1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 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 */ 19 static 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 */ 25 static 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 info 32 */ 33 static 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 40 static 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 49 void 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 57 static 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 formats 91 */ 92 static 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 else 148 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 } 171 172 static 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_FULL 182 ? 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 } 191 192 static 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 } 209 210 static 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 } 228 229 void 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