1)) < 0) {
+ printk(KERN_ERR "usbaudio: cannot register mixer\n");
+ kfree(ms);
+ return;
+ }
+ printk(KERN_INFO "usbaudio: registered mixer 14,%d\n", ms->dev_mixer);
+ list_add_tail(&ms->list, &s->mixerlist);
+}
+
+/* arbitrary limit, we won't check more interfaces than this */
+#define USB_MAXINTERFACES 32
+
+static struct usb_audio_state *usb_audio_parsecontrol(struct usb_device *dev, unsigned char *buffer, unsigned int buflen, unsigned int ctrlif)
+{
+ struct usb_audio_state *s;
+ struct usb_interface *iface;
+ struct usb_host_interface *alt;
+ unsigned char ifin[USB_MAXINTERFACES], ifout[USB_MAXINTERFACES];
+ unsigned char *p1;
+ unsigned int i, j, k, numifin = 0, numifout = 0;
+
+ if (!(s = kmalloc(sizeof(struct usb_audio_state), GFP_KERNEL)))
+ return NULL;
+ memset(s, 0, sizeof(struct usb_audio_state));
+ INIT_LIST_HEAD(&s->audiolist);
+ INIT_LIST_HEAD(&s->mixerlist);
+ s->usbdev = dev;
+ s->count = 1;
+
+ /* find audiocontrol interface */
+ if (!(p1 = find_csinterface_descriptor(buffer, buflen, NULL, HEADER, ctrlif, -1))) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u no HEADER found\n",
+ dev->devnum, ctrlif);
+ goto ret;
+ }
+ if (p1[0] < 8 + p1[7]) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u HEADER error\n",
+ dev->devnum, ctrlif);
+ goto ret;
+ }
+ if (!p1[7])
+ printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u has no AudioStreaming and MidiStreaming interfaces\n",
+ dev->devnum, ctrlif);
+ for (i = 0; i < p1[7]; i++) {
+ j = p1[8+i];
+ iface = usb_ifnum_to_if(dev, j);
+ if (!iface) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u does not exist\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ if (iface->num_altsetting == 1) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u has only 1 altsetting.\n", dev->devnum, ctrlif);
+ continue;
+ }
+ alt = usb_altnum_to_altsetting(iface, 0);
+ if (!alt) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no altsetting 0\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ if (alt->desc.bInterfaceClass != USB_CLASS_AUDIO) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u is not an AudioClass interface\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ if (alt->desc.bInterfaceSubClass == 3) {
+ printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u interface %u MIDIStreaming not supported\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ if (alt->desc.bInterfaceSubClass != 2) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u invalid AudioClass subtype\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ if (alt->desc.bNumEndpoints > 0) {
+ /* Check all endpoints; should they all have a bandwidth of 0 ? */
+ for (k = 0; k < alt->desc.bNumEndpoints; k++) {
+ if (le16_to_cpu(alt->endpoint[k].desc.wMaxPacketSize) > 0) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u endpoint %d does not have 0 bandwidth at alt[0]\n", dev->devnum, ctrlif, k);
+ break;
+ }
+ }
+ if (k < alt->desc.bNumEndpoints)
+ continue;
+ }
+
+ alt = usb_altnum_to_altsetting(iface, 1);
+ if (!alt) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no altsetting 1\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ if (alt->desc.bNumEndpoints < 1) {
+ printk(KERN_ERR "usbaudio: device %d audiocontrol interface %u interface %u has no endpoint\n",
+ dev->devnum, ctrlif, j);
+ continue;
+ }
+ /* note: this requires the data endpoint to be ep0 and the optional sync
+ ep to be ep1, which seems to be the case */
+ if (alt->endpoint[0].desc.bEndpointAddress & USB_DIR_IN) {
+ if (numifin < USB_MAXINTERFACES) {
+ ifin[numifin++] = j;
+ usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1);
+ }
+ } else {
+ if (numifout < USB_MAXINTERFACES) {
+ ifout[numifout++] = j;
+ usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1);
+ }
+ }
+ }
+ printk(KERN_INFO "usbaudio: device %d audiocontrol interface %u has %u input and %u output AudioStreaming interfaces\n",
+ dev->devnum, ctrlif, numifin, numifout);
+ for (i = 0; i < numifin && i < numifout; i++)
+ usb_audio_parsestreaming(s, buffer, buflen, ifin[i], ifout[i]);
+ for (j = i; j < numifin; j++)
+ usb_audio_parsestreaming(s, buffer, buflen, ifin[i], -1);
+ for (j = i; j < numifout; j++)
+ usb_audio_parsestreaming(s, buffer, buflen, -1, ifout[i]);
+ /* now walk through all OUTPUT_TERMINAL descriptors to search for mixers */
+ p1 = find_csinterface_descriptor(buffer, buflen, NULL, OUTPUT_TERMINAL, ctrlif, -1);
+ while (p1) {
+ if (p1[0] >= 9)
+ usb_audio_constructmixer(s, buffer, buflen, ctrlif, p1);
+ p1 = find_csinterface_descriptor(buffer, buflen, p1, OUTPUT_TERMINAL, ctrlif, -1);
+ }
+
+ret:
+ if (list_empty(&s->audiolist) && list_empty(&s->mixerlist)) {
+ kfree(s);
+ return NULL;
+ }
+ /* everything successful */
+ down(&open_sem);
+ list_add_tail(&s->audiodev, &audiodevs);
+ up(&open_sem);
+ printk(KERN_DEBUG "usb_audio_parsecontrol: usb_audio_state at %p\n", s);
+ return s;
+}
+
+/* we only care for the currently active configuration */
+
+static int usb_audio_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev (intf);
+ struct usb_audio_state *s;
+ unsigned char *buffer;
+ unsigned int buflen;
+
+#if 0
+ printk(KERN_DEBUG "usbaudio: Probing if %i: IC %x, ISC %x\n", ifnum,
+ config->interface[ifnum].altsetting[0].desc.bInterfaceClass,
+ config->interface[ifnum].altsetting[0].desc.bInterfaceSubClass);
+#endif
+
+ /*
+ * audiocontrol interface found
+ * find which configuration number is active
+ */
+ buffer = dev->rawdescriptors[dev->actconfig - dev->config];
+ buflen = le16_to_cpu(dev->actconfig->desc.wTotalLength);
+ s = usb_audio_parsecontrol(dev, buffer, buflen, intf->altsetting->desc.bInterfaceNumber);
+ if (s) {
+ usb_set_intfdata (intf, s);
+ return 0;
+ }
+ return -ENODEV;
+}
+
+
+/* a revoke facility would make things simpler */
+
+static void usb_audio_disconnect(struct usb_interface *intf)
+{
+ struct usb_audio_state *s = usb_get_intfdata (intf);
+ struct usb_audiodev *as;
+ struct usb_mixerdev *ms;
+
+ if (!s)
+ return;
+
+ /* we get called with -1 for every audiostreaming interface registered */
+ if (s == (struct usb_audio_state *)-1) {
+ dprintk((KERN_DEBUG "usbaudio: note, usb_audio_disconnect called with -1\n"));
+ return;
+ }
+ if (!s->usbdev) {
+ dprintk((KERN_DEBUG "usbaudio: error, usb_audio_disconnect already called for %p!\n", s));
+ return;
+ }
+ down(&open_sem);
+ list_del_init(&s->audiodev);
+ s->usbdev = NULL;
+ usb_set_intfdata (intf, NULL);
+
+ /* deregister all audio and mixer devices, so no new processes can open this device */
+ list_for_each_entry(as, &s->audiolist, list) {
+ usbin_disc(as);
+ usbout_disc(as);
+ wake_up(&as->usbin.dma.wait);
+ wake_up(&as->usbout.dma.wait);
+ if (as->dev_audio >= 0) {
+ unregister_sound_dsp(as->dev_audio);
+ printk(KERN_INFO "usbaudio: unregister dsp 14,%d\n", as->dev_audio);
+ }
+ as->dev_audio = -1;
+ }
+ list_for_each_entry(ms, &s->mixerlist, list) {
+ if (ms->dev_mixer >= 0) {
+ unregister_sound_mixer(ms->dev_mixer);
+ printk(KERN_INFO "usbaudio: unregister mixer 14,%d\n", ms->dev_mixer);
+ }
+ ms->dev_mixer = -1;
+ }
+ release(s);
+ wake_up(&open_wait);
+}
+
+static int __init usb_audio_init(void)
+{
+ int result = usb_register(&usb_audio_driver);
+ if (result == 0)
+ info(DRIVER_VERSION ":" DRIVER_DESC);
+ return result;
+}
+
+
+static void __exit usb_audio_cleanup(void)
+{
+ usb_deregister(&usb_audio_driver);
+}
+
+module_init(usb_audio_init);
+module_exit(usb_audio_cleanup);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/usb/class/audio.h b/drivers/usb/class/audio.h
new file mode 100644
index 0000000..45916eb
--- /dev/null
+++ b/drivers/usb/class/audio.h
@@ -0,0 +1,110 @@
+#define CS_AUDIO_UNDEFINED 0x20
+#define CS_AUDIO_DEVICE 0x21
+#define CS_AUDIO_CONFIGURATION 0x22
+#define CS_AUDIO_STRING 0x23
+#define CS_AUDIO_INTERFACE 0x24
+#define CS_AUDIO_ENDPOINT 0x25
+
+#define HEADER 0x01
+#define INPUT_TERMINAL 0x02
+#define OUTPUT_TERMINAL 0x03
+#define MIXER_UNIT 0x04
+#define SELECTOR_UNIT 0x05
+#define FEATURE_UNIT 0x06
+#define PROCESSING_UNIT 0x07
+#define EXTENSION_UNIT 0x08
+
+#define AS_GENERAL 0x01
+#define FORMAT_TYPE 0x02
+#define FORMAT_SPECIFIC 0x03
+
+#define EP_GENERAL 0x01
+
+#define MAX_CHAN 9
+#define MAX_FREQ 16
+#define MAX_IFACE 8
+#define MAX_FORMAT 8
+#define MAX_ALT 32 /* Sorry, we need quite a few for the Philips webcams */
+
+struct usb_audio_terminal
+{
+ u8 flags;
+ u8 assoc;
+ u16 type; /* Mic etc */
+ u8 channels;
+ u8 source;
+ u16 chancfg;
+};
+
+struct usb_audio_format
+{
+ u8 type;
+ u8 channels;
+ u8 num_freq;
+ u8 sfz;
+ u8 bits;
+ u16 freq[MAX_FREQ];
+};
+
+struct usb_audio_interface
+{
+ u8 terminal;
+ u8 delay;
+ u16 num_formats;
+ u16 format_type;
+ u8 flags;
+ u8 idleconf; /* Idle config */
+#define AU_IFACE_FOUND 1
+ struct usb_audio_format format[MAX_FORMAT];
+};
+
+struct usb_audio_device
+{
+ struct list_head list;
+ u8 mixer;
+ u8 selector;
+ void *irq_handle;
+ u8 num_channels;
+ u8 num_dsp_iface;
+ u8 channel_map[MAX_CHAN];
+ struct usb_audio_terminal terminal[MAX_CHAN];
+ struct usb_audio_interface interface[MAX_IFACE][MAX_ALT];
+};
+
+
+
+/* Audio Class specific Request Codes */
+
+#define SET_CUR 0x01
+#define GET_CUR 0x81
+#define SET_MIN 0x02
+#define GET_MIN 0x82
+#define SET_MAX 0x03
+#define GET_MAX 0x83
+#define SET_RES 0x04
+#define GET_RES 0x84
+#define SET_MEM 0x05
+#define GET_MEM 0x85
+#define GET_STAT 0xff
+
+/* Terminal Control Selectors */
+
+#define COPY_PROTECT_CONTROL 0x01
+
+/* Feature Unit Control Selectors */
+
+#define MUTE_CONTROL 0x01
+#define VOLUME_CONTROL 0x02
+#define BASS_CONTROL 0x03
+#define MID_CONTROL 0x04
+#define TREBLE_CONTROL 0x05
+#define GRAPHIC_EQUALIZER_CONTROL 0x06
+#define AUTOMATIC_GAIN_CONTROL 0x07
+#define DELAY_CONTROL 0x08
+#define BASS_BOOST_CONTROL 0x09
+#define LOUDNESS_CONTROL 0x0a
+
+/* Endpoint Control Selectors */
+
+#define SAMPLING_FREQ_CONTROL 0x01
+#define PITCH_CONTROL 0x02
diff --git a/drivers/usb/class/bluetty.c b/drivers/usb/class/bluetty.c
new file mode 100644
index 0000000..6bac65e
--- /dev/null
+++ b/drivers/usb/class/bluetty.c
@@ -0,0 +1,1279 @@
+/*
+ * bluetty.c Version 0.13
+ *
+ * Copyright (C) 2000, 2001 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2000 Mark Douglas Corner <mcorner@umich.edu>
+ *
+ * USB Bluetooth TTY driver, based on the Bluetooth Spec version 1.0B
+ *
+ * (2001/11/30) Version 0.13 gkh
+ * - added locking patch from Masoodur Rahman <rmasoodu@in.ibm.com>
+ * - removed active variable, as open_count will do.
+ *
+ * (2001/07/09) Version 0.12 gkh
+ * - removed in_interrupt() call, as it doesn't make sense to do
+ * that anymore.
+ *
+ * (2001/06/05) Version 0.11 gkh
+ * - Fixed problem with read urb status saying that we have shutdown,
+ * and that we shouldn't resubmit the urb. Patch from unknown.
+ *
+ * (2001/05/28) Version 0.10 gkh
+ * - Fixed problem with using data from userspace in the bluetooth_write
+ * function as found by the CHECKER project.
+ * - Added a buffer to the write_urb_pool which reduces the number of
+ * buffers being created and destroyed for ever write. Also cleans
+ * up the logic a bit.
+ * - Added a buffer to the control_urb_pool which fixes a memory leak
+ * when the device is removed from the system.
+ *
+ * (2001/05/28) Version 0.9 gkh
+ * Fixed problem with bluetooth==NULL for bluetooth_read_bulk_callback
+ * which was found by both the CHECKER project and Mikko Rahkonen.
+ *
+ * (08/04/2001) gb
+ * Identify version on module load.
+ *
+ * (2001/03/10) Version 0.8 gkh
+ * Fixed problem with not unlinking interrupt urb on device close
+ * and resubmitting the read urb on error with bluetooth struct.
+ * Thanks to Narayan Mohanram <narayan@RovingNetworks.com> for the
+ * fixes.
+ *
+ * (11/29/2000) Version 0.7 gkh
+ * Fixed problem with overrunning the tty flip buffer.
+ * Removed unneeded NULL pointer initialization.
+ *
+ * (10/05/2000) Version 0.6 gkh
+ * Fixed bug with urb->dev not being set properly, now that the usb
+ * core needs it.
+ * Got a real major id number and name.
+ *
+ * (08/06/2000) Version 0.5 gkh
+ * Fixed problem of not resubmitting the bulk read urb if there is
+ * an error in the callback. Ericsson devices seem to need this.
+ *
+ * (07/11/2000) Version 0.4 gkh
+ * Fixed bug in disconnect for when we call tty_hangup
+ * Fixed bug in bluetooth_ctrl_msg where the bluetooth struct was not
+ * getting attached to the control urb properly.
+ * Fixed bug in bluetooth_write where we pay attention to the result
+ * of bluetooth_ctrl_msg.
+ *
+ * (08/03/2000) Version 0.3 gkh mdc
+ * Merged in Mark's changes to make the driver play nice with the Axis
+ * stack.
+ * Made the write bulk use an urb pool to enable larger transfers with
+ * fewer calls to the driver.
+ * Fixed off by one bug in acl pkt receive
+ * Made packet counters specific to each bluetooth device
+ * Added checks for zero length callbacks
+ * Added buffers for int and bulk packets. Had to do this otherwise
+ * packet types could intermingle.
+ * Made a control urb pool for the control messages.
+ *
+ * (07/11/2000) Version 0.2 gkh
+ * Fixed a small bug found by Nils Faerber in the usb_bluetooth_probe
+ * function.
+ *
+ * (07/09/2000) Version 0.1 gkh
+ * Initial release. Has support for sending ACL data (which is really just
+ * a HCI frame.) Raw HCI commands and HCI events are not supported.
+ * A ioctl will probably be needed for the HCI commands and events in the
+ * future. All isoch endpoints are ignored at this time also.
+ * This driver should work for all currently shipping USB Bluetooth
+ * devices at this time :)
+ *
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <asm/uaccess.h>
+
+#define DEBUG
+#include <linux/usb.h>
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.13"
+#define DRIVER_AUTHOR "Greg Kroah-Hartman, Mark Douglas Corner"
+#define DRIVER_DESC "USB Bluetooth tty driver"
+
+/* define this if you have hardware that is not good */
+/*#define BTBUGGYHARDWARE */
+
+/* Class, SubClass, and Protocol codes that describe a Bluetooth device */
+#define WIRELESS_CLASS_CODE 0xe0
+#define RF_SUBCLASS_CODE 0x01
+#define BLUETOOTH_PROGRAMMING_PROTOCOL_CODE 0x01
+
+
+#define BLUETOOTH_TTY_MAJOR 216 /* real device node major id */
+#define BLUETOOTH_TTY_MINORS 256 /* whole lotta bluetooth devices */
+
+#define USB_BLUETOOTH_MAGIC 0x6d02 /* magic number for bluetooth struct */
+
+#define BLUETOOTH_CONTROL_REQUEST_TYPE 0x20
+
+/* Bluetooth packet types */
+#define CMD_PKT 0x01
+#define ACL_PKT 0x02
+#define SCO_PKT 0x03
+#define EVENT_PKT 0x04
+#define ERROR_PKT 0x05
+#define NEG_PKT 0x06
+
+/* Message sizes */
+#define MAX_EVENT_SIZE 0xFF
+#define EVENT_HDR_SIZE 3 /* 2 for the header + 1 for the type indicator */
+#define EVENT_BUFFER_SIZE (MAX_EVENT_SIZE + EVENT_HDR_SIZE)
+
+#define MAX_ACL_SIZE 0xFFFF
+#define ACL_HDR_SIZE 5 /* 4 for the header + 1 for the type indicator */
+#define ACL_BUFFER_SIZE (MAX_ACL_SIZE + ACL_HDR_SIZE)
+
+/* parity check flag */
+#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+#define CHAR2INT16(c1,c0) (((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff))
+
+#define NUM_BULK_URBS 24
+#define NUM_CONTROL_URBS 16
+
+struct usb_bluetooth {
+ int magic;
+ struct usb_device * dev;
+ struct tty_driver * tty_driver; /* the tty_driver for this device */
+ struct tty_struct * tty; /* the corresponding tty for this port */
+
+ unsigned char minor; /* the starting minor number for this device */
+ int throttle; /* throttled by tty layer */
+ int open_count;
+
+ __u8 control_out_bInterfaceNum;
+ struct urb * control_urb_pool[NUM_CONTROL_URBS];
+ struct usb_ctrlrequest dr[NUM_CONTROL_URBS];
+
+ unsigned char * interrupt_in_buffer;
+ struct urb * interrupt_in_urb;
+ __u8 interrupt_in_endpointAddress;
+ __u8 interrupt_in_interval;
+ int interrupt_in_buffer_size;
+
+ unsigned char * bulk_in_buffer;
+ struct urb * read_urb;
+ __u8 bulk_in_endpointAddress;
+ int bulk_in_buffer_size;
+
+ int bulk_out_buffer_size;
+ __u8 bulk_out_endpointAddress;
+
+ wait_queue_head_t write_wait;
+
+ struct work_struct work; /* work queue entry for line discipline waking up */
+
+ unsigned int int_packet_pos;
+ unsigned char int_buffer[EVENT_BUFFER_SIZE];
+ unsigned int bulk_packet_pos;
+ unsigned char bulk_buffer[ACL_BUFFER_SIZE]; /* 64k preallocated, fix? */
+ struct semaphore lock;
+};
+
+
+/* local function prototypes */
+static int bluetooth_open (struct tty_struct *tty, struct file *filp);
+static void bluetooth_close (struct tty_struct *tty, struct file *filp);
+static int bluetooth_write (struct tty_struct *tty, const unsigned char *buf, int count);
+static int bluetooth_write_room (struct tty_struct *tty);
+static int bluetooth_chars_in_buffer (struct tty_struct *tty);
+static void bluetooth_throttle (struct tty_struct *tty);
+static void bluetooth_unthrottle (struct tty_struct *tty);
+static int bluetooth_ioctl (struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
+static void bluetooth_set_termios (struct tty_struct *tty, struct termios *old);
+
+static void bluetooth_int_callback (struct urb *urb, struct pt_regs *regs);
+static void bluetooth_ctrl_callback (struct urb *urb, struct pt_regs *regs);
+static void bluetooth_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
+static void bluetooth_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
+
+static int usb_bluetooth_probe (struct usb_interface *intf,
+ const struct usb_device_id *id);
+static void usb_bluetooth_disconnect (struct usb_interface *intf);
+
+
+static struct usb_device_id usb_bluetooth_ids [] = {
+ { USB_DEVICE_INFO(WIRELESS_CLASS_CODE, RF_SUBCLASS_CODE, BLUETOOTH_PROGRAMMING_PROTOCOL_CODE) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usb_bluetooth_ids);
+
+static struct usb_driver usb_bluetooth_driver = {
+ .owner = THIS_MODULE,
+ .name = "bluetty",
+ .probe = usb_bluetooth_probe,
+ .disconnect = usb_bluetooth_disconnect,
+ .id_table = usb_bluetooth_ids,
+};
+
+static struct tty_driver *bluetooth_tty_driver;
+static struct usb_bluetooth *bluetooth_table[BLUETOOTH_TTY_MINORS];
+
+
+static inline int bluetooth_paranoia_check (struct usb_bluetooth *bluetooth, const char *function)
+{
+ if (!bluetooth) {
+ dbg("%s - bluetooth == NULL", function);
+ return -1;
+ }
+ if (bluetooth->magic != USB_BLUETOOTH_MAGIC) {
+ dbg("%s - bad magic number for bluetooth", function);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static inline struct usb_bluetooth* get_usb_bluetooth (struct usb_bluetooth *bluetooth, const char *function)
+{
+ if (!bluetooth ||
+ bluetooth_paranoia_check (bluetooth, function)) {
+ /* then say that we don't have a valid usb_bluetooth thing, which will
+ * end up generating -ENODEV return values */
+ return NULL;
+ }
+
+ return bluetooth;
+}
+
+
+static inline struct usb_bluetooth *get_bluetooth_by_index (int index)
+{
+ return bluetooth_table[index];
+}
+
+
+static int bluetooth_ctrl_msg (struct usb_bluetooth *bluetooth, int request, int value, const unsigned char *buf, int len)
+{
+ struct urb *urb = NULL;
+ struct usb_ctrlrequest *dr = NULL;
+ int i;
+ int status;
+
+ dbg ("%s", __FUNCTION__);
+
+ /* try to find a free urb in our list */
+ for (i = 0; i < NUM_CONTROL_URBS; ++i) {
+ if (bluetooth->control_urb_pool[i]->status != -EINPROGRESS) {
+ urb = bluetooth->control_urb_pool[i];
+ dr = &bluetooth->dr[i];
+ break;
+ }
+ }
+ if (urb == NULL) {
+ dbg ("%s - no free urbs", __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ /* keep increasing the urb transfer buffer to fit the size of the message */
+ if (urb->transfer_buffer == NULL) {
+ urb->transfer_buffer = kmalloc (len, GFP_KERNEL);
+ if (urb->transfer_buffer == NULL) {
+ err ("%s - out of memory", __FUNCTION__);
+ return -ENOMEM;
+ }
+ }
+ if (urb->transfer_buffer_length < len) {
+ kfree (urb->transfer_buffer);
+ urb->transfer_buffer = kmalloc (len, GFP_KERNEL);
+ if (urb->transfer_buffer == NULL) {
+ err ("%s - out of memory", __FUNCTION__);
+ return -ENOMEM;
+ }
+ }
+ memcpy (urb->transfer_buffer, buf, len);
+
+ dr->bRequestType= BLUETOOTH_CONTROL_REQUEST_TYPE;
+ dr->bRequest = request;
+ dr->wValue = cpu_to_le16((u16) value);
+ dr->wIndex = cpu_to_le16((u16) bluetooth->control_out_bInterfaceNum);
+ dr->wLength = cpu_to_le16((u16) len);
+
+ usb_fill_control_urb (urb, bluetooth->dev, usb_sndctrlpipe(bluetooth->dev, 0),
+ (unsigned char*)dr, urb->transfer_buffer, len, bluetooth_ctrl_callback, bluetooth);
+
+ /* send it down the pipe */
+ status = usb_submit_urb(urb, GFP_KERNEL);
+ if (status)
+ dbg("%s - usb_submit_urb(control) failed with status = %d", __FUNCTION__, status);
+
+ return status;
+}
+
+
+
+
+
+/*****************************************************************************
+ * Driver tty interface functions
+ *****************************************************************************/
+static int bluetooth_open (struct tty_struct *tty, struct file * filp)
+{
+ struct usb_bluetooth *bluetooth;
+ int result;
+
+ dbg("%s", __FUNCTION__);
+
+ /* initialize the pointer incase something fails */
+ tty->driver_data = NULL;
+
+ /* get the bluetooth object associated with this tty pointer */
+ bluetooth = get_bluetooth_by_index (tty->index);
+
+ if (bluetooth_paranoia_check (bluetooth, __FUNCTION__)) {
+ return -ENODEV;
+ }
+
+ down (&bluetooth->lock);
+
+ ++bluetooth->open_count;
+ if (bluetooth->open_count == 1) {
+ /* set up our structure making the tty driver remember our object, and us it */
+ tty->driver_data = bluetooth;
+ bluetooth->tty = tty;
+
+ /* force low_latency on so that our tty_push actually forces the data through,
+ * otherwise it is scheduled, and with high data rates (like with OHCI) data
+ * can get lost. */
+ bluetooth->tty->low_latency = 1;
+
+ /* Reset the packet position counters */
+ bluetooth->int_packet_pos = 0;
+ bluetooth->bulk_packet_pos = 0;
+
+#ifndef BTBUGGYHARDWARE
+ /* Start reading from the device */
+ usb_fill_bulk_urb (bluetooth->read_urb, bluetooth->dev,
+ usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress),
+ bluetooth->bulk_in_buffer,
+ bluetooth->bulk_in_buffer_size,
+ bluetooth_read_bulk_callback, bluetooth);
+ result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL);
+ if (result)
+ dbg("%s - usb_submit_urb(read bulk) failed with status %d", __FUNCTION__, result);
+#endif
+ usb_fill_int_urb (bluetooth->interrupt_in_urb, bluetooth->dev,
+ usb_rcvintpipe(bluetooth->dev, bluetooth->interrupt_in_endpointAddress),
+ bluetooth->interrupt_in_buffer,
+ bluetooth->interrupt_in_buffer_size,
+ bluetooth_int_callback, bluetooth,
+ bluetooth->interrupt_in_interval);
+ result = usb_submit_urb(bluetooth->interrupt_in_urb, GFP_KERNEL);
+ if (result)
+ dbg("%s - usb_submit_urb(interrupt in) failed with status %d", __FUNCTION__, result);
+ }
+
+ up(&bluetooth->lock);
+
+ return 0;
+}
+
+
+static void bluetooth_close (struct tty_struct *tty, struct file * filp)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not opened", __FUNCTION__);
+ return;
+ }
+
+ down (&bluetooth->lock);
+
+ --bluetooth->open_count;
+ if (bluetooth->open_count <= 0) {
+ bluetooth->open_count = 0;
+
+ /* shutdown any in-flight urbs that we know about */
+ usb_kill_urb (bluetooth->read_urb);
+ usb_kill_urb (bluetooth->interrupt_in_urb);
+ }
+ up(&bluetooth->lock);
+}
+
+
+static int bluetooth_write (struct tty_struct * tty, const unsigned char *buf, int count)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+ struct urb *urb = NULL;
+ unsigned char *temp_buffer = NULL;
+ const unsigned char *current_buffer;
+ unsigned char *urb_buffer;
+ int i;
+ int retval = 0;
+
+ if (!bluetooth) {
+ return -ENODEV;
+ }
+
+ dbg("%s - %d byte(s)", __FUNCTION__, count);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not opened", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ if (count == 0) {
+ dbg("%s - write request of 0 bytes", __FUNCTION__);
+ return 0;
+ }
+ if (count == 1) {
+ dbg("%s - write request only included type %d", __FUNCTION__, buf[0]);
+ return 1;
+ }
+
+#ifdef DEBUG
+ printk (KERN_DEBUG __FILE__ ": %s - length = %d, data = ", __FUNCTION__, count);
+ for (i = 0; i < count; ++i) {
+ printk ("%.2x ", buf[i]);
+ }
+ printk ("\n");
+#endif
+
+ current_buffer = buf;
+
+ switch (*current_buffer) {
+ /* First byte indicates the type of packet */
+ case CMD_PKT:
+ /* dbg("%s- Send cmd_pkt len:%d", __FUNCTION__, count);*/
+
+ retval = bluetooth_ctrl_msg (bluetooth, 0x00, 0x00, ¤t_buffer[1], count-1);
+ if (retval) {
+ goto exit;
+ }
+ retval = count;
+ break;
+
+ case ACL_PKT:
+ ++current_buffer;
+ --count;
+
+ urb_buffer = kmalloc (count, GFP_ATOMIC);
+ if (!urb_buffer) {
+ dev_err(&bluetooth->dev->dev, "out of memory\n");
+ retval = -ENOMEM;
+ goto exit;
+ }
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb) {
+ dev_err(&bluetooth->dev->dev, "no more free urbs\n");
+ kfree(urb_buffer);
+ retval = -ENOMEM;
+ goto exit;
+ }
+ memcpy (urb_buffer, current_buffer, count);
+
+ /* build up our urb */
+ usb_fill_bulk_urb(urb, bluetooth->dev,
+ usb_sndbulkpipe(bluetooth->dev,
+ bluetooth->bulk_out_endpointAddress),
+ urb_buffer,
+ count,
+ bluetooth_write_bulk_callback,
+ bluetooth);
+
+
+ /* send it down the pipe */
+ retval = usb_submit_urb(urb, GFP_KERNEL);
+ if (retval) {
+ dbg("%s - usb_submit_urb(write bulk) failed with error = %d", __FUNCTION__, retval);
+ goto exit;
+ }
+
+ /* we are done with this urb, so let the host driver
+ * really free it when it is finished with it */
+ usb_free_urb (urb);
+ retval = count + 1;
+ break;
+
+ default :
+ dbg("%s - unsupported (at this time) write type", __FUNCTION__);
+ retval = -EINVAL;
+ break;
+ }
+
+exit:
+ kfree (temp_buffer);
+
+ return retval;
+}
+
+
+static int bluetooth_write_room (struct tty_struct *tty)
+{
+ dbg("%s", __FUNCTION__);
+
+ /*
+ * We really can take anything the user throws at us
+ * but let's pick a nice big number to tell the tty
+ * layer that we have lots of free space
+ */
+ return 2048;
+}
+
+
+static int bluetooth_chars_in_buffer (struct tty_struct *tty)
+{
+ dbg("%s", __FUNCTION__);
+
+ /*
+ * We can't really account for how much data we
+ * have sent out, but hasn't made it through to the
+ * device, so just tell the tty layer that everything
+ * is flushed.
+ */
+ return 0;
+}
+
+
+static void bluetooth_throttle (struct tty_struct * tty)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ dbg("%s unsupported (at this time)", __FUNCTION__);
+
+ return;
+}
+
+
+static void bluetooth_unthrottle (struct tty_struct * tty)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ dbg("%s unsupported (at this time)", __FUNCTION__);
+}
+
+
+static int bluetooth_ioctl (struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return -ENODEV;
+ }
+
+ dbg("%s - cmd 0x%.4x", __FUNCTION__, cmd);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return -ENODEV;
+ }
+
+ /* FIXME!!! */
+ return -ENOIOCTLCMD;
+}
+
+
+static void bluetooth_set_termios (struct tty_struct *tty, struct termios * old)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ /* FIXME!!! */
+
+ return;
+}
+
+
+#ifdef BTBUGGYHARDWARE
+void btusb_enable_bulk_read(struct tty_struct *tty){
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+ int result;
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ if (bluetooth->read_urb) {
+ usb_fill_bulk_urb(bluetooth->read_urb, bluetooth->dev,
+ usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress),
+ bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size,
+ bluetooth_read_bulk_callback, bluetooth);
+ result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL);
+ if (result)
+ err ("%s - failed submitting read urb, error %d", __FUNCTION__, result);
+ }
+}
+
+void btusb_disable_bulk_read(struct tty_struct *tty){
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)tty->driver_data, __FUNCTION__);
+
+ if (!bluetooth) {
+ return;
+ }
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth->open_count) {
+ dbg ("%s - device not open", __FUNCTION__);
+ return;
+ }
+
+ if ((bluetooth->read_urb) && (bluetooth->read_urb->actual_length))
+ usb_kill_urb(bluetooth->read_urb);
+}
+#endif
+
+
+/*****************************************************************************
+ * urb callback functions
+ *****************************************************************************/
+
+
+static void bluetooth_int_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__);
+ unsigned char *data = urb->transfer_buffer;
+ unsigned int i;
+ unsigned int count = urb->actual_length;
+ unsigned int packet_size;
+ int status;
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+ if (!count) {
+ dbg("%s - zero length int", __FUNCTION__);
+ goto exit;
+ }
+
+
+#ifdef DEBUG
+ if (count) {
+ printk (KERN_DEBUG __FILE__ ": %s- length = %d, data = ", __FUNCTION__, count);
+ for (i = 0; i < count; ++i) {
+ printk ("%.2x ", data[i]);
+ }
+ printk ("\n");
+ }
+#endif
+
+#ifdef BTBUGGYHARDWARE
+ if ((count >= 2) && (data[0] == 0xFF) && (data[1] == 0x00)) {
+ data += 2;
+ count -= 2;
+ }
+ if (count == 0) {
+ urb->actual_length = 0;
+ goto exit;
+ }
+#endif
+ /* We add a packet type identifier to the beginning of each
+ HCI frame. This makes the data in the tty look like a
+ serial USB devices. Each HCI frame can be broken across
+ multiple URBs so we buffer them until we have a full hci
+ packet */
+
+ if (!bluetooth->int_packet_pos) {
+ bluetooth->int_buffer[0] = EVENT_PKT;
+ bluetooth->int_packet_pos++;
+ }
+
+ if (bluetooth->int_packet_pos + count > EVENT_BUFFER_SIZE) {
+ err("%s - exceeded EVENT_BUFFER_SIZE", __FUNCTION__);
+ bluetooth->int_packet_pos = 0;
+ goto exit;
+ }
+
+ memcpy (&bluetooth->int_buffer[bluetooth->int_packet_pos],
+ urb->transfer_buffer, count);
+ bluetooth->int_packet_pos += count;
+ urb->actual_length = 0;
+
+ if (bluetooth->int_packet_pos >= EVENT_HDR_SIZE)
+ packet_size = bluetooth->int_buffer[2];
+ else
+ goto exit;
+
+ if (packet_size + EVENT_HDR_SIZE < bluetooth->int_packet_pos) {
+ err("%s - packet was too long", __FUNCTION__);
+ bluetooth->int_packet_pos = 0;
+ goto exit;
+ }
+
+ if (packet_size + EVENT_HDR_SIZE == bluetooth->int_packet_pos) {
+ for (i = 0; i < bluetooth->int_packet_pos; ++i) {
+ /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them */
+ if (bluetooth->tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(bluetooth->tty);
+ }
+ tty_insert_flip_char(bluetooth->tty, bluetooth->int_buffer[i], 0);
+ }
+ tty_flip_buffer_push(bluetooth->tty);
+
+ bluetooth->int_packet_pos = 0;
+ }
+
+exit:
+ status = usb_submit_urb (urb, GFP_ATOMIC);
+ if (status)
+ err ("%s - usb_submit_urb failed with result %d",
+ __FUNCTION__, status);
+}
+
+
+static void bluetooth_ctrl_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__);
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+}
+
+
+static void bluetooth_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__);
+ unsigned char *data = urb->transfer_buffer;
+ unsigned int count = urb->actual_length;
+ unsigned int i;
+ unsigned int packet_size;
+ int result;
+
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ if (urb->status == -ENOENT) {
+ dbg("%s - URB canceled, won't reschedule", __FUNCTION__);
+ return;
+ }
+ goto exit;
+ }
+
+ if (!count) {
+ dbg("%s - zero length read bulk", __FUNCTION__);
+ goto exit;
+ }
+
+#ifdef DEBUG
+ if (count) {
+ printk (KERN_DEBUG __FILE__ ": %s- length = %d, data = ", __FUNCTION__, count);
+ for (i = 0; i < count; ++i) {
+ printk ("%.2x ", data[i]);
+ }
+ printk ("\n");
+ }
+#endif
+#ifdef BTBUGGYHARDWARE
+ if ((count == 4) && (data[0] == 0x00) && (data[1] == 0x00)
+ && (data[2] == 0x00) && (data[3] == 0x00)) {
+ urb->actual_length = 0;
+ usb_fill_bulk_urb(bluetooth->read_urb, bluetooth->dev,
+ usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress),
+ bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size,
+ bluetooth_read_bulk_callback, bluetooth);
+ result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL);
+ if (result)
+ err ("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+
+ return;
+ }
+#endif
+ /* We add a packet type identifier to the beginning of each
+ HCI frame. This makes the data in the tty look like a
+ serial USB devices. Each HCI frame can be broken across
+ multiple URBs so we buffer them until we have a full hci
+ packet */
+
+ if (!bluetooth->bulk_packet_pos) {
+ bluetooth->bulk_buffer[0] = ACL_PKT;
+ bluetooth->bulk_packet_pos++;
+ }
+
+ if (bluetooth->bulk_packet_pos + count > ACL_BUFFER_SIZE) {
+ err("%s - exceeded ACL_BUFFER_SIZE", __FUNCTION__);
+ bluetooth->bulk_packet_pos = 0;
+ goto exit;
+ }
+
+ memcpy (&bluetooth->bulk_buffer[bluetooth->bulk_packet_pos],
+ urb->transfer_buffer, count);
+ bluetooth->bulk_packet_pos += count;
+ urb->actual_length = 0;
+
+ if (bluetooth->bulk_packet_pos >= ACL_HDR_SIZE) {
+ packet_size = CHAR2INT16(bluetooth->bulk_buffer[4],bluetooth->bulk_buffer[3]);
+ } else {
+ goto exit;
+ }
+
+ if (packet_size + ACL_HDR_SIZE < bluetooth->bulk_packet_pos) {
+ err("%s - packet was too long", __FUNCTION__);
+ bluetooth->bulk_packet_pos = 0;
+ goto exit;
+ }
+
+ if (packet_size + ACL_HDR_SIZE == bluetooth->bulk_packet_pos) {
+ for (i = 0; i < bluetooth->bulk_packet_pos; ++i) {
+ /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
+ if (bluetooth->tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(bluetooth->tty);
+ }
+ tty_insert_flip_char(bluetooth->tty, bluetooth->bulk_buffer[i], 0);
+ }
+ tty_flip_buffer_push(bluetooth->tty);
+ bluetooth->bulk_packet_pos = 0;
+ }
+
+exit:
+ if (!bluetooth || !bluetooth->open_count)
+ return;
+
+ usb_fill_bulk_urb(bluetooth->read_urb, bluetooth->dev,
+ usb_rcvbulkpipe(bluetooth->dev, bluetooth->bulk_in_endpointAddress),
+ bluetooth->bulk_in_buffer, bluetooth->bulk_in_buffer_size,
+ bluetooth_read_bulk_callback, bluetooth);
+ result = usb_submit_urb(bluetooth->read_urb, GFP_KERNEL);
+ if (result)
+ err ("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+
+ return;
+}
+
+
+static void bluetooth_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)urb->context, __FUNCTION__);
+
+ dbg("%s", __FUNCTION__);
+
+ /* free up the transfer buffer, as usb_free_urb() does not do this */
+ kfree(urb->transfer_buffer);
+
+ if (!bluetooth) {
+ dbg("%s - bad bluetooth pointer, exiting", __FUNCTION__);
+ return;
+ }
+
+ if (urb->status) {
+ dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+
+ /* wake up our little function to let the tty layer know that something happened */
+ schedule_work(&bluetooth->work);
+}
+
+
+static void bluetooth_softint(void *private)
+{
+ struct usb_bluetooth *bluetooth = get_usb_bluetooth ((struct usb_bluetooth *)private, __FUNCTION__);
+
+ dbg("%s", __FUNCTION__);
+
+ if (!bluetooth)
+ return;
+
+ tty_wakeup(bluetooth->tty);
+}
+
+
+static int usb_bluetooth_probe (struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev (intf);
+ struct usb_bluetooth *bluetooth = NULL;
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_endpoint_descriptor *interrupt_in_endpoint[8];
+ struct usb_endpoint_descriptor *bulk_in_endpoint[8];
+ struct usb_endpoint_descriptor *bulk_out_endpoint[8];
+ int control_out_endpoint;
+
+ int minor;
+ int buffer_size;
+ int i;
+ int num_interrupt_in = 0;
+ int num_bulk_in = 0;
+ int num_bulk_out = 0;
+
+ interface = intf->cur_altsetting;
+ control_out_endpoint = interface->desc.bInterfaceNumber;
+
+ /* find the endpoints that we need */
+ for (i = 0; i < interface->desc.bNumEndpoints; ++i) {
+ endpoint = &interface->endpoint[i].desc;
+
+ if ((endpoint->bEndpointAddress & 0x80) &&
+ ((endpoint->bmAttributes & 3) == 0x02)) {
+ /* we found a bulk in endpoint */
+ dbg("found bulk in");
+ bulk_in_endpoint[num_bulk_in] = endpoint;
+ ++num_bulk_in;
+ }
+
+ if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
+ ((endpoint->bmAttributes & 3) == 0x02)) {
+ /* we found a bulk out endpoint */
+ dbg("found bulk out");
+ bulk_out_endpoint[num_bulk_out] = endpoint;
+ ++num_bulk_out;
+ }
+
+ if ((endpoint->bEndpointAddress & 0x80) &&
+ ((endpoint->bmAttributes & 3) == 0x03)) {
+ /* we found a interrupt in endpoint */
+ dbg("found interrupt in");
+ interrupt_in_endpoint[num_interrupt_in] = endpoint;
+ ++num_interrupt_in;
+ }
+ }
+
+ /* according to the spec, we can only have 1 bulk_in, 1 bulk_out, and 1 interrupt_in endpoints */
+ if ((num_bulk_in != 1) ||
+ (num_bulk_out != 1) ||
+ (num_interrupt_in != 1)) {
+ dbg ("%s - improper number of endpoints. Bluetooth driver not bound.", __FUNCTION__);
+ return -EIO;
+ }
+
+ info("USB Bluetooth converter detected");
+
+ for (minor = 0; minor < BLUETOOTH_TTY_MINORS && bluetooth_table[minor]; ++minor)
+ ;
+ if (bluetooth_table[minor]) {
+ err("No more free Bluetooth devices");
+ return -ENODEV;
+ }
+
+ if (!(bluetooth = kmalloc(sizeof(struct usb_bluetooth), GFP_KERNEL))) {
+ err("Out of memory");
+ return -ENOMEM;
+ }
+
+ memset(bluetooth, 0, sizeof(struct usb_bluetooth));
+
+ bluetooth->magic = USB_BLUETOOTH_MAGIC;
+ bluetooth->dev = dev;
+ bluetooth->minor = minor;
+ INIT_WORK(&bluetooth->work, bluetooth_softint, bluetooth);
+ init_MUTEX(&bluetooth->lock);
+
+ /* record the interface number for the control out */
+ bluetooth->control_out_bInterfaceNum = control_out_endpoint;
+
+ /* create our control out urb pool */
+ for (i = 0; i < NUM_CONTROL_URBS; ++i) {
+ struct urb *urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (urb == NULL) {
+ err("No free urbs available");
+ goto probe_error;
+ }
+ urb->transfer_buffer = NULL;
+ bluetooth->control_urb_pool[i] = urb;
+ }
+
+ /* set up the endpoint information */
+ endpoint = bulk_in_endpoint[0];
+ bluetooth->read_urb = usb_alloc_urb (0, GFP_KERNEL);
+ if (!bluetooth->read_urb) {
+ err("No free urbs available");
+ goto probe_error;
+ }
+ bluetooth->bulk_in_buffer_size = buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ bluetooth->bulk_in_endpointAddress = endpoint->bEndpointAddress;
+ bluetooth->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
+ if (!bluetooth->bulk_in_buffer) {
+ err("Couldn't allocate bulk_in_buffer");
+ goto probe_error;
+ }
+ usb_fill_bulk_urb(bluetooth->read_urb, dev, usb_rcvbulkpipe(dev, endpoint->bEndpointAddress),
+ bluetooth->bulk_in_buffer, buffer_size, bluetooth_read_bulk_callback, bluetooth);
+
+ endpoint = bulk_out_endpoint[0];
+ bluetooth->bulk_out_endpointAddress = endpoint->bEndpointAddress;
+ bluetooth->bulk_out_buffer_size = le16_to_cpu(endpoint->wMaxPacketSize) * 2;
+
+ endpoint = interrupt_in_endpoint[0];
+ bluetooth->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!bluetooth->interrupt_in_urb) {
+ err("No free urbs available");
+ goto probe_error;
+ }
+ bluetooth->interrupt_in_buffer_size = buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ bluetooth->interrupt_in_endpointAddress = endpoint->bEndpointAddress;
+ bluetooth->interrupt_in_interval = endpoint->bInterval;
+ bluetooth->interrupt_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
+ if (!bluetooth->interrupt_in_buffer) {
+ err("Couldn't allocate interrupt_in_buffer");
+ goto probe_error;
+ }
+ usb_fill_int_urb(bluetooth->interrupt_in_urb, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress),
+ bluetooth->interrupt_in_buffer, buffer_size, bluetooth_int_callback,
+ bluetooth, endpoint->bInterval);
+
+ /* initialize the devfs nodes for this device and let the user know what bluetooths we are bound to */
+ tty_register_device (bluetooth_tty_driver, minor, &intf->dev);
+ info("Bluetooth converter now attached to ttyUB%d (or usb/ttub/%d for devfs)", minor, minor);
+
+ bluetooth_table[minor] = bluetooth;
+
+ /* success */
+ usb_set_intfdata (intf, bluetooth);
+ return 0;
+
+probe_error:
+ if (bluetooth->read_urb)
+ usb_free_urb (bluetooth->read_urb);
+ if (bluetooth->bulk_in_buffer)
+ kfree (bluetooth->bulk_in_buffer);
+ if (bluetooth->interrupt_in_urb)
+ usb_free_urb (bluetooth->interrupt_in_urb);
+ if (bluetooth->interrupt_in_buffer)
+ kfree (bluetooth->interrupt_in_buffer);
+ for (i = 0; i < NUM_CONTROL_URBS; ++i)
+ if (bluetooth->control_urb_pool[i]) {
+ if (bluetooth->control_urb_pool[i]->transfer_buffer)
+ kfree (bluetooth->control_urb_pool[i]->transfer_buffer);
+ usb_free_urb (bluetooth->control_urb_pool[i]);
+ }
+
+ bluetooth_table[minor] = NULL;
+
+ /* free up any memory that we allocated */
+ kfree (bluetooth);
+ return -EIO;
+}
+
+
+static void usb_bluetooth_disconnect(struct usb_interface *intf)
+{
+ struct usb_bluetooth *bluetooth = usb_get_intfdata (intf);
+ int i;
+
+ usb_set_intfdata (intf, NULL);
+ if (bluetooth) {
+ if ((bluetooth->open_count) && (bluetooth->tty))
+ tty_hangup(bluetooth->tty);
+
+ bluetooth->open_count = 0;
+
+ if (bluetooth->read_urb) {
+ usb_kill_urb (bluetooth->read_urb);
+ usb_free_urb (bluetooth->read_urb);
+ }
+ if (bluetooth->bulk_in_buffer)
+ kfree (bluetooth->bulk_in_buffer);
+
+ if (bluetooth->interrupt_in_urb) {
+ usb_kill_urb (bluetooth->interrupt_in_urb);
+ usb_free_urb (bluetooth->interrupt_in_urb);
+ }
+ if (bluetooth->interrupt_in_buffer)
+ kfree (bluetooth->interrupt_in_buffer);
+
+ tty_unregister_device (bluetooth_tty_driver, bluetooth->minor);
+
+ for (i = 0; i < NUM_CONTROL_URBS; ++i) {
+ if (bluetooth->control_urb_pool[i]) {
+ usb_kill_urb (bluetooth->control_urb_pool[i]);
+ if (bluetooth->control_urb_pool[i]->transfer_buffer)
+ kfree (bluetooth->control_urb_pool[i]->transfer_buffer);
+ usb_free_urb (bluetooth->control_urb_pool[i]);
+ }
+ }
+
+ info("Bluetooth converter now disconnected from ttyUB%d", bluetooth->minor);
+
+ bluetooth_table[bluetooth->minor] = NULL;
+
+ /* free up any memory that we allocated */
+ kfree (bluetooth);
+ } else {
+ info("device disconnected");
+ }
+}
+
+static struct tty_operations bluetooth_ops = {
+ .open = bluetooth_open,
+ .close = bluetooth_close,
+ .write = bluetooth_write,
+ .write_room = bluetooth_write_room,
+ .ioctl = bluetooth_ioctl,
+ .set_termios = bluetooth_set_termios,
+ .throttle = bluetooth_throttle,
+ .unthrottle = bluetooth_unthrottle,
+ .chars_in_buffer = bluetooth_chars_in_buffer,
+};
+
+static int usb_bluetooth_init(void)
+{
+ int i;
+ int result;
+
+ /* Initialize our global data */
+ for (i = 0; i < BLUETOOTH_TTY_MINORS; ++i) {
+ bluetooth_table[i] = NULL;
+ }
+
+ info ("USB Bluetooth support registered");
+
+ bluetooth_tty_driver = alloc_tty_driver(BLUETOOTH_TTY_MINORS);
+ if (!bluetooth_tty_driver)
+ return -ENOMEM;
+
+ bluetooth_tty_driver->owner = THIS_MODULE;
+ bluetooth_tty_driver->driver_name = "usb-bluetooth";
+ bluetooth_tty_driver->name = "ttyUB";
+ bluetooth_tty_driver->devfs_name = "usb/ttub/";
+ bluetooth_tty_driver->major = BLUETOOTH_TTY_MAJOR;
+ bluetooth_tty_driver->minor_start = 0;
+ bluetooth_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ bluetooth_tty_driver->subtype = SERIAL_TYPE_NORMAL;
+ bluetooth_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ bluetooth_tty_driver->init_termios = tty_std_termios;
+ bluetooth_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ tty_set_operations(bluetooth_tty_driver, &bluetooth_ops);
+ if (tty_register_driver (bluetooth_tty_driver)) {
+ err("%s - failed to register tty driver", __FUNCTION__);
+ put_tty_driver(bluetooth_tty_driver);
+ return -1;
+ }
+
+ /* register the USB driver */
+ result = usb_register(&usb_bluetooth_driver);
+ if (result < 0) {
+ tty_unregister_driver(bluetooth_tty_driver);
+ put_tty_driver(bluetooth_tty_driver);
+ err("usb_register failed for the USB bluetooth driver. Error number %d", result);
+ return -1;
+ }
+
+ info(DRIVER_DESC " " DRIVER_VERSION);
+
+ return 0;
+}
+
+
+static void usb_bluetooth_exit(void)
+{
+ usb_deregister(&usb_bluetooth_driver);
+ tty_unregister_driver(bluetooth_tty_driver);
+ put_tty_driver(bluetooth_tty_driver);
+}
+
+
+module_init(usb_bluetooth_init);
+module_exit(usb_bluetooth_exit);
+
+/* Module information */
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
new file mode 100644
index 0000000..6d1f9b6
--- /dev/null
+++ b/drivers/usb/class/cdc-acm.c
@@ -0,0 +1,942 @@
+/*
+ * cdc-acm.c
+ *
+ * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de>
+ * Copyright (c) 1999 Pavel Machek <pavel@suse.cz>
+ * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com>
+ * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz>
+ * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name>
+ *
+ * USB Abstract Control Model driver for USB modems and ISDN adapters
+ *
+ * Sponsored by SuSE
+ *
+ * ChangeLog:
+ * v0.9 - thorough cleaning, URBification, almost a rewrite
+ * v0.10 - some more cleanups
+ * v0.11 - fixed flow control, read error doesn't stop reads
+ * v0.12 - added TIOCM ioctls, added break handling, made struct acm kmalloced
+ * v0.13 - added termios, added hangup
+ * v0.14 - sized down struct acm
+ * v0.15 - fixed flow control again - characters could be lost
+ * v0.16 - added code for modems with swapped data and control interfaces
+ * v0.17 - added new style probing
+ * v0.18 - fixed new style probing for devices with more configurations
+ * v0.19 - fixed CLOCAL handling (thanks to Richard Shih-Ping Chan)
+ * v0.20 - switched to probing on interface (rather than device) class
+ * v0.21 - revert to probing on device for devices with multiple configs
+ * v0.22 - probe only the control interface. if usbcore doesn't choose the
+ * config we want, sysadmin changes bConfigurationValue in sysfs.
+ * v0.23 - use softirq for rx processing, as needed by tty layer
+ * v0.24 - change probe method to evaluate CDC union descriptor
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/smp_lock.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb_cdc.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+
+#include "cdc-acm.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.23"
+#define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik"
+#define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
+
+static struct usb_driver acm_driver;
+static struct tty_driver *acm_tty_driver;
+static struct acm *acm_table[ACM_TTY_MINORS];
+
+static DECLARE_MUTEX(open_sem);
+
+#define ACM_READY(acm) (acm && acm->dev && acm->used)
+
+/*
+ * Functions for ACM control messages.
+ */
+
+static int acm_ctrl_msg(struct acm *acm, int request, int value, void *buf, int len)
+{
+ int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
+ request, USB_RT_ACM, value,
+ acm->control->altsetting[0].desc.bInterfaceNumber,
+ buf, len, 5000);
+ dbg("acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d", request, value, len, retval);
+ return retval < 0 ? retval : 0;
+}
+
+/* devices aren't required to support these requests.
+ * the cdc acm descriptor tells whether they do...
+ */
+#define acm_set_control(acm, control) \
+ acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
+#define acm_set_line(acm, line) \
+ acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
+#define acm_send_break(acm, ms) \
+ acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
+
+/*
+ * Interrupt handlers for various ACM device responses
+ */
+
+/* control interface reports status changes with "interrupt" transfers */
+static void acm_ctrl_irq(struct urb *urb, struct pt_regs *regs)
+{
+ struct acm *acm = urb->context;
+ struct usb_cdc_notification *dr = urb->transfer_buffer;
+ unsigned char *data;
+ int newctrl;
+ int status;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+ if (!ACM_READY(acm))
+ goto exit;
+
+ data = (unsigned char *)(dr + 1);
+ switch (dr->bNotificationType) {
+
+ case USB_CDC_NOTIFY_NETWORK_CONNECTION:
+
+ dbg("%s network", dr->wValue ? "connected to" : "disconnected from");
+ break;
+
+ case USB_CDC_NOTIFY_SERIAL_STATE:
+
+ newctrl = le16_to_cpu(get_unaligned((__le16 *) data));
+
+ if (acm->tty && !acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
+ dbg("calling hangup");
+ tty_hangup(acm->tty);
+ }
+
+ acm->ctrlin = newctrl;
+
+ dbg("input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c",
+ acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', acm->ctrlin & ACM_CTRL_DSR ? '+' : '-',
+ acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', acm->ctrlin & ACM_CTRL_RI ? '+' : '-',
+ acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
+ acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
+
+ break;
+
+ default:
+ dbg("unknown notification %d received: index %d len %d data0 %d data1 %d",
+ dr->bNotificationType, dr->wIndex,
+ dr->wLength, data[0], data[1]);
+ break;
+ }
+exit:
+ status = usb_submit_urb (urb, GFP_ATOMIC);
+ if (status)
+ err ("%s - usb_submit_urb failed with result %d",
+ __FUNCTION__, status);
+}
+
+/* data interface returns incoming bytes, or we got unthrottled */
+static void acm_read_bulk(struct urb *urb, struct pt_regs *regs)
+{
+ struct acm *acm = urb->context;
+ dbg("Entering acm_read_bulk with status %d\n", urb->status);
+
+ if (!ACM_READY(acm))
+ return;
+
+ if (urb->status)
+ dev_dbg(&acm->data->dev, "bulk rx status %d\n", urb->status);
+
+ /* calling tty_flip_buffer_push() in_irq() isn't allowed */
+ tasklet_schedule(&acm->bh);
+}
+
+static void acm_rx_tasklet(unsigned long _acm)
+{
+ struct acm *acm = (void *)_acm;
+ struct urb *urb = acm->readurb;
+ struct tty_struct *tty = acm->tty;
+ unsigned char *data = urb->transfer_buffer;
+ int i = 0;
+ dbg("Entering acm_rx_tasklet");
+
+ if (urb->actual_length > 0 && !acm->throttle) {
+ for (i = 0; i < urb->actual_length && !acm->throttle; i++) {
+ /* if we insert more than TTY_FLIPBUF_SIZE characters,
+ * we drop them. */
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(tty);
+ }
+ tty_insert_flip_char(tty, data[i], 0);
+ }
+ dbg("Handed %d bytes to tty layer", i+1);
+ tty_flip_buffer_push(tty);
+ }
+
+ spin_lock(&acm->throttle_lock);
+ if (acm->throttle) {
+ dbg("Throtteling noticed");
+ memmove(data, data + i, urb->actual_length - i);
+ urb->actual_length -= i;
+ acm->resubmit_to_unthrottle = 1;
+ spin_unlock(&acm->throttle_lock);
+ return;
+ }
+ spin_unlock(&acm->throttle_lock);
+
+ urb->actual_length = 0;
+ urb->dev = acm->dev;
+
+ i = usb_submit_urb(urb, GFP_ATOMIC);
+ if (i)
+ dev_dbg(&acm->data->dev, "bulk rx resubmit %d\n", i);
+}
+
+/* data interface wrote those outgoing bytes */
+static void acm_write_bulk(struct urb *urb, struct pt_regs *regs)
+{
+ struct acm *acm = (struct acm *)urb->context;
+ dbg("Entering acm_write_bulk with status %d\n", urb->status);
+
+ if (!ACM_READY(acm))
+ goto out;
+
+ if (urb->status)
+ dbg("nonzero write bulk status received: %d", urb->status);
+
+ schedule_work(&acm->work);
+out:
+ acm->ready_for_write = 1;
+}
+
+static void acm_softint(void *private)
+{
+ struct acm *acm = private;
+ dbg("Entering acm_softint.\n");
+
+ if (!ACM_READY(acm))
+ return;
+ tty_wakeup(acm->tty);
+}
+
+/*
+ * TTY handlers
+ */
+
+static int acm_tty_open(struct tty_struct *tty, struct file *filp)
+{
+ struct acm *acm;
+ int rv = -EINVAL;
+ dbg("Entering acm_tty_open.\n");
+
+ down(&open_sem);
+
+ acm = acm_table[tty->index];
+ if (!acm || !acm->dev)
+ goto err_out;
+ else
+ rv = 0;
+
+ tty->driver_data = acm;
+ acm->tty = tty;
+
+
+
+ if (acm->used++) {
+ goto done;
+ }
+
+ acm->ctrlurb->dev = acm->dev;
+ if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
+ dbg("usb_submit_urb(ctrl irq) failed");
+ goto bail_out;
+ }
+
+ acm->readurb->dev = acm->dev;
+ if (usb_submit_urb(acm->readurb, GFP_KERNEL)) {
+ dbg("usb_submit_urb(read bulk) failed");
+ goto bail_out_and_unlink;
+ }
+
+ if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS))
+ goto full_bailout;
+
+ /* force low_latency on so that our tty_push actually forces the data through,
+ otherwise it is scheduled, and with high data rates data can get lost. */
+ tty->low_latency = 1;
+
+done:
+err_out:
+ up(&open_sem);
+ return rv;
+
+full_bailout:
+ usb_kill_urb(acm->readurb);
+bail_out_and_unlink:
+ usb_kill_urb(acm->ctrlurb);
+bail_out:
+ acm->used--;
+ up(&open_sem);
+ return -EIO;
+}
+
+static void acm_tty_close(struct tty_struct *tty, struct file *filp)
+{
+ struct acm *acm = tty->driver_data;
+
+ if (!acm || !acm->used)
+ return;
+
+ down(&open_sem);
+ if (!--acm->used) {
+ if (acm->dev) {
+ acm_set_control(acm, acm->ctrlout = 0);
+ usb_kill_urb(acm->ctrlurb);
+ usb_kill_urb(acm->writeurb);
+ usb_kill_urb(acm->readurb);
+ } else {
+ tty_unregister_device(acm_tty_driver, acm->minor);
+ acm_table[acm->minor] = NULL;
+ usb_free_urb(acm->ctrlurb);
+ usb_free_urb(acm->readurb);
+ usb_free_urb(acm->writeurb);
+ kfree(acm);
+ }
+ }
+ up(&open_sem);
+}
+
+static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
+{
+ struct acm *acm = tty->driver_data;
+ int stat;
+ dbg("Entering acm_tty_write to write %d bytes,\n", count);
+
+ if (!ACM_READY(acm))
+ return -EINVAL;
+ if (!acm->ready_for_write)
+ return 0;
+ if (!count)
+ return 0;
+
+ count = (count > acm->writesize) ? acm->writesize : count;
+
+ dbg("Get %d bytes...", count);
+ memcpy(acm->write_buffer, buf, count);
+ dbg(" Successfully copied.\n");
+
+ acm->writeurb->transfer_buffer_length = count;
+ acm->writeurb->dev = acm->dev;
+
+ acm->ready_for_write = 0;
+ stat = usb_submit_urb(acm->writeurb, GFP_ATOMIC);
+ if (stat < 0) {
+ dbg("usb_submit_urb(write bulk) failed");
+ acm->ready_for_write = 1;
+ return stat;
+ }
+
+ return count;
+}
+
+static int acm_tty_write_room(struct tty_struct *tty)
+{
+ struct acm *acm = tty->driver_data;
+ if (!ACM_READY(acm))
+ return -EINVAL;
+ return !acm->ready_for_write ? 0 : acm->writesize;
+}
+
+static int acm_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ struct acm *acm = tty->driver_data;
+ if (!ACM_READY(acm))
+ return -EINVAL;
+ return !acm->ready_for_write ? acm->writeurb->transfer_buffer_length : 0;
+}
+
+static void acm_tty_throttle(struct tty_struct *tty)
+{
+ struct acm *acm = tty->driver_data;
+ if (!ACM_READY(acm))
+ return;
+ spin_lock_bh(&acm->throttle_lock);
+ acm->throttle = 1;
+ spin_unlock_bh(&acm->throttle_lock);
+}
+
+static void acm_tty_unthrottle(struct tty_struct *tty)
+{
+ struct acm *acm = tty->driver_data;
+ if (!ACM_READY(acm))
+ return;
+ spin_lock_bh(&acm->throttle_lock);
+ acm->throttle = 0;
+ spin_unlock_bh(&acm->throttle_lock);
+ if (acm->resubmit_to_unthrottle) {
+ acm->resubmit_to_unthrottle = 0;
+ acm_read_bulk(acm->readurb, NULL);
+ }
+}
+
+static void acm_tty_break_ctl(struct tty_struct *tty, int state)
+{
+ struct acm *acm = tty->driver_data;
+ if (!ACM_READY(acm))
+ return;
+ if (acm_send_break(acm, state ? 0xffff : 0))
+ dbg("send break failed");
+}
+
+static int acm_tty_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct acm *acm = tty->driver_data;
+
+ if (!ACM_READY(acm))
+ return -EINVAL;
+
+ return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
+ (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
+ (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
+ (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
+ (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
+ TIOCM_CTS;
+}
+
+static int acm_tty_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ struct acm *acm = tty->driver_data;
+ unsigned int newctrl;
+
+ if (!ACM_READY(acm))
+ return -EINVAL;
+
+ newctrl = acm->ctrlout;
+ set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
+ clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
+
+ newctrl = (newctrl & ~clear) | set;
+
+ if (acm->ctrlout == newctrl)
+ return 0;
+ return acm_set_control(acm, acm->ctrlout = newctrl);
+}
+
+static int acm_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct acm *acm = tty->driver_data;
+
+ if (!ACM_READY(acm))
+ return -EINVAL;
+
+ return -ENOIOCTLCMD;
+}
+
+static __u32 acm_tty_speed[] = {
+ 0, 50, 75, 110, 134, 150, 200, 300, 600,
+ 1200, 1800, 2400, 4800, 9600, 19200, 38400,
+ 57600, 115200, 230400, 460800, 500000, 576000,
+ 921600, 1000000, 1152000, 1500000, 2000000,
+ 2500000, 3000000, 3500000, 4000000
+};
+
+static __u8 acm_tty_size[] = {
+ 5, 6, 7, 8
+};
+
+static void acm_tty_set_termios(struct tty_struct *tty, struct termios *termios_old)
+{
+ struct acm *acm = tty->driver_data;
+ struct termios *termios = tty->termios;
+ struct usb_cdc_line_coding newline;
+ int newctrl = acm->ctrlout;
+
+ if (!ACM_READY(acm))
+ return;
+
+ newline.dwDTERate = cpu_to_le32p(acm_tty_speed +
+ (termios->c_cflag & CBAUD & ~CBAUDEX) + (termios->c_cflag & CBAUDEX ? 15 : 0));
+ newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
+ newline.bParityType = termios->c_cflag & PARENB ?
+ (termios->c_cflag & PARODD ? 1 : 2) + (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
+ newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4];
+
+ acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
+
+ if (!newline.dwDTERate) {
+ newline.dwDTERate = acm->line.dwDTERate;
+ newctrl &= ~ACM_CTRL_DTR;
+ } else newctrl |= ACM_CTRL_DTR;
+
+ if (newctrl != acm->ctrlout)
+ acm_set_control(acm, acm->ctrlout = newctrl);
+
+ if (memcmp(&acm->line, &newline, sizeof newline)) {
+ memcpy(&acm->line, &newline, sizeof newline);
+ dbg("set line: %d %d %d %d", le32_to_cpu(newline.dwDTERate),
+ newline.bCharFormat, newline.bParityType,
+ newline.bDataBits);
+ acm_set_line(acm, &acm->line);
+ }
+}
+
+/*
+ * USB probe and disconnect routines.
+ */
+
+static int acm_probe (struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_cdc_union_desc *union_header = NULL;
+ char *buffer = intf->altsetting->extra;
+ int buflen = intf->altsetting->extralen;
+ struct usb_interface *control_interface;
+ struct usb_interface *data_interface;
+ struct usb_endpoint_descriptor *epctrl;
+ struct usb_endpoint_descriptor *epread;
+ struct usb_endpoint_descriptor *epwrite;
+ struct usb_device *usb_dev = interface_to_usbdev(intf);
+ struct acm *acm;
+ int minor;
+ int ctrlsize,readsize;
+ u8 *buf;
+ u8 ac_management_function = 0;
+ u8 call_management_function = 0;
+ int call_interface_num = -1;
+ int data_interface_num;
+ unsigned long quirks;
+
+ /* handle quirks deadly to normal probing*/
+ quirks = (unsigned long)id->driver_info;
+ if (quirks == NO_UNION_NORMAL) {
+ data_interface = usb_ifnum_to_if(usb_dev, 1);
+ control_interface = usb_ifnum_to_if(usb_dev, 0);
+ goto skip_normal_probe;
+ }
+
+ /* normal probing*/
+ if (!buffer) {
+ err("Wierd descriptor references\n");
+ return -EINVAL;
+ }
+
+ if (!buflen) {
+ if (intf->cur_altsetting->endpoint->extralen && intf->cur_altsetting->endpoint->extra) {
+ dev_dbg(&intf->dev,"Seeking extra descriptors on endpoint\n");
+ buflen = intf->cur_altsetting->endpoint->extralen;
+ buffer = intf->cur_altsetting->endpoint->extra;
+ } else {
+ err("Zero length descriptor references\n");
+ return -EINVAL;
+ }
+ }
+
+ while (buflen > 0) {
+ if (buffer [1] != USB_DT_CS_INTERFACE) {
+ err("skipping garbage\n");
+ goto next_desc;
+ }
+
+ switch (buffer [2]) {
+ case USB_CDC_UNION_TYPE: /* we've found it */
+ if (union_header) {
+ err("More than one union descriptor, skipping ...");
+ goto next_desc;
+ }
+ union_header = (struct usb_cdc_union_desc *)
+ buffer;
+ break;
+ case USB_CDC_COUNTRY_TYPE: /* maybe somehow export */
+ break; /* for now we ignore it */
+ case USB_CDC_HEADER_TYPE: /* maybe check version */
+ break; /* for now we ignore it */
+ case USB_CDC_ACM_TYPE:
+ ac_management_function = buffer[3];
+ break;
+ case USB_CDC_CALL_MANAGEMENT_TYPE:
+ call_management_function = buffer[3];
+ call_interface_num = buffer[4];
+ if ((call_management_function & 3) != 3)
+ err("This device cannot do calls on its own. It is no modem.");
+ break;
+
+ default:
+ err("Ignoring extra header, type %d, length %d", buffer[2], buffer[0]);
+ break;
+ }
+next_desc:
+ buflen -= buffer[0];
+ buffer += buffer[0];
+ }
+
+ if (!union_header) {
+ if (call_interface_num > 0) {
+ dev_dbg(&intf->dev,"No union descriptor, using call management descriptor\n");
+ data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
+ control_interface = intf;
+ } else {
+ dev_dbg(&intf->dev,"No union descriptor, giving up\n");
+ return -ENODEV;
+ }
+ } else {
+ control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
+ data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
+ if (!control_interface || !data_interface) {
+ dev_dbg(&intf->dev,"no interfaces\n");
+ return -ENODEV;
+ }
+ }
+
+ if (data_interface_num != call_interface_num)
+ dev_dbg(&intf->dev,"Seperate call control interface. That is not fully supported.\n");
+
+skip_normal_probe:
+
+ /*workaround for switched interfaces */
+ if (data_interface->cur_altsetting->desc.bInterfaceClass != CDC_DATA_INTERFACE_TYPE) {
+ if (control_interface->cur_altsetting->desc.bInterfaceClass == CDC_DATA_INTERFACE_TYPE) {
+ struct usb_interface *t;
+ dev_dbg(&intf->dev,"Your device has switched interfaces.\n");
+
+ t = control_interface;
+ control_interface = data_interface;
+ data_interface = t;
+ } else {
+ return -EINVAL;
+ }
+ }
+
+ if (usb_interface_claimed(data_interface)) { /* valid in this context */
+ dev_dbg(&intf->dev,"The data interface isn't available\n");
+ return -EBUSY;
+ }
+
+
+ if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
+ return -EINVAL;
+
+ epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
+ epread = &data_interface->cur_altsetting->endpoint[0].desc;
+ epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
+
+
+ /* workaround for switched endpoints */
+ if ((epread->bEndpointAddress & USB_DIR_IN) != USB_DIR_IN) {
+ /* descriptors are swapped */
+ struct usb_endpoint_descriptor *t;
+ dev_dbg(&intf->dev,"The data interface has switched endpoints\n");
+
+ t = epread;
+ epread = epwrite;
+ epwrite = t;
+ }
+ dbg("interfaces are valid");
+ for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
+
+ if (minor == ACM_TTY_MINORS) {
+ err("no more free acm devices");
+ return -ENODEV;
+ }
+
+ if (!(acm = kmalloc(sizeof(struct acm), GFP_KERNEL))) {
+ dev_dbg(&intf->dev, "out of memory (acm kmalloc)\n");
+ goto alloc_fail;
+ }
+ memset(acm, 0, sizeof(struct acm));
+
+ ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
+ readsize = le16_to_cpu(epread->wMaxPacketSize);
+ acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize);
+ acm->control = control_interface;
+ acm->data = data_interface;
+ acm->minor = minor;
+ acm->dev = usb_dev;
+ acm->ctrl_caps = ac_management_function;
+ acm->ctrlsize = ctrlsize;
+ acm->readsize = readsize;
+ acm->bh.func = acm_rx_tasklet;
+ acm->bh.data = (unsigned long) acm;
+ INIT_WORK(&acm->work, acm_softint, acm);
+ spin_lock_init(&acm->throttle_lock);
+ acm->ready_for_write = 1;
+
+ buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
+ if (!buf) {
+ dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)\n");
+ goto alloc_fail2;
+ }
+ acm->ctrl_buffer = buf;
+
+ buf = usb_buffer_alloc(usb_dev, readsize, GFP_KERNEL, &acm->read_dma);
+ if (!buf) {
+ dev_dbg(&intf->dev, "out of memory (read buffer alloc)\n");
+ goto alloc_fail3;
+ }
+ acm->read_buffer = buf;
+
+ buf = usb_buffer_alloc(usb_dev, acm->writesize, GFP_KERNEL, &acm->write_dma);
+ if (!buf) {
+ dev_dbg(&intf->dev, "out of memory (write buffer alloc)\n");
+ goto alloc_fail4;
+ }
+ acm->write_buffer = buf;
+
+ acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!acm->ctrlurb) {
+ dev_dbg(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
+ goto alloc_fail5;
+ }
+ acm->readurb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!acm->readurb) {
+ dev_dbg(&intf->dev, "out of memory (readurb kmalloc)\n");
+ goto alloc_fail6;
+ }
+ acm->writeurb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!acm->writeurb) {
+ dev_dbg(&intf->dev, "out of memory (writeurb kmalloc)\n");
+ goto alloc_fail7;
+ }
+
+ usb_fill_int_urb(acm->ctrlurb, usb_dev, usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
+ acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, epctrl->bInterval);
+ acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ acm->ctrlurb->transfer_dma = acm->ctrl_dma;
+
+ usb_fill_bulk_urb(acm->readurb, usb_dev, usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress),
+ acm->read_buffer, readsize, acm_read_bulk, acm);
+ acm->readurb->transfer_flags |= URB_NO_FSBR | URB_NO_TRANSFER_DMA_MAP;
+ acm->readurb->transfer_dma = acm->read_dma;
+
+ usb_fill_bulk_urb(acm->writeurb, usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
+ acm->write_buffer, acm->writesize, acm_write_bulk, acm);
+ acm->writeurb->transfer_flags |= URB_NO_FSBR | URB_NO_TRANSFER_DMA_MAP;
+ acm->writeurb->transfer_dma = acm->write_dma;
+
+ dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
+
+ acm_set_control(acm, acm->ctrlout);
+
+ acm->line.dwDTERate = cpu_to_le32(9600);
+ acm->line.bDataBits = 8;
+ acm_set_line(acm, &acm->line);
+
+ usb_driver_claim_interface(&acm_driver, data_interface, acm);
+
+ tty_register_device(acm_tty_driver, minor, &intf->dev);
+
+ acm_table[minor] = acm;
+ usb_set_intfdata (intf, acm);
+ return 0;
+
+alloc_fail7:
+ usb_free_urb(acm->readurb);
+alloc_fail6:
+ usb_free_urb(acm->ctrlurb);
+alloc_fail5:
+ usb_buffer_free(usb_dev, acm->writesize, acm->write_buffer, acm->write_dma);
+alloc_fail4:
+ usb_buffer_free(usb_dev, readsize, acm->read_buffer, acm->read_dma);
+alloc_fail3:
+ usb_buffer_free(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
+alloc_fail2:
+ kfree(acm);
+alloc_fail:
+ return -ENOMEM;
+}
+
+static void acm_disconnect(struct usb_interface *intf)
+{
+ struct acm *acm = usb_get_intfdata (intf);
+ struct usb_device *usb_dev = interface_to_usbdev(intf);
+
+ if (!acm || !acm->dev) {
+ dbg("disconnect on nonexisting interface");
+ return;
+ }
+
+ down(&open_sem);
+ acm->dev = NULL;
+ usb_set_intfdata (intf, NULL);
+
+ usb_kill_urb(acm->ctrlurb);
+ usb_kill_urb(acm->readurb);
+ usb_kill_urb(acm->writeurb);
+
+ flush_scheduled_work(); /* wait for acm_softint */
+
+ usb_buffer_free(usb_dev, acm->writesize, acm->write_buffer, acm->write_dma);
+ usb_buffer_free(usb_dev, acm->readsize, acm->read_buffer, acm->read_dma);
+ usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
+
+ usb_driver_release_interface(&acm_driver, acm->data);
+
+ if (!acm->used) {
+ tty_unregister_device(acm_tty_driver, acm->minor);
+ acm_table[acm->minor] = NULL;
+ usb_free_urb(acm->ctrlurb);
+ usb_free_urb(acm->readurb);
+ usb_free_urb(acm->writeurb);
+ kfree(acm);
+ up(&open_sem);
+ return;
+ }
+
+ up(&open_sem);
+
+ if (acm->tty)
+ tty_hangup(acm->tty);
+}
+
+/*
+ * USB driver structure.
+ */
+
+static struct usb_device_id acm_ids[] = {
+ /* quirky and broken devices */
+ { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
+ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
+ },
+ /* control interfaces with various AT-command sets */
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_V25TER) },
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_PCCA101) },
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_GSM) },
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_3G ) },
+ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+ USB_CDC_ACM_PROTO_AT_CDMA) },
+
+ /* NOTE: COMM/ACM/0xff is likely MSFT RNDIS ... NOT a modem!! */
+ { }
+};
+
+MODULE_DEVICE_TABLE (usb, acm_ids);
+
+static struct usb_driver acm_driver = {
+ .owner = THIS_MODULE,
+ .name = "cdc_acm",
+ .probe = acm_probe,
+ .disconnect = acm_disconnect,
+ .id_table = acm_ids,
+};
+
+/*
+ * TTY driver structures.
+ */
+
+static struct tty_operations acm_ops = {
+ .open = acm_tty_open,
+ .close = acm_tty_close,
+ .write = acm_tty_write,
+ .write_room = acm_tty_write_room,
+ .ioctl = acm_tty_ioctl,
+ .throttle = acm_tty_throttle,
+ .unthrottle = acm_tty_unthrottle,
+ .chars_in_buffer = acm_tty_chars_in_buffer,
+ .break_ctl = acm_tty_break_ctl,
+ .set_termios = acm_tty_set_termios,
+ .tiocmget = acm_tty_tiocmget,
+ .tiocmset = acm_tty_tiocmset,
+};
+
+/*
+ * Init / exit.
+ */
+
+static int __init acm_init(void)
+{
+ int retval;
+ acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
+ if (!acm_tty_driver)
+ return -ENOMEM;
+ acm_tty_driver->owner = THIS_MODULE,
+ acm_tty_driver->driver_name = "acm",
+ acm_tty_driver->name = "ttyACM",
+ acm_tty_driver->devfs_name = "usb/acm/",
+ acm_tty_driver->major = ACM_TTY_MAJOR,
+ acm_tty_driver->minor_start = 0,
+ acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
+ acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
+ acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS,
+ acm_tty_driver->init_termios = tty_std_termios;
+ acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ tty_set_operations(acm_tty_driver, &acm_ops);
+
+ retval = tty_register_driver(acm_tty_driver);
+ if (retval) {
+ put_tty_driver(acm_tty_driver);
+ return retval;
+ }
+
+ retval = usb_register(&acm_driver);
+ if (retval) {
+ tty_unregister_driver(acm_tty_driver);
+ put_tty_driver(acm_tty_driver);
+ return retval;
+ }
+
+ info(DRIVER_VERSION ":" DRIVER_DESC);
+
+ return 0;
+}
+
+static void __exit acm_exit(void)
+{
+ usb_deregister(&acm_driver);
+ tty_unregister_driver(acm_tty_driver);
+ put_tty_driver(acm_tty_driver);
+}
+
+module_init(acm_init);
+module_exit(acm_exit);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
new file mode 100644
index 0000000..9009114
--- /dev/null
+++ b/drivers/usb/class/cdc-acm.h
@@ -0,0 +1,82 @@
+/*
+ *
+ * Includes for cdc-acm.c
+ *
+ * Mainly take from usbnet's cdc-ether part
+ *
+ */
+
+/*
+ * CMSPAR, some architectures can't have space and mark parity.
+ */
+
+#ifndef CMSPAR
+#define CMSPAR 0
+#endif
+
+/*
+ * Major and minor numbers.
+ */
+
+#define ACM_TTY_MAJOR 166
+#define ACM_TTY_MINORS 32
+
+/*
+ * Requests.
+ */
+
+#define USB_RT_ACM (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
+
+/*
+ * Output control lines.
+ */
+
+#define ACM_CTRL_DTR 0x01
+#define ACM_CTRL_RTS 0x02
+
+/*
+ * Input control lines and line errors.
+ */
+
+#define ACM_CTRL_DCD 0x01
+#define ACM_CTRL_DSR 0x02
+#define ACM_CTRL_BRK 0x04
+#define ACM_CTRL_RI 0x08
+
+#define ACM_CTRL_FRAMING 0x10
+#define ACM_CTRL_PARITY 0x20
+#define ACM_CTRL_OVERRUN 0x40
+
+/*
+ * Internal driver structures.
+ */
+
+struct acm {
+ struct usb_device *dev; /* the corresponding usb device */
+ struct usb_interface *control; /* control interface */
+ struct usb_interface *data; /* data interface */
+ struct tty_struct *tty; /* the corresponding tty */
+ struct urb *ctrlurb, *readurb, *writeurb; /* urbs */
+ u8 *ctrl_buffer, *read_buffer, *write_buffer; /* buffers of urbs */
+ dma_addr_t ctrl_dma, read_dma, write_dma; /* dma handles of buffers */
+ struct usb_cdc_line_coding line; /* bits, stop, parity */
+ struct work_struct work; /* work queue entry for line discipline waking up */
+ struct tasklet_struct bh; /* rx processing */
+ spinlock_t throttle_lock; /* synchronize throtteling and read callback */
+ unsigned int ctrlin; /* input control lines (DCD, DSR, RI, break, overruns) */
+ unsigned int ctrlout; /* output control lines (DTR, RTS) */
+ unsigned int writesize; /* max packet size for the output bulk endpoint */
+ unsigned int readsize,ctrlsize; /* buffer sizes for freeing */
+ unsigned int used; /* someone has this acm's device open */
+ unsigned int minor; /* acm minor number */
+ unsigned char throttle; /* throttled by tty layer */
+ unsigned char clocal; /* termios CLOCAL */
+ unsigned char ready_for_write; /* write urb can be used */
+ unsigned char resubmit_to_unthrottle; /* throtteling has disabled the read urb */
+ unsigned int ctrl_caps; /* control capabilities from the class specific header */
+};
+
+#define CDC_DATA_INTERFACE_TYPE 0x0a
+
+/* constants describing various quirks and errors */
+#define NO_UNION_NORMAL 1
diff --git a/drivers/usb/class/usb-midi.c b/drivers/usb/class/usb-midi.c
new file mode 100644
index 0000000..5f8af35
--- /dev/null
+++ b/drivers/usb/class/usb-midi.c
@@ -0,0 +1,2154 @@
+/*
+ usb-midi.c -- USB-MIDI driver
+
+ Copyright (C) 2001
+ NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ This driver is based on:
+ - 'Universal Serial Bus Device Class Definition for MIDI Device'
+ - linux/drivers/sound/es1371.c, linux/drivers/usb/audio.c
+ - alsa/lowlevel/pci/cs64xx.c
+ - umidi.c for NetBSD
+ */
+
+/* ------------------------------------------------------------------------- */
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/poll.h>
+#include <linux/sound.h>
+#include <linux/init.h>
+#include <asm/semaphore.h>
+
+#include "usb-midi.h"
+
+/* ------------------------------------------------------------------------- */
+
+/* More verbose on syslog */
+#undef MIDI_DEBUG
+
+#define MIDI_IN_BUFSIZ 1024
+
+#define HAVE_SUPPORT_USB_MIDI_CLASS
+
+#undef HAVE_SUPPORT_ALSA
+
+/* ------------------------------------------------------------------------- */
+
+static int singlebyte = 0;
+module_param(singlebyte, int, 0);
+MODULE_PARM_DESC(singlebyte,"Enable sending MIDI messages with single message packet");
+
+static int maxdevices = 4;
+module_param(maxdevices, int, 0);
+MODULE_PARM_DESC(maxdevices,"Max number of allocatable MIDI device");
+
+static int uvendor = -1;
+module_param(uvendor, int, 0);
+MODULE_PARM_DESC(uvendor, "The USB Vendor ID of a semi-compliant interface");
+
+static int uproduct = -1;
+module_param(uproduct, int, 0);
+MODULE_PARM_DESC(uproduct, "The USB Product ID of a semi-compliant interface");
+
+static int uinterface = -1;
+module_param(uinterface, int, 0);
+MODULE_PARM_DESC(uinterface, "The Interface number of a semi-compliant interface");
+
+static int ualt = -1;
+module_param(ualt, int, 0);
+MODULE_PARM_DESC(ualt, "The optional alternative setting of a semi-compliant interface");
+
+static int umin = -1;
+module_param(umin, int, 0);
+MODULE_PARM_DESC(umin, "The input endpoint of a semi-compliant interface");
+
+static int umout = -1;
+module_param(umout, int, 0);
+MODULE_PARM_DESC(umout, "The output endpoint of a semi-compliant interface");
+
+static int ucable = -1;
+module_param(ucable, int, 0);
+MODULE_PARM_DESC(ucable, "The cable number used for a semi-compliant interface");
+
+/** Note -- the usb_string() returns only Latin-1 characters.
+ * (unicode chars <= 255). To support Japanese, a unicode16LE-to-EUC or
+ * unicode16LE-to-JIS routine is needed to wrap around usb_get_string().
+ **/
+static unsigned short ulangid = 0x0409; /** 0x0411 for Japanese **/
+module_param(ulangid, ushort, 0);
+MODULE_PARM_DESC(ulangid, "The optional preferred USB Language ID for all devices");
+
+MODULE_AUTHOR("NAGANO Daisuke <breeze.nagano@nifty.ne.jp>");
+MODULE_DESCRIPTION("USB-MIDI driver");
+MODULE_LICENSE("GPL");
+
+/* ------------------------------------------------------------------------- */
+
+/** MIDIStreaming Class-Specific Interface Descriptor Subtypes **/
+
+#define MS_DESCRIPTOR_UNDEFINED 0
+#define MS_HEADER 1
+#define MIDI_IN_JACK 2
+#define MIDI_OUT_JACK 3
+/* Spec reads: ELEMENT */
+#define ELEMENT_DESCRIPTOR 4
+
+#define MS_HEADER_LENGTH 7
+
+/** MIDIStreaming Class-Specific Endpoint Descriptor Subtypes **/
+
+#define DESCRIPTOR_UNDEFINED 0
+/* Spec reads: MS_GENERAL */
+#define MS_GENERAL_ENDPOINT 1
+
+/** MIDIStreaming MIDI IN and OUT Jack Types **/
+
+#define JACK_TYPE_UNDEFINED 0
+/* Spec reads: EMBEDDED */
+#define EMBEDDED_JACK 1
+/* Spec reads: EXTERNAL */
+#define EXTERNAL_JACK 2
+
+
+/* structure summary
+
+ usb_midi_state usb_device
+ | |
+ *| *| per ep
+ in_ep out_ep
+ | |
+ *| *| per cable
+ min mout
+ | | (cable to device pairing magic)
+ | |
+ usb_midi_dev dev_id (major,minor) == file->private_data
+
+*/
+
+/* usb_midi_state: corresponds to a USB-MIDI module */
+struct usb_midi_state {
+ struct list_head mididev;
+
+ struct usb_device *usbdev;
+
+ struct list_head midiDevList;
+ struct list_head inEndpointList;
+ struct list_head outEndpointList;
+
+ spinlock_t lock;
+
+ unsigned int count; /* usage counter */
+};
+
+/* midi_out_endpoint: corresponds to an output endpoint */
+struct midi_out_endpoint {
+ struct list_head list;
+
+ struct usb_device *usbdev;
+ int endpoint;
+ spinlock_t lock;
+ wait_queue_head_t wait;
+
+ unsigned char *buf;
+ int bufWrPtr;
+ int bufSize;
+
+ struct urb *urb;
+};
+
+/* midi_in_endpoint: corresponds to an input endpoint */
+struct midi_in_endpoint {
+ struct list_head list;
+
+ struct usb_device *usbdev;
+ int endpoint;
+ spinlock_t lock;
+ wait_queue_head_t wait;
+
+ struct usb_mididev *cables[16]; // cables open for read
+ int readers; // number of cables open for read
+
+ struct urb *urb;
+ unsigned char *recvBuf;
+ int recvBufSize;
+ int urbSubmitted; //FIXME: == readers > 0
+};
+
+/* usb_mididev: corresponds to a logical device */
+struct usb_mididev {
+ struct list_head list;
+
+ struct usb_midi_state *midi;
+ int dev_midi;
+ mode_t open_mode;
+
+ struct {
+ struct midi_in_endpoint *ep;
+ int cableId;
+
+// as we are pushing data from usb_bulk_read to usb_midi_read,
+// we need a larger, cyclic buffer here.
+ unsigned char buf[MIDI_IN_BUFSIZ];
+ int bufRdPtr;
+ int bufWrPtr;
+ int bufRemains;
+ } min;
+
+ struct {
+ struct midi_out_endpoint *ep;
+ int cableId;
+
+ unsigned char buf[3];
+ int bufPtr;
+ int bufRemains;
+
+ int isInExclusive;
+ unsigned char lastEvent;
+ } mout;
+
+ int singlebyte;
+};
+
+/** Map the high nybble of MIDI voice messages to number of Message bytes.
+ * High nyble ranges from 0x8 to 0xe
+ */
+
+static int remains_80e0[] = {
+ 3, /** 0x8X Note Off **/
+ 3, /** 0x9X Note On **/
+ 3, /** 0xAX Poly-key pressure **/
+ 3, /** 0xBX Control Change **/
+ 2, /** 0xCX Program Change **/
+ 2, /** 0xDX Channel pressure **/
+ 3 /** 0xEX PitchBend Change **/
+};
+
+/** Map the messages to a number of Message bytes.
+ *
+ **/
+static int remains_f0f6[] = {
+ 0, /** 0xF0 **/
+ 2, /** 0XF1 **/
+ 3, /** 0XF2 **/
+ 2, /** 0XF3 **/
+ 2, /** 0XF4 (Undefined by MIDI Spec, and subject to change) **/
+ 2, /** 0XF5 (Undefined by MIDI Spec, and subject to change) **/
+ 1 /** 0XF6 **/
+};
+
+/** Map the messages to a CIN (Code Index Number).
+ *
+ **/
+static int cin_f0ff[] = {
+ 4, /** 0xF0 System Exclusive Message Start (special cases may be 6 or 7) */
+ 2, /** 0xF1 **/
+ 3, /** 0xF2 **/
+ 2, /** 0xF3 **/
+ 2, /** 0xF4 **/
+ 2, /** 0xF5 **/
+ 5, /** 0xF6 **/
+ 5, /** 0xF7 End of System Exclusive Message (May be 6 or 7) **/
+ 5, /** 0xF8 **/
+ 5, /** 0xF9 **/
+ 5, /** 0xFA **/
+ 5, /** 0xFB **/
+ 5, /** 0xFC **/
+ 5, /** 0xFD **/
+ 5, /** 0xFE **/
+ 5 /** 0xFF **/
+};
+
+/** Map MIDIStreaming Event packet Code Index Number (low nybble of byte 0)
+ * to the number of bytes of valid MIDI data.
+ *
+ * CIN of 0 and 1 are NOT USED in MIDIStreaming 1.0.
+ *
+ **/
+static int cin_to_len[] = {
+ 0, 0, 2, 3,
+ 3, 1, 2, 3,
+ 3, 3, 3, 3,
+ 2, 2, 3, 1
+};
+
+
+/* ------------------------------------------------------------------------- */
+
+static struct list_head mididevs = LIST_HEAD_INIT(mididevs);
+
+static DECLARE_MUTEX(open_sem);
+static DECLARE_WAIT_QUEUE_HEAD(open_wait);
+
+
+/* ------------------------------------------------------------------------- */
+
+static void usb_write_callback(struct urb *urb, struct pt_regs *regs)
+{
+ struct midi_out_endpoint *ep = (struct midi_out_endpoint *)urb->context;
+
+ if ( waitqueue_active( &ep->wait ) )
+ wake_up_interruptible( &ep->wait );
+}
+
+
+static int usb_write( struct midi_out_endpoint *ep, unsigned char *buf, int len )
+{
+ struct usb_device *d;
+ int pipe;
+ int ret = 0;
+ int status;
+ int maxretry = 50;
+
+ DECLARE_WAITQUEUE(wait,current);
+ init_waitqueue_head(&ep->wait);
+
+ d = ep->usbdev;
+ pipe = usb_sndbulkpipe(d, ep->endpoint);
+ usb_fill_bulk_urb( ep->urb, d, pipe, (unsigned char*)buf, len,
+ usb_write_callback, ep );
+
+ status = usb_submit_urb(ep->urb, GFP_KERNEL);
+
+ if (status) {
+ printk(KERN_ERR "usbmidi: Cannot submit urb (%d)\n",status);
+ ret = -EIO;
+ goto error;
+ }
+
+ add_wait_queue( &ep->wait, &wait );
+ set_current_state( TASK_INTERRUPTIBLE );
+
+ while( ep->urb->status == -EINPROGRESS ) {
+ if ( maxretry-- < 0 ) {
+ printk(KERN_ERR "usbmidi: usb_bulk_msg timed out\n");
+ ret = -ETIME;
+ break;
+ }
+ interruptible_sleep_on_timeout( &ep->wait, 10 );
+ }
+ set_current_state( TASK_RUNNING );
+ remove_wait_queue( &ep->wait, &wait );
+
+error:
+ return ret;
+}
+
+
+/** Copy data from URB to In endpoint buf.
+ * Discard if CIN == 0 or CIN = 1.
+ *
+ *
+ **/
+
+static void usb_bulk_read(struct urb *urb, struct pt_regs *regs)
+{
+ struct midi_in_endpoint *ep = (struct midi_in_endpoint *)(urb->context);
+ unsigned char *data = urb->transfer_buffer;
+ int i, j, wake;
+
+ if ( !ep->urbSubmitted ) {
+ return;
+ }
+
+ if ( (urb->status == 0) && (urb->actual_length > 0) ) {
+ wake = 0;
+ spin_lock( &ep->lock );
+
+ for(j = 0; j < urb->actual_length; j += 4) {
+ int cin = (data[j]>>0)&0xf;
+ int cab = (data[j]>>4)&0xf;
+ struct usb_mididev *cable = ep->cables[cab];
+ if ( cable ) {
+ int len = cin_to_len[cin]; /** length of MIDI data **/
+ for (i = 0; i < len; i++) {
+ cable->min.buf[cable->min.bufWrPtr] = data[1+i+j];
+ cable->min.bufWrPtr = (cable->min.bufWrPtr+1)%MIDI_IN_BUFSIZ;
+ if (cable->min.bufRemains < MIDI_IN_BUFSIZ)
+ cable->min.bufRemains += 1;
+ else /** need to drop data **/
+ cable->min.bufRdPtr += (cable->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
+ wake = 1;
+ }
+ }
+ }
+
+ spin_unlock ( &ep->lock );
+ if ( wake ) {
+ wake_up( &ep->wait );
+ }
+ }
+
+ /* urb->dev must be reinitialized on 2.4.x kernels */
+ urb->dev = ep->usbdev;
+
+ urb->actual_length = 0;
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+
+
+/* ------------------------------------------------------------------------- */
+
+/* This routine must be called with spin_lock */
+
+/** Wrapper around usb_write().
+ * This routine must be called with spin_lock held on ep.
+ * Called by midiWrite(), putOneMidiEvent(), and usb_midi_write();
+ **/
+static int flush_midi_buffer( struct midi_out_endpoint *ep )
+{
+ int ret=0;
+
+ if ( ep->bufWrPtr > 0 ) {
+ ret = usb_write( ep, ep->buf, ep->bufWrPtr );
+ ep->bufWrPtr = 0;
+ }
+
+ return ret;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+
+/** Given a MIDI Event, determine size of data to be attached to
+ * USB-MIDI packet.
+ * Returns 1, 2 or 3.
+ * Called by midiWrite();
+ * Uses remains_80e0 and remains_f0f6;
+ **/
+static int get_remains(int event)
+{
+ int ret;
+
+ if ( event < 0x80 ) {
+ ret = 1;
+ } else if ( event < 0xf0 ) {
+ ret = remains_80e0[((event-0x80)>>4)&0x0f];
+ } else if ( event < 0xf7 ) {
+ ret = remains_f0f6[event-0xf0];
+ } else {
+ ret = 1;
+ }
+
+ return ret;
+}
+
+/** Given the output MIDI data in the output buffer, computes a reasonable
+ * CIN.
+ * Called by putOneMidiEvent().
+ **/
+static int get_CIN( struct usb_mididev *m )
+{
+ int cin;
+
+ if ( m->mout.buf[0] == 0xf7 ) {
+ cin = 5;
+ }
+ else if ( m->mout.buf[1] == 0xf7 ) {
+ cin = 6;
+ }
+ else if ( m->mout.buf[2] == 0xf7 ) {
+ cin = 7;
+ }
+ else {
+ if ( m->mout.isInExclusive == 1 ) {
+ cin = 4;
+ } else if ( m->mout.buf[0] < 0x80 ) {
+ /** One byte that we know nothing about. **/
+ cin = 0xF;
+ } else if ( m->mout.buf[0] < 0xf0 ) {
+ /** MIDI Voice messages 0x8X to 0xEX map to cin 0x8 to 0xE. **/
+ cin = (m->mout.buf[0]>>4)&0x0f;
+ }
+ else {
+ /** Special lookup table exists for real-time events. **/
+ cin = cin_f0ff[m->mout.buf[0]-0xf0];
+ }
+ }
+
+ return cin;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+
+
+/** Move data to USB endpoint buffer.
+ *
+ **/
+static int put_one_midi_event(struct usb_mididev *m)
+{
+ int cin;
+ unsigned long flags;
+ struct midi_out_endpoint *ep = m->mout.ep;
+ int ret=0;
+
+ cin = get_CIN( m );
+ if ( cin > 0x0f || cin < 0 ) {
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave( &ep->lock, flags );
+ ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | cin;
+ ep->buf[ep->bufWrPtr++] = m->mout.buf[0];
+ ep->buf[ep->bufWrPtr++] = m->mout.buf[1];
+ ep->buf[ep->bufWrPtr++] = m->mout.buf[2];
+ if ( ep->bufWrPtr >= ep->bufSize ) {
+ ret = flush_midi_buffer( ep );
+ }
+ spin_unlock_irqrestore( &ep->lock, flags);
+
+ m->mout.buf[0] = m->mout.buf[1] = m->mout.buf[2] = 0;
+ m->mout.bufPtr = 0;
+
+ return ret;
+}
+
+/** Write the MIDI message v on the midi device.
+ * Called by usb_midi_write();
+ * Responsible for packaging a MIDI data stream into USB-MIDI packets.
+ **/
+
+static int midi_write( struct usb_mididev *m, int v )
+{
+ unsigned long flags;
+ struct midi_out_endpoint *ep = m->mout.ep;
+ int ret=0;
+ unsigned char c = (unsigned char)v;
+ unsigned char sysrt_buf[4];
+
+ if ( m->singlebyte != 0 ) {
+ /** Simple code to handle the single-byte USB-MIDI protocol. */
+ spin_lock_irqsave( &ep->lock, flags );
+ if ( ep->bufWrPtr+4 > ep->bufSize ) {
+ ret = flush_midi_buffer( ep );
+ if ( !ret ) {
+ spin_unlock_irqrestore( &ep->lock, flags );
+ return ret;
+ }
+ }
+ ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | 0x0f; /* single byte */
+ ep->buf[ep->bufWrPtr++] = c;
+ ep->buf[ep->bufWrPtr++] = 0;
+ ep->buf[ep->bufWrPtr++] = 0;
+ if ( ep->bufWrPtr >= ep->bufSize ) {
+ ret = flush_midi_buffer( ep );
+ }
+ spin_unlock_irqrestore( &ep->lock, flags );
+
+ return ret;
+ }
+ /** Normal USB-MIDI protocol begins here. */
+
+ if ( c > 0xf7 ) { /* system: Realtime messages */
+ /** Realtime messages are written IMMEDIATELY. */
+ sysrt_buf[0] = (m->mout.cableId<<4) | 0x0f;
+ sysrt_buf[1] = c;
+ sysrt_buf[2] = 0;
+ sysrt_buf[3] = 0;
+ spin_lock_irqsave( &ep->lock, flags );
+ ret = usb_write( ep, sysrt_buf, 4 );
+ spin_unlock_irqrestore( &ep->lock, flags );
+ /* m->mout.lastEvent = 0; */
+
+ return ret;
+ }
+
+ if ( c >= 0x80 ) {
+ if ( c < 0xf0 ) {
+ m->mout.lastEvent = c;
+ m->mout.isInExclusive = 0;
+ m->mout.bufRemains = get_remains(c);
+ } else if ( c == 0xf0 ) {
+ /* m->mout.lastEvent = 0; */
+ m->mout.isInExclusive = 1;
+ m->mout.bufRemains = get_remains(c);
+ } else if ( c == 0xf7 && m->mout.isInExclusive == 1 ) {
+ /* m->mout.lastEvent = 0; */
+ m->mout.isInExclusive = 0;
+ m->mout.bufRemains = 1;
+ } else if ( c > 0xf0 ) {
+ /* m->mout.lastEvent = 0; */
+ m->mout.isInExclusive = 0;
+ m->mout.bufRemains = get_remains(c);
+ }
+
+ } else if ( m->mout.bufRemains == 0 && m->mout.isInExclusive == 0 ) {
+ if ( m->mout.lastEvent == 0 ) {
+ return 0; /* discard, waiting for the first event */
+ }
+ /** track status **/
+ m->mout.buf[0] = m->mout.lastEvent;
+ m->mout.bufPtr = 1;
+ m->mout.bufRemains = get_remains(m->mout.lastEvent)-1;
+ }
+
+ m->mout.buf[m->mout.bufPtr++] = c;
+ m->mout.bufRemains--;
+ if ( m->mout.bufRemains == 0 || m->mout.bufPtr >= 3) {
+ ret = put_one_midi_event(m);
+ }
+
+ return ret;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+/** Basic operation on /dev/midiXX as registered through struct file_operations.
+ *
+ * Basic contract: Used to change the current read/write position in a file.
+ * On success, the non-negative position is reported.
+ * On failure, the negative of an error code is reported.
+ *
+ * Because a MIDIStream is not a file, all seek operations are doomed to fail.
+ *
+ **/
+static loff_t usb_midi_llseek(struct file *file, loff_t offset, int origin)
+{
+ /** Tell user you cannot seek on a PIPE-like device. **/
+ return -ESPIPE;
+}
+
+
+/** Basic operation on /dev/midiXX as registered through struct file_operations.
+ *
+ * Basic contract: Block until count bytes have been read or an error occurs.
+ *
+ **/
+
+static ssize_t usb_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+ struct usb_mididev *m = (struct usb_mididev *)file->private_data;
+ struct midi_in_endpoint *ep = m->min.ep;
+ ssize_t ret;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if ( !access_ok(VERIFY_READ, buffer, count) ) {
+ return -EFAULT;
+ }
+ if ( count == 0 ) {
+ return 0;
+ }
+
+ add_wait_queue( &ep->wait, &wait );
+ ret = 0;
+ while( count > 0 ) {
+ int cnt;
+ int d = (int)count;
+
+ cnt = m->min.bufRemains;
+ if ( cnt > d ) {
+ cnt = d;
+ }
+
+ if ( cnt <= 0 ) {
+ if ( file->f_flags & O_NONBLOCK ) {
+ if (!ret)
+ ret = -EAGAIN;
+ break;
+ }
+ __set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ if (signal_pending(current)) {
+ if(!ret)
+ ret=-ERESTARTSYS;
+ break;
+ }
+ continue;
+ }
+
+ {
+ int i;
+ unsigned long flags; /* used to synchronize access to the endpoint */
+ spin_lock_irqsave( &ep->lock, flags );
+ for (i = 0; i < cnt; i++) {
+ if ( copy_to_user( buffer+i, m->min.buf+m->min.bufRdPtr, 1 ) ) {
+ if ( !ret )
+ ret = -EFAULT;
+ break;
+ }
+ m->min.bufRdPtr = (m->min.bufRdPtr+1)%MIDI_IN_BUFSIZ;
+ m->min.bufRemains -= 1;
+ }
+ spin_unlock_irqrestore( &ep->lock, flags );
+ }
+
+ count-=cnt;
+ buffer+=cnt;
+ ret+=cnt;
+
+ break;
+ }
+
+ remove_wait_queue( &ep->wait, &wait );
+ set_current_state(TASK_RUNNING);
+
+ return ret;
+}
+
+
+/** Basic operation on /dev/midiXX as registered through struct file_operations.
+ *
+ * Basic Contract: Take MIDI data byte-by-byte and pass it to
+ * writeMidi() which packages MIDI data into USB-MIDI stream.
+ * Then flushMidiData() is called to ensure all bytes have been written
+ * in a timely fashion.
+ *
+ **/
+
+static ssize_t usb_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+ struct usb_mididev *m = (struct usb_mididev *)file->private_data;
+ ssize_t ret;
+ unsigned long int flags;
+
+ if ( !access_ok(VERIFY_READ, buffer, count) ) {
+ return -EFAULT;
+ }
+ if ( count == 0 ) {
+ return 0;
+ }
+
+ ret = 0;
+ while( count > 0 ) {
+ unsigned char c;
+
+ if (copy_from_user((unsigned char *)&c, buffer, 1)) {
+ if ( ret == 0 )
+ ret = -EFAULT;
+ break;
+ }
+ if( midi_write(m, (int)c) ) {
+ if ( ret == 0 )
+ ret = -EFAULT;
+ break;
+ }
+ count--;
+ buffer++;
+ ret++;
+ }
+
+ spin_lock_irqsave( &m->mout.ep->lock, flags );
+ if ( flush_midi_buffer(m->mout.ep) < 0 ) {
+ ret = -EFAULT;
+ }
+ spin_unlock_irqrestore( &m->mout.ep->lock, flags );
+
+ return ret;
+}
+
+/** Basic operation on /dev/midiXX as registered through struct file_operations.
+ *
+ * Basic contract: Wait (spin) until ready to read or write on the file.
+ *
+ **/
+static unsigned int usb_midi_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct usb_mididev *m = (struct usb_mididev *)file->private_data;
+ struct midi_in_endpoint *iep = m->min.ep;
+ struct midi_out_endpoint *oep = m->mout.ep;
+ unsigned long flags;
+ unsigned int mask = 0;
+
+ if ( file->f_mode & FMODE_READ ) {
+ poll_wait( file, &iep->wait, wait );
+ spin_lock_irqsave( &iep->lock, flags );
+ if ( m->min.bufRemains > 0 )
+ mask |= POLLIN | POLLRDNORM;
+ spin_unlock_irqrestore( &iep->lock, flags );
+ }
+
+ if ( file->f_mode & FMODE_WRITE ) {
+ poll_wait( file, &oep->wait, wait );
+ spin_lock_irqsave( &oep->lock, flags );
+ if ( oep->bufWrPtr < oep->bufSize )
+ mask |= POLLOUT | POLLWRNORM;
+ spin_unlock_irqrestore( &oep->lock, flags );
+ }
+
+ return mask;
+}
+
+
+/** Basic operation on /dev/midiXX as registered through struct file_operations.
+ *
+ * Basic contract: This is always the first operation performed on the
+ * device node. If no method is defined, the open succeeds without any
+ * notification given to the module.
+ *
+ **/
+
+static int usb_midi_open(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ DECLARE_WAITQUEUE(wait, current);
+ struct usb_midi_state *s;
+ struct usb_mididev *m;
+ unsigned long flags;
+ int succeed = 0;
+
+#if 0
+ printk(KERN_INFO "usb-midi: Open minor= %d.\n", minor);
+#endif
+
+ for(;;) {
+ down(&open_sem);
+ list_for_each_entry(s, &mididevs, mididev) {
+ list_for_each_entry(m, &s->midiDevList, list) {
+ if ( !((m->dev_midi ^ minor) & ~0xf) )
+ goto device_found;
+ }
+ }
+ up(&open_sem);
+ return -ENODEV;
+
+ device_found:
+ if ( !s->usbdev ) {
+ up(&open_sem);
+ return -EIO;
+ }
+ if ( !(m->open_mode & file->f_mode) ) {
+ break;
+ }
+ if ( file->f_flags & O_NONBLOCK ) {
+ up(&open_sem);
+ return -EBUSY;
+ }
+ __set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue( &open_wait, &wait );
+ up(&open_sem);
+ schedule();
+ remove_wait_queue( &open_wait, &wait );
+ if ( signal_pending(current) ) {
+ return -ERESTARTSYS;
+ }
+ }
+
+ file->private_data = m;
+ spin_lock_irqsave( &s->lock, flags );
+
+ if ( !(m->open_mode & (FMODE_READ | FMODE_WRITE)) ) {
+ //FIXME: intented semantics unclear here
+ m->min.bufRdPtr = 0;
+ m->min.bufWrPtr = 0;
+ m->min.bufRemains = 0;
+ spin_lock_init(&m->min.ep->lock);
+
+ m->mout.bufPtr = 0;
+ m->mout.bufRemains = 0;
+ m->mout.isInExclusive = 0;
+ m->mout.lastEvent = 0;
+ spin_lock_init(&m->mout.ep->lock);
+ }
+
+ if ( (file->f_mode & FMODE_READ) && m->min.ep != NULL ) {
+ unsigned long int flagsep;
+ spin_lock_irqsave( &m->min.ep->lock, flagsep );
+ m->min.ep->cables[m->min.cableId] = m;
+ m->min.ep->readers += 1;
+ m->min.bufRdPtr = 0;
+ m->min.bufWrPtr = 0;
+ m->min.bufRemains = 0;
+ spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
+
+ if ( !(m->min.ep->urbSubmitted)) {
+
+ /* urb->dev must be reinitialized on 2.4.x kernels */
+ m->min.ep->urb->dev = m->min.ep->usbdev;
+
+ if ( usb_submit_urb(m->min.ep->urb, GFP_ATOMIC) ) {
+ printk(KERN_ERR "usbmidi: Cannot submit urb for MIDI-IN\n");
+ }
+ m->min.ep->urbSubmitted = 1;
+ }
+ m->open_mode |= FMODE_READ;
+ succeed = 1;
+ }
+
+ if ( (file->f_mode & FMODE_WRITE) && m->mout.ep != NULL ) {
+ m->mout.bufPtr = 0;
+ m->mout.bufRemains = 0;
+ m->mout.isInExclusive = 0;
+ m->mout.lastEvent = 0;
+ m->open_mode |= FMODE_WRITE;
+ succeed = 1;
+ }
+
+ spin_unlock_irqrestore( &s->lock, flags );
+
+ s->count++;
+ up(&open_sem);
+
+ /** Changed to prevent extra increments to USE_COUNT. **/
+ if (!succeed) {
+ return -EBUSY;
+ }
+
+#if 0
+ printk(KERN_INFO "usb-midi: Open Succeeded. minor= %d.\n", minor);
+#endif
+
+ return nonseekable_open(inode, file); /** Success. **/
+}
+
+
+/** Basic operation on /dev/midiXX as registered through struct file_operations.
+ *
+ * Basic contract: Close an opened file and deallocate anything we allocated.
+ * Like open(), this can be missing. If open set file->private_data,
+ * release() must clear it.
+ *
+ **/
+
+static int usb_midi_release(struct inode *inode, struct file *file)
+{
+ struct usb_mididev *m = (struct usb_mididev *)file->private_data;
+ struct usb_midi_state *s = (struct usb_midi_state *)m->midi;
+
+#if 0
+ printk(KERN_INFO "usb-midi: Close.\n");
+#endif
+
+ down(&open_sem);
+
+ if ( m->open_mode & FMODE_WRITE ) {
+ m->open_mode &= ~FMODE_WRITE;
+ usb_kill_urb( m->mout.ep->urb );
+ }
+
+ if ( m->open_mode & FMODE_READ ) {
+ unsigned long int flagsep;
+ spin_lock_irqsave( &m->min.ep->lock, flagsep );
+ m->min.ep->cables[m->min.cableId] = NULL; // discard cable
+ m->min.ep->readers -= 1;
+ m->open_mode &= ~FMODE_READ;
+ if ( m->min.ep->readers == 0 &&
+ m->min.ep->urbSubmitted ) {
+ m->min.ep->urbSubmitted = 0;
+ usb_kill_urb(m->min.ep->urb);
+ }
+ spin_unlock_irqrestore( &m->min.ep->lock, flagsep );
+ }
+
+ s->count--;
+
+ up(&open_sem);
+ wake_up(&open_wait);
+
+ file->private_data = NULL;
+ return 0;
+}
+
+static struct file_operations usb_midi_fops = {
+ .owner = THIS_MODULE,
+ .llseek = usb_midi_llseek,
+ .read = usb_midi_read,
+ .write = usb_midi_write,
+ .poll = usb_midi_poll,
+ .open = usb_midi_open,
+ .release = usb_midi_release,
+};
+
+/* ------------------------------------------------------------------------- */
+
+/** Returns filled midi_in_endpoint structure or null on failure.
+ *
+ * Parameters:
+ * d - a usb_device
+ * endPoint - An usb endpoint in the range 0 to 15.
+ * Called by allocUsbMidiDev();
+ *
+ **/
+
+static struct midi_in_endpoint *alloc_midi_in_endpoint( struct usb_device *d, int endPoint )
+{
+ struct midi_in_endpoint *ep;
+ int bufSize;
+ int pipe;
+
+ endPoint &= 0x0f; /* Silently force endPoint to lie in range 0 to 15. */
+
+ pipe = usb_rcvbulkpipe( d, endPoint );
+ bufSize = usb_maxpacket( d, pipe, 0 );
+ /* usb_pipein() = ! usb_pipeout() = true for an in Endpoint */
+
+ ep = (struct midi_in_endpoint *)kmalloc(sizeof(struct midi_in_endpoint), GFP_KERNEL);
+ if ( !ep ) {
+ printk(KERN_ERR "usbmidi: no memory for midi in-endpoint\n");
+ return NULL;
+ }
+ memset( ep, 0, sizeof(struct midi_in_endpoint) );
+// this sets cables[] and readers to 0, too.
+// for (i=0; i<16; i++) ep->cables[i] = 0; // discard cable
+// ep->readers = 0;
+
+ ep->endpoint = endPoint;
+
+ ep->recvBuf = (unsigned char *)kmalloc(sizeof(unsigned char)*(bufSize), GFP_KERNEL);
+ if ( !ep->recvBuf ) {
+ printk(KERN_ERR "usbmidi: no memory for midi in-endpoint buffer\n");
+ kfree(ep);
+ return NULL;
+ }
+
+ ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
+ if ( !ep->urb ) {
+ printk(KERN_ERR "usbmidi: no memory for midi in-endpoint urb\n");
+ kfree(ep->recvBuf);
+ kfree(ep);
+ return NULL;
+ }
+ usb_fill_bulk_urb( ep->urb, d,
+ usb_rcvbulkpipe(d, endPoint),
+ (unsigned char *)ep->recvBuf, bufSize,
+ usb_bulk_read, ep );
+
+ /* ep->bufRdPtr = 0; */
+ /* ep->bufWrPtr = 0; */
+ /* ep->bufRemains = 0; */
+ /* ep->urbSubmitted = 0; */
+ ep->recvBufSize = bufSize;
+
+ init_waitqueue_head(&ep->wait);
+
+ return ep;
+}
+
+static int remove_midi_in_endpoint( struct midi_in_endpoint *min )
+{
+ usb_kill_urb( min->urb );
+ usb_free_urb( min->urb );
+ kfree( min->recvBuf );
+ kfree( min );
+
+ return 0;
+}
+
+/** Returns filled midi_out_endpoint structure or null on failure.
+ *
+ * Parameters:
+ * d - a usb_device
+ * endPoint - An usb endpoint in the range 0 to 15.
+ * Called by allocUsbMidiDev();
+ *
+ **/
+static struct midi_out_endpoint *alloc_midi_out_endpoint( struct usb_device *d, int endPoint )
+{
+ struct midi_out_endpoint *ep = NULL;
+ int pipe;
+ int bufSize;
+
+ endPoint &= 0x0f;
+ pipe = usb_sndbulkpipe( d, endPoint );
+ bufSize = usb_maxpacket( d, pipe, 1 );
+
+ ep = (struct midi_out_endpoint *)kmalloc(sizeof(struct midi_out_endpoint), GFP_KERNEL);
+ if ( !ep ) {
+ printk(KERN_ERR "usbmidi: no memory for midi out-endpoint\n");
+ return NULL;
+ }
+ memset( ep, 0, sizeof(struct midi_out_endpoint) );
+
+ ep->endpoint = endPoint;
+ ep->buf = (unsigned char *)kmalloc(sizeof(unsigned char)*bufSize, GFP_KERNEL);
+ if ( !ep->buf ) {
+ printk(KERN_ERR "usbmidi: no memory for midi out-endpoint buffer\n");
+ kfree(ep);
+ return NULL;
+ }
+
+ ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */
+ if ( !ep->urb ) {
+ printk(KERN_ERR "usbmidi: no memory for midi out-endpoint urb\n");
+ kfree(ep->buf);
+ kfree(ep);
+ return NULL;
+ }
+
+ ep->bufSize = bufSize;
+ /* ep->bufWrPtr = 0; */
+
+ init_waitqueue_head(&ep->wait);
+
+ return ep;
+}
+
+
+static int remove_midi_out_endpoint( struct midi_out_endpoint *mout )
+{
+ usb_kill_urb( mout->urb );
+ usb_free_urb( mout->urb );
+ kfree( mout->buf );
+ kfree( mout );
+
+ return 0;
+}
+
+
+/** Returns a filled usb_mididev structure, registered as a Linux MIDI device.
+ *
+ * Returns null if memory is not available or the device cannot be registered.
+ * Called by allocUsbMidiDev();
+ *
+ **/
+static struct usb_mididev *allocMidiDev(
+ struct usb_midi_state *s,
+ struct midi_in_endpoint *min,
+ struct midi_out_endpoint *mout,
+ int inCableId,
+ int outCableId )
+{
+ struct usb_mididev *m;
+
+ m = (struct usb_mididev *)kmalloc(sizeof(struct usb_mididev), GFP_KERNEL);
+ if (!m) {
+ printk(KERN_ERR "usbmidi: no memory for midi device\n");
+ return NULL;
+ }
+
+ memset(m, 0, sizeof(struct usb_mididev));
+
+ if ((m->dev_midi = register_sound_midi(&usb_midi_fops, -1)) < 0) {
+ printk(KERN_ERR "usbmidi: cannot register midi device\n");
+ kfree(m);
+ return NULL;
+ }
+
+ m->midi = s;
+ /* m->open_mode = 0; */
+
+ if ( min ) {
+ m->min.ep = min;
+ m->min.ep->usbdev = s->usbdev;
+ m->min.cableId = inCableId;
+ }
+ /* m->min.bufPtr = 0; */
+ /* m->min.bufRemains = 0; */
+
+ if ( mout ) {
+ m->mout.ep = mout;
+ m->mout.ep->usbdev = s->usbdev;
+ m->mout.cableId = outCableId;
+ }
+ /* m->mout.bufPtr = 0; */
+ /* m->mout.bufRemains = 0; */
+ /* m->mout.isInExclusive = 0; */
+ /* m->mout.lastEvent = 0; */
+
+ m->singlebyte = singlebyte;
+
+ return m;
+}
+
+
+static void release_midi_device( struct usb_midi_state *s )
+{
+ struct usb_mididev *m;
+ struct midi_in_endpoint *min;
+ struct midi_out_endpoint *mout;
+
+ if ( s->count > 0 ) {
+ up(&open_sem);
+ return;
+ }
+ up( &open_sem );
+ wake_up( &open_wait );
+
+ while(!list_empty(&s->inEndpointList)) {
+ min = list_entry(s->inEndpointList.next, struct midi_in_endpoint, list);
+ list_del(&min->list);
+ remove_midi_in_endpoint(min);
+ }
+
+ while(!list_empty(&s->outEndpointList)) {
+ mout = list_entry(s->outEndpointList.next, struct midi_out_endpoint, list);
+ list_del(&mout->list);
+ remove_midi_out_endpoint(mout);
+ }
+
+ while(!list_empty(&s->midiDevList)) {
+ m = list_entry(s->midiDevList.next, struct usb_mididev, list);
+ list_del(&m->list);
+ kfree(m);
+ }
+
+ kfree(s);
+
+ return;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+/** Utility routine to find a descriptor in a dump of many descriptors.
+ * Returns start of descriptor or NULL if not found.
+ * descStart pointer to list of interfaces.
+ * descLength length (in bytes) of dump
+ * after (ignored if NULL) this routine returns only descriptors after "after"
+ * dtype (mandatory) The descriptor type.
+ * iface (ignored if -1) returns descriptor at/following given interface
+ * altSetting (ignored if -1) returns descriptor at/following given altSetting
+ *
+ *
+ * Called by parseDescriptor(), find_csinterface_descriptor();
+ *
+ */
+static void *find_descriptor( void *descStart, unsigned int descLength, void *after, unsigned char dtype, int iface, int altSetting )
+{
+ unsigned char *p, *end, *next;
+ int interfaceNumber = -1, altSet = -1;
+
+ p = descStart;
+ end = p + descLength;
+ for( ; p < end; ) {
+ if ( p[0] < 2 )
+ return NULL;
+ next = p + p[0];
+ if ( next > end )
+ return NULL;
+ if ( p[1] == USB_DT_INTERFACE ) {
+ if ( p[0] < USB_DT_INTERFACE_SIZE )
+ return NULL;
+ interfaceNumber = p[2];
+ altSet = p[3];
+ }
+ if ( p[1] == dtype &&
+ ( !after || ( p > (unsigned char *)after) ) &&
+ ( ( iface == -1) || (iface == interfaceNumber) ) &&
+ ( (altSetting == -1) || (altSetting == altSet) )) {
+ return p;
+ }
+ p = next;
+ }
+ return NULL;
+}
+
+/** Utility to find a class-specific interface descriptor.
+ * dsubtype is a descriptor subtype
+ * Called by parseDescriptor();
+ **/
+static void *find_csinterface_descriptor(void *descStart, unsigned int descLength, void *after, u8 dsubtype, int iface, int altSetting)
+{
+ unsigned char *p;
+
+ p = find_descriptor( descStart, descLength, after, USB_DT_CS_INTERFACE, iface, altSetting );
+ while ( p ) {
+ if ( p[0] >= 3 && p[2] == dsubtype )
+ return p;
+ p = find_descriptor( descStart, descLength, p, USB_DT_CS_INTERFACE,
+ iface, altSetting );
+ }
+ return NULL;
+}
+
+
+/** The magic of making a new usb_midi_device from config happens here.
+ *
+ * The caller is responsible for free-ing this return value (if not NULL).
+ *
+ **/
+static struct usb_midi_device *parse_descriptor( struct usb_device *d, unsigned char *buffer, int bufSize, unsigned int ifnum , unsigned int altSetting, int quirks)
+{
+ struct usb_midi_device *u;
+ unsigned char *p1;
+ unsigned char *p2;
+ unsigned char *next;
+ int iep, oep;
+ int length;
+ unsigned long longBits;
+ int pins, nbytes, offset, shift, jack;
+#ifdef HAVE_JACK_STRINGS
+ /** Jacks can have associated names. **/
+ unsigned char jack2string[256];
+#endif
+
+ u = NULL;
+ /* find audiocontrol interface */
+ p1 = find_csinterface_descriptor( buffer, bufSize, NULL,
+ MS_HEADER, ifnum, altSetting);
+
+ if ( !p1 ) {
+ goto error_end;
+ }
+
+ if ( p1[0] < MS_HEADER_LENGTH ) {
+ goto error_end;
+ }
+
+ /* Assume success. Since the device corresponds to USB-MIDI spec, we assume
+ that the rest of the USB 2.0 spec is obeyed. */
+
+ u = (struct usb_midi_device *)kmalloc( sizeof(struct usb_midi_device), GFP_KERNEL );
+ if ( !u ) {
+ return NULL;
+ }
+ u->deviceName = NULL;
+ u->idVendor = le16_to_cpu(d->descriptor.idVendor);
+ u->idProduct = le16_to_cpu(d->descriptor.idProduct);
+ u->interface = ifnum;
+ u->altSetting = altSetting;
+ u->in[0].endpoint = -1;
+ u->in[0].cableId = -1;
+ u->out[0].endpoint = -1;
+ u->out[0].cableId = -1;
+
+
+ printk(KERN_INFO "usb-midi: Found MIDIStreaming device corresponding to Release %d.%02d of spec.\n",
+ (p1[4] >> 4) * 10 + (p1[4] & 0x0f ),
+ (p1[3] >> 4) * 10 + (p1[3] & 0x0f )
+ );
+
+ length = p1[5] | (p1[6] << 8);
+
+#ifdef HAVE_JACK_STRINGS
+ memset(jack2string, 0, sizeof(unsigned char) * 256);
+#endif
+
+ length -= p1[0];
+ for (p2 = p1 + p1[0]; length > 0; p2 = next) {
+ next = p2 + p2[0];
+ length -= p2[0];
+
+ if (p2[0] < 2 )
+ break;
+ if (p2[1] != USB_DT_CS_INTERFACE)
+ break;
+ if (p2[2] == MIDI_IN_JACK && p2[0] >= 6 ) {
+ jack = p2[4];
+#ifdef HAVE_JACK_STRINGS
+ jack2string[jack] = p2[5];
+#endif
+ printk(KERN_INFO "usb-midi: Found IN Jack 0x%02x %s\n",
+ jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL" );
+ } else if ( p2[2] == MIDI_OUT_JACK && p2[0] >= 6) {
+ pins = p2[5];
+ if ( p2[0] < (6 + 2 * pins) )
+ continue;
+ jack = p2[4];
+#ifdef HAVE_JACK_STRINGS
+ jack2string[jack] = p2[5 + 2 * pins];
+#endif
+ printk(KERN_INFO "usb-midi: Found OUT Jack 0x%02x %s, %d pins\n",
+ jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL", pins );
+ } else if ( p2[2] == ELEMENT_DESCRIPTOR && p2[0] >= 10) {
+ pins = p2[4];
+ if ( p2[0] < (9 + 2 * pins ) )
+ continue;
+ nbytes = p2[8 + 2 * pins ];
+ if ( p2[0] < (10 + 2 * pins + nbytes) )
+ continue;
+ longBits = 0L;
+ for ( offset = 0, shift = 0; offset < nbytes && offset < 8; offset ++, shift += 8) {
+ longBits |= ((long)(p2[9 + 2 * pins + offset])) << shift;
+ }
+ jack = p2[3];
+#ifdef HAVE_JACK_STRINGS
+ jack2string[jack] = p2[9 + 2 * pins + nbytes];
+#endif
+ printk(KERN_INFO "usb-midi: Found ELEMENT 0x%02x, %d/%d pins in/out, bits: 0x%016lx\n",
+ jack, pins, (int)(p2[5 + 2 * pins]), (long)longBits );
+ } else {
+ }
+ }
+
+ iep=0;
+ oep=0;
+
+ if (quirks==0) {
+ /* MIDISTREAM */
+ p2 = NULL;
+ for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
+ ifnum, altSetting ); p1; p1 = next ) {
+ next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
+ ifnum, altSetting );
+ p2 = find_descriptor(buffer, bufSize, p1, USB_DT_CS_ENDPOINT,
+ ifnum, altSetting );
+
+ if ( p2 && next && ( p2 > next ) )
+ p2 = NULL;
+
+ if ( p1[0] < 9 || !p2 || p2[0] < 4 )
+ continue;
+
+ if ( (p1[2] & 0x80) == 0x80 ) {
+ if ( iep < 15 ) {
+ pins = p2[3]; /* not pins -- actually "cables" */
+ if ( pins > 16 )
+ pins = 16;
+ u->in[iep].endpoint = p1[2];
+ u->in[iep].cableId = ( 1 << pins ) - 1;
+ if ( u->in[iep].cableId )
+ iep ++;
+ if ( iep < 15 ) {
+ u->in[iep].endpoint = -1;
+ u->in[iep].cableId = -1;
+ }
+ }
+ } else {
+ if ( oep < 15 ) {
+ pins = p2[3]; /* not pins -- actually "cables" */
+ if ( pins > 16 )
+ pins = 16;
+ u->out[oep].endpoint = p1[2];
+ u->out[oep].cableId = ( 1 << pins ) - 1;
+ if ( u->out[oep].cableId )
+ oep ++;
+ if ( oep < 15 ) {
+ u->out[oep].endpoint = -1;
+ u->out[oep].cableId = -1;
+ }
+ }
+ }
+
+ }
+ } else if (quirks==1) {
+ /* YAMAHA quirks */
+ for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT,
+ ifnum, altSetting ); p1; p1 = next ) {
+ next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT,
+ ifnum, altSetting );
+
+ if ( p1[0] < 7 )
+ continue;
+
+ if ( (p1[2] & 0x80) == 0x80 ) {
+ if ( iep < 15 ) {
+ pins = iep+1;
+ if ( pins > 16 )
+ pins = 16;
+ u->in[iep].endpoint = p1[2];
+ u->in[iep].cableId = ( 1 << pins ) - 1;
+ if ( u->in[iep].cableId )
+ iep ++;
+ if ( iep < 15 ) {
+ u->in[iep].endpoint = -1;
+ u->in[iep].cableId = -1;
+ }
+ }
+ } else {
+ if ( oep < 15 ) {
+ pins = oep+1;
+ u->out[oep].endpoint = p1[2];
+ u->out[oep].cableId = ( 1 << pins ) - 1;
+ if ( u->out[oep].cableId )
+ oep ++;
+ if ( oep < 15 ) {
+ u->out[oep].endpoint = -1;
+ u->out[oep].cableId = -1;
+ }
+ }
+ }
+
+ }
+ }
+
+ if ( !iep && ! oep ) {
+ goto error_end;
+ }
+
+ return u;
+
+error_end:
+ kfree(u);
+ return NULL;
+}
+
+/* ------------------------------------------------------------------------- */
+
+/** Returns number between 0 and 16.
+ *
+ **/
+static int on_bits( unsigned short v )
+{
+ int i;
+ int ret=0;
+
+ for ( i=0 ; i<16 ; i++ ) {
+ if ( v & (1<<i) )
+ ret++;
+ }
+
+ return ret;
+}
+
+
+/** USB-device will be interrogated for altSetting.
+ *
+ * Returns negative on error.
+ * Called by allocUsbMidiDev();
+ *
+ **/
+
+static int get_alt_setting( struct usb_device *d, int ifnum )
+{
+ int alts, alt=0;
+ struct usb_interface *iface;
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *ep;
+ int epin, epout;
+ int i;
+
+ iface = usb_ifnum_to_if( d, ifnum );
+ alts = iface->num_altsetting;
+
+ for ( alt=0 ; alt<alts ; alt++ ) {
+ interface = &iface->altsetting[alt];
+ epin = -1;
+ epout = -1;
+
+ for ( i=0 ; i<interface->desc.bNumEndpoints ; i++ ) {
+ ep = &interface->endpoint[i].desc;
+ if ( (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ) {
+ continue;
+ }
+ if ( (ep->bEndpointAddress & USB_DIR_IN) && epin < 0 ) {
+ epin = i;
+ } else if ( epout < 0 ) {
+ epout = i;
+ }
+ if ( epin >= 0 && epout >= 0 ) {
+ return interface->desc.bAlternateSetting;
+ }
+ }
+ }
+
+ return -ENODEV;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+
+/** Returns 0 if successful in allocating and registering internal structures.
+ * Returns negative on failure.
+ * Calls allocMidiDev which additionally registers /dev/midiXX devices.
+ * Writes messages on success to indicate which /dev/midiXX is which physical
+ * endpoint.
+ *
+ **/
+static int alloc_usb_midi_device( struct usb_device *d, struct usb_midi_state *s, struct usb_midi_device *u )
+{
+ struct usb_mididev **mdevs=NULL;
+ struct midi_in_endpoint *mins[15], *min;
+ struct midi_out_endpoint *mouts[15], *mout;
+ int inDevs=0, outDevs=0;
+ int inEndpoints=0, outEndpoints=0;
+ int inEndpoint, outEndpoint;
+ int inCableId, outCableId;
+ int i;
+ int devices = 0;
+ int alt = 0;
+
+ /* Obtain altSetting or die.. */
+ alt = u->altSetting;
+ if ( alt < 0 ) {
+ alt = get_alt_setting( d, u->interface );
+ }
+ if ( alt < 0 )
+ return -ENXIO;
+
+ /* Configure interface */
+ if ( usb_set_interface( d, u->interface, alt ) < 0 ) {
+ return -ENXIO;
+ }
+
+ for ( i = 0 ; i < 15 ; i++ ) {
+ mins[i] = NULL;
+ mouts[i] = NULL;
+ }
+
+ /* Begin Allocation */
+ while( inEndpoints < 15
+ && inDevs < maxdevices
+ && u->in[inEndpoints].cableId >= 0 ) {
+ inDevs += on_bits((unsigned short)u->in[inEndpoints].cableId);
+ mins[inEndpoints] = alloc_midi_in_endpoint( d, u->in[inEndpoints].endpoint );
+ if ( mins[inEndpoints] == NULL )
+ goto error_end;
+ inEndpoints++;
+ }
+
+ while( outEndpoints < 15
+ && outDevs < maxdevices
+ && u->out[outEndpoints].cableId >= 0 ) {
+ outDevs += on_bits((unsigned short)u->out[outEndpoints].cableId);
+ mouts[outEndpoints] = alloc_midi_out_endpoint( d, u->out[outEndpoints].endpoint );
+ if ( mouts[outEndpoints] == NULL )
+ goto error_end;
+ outEndpoints++;
+ }
+
+ devices = inDevs > outDevs ? inDevs : outDevs;
+ devices = maxdevices > devices ? devices : maxdevices;
+
+ /* obtain space for device name (iProduct) if not known. */
+ if ( ! u->deviceName ) {
+ mdevs = (struct usb_mididev **)
+ kmalloc(sizeof(struct usb_mididevs *)*devices
+ + sizeof(char) * 256, GFP_KERNEL);
+ } else {
+ mdevs = (struct usb_mididev **)
+ kmalloc(sizeof(struct usb_mididevs *)*devices, GFP_KERNEL);
+ }
+
+ if ( !mdevs ) {
+ /* devices = 0; */
+ /* mdevs = NULL; */
+ goto error_end;
+ }
+ for ( i=0 ; i<devices ; i++ ) {
+ mdevs[i] = NULL;
+ }
+
+ /* obtain device name (iProduct) if not known. */
+ if ( ! u->deviceName ) {
+ u->deviceName = (char *) (mdevs + devices);
+ if ( ! d->have_langid && d->descriptor.iProduct) {
+ alt = usb_get_string(d, 0, 0, u->deviceName, 250);
+ if (alt < 0) {
+ printk(KERN_INFO "error getting string descriptor 0 (error=%d)\n", alt);
+ } else if (u->deviceName[0] < 4) {
+ printk(KERN_INFO "string descriptor 0 too short (length = %d)\n", alt);
+ } else {
+ printk(KERN_INFO "string descriptor 0 found (length = %d)\n", alt);
+ for(; alt >= 4; alt -= 2) {
+ i = u->deviceName[alt-2] | (u->deviceName[alt-1]<< 8);
+ printk(KERN_INFO "usb-midi: langid(%d) 0x%04x\n",
+ (alt-4) >> 1, i);
+ if ( ( ( i ^ ulangid ) & 0xff ) == 0 ) {
+ d->have_langid = 1;
+ d->string_langid = i;
+ printk(KERN_INFO "usb-midi: langid(match) 0x%04x\n", i);
+ if ( i == ulangid )
+ break;
+ }
+ }
+ }
+ }
+ u->deviceName[0] = (char) 0;
+ if (d->descriptor.iProduct) {
+ printk(KERN_INFO "usb-midi: fetchString(%d)\n", d->descriptor.iProduct);
+ alt = usb_string(d, d->descriptor.iProduct, u->deviceName, 255);
+ if( alt < 0 ) {
+ u->deviceName[0] = (char) 0;
+ }
+ printk(KERN_INFO "usb-midi: fetchString = %d\n", alt);
+ }
+ /* Failsafe */
+ if ( !u->deviceName[0] ) {
+ if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_ROLAND ) {
+ strcpy(u->deviceName, "Unknown Roland");
+ } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_STEINBERG ) {
+ strcpy(u->deviceName, "Unknown Steinberg");
+ } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_YAMAHA ) {
+ strcpy(u->deviceName, "Unknown Yamaha");
+ } else {
+ strcpy(u->deviceName, "Unknown");
+ }
+ }
+ }
+
+ inEndpoint = 0; inCableId = -1;
+ outEndpoint = 0; outCableId = -1;
+
+ for ( i=0 ; i<devices ; i++ ) {
+ for ( inCableId ++ ;
+ inEndpoint <15
+ && mins[inEndpoint]
+ && !(u->in[inEndpoint].cableId & (1<<inCableId)) ;
+ inCableId++ ) {
+ if ( inCableId >= 16 ) {
+ inEndpoint ++;
+ inCableId = 0;
+ }
+ }
+ min = mins[inEndpoint];
+ for ( outCableId ++ ;
+ outEndpoint <15
+ && mouts[outEndpoint]
+ && !(u->out[outEndpoint].cableId & (1<<outCableId)) ;
+ outCableId++ ) {
+ if ( outCableId >= 16 ) {
+ outEndpoint ++;
+ outCableId = 0;
+ }
+ }
+ mout = mouts[outEndpoint];
+
+ mdevs[i] = allocMidiDev( s, min, mout, inCableId, outCableId );
+ if ( mdevs[i] == NULL )
+ goto error_end;
+
+ }
+
+ /* Success! */
+ for ( i=0 ; i<devices ; i++ ) {
+ list_add_tail( &mdevs[i]->list, &s->midiDevList );
+ }
+ for ( i=0 ; i<inEndpoints ; i++ ) {
+ list_add_tail( &mins[i]->list, &s->inEndpointList );
+ }
+ for ( i=0 ; i<outEndpoints ; i++ ) {
+ list_add_tail( &mouts[i]->list, &s->outEndpointList );
+ }
+
+ printk(KERN_INFO "usbmidi: found [ %s ] (0x%04x:0x%04x), attached:\n", u->deviceName, u->idVendor, u->idProduct );
+ for ( i=0 ; i<devices ; i++ ) {
+ int dm = (mdevs[i]->dev_midi-2)>>4;
+ if ( mdevs[i]->mout.ep != NULL && mdevs[i]->min.ep != NULL ) {
+ printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%2d) out (ep:%02x cid:%2d bufsiz:%2d)\n",
+ dm,
+ mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize,
+ mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
+ } else if ( mdevs[i]->min.ep != NULL ) {
+ printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%02d)\n",
+ dm,
+ mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize);
+ } else if ( mdevs[i]->mout.ep != NULL ) {
+ printk(KERN_INFO "usbmidi: /dev/midi%02d: out (ep:%02x cid:%2d bufsiz:%02d)\n",
+ dm,
+ mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize);
+ }
+ }
+
+ kfree(mdevs);
+ return 0;
+
+ error_end:
+ if ( mdevs != NULL ) {
+ for ( i=0 ; i<devices ; i++ ) {
+ if ( mdevs[i] != NULL ) {
+ unregister_sound_midi( mdevs[i]->dev_midi );
+ kfree(mdevs[i]);
+ }
+ }
+ kfree(mdevs);
+ }
+
+ for ( i=0 ; i<15 ; i++ ) {
+ if ( mins[i] != NULL ) {
+ remove_midi_in_endpoint( mins[i] );
+ }
+ if ( mouts[i] != NULL ) {
+ remove_midi_out_endpoint( mouts[i] );
+ }
+ }
+
+ return -ENOMEM;
+}
+
+/* ------------------------------------------------------------------------- */
+
+/** Attempt to scan YAMAHA's device descriptor and detect correct values of
+ * them.
+ * Return 0 on succes, negative on failure.
+ * Called by usb_midi_probe();
+ **/
+
+static int detect_yamaha_device( struct usb_device *d,
+ struct usb_interface *iface, unsigned int ifnum,
+ struct usb_midi_state *s)
+{
+ struct usb_host_interface *interface;
+ struct usb_midi_device *u;
+ unsigned char *buffer;
+ int bufSize;
+ int i;
+ int alts=-1;
+ int ret;
+
+ if (le16_to_cpu(d->descriptor.idVendor) != USB_VENDOR_ID_YAMAHA) {
+ return -EINVAL;
+ }
+
+ for ( i=0 ; i < iface->num_altsetting; i++ ) {
+ interface = iface->altsetting + i;
+
+ if ( interface->desc.bInterfaceClass != 255 ||
+ interface->desc.bInterfaceSubClass != 0 )
+ continue;
+ alts = interface->desc.bAlternateSetting;
+ }
+ if ( alts == -1 ) {
+ return -EINVAL;
+ }
+
+ printk(KERN_INFO "usb-midi: Found YAMAHA USB-MIDI device on dev %04x:%04x, iface %d\n",
+ le16_to_cpu(d->descriptor.idVendor),
+ le16_to_cpu(d->descriptor.idProduct), ifnum);
+
+ i = d->actconfig - d->config;
+ buffer = d->rawdescriptors[i];
+ bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
+
+ u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 1);
+ if ( u == NULL ) {
+ return -EINVAL;
+ }
+
+ ret = alloc_usb_midi_device( d, s, u );
+
+ kfree(u);
+
+ return ret;
+}
+
+
+/** Scan table of known devices which are only partially compliant with
+ * the MIDIStreaming specification.
+ * Called by usb_midi_probe();
+ *
+ **/
+
+static int detect_vendor_specific_device( struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s )
+{
+ struct usb_midi_device *u;
+ int i;
+ int ret = -ENXIO;
+
+ for ( i=0; i<VENDOR_SPECIFIC_USB_MIDI_DEVICES ; i++ ) {
+ u=&(usb_midi_devices[i]);
+
+ if ( le16_to_cpu(d->descriptor.idVendor) != u->idVendor ||
+ le16_to_cpu(d->descriptor.idProduct) != u->idProduct ||
+ ifnum != u->interface )
+ continue;
+
+ ret = alloc_usb_midi_device( d, s, u );
+ break;
+ }
+
+ return ret;
+}
+
+
+/** Attempt to match any config of an interface to a MIDISTREAMING interface.
+ * Returns 0 on success, negative on failure.
+ * Called by usb_midi_probe();
+ **/
+static int detect_midi_subclass(struct usb_device *d,
+ struct usb_interface *iface, unsigned int ifnum,
+ struct usb_midi_state *s)
+{
+ struct usb_host_interface *interface;
+ struct usb_midi_device *u;
+ unsigned char *buffer;
+ int bufSize;
+ int i;
+ int alts=-1;
+ int ret;
+
+ for ( i=0 ; i < iface->num_altsetting; i++ ) {
+ interface = iface->altsetting + i;
+
+ if ( interface->desc.bInterfaceClass != USB_CLASS_AUDIO ||
+ interface->desc.bInterfaceSubClass != USB_SUBCLASS_MIDISTREAMING )
+ continue;
+ alts = interface->desc.bAlternateSetting;
+ }
+ if ( alts == -1 ) {
+ return -EINVAL;
+ }
+
+ printk(KERN_INFO "usb-midi: Found MIDISTREAMING on dev %04x:%04x, iface %d\n",
+ le16_to_cpu(d->descriptor.idVendor),
+ le16_to_cpu(d->descriptor.idProduct), ifnum);
+
+
+ /* From USB Spec v2.0, Section 9.5.
+ If the class or vendor specific descriptors use the same format
+ as standard descriptors (e.g., start with a length byte and
+ followed by a type byte), they must be returned interleaved with
+ standard descriptors in the configuration information returned by
+ a GetDescriptor(Configuration) request. In this case, the class
+ or vendor-specific descriptors must follow a related standard
+ descriptor they modify or extend.
+ */
+
+ i = d->actconfig - d->config;
+ buffer = d->rawdescriptors[i];
+ bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength);
+
+ u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 0);
+ if ( u == NULL ) {
+ return -EINVAL;
+ }
+
+ ret = alloc_usb_midi_device( d, s, u );
+
+ kfree(u);
+
+ return ret;
+}
+
+
+/** When user has requested a specific device, match it exactly.
+ *
+ * Uses uvendor, uproduct, uinterface, ualt, umin, umout and ucable.
+ * Called by usb_midi_probe();
+ *
+ **/
+static int detect_by_hand(struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s)
+{
+ struct usb_midi_device u;
+
+ if ( le16_to_cpu(d->descriptor.idVendor) != uvendor ||
+ le16_to_cpu(d->descriptor.idProduct) != uproduct ||
+ ifnum != uinterface ) {
+ return -EINVAL;
+ }
+
+ if ( ualt < 0 )
+ ualt = -1;
+
+ if ( umin < 0 || umin > 15 )
+ umin = 0x01 | USB_DIR_IN;
+ if ( umout < 0 || umout > 15 )
+ umout = 0x01;
+ if ( ucable < 0 || ucable > 15 )
+ ucable = 0;
+
+ u.deviceName = NULL; /* A flag for alloc_usb_midi_device to get device
+ name from device. */
+ u.idVendor = uvendor;
+ u.idProduct = uproduct;
+ u.interface = uinterface;
+ u.altSetting = ualt;
+
+ u.in[0].endpoint = umin;
+ u.in[0].cableId = (1<<ucable);
+
+ u.out[0].endpoint = umout;
+ u.out[0].cableId = (1<<ucable);
+
+ return alloc_usb_midi_device( d, s, &u );
+}
+
+
+
+/* ------------------------------------------------------------------------- */
+
+static int usb_midi_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_midi_state *s;
+ struct usb_device *dev = interface_to_usbdev(intf);
+ int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
+
+ s = (struct usb_midi_state *)kmalloc(sizeof(struct usb_midi_state), GFP_KERNEL);
+ if ( !s )
+ return -ENOMEM;
+
+ memset( s, 0, sizeof(struct usb_midi_state) );
+ INIT_LIST_HEAD(&s->midiDevList);
+ INIT_LIST_HEAD(&s->inEndpointList);
+ INIT_LIST_HEAD(&s->outEndpointList);
+ s->usbdev = dev;
+ s->count = 0;
+ spin_lock_init(&s->lock);
+
+ if (
+ detect_by_hand( dev, ifnum, s ) &&
+ detect_midi_subclass( dev, intf, ifnum, s ) &&
+ detect_vendor_specific_device( dev, ifnum, s ) &&
+ detect_yamaha_device( dev, intf, ifnum, s) ) {
+ kfree(s);
+ return -EIO;
+ }
+
+ down(&open_sem);
+ list_add_tail(&s->mididev, &mididevs);
+ up(&open_sem);
+
+ usb_set_intfdata (intf, s);
+ return 0;
+}
+
+
+static void usb_midi_disconnect(struct usb_interface *intf)
+{
+ struct usb_midi_state *s = usb_get_intfdata (intf);
+ struct usb_mididev *m;
+
+ if ( !s )
+ return;
+
+ if ( s == (struct usb_midi_state *)-1 ) {
+ return;
+ }
+ if ( !s->usbdev ) {
+ return;
+ }
+ down(&open_sem);
+ list_del(&s->mididev);
+ INIT_LIST_HEAD(&s->mididev);
+ s->usbdev = NULL;
+ usb_set_intfdata (intf, NULL);
+
+ list_for_each_entry(m, &s->midiDevList, list) {
+ wake_up(&(m->min.ep->wait));
+ wake_up(&(m->mout.ep->wait));
+ if ( m->dev_midi >= 0 ) {
+ unregister_sound_midi(m->dev_midi);
+ }
+ m->dev_midi = -1;
+ }
+ release_midi_device(s);
+ wake_up(&open_wait);
+}
+
+/* we want to look at all devices by hand */
+static struct usb_device_id id_table[] = {
+ {.driver_info = 42},
+ {}
+};
+
+static struct usb_driver usb_midi_driver = {
+ .owner = THIS_MODULE,
+ .name = "midi",
+ .probe = usb_midi_probe,
+ .disconnect = usb_midi_disconnect,
+ .id_table = id_table,
+};
+
+/* ------------------------------------------------------------------------- */
+
+static int __init usb_midi_init(void)
+{
+ return usb_register(&usb_midi_driver);
+}
+
+static void __exit usb_midi_exit(void)
+{
+ usb_deregister(&usb_midi_driver);
+}
+
+module_init(usb_midi_init) ;
+module_exit(usb_midi_exit) ;
+
+#ifdef HAVE_ALSA_SUPPORT
+#define SNDRV_MAIN_OBJECT_FILE
+#include "../../include/driver.h"
+#include "../../include/control.h"
+#include "../../include/info.h"
+#include "../../include/cs46xx.h"
+
+/* ------------------------------------------------------------------------- */
+
+static int snd_usbmidi_input_close(snd_rawmidi_substream_t * substream)
+{
+ return 0;
+}
+
+static int snd_usbmidi_input_open(snd_rawmidi_substream_t * substream )
+{
+ return 0;
+}
+
+static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+ return 0;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+static int snd_usbmidi_output_close(snd_rawmidi_substream_t * substream)
+{
+ return 0;
+}
+
+static int snd_usbmidi_output_open(snd_rawmidi_substream_t * substream)
+{
+ return 0;
+}
+
+static void snd_usb_midi_output_trigger(snd_rawmidi_substream_t * substream,
+ int up)
+{
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static snd_rawmidi_ops_t snd_usbmidi_output =
+{
+ .open = snd_usbmidi_output_open,
+ .close = snd_usbmidi_output_close,
+ .trigger = snd_usbmidi_output_trigger,
+};
+static snd_rawmidi_ops_t snd_usbmidi_input =
+{
+ .open = snd_usbmidi_input_open,
+ .close = snd_usbmidi_input_close,
+ .trigger = snd_usbmidi_input_trigger,
+};
+
+int snd_usbmidi_midi(cs46xx_t *chip, int device, snd_rawmidi_t **rrawmidi)
+{
+ snd_rawmidi_t *rmidi;
+ int err;
+
+ if (rrawmidi)
+ *rrawmidi = NULL;
+ if ((err = snd_rawmidi_new(chip->card, "USB-MIDI", device, 1, 1, &rmidi)) < 0)
+ return err;
+ strcpy(rmidi->name, "USB-MIDI");
+
+ snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output );
+ snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input );
+
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
+
+ rmidi->private_data = chip;
+ chip->rmidi = rmidi;
+ if (rrawmidi)
+ *rrawmidi = NULL;
+
+ return 0;
+}
+
+int snd_usbmidi_create( snd_card_t * card,
+ struct pci_dev * pci,
+ usbmidi_t ** rchip )
+{
+ usbmidi_t *chip;
+ int err, idx;
+ snd_region_t *region;
+ static snd_device_opt_t ops = {
+ .dev_free = snd_usbmidi_dev_free,
+ };
+
+ *rchip = NULL;
+ chip = snd_magic_kcalloc( usbmidi_t, 0, GFP_KERNEL );
+ if ( chip == NULL )
+ return -ENOMEM;
+}
+
+EXPORT_SYMBOL(snd_usbmidi_create);
+EXPORT_SYMBOL(snd_usbmidi_midi);
+#endif /* HAVE_ALSA_SUPPORT */
+
diff --git a/drivers/usb/class/usb-midi.h b/drivers/usb/class/usb-midi.h
new file mode 100644
index 0000000..358cdef
--- /dev/null
+++ b/drivers/usb/class/usb-midi.h
@@ -0,0 +1,164 @@
+/*
+ usb-midi.h -- USB-MIDI driver
+
+ Copyright (C) 2001
+ NAGANO Daisuke <breeze.nagano@nifty.ne.jp>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* ------------------------------------------------------------------------- */
+
+#ifndef _USB_MIDI_H_
+#define _USB_MIDI_H_
+
+#ifndef USB_SUBCLASS_MIDISTREAMING
+#define USB_SUBCLASS_MIDISTREAMING 3
+#endif
+
+/* ------------------------------------------------------------------------- */
+/* Roland MIDI Devices */
+
+#define USB_VENDOR_ID_ROLAND 0x0582
+#define USBMIDI_ROLAND_UA100G 0x0000
+#define USBMIDI_ROLAND_MPU64 0x0002
+#define USBMIDI_ROLAND_SC8850 0x0003
+#define USBMIDI_ROLAND_SC8820 0x0007
+#define USBMIDI_ROLAND_UM2 0x0005
+#define USBMIDI_ROLAND_UM1 0x0009
+#define USBMIDI_ROLAND_PC300 0x0008
+
+/* YAMAHA MIDI Devices */
+#define USB_VENDOR_ID_YAMAHA 0x0499
+#define USBMIDI_YAMAHA_MU1000 0x1001
+
+/* Steinberg MIDI Devices */
+#define USB_VENDOR_ID_STEINBERG 0x0763
+#define USBMIDI_STEINBERG_USB2MIDI 0x1001
+
+/* Mark of the Unicorn MIDI Devices */
+#define USB_VENDOR_ID_MOTU 0x07fd
+#define USBMIDI_MOTU_FASTLANE 0x0001
+
+/* ------------------------------------------------------------------------- */
+/* Supported devices */
+
+struct usb_midi_endpoint {
+ int endpoint;
+ int cableId; /* if bit-n == 1 then cableId-n is enabled (n: 0 - 15) */
+};
+
+struct usb_midi_device {
+ char *deviceName;
+
+ u16 idVendor;
+ u16 idProduct;
+ int interface;
+ int altSetting; /* -1: auto detect */
+
+ struct usb_midi_endpoint in[15];
+ struct usb_midi_endpoint out[15];
+};
+
+static struct usb_midi_device usb_midi_devices[] = {
+ { /* Roland UM-1 */
+ "Roland UM-1",
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM1, 2, -1,
+ { { 0x81, 1 }, {-1, -1} },
+ { { 0x01, 1,}, {-1, -1} },
+ },
+
+ { /* Roland UM-2 */
+ "Roland UM-2" ,
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM2, 2, -1,
+ { { 0x81, 3 }, {-1, -1} },
+ { { 0x01, 3,}, {-1, -1} },
+ },
+
+/** Next entry courtesy research by Michael Minn <michael@michaelminn.com> **/
+ { /* Roland UA-100 */
+ "Roland UA-100",
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UA100G, 2, -1,
+ { { 0x82, 7 }, {-1, -1} }, /** cables 0,1 and 2 for SYSEX **/
+ { { 0x02, 7 }, {-1, -1} },
+ },
+
+/** Next entry courtesy research by Michael Minn <michael@michaelminn.com> **/
+ { /* Roland SC8850 */
+ "Roland SC8850",
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8850, 2, -1,
+ { { 0x81, 0x3f }, {-1, -1} },
+ { { 0x01, 0x3f }, {-1, -1} },
+ },
+
+ { /* Roland SC8820 */
+ "Roland SC8820",
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820, 2, -1,
+ { { 0x81, 0x13 }, {-1, -1} },
+ { { 0x01, 0x13 }, {-1, -1} },
+ },
+
+ { /* Roland SC8820 */
+ "Roland SC8820",
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820, 2, -1,
+ { { 0x81, 17 }, {-1, -1} },
+ { { 0x01, 17 }, {-1, -1} },
+ },
+
+ { /* YAMAHA MU1000 */
+ "YAMAHA MU1000",
+ USB_VENDOR_ID_YAMAHA, USBMIDI_YAMAHA_MU1000, 0, -1,
+ { { 0x81, 1 }, {-1, -1} },
+ { { 0x01, 15 }, {-1, -1} },
+ },
+ { /* Roland PC-300 */
+ "Roland PC-300",
+ USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_PC300, 2, -1,
+ { { 0x81, 1 }, {-1, -1} },
+ { { 0x01, 1 }, {-1, -1} },
+ },
+ { /* MOTU Fastlane USB */
+ "MOTU Fastlane USB",
+ USB_VENDOR_ID_MOTU, USBMIDI_MOTU_FASTLANE, 1, 0,
+ { { 0x82, 3 }, {-1, -1} },
+ { { 0x02, 3 }, {-1, -1} },
+ }
+};
+
+#define VENDOR_SPECIFIC_USB_MIDI_DEVICES (sizeof(usb_midi_devices)/sizeof(struct usb_midi_device))
+
+/* for Hot-Plugging */
+
+static struct usb_device_id usb_midi_ids [] = {
+ { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
+ .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING},
+ { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM1 ) },
+ { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UM2 ) },
+ { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_UA100G ) },
+ { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_PC300 ) },
+ { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8850 ) },
+ { USB_DEVICE( USB_VENDOR_ID_ROLAND, USBMIDI_ROLAND_SC8820 ) },
+ { USB_DEVICE( USB_VENDOR_ID_YAMAHA, USBMIDI_YAMAHA_MU1000 ) },
+ { USB_DEVICE( USB_VENDOR_ID_MOTU, USBMIDI_MOTU_FASTLANE ) },
+/* { USB_DEVICE( USB_VENDOR_ID_STEINBERG, USBMIDI_STEINBERG_USB2MIDI ) },*/
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usb_midi_ids);
+
+/* ------------------------------------------------------------------------- */
+#endif /* _USB_MIDI_H_ */
+
+
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
new file mode 100644
index 0000000..bba22e9
--- /dev/null
+++ b/drivers/usb/class/usblp.c
@@ -0,0 +1,1214 @@
+/*
+ * usblp.c Version 0.13
+ *
+ * Copyright (c) 1999 Michael Gee <michael@linuxspecific.com>
+ * Copyright (c) 1999 Pavel Machek <pavel@suse.cz>
+ * Copyright (c) 2000 Randy Dunlap <rddunlap@osdl.org>
+ * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz>
+ # Copyright (c) 2001 Pete Zaitcev <zaitcev@redhat.com>
+ # Copyright (c) 2001 David Paschal <paschal@rcsis.com>
+ *
+ * USB Printer Device Class driver for USB printers and printer cables
+ *
+ * Sponsored by SuSE
+ *
+ * ChangeLog:
+ * v0.1 - thorough cleaning, URBification, almost a rewrite
+ * v0.2 - some more cleanups
+ * v0.3 - cleaner again, waitqueue fixes
+ * v0.4 - fixes in unidirectional mode
+ * v0.5 - add DEVICE_ID string support
+ * v0.6 - never time out
+ * v0.7 - fixed bulk-IN read and poll (David Paschal)
+ * v0.8 - add devfs support
+ * v0.9 - fix unplug-while-open paths
+ * v0.10- remove sleep_on, fix error on oom (oliver@neukum.org)
+ * v0.11 - add proto_bias option (Pete Zaitcev)
+ * v0.12 - add hpoj.sourceforge.net ioctls (David Paschal)
+ * v0.13 - alloc space for statusbuf (<status> not on stack);
+ * use usb_buffer_alloc() for read buf & write buf;
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/signal.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/lp.h>
+#undef DEBUG
+#include <linux/usb.h>
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.13"
+#define DRIVER_AUTHOR "Michael Gee, Pavel Machek, Vojtech Pavlik, Randy Dunlap, Pete Zaitcev, David Paschal"
+#define DRIVER_DESC "USB Printer Device Class driver"
+
+#define USBLP_BUF_SIZE 8192
+#define USBLP_DEVICE_ID_SIZE 1024
+
+/* ioctls: */
+#define LPGETSTATUS 0x060b /* same as in drivers/char/lp.c */
+#define IOCNR_GET_DEVICE_ID 1
+#define IOCNR_GET_PROTOCOLS 2
+#define IOCNR_SET_PROTOCOL 3
+#define IOCNR_HP_SET_CHANNEL 4
+#define IOCNR_GET_BUS_ADDRESS 5
+#define IOCNR_GET_VID_PID 6
+#define IOCNR_SOFT_RESET 7
+/* Get device_id string: */
+#define LPIOC_GET_DEVICE_ID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, len)
+/* The following ioctls were added for http://hpoj.sourceforge.net: */
+/* Get two-int array:
+ * [0]=current protocol (1=7/1/1, 2=7/1/2, 3=7/1/3),
+ * [1]=supported protocol mask (mask&(1<<n)!=0 means 7/1/n supported): */
+#define LPIOC_GET_PROTOCOLS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_PROTOCOLS, len)
+/* Set protocol (arg: 1=7/1/1, 2=7/1/2, 3=7/1/3): */
+#define LPIOC_SET_PROTOCOL _IOC(_IOC_WRITE, 'P', IOCNR_SET_PROTOCOL, 0)
+/* Set channel number (HP Vendor-specific command): */
+#define LPIOC_HP_SET_CHANNEL _IOC(_IOC_WRITE, 'P', IOCNR_HP_SET_CHANNEL, 0)
+/* Get two-int array: [0]=bus number, [1]=device address: */
+#define LPIOC_GET_BUS_ADDRESS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_BUS_ADDRESS, len)
+/* Get two-int array: [0]=vendor ID, [1]=product ID: */
+#define LPIOC_GET_VID_PID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_VID_PID, len)
+/* Perform class specific soft reset */
+#define LPIOC_SOFT_RESET _IOC(_IOC_NONE, 'P', IOCNR_SOFT_RESET, 0);
+
+/*
+ * A DEVICE_ID string may include the printer's serial number.
+ * It should end with a semi-colon (';').
+ * An example from an HP 970C DeskJet printer is (this is one long string,
+ * with the serial number changed):
+MFG:HEWLETT-PACKARD;MDL:DESKJET 970C;CMD:MLC,PCL,PML;CLASS:PRINTER;DESCRIPTION:Hewlett-Packard DeskJet 970C;SERN:US970CSEPROF;VSTATUS:$HB0$NC0,ff,DN,IDLE,CUT,K1,C0,DP,NR,KP000,CP027;VP:0800,FL,B0;VJ: ;
+ */
+
+/*
+ * USB Printer Requests
+ */
+
+#define USBLP_REQ_GET_ID 0x00
+#define USBLP_REQ_GET_STATUS 0x01
+#define USBLP_REQ_RESET 0x02
+#define USBLP_REQ_HP_CHANNEL_CHANGE_REQUEST 0x00 /* HP Vendor-specific */
+
+#define USBLP_MINORS 16
+#define USBLP_MINOR_BASE 0
+
+#define USBLP_WRITE_TIMEOUT (5000) /* 5 seconds */
+
+#define USBLP_FIRST_PROTOCOL 1
+#define USBLP_LAST_PROTOCOL 3
+#define USBLP_MAX_PROTOCOLS (USBLP_LAST_PROTOCOL+1)
+
+/*
+ * some arbitrary status buffer size;
+ * need a status buffer that is allocated via kmalloc(), not on stack
+ */
+#define STATUS_BUF_SIZE 8
+
+struct usblp {
+ struct usb_device *dev; /* USB device */
+ struct semaphore sem; /* locks this struct, especially "dev" */
+ char *writebuf; /* write transfer_buffer */
+ char *readbuf; /* read transfer_buffer */
+ char *statusbuf; /* status transfer_buffer */
+ struct urb *readurb, *writeurb; /* The urbs */
+ wait_queue_head_t wait; /* Zzzzz ... */
+ int readcount; /* Counter for reads */
+ int ifnum; /* Interface number */
+ struct usb_interface *intf; /* The interface */
+ /* Alternate-setting numbers and endpoints for each protocol
+ * (7/1/{index=1,2,3}) that the device supports: */
+ struct {
+ int alt_setting;
+ struct usb_endpoint_descriptor *epwrite;
+ struct usb_endpoint_descriptor *epread;
+ } protocol[USBLP_MAX_PROTOCOLS];
+ int current_protocol;
+ int minor; /* minor number of device */
+ int wcomplete; /* writing is completed */
+ int rcomplete; /* reading is completed */
+ unsigned int quirks; /* quirks flags */
+ unsigned char used; /* True if open */
+ unsigned char present; /* True if not disconnected */
+ unsigned char bidir; /* interface is bidirectional */
+ unsigned char *device_id_string; /* IEEE 1284 DEVICE ID string (ptr) */
+ /* first 2 bytes are (big-endian) length */
+};
+
+#ifdef DEBUG
+static void usblp_dump(struct usblp *usblp) {
+ int p;
+
+ dbg("usblp=0x%p", usblp);
+ dbg("dev=0x%p", usblp->dev);
+ dbg("present=%d", usblp->present);
+ dbg("readbuf=0x%p", usblp->readbuf);
+ dbg("writebuf=0x%p", usblp->writebuf);
+ dbg("readurb=0x%p", usblp->readurb);
+ dbg("writeurb=0x%p", usblp->writeurb);
+ dbg("readcount=%d", usblp->readcount);
+ dbg("ifnum=%d", usblp->ifnum);
+ for (p = USBLP_FIRST_PROTOCOL; p <= USBLP_LAST_PROTOCOL; p++) {
+ dbg("protocol[%d].alt_setting=%d", p, usblp->protocol[p].alt_setting);
+ dbg("protocol[%d].epwrite=%p", p, usblp->protocol[p].epwrite);
+ dbg("protocol[%d].epread=%p", p, usblp->protocol[p].epread);
+ }
+ dbg("current_protocol=%d", usblp->current_protocol);
+ dbg("minor=%d", usblp->minor);
+ dbg("wcomplete=%d", usblp->wcomplete);
+ dbg("rcomplete=%d", usblp->rcomplete);
+ dbg("quirks=%d", usblp->quirks);
+ dbg("used=%d", usblp->used);
+ dbg("bidir=%d", usblp->bidir);
+ dbg("device_id_string=\"%s\"",
+ usblp->device_id_string ?
+ usblp->device_id_string + 2 :
+ (unsigned char *)"(null)");
+}
+#endif
+
+/* Quirks: various printer quirks are handled by this table & its flags. */
+
+struct quirk_printer_struct {
+ __u16 vendorId;
+ __u16 productId;
+ unsigned int quirks;
+};
+
+#define USBLP_QUIRK_BIDIR 0x1 /* reports bidir but requires unidirectional mode (no INs/reads) */
+#define USBLP_QUIRK_USB_INIT 0x2 /* needs vendor USB init string */
+
+static struct quirk_printer_struct quirk_printers[] = {
+ { 0x03f0, 0x0004, USBLP_QUIRK_BIDIR }, /* HP DeskJet 895C */
+ { 0x03f0, 0x0104, USBLP_QUIRK_BIDIR }, /* HP DeskJet 880C */
+ { 0x03f0, 0x0204, USBLP_QUIRK_BIDIR }, /* HP DeskJet 815C */
+ { 0x03f0, 0x0304, USBLP_QUIRK_BIDIR }, /* HP DeskJet 810C/812C */
+ { 0x03f0, 0x0404, USBLP_QUIRK_BIDIR }, /* HP DeskJet 830C */
+ { 0x03f0, 0x0504, USBLP_QUIRK_BIDIR }, /* HP DeskJet 885C */
+ { 0x03f0, 0x0604, USBLP_QUIRK_BIDIR }, /* HP DeskJet 840C */
+ { 0x03f0, 0x0804, USBLP_QUIRK_BIDIR }, /* HP DeskJet 816C */
+ { 0x03f0, 0x1104, USBLP_QUIRK_BIDIR }, /* HP Deskjet 959C */
+ { 0x0409, 0xefbe, USBLP_QUIRK_BIDIR }, /* NEC Picty900 (HP OEM) */
+ { 0x0409, 0xbef4, USBLP_QUIRK_BIDIR }, /* NEC Picty760 (HP OEM) */
+ { 0x0409, 0xf0be, USBLP_QUIRK_BIDIR }, /* NEC Picty920 (HP OEM) */
+ { 0x0409, 0xf1be, USBLP_QUIRK_BIDIR }, /* NEC Picty800 (HP OEM) */
+ { 0, 0 }
+};
+
+static int usblp_select_alts(struct usblp *usblp);
+static int usblp_set_protocol(struct usblp *usblp, int protocol);
+static int usblp_cache_device_id_string(struct usblp *usblp);
+
+/* forward reference to make our lives easier */
+static struct usb_driver usblp_driver;
+static DECLARE_MUTEX(usblp_sem); /* locks the existence of usblp's */
+
+/*
+ * Functions for usblp control messages.
+ */
+
+static int usblp_ctrl_msg(struct usblp *usblp, int request, int type, int dir, int recip, int value, void *buf, int len)
+{
+ int retval;
+ int index = usblp->ifnum;
+
+ /* High byte has the interface index.
+ Low byte has the alternate setting.
+ */
+ if ((request == USBLP_REQ_GET_ID) && (type == USB_TYPE_CLASS)) {
+ index = (usblp->ifnum<<8)|usblp->protocol[usblp->current_protocol].alt_setting;
+ }
+
+ retval = usb_control_msg(usblp->dev,
+ dir ? usb_rcvctrlpipe(usblp->dev, 0) : usb_sndctrlpipe(usblp->dev, 0),
+ request, type | dir | recip, value, index, buf, len, USBLP_WRITE_TIMEOUT);
+ dbg("usblp_control_msg: rq: 0x%02x dir: %d recip: %d value: %d idx: %d len: %#x result: %d",
+ request, !!dir, recip, value, index, len, retval);
+ return retval < 0 ? retval : 0;
+}
+
+#define usblp_read_status(usblp, status)\
+ usblp_ctrl_msg(usblp, USBLP_REQ_GET_STATUS, USB_TYPE_CLASS, USB_DIR_IN, USB_RECIP_INTERFACE, 0, status, 1)
+#define usblp_get_id(usblp, config, id, maxlen)\
+ usblp_ctrl_msg(usblp, USBLP_REQ_GET_ID, USB_TYPE_CLASS, USB_DIR_IN, USB_RECIP_INTERFACE, config, id, maxlen)
+#define usblp_reset(usblp)\
+ usblp_ctrl_msg(usblp, USBLP_REQ_RESET, USB_TYPE_CLASS, USB_DIR_OUT, USB_RECIP_OTHER, 0, NULL, 0)
+
+#define usblp_hp_channel_change_request(usblp, channel, buffer) \
+ usblp_ctrl_msg(usblp, USBLP_REQ_HP_CHANNEL_CHANGE_REQUEST, USB_TYPE_VENDOR, USB_DIR_IN, USB_RECIP_INTERFACE, channel, buffer, 1)
+
+/*
+ * See the description for usblp_select_alts() below for the usage
+ * explanation. Look into your /proc/bus/usb/devices and dmesg in
+ * case of any trouble.
+ */
+static int proto_bias = -1;
+
+/*
+ * URB callback.
+ */
+
+static void usblp_bulk_read(struct urb *urb, struct pt_regs *regs)
+{
+ struct usblp *usblp = urb->context;
+
+ if (!usblp || !usblp->dev || !usblp->used || !usblp->present)
+ return;
+
+ if (unlikely(urb->status))
+ warn("usblp%d: nonzero read/write bulk status received: %d",
+ usblp->minor, urb->status);
+ usblp->rcomplete = 1;
+ wake_up_interruptible(&usblp->wait);
+}
+
+static void usblp_bulk_write(struct urb *urb, struct pt_regs *regs)
+{
+ struct usblp *usblp = urb->context;
+
+ if (!usblp || !usblp->dev || !usblp->used || !usblp->present)
+ return;
+
+ if (unlikely(urb->status))
+ warn("usblp%d: nonzero read/write bulk status received: %d",
+ usblp->minor, urb->status);
+ usblp->wcomplete = 1;
+ wake_up_interruptible(&usblp->wait);
+}
+
+/*
+ * Get and print printer errors.
+ */
+
+static char *usblp_messages[] = { "ok", "out of paper", "off-line", "on fire" };
+
+static int usblp_check_status(struct usblp *usblp, int err)
+{
+ unsigned char status, newerr = 0;
+ int error;
+
+ error = usblp_read_status (usblp, usblp->statusbuf);
+ if (error < 0) {
+ err("usblp%d: error %d reading printer status",
+ usblp->minor, error);
+ return 0;
+ }
+
+ status = *usblp->statusbuf;
+
+ if (~status & LP_PERRORP)
+ newerr = 3;
+ if (status & LP_POUTPA)
+ newerr = 1;
+ if (~status & LP_PSELECD)
+ newerr = 2;
+
+ if (newerr != err)
+ info("usblp%d: %s", usblp->minor, usblp_messages[newerr]);
+
+ return newerr;
+}
+
+/*
+ * File op functions.
+ */
+
+static int usblp_open(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ struct usblp *usblp;
+ struct usb_interface *intf;
+ int retval;
+
+ if (minor < 0)
+ return -ENODEV;
+
+ down (&usblp_sem);
+
+ retval = -ENODEV;
+ intf = usb_find_interface(&usblp_driver, minor);
+ if (!intf) {
+ goto out;
+ }
+ usblp = usb_get_intfdata (intf);
+ if (!usblp || !usblp->dev || !usblp->present)
+ goto out;
+
+ retval = -EBUSY;
+ if (usblp->used)
+ goto out;
+
+ /*
+ * TODO: need to implement LP_ABORTOPEN + O_NONBLOCK as in drivers/char/lp.c ???
+ * This is #if 0-ed because we *don't* want to fail an open
+ * just because the printer is off-line.
+ */
+#if 0
+ if ((retval = usblp_check_status(usblp, 0))) {
+ retval = retval > 1 ? -EIO : -ENOSPC;
+ goto out;
+ }
+#else
+ retval = 0;
+#endif
+
+ usblp->used = 1;
+ file->private_data = usblp;
+
+ usblp->writeurb->transfer_buffer_length = 0;
+ usblp->wcomplete = 1; /* we begin writeable */
+ usblp->rcomplete = 0;
+
+ if (usblp->bidir) {
+ usblp->readcount = 0;
+ usblp->readurb->dev = usblp->dev;
+ if (usb_submit_urb(usblp->readurb, GFP_KERNEL) < 0) {
+ retval = -EIO;
+ usblp->used = 0;
+ file->private_data = NULL;
+ }
+ }
+out:
+ up (&usblp_sem);
+ return retval;
+}
+
+static void usblp_cleanup (struct usblp *usblp)
+{
+ info("usblp%d: removed", usblp->minor);
+
+ kfree (usblp->device_id_string);
+ kfree (usblp->statusbuf);
+ usb_free_urb(usblp->writeurb);
+ usb_free_urb(usblp->readurb);
+ kfree (usblp);
+}
+
+static void usblp_unlink_urbs(struct usblp *usblp)
+{
+ usb_kill_urb(usblp->writeurb);
+ if (usblp->bidir)
+ usb_kill_urb(usblp->readurb);
+}
+
+static int usblp_release(struct inode *inode, struct file *file)
+{
+ struct usblp *usblp = file->private_data;
+
+ down (&usblp_sem);
+ usblp->used = 0;
+ if (usblp->present) {
+ usblp_unlink_urbs(usblp);
+ } else /* finish cleanup from disconnect */
+ usblp_cleanup (usblp);
+ up (&usblp_sem);
+ return 0;
+}
+
+/* No kernel lock - fine */
+static unsigned int usblp_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct usblp *usblp = file->private_data;
+ poll_wait(file, &usblp->wait, wait);
+ return ((!usblp->bidir || !usblp->rcomplete) ? 0 : POLLIN | POLLRDNORM)
+ | (!usblp->wcomplete ? 0 : POLLOUT | POLLWRNORM);
+}
+
+static int usblp_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct usblp *usblp = file->private_data;
+ int length, err, i;
+ unsigned char newChannel;
+ int status;
+ int twoints[2];
+ int retval = 0;
+
+ down (&usblp->sem);
+ if (!usblp->present) {
+ retval = -ENODEV;
+ goto done;
+ }
+
+ dbg("usblp_ioctl: cmd=0x%x (%c nr=%d len=%d dir=%d)", cmd, _IOC_TYPE(cmd),
+ _IOC_NR(cmd), _IOC_SIZE(cmd), _IOC_DIR(cmd) );
+
+ if (_IOC_TYPE(cmd) == 'P') /* new-style ioctl number */
+
+ switch (_IOC_NR(cmd)) {
+
+ case IOCNR_GET_DEVICE_ID: /* get the DEVICE_ID string */
+ if (_IOC_DIR(cmd) != _IOC_READ) {
+ retval = -EINVAL;
+ goto done;
+ }
+
+ length = usblp_cache_device_id_string(usblp);
+ if (length < 0) {
+ retval = length;
+ goto done;
+ }
+ if (length > _IOC_SIZE(cmd))
+ length = _IOC_SIZE(cmd); /* truncate */
+
+ if (copy_to_user((void __user *) arg,
+ usblp->device_id_string,
+ (unsigned long) length)) {
+ retval = -EFAULT;
+ goto done;
+ }
+
+ break;
+
+ case IOCNR_GET_PROTOCOLS:
+ if (_IOC_DIR(cmd) != _IOC_READ ||
+ _IOC_SIZE(cmd) < sizeof(twoints)) {
+ retval = -EINVAL;
+ goto done;
+ }
+
+ twoints[0] = usblp->current_protocol;
+ twoints[1] = 0;
+ for (i = USBLP_FIRST_PROTOCOL;
+ i <= USBLP_LAST_PROTOCOL; i++) {
+ if (usblp->protocol[i].alt_setting >= 0)
+ twoints[1] |= (1<<i);
+ }
+
+ if (copy_to_user((void __user *)arg,
+ (unsigned char *)twoints,
+ sizeof(twoints))) {
+ retval = -EFAULT;
+ goto done;
+ }
+
+ break;
+
+ case IOCNR_SET_PROTOCOL:
+ if (_IOC_DIR(cmd) != _IOC_WRITE) {
+ retval = -EINVAL;
+ goto done;
+ }
+
+#ifdef DEBUG
+ if (arg == -10) {
+ usblp_dump(usblp);
+ break;
+ }
+#endif
+
+ usblp_unlink_urbs(usblp);
+ retval = usblp_set_protocol(usblp, arg);
+ if (retval < 0) {
+ usblp_set_protocol(usblp,
+ usblp->current_protocol);
+ }
+ break;
+
+ case IOCNR_HP_SET_CHANNEL:
+ if (_IOC_DIR(cmd) != _IOC_WRITE ||
+ le16_to_cpu(usblp->dev->descriptor.idVendor) != 0x03F0 ||
+ usblp->quirks & USBLP_QUIRK_BIDIR) {
+ retval = -EINVAL;
+ goto done;
+ }
+
+ err = usblp_hp_channel_change_request(usblp,
+ arg, &newChannel);
+ if (err < 0) {
+ err("usblp%d: error = %d setting "
+ "HP channel",
+ usblp->minor, err);
+ retval = -EIO;
+ goto done;
+ }
+
+ dbg("usblp%d requested/got HP channel %ld/%d",
+ usblp->minor, arg, newChannel);
+ break;
+
+ case IOCNR_GET_BUS_ADDRESS:
+ if (_IOC_DIR(cmd) != _IOC_READ ||
+ _IOC_SIZE(cmd) < sizeof(twoints)) {
+ retval = -EINVAL;
+ goto done;
+ }
+
+ twoints[0] = usblp->dev->bus->busnum;
+ twoints[1] = usblp->dev->devnum;
+ if (copy_to_user((void __user *)arg,
+ (unsigned char *)twoints,
+ sizeof(twoints))) {
+ retval = -EFAULT;
+ goto done;
+ }
+
+ dbg("usblp%d is bus=%d, device=%d",
+ usblp->minor, twoints[0], twoints[1]);
+ break;
+
+ case IOCNR_GET_VID_PID:
+ if (_IOC_DIR(cmd) != _IOC_READ ||
+ _IOC_SIZE(cmd) < sizeof(twoints)) {
+ retval = -EINVAL;
+ goto done;
+ }
+
+ twoints[0] = le16_to_cpu(usblp->dev->descriptor.idVendor);
+ twoints[1] = le16_to_cpu(usblp->dev->descriptor.idProduct);
+ if (copy_to_user((void __user *)arg,
+ (unsigned char *)twoints,
+ sizeof(twoints))) {
+ retval = -EFAULT;
+ goto done;
+ }
+
+ dbg("usblp%d is VID=0x%4.4X, PID=0x%4.4X",
+ usblp->minor, twoints[0], twoints[1]);
+ break;
+
+ case IOCNR_SOFT_RESET:
+ if (_IOC_DIR(cmd) != _IOC_NONE) {
+ retval = -EINVAL;
+ goto done;
+ }
+ retval = usblp_reset(usblp);
+ break;
+ default:
+ retval = -ENOTTY;
+ }
+ else /* old-style ioctl value */
+ switch (cmd) {
+
+ case LPGETSTATUS:
+ if (usblp_read_status(usblp, usblp->statusbuf)) {
+ err("usblp%d: failed reading printer status", usblp->minor);
+ retval = -EIO;
+ goto done;
+ }
+ status = *usblp->statusbuf;
+ if (copy_to_user ((void __user *)arg, &status, sizeof(int)))
+ retval = -EFAULT;
+ break;
+
+ default:
+ retval = -ENOTTY;
+ }
+
+done:
+ up (&usblp->sem);
+ return retval;
+}
+
+static ssize_t usblp_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ struct usblp *usblp = file->private_data;
+ int timeout, err = 0, transfer_length = 0;
+ size_t writecount = 0;
+
+ while (writecount < count) {
+ if (!usblp->wcomplete) {
+ barrier();
+ if (file->f_flags & O_NONBLOCK) {
+ writecount += transfer_length;
+ return writecount ? writecount : -EAGAIN;
+ }
+
+ timeout = USBLP_WRITE_TIMEOUT;
+ add_wait_queue(&usblp->wait, &wait);
+ while ( 1==1 ) {
+
+ if (signal_pending(current)) {
+ remove_wait_queue(&usblp->wait, &wait);
+ return writecount ? writecount : -EINTR;
+ }
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (timeout && !usblp->wcomplete) {
+ timeout = schedule_timeout(timeout);
+ } else {
+ set_current_state(TASK_RUNNING);
+ break;
+ }
+ }
+ remove_wait_queue(&usblp->wait, &wait);
+ }
+
+ down (&usblp->sem);
+ if (!usblp->present) {
+ up (&usblp->sem);
+ return -ENODEV;
+ }
+
+ if (usblp->writeurb->status != 0) {
+ if (usblp->quirks & USBLP_QUIRK_BIDIR) {
+ if (!usblp->wcomplete)
+ err("usblp%d: error %d writing to printer",
+ usblp->minor, usblp->writeurb->status);
+ err = usblp->writeurb->status;
+ } else
+ err = usblp_check_status(usblp, err);
+ up (&usblp->sem);
+
+ /* if the fault was due to disconnect, let khubd's
+ * call to usblp_disconnect() grab usblp->sem ...
+ */
+ schedule ();
+ continue;
+ }
+
+ /* We must increment writecount here, and not at the
+ * end of the loop. Otherwise, the final loop iteration may
+ * be skipped, leading to incomplete printer output.
+ */
+ writecount += transfer_length;
+ if (writecount == count) {
+ up(&usblp->sem);
+ break;
+ }
+
+ transfer_length=(count - writecount);
+ if (transfer_length > USBLP_BUF_SIZE)
+ transfer_length = USBLP_BUF_SIZE;
+
+ usblp->writeurb->transfer_buffer_length = transfer_length;
+
+ if (copy_from_user(usblp->writeurb->transfer_buffer,
+ buffer + writecount, transfer_length)) {
+ up(&usblp->sem);
+ return writecount ? writecount : -EFAULT;
+ }
+
+ usblp->writeurb->dev = usblp->dev;
+ usblp->wcomplete = 0;
+ err = usb_submit_urb(usblp->writeurb, GFP_KERNEL);
+ if (err) {
+ if (err != -ENOMEM)
+ count = -EIO;
+ else
+ count = writecount ? writecount : -ENOMEM;
+ up (&usblp->sem);
+ break;
+ }
+ up (&usblp->sem);
+ }
+
+ return count;
+}
+
+static ssize_t usblp_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+ struct usblp *usblp = file->private_data;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if (!usblp->bidir)
+ return -EINVAL;
+
+ down (&usblp->sem);
+ if (!usblp->present) {
+ count = -ENODEV;
+ goto done;
+ }
+
+ if (!usblp->rcomplete) {
+ barrier();
+
+ if (file->f_flags & O_NONBLOCK) {
+ count = -EAGAIN;
+ goto done;
+ }
+
+ add_wait_queue(&usblp->wait, &wait);
+ while (1==1) {
+ if (signal_pending(current)) {
+ count = -EINTR;
+ remove_wait_queue(&usblp->wait, &wait);
+ goto done;
+ }
+ up (&usblp->sem);
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (!usblp->rcomplete) {
+ schedule();
+ } else {
+ set_current_state(TASK_RUNNING);
+ break;
+ }
+ down (&usblp->sem);
+ }
+ remove_wait_queue(&usblp->wait, &wait);
+ }
+
+ if (!usblp->present) {
+ count = -ENODEV;
+ goto done;
+ }
+
+ if (usblp->readurb->status) {
+ err("usblp%d: error %d reading from printer",
+ usblp->minor, usblp->readurb->status);
+ usblp->readurb->dev = usblp->dev;
+ usblp->readcount = 0;
+ usblp->rcomplete = 0;
+ if (usb_submit_urb(usblp->readurb, GFP_KERNEL) < 0)
+ dbg("error submitting urb");
+ count = -EIO;
+ goto done;
+ }
+
+ count = count < usblp->readurb->actual_length - usblp->readcount ?
+ count : usblp->readurb->actual_length - usblp->readcount;
+
+ if (copy_to_user(buffer, usblp->readurb->transfer_buffer + usblp->readcount, count)) {
+ count = -EFAULT;
+ goto done;
+ }
+
+ if ((usblp->readcount += count) == usblp->readurb->actual_length) {
+ usblp->readcount = 0;
+ usblp->readurb->dev = usblp->dev;
+ usblp->rcomplete = 0;
+ if (usb_submit_urb(usblp->readurb, GFP_KERNEL)) {
+ count = -EIO;
+ goto done;
+ }
+ }
+
+done:
+ up (&usblp->sem);
+ return count;
+}
+
+/*
+ * Checks for printers that have quirks, such as requiring unidirectional
+ * communication but reporting bidirectional; currently some HP printers
+ * have this flaw (HP 810, 880, 895, etc.), or needing an init string
+ * sent at each open (like some Epsons).
+ * Returns 1 if found, 0 if not found.
+ *
+ * HP recommended that we use the bidirectional interface but
+ * don't attempt any bulk IN transfers from the IN endpoint.
+ * Here's some more detail on the problem:
+ * The problem is not that it isn't bidirectional though. The problem
+ * is that if you request a device ID, or status information, while
+ * the buffers are full, the return data will end up in the print data
+ * buffer. For example if you make sure you never request the device ID
+ * while you are sending print data, and you don't try to query the
+ * printer status every couple of milliseconds, you will probably be OK.
+ */
+static unsigned int usblp_quirks (__u16 vendor, __u16 product)
+{
+ int i;
+
+ for (i = 0; quirk_printers[i].vendorId; i++) {
+ if (vendor == quirk_printers[i].vendorId &&
+ product == quirk_printers[i].productId)
+ return quirk_printers[i].quirks;
+ }
+ return 0;
+}
+
+static struct file_operations usblp_fops = {
+ .owner = THIS_MODULE,
+ .read = usblp_read,
+ .write = usblp_write,
+ .poll = usblp_poll,
+ .ioctl = usblp_ioctl,
+ .open = usblp_open,
+ .release = usblp_release,
+};
+
+static struct usb_class_driver usblp_class = {
+ .name = "usb/lp%d",
+ .fops = &usblp_fops,
+ .mode = S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+ .minor_base = USBLP_MINOR_BASE,
+};
+
+static int usblp_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev (intf);
+ struct usblp *usblp = NULL;
+ int protocol;
+ int retval;
+
+ /* Malloc and start initializing usblp structure so we can use it
+ * directly. */
+ if (!(usblp = kmalloc(sizeof(struct usblp), GFP_KERNEL))) {
+ err("out of memory for usblp");
+ goto abort;
+ }
+ memset(usblp, 0, sizeof(struct usblp));
+ usblp->dev = dev;
+ init_MUTEX (&usblp->sem);
+ init_waitqueue_head(&usblp->wait);
+ usblp->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
+ usblp->intf = intf;
+
+ usblp->writeurb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!usblp->writeurb) {
+ err("out of memory");
+ goto abort;
+ }
+ usblp->readurb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!usblp->readurb) {
+ err("out of memory");
+ goto abort;
+ }
+
+ /* Malloc device ID string buffer to the largest expected length,
+ * since we can re-query it on an ioctl and a dynamic string
+ * could change in length. */
+ if (!(usblp->device_id_string = kmalloc(USBLP_DEVICE_ID_SIZE, GFP_KERNEL))) {
+ err("out of memory for device_id_string");
+ goto abort;
+ }
+
+ usblp->writebuf = usblp->readbuf = NULL;
+ usblp->writeurb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
+ usblp->readurb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
+ /* Malloc write & read buffers. We somewhat wastefully
+ * malloc both regardless of bidirectionality, because the
+ * alternate setting can be changed later via an ioctl. */
+ if (!(usblp->writebuf = usb_buffer_alloc(dev, USBLP_BUF_SIZE,
+ GFP_KERNEL, &usblp->writeurb->transfer_dma))) {
+ err("out of memory for write buf");
+ goto abort;
+ }
+ if (!(usblp->readbuf = usb_buffer_alloc(dev, USBLP_BUF_SIZE,
+ GFP_KERNEL, &usblp->readurb->transfer_dma))) {
+ err("out of memory for read buf");
+ goto abort;
+ }
+
+ /* Allocate buffer for printer status */
+ usblp->statusbuf = kmalloc(STATUS_BUF_SIZE, GFP_KERNEL);
+ if (!usblp->statusbuf) {
+ err("out of memory for statusbuf");
+ goto abort;
+ }
+
+ /* Lookup quirks for this printer. */
+ usblp->quirks = usblp_quirks(
+ le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+
+ /* Analyze and pick initial alternate settings and endpoints. */
+ protocol = usblp_select_alts(usblp);
+ if (protocol < 0) {
+ dbg("incompatible printer-class device 0x%4.4X/0x%4.4X",
+ le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct));
+ goto abort;
+ }
+
+ /* Setup the selected alternate setting and endpoints. */
+ if (usblp_set_protocol(usblp, protocol) < 0)
+ goto abort;
+
+ /* Retrieve and store the device ID string. */
+ usblp_cache_device_id_string(usblp);
+
+#ifdef DEBUG
+ usblp_check_status(usblp, 0);
+#endif
+
+ info("usblp%d: USB %sdirectional printer dev %d "
+ "if %d alt %d proto %d vid 0x%4.4X pid 0x%4.4X",
+ usblp->minor, usblp->bidir ? "Bi" : "Uni", dev->devnum,
+ usblp->ifnum,
+ usblp->protocol[usblp->current_protocol].alt_setting,
+ usblp->current_protocol,
+ le16_to_cpu(usblp->dev->descriptor.idVendor),
+ le16_to_cpu(usblp->dev->descriptor.idProduct));
+
+ usb_set_intfdata (intf, usblp);
+
+ usblp->present = 1;
+
+ retval = usb_register_dev(intf, &usblp_class);
+ if (retval) {
+ err("Not able to get a minor for this device.");
+ goto abort_intfdata;
+ }
+ usblp->minor = intf->minor;
+
+ return 0;
+
+abort_intfdata:
+ usb_set_intfdata (intf, NULL);
+abort:
+ if (usblp) {
+ if (usblp->writebuf)
+ usb_buffer_free (usblp->dev, USBLP_BUF_SIZE,
+ usblp->writebuf, usblp->writeurb->transfer_dma);
+ if (usblp->readbuf)
+ usb_buffer_free (usblp->dev, USBLP_BUF_SIZE,
+ usblp->readbuf, usblp->writeurb->transfer_dma);
+ kfree(usblp->statusbuf);
+ kfree(usblp->device_id_string);
+ usb_free_urb(usblp->writeurb);
+ usb_free_urb(usblp->readurb);
+ kfree(usblp);
+ }
+ return -EIO;
+}
+
+/*
+ * We are a "new" style driver with usb_device_id table,
+ * but our requirements are too intricate for simple match to handle.
+ *
+ * The "proto_bias" option may be used to specify the preferred protocol
+ * for all USB printers (1=7/1/1, 2=7/1/2, 3=7/1/3). If the device
+ * supports the preferred protocol, then we bind to it.
+ *
+ * The best interface for us is 7/1/2, because it is compatible
+ * with a stream of characters. If we find it, we bind to it.
+ *
+ * Note that the people from hpoj.sourceforge.net need to be able to
+ * bind to 7/1/3 (MLC/1284.4), so we provide them ioctls for this purpose.
+ *
+ * Failing 7/1/2, we look for 7/1/3, even though it's probably not
+ * stream-compatible, because this matches the behaviour of the old code.
+ *
+ * If nothing else, we bind to 7/1/1 - the unidirectional interface.
+ */
+static int usblp_select_alts(struct usblp *usblp)
+{
+ struct usb_interface *if_alt;
+ struct usb_host_interface *ifd;
+ struct usb_endpoint_descriptor *epd, *epwrite, *epread;
+ int p, i, e;
+
+ if_alt = usblp->intf;
+
+ for (p = 0; p < USBLP_MAX_PROTOCOLS; p++)
+ usblp->protocol[p].alt_setting = -1;
+
+ /* Find out what we have. */
+ for (i = 0; i < if_alt->num_altsetting; i++) {
+ ifd = &if_alt->altsetting[i];
+
+ if (ifd->desc.bInterfaceClass != 7 || ifd->desc.bInterfaceSubClass != 1)
+ continue;
+
+ if (ifd->desc.bInterfaceProtocol < USBLP_FIRST_PROTOCOL ||
+ ifd->desc.bInterfaceProtocol > USBLP_LAST_PROTOCOL)
+ continue;
+
+ /* Look for bulk OUT and IN endpoints. */
+ epwrite = epread = NULL;
+ for (e = 0; e < ifd->desc.bNumEndpoints; e++) {
+ epd = &ifd->endpoint[e].desc;
+
+ if ((epd->bmAttributes&USB_ENDPOINT_XFERTYPE_MASK)!=
+ USB_ENDPOINT_XFER_BULK)
+ continue;
+
+ if (!(epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK)) {
+ if (!epwrite)
+ epwrite = epd;
+
+ } else {
+ if (!epread)
+ epread = epd;
+ }
+ }
+
+ /* Ignore buggy hardware without the right endpoints. */
+ if (!epwrite || (ifd->desc.bInterfaceProtocol > 1 && !epread))
+ continue;
+
+ /* Turn off reads for 7/1/1 (unidirectional) interfaces
+ * and buggy bidirectional printers. */
+ if (ifd->desc.bInterfaceProtocol == 1) {
+ epread = NULL;
+ } else if (usblp->quirks & USBLP_QUIRK_BIDIR) {
+ info("Disabling reads from problem bidirectional "
+ "printer on usblp%d", usblp->minor);
+ epread = NULL;
+ }
+
+ usblp->protocol[ifd->desc.bInterfaceProtocol].alt_setting =
+ ifd->desc.bAlternateSetting;
+ usblp->protocol[ifd->desc.bInterfaceProtocol].epwrite = epwrite;
+ usblp->protocol[ifd->desc.bInterfaceProtocol].epread = epread;
+ }
+
+ /* If our requested protocol is supported, then use it. */
+ if (proto_bias >= USBLP_FIRST_PROTOCOL &&
+ proto_bias <= USBLP_LAST_PROTOCOL &&
+ usblp->protocol[proto_bias].alt_setting != -1)
+ return proto_bias;
+
+ /* Ordering is important here. */
+ if (usblp->protocol[2].alt_setting != -1)
+ return 2;
+ if (usblp->protocol[1].alt_setting != -1)
+ return 1;
+ if (usblp->protocol[3].alt_setting != -1)
+ return 3;
+
+ /* If nothing is available, then don't bind to this device. */
+ return -1;
+}
+
+static int usblp_set_protocol(struct usblp *usblp, int protocol)
+{
+ int r, alts;
+
+ if (protocol < USBLP_FIRST_PROTOCOL || protocol > USBLP_LAST_PROTOCOL)
+ return -EINVAL;
+
+ alts = usblp->protocol[protocol].alt_setting;
+ if (alts < 0)
+ return -EINVAL;
+ r = usb_set_interface(usblp->dev, usblp->ifnum, alts);
+ if (r < 0) {
+ err("can't set desired altsetting %d on interface %d",
+ alts, usblp->ifnum);
+ return r;
+ }
+
+ usb_fill_bulk_urb(usblp->writeurb, usblp->dev,
+ usb_sndbulkpipe(usblp->dev,
+ usblp->protocol[protocol].epwrite->bEndpointAddress),
+ usblp->writebuf, 0,
+ usblp_bulk_write, usblp);
+
+ usblp->bidir = (usblp->protocol[protocol].epread != NULL);
+ if (usblp->bidir)
+ usb_fill_bulk_urb(usblp->readurb, usblp->dev,
+ usb_rcvbulkpipe(usblp->dev,
+ usblp->protocol[protocol].epread->bEndpointAddress),
+ usblp->readbuf, USBLP_BUF_SIZE,
+ usblp_bulk_read, usblp);
+
+ usblp->current_protocol = protocol;
+ dbg("usblp%d set protocol %d", usblp->minor, protocol);
+ return 0;
+}
+
+/* Retrieves and caches device ID string.
+ * Returns length, including length bytes but not null terminator.
+ * On error, returns a negative errno value. */
+static int usblp_cache_device_id_string(struct usblp *usblp)
+{
+ int err, length;
+
+ err = usblp_get_id(usblp, 0, usblp->device_id_string, USBLP_DEVICE_ID_SIZE - 1);
+ if (err < 0) {
+ dbg("usblp%d: error = %d reading IEEE-1284 Device ID string",
+ usblp->minor, err);
+ usblp->device_id_string[0] = usblp->device_id_string[1] = '\0';
+ return -EIO;
+ }
+
+ /* First two bytes are length in big-endian.
+ * They count themselves, and we copy them into
+ * the user's buffer. */
+ length = be16_to_cpu(*((__be16 *)usblp->device_id_string));
+ if (length < 2)
+ length = 2;
+ else if (length >= USBLP_DEVICE_ID_SIZE)
+ length = USBLP_DEVICE_ID_SIZE - 1;
+ usblp->device_id_string[length] = '\0';
+
+ dbg("usblp%d Device ID string [len=%d]=\"%s\"",
+ usblp->minor, length, &usblp->device_id_string[2]);
+
+ return length;
+}
+
+static void usblp_disconnect(struct usb_interface *intf)
+{
+ struct usblp *usblp = usb_get_intfdata (intf);
+
+ usb_deregister_dev(intf, &usblp_class);
+
+ if (!usblp || !usblp->dev) {
+ err("bogus disconnect");
+ BUG ();
+ }
+
+ down (&usblp_sem);
+ down (&usblp->sem);
+ usblp->present = 0;
+ usb_set_intfdata (intf, NULL);
+
+ usblp_unlink_urbs(usblp);
+ usb_buffer_free (usblp->dev, USBLP_BUF_SIZE,
+ usblp->writebuf, usblp->writeurb->transfer_dma);
+ usb_buffer_free (usblp->dev, USBLP_BUF_SIZE,
+ usblp->readbuf, usblp->readurb->transfer_dma);
+ up (&usblp->sem);
+
+ if (!usblp->used)
+ usblp_cleanup (usblp);
+ up (&usblp_sem);
+}
+
+static struct usb_device_id usblp_ids [] = {
+ { USB_DEVICE_INFO(7, 1, 1) },
+ { USB_DEVICE_INFO(7, 1, 2) },
+ { USB_DEVICE_INFO(7, 1, 3) },
+ { USB_INTERFACE_INFO(7, 1, 1) },
+ { USB_INTERFACE_INFO(7, 1, 2) },
+ { USB_INTERFACE_INFO(7, 1, 3) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usblp_ids);
+
+static struct usb_driver usblp_driver = {
+ .owner = THIS_MODULE,
+ .name = "usblp",
+ .probe = usblp_probe,
+ .disconnect = usblp_disconnect,
+ .id_table = usblp_ids,
+};
+
+static int __init usblp_init(void)
+{
+ int retval;
+ retval = usb_register(&usblp_driver);
+ if (retval)
+ goto out;
+ info(DRIVER_VERSION ": " DRIVER_DESC);
+out:
+ return retval;
+}
+
+static void __exit usblp_exit(void)
+{
+ usb_deregister(&usblp_driver);
+}
+
+module_init(usblp_init);
+module_exit(usblp_exit);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+module_param(proto_bias, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(proto_bias, "Favourite protocol number");
+MODULE_LICENSE("GPL");