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/serial/omninet.c b/drivers/usb/serial/omninet.c
new file mode 100644
index 0000000..a1cba4b
--- /dev/null
+++ b/drivers/usb/serial/omninet.c
@@ -0,0 +1,362 @@
+/*
+ * USB ZyXEL omni.net LCD PLUS driver
+ *
+ * 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.
+ *
+ * See Documentation/usb/usb-serial.txt for more information on using this driver
+ *
+ * Please report both successes and troubles to the author at omninet@kroah.com
+ *
+ * (05/30/2001) gkh
+ * switched from using spinlock to a semaphore, which fixes lots of problems.
+ *
+ * (04/08/2001) gb
+ * Identify version on module load.
+ *
+ * (11/01/2000) Adam J. Richter
+ * usb_device_id table support
+ *
+ * (10/05/2000) gkh
+ * Fixed bug with urb->dev not being set properly, now that the usb
+ * core needs it.
+ *
+ * (08/28/2000) gkh
+ * Added locks for SMP safeness.
+ * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
+ * than once.
+ * Fixed potential race in omninet_write_bulk_callback
+ *
+ * (07/19/2000) gkh
+ * Added module_init and module_exit functions to handle the fact that this
+ * driver is a loadable module now.
+ *
+ */
+
+#include <linux/config.h>
+#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/spinlock.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+#include "usb-serial.h"
+
+static int debug;
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v1.1"
+#define DRIVER_AUTHOR "Alessandro Zummo"
+#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"
+
+#define ZYXEL_VENDOR_ID 0x0586
+#define ZYXEL_OMNINET_ID 0x1000
+#define BT_IGNITIONPRO_ID 0x2000 /* This one seems to be a re-branded ZyXEL device */
+
+/* function prototypes */
+static int omninet_open (struct usb_serial_port *port, struct file *filp);
+static void omninet_close (struct usb_serial_port *port, struct file *filp);
+static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
+static void omninet_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
+static int omninet_write (struct usb_serial_port *port, const unsigned char *buf, int count);
+static int omninet_write_room (struct usb_serial_port *port);
+static void omninet_shutdown (struct usb_serial *serial);
+
+static struct usb_device_id id_table [] = {
+ { USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
+ { USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, id_table);
+
+static struct usb_driver omninet_driver = {
+ .owner = THIS_MODULE,
+ .name = "omninet",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+};
+
+
+static struct usb_serial_device_type zyxel_omninet_device = {
+ .owner = THIS_MODULE,
+ .name = "ZyXEL - omni.net lcd plus usb",
+ .short_name = "omninet",
+ .id_table = id_table,
+ .num_interrupt_in = 1,
+ .num_bulk_in = 1,
+ .num_bulk_out = 2,
+ .num_ports = 1,
+ .open = omninet_open,
+ .close = omninet_close,
+ .write = omninet_write,
+ .write_room = omninet_write_room,
+ .read_bulk_callback = omninet_read_bulk_callback,
+ .write_bulk_callback = omninet_write_bulk_callback,
+ .shutdown = omninet_shutdown,
+};
+
+
+/* The protocol.
+ *
+ * The omni.net always exchange 64 bytes of data with the host. The first
+ * four bytes are the control header, you can see it in the above structure.
+ *
+ * oh_seq is a sequence number. Don't know if/how it's used.
+ * oh_len is the length of the data bytes in the packet.
+ * oh_xxx Bit-mapped, related to handshaking and status info.
+ * I normally set it to 0x03 in trasmitted frames.
+ * 7: Active when the TA is in a CONNECTed state.
+ * 6: unknown
+ * 5: handshaking, unknown
+ * 4: handshaking, unknown
+ * 3: unknown, usually 0
+ * 2: unknown, usually 0
+ * 1: handshaking, unknown, usually set to 1 in trasmitted frames
+ * 0: handshaking, unknown, usually set to 1 in trasmitted frames
+ * oh_pad Probably a pad byte.
+ *
+ * After the header you will find data bytes if oh_len was greater than zero.
+ *
+ */
+
+struct omninet_header
+{
+ __u8 oh_seq;
+ __u8 oh_len;
+ __u8 oh_xxx;
+ __u8 oh_pad;
+};
+
+struct omninet_data
+{
+ __u8 od_outseq; // Sequence number for bulk_out URBs
+};
+
+static int omninet_open (struct usb_serial_port *port, struct file *filp)
+{
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *wport;
+ struct omninet_data *od;
+ int result = 0;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
+ if( !od ) {
+ err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
+ return -ENOMEM;
+ }
+
+ usb_set_serial_port_data(port, od);
+ wport = serial->port[1];
+ wport->tty = port->tty;
+
+ /* Start reading from the device */
+ usb_fill_bulk_urb(port->read_urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+ port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
+ omninet_read_bulk_callback, port);
+ result = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ if (result)
+ err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
+
+ return result;
+}
+
+static void omninet_close (struct usb_serial_port *port, struct file * filp)
+{
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *wport;
+ struct omninet_data *od;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ wport = serial->port[1];
+ usb_kill_urb(wport->write_urb);
+ usb_kill_urb(port->read_urb);
+
+ od = usb_get_serial_port_data(port);
+ if (od)
+ kfree(od);
+}
+
+
+#define OMNINET_DATAOFFSET 0x04
+#define OMNINET_HEADERLEN sizeof(struct omninet_header)
+#define OMNINET_BULKOUTSIZE (64 - OMNINET_HEADERLEN)
+
+static void omninet_read_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ struct omninet_header *header = (struct omninet_header *) &data[0];
+
+ int i;
+ int result;
+
+// dbg("omninet_read_bulk_callback");
+
+ if (urb->status) {
+ dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+
+ if ((debug) && (header->oh_xxx != 0x30)) {
+ if (urb->actual_length) {
+ printk (KERN_DEBUG __FILE__ ": omninet_read %d: ", header->oh_len);
+ for (i = 0; i < (header->oh_len + OMNINET_HEADERLEN); i++) {
+ printk ("%.2x ", data[i]);
+ }
+ printk ("\n");
+ }
+ }
+
+ if (urb->actual_length && header->oh_len) {
+ for (i = 0; i < header->oh_len; i++) {
+ tty_insert_flip_char(port->tty, data[OMNINET_DATAOFFSET + i], 0);
+ }
+ tty_flip_buffer_push(port->tty);
+ }
+
+ /* Continue trying to always read */
+ usb_fill_bulk_urb(urb, port->serial->dev,
+ usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress),
+ urb->transfer_buffer, urb->transfer_buffer_length,
+ omninet_read_bulk_callback, port);
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result)
+ err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result);
+
+ return;
+}
+
+static int omninet_write (struct usb_serial_port *port, const unsigned char *buf, int count)
+{
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *wport = serial->port[1];
+
+ struct omninet_data *od = usb_get_serial_port_data(port);
+ struct omninet_header *header = (struct omninet_header *) wport->write_urb->transfer_buffer;
+
+ int result;
+
+// dbg("omninet_write port %d", port->number);
+
+ if (count == 0) {
+ dbg("%s - write request of 0 bytes", __FUNCTION__);
+ return (0);
+ }
+ if (wport->write_urb->status == -EINPROGRESS) {
+ dbg("%s - already writing", __FUNCTION__);
+ return (0);
+ }
+
+ count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;
+
+ memcpy (wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET, buf, count);
+
+ usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, wport->write_urb->transfer_buffer);
+
+ header->oh_seq = od->od_outseq++;
+ header->oh_len = count;
+ header->oh_xxx = 0x03;
+ header->oh_pad = 0x00;
+
+ /* send the data out the bulk port, always 64 bytes */
+ wport->write_urb->transfer_buffer_length = 64;
+
+ wport->write_urb->dev = serial->dev;
+ result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
+ if (result)
+ err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
+ else
+ result = count;
+
+ return result;
+}
+
+
+static int omninet_write_room (struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *wport = serial->port[1];
+
+ int room = 0; // Default: no room
+
+ if (wport->write_urb->status != -EINPROGRESS)
+ room = wport->bulk_out_size - OMNINET_HEADERLEN;
+
+// dbg("omninet_write_room returns %d", room);
+
+ return (room);
+}
+
+static void omninet_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
+{
+/* struct omninet_header *header = (struct omninet_header *) urb->transfer_buffer; */
+ struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+
+// dbg("omninet_write_bulk_callback, port %0x\n", port);
+
+ if (urb->status) {
+ dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
+ return;
+ }
+
+ schedule_work(&port->work);
+
+// dbg("omninet_write_bulk_callback, tty %0x\n", tty);
+}
+
+
+static void omninet_shutdown (struct usb_serial *serial)
+{
+ dbg ("%s", __FUNCTION__);
+}
+
+
+static int __init omninet_init (void)
+{
+ int retval;
+ retval = usb_serial_register(&zyxel_omninet_device);
+ if (retval)
+ goto failed_usb_serial_register;
+ retval = usb_register(&omninet_driver);
+ if (retval)
+ goto failed_usb_register;
+ info(DRIVER_VERSION ":" DRIVER_DESC);
+ return 0;
+failed_usb_register:
+ usb_serial_deregister(&zyxel_omninet_device);
+failed_usb_serial_register:
+ return retval;
+}
+
+
+static void __exit omninet_exit (void)
+{
+ usb_deregister (&omninet_driver);
+ usb_serial_deregister (&zyxel_omninet_device);
+}
+
+
+module_init(omninet_init);
+module_exit(omninet_exit);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");