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ALSA: usb-audio: Print more information in stream proc files

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For more debug and usability information, add the entry showing the
DSD raw states and the channel mapping in each stream proc file.

Link: https://lore.kernel.org/r/20200419212134.14200-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-04-19 23:21:34 +02:00
parent aa08ff0f34
commit 093b8494f2
1 changed files with 53 additions and 0 deletions
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53
sound/usb/proc.c
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@ -54,6 +54,38 @@ void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
proc_audio_usbid_read);
}
static const char * const channel_labels[] = {
[SNDRV_CHMAP_NA] = "N/A",
[SNDRV_CHMAP_MONO] = "MONO",
[SNDRV_CHMAP_FL] = "FL",
[SNDRV_CHMAP_FR] = "FR",
[SNDRV_CHMAP_FC] = "FC",
[SNDRV_CHMAP_LFE] = "LFE",
[SNDRV_CHMAP_RL] = "RL",
[SNDRV_CHMAP_RR] = "RR",
[SNDRV_CHMAP_FLC] = "FLC",
[SNDRV_CHMAP_FRC] = "FRC",
[SNDRV_CHMAP_RC] = "RC",
[SNDRV_CHMAP_SL] = "SL",
[SNDRV_CHMAP_SR] = "SR",
[SNDRV_CHMAP_TC] = "TC",
[SNDRV_CHMAP_TFL] = "TFL",
[SNDRV_CHMAP_TFC] = "TFC",
[SNDRV_CHMAP_TFR] = "TFR",
[SNDRV_CHMAP_TRL] = "TRL",
[SNDRV_CHMAP_TRC] = "TRC",
[SNDRV_CHMAP_TRR] = "TRR",
[SNDRV_CHMAP_TFLC] = "TFLC",
[SNDRV_CHMAP_TFRC] = "TFRC",
[SNDRV_CHMAP_LLFE] = "LLFE",
[SNDRV_CHMAP_RLFE] = "RLFE",
[SNDRV_CHMAP_TSL] = "TSL",
[SNDRV_CHMAP_TSR] = "TSR",
[SNDRV_CHMAP_BC] = "BC",
[SNDRV_CHMAP_RLC] = "RLC",
[SNDRV_CHMAP_RRC] = "RRC",
};
/*
* proc interface for list the supported pcm formats
*/
@ -97,6 +129,27 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
snd_iprintf(buffer, " Data packet interval: %d us\n",
125 * (1 << fp->datainterval));
snd_iprintf(buffer, " Bits: %d\n", fp->fmt_bits);
if (fp->dsd_raw)
snd_iprintf(buffer, " DSD raw: DOP=%d, bitrev=%d\n",
fp->dsd_dop, fp->dsd_bitrev);
if (fp->chmap) {
const struct snd_pcm_chmap_elem *map = fp->chmap;
int c;
snd_iprintf(buffer, " Channel map:");
for (c = 0; c < map->channels; c++) {
if (map->map[c] >= sizeof(channel_labels) ||
!channel_labels[map->map[c]])
snd_iprintf(buffer, " --");
else
snd_iprintf(buffer, " %s",
channel_labels[map->map[c]]);
}
snd_iprintf(buffer, "\n");
}
// snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
// snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
}