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authorTakashi Iwai <tiwai@suse.de>2020-04-20 00:21:34 +0300
committerTakashi Iwai <tiwai@suse.de>2020-04-20 01:22:04 +0300
commit093b8494f2992e58c2bef6fc26c7e11464ad415a (patch)
treeb01896f39c7fa32288a3beb81c183bdb75338e34
parentaa08ff0f345ef68829bab30ddb5a23e9d99301b7 (diff)
downloadlinux-093b8494f2992e58c2bef6fc26c7e11464ad415a.tar.xz
ALSA: usb-audio: Print more information in stream proc files
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>
-rw-r--r--sound/usb/proc.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/sound/usb/proc.c b/sound/usb/proc.c
index 4174ad11fca6..5a36e192ebb0 100644
--- a/sound/usb/proc.c
+++ b/sound/usb/proc.c
@@ -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);
}