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