Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 1 | /* |
| 2 | * digi00x-pcm.c - a part of driver for Digidesign Digi 002/003 family |
| 3 | * |
| 4 | * Copyright (c) 2014-2015 Takashi Sakamoto |
| 5 | * |
| 6 | * Licensed under the terms of the GNU General Public License, version 2. |
| 7 | */ |
| 8 | |
| 9 | #include "digi00x.h" |
| 10 | |
| 11 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
| 12 | struct snd_pcm_hw_rule *rule) |
| 13 | { |
| 14 | struct snd_interval *r = |
| 15 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
| 16 | const struct snd_interval *c = |
| 17 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
| 18 | struct snd_interval t = { |
| 19 | .min = UINT_MAX, .max = 0, .integer = 1, |
| 20 | }; |
| 21 | unsigned int i; |
| 22 | |
| 23 | for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { |
| 24 | if (!snd_interval_test(c, |
| 25 | snd_dg00x_stream_pcm_channels[i])) |
| 26 | continue; |
| 27 | |
| 28 | t.min = min(t.min, snd_dg00x_stream_rates[i]); |
| 29 | t.max = max(t.max, snd_dg00x_stream_rates[i]); |
| 30 | } |
| 31 | |
| 32 | return snd_interval_refine(r, &t); |
| 33 | } |
| 34 | |
| 35 | static int hw_rule_channels(struct snd_pcm_hw_params *params, |
| 36 | struct snd_pcm_hw_rule *rule) |
| 37 | { |
| 38 | struct snd_interval *c = |
| 39 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
| 40 | const struct snd_interval *r = |
| 41 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); |
| 42 | struct snd_interval t = { |
| 43 | .min = UINT_MAX, .max = 0, .integer = 1, |
| 44 | }; |
| 45 | unsigned int i; |
| 46 | |
| 47 | for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { |
| 48 | if (!snd_interval_test(r, snd_dg00x_stream_rates[i])) |
| 49 | continue; |
| 50 | |
| 51 | t.min = min(t.min, snd_dg00x_stream_pcm_channels[i]); |
| 52 | t.max = max(t.max, snd_dg00x_stream_pcm_channels[i]); |
| 53 | } |
| 54 | |
| 55 | return snd_interval_refine(c, &t); |
| 56 | } |
| 57 | |
| 58 | static int pcm_init_hw_params(struct snd_dg00x *dg00x, |
| 59 | struct snd_pcm_substream *substream) |
| 60 | { |
| 61 | static const struct snd_pcm_hardware hardware = { |
| 62 | .info = SNDRV_PCM_INFO_BATCH | |
| 63 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 64 | SNDRV_PCM_INFO_INTERLEAVED | |
| 65 | SNDRV_PCM_INFO_JOINT_DUPLEX | |
| 66 | SNDRV_PCM_INFO_MMAP | |
| 67 | SNDRV_PCM_INFO_MMAP_VALID, |
| 68 | .rates = SNDRV_PCM_RATE_44100 | |
| 69 | SNDRV_PCM_RATE_48000 | |
| 70 | SNDRV_PCM_RATE_88200 | |
| 71 | SNDRV_PCM_RATE_96000, |
| 72 | .rate_min = 44100, |
| 73 | .rate_max = 96000, |
| 74 | .channels_min = 10, |
| 75 | .channels_max = 18, |
| 76 | .period_bytes_min = 4 * 18, |
| 77 | .period_bytes_max = 4 * 18 * 2048, |
| 78 | .buffer_bytes_max = 4 * 18 * 2048 * 2, |
| 79 | .periods_min = 2, |
| 80 | .periods_max = UINT_MAX, |
| 81 | }; |
| 82 | struct amdtp_stream *s; |
| 83 | int err; |
| 84 | |
| 85 | substream->runtime->hw = hardware; |
| 86 | |
| 87 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { |
| 88 | substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; |
| 89 | s = &dg00x->tx_stream; |
| 90 | } else { |
| 91 | substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S16 | |
| 92 | SNDRV_PCM_FMTBIT_S32; |
| 93 | s = &dg00x->rx_stream; |
| 94 | } |
| 95 | |
| 96 | err = snd_pcm_hw_rule_add(substream->runtime, 0, |
| 97 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 98 | hw_rule_channels, NULL, |
| 99 | SNDRV_PCM_HW_PARAM_RATE, -1); |
| 100 | if (err < 0) |
| 101 | return err; |
| 102 | |
| 103 | err = snd_pcm_hw_rule_add(substream->runtime, 0, |
| 104 | SNDRV_PCM_HW_PARAM_RATE, |
| 105 | hw_rule_rate, NULL, |
| 106 | SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
| 107 | if (err < 0) |
| 108 | return err; |
| 109 | |
| 110 | return amdtp_dot_add_pcm_hw_constraints(s, substream->runtime); |
| 111 | } |
| 112 | |
| 113 | static int pcm_open(struct snd_pcm_substream *substream) |
| 114 | { |
| 115 | struct snd_dg00x *dg00x = substream->private_data; |
| 116 | enum snd_dg00x_clock clock; |
| 117 | bool detect; |
| 118 | unsigned int rate; |
| 119 | int err; |
| 120 | |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 121 | err = snd_dg00x_stream_lock_try(dg00x); |
| 122 | if (err < 0) |
| 123 | goto end; |
| 124 | |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 125 | err = pcm_init_hw_params(dg00x, substream); |
| 126 | if (err < 0) |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 127 | goto err_locked; |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 128 | |
| 129 | /* Check current clock source. */ |
| 130 | err = snd_dg00x_stream_get_clock(dg00x, &clock); |
| 131 | if (err < 0) |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 132 | goto err_locked; |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 133 | if (clock != SND_DG00X_CLOCK_INTERNAL) { |
| 134 | err = snd_dg00x_stream_check_external_clock(dg00x, &detect); |
| 135 | if (err < 0) |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 136 | goto err_locked; |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 137 | if (!detect) { |
| 138 | err = -EBUSY; |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 139 | goto err_locked; |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 140 | } |
| 141 | } |
| 142 | |
| 143 | if ((clock != SND_DG00X_CLOCK_INTERNAL) || |
| 144 | amdtp_stream_pcm_running(&dg00x->rx_stream) || |
| 145 | amdtp_stream_pcm_running(&dg00x->tx_stream)) { |
| 146 | err = snd_dg00x_stream_get_external_rate(dg00x, &rate); |
| 147 | if (err < 0) |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 148 | goto err_locked; |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 149 | substream->runtime->hw.rate_min = rate; |
| 150 | substream->runtime->hw.rate_max = rate; |
| 151 | } |
| 152 | |
| 153 | snd_pcm_set_sync(substream); |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 154 | end: |
| 155 | return err; |
| 156 | err_locked: |
| 157 | snd_dg00x_stream_lock_release(dg00x); |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 158 | return err; |
| 159 | } |
| 160 | |
| 161 | static int pcm_close(struct snd_pcm_substream *substream) |
| 162 | { |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 163 | struct snd_dg00x *dg00x = substream->private_data; |
| 164 | |
| 165 | snd_dg00x_stream_lock_release(dg00x); |
| 166 | |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 167 | return 0; |
| 168 | } |
| 169 | |
| 170 | static int pcm_capture_hw_params(struct snd_pcm_substream *substream, |
| 171 | struct snd_pcm_hw_params *hw_params) |
| 172 | { |
| 173 | struct snd_dg00x *dg00x = substream->private_data; |
| 174 | int err; |
| 175 | |
| 176 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, |
| 177 | params_buffer_bytes(hw_params)); |
| 178 | if (err < 0) |
| 179 | return err; |
| 180 | |
| 181 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 182 | mutex_lock(&dg00x->mutex); |
| 183 | dg00x->substreams_counter++; |
| 184 | mutex_unlock(&dg00x->mutex); |
| 185 | } |
| 186 | |
| 187 | amdtp_dot_set_pcm_format(&dg00x->tx_stream, params_format(hw_params)); |
| 188 | |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static int pcm_playback_hw_params(struct snd_pcm_substream *substream, |
| 193 | struct snd_pcm_hw_params *hw_params) |
| 194 | { |
| 195 | struct snd_dg00x *dg00x = substream->private_data; |
| 196 | int err; |
| 197 | |
| 198 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, |
| 199 | params_buffer_bytes(hw_params)); |
| 200 | if (err < 0) |
| 201 | return err; |
| 202 | |
| 203 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 204 | mutex_lock(&dg00x->mutex); |
| 205 | dg00x->substreams_counter++; |
| 206 | mutex_unlock(&dg00x->mutex); |
| 207 | } |
| 208 | |
| 209 | amdtp_dot_set_pcm_format(&dg00x->rx_stream, params_format(hw_params)); |
| 210 | |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | static int pcm_capture_hw_free(struct snd_pcm_substream *substream) |
| 215 | { |
| 216 | struct snd_dg00x *dg00x = substream->private_data; |
| 217 | |
| 218 | mutex_lock(&dg00x->mutex); |
| 219 | |
| 220 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) |
| 221 | dg00x->substreams_counter--; |
| 222 | |
| 223 | snd_dg00x_stream_stop_duplex(dg00x); |
| 224 | |
| 225 | mutex_unlock(&dg00x->mutex); |
| 226 | |
| 227 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
| 228 | } |
| 229 | |
| 230 | static int pcm_playback_hw_free(struct snd_pcm_substream *substream) |
| 231 | { |
| 232 | struct snd_dg00x *dg00x = substream->private_data; |
| 233 | |
| 234 | mutex_lock(&dg00x->mutex); |
| 235 | |
| 236 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) |
| 237 | dg00x->substreams_counter--; |
| 238 | |
| 239 | snd_dg00x_stream_stop_duplex(dg00x); |
| 240 | |
| 241 | mutex_unlock(&dg00x->mutex); |
| 242 | |
| 243 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
| 244 | } |
| 245 | |
| 246 | static int pcm_capture_prepare(struct snd_pcm_substream *substream) |
| 247 | { |
| 248 | struct snd_dg00x *dg00x = substream->private_data; |
| 249 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 250 | int err; |
| 251 | |
| 252 | mutex_lock(&dg00x->mutex); |
| 253 | |
| 254 | err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate); |
| 255 | if (err >= 0) |
| 256 | amdtp_stream_pcm_prepare(&dg00x->tx_stream); |
| 257 | |
| 258 | mutex_unlock(&dg00x->mutex); |
| 259 | |
| 260 | return err; |
| 261 | } |
| 262 | |
| 263 | static int pcm_playback_prepare(struct snd_pcm_substream *substream) |
| 264 | { |
| 265 | struct snd_dg00x *dg00x = substream->private_data; |
| 266 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 267 | int err; |
| 268 | |
| 269 | mutex_lock(&dg00x->mutex); |
| 270 | |
| 271 | err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate); |
| 272 | if (err >= 0) { |
| 273 | amdtp_stream_pcm_prepare(&dg00x->rx_stream); |
| 274 | amdtp_dot_reset(&dg00x->rx_stream); |
| 275 | } |
| 276 | |
| 277 | mutex_unlock(&dg00x->mutex); |
| 278 | |
| 279 | return err; |
| 280 | } |
| 281 | |
| 282 | static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) |
| 283 | { |
| 284 | struct snd_dg00x *dg00x = substream->private_data; |
| 285 | |
| 286 | switch (cmd) { |
| 287 | case SNDRV_PCM_TRIGGER_START: |
| 288 | amdtp_stream_pcm_trigger(&dg00x->tx_stream, substream); |
| 289 | break; |
| 290 | case SNDRV_PCM_TRIGGER_STOP: |
| 291 | amdtp_stream_pcm_trigger(&dg00x->tx_stream, NULL); |
| 292 | break; |
| 293 | default: |
| 294 | return -EINVAL; |
| 295 | } |
| 296 | |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) |
| 301 | { |
| 302 | struct snd_dg00x *dg00x = substream->private_data; |
| 303 | |
| 304 | switch (cmd) { |
| 305 | case SNDRV_PCM_TRIGGER_START: |
| 306 | amdtp_stream_pcm_trigger(&dg00x->rx_stream, substream); |
| 307 | break; |
| 308 | case SNDRV_PCM_TRIGGER_STOP: |
| 309 | amdtp_stream_pcm_trigger(&dg00x->rx_stream, NULL); |
| 310 | break; |
| 311 | default: |
| 312 | return -EINVAL; |
| 313 | } |
| 314 | |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) |
| 319 | { |
| 320 | struct snd_dg00x *dg00x = sbstrm->private_data; |
| 321 | |
| 322 | return amdtp_stream_pcm_pointer(&dg00x->tx_stream); |
| 323 | } |
| 324 | |
| 325 | static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) |
| 326 | { |
| 327 | struct snd_dg00x *dg00x = sbstrm->private_data; |
| 328 | |
| 329 | return amdtp_stream_pcm_pointer(&dg00x->rx_stream); |
| 330 | } |
| 331 | |
Julia Lawall | 5116ffc | 2016-09-02 00:13:11 +0200 | [diff] [blame] | 332 | static const struct snd_pcm_ops pcm_capture_ops = { |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 333 | .open = pcm_open, |
| 334 | .close = pcm_close, |
| 335 | .ioctl = snd_pcm_lib_ioctl, |
| 336 | .hw_params = pcm_capture_hw_params, |
| 337 | .hw_free = pcm_capture_hw_free, |
| 338 | .prepare = pcm_capture_prepare, |
| 339 | .trigger = pcm_capture_trigger, |
| 340 | .pointer = pcm_capture_pointer, |
| 341 | .page = snd_pcm_lib_get_vmalloc_page, |
| 342 | }; |
| 343 | |
Julia Lawall | 5116ffc | 2016-09-02 00:13:11 +0200 | [diff] [blame] | 344 | static const struct snd_pcm_ops pcm_playback_ops = { |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 345 | .open = pcm_open, |
| 346 | .close = pcm_close, |
| 347 | .ioctl = snd_pcm_lib_ioctl, |
| 348 | .hw_params = pcm_playback_hw_params, |
| 349 | .hw_free = pcm_playback_hw_free, |
| 350 | .prepare = pcm_playback_prepare, |
| 351 | .trigger = pcm_playback_trigger, |
| 352 | .pointer = pcm_playback_pointer, |
| 353 | .page = snd_pcm_lib_get_vmalloc_page, |
| 354 | .mmap = snd_pcm_lib_mmap_vmalloc, |
| 355 | }; |
| 356 | |
| 357 | int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x) |
| 358 | { |
| 359 | struct snd_pcm *pcm; |
| 360 | int err; |
| 361 | |
| 362 | err = snd_pcm_new(dg00x->card, dg00x->card->driver, 0, 1, 1, &pcm); |
| 363 | if (err < 0) |
| 364 | return err; |
| 365 | |
| 366 | pcm->private_data = dg00x; |
| 367 | snprintf(pcm->name, sizeof(pcm->name), |
| 368 | "%s PCM", dg00x->card->shortname); |
| 369 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops); |
| 370 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops); |
| 371 | |
| 372 | return 0; |
| 373 | } |