[ALSA] usb-audio - add a proc file for Audigy 2 NX jack status
USB generic driver
This patch adds a proc file for the SB Audigy 2 NX which shows the
connection status of the various jacks. Unfortunately, no SPDIF input
frequency (yet).
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 4a49e19..83ba665 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -36,6 +36,7 @@
#include <sound/core.h>
#include <sound/control.h>
#include <sound/hwdep.h>
+#include <sound/info.h>
#include "usbaudio.h"
@@ -1622,11 +1623,22 @@
static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
int unitid)
{
- /* SB remote control */
- if (mixer->rc_type != RC_NONE && unitid == 0) {
- /* read control code from device memory */
+ if (mixer->rc_type == RC_NONE)
+ return;
+ /* unit ids specific to Extigy/Audigy 2 NX: */
+ switch (unitid) {
+ case 0: /* remote control */
mixer->rc_urb->dev = mixer->chip->dev;
usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
+ break;
+ case 4: /* digital in jack */
+ case 7: /* line in jacks */
+ case 19: /* speaker out jacks */
+ case 20: /* headphones out jack */
+ break;
+ default:
+ snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
+ break;
}
}
@@ -1894,6 +1906,37 @@
return 0;
}
+static void snd_audigy2nx_proc_read(snd_info_entry_t *entry,
+ snd_info_buffer_t *buffer)
+{
+ static const struct {
+ int unitid;
+ const char *name;
+ } jacks[] = {
+ {4, "dig in "},
+ {7, "line in"},
+ {19, "spk out"},
+ {20, "hph out"},
+ };
+ struct usb_mixer_interface *mixer = entry->private_data;
+ int i, err;
+ u8 buf[3];
+
+ snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
+ for (i = 0; i < ARRAY_SIZE(jacks); ++i) {
+ snd_iprintf(buffer, "%s: ", jacks[i].name);
+ err = snd_usb_ctl_msg(mixer->chip->dev,
+ usb_rcvctrlpipe(mixer->chip->dev, 0),
+ GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
+ USB_RECIP_INTERFACE, 0,
+ jacks[i].unitid << 8, buf, 3, 100);
+ if (err == 3 && buf[0] == 3)
+ snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
+ else
+ snd_iprintf(buffer, "?\n");
+ }
+}
+
int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
{
static snd_device_ops_t dev_ops = {
@@ -1926,8 +1969,13 @@
goto _error;
if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) {
+ snd_info_entry_t *entry;
+
if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
goto _error;
+ if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
+ snd_info_set_text_ops(entry, mixer, 1024,
+ snd_audigy2nx_proc_read);
}
err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);