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authorJaroslav Kysela <perex@perex.cz>2010-02-16 11:17:09 +0100
committerJaroslav Kysela <perex@perex.cz>2010-02-16 11:25:55 +0100
commitebfdeea3df2b8c265975b6acc47996a0b7c507e8 (patch)
treeb9324a24462bff4dfaae8f7ce3afe60097ead495 /sound/usb/usbmixer.c
parentb8f1f5983fbe751aa3d07d9ce7ebb0c23bf4b7e4 (diff)
ALSA: usbmixer - introduce /proc/asound/card#/usbmixer file
The usbmixer proc file contains mapping between ALSA control API and USB mixer control units. The purpose of this file is for debugging and a problem diagnostics. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/usb/usbmixer.c')
-rw-r--r--sound/usb/usbmixer.c75
1 files changed, 61 insertions, 14 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index dd0c1d7bf3e..170bfd4fc9f 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -69,13 +69,16 @@ static const struct rc_config {
{ USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
};
+#define MAX_ID_ELEMS 256
+
struct usb_mixer_interface {
struct snd_usb_audio *chip;
unsigned int ctrlif;
struct list_head list;
unsigned int ignore_ctl_error;
struct urb *urb;
- struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */
+ /* array[MAX_ID_ELEMS], indexed by unit id */
+ struct usb_mixer_elem_info **id_elems;
/* Sound Blaster remote control stuff */
const struct rc_config *rc_cfg;
@@ -1825,6 +1828,45 @@ static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
info->elem_id);
}
+static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
+ int unitid,
+ struct usb_mixer_elem_info *cval)
+{
+ static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN",
+ "S8", "U8", "S16", "U16"};
+ snd_iprintf(buffer, " Unit: %i\n", unitid);
+ if (cval->elem_id)
+ snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n",
+ cval->elem_id->name, cval->elem_id->index);
+ snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, "
+ "channels=%i, type=\"%s\"\n", cval->id,
+ cval->control, cval->cmask, cval->channels,
+ val_types[cval->val_type]);
+ snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
+ cval->min, cval->max, cval->dBmin, cval->dBmax);
+}
+
+static void snd_usb_mixer_proc_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
+{
+ struct snd_usb_audio *chip = entry->private_data;
+ struct usb_mixer_interface *mixer;
+ struct usb_mixer_elem_info *cval;
+ int unitid;
+
+ list_for_each_entry(mixer, &chip->mixer_list, list) {
+ snd_iprintf(buffer,
+ "USB Mixer: ctrlif=%i, ctlerr=%i\n",
+ mixer->ctrlif, mixer->ignore_ctl_error);
+ snd_iprintf(buffer, "Card: %s\n", chip->card->longname);
+ for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) {
+ for (cval = mixer->id_elems[unitid]; cval;
+ cval = cval->next_id_elem)
+ snd_usb_mixer_dump_cval(buffer, unitid, cval);
+ }
+ }
+}
+
static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
int unitid)
{
@@ -2187,20 +2229,21 @@ static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
}
void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
- unsigned char samplerate_id)
+ unsigned char samplerate_id)
{
- struct usb_mixer_interface *mixer;
- struct usb_mixer_elem_info *cval;
- int unitid = 12; /* SamleRate ExtensionUnit ID */
+ struct usb_mixer_interface *mixer;
+ struct usb_mixer_elem_info *cval;
+ int unitid = 12; /* SamleRate ExtensionUnit ID */
- list_for_each_entry(mixer, &chip->mixer_list, list) {
- cval = mixer->id_elems[unitid];
- if (cval) {
- set_cur_ctl_value(cval, cval->control << 8, samplerate_id);
+ list_for_each_entry(mixer, &chip->mixer_list, list) {
+ cval = mixer->id_elems[unitid];
+ if (cval) {
+ set_cur_ctl_value(cval, cval->control << 8,
+ samplerate_id);
snd_usb_mixer_notify_id(mixer, unitid);
- }
- break;
- }
+ }
+ break;
+ }
}
int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
@@ -2210,6 +2253,7 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
.dev_free = snd_usb_mixer_dev_free
};
struct usb_mixer_interface *mixer;
+ struct snd_info_entry *entry;
int err;
strcpy(chip->card->mixername, "USB Mixer");
@@ -2236,8 +2280,6 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
- struct snd_info_entry *entry;
-
if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
goto _error;
if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
@@ -2255,6 +2297,11 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
if (err < 0)
goto _error;
+
+ if (list_empty(&chip->mixer_list) &&
+ !snd_card_proc_new(chip->card, "usbmixer", &entry))
+ snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read);
+
list_add(&mixer->list, &chip->mixer_list);
return 0;