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[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>
This commit is contained in:
Clemens Ladisch 2005-05-10 14:47:38 +02:00 committed by Jaroslav Kysela
parent f55a655bf9
commit aafad5629a
1 changed files with 51 additions and 3 deletions
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54
sound/usb/usbmixer.c
View File

@ -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_notify_id(struct usb_mixer_interface *mixer,
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 @@ static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
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 @@ int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
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);