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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 */4 5#include <linux/init.h>6#include <linux/usb.h>7 8#include <sound/core.h>9#include <sound/info.h>10#include <sound/pcm.h>11 12#include "usbaudio.h"13#include "helper.h"14#include "card.h"15#include "endpoint.h"16#include "proc.h"17 18/* convert our full speed USB rate into sampling rate in Hz */19static inline unsigned get_full_speed_hz(unsigned int usb_rate)20{21 return (usb_rate * 125 + (1 << 12)) >> 13;22}23 24/* convert our high speed USB rate into sampling rate in Hz */25static inline unsigned get_high_speed_hz(unsigned int usb_rate)26{27 return (usb_rate * 125 + (1 << 9)) >> 10;28}29 30/*31 * common proc files to show the usb device info32 */33static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)34{35 struct snd_usb_audio *chip = entry->private_data;36 if (!atomic_read(&chip->shutdown))37 snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);38}39 40static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)41{42 struct snd_usb_audio *chip = entry->private_data;43 if (!atomic_read(&chip->shutdown))44 snd_iprintf(buffer, "%04x:%04x\n", 45 USB_ID_VENDOR(chip->usb_id),46 USB_ID_PRODUCT(chip->usb_id));47}48 49void snd_usb_audio_create_proc(struct snd_usb_audio *chip)50{51 snd_card_ro_proc_new(chip->card, "usbbus", chip,52 proc_audio_usbbus_read);53 snd_card_ro_proc_new(chip->card, "usbid", chip,54 proc_audio_usbid_read);55}56 57static const char * const channel_labels[] = {58 [SNDRV_CHMAP_NA] = "N/A",59 [SNDRV_CHMAP_MONO] = "MONO",60 [SNDRV_CHMAP_FL] = "FL",61 [SNDRV_CHMAP_FR] = "FR",62 [SNDRV_CHMAP_FC] = "FC",63 [SNDRV_CHMAP_LFE] = "LFE",64 [SNDRV_CHMAP_RL] = "RL",65 [SNDRV_CHMAP_RR] = "RR",66 [SNDRV_CHMAP_FLC] = "FLC",67 [SNDRV_CHMAP_FRC] = "FRC",68 [SNDRV_CHMAP_RC] = "RC",69 [SNDRV_CHMAP_SL] = "SL",70 [SNDRV_CHMAP_SR] = "SR",71 [SNDRV_CHMAP_TC] = "TC",72 [SNDRV_CHMAP_TFL] = "TFL",73 [SNDRV_CHMAP_TFC] = "TFC",74 [SNDRV_CHMAP_TFR] = "TFR",75 [SNDRV_CHMAP_TRL] = "TRL",76 [SNDRV_CHMAP_TRC] = "TRC",77 [SNDRV_CHMAP_TRR] = "TRR",78 [SNDRV_CHMAP_TFLC] = "TFLC",79 [SNDRV_CHMAP_TFRC] = "TFRC",80 [SNDRV_CHMAP_LLFE] = "LLFE",81 [SNDRV_CHMAP_RLFE] = "RLFE",82 [SNDRV_CHMAP_TSL] = "TSL",83 [SNDRV_CHMAP_TSR] = "TSR",84 [SNDRV_CHMAP_BC] = "BC",85 [SNDRV_CHMAP_RLC] = "RLC",86 [SNDRV_CHMAP_RRC] = "RRC",87};88 89/*90 * proc interface for list the supported pcm formats91 */92static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)93{94 struct audioformat *fp;95 static const char * const sync_types[4] = {96 "NONE", "ASYNC", "ADAPTIVE", "SYNC"97 };98 99 list_for_each_entry(fp, &subs->fmt_list, list) {100 snd_pcm_format_t fmt;101 102 snd_iprintf(buffer, " Interface %d\n", fp->iface);103 snd_iprintf(buffer, " Altset %d\n", fp->altsetting);104 snd_iprintf(buffer, " Format:");105 pcm_for_each_format(fmt)106 if (fp->formats & pcm_format_to_bits(fmt))107 snd_iprintf(buffer, " %s",108 snd_pcm_format_name(fmt));109 snd_iprintf(buffer, "\n");110 snd_iprintf(buffer, " Channels: %d\n", fp->channels);111 snd_iprintf(buffer, " Endpoint: 0x%02x (%d %s) (%s)\n",112 fp->endpoint,113 fp->endpoint & USB_ENDPOINT_NUMBER_MASK,114 fp->endpoint & USB_DIR_IN ? "IN" : "OUT",115 sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);116 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {117 snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",118 fp->rate_min, fp->rate_max);119 } else {120 unsigned int i;121 snd_iprintf(buffer, " Rates: ");122 for (i = 0; i < fp->nr_rates; i++) {123 if (i > 0)124 snd_iprintf(buffer, ", ");125 snd_iprintf(buffer, "%d", fp->rate_table[i]);126 }127 snd_iprintf(buffer, "\n");128 }129 if (subs->speed != USB_SPEED_FULL)130 snd_iprintf(buffer, " Data packet interval: %d us\n",131 125 * (1 << fp->datainterval));132 snd_iprintf(buffer, " Bits: %d\n", fp->fmt_bits);133 134 if (fp->dsd_raw)135 snd_iprintf(buffer, " DSD raw: DOP=%d, bitrev=%d\n",136 fp->dsd_dop, fp->dsd_bitrev);137 138 if (fp->chmap) {139 const struct snd_pcm_chmap_elem *map = fp->chmap;140 int c;141 142 snd_iprintf(buffer, " Channel map:");143 for (c = 0; c < map->channels; c++) {144 if (map->map[c] >= ARRAY_SIZE(channel_labels) ||145 !channel_labels[map->map[c]])146 snd_iprintf(buffer, " --");147 else148 snd_iprintf(buffer, " %s",149 channel_labels[map->map[c]]);150 }151 snd_iprintf(buffer, "\n");152 }153 154 if (fp->sync_ep) {155 snd_iprintf(buffer, " Sync Endpoint: 0x%02x (%d %s)\n",156 fp->sync_ep,157 fp->sync_ep & USB_ENDPOINT_NUMBER_MASK,158 fp->sync_ep & USB_DIR_IN ? "IN" : "OUT");159 snd_iprintf(buffer, " Sync EP Interface: %d\n",160 fp->sync_iface);161 snd_iprintf(buffer, " Sync EP Altset: %d\n",162 fp->sync_altsetting);163 snd_iprintf(buffer, " Implicit Feedback Mode: %s\n",164 fp->implicit_fb ? "Yes" : "No");165 }166 167 // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);168 // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);169 }170}171 172static void proc_dump_ep_status(struct snd_usb_substream *subs,173 struct snd_usb_endpoint *data_ep,174 struct snd_usb_endpoint *sync_ep,175 struct snd_info_buffer *buffer)176{177 if (!data_ep)178 return;179 snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize);180 snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",181 subs->speed == USB_SPEED_FULL182 ? get_full_speed_hz(data_ep->freqm)183 : get_high_speed_hz(data_ep->freqm),184 data_ep->freqm >> 16, data_ep->freqm & 0xffff);185 if (sync_ep && data_ep->freqshift != INT_MIN) {186 int res = 16 - data_ep->freqshift;187 snd_iprintf(buffer, " Feedback Format = %d.%d\n",188 (sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res);189 }190}191 192static void proc_dump_substream_status(struct snd_usb_audio *chip,193 struct snd_usb_substream *subs,194 struct snd_info_buffer *buffer)195{196 mutex_lock(&chip->mutex);197 if (subs->running) {198 snd_iprintf(buffer, " Status: Running\n");199 if (subs->cur_audiofmt) {200 snd_iprintf(buffer, " Interface = %d\n", subs->cur_audiofmt->iface);201 snd_iprintf(buffer, " Altset = %d\n", subs->cur_audiofmt->altsetting);202 }203 proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer);204 } else {205 snd_iprintf(buffer, " Status: Stop\n");206 }207 mutex_unlock(&chip->mutex);208}209 210static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)211{212 struct snd_usb_stream *stream = entry->private_data;213 struct snd_usb_audio *chip = stream->chip;214 215 snd_iprintf(buffer, "%s : %s\n", chip->card->longname, stream->pcm->name);216 217 if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {218 snd_iprintf(buffer, "\nPlayback:\n");219 proc_dump_substream_status(chip, &stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);220 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);221 }222 if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {223 snd_iprintf(buffer, "\nCapture:\n");224 proc_dump_substream_status(chip, &stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);225 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);226 }227}228 229void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)230{231 char name[32];232 struct snd_card *card = stream->chip->card;233 234 sprintf(name, "stream%d", stream->pcm_index);235 snd_card_ro_proc_new(card, name, stream, proc_pcm_format_read);236}237 238