| 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | // |
| 3 | // soc-pcm.c -- ALSA SoC PCM |
| 4 | // |
| 5 | // Copyright 2005 Wolfson Microelectronics PLC. |
| 6 | // Copyright 2005 Openedhand Ltd. |
| 7 | // Copyright (C) 2010 Slimlogic Ltd. |
| 8 | // Copyright (C) 2010 Texas Instruments Inc. |
| 9 | // |
| 10 | // Authors: Liam Girdwood <lrg@ti.com> |
| 11 | // Mark Brown <broonie@opensource.wolfsonmicro.com> |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/pinctrl/consumer.h> |
| 17 | #include <linux/pm_runtime.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/workqueue.h> |
| 20 | #include <linux/export.h> |
| 21 | #include <linux/debugfs.h> |
| 22 | #include <sound/core.h> |
| 23 | #include <sound/pcm.h> |
| 24 | #include <sound/pcm_params.h> |
| 25 | #include <sound/soc.h> |
| 26 | #include <sound/soc-dpcm.h> |
| 27 | #include <sound/initval.h> |
| 28 | |
| 29 | #define DPCM_MAX_BE_USERS 8 |
| 30 | |
| 31 | /** |
| 32 | * snd_soc_runtime_activate() - Increment active count for PCM runtime components |
| 33 | * @rtd: ASoC PCM runtime that is activated |
| 34 | * @stream: Direction of the PCM stream |
| 35 | * |
| 36 | * Increments the active count for all the DAIs and components attached to a PCM |
| 37 | * runtime. Should typically be called when a stream is opened. |
| 38 | * |
| 39 | * Must be called with the rtd->card->pcm_mutex being held |
| 40 | */ |
| 41 | void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream) |
| 42 | { |
| 43 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 44 | struct snd_soc_dai *codec_dai; |
| 45 | int i; |
| 46 | |
| 47 | lockdep_assert_held(&rtd->card->pcm_mutex); |
| 48 | |
| 49 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 50 | cpu_dai->playback_active++; |
| 51 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 52 | codec_dai->playback_active++; |
| 53 | } else { |
| 54 | cpu_dai->capture_active++; |
| 55 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 56 | codec_dai->capture_active++; |
| 57 | } |
| 58 | |
| 59 | cpu_dai->active++; |
| 60 | cpu_dai->component->active++; |
| 61 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 62 | codec_dai->active++; |
| 63 | codec_dai->component->active++; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components |
| 69 | * @rtd: ASoC PCM runtime that is deactivated |
| 70 | * @stream: Direction of the PCM stream |
| 71 | * |
| 72 | * Decrements the active count for all the DAIs and components attached to a PCM |
| 73 | * runtime. Should typically be called when a stream is closed. |
| 74 | * |
| 75 | * Must be called with the rtd->card->pcm_mutex being held |
| 76 | */ |
| 77 | void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream) |
| 78 | { |
| 79 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 80 | struct snd_soc_dai *codec_dai; |
| 81 | int i; |
| 82 | |
| 83 | lockdep_assert_held(&rtd->card->pcm_mutex); |
| 84 | |
| 85 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 86 | cpu_dai->playback_active--; |
| 87 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 88 | codec_dai->playback_active--; |
| 89 | } else { |
| 90 | cpu_dai->capture_active--; |
| 91 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 92 | codec_dai->capture_active--; |
| 93 | } |
| 94 | |
| 95 | cpu_dai->active--; |
| 96 | cpu_dai->component->active--; |
| 97 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 98 | codec_dai->component->active--; |
| 99 | codec_dai->active--; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay |
| 105 | * @rtd: The ASoC PCM runtime that should be checked. |
| 106 | * |
| 107 | * This function checks whether the power down delay should be ignored for a |
| 108 | * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has |
| 109 | * been configured to ignore the delay, or if none of the components benefits |
| 110 | * from having the delay. |
| 111 | */ |
| 112 | bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd) |
| 113 | { |
| 114 | struct snd_soc_rtdcom_list *rtdcom; |
| 115 | struct snd_soc_component *component; |
| 116 | bool ignore = true; |
| 117 | |
| 118 | if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time) |
| 119 | return true; |
| 120 | |
| 121 | for_each_rtd_components(rtd, rtdcom, component) |
| 122 | ignore &= !component->driver->use_pmdown_time; |
| 123 | |
| 124 | return ignore; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters |
| 129 | * @substream: the pcm substream |
| 130 | * @hw: the hardware parameters |
| 131 | * |
| 132 | * Sets the substream runtime hardware parameters. |
| 133 | */ |
| 134 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, |
| 135 | const struct snd_pcm_hardware *hw) |
| 136 | { |
| 137 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 138 | runtime->hw.info = hw->info; |
| 139 | runtime->hw.formats = hw->formats; |
| 140 | runtime->hw.period_bytes_min = hw->period_bytes_min; |
| 141 | runtime->hw.period_bytes_max = hw->period_bytes_max; |
| 142 | runtime->hw.periods_min = hw->periods_min; |
| 143 | runtime->hw.periods_max = hw->periods_max; |
| 144 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; |
| 145 | runtime->hw.fifo_size = hw->fifo_size; |
| 146 | return 0; |
| 147 | } |
| 148 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); |
| 149 | |
| 150 | /* DPCM stream event, send event to FE and all active BEs. */ |
| 151 | int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, |
| 152 | int event) |
| 153 | { |
| 154 | struct snd_soc_dpcm *dpcm; |
| 155 | |
| 156 | for_each_dpcm_be(fe, dir, dpcm) { |
| 157 | |
| 158 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 159 | |
| 160 | dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", |
| 161 | be->dai_link->name, event, dir); |
| 162 | |
| 163 | if ((event == SND_SOC_DAPM_STREAM_STOP) && |
| 164 | (be->dpcm[dir].users >= 1)) |
| 165 | continue; |
| 166 | |
| 167 | snd_soc_dapm_stream_event(be, dir, event); |
| 168 | } |
| 169 | |
| 170 | snd_soc_dapm_stream_event(fe, dir, event); |
| 171 | |
| 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, |
| 176 | struct snd_soc_dai *soc_dai) |
| 177 | { |
| 178 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 179 | int ret; |
| 180 | |
| 181 | if (soc_dai->rate && (soc_dai->driver->symmetric_rates || |
| 182 | rtd->dai_link->symmetric_rates)) { |
| 183 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", |
| 184 | soc_dai->rate); |
| 185 | |
| 186 | ret = snd_pcm_hw_constraint_single(substream->runtime, |
| 187 | SNDRV_PCM_HW_PARAM_RATE, |
| 188 | soc_dai->rate); |
| 189 | if (ret < 0) { |
| 190 | dev_err(soc_dai->dev, |
| 191 | "ASoC: Unable to apply rate constraint: %d\n", |
| 192 | ret); |
| 193 | return ret; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | if (soc_dai->channels && (soc_dai->driver->symmetric_channels || |
| 198 | rtd->dai_link->symmetric_channels)) { |
| 199 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n", |
| 200 | soc_dai->channels); |
| 201 | |
| 202 | ret = snd_pcm_hw_constraint_single(substream->runtime, |
| 203 | SNDRV_PCM_HW_PARAM_CHANNELS, |
| 204 | soc_dai->channels); |
| 205 | if (ret < 0) { |
| 206 | dev_err(soc_dai->dev, |
| 207 | "ASoC: Unable to apply channel symmetry constraint: %d\n", |
| 208 | ret); |
| 209 | return ret; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits || |
| 214 | rtd->dai_link->symmetric_samplebits)) { |
| 215 | dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n", |
| 216 | soc_dai->sample_bits); |
| 217 | |
| 218 | ret = snd_pcm_hw_constraint_single(substream->runtime, |
| 219 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| 220 | soc_dai->sample_bits); |
| 221 | if (ret < 0) { |
| 222 | dev_err(soc_dai->dev, |
| 223 | "ASoC: Unable to apply sample bits symmetry constraint: %d\n", |
| 224 | ret); |
| 225 | return ret; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, |
| 233 | struct snd_pcm_hw_params *params) |
| 234 | { |
| 235 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 236 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 237 | struct snd_soc_dai *codec_dai; |
| 238 | unsigned int rate, channels, sample_bits, symmetry, i; |
| 239 | |
| 240 | rate = params_rate(params); |
| 241 | channels = params_channels(params); |
| 242 | sample_bits = snd_pcm_format_physical_width(params_format(params)); |
| 243 | |
| 244 | /* reject unmatched parameters when applying symmetry */ |
| 245 | symmetry = cpu_dai->driver->symmetric_rates || |
| 246 | rtd->dai_link->symmetric_rates; |
| 247 | |
| 248 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 249 | symmetry |= codec_dai->driver->symmetric_rates; |
| 250 | |
| 251 | if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) { |
| 252 | dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n", |
| 253 | cpu_dai->rate, rate); |
| 254 | return -EINVAL; |
| 255 | } |
| 256 | |
| 257 | symmetry = cpu_dai->driver->symmetric_channels || |
| 258 | rtd->dai_link->symmetric_channels; |
| 259 | |
| 260 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 261 | symmetry |= codec_dai->driver->symmetric_channels; |
| 262 | |
| 263 | if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) { |
| 264 | dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n", |
| 265 | cpu_dai->channels, channels); |
| 266 | return -EINVAL; |
| 267 | } |
| 268 | |
| 269 | symmetry = cpu_dai->driver->symmetric_samplebits || |
| 270 | rtd->dai_link->symmetric_samplebits; |
| 271 | |
| 272 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 273 | symmetry |= codec_dai->driver->symmetric_samplebits; |
| 274 | |
| 275 | if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) { |
| 276 | dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n", |
| 277 | cpu_dai->sample_bits, sample_bits); |
| 278 | return -EINVAL; |
| 279 | } |
| 280 | |
| 281 | return 0; |
| 282 | } |
| 283 | |
| 284 | static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream) |
| 285 | { |
| 286 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 287 | struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver; |
| 288 | struct snd_soc_dai_link *link = rtd->dai_link; |
| 289 | struct snd_soc_dai *codec_dai; |
| 290 | unsigned int symmetry, i; |
| 291 | |
| 292 | symmetry = cpu_driver->symmetric_rates || link->symmetric_rates || |
| 293 | cpu_driver->symmetric_channels || link->symmetric_channels || |
| 294 | cpu_driver->symmetric_samplebits || link->symmetric_samplebits; |
| 295 | |
| 296 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 297 | symmetry = symmetry || |
| 298 | codec_dai->driver->symmetric_rates || |
| 299 | codec_dai->driver->symmetric_channels || |
| 300 | codec_dai->driver->symmetric_samplebits; |
| 301 | |
| 302 | return symmetry; |
| 303 | } |
| 304 | |
| 305 | static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) |
| 306 | { |
| 307 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 308 | int ret; |
| 309 | |
| 310 | if (!bits) |
| 311 | return; |
| 312 | |
| 313 | ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits); |
| 314 | if (ret != 0) |
| 315 | dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n", |
| 316 | bits, ret); |
| 317 | } |
| 318 | |
| 319 | static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) |
| 320 | { |
| 321 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 322 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 323 | struct snd_soc_dai *codec_dai; |
| 324 | int i; |
| 325 | unsigned int bits = 0, cpu_bits; |
| 326 | |
| 327 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 328 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 329 | if (codec_dai->driver->playback.sig_bits == 0) { |
| 330 | bits = 0; |
| 331 | break; |
| 332 | } |
| 333 | bits = max(codec_dai->driver->playback.sig_bits, bits); |
| 334 | } |
| 335 | cpu_bits = cpu_dai->driver->playback.sig_bits; |
| 336 | } else { |
| 337 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 338 | if (codec_dai->driver->capture.sig_bits == 0) { |
| 339 | bits = 0; |
| 340 | break; |
| 341 | } |
| 342 | bits = max(codec_dai->driver->capture.sig_bits, bits); |
| 343 | } |
| 344 | cpu_bits = cpu_dai->driver->capture.sig_bits; |
| 345 | } |
| 346 | |
| 347 | soc_pcm_set_msb(substream, bits); |
| 348 | soc_pcm_set_msb(substream, cpu_bits); |
| 349 | } |
| 350 | |
| 351 | static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) |
| 352 | { |
| 353 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 354 | struct snd_pcm_hardware *hw = &runtime->hw; |
| 355 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 356 | struct snd_soc_dai *codec_dai; |
| 357 | struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver; |
| 358 | struct snd_soc_dai_driver *codec_dai_drv; |
| 359 | struct snd_soc_pcm_stream *codec_stream; |
| 360 | struct snd_soc_pcm_stream *cpu_stream; |
| 361 | unsigned int chan_min = 0, chan_max = UINT_MAX; |
| 362 | unsigned int rate_min = 0, rate_max = UINT_MAX; |
| 363 | unsigned int rates = UINT_MAX; |
| 364 | u64 formats = ULLONG_MAX; |
| 365 | int i; |
| 366 | |
| 367 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 368 | cpu_stream = &cpu_dai_drv->playback; |
| 369 | else |
| 370 | cpu_stream = &cpu_dai_drv->capture; |
| 371 | |
| 372 | /* first calculate min/max only for CODECs in the DAI link */ |
| 373 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 374 | |
| 375 | /* |
| 376 | * Skip CODECs which don't support the current stream type. |
| 377 | * Otherwise, since the rate, channel, and format values will |
| 378 | * zero in that case, we would have no usable settings left, |
| 379 | * causing the resulting setup to fail. |
| 380 | * At least one CODEC should match, otherwise we should have |
| 381 | * bailed out on a higher level, since there would be no |
| 382 | * CODEC to support the transfer direction in that case. |
| 383 | */ |
| 384 | if (!snd_soc_dai_stream_valid(codec_dai, |
| 385 | substream->stream)) |
| 386 | continue; |
| 387 | |
| 388 | codec_dai_drv = codec_dai->driver; |
| 389 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 390 | codec_stream = &codec_dai_drv->playback; |
| 391 | else |
| 392 | codec_stream = &codec_dai_drv->capture; |
| 393 | chan_min = max(chan_min, codec_stream->channels_min); |
| 394 | chan_max = min(chan_max, codec_stream->channels_max); |
| 395 | rate_min = max(rate_min, codec_stream->rate_min); |
| 396 | rate_max = min_not_zero(rate_max, codec_stream->rate_max); |
| 397 | formats &= codec_stream->formats; |
| 398 | rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates); |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * chan min/max cannot be enforced if there are multiple CODEC DAIs |
| 403 | * connected to a single CPU DAI, use CPU DAI's directly and let |
| 404 | * channel allocation be fixed up later |
| 405 | */ |
| 406 | if (rtd->num_codecs > 1) { |
| 407 | chan_min = cpu_stream->channels_min; |
| 408 | chan_max = cpu_stream->channels_max; |
| 409 | } |
| 410 | |
| 411 | hw->channels_min = max(chan_min, cpu_stream->channels_min); |
| 412 | hw->channels_max = min(chan_max, cpu_stream->channels_max); |
| 413 | if (hw->formats) |
| 414 | hw->formats &= formats & cpu_stream->formats; |
| 415 | else |
| 416 | hw->formats = formats & cpu_stream->formats; |
| 417 | hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates); |
| 418 | |
| 419 | snd_pcm_limit_hw_rates(runtime); |
| 420 | |
| 421 | hw->rate_min = max(hw->rate_min, cpu_stream->rate_min); |
| 422 | hw->rate_min = max(hw->rate_min, rate_min); |
| 423 | hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); |
| 424 | hw->rate_max = min_not_zero(hw->rate_max, rate_max); |
| 425 | } |
| 426 | |
| 427 | static int soc_pcm_components_open(struct snd_pcm_substream *substream, |
| 428 | struct snd_soc_component **last) |
| 429 | { |
| 430 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 431 | struct snd_soc_rtdcom_list *rtdcom; |
| 432 | struct snd_soc_component *component; |
| 433 | int ret = 0; |
| 434 | |
| 435 | for_each_rtd_components(rtd, rtdcom, component) { |
| 436 | *last = component; |
| 437 | |
| 438 | ret = snd_soc_component_module_get_when_open(component); |
| 439 | if (ret < 0) { |
| 440 | dev_err(component->dev, |
| 441 | "ASoC: can't get module %s\n", |
| 442 | component->name); |
| 443 | return ret; |
| 444 | } |
| 445 | |
| 446 | ret = snd_soc_component_open(component, substream); |
| 447 | if (ret < 0) { |
| 448 | dev_err(component->dev, |
| 449 | "ASoC: can't open component %s: %d\n", |
| 450 | component->name, ret); |
| 451 | return ret; |
| 452 | } |
| 453 | } |
| 454 | *last = NULL; |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | static int soc_pcm_components_close(struct snd_pcm_substream *substream, |
| 459 | struct snd_soc_component *last) |
| 460 | { |
| 461 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 462 | struct snd_soc_rtdcom_list *rtdcom; |
| 463 | struct snd_soc_component *component; |
| 464 | int ret = 0; |
| 465 | |
| 466 | for_each_rtd_components(rtd, rtdcom, component) { |
| 467 | if (component == last) |
| 468 | break; |
| 469 | |
| 470 | ret |= snd_soc_component_close(component, substream); |
| 471 | snd_soc_component_module_put_when_close(component); |
| 472 | } |
| 473 | |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | /* |
| 478 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is |
| 479 | * then initialized and any private data can be allocated. This also calls |
| 480 | * startup for the cpu DAI, component, machine and codec DAI. |
| 481 | */ |
| 482 | static int soc_pcm_open(struct snd_pcm_substream *substream) |
| 483 | { |
| 484 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 485 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 486 | struct snd_soc_component *component; |
| 487 | struct snd_soc_rtdcom_list *rtdcom; |
| 488 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 489 | struct snd_soc_dai *codec_dai; |
| 490 | const char *codec_dai_name = "multicodec"; |
| 491 | int i, ret = 0; |
| 492 | |
| 493 | pinctrl_pm_select_default_state(cpu_dai->dev); |
| 494 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 495 | pinctrl_pm_select_default_state(codec_dai->dev); |
| 496 | |
| 497 | for_each_rtd_components(rtd, rtdcom, component) { |
| 498 | pm_runtime_get_sync(component->dev); |
| 499 | } |
| 500 | |
| 501 | mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| 502 | |
| 503 | /* startup the audio subsystem */ |
| 504 | ret = snd_soc_dai_startup(cpu_dai, substream); |
| 505 | if (ret < 0) { |
| 506 | dev_err(cpu_dai->dev, "ASoC: can't open interface %s: %d\n", |
| 507 | cpu_dai->name, ret); |
| 508 | goto out; |
| 509 | } |
| 510 | |
| 511 | ret = soc_pcm_components_open(substream, &component); |
| 512 | if (ret < 0) |
| 513 | goto component_err; |
| 514 | |
| 515 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 516 | ret = snd_soc_dai_startup(codec_dai, substream); |
| 517 | if (ret < 0) { |
| 518 | dev_err(codec_dai->dev, |
| 519 | "ASoC: can't open codec %s: %d\n", |
| 520 | codec_dai->name, ret); |
| 521 | goto codec_dai_err; |
| 522 | } |
| 523 | |
| 524 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 525 | codec_dai->tx_mask = 0; |
| 526 | else |
| 527 | codec_dai->rx_mask = 0; |
| 528 | } |
| 529 | |
| 530 | if (rtd->dai_link->ops->startup) { |
| 531 | ret = rtd->dai_link->ops->startup(substream); |
| 532 | if (ret < 0) { |
| 533 | pr_err("ASoC: %s startup failed: %d\n", |
| 534 | rtd->dai_link->name, ret); |
| 535 | goto machine_err; |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | /* Dynamic PCM DAI links compat checks use dynamic capabilities */ |
| 540 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) |
| 541 | goto dynamic; |
| 542 | |
| 543 | /* Check that the codec and cpu DAIs are compatible */ |
| 544 | soc_pcm_init_runtime_hw(substream); |
| 545 | |
| 546 | if (rtd->num_codecs == 1) |
| 547 | codec_dai_name = rtd->codec_dai->name; |
| 548 | |
| 549 | if (soc_pcm_has_symmetry(substream)) |
| 550 | runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
| 551 | |
| 552 | ret = -EINVAL; |
| 553 | if (!runtime->hw.rates) { |
| 554 | printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", |
| 555 | codec_dai_name, cpu_dai->name); |
| 556 | goto config_err; |
| 557 | } |
| 558 | if (!runtime->hw.formats) { |
| 559 | printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", |
| 560 | codec_dai_name, cpu_dai->name); |
| 561 | goto config_err; |
| 562 | } |
| 563 | if (!runtime->hw.channels_min || !runtime->hw.channels_max || |
| 564 | runtime->hw.channels_min > runtime->hw.channels_max) { |
| 565 | printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", |
| 566 | codec_dai_name, cpu_dai->name); |
| 567 | goto config_err; |
| 568 | } |
| 569 | |
| 570 | soc_pcm_apply_msb(substream); |
| 571 | |
| 572 | /* Symmetry only applies if we've already got an active stream. */ |
| 573 | if (cpu_dai->active) { |
| 574 | ret = soc_pcm_apply_symmetry(substream, cpu_dai); |
| 575 | if (ret != 0) |
| 576 | goto config_err; |
| 577 | } |
| 578 | |
| 579 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 580 | if (codec_dai->active) { |
| 581 | ret = soc_pcm_apply_symmetry(substream, codec_dai); |
| 582 | if (ret != 0) |
| 583 | goto config_err; |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | pr_debug("ASoC: %s <-> %s info:\n", |
| 588 | codec_dai_name, cpu_dai->name); |
| 589 | pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); |
| 590 | pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, |
| 591 | runtime->hw.channels_max); |
| 592 | pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, |
| 593 | runtime->hw.rate_max); |
| 594 | |
| 595 | dynamic: |
| 596 | |
| 597 | snd_soc_runtime_activate(rtd, substream->stream); |
| 598 | |
| 599 | mutex_unlock(&rtd->card->pcm_mutex); |
| 600 | return 0; |
| 601 | |
| 602 | config_err: |
| 603 | if (rtd->dai_link->ops->shutdown) |
| 604 | rtd->dai_link->ops->shutdown(substream); |
| 605 | |
| 606 | machine_err: |
| 607 | i = rtd->num_codecs; |
| 608 | |
| 609 | codec_dai_err: |
| 610 | for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) |
| 611 | snd_soc_dai_shutdown(codec_dai, substream); |
| 612 | |
| 613 | component_err: |
| 614 | soc_pcm_components_close(substream, component); |
| 615 | |
| 616 | snd_soc_dai_shutdown(cpu_dai, substream); |
| 617 | out: |
| 618 | mutex_unlock(&rtd->card->pcm_mutex); |
| 619 | |
| 620 | for_each_rtd_components(rtd, rtdcom, component) { |
| 621 | pm_runtime_mark_last_busy(component->dev); |
| 622 | pm_runtime_put_autosuspend(component->dev); |
| 623 | } |
| 624 | |
| 625 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 626 | if (!codec_dai->active) |
| 627 | pinctrl_pm_select_sleep_state(codec_dai->dev); |
| 628 | } |
| 629 | if (!cpu_dai->active) |
| 630 | pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| 631 | |
| 632 | return ret; |
| 633 | } |
| 634 | |
| 635 | /* |
| 636 | * Power down the audio subsystem pmdown_time msecs after close is called. |
| 637 | * This is to ensure there are no pops or clicks in between any music tracks |
| 638 | * due to DAPM power cycling. |
| 639 | */ |
| 640 | static void close_delayed_work(struct work_struct *work) |
| 641 | { |
| 642 | struct snd_soc_pcm_runtime *rtd = |
| 643 | container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); |
| 644 | struct snd_soc_dai *codec_dai = rtd->codec_dais[0]; |
| 645 | |
| 646 | mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| 647 | |
| 648 | dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", |
| 649 | codec_dai->driver->playback.stream_name, |
| 650 | codec_dai->playback_active ? "active" : "inactive", |
| 651 | rtd->pop_wait ? "yes" : "no"); |
| 652 | |
| 653 | /* are we waiting on this codec DAI stream */ |
| 654 | if (rtd->pop_wait == 1) { |
| 655 | rtd->pop_wait = 0; |
| 656 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, |
| 657 | SND_SOC_DAPM_STREAM_STOP); |
| 658 | } |
| 659 | |
| 660 | mutex_unlock(&rtd->card->pcm_mutex); |
| 661 | } |
| 662 | |
| 663 | static void codec2codec_close_delayed_work(struct work_struct *work) |
| 664 | { |
| 665 | /* |
| 666 | * Currently nothing to do for c2c links |
| 667 | * Since c2c links are internal nodes in the DAPM graph and |
| 668 | * don't interface with the outside world or application layer |
| 669 | * we don't have to do any special handling on close. |
| 670 | */ |
| 671 | } |
| 672 | |
| 673 | /* |
| 674 | * Called by ALSA when a PCM substream is closed. Private data can be |
| 675 | * freed here. The cpu DAI, codec DAI, machine and components are also |
| 676 | * shutdown. |
| 677 | */ |
| 678 | static int soc_pcm_close(struct snd_pcm_substream *substream) |
| 679 | { |
| 680 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 681 | struct snd_soc_component *component; |
| 682 | struct snd_soc_rtdcom_list *rtdcom; |
| 683 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 684 | struct snd_soc_dai *codec_dai; |
| 685 | int i; |
| 686 | |
| 687 | mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| 688 | |
| 689 | snd_soc_runtime_deactivate(rtd, substream->stream); |
| 690 | |
| 691 | /* clear the corresponding DAIs rate when inactive */ |
| 692 | if (!cpu_dai->active) |
| 693 | cpu_dai->rate = 0; |
| 694 | |
| 695 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 696 | if (!codec_dai->active) |
| 697 | codec_dai->rate = 0; |
| 698 | } |
| 699 | |
| 700 | snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream); |
| 701 | |
| 702 | snd_soc_dai_shutdown(cpu_dai, substream); |
| 703 | |
| 704 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 705 | snd_soc_dai_shutdown(codec_dai, substream); |
| 706 | |
| 707 | if (rtd->dai_link->ops->shutdown) |
| 708 | rtd->dai_link->ops->shutdown(substream); |
| 709 | |
| 710 | soc_pcm_components_close(substream, NULL); |
| 711 | |
| 712 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 713 | if (snd_soc_runtime_ignore_pmdown_time(rtd)) { |
| 714 | /* powered down playback stream now */ |
| 715 | snd_soc_dapm_stream_event(rtd, |
| 716 | SNDRV_PCM_STREAM_PLAYBACK, |
| 717 | SND_SOC_DAPM_STREAM_STOP); |
| 718 | } else { |
| 719 | /* start delayed pop wq here for playback streams */ |
| 720 | rtd->pop_wait = 1; |
| 721 | queue_delayed_work(system_power_efficient_wq, |
| 722 | &rtd->delayed_work, |
| 723 | msecs_to_jiffies(rtd->pmdown_time)); |
| 724 | } |
| 725 | } else { |
| 726 | /* capture streams can be powered down now */ |
| 727 | snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, |
| 728 | SND_SOC_DAPM_STREAM_STOP); |
| 729 | } |
| 730 | |
| 731 | mutex_unlock(&rtd->card->pcm_mutex); |
| 732 | |
| 733 | for_each_rtd_components(rtd, rtdcom, component) { |
| 734 | pm_runtime_mark_last_busy(component->dev); |
| 735 | pm_runtime_put_autosuspend(component->dev); |
| 736 | } |
| 737 | |
| 738 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 739 | if (!codec_dai->active) |
| 740 | pinctrl_pm_select_sleep_state(codec_dai->dev); |
| 741 | } |
| 742 | if (!cpu_dai->active) |
| 743 | pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| 744 | |
| 745 | return 0; |
| 746 | } |
| 747 | |
| 748 | /* |
| 749 | * Called by ALSA when the PCM substream is prepared, can set format, sample |
| 750 | * rate, etc. This function is non atomic and can be called multiple times, |
| 751 | * it can refer to the runtime info. |
| 752 | */ |
| 753 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) |
| 754 | { |
| 755 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 756 | struct snd_soc_component *component; |
| 757 | struct snd_soc_rtdcom_list *rtdcom; |
| 758 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 759 | struct snd_soc_dai *codec_dai; |
| 760 | int i, ret = 0; |
| 761 | |
| 762 | mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| 763 | |
| 764 | if (rtd->dai_link->ops->prepare) { |
| 765 | ret = rtd->dai_link->ops->prepare(substream); |
| 766 | if (ret < 0) { |
| 767 | dev_err(rtd->card->dev, "ASoC: machine prepare error:" |
| 768 | " %d\n", ret); |
| 769 | goto out; |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | for_each_rtd_components(rtd, rtdcom, component) { |
| 774 | ret = snd_soc_component_prepare(component, substream); |
| 775 | if (ret < 0) { |
| 776 | dev_err(component->dev, |
| 777 | "ASoC: platform prepare error: %d\n", ret); |
| 778 | goto out; |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 783 | ret = snd_soc_dai_prepare(codec_dai, substream); |
| 784 | if (ret < 0) { |
| 785 | dev_err(codec_dai->dev, |
| 786 | "ASoC: codec DAI prepare error: %d\n", |
| 787 | ret); |
| 788 | goto out; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | ret = snd_soc_dai_prepare(cpu_dai, substream); |
| 793 | if (ret < 0) { |
| 794 | dev_err(cpu_dai->dev, |
| 795 | "ASoC: cpu DAI prepare error: %d\n", ret); |
| 796 | goto out; |
| 797 | } |
| 798 | |
| 799 | /* cancel any delayed stream shutdown that is pending */ |
| 800 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 801 | rtd->pop_wait) { |
| 802 | rtd->pop_wait = 0; |
| 803 | cancel_delayed_work(&rtd->delayed_work); |
| 804 | } |
| 805 | |
| 806 | snd_soc_dapm_stream_event(rtd, substream->stream, |
| 807 | SND_SOC_DAPM_STREAM_START); |
| 808 | |
| 809 | for_each_rtd_codec_dai(rtd, i, codec_dai) |
| 810 | snd_soc_dai_digital_mute(codec_dai, 0, |
| 811 | substream->stream); |
| 812 | snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream); |
| 813 | |
| 814 | out: |
| 815 | mutex_unlock(&rtd->card->pcm_mutex); |
| 816 | return ret; |
| 817 | } |
| 818 | |
| 819 | static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params, |
| 820 | unsigned int mask) |
| 821 | { |
| 822 | struct snd_interval *interval; |
| 823 | int channels = hweight_long(mask); |
| 824 | |
| 825 | interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); |
| 826 | interval->min = channels; |
| 827 | interval->max = channels; |
| 828 | } |
| 829 | |
| 830 | static int soc_pcm_components_hw_free(struct snd_pcm_substream *substream, |
| 831 | struct snd_soc_component *last) |
| 832 | { |
| 833 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 834 | struct snd_soc_rtdcom_list *rtdcom; |
| 835 | struct snd_soc_component *component; |
| 836 | int ret = 0; |
| 837 | |
| 838 | for_each_rtd_components(rtd, rtdcom, component) { |
| 839 | if (component == last) |
| 840 | break; |
| 841 | |
| 842 | ret |= snd_soc_component_hw_free(component, substream); |
| 843 | } |
| 844 | |
| 845 | return ret; |
| 846 | } |
| 847 | |
| 848 | /* |
| 849 | * Called by ALSA when the hardware params are set by application. This |
| 850 | * function can also be called multiple times and can allocate buffers |
| 851 | * (using snd_pcm_lib_* ). It's non-atomic. |
| 852 | */ |
| 853 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, |
| 854 | struct snd_pcm_hw_params *params) |
| 855 | { |
| 856 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 857 | struct snd_soc_component *component; |
| 858 | struct snd_soc_rtdcom_list *rtdcom; |
| 859 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 860 | struct snd_soc_dai *codec_dai; |
| 861 | int i, ret = 0; |
| 862 | |
| 863 | mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| 864 | if (rtd->dai_link->ops->hw_params) { |
| 865 | ret = rtd->dai_link->ops->hw_params(substream, params); |
| 866 | if (ret < 0) { |
| 867 | dev_err(rtd->card->dev, "ASoC: machine hw_params" |
| 868 | " failed: %d\n", ret); |
| 869 | goto out; |
| 870 | } |
| 871 | } |
| 872 | |
| 873 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 874 | struct snd_pcm_hw_params codec_params; |
| 875 | |
| 876 | /* |
| 877 | * Skip CODECs which don't support the current stream type, |
| 878 | * the idea being that if a CODEC is not used for the currently |
| 879 | * set up transfer direction, it should not need to be |
| 880 | * configured, especially since the configuration used might |
| 881 | * not even be supported by that CODEC. There may be cases |
| 882 | * however where a CODEC needs to be set up although it is |
| 883 | * actually not being used for the transfer, e.g. if a |
| 884 | * capture-only CODEC is acting as an LRCLK and/or BCLK master |
| 885 | * for the DAI link including a playback-only CODEC. |
| 886 | * If this becomes necessary, we will have to augment the |
| 887 | * machine driver setup with information on how to act, so |
| 888 | * we can do the right thing here. |
| 889 | */ |
| 890 | if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) |
| 891 | continue; |
| 892 | |
| 893 | /* copy params for each codec */ |
| 894 | codec_params = *params; |
| 895 | |
| 896 | /* fixup params based on TDM slot masks */ |
| 897 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 898 | codec_dai->tx_mask) |
| 899 | soc_pcm_codec_params_fixup(&codec_params, |
| 900 | codec_dai->tx_mask); |
| 901 | |
| 902 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE && |
| 903 | codec_dai->rx_mask) |
| 904 | soc_pcm_codec_params_fixup(&codec_params, |
| 905 | codec_dai->rx_mask); |
| 906 | |
| 907 | ret = snd_soc_dai_hw_params(codec_dai, substream, |
| 908 | &codec_params); |
| 909 | if(ret < 0) |
| 910 | goto codec_err; |
| 911 | |
| 912 | codec_dai->rate = params_rate(&codec_params); |
| 913 | codec_dai->channels = params_channels(&codec_params); |
| 914 | codec_dai->sample_bits = snd_pcm_format_physical_width( |
| 915 | params_format(&codec_params)); |
| 916 | |
| 917 | snd_soc_dapm_update_dai(substream, &codec_params, codec_dai); |
| 918 | } |
| 919 | |
| 920 | ret = snd_soc_dai_hw_params(cpu_dai, substream, params); |
| 921 | if (ret < 0) |
| 922 | goto interface_err; |
| 923 | |
| 924 | /* store the parameters for each DAIs */ |
| 925 | cpu_dai->rate = params_rate(params); |
| 926 | cpu_dai->channels = params_channels(params); |
| 927 | cpu_dai->sample_bits = |
| 928 | snd_pcm_format_physical_width(params_format(params)); |
| 929 | |
| 930 | snd_soc_dapm_update_dai(substream, params, cpu_dai); |
| 931 | |
| 932 | for_each_rtd_components(rtd, rtdcom, component) { |
| 933 | ret = snd_soc_component_hw_params(component, substream, params); |
| 934 | if (ret < 0) { |
| 935 | dev_err(component->dev, |
| 936 | "ASoC: %s hw params failed: %d\n", |
| 937 | component->name, ret); |
| 938 | goto component_err; |
| 939 | } |
| 940 | } |
| 941 | component = NULL; |
| 942 | |
| 943 | ret = soc_pcm_params_symmetry(substream, params); |
| 944 | if (ret) |
| 945 | goto component_err; |
| 946 | out: |
| 947 | mutex_unlock(&rtd->card->pcm_mutex); |
| 948 | return ret; |
| 949 | |
| 950 | component_err: |
| 951 | soc_pcm_components_hw_free(substream, component); |
| 952 | |
| 953 | snd_soc_dai_hw_free(cpu_dai, substream); |
| 954 | cpu_dai->rate = 0; |
| 955 | |
| 956 | interface_err: |
| 957 | i = rtd->num_codecs; |
| 958 | |
| 959 | codec_err: |
| 960 | for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) { |
| 961 | if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) |
| 962 | continue; |
| 963 | |
| 964 | snd_soc_dai_hw_free(codec_dai, substream); |
| 965 | codec_dai->rate = 0; |
| 966 | } |
| 967 | |
| 968 | if (rtd->dai_link->ops->hw_free) |
| 969 | rtd->dai_link->ops->hw_free(substream); |
| 970 | |
| 971 | mutex_unlock(&rtd->card->pcm_mutex); |
| 972 | return ret; |
| 973 | } |
| 974 | |
| 975 | /* |
| 976 | * Frees resources allocated by hw_params, can be called multiple times |
| 977 | */ |
| 978 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) |
| 979 | { |
| 980 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 981 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 982 | struct snd_soc_dai *codec_dai; |
| 983 | bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; |
| 984 | int i; |
| 985 | |
| 986 | mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); |
| 987 | |
| 988 | /* clear the corresponding DAIs parameters when going to be inactive */ |
| 989 | if (cpu_dai->active == 1) { |
| 990 | cpu_dai->rate = 0; |
| 991 | cpu_dai->channels = 0; |
| 992 | cpu_dai->sample_bits = 0; |
| 993 | } |
| 994 | |
| 995 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 996 | if (codec_dai->active == 1) { |
| 997 | codec_dai->rate = 0; |
| 998 | codec_dai->channels = 0; |
| 999 | codec_dai->sample_bits = 0; |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | /* apply codec digital mute */ |
| 1004 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1005 | if ((playback && codec_dai->playback_active == 1) || |
| 1006 | (!playback && codec_dai->capture_active == 1)) |
| 1007 | snd_soc_dai_digital_mute(codec_dai, 1, |
| 1008 | substream->stream); |
| 1009 | } |
| 1010 | |
| 1011 | /* free any machine hw params */ |
| 1012 | if (rtd->dai_link->ops->hw_free) |
| 1013 | rtd->dai_link->ops->hw_free(substream); |
| 1014 | |
| 1015 | /* free any component resources */ |
| 1016 | soc_pcm_components_hw_free(substream, NULL); |
| 1017 | |
| 1018 | /* now free hw params for the DAIs */ |
| 1019 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1020 | if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) |
| 1021 | continue; |
| 1022 | |
| 1023 | snd_soc_dai_hw_free(codec_dai, substream); |
| 1024 | } |
| 1025 | |
| 1026 | snd_soc_dai_hw_free(cpu_dai, substream); |
| 1027 | |
| 1028 | mutex_unlock(&rtd->card->pcm_mutex); |
| 1029 | return 0; |
| 1030 | } |
| 1031 | |
| 1032 | static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd) |
| 1033 | { |
| 1034 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 1035 | struct snd_soc_component *component; |
| 1036 | struct snd_soc_rtdcom_list *rtdcom; |
| 1037 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1038 | struct snd_soc_dai *codec_dai; |
| 1039 | int i, ret; |
| 1040 | |
| 1041 | if (rtd->dai_link->ops->trigger) { |
| 1042 | ret = rtd->dai_link->ops->trigger(substream, cmd); |
| 1043 | if (ret < 0) |
| 1044 | return ret; |
| 1045 | } |
| 1046 | |
| 1047 | for_each_rtd_components(rtd, rtdcom, component) { |
| 1048 | ret = snd_soc_component_trigger(component, substream, cmd); |
| 1049 | if (ret < 0) |
| 1050 | return ret; |
| 1051 | } |
| 1052 | |
| 1053 | ret = snd_soc_dai_trigger(cpu_dai, substream, cmd); |
| 1054 | if (ret < 0) |
| 1055 | return ret; |
| 1056 | |
| 1057 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1058 | ret = snd_soc_dai_trigger(codec_dai, substream, cmd); |
| 1059 | if (ret < 0) |
| 1060 | return ret; |
| 1061 | } |
| 1062 | |
| 1063 | return 0; |
| 1064 | } |
| 1065 | |
| 1066 | static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd) |
| 1067 | { |
| 1068 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 1069 | struct snd_soc_component *component; |
| 1070 | struct snd_soc_rtdcom_list *rtdcom; |
| 1071 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1072 | struct snd_soc_dai *codec_dai; |
| 1073 | int i, ret; |
| 1074 | |
| 1075 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1076 | ret = snd_soc_dai_trigger(codec_dai, substream, cmd); |
| 1077 | if (ret < 0) |
| 1078 | return ret; |
| 1079 | } |
| 1080 | |
| 1081 | ret = snd_soc_dai_trigger(cpu_dai, substream, cmd); |
| 1082 | if (ret < 0) |
| 1083 | return ret; |
| 1084 | |
| 1085 | for_each_rtd_components(rtd, rtdcom, component) { |
| 1086 | ret = snd_soc_component_trigger(component, substream, cmd); |
| 1087 | if (ret < 0) |
| 1088 | return ret; |
| 1089 | } |
| 1090 | |
| 1091 | if (rtd->dai_link->ops->trigger) { |
| 1092 | ret = rtd->dai_link->ops->trigger(substream, cmd); |
| 1093 | if (ret < 0) |
| 1094 | return ret; |
| 1095 | } |
| 1096 | |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
| 1100 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| 1101 | { |
| 1102 | int ret; |
| 1103 | |
| 1104 | switch (cmd) { |
| 1105 | case SNDRV_PCM_TRIGGER_START: |
| 1106 | case SNDRV_PCM_TRIGGER_RESUME: |
| 1107 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 1108 | ret = soc_pcm_trigger_start(substream, cmd); |
| 1109 | break; |
| 1110 | case SNDRV_PCM_TRIGGER_STOP: |
| 1111 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 1112 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 1113 | ret = soc_pcm_trigger_stop(substream, cmd); |
| 1114 | break; |
| 1115 | default: |
| 1116 | return -EINVAL; |
| 1117 | } |
| 1118 | |
| 1119 | return ret; |
| 1120 | } |
| 1121 | |
| 1122 | static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, |
| 1123 | int cmd) |
| 1124 | { |
| 1125 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 1126 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1127 | struct snd_soc_dai *codec_dai; |
| 1128 | int i, ret; |
| 1129 | |
| 1130 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1131 | ret = snd_soc_dai_bespoke_trigger(codec_dai, substream, cmd); |
| 1132 | if (ret < 0) |
| 1133 | return ret; |
| 1134 | } |
| 1135 | |
| 1136 | ret = snd_soc_dai_bespoke_trigger(cpu_dai, substream, cmd); |
| 1137 | if (ret < 0) |
| 1138 | return ret; |
| 1139 | |
| 1140 | return 0; |
| 1141 | } |
| 1142 | /* |
| 1143 | * soc level wrapper for pointer callback |
| 1144 | * If cpu_dai, codec_dai, component driver has the delay callback, then |
| 1145 | * the runtime->delay will be updated accordingly. |
| 1146 | */ |
| 1147 | static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) |
| 1148 | { |
| 1149 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 1150 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1151 | struct snd_soc_dai *codec_dai; |
| 1152 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 1153 | snd_pcm_uframes_t offset = 0; |
| 1154 | snd_pcm_sframes_t delay = 0; |
| 1155 | snd_pcm_sframes_t codec_delay = 0; |
| 1156 | int i; |
| 1157 | |
| 1158 | /* clearing the previous total delay */ |
| 1159 | runtime->delay = 0; |
| 1160 | |
| 1161 | offset = snd_soc_pcm_component_pointer(substream); |
| 1162 | |
| 1163 | /* base delay if assigned in pointer callback */ |
| 1164 | delay = runtime->delay; |
| 1165 | |
| 1166 | delay += snd_soc_dai_delay(cpu_dai, substream); |
| 1167 | |
| 1168 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1169 | codec_delay = max(codec_delay, |
| 1170 | snd_soc_dai_delay(codec_dai, substream)); |
| 1171 | } |
| 1172 | delay += codec_delay; |
| 1173 | |
| 1174 | runtime->delay = delay; |
| 1175 | |
| 1176 | return offset; |
| 1177 | } |
| 1178 | |
| 1179 | /* connect a FE and BE */ |
| 1180 | static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, |
| 1181 | struct snd_soc_pcm_runtime *be, int stream) |
| 1182 | { |
| 1183 | struct snd_soc_dpcm *dpcm; |
| 1184 | unsigned long flags; |
| 1185 | char *name; |
| 1186 | |
| 1187 | /* only add new dpcms */ |
| 1188 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1189 | if (dpcm->be == be && dpcm->fe == fe) |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
| 1193 | dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); |
| 1194 | if (!dpcm) |
| 1195 | return -ENOMEM; |
| 1196 | |
| 1197 | dpcm->be = be; |
| 1198 | dpcm->fe = fe; |
| 1199 | be->dpcm[stream].runtime = fe->dpcm[stream].runtime; |
| 1200 | dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; |
| 1201 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 1202 | list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); |
| 1203 | list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); |
| 1204 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 1205 | |
| 1206 | dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", |
| 1207 | stream ? "capture" : "playback", fe->dai_link->name, |
| 1208 | stream ? "<-" : "->", be->dai_link->name); |
| 1209 | |
| 1210 | #ifdef CONFIG_DEBUG_FS |
| 1211 | name = kasprintf(GFP_KERNEL, "%s:%s", be->dai_link->name, |
| 1212 | stream ? "capture" : "playback"); |
| 1213 | if (name) { |
| 1214 | dpcm->debugfs_state = debugfs_create_dir(name, |
| 1215 | fe->debugfs_dpcm_root); |
| 1216 | debugfs_create_u32("state", 0644, dpcm->debugfs_state, |
| 1217 | &dpcm->state); |
| 1218 | kfree(name); |
| 1219 | } |
| 1220 | #endif |
| 1221 | return 1; |
| 1222 | } |
| 1223 | |
| 1224 | /* reparent a BE onto another FE */ |
| 1225 | static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, |
| 1226 | struct snd_soc_pcm_runtime *be, int stream) |
| 1227 | { |
| 1228 | struct snd_soc_dpcm *dpcm; |
| 1229 | struct snd_pcm_substream *fe_substream, *be_substream; |
| 1230 | |
| 1231 | /* reparent if BE is connected to other FEs */ |
| 1232 | if (!be->dpcm[stream].users) |
| 1233 | return; |
| 1234 | |
| 1235 | be_substream = snd_soc_dpcm_get_substream(be, stream); |
| 1236 | |
| 1237 | for_each_dpcm_fe(be, stream, dpcm) { |
| 1238 | if (dpcm->fe == fe) |
| 1239 | continue; |
| 1240 | |
| 1241 | dev_dbg(fe->dev, "reparent %s path %s %s %s\n", |
| 1242 | stream ? "capture" : "playback", |
| 1243 | dpcm->fe->dai_link->name, |
| 1244 | stream ? "<-" : "->", dpcm->be->dai_link->name); |
| 1245 | |
| 1246 | fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); |
| 1247 | be_substream->runtime = fe_substream->runtime; |
| 1248 | break; |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | /* disconnect a BE and FE */ |
| 1253 | void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) |
| 1254 | { |
| 1255 | struct snd_soc_dpcm *dpcm, *d; |
| 1256 | unsigned long flags; |
| 1257 | |
| 1258 | for_each_dpcm_be_safe(fe, stream, dpcm, d) { |
| 1259 | dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", |
| 1260 | stream ? "capture" : "playback", |
| 1261 | dpcm->be->dai_link->name); |
| 1262 | |
| 1263 | if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) |
| 1264 | continue; |
| 1265 | |
| 1266 | dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", |
| 1267 | stream ? "capture" : "playback", fe->dai_link->name, |
| 1268 | stream ? "<-" : "->", dpcm->be->dai_link->name); |
| 1269 | |
| 1270 | /* BEs still alive need new FE */ |
| 1271 | dpcm_be_reparent(fe, dpcm->be, stream); |
| 1272 | |
| 1273 | #ifdef CONFIG_DEBUG_FS |
| 1274 | debugfs_remove_recursive(dpcm->debugfs_state); |
| 1275 | #endif |
| 1276 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 1277 | list_del(&dpcm->list_be); |
| 1278 | list_del(&dpcm->list_fe); |
| 1279 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 1280 | kfree(dpcm); |
| 1281 | } |
| 1282 | } |
| 1283 | |
| 1284 | /* get BE for DAI widget and stream */ |
| 1285 | static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, |
| 1286 | struct snd_soc_dapm_widget *widget, int stream) |
| 1287 | { |
| 1288 | struct snd_soc_pcm_runtime *be; |
| 1289 | struct snd_soc_dai *dai; |
| 1290 | int i; |
| 1291 | |
| 1292 | dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name); |
| 1293 | |
| 1294 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1295 | for_each_card_rtds(card, be) { |
| 1296 | |
| 1297 | if (!be->dai_link->no_pcm) |
| 1298 | continue; |
| 1299 | |
| 1300 | dev_dbg(card->dev, "ASoC: try BE : %s\n", |
| 1301 | be->cpu_dai->playback_widget ? |
| 1302 | be->cpu_dai->playback_widget->name : "(not set)"); |
| 1303 | |
| 1304 | if (be->cpu_dai->playback_widget == widget) |
| 1305 | return be; |
| 1306 | |
| 1307 | for_each_rtd_codec_dai(be, i, dai) { |
| 1308 | if (dai->playback_widget == widget) |
| 1309 | return be; |
| 1310 | } |
| 1311 | } |
| 1312 | } else { |
| 1313 | |
| 1314 | for_each_card_rtds(card, be) { |
| 1315 | |
| 1316 | if (!be->dai_link->no_pcm) |
| 1317 | continue; |
| 1318 | |
| 1319 | dev_dbg(card->dev, "ASoC: try BE %s\n", |
| 1320 | be->cpu_dai->capture_widget ? |
| 1321 | be->cpu_dai->capture_widget->name : "(not set)"); |
| 1322 | |
| 1323 | if (be->cpu_dai->capture_widget == widget) |
| 1324 | return be; |
| 1325 | |
| 1326 | for_each_rtd_codec_dai(be, i, dai) { |
| 1327 | if (dai->capture_widget == widget) |
| 1328 | return be; |
| 1329 | } |
| 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | /* dai link name and stream name set correctly ? */ |
| 1334 | dev_err(card->dev, "ASoC: can't get %s BE for %s\n", |
| 1335 | stream ? "capture" : "playback", widget->name); |
| 1336 | return NULL; |
| 1337 | } |
| 1338 | |
| 1339 | static inline struct snd_soc_dapm_widget * |
| 1340 | dai_get_widget(struct snd_soc_dai *dai, int stream) |
| 1341 | { |
| 1342 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1343 | return dai->playback_widget; |
| 1344 | else |
| 1345 | return dai->capture_widget; |
| 1346 | } |
| 1347 | |
| 1348 | static int widget_in_list(struct snd_soc_dapm_widget_list *list, |
| 1349 | struct snd_soc_dapm_widget *widget) |
| 1350 | { |
| 1351 | int i; |
| 1352 | |
| 1353 | for (i = 0; i < list->num_widgets; i++) { |
| 1354 | if (widget == list->widgets[i]) |
| 1355 | return 1; |
| 1356 | } |
| 1357 | |
| 1358 | return 0; |
| 1359 | } |
| 1360 | |
| 1361 | static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, |
| 1362 | enum snd_soc_dapm_direction dir) |
| 1363 | { |
| 1364 | struct snd_soc_card *card = widget->dapm->card; |
| 1365 | struct snd_soc_pcm_runtime *rtd; |
| 1366 | struct snd_soc_dai *dai; |
| 1367 | int i; |
| 1368 | |
| 1369 | if (dir == SND_SOC_DAPM_DIR_OUT) { |
| 1370 | for_each_card_rtds(card, rtd) { |
| 1371 | if (!rtd->dai_link->no_pcm) |
| 1372 | continue; |
| 1373 | |
| 1374 | if (rtd->cpu_dai->playback_widget == widget) |
| 1375 | return true; |
| 1376 | |
| 1377 | for_each_rtd_codec_dai(rtd, i, dai) { |
| 1378 | if (dai->playback_widget == widget) |
| 1379 | return true; |
| 1380 | } |
| 1381 | } |
| 1382 | } else { /* SND_SOC_DAPM_DIR_IN */ |
| 1383 | for_each_card_rtds(card, rtd) { |
| 1384 | if (!rtd->dai_link->no_pcm) |
| 1385 | continue; |
| 1386 | |
| 1387 | if (rtd->cpu_dai->capture_widget == widget) |
| 1388 | return true; |
| 1389 | |
| 1390 | for_each_rtd_codec_dai(rtd, i, dai) { |
| 1391 | if (dai->capture_widget == widget) |
| 1392 | return true; |
| 1393 | } |
| 1394 | } |
| 1395 | } |
| 1396 | |
| 1397 | return false; |
| 1398 | } |
| 1399 | |
| 1400 | int dpcm_path_get(struct snd_soc_pcm_runtime *fe, |
| 1401 | int stream, struct snd_soc_dapm_widget_list **list) |
| 1402 | { |
| 1403 | struct snd_soc_dai *cpu_dai = fe->cpu_dai; |
| 1404 | int paths; |
| 1405 | |
| 1406 | /* get number of valid DAI paths and their widgets */ |
| 1407 | paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, |
| 1408 | dpcm_end_walk_at_be); |
| 1409 | |
| 1410 | dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, |
| 1411 | stream ? "capture" : "playback"); |
| 1412 | |
| 1413 | return paths; |
| 1414 | } |
| 1415 | |
| 1416 | static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, |
| 1417 | struct snd_soc_dapm_widget_list **list_) |
| 1418 | { |
| 1419 | struct snd_soc_dpcm *dpcm; |
| 1420 | struct snd_soc_dapm_widget_list *list = *list_; |
| 1421 | struct snd_soc_dapm_widget *widget; |
| 1422 | struct snd_soc_dai *dai; |
| 1423 | int prune = 0; |
| 1424 | int do_prune; |
| 1425 | |
| 1426 | /* Destroy any old FE <--> BE connections */ |
| 1427 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1428 | unsigned int i; |
| 1429 | |
| 1430 | /* is there a valid CPU DAI widget for this BE */ |
| 1431 | widget = dai_get_widget(dpcm->be->cpu_dai, stream); |
| 1432 | |
| 1433 | /* prune the BE if it's no longer in our active list */ |
| 1434 | if (widget && widget_in_list(list, widget)) |
| 1435 | continue; |
| 1436 | |
| 1437 | /* is there a valid CODEC DAI widget for this BE */ |
| 1438 | do_prune = 1; |
| 1439 | for_each_rtd_codec_dai(dpcm->be, i, dai) { |
| 1440 | widget = dai_get_widget(dai, stream); |
| 1441 | |
| 1442 | /* prune the BE if it's no longer in our active list */ |
| 1443 | if (widget && widget_in_list(list, widget)) |
| 1444 | do_prune = 0; |
| 1445 | } |
| 1446 | if (!do_prune) |
| 1447 | continue; |
| 1448 | |
| 1449 | dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", |
| 1450 | stream ? "capture" : "playback", |
| 1451 | dpcm->be->dai_link->name, fe->dai_link->name); |
| 1452 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; |
| 1453 | dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; |
| 1454 | prune++; |
| 1455 | } |
| 1456 | |
| 1457 | dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); |
| 1458 | return prune; |
| 1459 | } |
| 1460 | |
| 1461 | static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, |
| 1462 | struct snd_soc_dapm_widget_list **list_) |
| 1463 | { |
| 1464 | struct snd_soc_card *card = fe->card; |
| 1465 | struct snd_soc_dapm_widget_list *list = *list_; |
| 1466 | struct snd_soc_pcm_runtime *be; |
| 1467 | int i, new = 0, err; |
| 1468 | |
| 1469 | /* Create any new FE <--> BE connections */ |
| 1470 | for (i = 0; i < list->num_widgets; i++) { |
| 1471 | |
| 1472 | switch (list->widgets[i]->id) { |
| 1473 | case snd_soc_dapm_dai_in: |
| 1474 | if (stream != SNDRV_PCM_STREAM_PLAYBACK) |
| 1475 | continue; |
| 1476 | break; |
| 1477 | case snd_soc_dapm_dai_out: |
| 1478 | if (stream != SNDRV_PCM_STREAM_CAPTURE) |
| 1479 | continue; |
| 1480 | break; |
| 1481 | default: |
| 1482 | continue; |
| 1483 | } |
| 1484 | |
| 1485 | /* is there a valid BE rtd for this widget */ |
| 1486 | be = dpcm_get_be(card, list->widgets[i], stream); |
| 1487 | if (!be) { |
| 1488 | dev_err(fe->dev, "ASoC: no BE found for %s\n", |
| 1489 | list->widgets[i]->name); |
| 1490 | continue; |
| 1491 | } |
| 1492 | |
| 1493 | /* make sure BE is a real BE */ |
| 1494 | if (!be->dai_link->no_pcm) |
| 1495 | continue; |
| 1496 | |
| 1497 | /* don't connect if FE is not running */ |
| 1498 | if (!fe->dpcm[stream].runtime && !fe->fe_compr) |
| 1499 | continue; |
| 1500 | |
| 1501 | /* newly connected FE and BE */ |
| 1502 | err = dpcm_be_connect(fe, be, stream); |
| 1503 | if (err < 0) { |
| 1504 | dev_err(fe->dev, "ASoC: can't connect %s\n", |
| 1505 | list->widgets[i]->name); |
| 1506 | break; |
| 1507 | } else if (err == 0) /* already connected */ |
| 1508 | continue; |
| 1509 | |
| 1510 | /* new */ |
| 1511 | be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; |
| 1512 | new++; |
| 1513 | } |
| 1514 | |
| 1515 | dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); |
| 1516 | return new; |
| 1517 | } |
| 1518 | |
| 1519 | /* |
| 1520 | * Find the corresponding BE DAIs that source or sink audio to this |
| 1521 | * FE substream. |
| 1522 | */ |
| 1523 | int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, |
| 1524 | int stream, struct snd_soc_dapm_widget_list **list, int new) |
| 1525 | { |
| 1526 | if (new) |
| 1527 | return dpcm_add_paths(fe, stream, list); |
| 1528 | else |
| 1529 | return dpcm_prune_paths(fe, stream, list); |
| 1530 | } |
| 1531 | |
| 1532 | void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) |
| 1533 | { |
| 1534 | struct snd_soc_dpcm *dpcm; |
| 1535 | unsigned long flags; |
| 1536 | |
| 1537 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 1538 | for_each_dpcm_be(fe, stream, dpcm) |
| 1539 | dpcm->be->dpcm[stream].runtime_update = |
| 1540 | SND_SOC_DPCM_UPDATE_NO; |
| 1541 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 1542 | } |
| 1543 | |
| 1544 | static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, |
| 1545 | int stream) |
| 1546 | { |
| 1547 | struct snd_soc_dpcm *dpcm; |
| 1548 | |
| 1549 | /* disable any enabled and non active backends */ |
| 1550 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1551 | |
| 1552 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1553 | struct snd_pcm_substream *be_substream = |
| 1554 | snd_soc_dpcm_get_substream(be, stream); |
| 1555 | |
| 1556 | if (be->dpcm[stream].users == 0) |
| 1557 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
| 1558 | stream ? "capture" : "playback", |
| 1559 | be->dpcm[stream].state); |
| 1560 | |
| 1561 | if (--be->dpcm[stream].users != 0) |
| 1562 | continue; |
| 1563 | |
| 1564 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) |
| 1565 | continue; |
| 1566 | |
| 1567 | soc_pcm_close(be_substream); |
| 1568 | be_substream->runtime = NULL; |
| 1569 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| 1570 | } |
| 1571 | } |
| 1572 | |
| 1573 | int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) |
| 1574 | { |
| 1575 | struct snd_soc_dpcm *dpcm; |
| 1576 | int err, count = 0; |
| 1577 | |
| 1578 | /* only startup BE DAIs that are either sinks or sources to this FE DAI */ |
| 1579 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1580 | |
| 1581 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1582 | struct snd_pcm_substream *be_substream = |
| 1583 | snd_soc_dpcm_get_substream(be, stream); |
| 1584 | |
| 1585 | if (!be_substream) { |
| 1586 | dev_err(be->dev, "ASoC: no backend %s stream\n", |
| 1587 | stream ? "capture" : "playback"); |
| 1588 | continue; |
| 1589 | } |
| 1590 | |
| 1591 | /* is this op for this BE ? */ |
| 1592 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 1593 | continue; |
| 1594 | |
| 1595 | /* first time the dpcm is open ? */ |
| 1596 | if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) |
| 1597 | dev_err(be->dev, "ASoC: too many users %s at open %d\n", |
| 1598 | stream ? "capture" : "playback", |
| 1599 | be->dpcm[stream].state); |
| 1600 | |
| 1601 | if (be->dpcm[stream].users++ != 0) |
| 1602 | continue; |
| 1603 | |
| 1604 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && |
| 1605 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) |
| 1606 | continue; |
| 1607 | |
| 1608 | dev_dbg(be->dev, "ASoC: open %s BE %s\n", |
| 1609 | stream ? "capture" : "playback", be->dai_link->name); |
| 1610 | |
| 1611 | be_substream->runtime = be->dpcm[stream].runtime; |
| 1612 | err = soc_pcm_open(be_substream); |
| 1613 | if (err < 0) { |
| 1614 | dev_err(be->dev, "ASoC: BE open failed %d\n", err); |
| 1615 | be->dpcm[stream].users--; |
| 1616 | if (be->dpcm[stream].users < 0) |
| 1617 | dev_err(be->dev, "ASoC: no users %s at unwind %d\n", |
| 1618 | stream ? "capture" : "playback", |
| 1619 | be->dpcm[stream].state); |
| 1620 | |
| 1621 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| 1622 | goto unwind; |
| 1623 | } |
| 1624 | |
| 1625 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; |
| 1626 | count++; |
| 1627 | } |
| 1628 | |
| 1629 | return count; |
| 1630 | |
| 1631 | unwind: |
| 1632 | /* disable any enabled and non active backends */ |
| 1633 | for_each_dpcm_be_rollback(fe, stream, dpcm) { |
| 1634 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1635 | struct snd_pcm_substream *be_substream = |
| 1636 | snd_soc_dpcm_get_substream(be, stream); |
| 1637 | |
| 1638 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 1639 | continue; |
| 1640 | |
| 1641 | if (be->dpcm[stream].users == 0) |
| 1642 | dev_err(be->dev, "ASoC: no users %s at close %d\n", |
| 1643 | stream ? "capture" : "playback", |
| 1644 | be->dpcm[stream].state); |
| 1645 | |
| 1646 | if (--be->dpcm[stream].users != 0) |
| 1647 | continue; |
| 1648 | |
| 1649 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) |
| 1650 | continue; |
| 1651 | |
| 1652 | soc_pcm_close(be_substream); |
| 1653 | be_substream->runtime = NULL; |
| 1654 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| 1655 | } |
| 1656 | |
| 1657 | return err; |
| 1658 | } |
| 1659 | |
| 1660 | static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime, |
| 1661 | struct snd_soc_pcm_stream *stream) |
| 1662 | { |
| 1663 | runtime->hw.rate_min = stream->rate_min; |
| 1664 | runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX); |
| 1665 | runtime->hw.channels_min = stream->channels_min; |
| 1666 | runtime->hw.channels_max = stream->channels_max; |
| 1667 | if (runtime->hw.formats) |
| 1668 | runtime->hw.formats &= stream->formats; |
| 1669 | else |
| 1670 | runtime->hw.formats = stream->formats; |
| 1671 | runtime->hw.rates = stream->rates; |
| 1672 | } |
| 1673 | |
| 1674 | static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream, |
| 1675 | u64 *formats) |
| 1676 | { |
| 1677 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 1678 | struct snd_soc_dpcm *dpcm; |
| 1679 | struct snd_soc_dai *dai; |
| 1680 | int stream = substream->stream; |
| 1681 | |
| 1682 | if (!fe->dai_link->dpcm_merged_format) |
| 1683 | return; |
| 1684 | |
| 1685 | /* |
| 1686 | * It returns merged BE codec format |
| 1687 | * if FE want to use it (= dpcm_merged_format) |
| 1688 | */ |
| 1689 | |
| 1690 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1691 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1692 | struct snd_soc_dai_driver *codec_dai_drv; |
| 1693 | struct snd_soc_pcm_stream *codec_stream; |
| 1694 | int i; |
| 1695 | |
| 1696 | for_each_rtd_codec_dai(be, i, dai) { |
| 1697 | /* |
| 1698 | * Skip CODECs which don't support the current stream |
| 1699 | * type. See soc_pcm_init_runtime_hw() for more details |
| 1700 | */ |
| 1701 | if (!snd_soc_dai_stream_valid(dai, stream)) |
| 1702 | continue; |
| 1703 | |
| 1704 | codec_dai_drv = dai->driver; |
| 1705 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1706 | codec_stream = &codec_dai_drv->playback; |
| 1707 | else |
| 1708 | codec_stream = &codec_dai_drv->capture; |
| 1709 | |
| 1710 | *formats &= codec_stream->formats; |
| 1711 | } |
| 1712 | } |
| 1713 | } |
| 1714 | |
| 1715 | static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, |
| 1716 | unsigned int *channels_min, |
| 1717 | unsigned int *channels_max) |
| 1718 | { |
| 1719 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 1720 | struct snd_soc_dpcm *dpcm; |
| 1721 | int stream = substream->stream; |
| 1722 | |
| 1723 | if (!fe->dai_link->dpcm_merged_chan) |
| 1724 | return; |
| 1725 | |
| 1726 | /* |
| 1727 | * It returns merged BE codec channel; |
| 1728 | * if FE want to use it (= dpcm_merged_chan) |
| 1729 | */ |
| 1730 | |
| 1731 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1732 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1733 | struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver; |
| 1734 | struct snd_soc_dai_driver *codec_dai_drv; |
| 1735 | struct snd_soc_pcm_stream *codec_stream; |
| 1736 | struct snd_soc_pcm_stream *cpu_stream; |
| 1737 | |
| 1738 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1739 | cpu_stream = &cpu_dai_drv->playback; |
| 1740 | else |
| 1741 | cpu_stream = &cpu_dai_drv->capture; |
| 1742 | |
| 1743 | *channels_min = max(*channels_min, cpu_stream->channels_min); |
| 1744 | *channels_max = min(*channels_max, cpu_stream->channels_max); |
| 1745 | |
| 1746 | /* |
| 1747 | * chan min/max cannot be enforced if there are multiple CODEC |
| 1748 | * DAIs connected to a single CPU DAI, use CPU DAI's directly |
| 1749 | */ |
| 1750 | if (be->num_codecs == 1) { |
| 1751 | codec_dai_drv = be->codec_dais[0]->driver; |
| 1752 | |
| 1753 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1754 | codec_stream = &codec_dai_drv->playback; |
| 1755 | else |
| 1756 | codec_stream = &codec_dai_drv->capture; |
| 1757 | |
| 1758 | *channels_min = max(*channels_min, |
| 1759 | codec_stream->channels_min); |
| 1760 | *channels_max = min(*channels_max, |
| 1761 | codec_stream->channels_max); |
| 1762 | } |
| 1763 | } |
| 1764 | } |
| 1765 | |
| 1766 | static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream, |
| 1767 | unsigned int *rates, |
| 1768 | unsigned int *rate_min, |
| 1769 | unsigned int *rate_max) |
| 1770 | { |
| 1771 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 1772 | struct snd_soc_dpcm *dpcm; |
| 1773 | int stream = substream->stream; |
| 1774 | |
| 1775 | if (!fe->dai_link->dpcm_merged_rate) |
| 1776 | return; |
| 1777 | |
| 1778 | /* |
| 1779 | * It returns merged BE codec channel; |
| 1780 | * if FE want to use it (= dpcm_merged_chan) |
| 1781 | */ |
| 1782 | |
| 1783 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1784 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1785 | struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver; |
| 1786 | struct snd_soc_dai_driver *codec_dai_drv; |
| 1787 | struct snd_soc_pcm_stream *codec_stream; |
| 1788 | struct snd_soc_pcm_stream *cpu_stream; |
| 1789 | struct snd_soc_dai *dai; |
| 1790 | int i; |
| 1791 | |
| 1792 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1793 | cpu_stream = &cpu_dai_drv->playback; |
| 1794 | else |
| 1795 | cpu_stream = &cpu_dai_drv->capture; |
| 1796 | |
| 1797 | *rate_min = max(*rate_min, cpu_stream->rate_min); |
| 1798 | *rate_max = min_not_zero(*rate_max, cpu_stream->rate_max); |
| 1799 | *rates = snd_pcm_rate_mask_intersect(*rates, cpu_stream->rates); |
| 1800 | |
| 1801 | for_each_rtd_codec_dai(be, i, dai) { |
| 1802 | /* |
| 1803 | * Skip CODECs which don't support the current stream |
| 1804 | * type. See soc_pcm_init_runtime_hw() for more details |
| 1805 | */ |
| 1806 | if (!snd_soc_dai_stream_valid(dai, stream)) |
| 1807 | continue; |
| 1808 | |
| 1809 | codec_dai_drv = dai->driver; |
| 1810 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1811 | codec_stream = &codec_dai_drv->playback; |
| 1812 | else |
| 1813 | codec_stream = &codec_dai_drv->capture; |
| 1814 | |
| 1815 | *rate_min = max(*rate_min, codec_stream->rate_min); |
| 1816 | *rate_max = min_not_zero(*rate_max, |
| 1817 | codec_stream->rate_max); |
| 1818 | *rates = snd_pcm_rate_mask_intersect(*rates, |
| 1819 | codec_stream->rates); |
| 1820 | } |
| 1821 | } |
| 1822 | } |
| 1823 | |
| 1824 | static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) |
| 1825 | { |
| 1826 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 1827 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 1828 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1829 | struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; |
| 1830 | |
| 1831 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1832 | dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback); |
| 1833 | else |
| 1834 | dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture); |
| 1835 | |
| 1836 | dpcm_runtime_merge_format(substream, &runtime->hw.formats); |
| 1837 | dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min, |
| 1838 | &runtime->hw.channels_max); |
| 1839 | dpcm_runtime_merge_rate(substream, &runtime->hw.rates, |
| 1840 | &runtime->hw.rate_min, &runtime->hw.rate_max); |
| 1841 | } |
| 1842 | |
| 1843 | static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); |
| 1844 | |
| 1845 | /* Set FE's runtime_update state; the state is protected via PCM stream lock |
| 1846 | * for avoiding the race with trigger callback. |
| 1847 | * If the state is unset and a trigger is pending while the previous operation, |
| 1848 | * process the pending trigger action here. |
| 1849 | */ |
| 1850 | static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe, |
| 1851 | int stream, enum snd_soc_dpcm_update state) |
| 1852 | { |
| 1853 | struct snd_pcm_substream *substream = |
| 1854 | snd_soc_dpcm_get_substream(fe, stream); |
| 1855 | |
| 1856 | snd_pcm_stream_lock_irq(substream); |
| 1857 | if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) { |
| 1858 | dpcm_fe_dai_do_trigger(substream, |
| 1859 | fe->dpcm[stream].trigger_pending - 1); |
| 1860 | fe->dpcm[stream].trigger_pending = 0; |
| 1861 | } |
| 1862 | fe->dpcm[stream].runtime_update = state; |
| 1863 | snd_pcm_stream_unlock_irq(substream); |
| 1864 | } |
| 1865 | |
| 1866 | static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, |
| 1867 | int stream) |
| 1868 | { |
| 1869 | struct snd_soc_dpcm *dpcm; |
| 1870 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| 1871 | struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai; |
| 1872 | int err; |
| 1873 | |
| 1874 | /* apply symmetry for FE */ |
| 1875 | if (soc_pcm_has_symmetry(fe_substream)) |
| 1876 | fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
| 1877 | |
| 1878 | /* Symmetry only applies if we've got an active stream. */ |
| 1879 | if (fe_cpu_dai->active) { |
| 1880 | err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); |
| 1881 | if (err < 0) |
| 1882 | return err; |
| 1883 | } |
| 1884 | |
| 1885 | /* apply symmetry for BE */ |
| 1886 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1887 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1888 | struct snd_pcm_substream *be_substream = |
| 1889 | snd_soc_dpcm_get_substream(be, stream); |
| 1890 | struct snd_soc_pcm_runtime *rtd; |
| 1891 | struct snd_soc_dai *codec_dai; |
| 1892 | int i; |
| 1893 | |
| 1894 | /* A backend may not have the requested substream */ |
| 1895 | if (!be_substream) |
| 1896 | continue; |
| 1897 | |
| 1898 | rtd = be_substream->private_data; |
| 1899 | if (rtd->dai_link->be_hw_params_fixup) |
| 1900 | continue; |
| 1901 | |
| 1902 | if (soc_pcm_has_symmetry(be_substream)) |
| 1903 | be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; |
| 1904 | |
| 1905 | /* Symmetry only applies if we've got an active stream. */ |
| 1906 | if (rtd->cpu_dai->active) { |
| 1907 | err = soc_pcm_apply_symmetry(fe_substream, |
| 1908 | rtd->cpu_dai); |
| 1909 | if (err < 0) |
| 1910 | return err; |
| 1911 | } |
| 1912 | |
| 1913 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 1914 | if (codec_dai->active) { |
| 1915 | err = soc_pcm_apply_symmetry(fe_substream, |
| 1916 | codec_dai); |
| 1917 | if (err < 0) |
| 1918 | return err; |
| 1919 | } |
| 1920 | } |
| 1921 | } |
| 1922 | |
| 1923 | return 0; |
| 1924 | } |
| 1925 | |
| 1926 | static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) |
| 1927 | { |
| 1928 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| 1929 | struct snd_pcm_runtime *runtime = fe_substream->runtime; |
| 1930 | int stream = fe_substream->stream, ret = 0; |
| 1931 | |
| 1932 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
| 1933 | |
| 1934 | ret = dpcm_be_dai_startup(fe, fe_substream->stream); |
| 1935 | if (ret < 0) { |
| 1936 | dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); |
| 1937 | goto be_err; |
| 1938 | } |
| 1939 | |
| 1940 | dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); |
| 1941 | |
| 1942 | /* start the DAI frontend */ |
| 1943 | ret = soc_pcm_open(fe_substream); |
| 1944 | if (ret < 0) { |
| 1945 | dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); |
| 1946 | goto unwind; |
| 1947 | } |
| 1948 | |
| 1949 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; |
| 1950 | |
| 1951 | dpcm_set_fe_runtime(fe_substream); |
| 1952 | snd_pcm_limit_hw_rates(runtime); |
| 1953 | |
| 1954 | ret = dpcm_apply_symmetry(fe_substream, stream); |
| 1955 | if (ret < 0) { |
| 1956 | dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n", |
| 1957 | ret); |
| 1958 | goto unwind; |
| 1959 | } |
| 1960 | |
| 1961 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 1962 | return 0; |
| 1963 | |
| 1964 | unwind: |
| 1965 | dpcm_be_dai_startup_unwind(fe, fe_substream->stream); |
| 1966 | be_err: |
| 1967 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 1968 | return ret; |
| 1969 | } |
| 1970 | |
| 1971 | int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
| 1972 | { |
| 1973 | struct snd_soc_dpcm *dpcm; |
| 1974 | |
| 1975 | /* only shutdown BEs that are either sinks or sources to this FE DAI */ |
| 1976 | for_each_dpcm_be(fe, stream, dpcm) { |
| 1977 | |
| 1978 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 1979 | struct snd_pcm_substream *be_substream = |
| 1980 | snd_soc_dpcm_get_substream(be, stream); |
| 1981 | |
| 1982 | /* is this op for this BE ? */ |
| 1983 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 1984 | continue; |
| 1985 | |
| 1986 | if (be->dpcm[stream].users == 0) |
| 1987 | dev_err(be->dev, "ASoC: no users %s at close - state %d\n", |
| 1988 | stream ? "capture" : "playback", |
| 1989 | be->dpcm[stream].state); |
| 1990 | |
| 1991 | if (--be->dpcm[stream].users != 0) |
| 1992 | continue; |
| 1993 | |
| 1994 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && |
| 1995 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) { |
| 1996 | soc_pcm_hw_free(be_substream); |
| 1997 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
| 1998 | } |
| 1999 | |
| 2000 | dev_dbg(be->dev, "ASoC: close BE %s\n", |
| 2001 | be->dai_link->name); |
| 2002 | |
| 2003 | soc_pcm_close(be_substream); |
| 2004 | be_substream->runtime = NULL; |
| 2005 | |
| 2006 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| 2007 | } |
| 2008 | return 0; |
| 2009 | } |
| 2010 | |
| 2011 | static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) |
| 2012 | { |
| 2013 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2014 | int stream = substream->stream; |
| 2015 | |
| 2016 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
| 2017 | |
| 2018 | /* shutdown the BEs */ |
| 2019 | dpcm_be_dai_shutdown(fe, substream->stream); |
| 2020 | |
| 2021 | dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); |
| 2022 | |
| 2023 | /* now shutdown the frontend */ |
| 2024 | soc_pcm_close(substream); |
| 2025 | |
| 2026 | /* run the stream event for each BE */ |
| 2027 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); |
| 2028 | |
| 2029 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| 2030 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 2031 | return 0; |
| 2032 | } |
| 2033 | |
| 2034 | int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) |
| 2035 | { |
| 2036 | struct snd_soc_dpcm *dpcm; |
| 2037 | |
| 2038 | /* only hw_params backends that are either sinks or sources |
| 2039 | * to this frontend DAI */ |
| 2040 | for_each_dpcm_be(fe, stream, dpcm) { |
| 2041 | |
| 2042 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2043 | struct snd_pcm_substream *be_substream = |
| 2044 | snd_soc_dpcm_get_substream(be, stream); |
| 2045 | |
| 2046 | /* is this op for this BE ? */ |
| 2047 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 2048 | continue; |
| 2049 | |
| 2050 | /* only free hw when no longer used - check all FEs */ |
| 2051 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| 2052 | continue; |
| 2053 | |
| 2054 | /* do not free hw if this BE is used by other FE */ |
| 2055 | if (be->dpcm[stream].users > 1) |
| 2056 | continue; |
| 2057 | |
| 2058 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
| 2059 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && |
| 2060 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && |
| 2061 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && |
| 2062 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && |
| 2063 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) |
| 2064 | continue; |
| 2065 | |
| 2066 | dev_dbg(be->dev, "ASoC: hw_free BE %s\n", |
| 2067 | be->dai_link->name); |
| 2068 | |
| 2069 | soc_pcm_hw_free(be_substream); |
| 2070 | |
| 2071 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
| 2072 | } |
| 2073 | |
| 2074 | return 0; |
| 2075 | } |
| 2076 | |
| 2077 | static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) |
| 2078 | { |
| 2079 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2080 | int err, stream = substream->stream; |
| 2081 | |
| 2082 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 2083 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
| 2084 | |
| 2085 | dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); |
| 2086 | |
| 2087 | /* call hw_free on the frontend */ |
| 2088 | err = soc_pcm_hw_free(substream); |
| 2089 | if (err < 0) |
| 2090 | dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", |
| 2091 | fe->dai_link->name); |
| 2092 | |
| 2093 | /* only hw_params backends that are either sinks or sources |
| 2094 | * to this frontend DAI */ |
| 2095 | err = dpcm_be_dai_hw_free(fe, stream); |
| 2096 | |
| 2097 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; |
| 2098 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 2099 | |
| 2100 | mutex_unlock(&fe->card->mutex); |
| 2101 | return 0; |
| 2102 | } |
| 2103 | |
| 2104 | int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) |
| 2105 | { |
| 2106 | struct snd_soc_dpcm *dpcm; |
| 2107 | int ret; |
| 2108 | |
| 2109 | for_each_dpcm_be(fe, stream, dpcm) { |
| 2110 | |
| 2111 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2112 | struct snd_pcm_substream *be_substream = |
| 2113 | snd_soc_dpcm_get_substream(be, stream); |
| 2114 | |
| 2115 | /* is this op for this BE ? */ |
| 2116 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 2117 | continue; |
| 2118 | |
| 2119 | /* copy params for each dpcm */ |
| 2120 | memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, |
| 2121 | sizeof(struct snd_pcm_hw_params)); |
| 2122 | |
| 2123 | /* perform any hw_params fixups */ |
| 2124 | if (be->dai_link->be_hw_params_fixup) { |
| 2125 | ret = be->dai_link->be_hw_params_fixup(be, |
| 2126 | &dpcm->hw_params); |
| 2127 | if (ret < 0) { |
| 2128 | dev_err(be->dev, |
| 2129 | "ASoC: hw_params BE fixup failed %d\n", |
| 2130 | ret); |
| 2131 | goto unwind; |
| 2132 | } |
| 2133 | } |
| 2134 | |
| 2135 | /* copy the fixed-up hw params for BE dai */ |
| 2136 | memcpy(&be->dpcm[stream].hw_params, &dpcm->hw_params, |
| 2137 | sizeof(struct snd_pcm_hw_params)); |
| 2138 | |
| 2139 | /* only allow hw_params() if no connected FEs are running */ |
| 2140 | if (!snd_soc_dpcm_can_be_params(fe, be, stream)) |
| 2141 | continue; |
| 2142 | |
| 2143 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && |
| 2144 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
| 2145 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) |
| 2146 | continue; |
| 2147 | |
| 2148 | dev_dbg(be->dev, "ASoC: hw_params BE %s\n", |
| 2149 | be->dai_link->name); |
| 2150 | |
| 2151 | ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); |
| 2152 | if (ret < 0) { |
| 2153 | dev_err(dpcm->be->dev, |
| 2154 | "ASoC: hw_params BE failed %d\n", ret); |
| 2155 | goto unwind; |
| 2156 | } |
| 2157 | |
| 2158 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; |
| 2159 | } |
| 2160 | return 0; |
| 2161 | |
| 2162 | unwind: |
| 2163 | /* disable any enabled and non active backends */ |
| 2164 | for_each_dpcm_be_rollback(fe, stream, dpcm) { |
| 2165 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2166 | struct snd_pcm_substream *be_substream = |
| 2167 | snd_soc_dpcm_get_substream(be, stream); |
| 2168 | |
| 2169 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 2170 | continue; |
| 2171 | |
| 2172 | /* only allow hw_free() if no connected FEs are running */ |
| 2173 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| 2174 | continue; |
| 2175 | |
| 2176 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && |
| 2177 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
| 2178 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && |
| 2179 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
| 2180 | continue; |
| 2181 | |
| 2182 | soc_pcm_hw_free(be_substream); |
| 2183 | } |
| 2184 | |
| 2185 | return ret; |
| 2186 | } |
| 2187 | |
| 2188 | static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, |
| 2189 | struct snd_pcm_hw_params *params) |
| 2190 | { |
| 2191 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2192 | int ret, stream = substream->stream; |
| 2193 | |
| 2194 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 2195 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
| 2196 | |
| 2197 | memcpy(&fe->dpcm[substream->stream].hw_params, params, |
| 2198 | sizeof(struct snd_pcm_hw_params)); |
| 2199 | ret = dpcm_be_dai_hw_params(fe, substream->stream); |
| 2200 | if (ret < 0) { |
| 2201 | dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); |
| 2202 | goto out; |
| 2203 | } |
| 2204 | |
| 2205 | dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", |
| 2206 | fe->dai_link->name, params_rate(params), |
| 2207 | params_channels(params), params_format(params)); |
| 2208 | |
| 2209 | /* call hw_params on the frontend */ |
| 2210 | ret = soc_pcm_hw_params(substream, params); |
| 2211 | if (ret < 0) { |
| 2212 | dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); |
| 2213 | dpcm_be_dai_hw_free(fe, stream); |
| 2214 | } else |
| 2215 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; |
| 2216 | |
| 2217 | out: |
| 2218 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 2219 | mutex_unlock(&fe->card->mutex); |
| 2220 | return ret; |
| 2221 | } |
| 2222 | |
| 2223 | static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, |
| 2224 | struct snd_pcm_substream *substream, int cmd) |
| 2225 | { |
| 2226 | int ret; |
| 2227 | |
| 2228 | dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", |
| 2229 | dpcm->be->dai_link->name, cmd); |
| 2230 | |
| 2231 | ret = soc_pcm_trigger(substream, cmd); |
| 2232 | if (ret < 0) |
| 2233 | dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); |
| 2234 | |
| 2235 | return ret; |
| 2236 | } |
| 2237 | |
| 2238 | int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, |
| 2239 | int cmd) |
| 2240 | { |
| 2241 | struct snd_soc_dpcm *dpcm; |
| 2242 | int ret = 0; |
| 2243 | |
| 2244 | for_each_dpcm_be(fe, stream, dpcm) { |
| 2245 | |
| 2246 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2247 | struct snd_pcm_substream *be_substream = |
| 2248 | snd_soc_dpcm_get_substream(be, stream); |
| 2249 | |
| 2250 | /* is this op for this BE ? */ |
| 2251 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 2252 | continue; |
| 2253 | |
| 2254 | switch (cmd) { |
| 2255 | case SNDRV_PCM_TRIGGER_START: |
| 2256 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && |
| 2257 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) |
| 2258 | continue; |
| 2259 | |
| 2260 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| 2261 | if (ret) |
| 2262 | return ret; |
| 2263 | |
| 2264 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
| 2265 | break; |
| 2266 | case SNDRV_PCM_TRIGGER_RESUME: |
| 2267 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) |
| 2268 | continue; |
| 2269 | |
| 2270 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| 2271 | if (ret) |
| 2272 | return ret; |
| 2273 | |
| 2274 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
| 2275 | break; |
| 2276 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 2277 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
| 2278 | continue; |
| 2279 | |
| 2280 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| 2281 | if (ret) |
| 2282 | return ret; |
| 2283 | |
| 2284 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
| 2285 | break; |
| 2286 | case SNDRV_PCM_TRIGGER_STOP: |
| 2287 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
| 2288 | continue; |
| 2289 | |
| 2290 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| 2291 | continue; |
| 2292 | |
| 2293 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| 2294 | if (ret) |
| 2295 | return ret; |
| 2296 | |
| 2297 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; |
| 2298 | break; |
| 2299 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 2300 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
| 2301 | continue; |
| 2302 | |
| 2303 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| 2304 | continue; |
| 2305 | |
| 2306 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| 2307 | if (ret) |
| 2308 | return ret; |
| 2309 | |
| 2310 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; |
| 2311 | break; |
| 2312 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 2313 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
| 2314 | continue; |
| 2315 | |
| 2316 | if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) |
| 2317 | continue; |
| 2318 | |
| 2319 | ret = dpcm_do_trigger(dpcm, be_substream, cmd); |
| 2320 | if (ret) |
| 2321 | return ret; |
| 2322 | |
| 2323 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; |
| 2324 | break; |
| 2325 | } |
| 2326 | } |
| 2327 | |
| 2328 | return ret; |
| 2329 | } |
| 2330 | EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); |
| 2331 | |
| 2332 | static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream, |
| 2333 | int cmd, bool fe_first) |
| 2334 | { |
| 2335 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2336 | int ret; |
| 2337 | |
| 2338 | /* call trigger on the frontend before the backend. */ |
| 2339 | if (fe_first) { |
| 2340 | dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", |
| 2341 | fe->dai_link->name, cmd); |
| 2342 | |
| 2343 | ret = soc_pcm_trigger(substream, cmd); |
| 2344 | if (ret < 0) |
| 2345 | return ret; |
| 2346 | |
| 2347 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); |
| 2348 | return ret; |
| 2349 | } |
| 2350 | |
| 2351 | /* call trigger on the frontend after the backend. */ |
| 2352 | ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); |
| 2353 | if (ret < 0) |
| 2354 | return ret; |
| 2355 | |
| 2356 | dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", |
| 2357 | fe->dai_link->name, cmd); |
| 2358 | |
| 2359 | ret = soc_pcm_trigger(substream, cmd); |
| 2360 | |
| 2361 | return ret; |
| 2362 | } |
| 2363 | |
| 2364 | static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd) |
| 2365 | { |
| 2366 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2367 | int stream = substream->stream; |
| 2368 | int ret = 0; |
| 2369 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
| 2370 | |
| 2371 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; |
| 2372 | |
| 2373 | switch (trigger) { |
| 2374 | case SND_SOC_DPCM_TRIGGER_PRE: |
| 2375 | switch (cmd) { |
| 2376 | case SNDRV_PCM_TRIGGER_START: |
| 2377 | case SNDRV_PCM_TRIGGER_RESUME: |
| 2378 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 2379 | ret = dpcm_dai_trigger_fe_be(substream, cmd, true); |
| 2380 | break; |
| 2381 | case SNDRV_PCM_TRIGGER_STOP: |
| 2382 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 2383 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 2384 | ret = dpcm_dai_trigger_fe_be(substream, cmd, false); |
| 2385 | break; |
| 2386 | default: |
| 2387 | ret = -EINVAL; |
| 2388 | break; |
| 2389 | } |
| 2390 | break; |
| 2391 | case SND_SOC_DPCM_TRIGGER_POST: |
| 2392 | switch (cmd) { |
| 2393 | case SNDRV_PCM_TRIGGER_START: |
| 2394 | case SNDRV_PCM_TRIGGER_RESUME: |
| 2395 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 2396 | ret = dpcm_dai_trigger_fe_be(substream, cmd, false); |
| 2397 | break; |
| 2398 | case SNDRV_PCM_TRIGGER_STOP: |
| 2399 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 2400 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 2401 | ret = dpcm_dai_trigger_fe_be(substream, cmd, true); |
| 2402 | break; |
| 2403 | default: |
| 2404 | ret = -EINVAL; |
| 2405 | break; |
| 2406 | } |
| 2407 | break; |
| 2408 | case SND_SOC_DPCM_TRIGGER_BESPOKE: |
| 2409 | /* bespoke trigger() - handles both FE and BEs */ |
| 2410 | |
| 2411 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", |
| 2412 | fe->dai_link->name, cmd); |
| 2413 | |
| 2414 | ret = soc_pcm_bespoke_trigger(substream, cmd); |
| 2415 | break; |
| 2416 | default: |
| 2417 | dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, |
| 2418 | fe->dai_link->name); |
| 2419 | ret = -EINVAL; |
| 2420 | goto out; |
| 2421 | } |
| 2422 | |
| 2423 | if (ret < 0) { |
| 2424 | dev_err(fe->dev, "ASoC: trigger FE cmd: %d failed: %d\n", |
| 2425 | cmd, ret); |
| 2426 | goto out; |
| 2427 | } |
| 2428 | |
| 2429 | switch (cmd) { |
| 2430 | case SNDRV_PCM_TRIGGER_START: |
| 2431 | case SNDRV_PCM_TRIGGER_RESUME: |
| 2432 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 2433 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
| 2434 | break; |
| 2435 | case SNDRV_PCM_TRIGGER_STOP: |
| 2436 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 2437 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; |
| 2438 | break; |
| 2439 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 2440 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; |
| 2441 | break; |
| 2442 | } |
| 2443 | |
| 2444 | out: |
| 2445 | fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
| 2446 | return ret; |
| 2447 | } |
| 2448 | |
| 2449 | static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) |
| 2450 | { |
| 2451 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2452 | int stream = substream->stream; |
| 2453 | |
| 2454 | /* if FE's runtime_update is already set, we're in race; |
| 2455 | * process this trigger later at exit |
| 2456 | */ |
| 2457 | if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) { |
| 2458 | fe->dpcm[stream].trigger_pending = cmd + 1; |
| 2459 | return 0; /* delayed, assuming it's successful */ |
| 2460 | } |
| 2461 | |
| 2462 | /* we're alone, let's trigger */ |
| 2463 | return dpcm_fe_dai_do_trigger(substream, cmd); |
| 2464 | } |
| 2465 | |
| 2466 | int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) |
| 2467 | { |
| 2468 | struct snd_soc_dpcm *dpcm; |
| 2469 | int ret = 0; |
| 2470 | |
| 2471 | for_each_dpcm_be(fe, stream, dpcm) { |
| 2472 | |
| 2473 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2474 | struct snd_pcm_substream *be_substream = |
| 2475 | snd_soc_dpcm_get_substream(be, stream); |
| 2476 | |
| 2477 | /* is this op for this BE ? */ |
| 2478 | if (!snd_soc_dpcm_be_can_update(fe, be, stream)) |
| 2479 | continue; |
| 2480 | |
| 2481 | if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && |
| 2482 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && |
| 2483 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND) && |
| 2484 | (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) |
| 2485 | continue; |
| 2486 | |
| 2487 | dev_dbg(be->dev, "ASoC: prepare BE %s\n", |
| 2488 | be->dai_link->name); |
| 2489 | |
| 2490 | ret = soc_pcm_prepare(be_substream); |
| 2491 | if (ret < 0) { |
| 2492 | dev_err(be->dev, "ASoC: backend prepare failed %d\n", |
| 2493 | ret); |
| 2494 | break; |
| 2495 | } |
| 2496 | |
| 2497 | be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
| 2498 | } |
| 2499 | return ret; |
| 2500 | } |
| 2501 | |
| 2502 | static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) |
| 2503 | { |
| 2504 | struct snd_soc_pcm_runtime *fe = substream->private_data; |
| 2505 | int stream = substream->stream, ret = 0; |
| 2506 | |
| 2507 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 2508 | |
| 2509 | dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); |
| 2510 | |
| 2511 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); |
| 2512 | |
| 2513 | /* there is no point preparing this FE if there are no BEs */ |
| 2514 | if (list_empty(&fe->dpcm[stream].be_clients)) { |
| 2515 | dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", |
| 2516 | fe->dai_link->name); |
| 2517 | ret = -EINVAL; |
| 2518 | goto out; |
| 2519 | } |
| 2520 | |
| 2521 | ret = dpcm_be_dai_prepare(fe, substream->stream); |
| 2522 | if (ret < 0) |
| 2523 | goto out; |
| 2524 | |
| 2525 | /* call prepare on the frontend */ |
| 2526 | ret = soc_pcm_prepare(substream); |
| 2527 | if (ret < 0) { |
| 2528 | dev_err(fe->dev,"ASoC: prepare FE %s failed\n", |
| 2529 | fe->dai_link->name); |
| 2530 | goto out; |
| 2531 | } |
| 2532 | |
| 2533 | /* run the stream event for each BE */ |
| 2534 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); |
| 2535 | fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; |
| 2536 | |
| 2537 | out: |
| 2538 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 2539 | mutex_unlock(&fe->card->mutex); |
| 2540 | |
| 2541 | return ret; |
| 2542 | } |
| 2543 | |
| 2544 | static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) |
| 2545 | { |
| 2546 | struct snd_pcm_substream *substream = |
| 2547 | snd_soc_dpcm_get_substream(fe, stream); |
| 2548 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
| 2549 | int err; |
| 2550 | |
| 2551 | dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", |
| 2552 | stream ? "capture" : "playback", fe->dai_link->name); |
| 2553 | |
| 2554 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
| 2555 | /* call bespoke trigger - FE takes care of all BE triggers */ |
| 2556 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", |
| 2557 | fe->dai_link->name); |
| 2558 | |
| 2559 | err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
| 2560 | if (err < 0) |
| 2561 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
| 2562 | } else { |
| 2563 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", |
| 2564 | fe->dai_link->name); |
| 2565 | |
| 2566 | err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); |
| 2567 | if (err < 0) |
| 2568 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); |
| 2569 | } |
| 2570 | |
| 2571 | err = dpcm_be_dai_hw_free(fe, stream); |
| 2572 | if (err < 0) |
| 2573 | dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); |
| 2574 | |
| 2575 | err = dpcm_be_dai_shutdown(fe, stream); |
| 2576 | if (err < 0) |
| 2577 | dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); |
| 2578 | |
| 2579 | /* run the stream event for each BE */ |
| 2580 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); |
| 2581 | |
| 2582 | return 0; |
| 2583 | } |
| 2584 | |
| 2585 | static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) |
| 2586 | { |
| 2587 | struct snd_pcm_substream *substream = |
| 2588 | snd_soc_dpcm_get_substream(fe, stream); |
| 2589 | struct snd_soc_dpcm *dpcm; |
| 2590 | enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; |
| 2591 | int ret; |
| 2592 | unsigned long flags; |
| 2593 | |
| 2594 | dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", |
| 2595 | stream ? "capture" : "playback", fe->dai_link->name); |
| 2596 | |
| 2597 | /* Only start the BE if the FE is ready */ |
| 2598 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || |
| 2599 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) |
| 2600 | return -EINVAL; |
| 2601 | |
| 2602 | /* startup must always be called for new BEs */ |
| 2603 | ret = dpcm_be_dai_startup(fe, stream); |
| 2604 | if (ret < 0) |
| 2605 | goto disconnect; |
| 2606 | |
| 2607 | /* keep going if FE state is > open */ |
| 2608 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) |
| 2609 | return 0; |
| 2610 | |
| 2611 | ret = dpcm_be_dai_hw_params(fe, stream); |
| 2612 | if (ret < 0) |
| 2613 | goto close; |
| 2614 | |
| 2615 | /* keep going if FE state is > hw_params */ |
| 2616 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) |
| 2617 | return 0; |
| 2618 | |
| 2619 | |
| 2620 | ret = dpcm_be_dai_prepare(fe, stream); |
| 2621 | if (ret < 0) |
| 2622 | goto hw_free; |
| 2623 | |
| 2624 | /* run the stream event for each BE */ |
| 2625 | dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); |
| 2626 | |
| 2627 | /* keep going if FE state is > prepare */ |
| 2628 | if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || |
| 2629 | fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) |
| 2630 | return 0; |
| 2631 | |
| 2632 | if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { |
| 2633 | /* call trigger on the frontend - FE takes care of all BE triggers */ |
| 2634 | dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", |
| 2635 | fe->dai_link->name); |
| 2636 | |
| 2637 | ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); |
| 2638 | if (ret < 0) { |
| 2639 | dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); |
| 2640 | goto hw_free; |
| 2641 | } |
| 2642 | } else { |
| 2643 | dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", |
| 2644 | fe->dai_link->name); |
| 2645 | |
| 2646 | ret = dpcm_be_dai_trigger(fe, stream, |
| 2647 | SNDRV_PCM_TRIGGER_START); |
| 2648 | if (ret < 0) { |
| 2649 | dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); |
| 2650 | goto hw_free; |
| 2651 | } |
| 2652 | } |
| 2653 | |
| 2654 | return 0; |
| 2655 | |
| 2656 | hw_free: |
| 2657 | dpcm_be_dai_hw_free(fe, stream); |
| 2658 | close: |
| 2659 | dpcm_be_dai_shutdown(fe, stream); |
| 2660 | disconnect: |
| 2661 | /* disconnect any non started BEs */ |
| 2662 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 2663 | for_each_dpcm_be(fe, stream, dpcm) { |
| 2664 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2665 | if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) |
| 2666 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; |
| 2667 | } |
| 2668 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 2669 | |
| 2670 | return ret; |
| 2671 | } |
| 2672 | |
| 2673 | static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) |
| 2674 | { |
| 2675 | int ret; |
| 2676 | |
| 2677 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE); |
| 2678 | ret = dpcm_run_update_startup(fe, stream); |
| 2679 | if (ret < 0) |
| 2680 | dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); |
| 2681 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 2682 | |
| 2683 | return ret; |
| 2684 | } |
| 2685 | |
| 2686 | static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) |
| 2687 | { |
| 2688 | int ret; |
| 2689 | |
| 2690 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE); |
| 2691 | ret = dpcm_run_update_shutdown(fe, stream); |
| 2692 | if (ret < 0) |
| 2693 | dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); |
| 2694 | dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); |
| 2695 | |
| 2696 | return ret; |
| 2697 | } |
| 2698 | |
| 2699 | static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new) |
| 2700 | { |
| 2701 | struct snd_soc_dapm_widget_list *list; |
| 2702 | int count, paths; |
| 2703 | |
| 2704 | if (!fe->dai_link->dynamic) |
| 2705 | return 0; |
| 2706 | |
| 2707 | /* only check active links */ |
| 2708 | if (!fe->cpu_dai->active) |
| 2709 | return 0; |
| 2710 | |
| 2711 | /* DAPM sync will call this to update DSP paths */ |
| 2712 | dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n", |
| 2713 | new ? "new" : "old", fe->dai_link->name); |
| 2714 | |
| 2715 | /* skip if FE doesn't have playback capability */ |
| 2716 | if (!snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_PLAYBACK) || |
| 2717 | !snd_soc_dai_stream_valid(fe->codec_dai, SNDRV_PCM_STREAM_PLAYBACK)) |
| 2718 | goto capture; |
| 2719 | |
| 2720 | /* skip if FE isn't currently playing */ |
| 2721 | if (!fe->cpu_dai->playback_active || !fe->codec_dai->playback_active) |
| 2722 | goto capture; |
| 2723 | |
| 2724 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); |
| 2725 | if (paths < 0) { |
| 2726 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
| 2727 | fe->dai_link->name, "playback"); |
| 2728 | return paths; |
| 2729 | } |
| 2730 | |
| 2731 | /* update any playback paths */ |
| 2732 | count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, new); |
| 2733 | if (count) { |
| 2734 | if (new) |
| 2735 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); |
| 2736 | else |
| 2737 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); |
| 2738 | |
| 2739 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); |
| 2740 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); |
| 2741 | } |
| 2742 | |
| 2743 | dpcm_path_put(&list); |
| 2744 | |
| 2745 | capture: |
| 2746 | /* skip if FE doesn't have capture capability */ |
| 2747 | if (!snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_CAPTURE) || |
| 2748 | !snd_soc_dai_stream_valid(fe->codec_dai, SNDRV_PCM_STREAM_CAPTURE)) |
| 2749 | return 0; |
| 2750 | |
| 2751 | /* skip if FE isn't currently capturing */ |
| 2752 | if (!fe->cpu_dai->capture_active || !fe->codec_dai->capture_active) |
| 2753 | return 0; |
| 2754 | |
| 2755 | paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); |
| 2756 | if (paths < 0) { |
| 2757 | dev_warn(fe->dev, "ASoC: %s no valid %s path\n", |
| 2758 | fe->dai_link->name, "capture"); |
| 2759 | return paths; |
| 2760 | } |
| 2761 | |
| 2762 | /* update any old capture paths */ |
| 2763 | count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, new); |
| 2764 | if (count) { |
| 2765 | if (new) |
| 2766 | dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); |
| 2767 | else |
| 2768 | dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); |
| 2769 | |
| 2770 | dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); |
| 2771 | dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); |
| 2772 | } |
| 2773 | |
| 2774 | dpcm_path_put(&list); |
| 2775 | |
| 2776 | return 0; |
| 2777 | } |
| 2778 | |
| 2779 | /* Called by DAPM mixer/mux changes to update audio routing between PCMs and |
| 2780 | * any DAI links. |
| 2781 | */ |
| 2782 | int soc_dpcm_runtime_update(struct snd_soc_card *card) |
| 2783 | { |
| 2784 | struct snd_soc_pcm_runtime *fe; |
| 2785 | int ret = 0; |
| 2786 | |
| 2787 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 2788 | /* shutdown all old paths first */ |
| 2789 | for_each_card_rtds(card, fe) { |
| 2790 | ret = soc_dpcm_fe_runtime_update(fe, 0); |
| 2791 | if (ret) |
| 2792 | goto out; |
| 2793 | } |
| 2794 | |
| 2795 | /* bring new paths up */ |
| 2796 | for_each_card_rtds(card, fe) { |
| 2797 | ret = soc_dpcm_fe_runtime_update(fe, 1); |
| 2798 | if (ret) |
| 2799 | goto out; |
| 2800 | } |
| 2801 | |
| 2802 | out: |
| 2803 | mutex_unlock(&card->mutex); |
| 2804 | return ret; |
| 2805 | } |
| 2806 | int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) |
| 2807 | { |
| 2808 | struct snd_soc_dpcm *dpcm; |
| 2809 | struct snd_soc_dai *dai; |
| 2810 | |
| 2811 | for_each_dpcm_be(fe, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { |
| 2812 | |
| 2813 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 2814 | int i; |
| 2815 | |
| 2816 | if (be->dai_link->ignore_suspend) |
| 2817 | continue; |
| 2818 | |
| 2819 | for_each_rtd_codec_dai(be, i, dai) { |
| 2820 | struct snd_soc_dai_driver *drv = dai->driver; |
| 2821 | |
| 2822 | dev_dbg(be->dev, "ASoC: BE digital mute %s\n", |
| 2823 | be->dai_link->name); |
| 2824 | |
| 2825 | if (drv->ops && drv->ops->digital_mute && |
| 2826 | dai->playback_active) |
| 2827 | drv->ops->digital_mute(dai, mute); |
| 2828 | } |
| 2829 | } |
| 2830 | |
| 2831 | return 0; |
| 2832 | } |
| 2833 | |
| 2834 | static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) |
| 2835 | { |
| 2836 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| 2837 | struct snd_soc_dpcm *dpcm; |
| 2838 | struct snd_soc_dapm_widget_list *list; |
| 2839 | int ret; |
| 2840 | int stream = fe_substream->stream; |
| 2841 | |
| 2842 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 2843 | fe->dpcm[stream].runtime = fe_substream->runtime; |
| 2844 | |
| 2845 | ret = dpcm_path_get(fe, stream, &list); |
| 2846 | if (ret < 0) { |
| 2847 | mutex_unlock(&fe->card->mutex); |
| 2848 | return ret; |
| 2849 | } else if (ret == 0) { |
| 2850 | dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", |
| 2851 | fe->dai_link->name, stream ? "capture" : "playback"); |
| 2852 | } |
| 2853 | |
| 2854 | /* calculate valid and active FE <-> BE dpcms */ |
| 2855 | dpcm_process_paths(fe, stream, &list, 1); |
| 2856 | |
| 2857 | ret = dpcm_fe_dai_startup(fe_substream); |
| 2858 | if (ret < 0) { |
| 2859 | /* clean up all links */ |
| 2860 | for_each_dpcm_be(fe, stream, dpcm) |
| 2861 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; |
| 2862 | |
| 2863 | dpcm_be_disconnect(fe, stream); |
| 2864 | fe->dpcm[stream].runtime = NULL; |
| 2865 | } |
| 2866 | |
| 2867 | dpcm_clear_pending_state(fe, stream); |
| 2868 | dpcm_path_put(&list); |
| 2869 | mutex_unlock(&fe->card->mutex); |
| 2870 | return ret; |
| 2871 | } |
| 2872 | |
| 2873 | static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) |
| 2874 | { |
| 2875 | struct snd_soc_pcm_runtime *fe = fe_substream->private_data; |
| 2876 | struct snd_soc_dpcm *dpcm; |
| 2877 | int stream = fe_substream->stream, ret; |
| 2878 | |
| 2879 | mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| 2880 | ret = dpcm_fe_dai_shutdown(fe_substream); |
| 2881 | |
| 2882 | /* mark FE's links ready to prune */ |
| 2883 | for_each_dpcm_be(fe, stream, dpcm) |
| 2884 | dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; |
| 2885 | |
| 2886 | dpcm_be_disconnect(fe, stream); |
| 2887 | |
| 2888 | fe->dpcm[stream].runtime = NULL; |
| 2889 | mutex_unlock(&fe->card->mutex); |
| 2890 | return ret; |
| 2891 | } |
| 2892 | |
| 2893 | static void soc_pcm_private_free(struct snd_pcm *pcm) |
| 2894 | { |
| 2895 | struct snd_soc_pcm_runtime *rtd = pcm->private_data; |
| 2896 | |
| 2897 | /* need to sync the delayed work before releasing resources */ |
| 2898 | flush_delayed_work(&rtd->delayed_work); |
| 2899 | snd_soc_pcm_component_free(pcm); |
| 2900 | } |
| 2901 | |
| 2902 | /* create a new pcm */ |
| 2903 | int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) |
| 2904 | { |
| 2905 | struct snd_soc_dai *codec_dai; |
| 2906 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 2907 | struct snd_soc_rtdcom_list *rtdcom; |
| 2908 | struct snd_soc_component *component; |
| 2909 | struct snd_pcm *pcm; |
| 2910 | char new_name[64]; |
| 2911 | int ret = 0, playback = 0, capture = 0; |
| 2912 | int i; |
| 2913 | |
| 2914 | if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { |
| 2915 | playback = rtd->dai_link->dpcm_playback; |
| 2916 | capture = rtd->dai_link->dpcm_capture; |
| 2917 | } else { |
| 2918 | /* Adapt stream for codec2codec links */ |
| 2919 | struct snd_soc_pcm_stream *cpu_capture = rtd->dai_link->params ? |
| 2920 | &cpu_dai->driver->playback : &cpu_dai->driver->capture; |
| 2921 | struct snd_soc_pcm_stream *cpu_playback = rtd->dai_link->params ? |
| 2922 | &cpu_dai->driver->capture : &cpu_dai->driver->playback; |
| 2923 | |
| 2924 | for_each_rtd_codec_dai(rtd, i, codec_dai) { |
| 2925 | if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && |
| 2926 | snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK)) |
| 2927 | playback = 1; |
| 2928 | if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && |
| 2929 | snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE)) |
| 2930 | capture = 1; |
| 2931 | } |
| 2932 | |
| 2933 | capture = capture && cpu_capture->channels_min; |
| 2934 | playback = playback && cpu_playback->channels_min; |
| 2935 | } |
| 2936 | |
| 2937 | if (rtd->dai_link->playback_only) { |
| 2938 | playback = 1; |
| 2939 | capture = 0; |
| 2940 | } |
| 2941 | |
| 2942 | if (rtd->dai_link->capture_only) { |
| 2943 | playback = 0; |
| 2944 | capture = 1; |
| 2945 | } |
| 2946 | |
| 2947 | /* create the PCM */ |
| 2948 | if (rtd->dai_link->params) { |
| 2949 | snprintf(new_name, sizeof(new_name), "codec2codec(%s)", |
| 2950 | rtd->dai_link->stream_name); |
| 2951 | |
| 2952 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, |
| 2953 | playback, capture, &pcm); |
| 2954 | } else if (rtd->dai_link->no_pcm) { |
| 2955 | snprintf(new_name, sizeof(new_name), "(%s)", |
| 2956 | rtd->dai_link->stream_name); |
| 2957 | |
| 2958 | ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, |
| 2959 | playback, capture, &pcm); |
| 2960 | } else { |
| 2961 | if (rtd->dai_link->dynamic) |
| 2962 | snprintf(new_name, sizeof(new_name), "%s (*)", |
| 2963 | rtd->dai_link->stream_name); |
| 2964 | else |
| 2965 | snprintf(new_name, sizeof(new_name), "%s %s-%d", |
| 2966 | rtd->dai_link->stream_name, |
| 2967 | (rtd->num_codecs > 1) ? |
| 2968 | "multicodec" : rtd->codec_dai->name, num); |
| 2969 | |
| 2970 | ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, |
| 2971 | capture, &pcm); |
| 2972 | } |
| 2973 | if (ret < 0) { |
| 2974 | dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", |
| 2975 | rtd->dai_link->name); |
| 2976 | return ret; |
| 2977 | } |
| 2978 | dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); |
| 2979 | |
| 2980 | /* DAPM dai link stream work */ |
| 2981 | if (rtd->dai_link->params) |
| 2982 | INIT_DELAYED_WORK(&rtd->delayed_work, |
| 2983 | codec2codec_close_delayed_work); |
| 2984 | else |
| 2985 | INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); |
| 2986 | |
| 2987 | pcm->nonatomic = rtd->dai_link->nonatomic; |
| 2988 | rtd->pcm = pcm; |
| 2989 | pcm->private_data = rtd; |
| 2990 | |
| 2991 | if (rtd->dai_link->no_pcm || rtd->dai_link->params) { |
| 2992 | if (playback) |
| 2993 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; |
| 2994 | if (capture) |
| 2995 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; |
| 2996 | goto out; |
| 2997 | } |
| 2998 | |
| 2999 | /* ASoC PCM operations */ |
| 3000 | if (rtd->dai_link->dynamic) { |
| 3001 | rtd->ops.open = dpcm_fe_dai_open; |
| 3002 | rtd->ops.hw_params = dpcm_fe_dai_hw_params; |
| 3003 | rtd->ops.prepare = dpcm_fe_dai_prepare; |
| 3004 | rtd->ops.trigger = dpcm_fe_dai_trigger; |
| 3005 | rtd->ops.hw_free = dpcm_fe_dai_hw_free; |
| 3006 | rtd->ops.close = dpcm_fe_dai_close; |
| 3007 | rtd->ops.pointer = soc_pcm_pointer; |
| 3008 | } else { |
| 3009 | rtd->ops.open = soc_pcm_open; |
| 3010 | rtd->ops.hw_params = soc_pcm_hw_params; |
| 3011 | rtd->ops.prepare = soc_pcm_prepare; |
| 3012 | rtd->ops.trigger = soc_pcm_trigger; |
| 3013 | rtd->ops.hw_free = soc_pcm_hw_free; |
| 3014 | rtd->ops.close = soc_pcm_close; |
| 3015 | rtd->ops.pointer = soc_pcm_pointer; |
| 3016 | } |
| 3017 | |
| 3018 | for_each_rtd_components(rtd, rtdcom, component) { |
| 3019 | const struct snd_soc_component_driver *drv = component->driver; |
| 3020 | |
| 3021 | if (drv->ioctl) |
| 3022 | rtd->ops.ioctl = snd_soc_pcm_component_ioctl; |
| 3023 | if (drv->copy_user) |
| 3024 | rtd->ops.copy_user = snd_soc_pcm_component_copy_user; |
| 3025 | if (drv->page) |
| 3026 | rtd->ops.page = snd_soc_pcm_component_page; |
| 3027 | if (drv->mmap) |
| 3028 | rtd->ops.mmap = snd_soc_pcm_component_mmap; |
| 3029 | } |
| 3030 | |
| 3031 | if (playback) |
| 3032 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); |
| 3033 | |
| 3034 | if (capture) |
| 3035 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); |
| 3036 | |
| 3037 | ret = snd_soc_pcm_component_new(pcm); |
| 3038 | if (ret < 0) { |
| 3039 | dev_err(rtd->dev, "ASoC: pcm constructor failed: %d\n", ret); |
| 3040 | return ret; |
| 3041 | } |
| 3042 | |
| 3043 | pcm->private_free = soc_pcm_private_free; |
| 3044 | pcm->no_device_suspend = true; |
| 3045 | out: |
| 3046 | dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", |
| 3047 | (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name, |
| 3048 | cpu_dai->name); |
| 3049 | return ret; |
| 3050 | } |
| 3051 | |
| 3052 | /* is the current PCM operation for this FE ? */ |
| 3053 | int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) |
| 3054 | { |
| 3055 | if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) |
| 3056 | return 1; |
| 3057 | return 0; |
| 3058 | } |
| 3059 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); |
| 3060 | |
| 3061 | /* is the current PCM operation for this BE ? */ |
| 3062 | int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, |
| 3063 | struct snd_soc_pcm_runtime *be, int stream) |
| 3064 | { |
| 3065 | if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || |
| 3066 | ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && |
| 3067 | be->dpcm[stream].runtime_update)) |
| 3068 | return 1; |
| 3069 | return 0; |
| 3070 | } |
| 3071 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); |
| 3072 | |
| 3073 | /* get the substream for this BE */ |
| 3074 | struct snd_pcm_substream * |
| 3075 | snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) |
| 3076 | { |
| 3077 | return be->pcm->streams[stream].substream; |
| 3078 | } |
| 3079 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); |
| 3080 | |
| 3081 | /* get the BE runtime state */ |
| 3082 | enum snd_soc_dpcm_state |
| 3083 | snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) |
| 3084 | { |
| 3085 | return be->dpcm[stream].state; |
| 3086 | } |
| 3087 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); |
| 3088 | |
| 3089 | /* set the BE runtime state */ |
| 3090 | void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, |
| 3091 | int stream, enum snd_soc_dpcm_state state) |
| 3092 | { |
| 3093 | be->dpcm[stream].state = state; |
| 3094 | } |
| 3095 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); |
| 3096 | |
| 3097 | /* |
| 3098 | * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE |
| 3099 | * are not running, paused or suspended for the specified stream direction. |
| 3100 | */ |
| 3101 | int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, |
| 3102 | struct snd_soc_pcm_runtime *be, int stream) |
| 3103 | { |
| 3104 | struct snd_soc_dpcm *dpcm; |
| 3105 | int state; |
| 3106 | int ret = 1; |
| 3107 | unsigned long flags; |
| 3108 | |
| 3109 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 3110 | for_each_dpcm_fe(be, stream, dpcm) { |
| 3111 | |
| 3112 | if (dpcm->fe == fe) |
| 3113 | continue; |
| 3114 | |
| 3115 | state = dpcm->fe->dpcm[stream].state; |
| 3116 | if (state == SND_SOC_DPCM_STATE_START || |
| 3117 | state == SND_SOC_DPCM_STATE_PAUSED || |
| 3118 | state == SND_SOC_DPCM_STATE_SUSPEND) { |
| 3119 | ret = 0; |
| 3120 | break; |
| 3121 | } |
| 3122 | } |
| 3123 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 3124 | |
| 3125 | /* it's safe to free/stop this BE DAI */ |
| 3126 | return ret; |
| 3127 | } |
| 3128 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); |
| 3129 | |
| 3130 | /* |
| 3131 | * We can only change hw params a BE DAI if any of it's FE are not prepared, |
| 3132 | * running, paused or suspended for the specified stream direction. |
| 3133 | */ |
| 3134 | int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, |
| 3135 | struct snd_soc_pcm_runtime *be, int stream) |
| 3136 | { |
| 3137 | struct snd_soc_dpcm *dpcm; |
| 3138 | int state; |
| 3139 | int ret = 1; |
| 3140 | unsigned long flags; |
| 3141 | |
| 3142 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 3143 | for_each_dpcm_fe(be, stream, dpcm) { |
| 3144 | |
| 3145 | if (dpcm->fe == fe) |
| 3146 | continue; |
| 3147 | |
| 3148 | state = dpcm->fe->dpcm[stream].state; |
| 3149 | if (state == SND_SOC_DPCM_STATE_START || |
| 3150 | state == SND_SOC_DPCM_STATE_PAUSED || |
| 3151 | state == SND_SOC_DPCM_STATE_SUSPEND || |
| 3152 | state == SND_SOC_DPCM_STATE_PREPARE) { |
| 3153 | ret = 0; |
| 3154 | break; |
| 3155 | } |
| 3156 | } |
| 3157 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 3158 | |
| 3159 | /* it's safe to change hw_params */ |
| 3160 | return ret; |
| 3161 | } |
| 3162 | EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); |
| 3163 | |
| 3164 | #ifdef CONFIG_DEBUG_FS |
| 3165 | static const char *dpcm_state_string(enum snd_soc_dpcm_state state) |
| 3166 | { |
| 3167 | switch (state) { |
| 3168 | case SND_SOC_DPCM_STATE_NEW: |
| 3169 | return "new"; |
| 3170 | case SND_SOC_DPCM_STATE_OPEN: |
| 3171 | return "open"; |
| 3172 | case SND_SOC_DPCM_STATE_HW_PARAMS: |
| 3173 | return "hw_params"; |
| 3174 | case SND_SOC_DPCM_STATE_PREPARE: |
| 3175 | return "prepare"; |
| 3176 | case SND_SOC_DPCM_STATE_START: |
| 3177 | return "start"; |
| 3178 | case SND_SOC_DPCM_STATE_STOP: |
| 3179 | return "stop"; |
| 3180 | case SND_SOC_DPCM_STATE_SUSPEND: |
| 3181 | return "suspend"; |
| 3182 | case SND_SOC_DPCM_STATE_PAUSED: |
| 3183 | return "paused"; |
| 3184 | case SND_SOC_DPCM_STATE_HW_FREE: |
| 3185 | return "hw_free"; |
| 3186 | case SND_SOC_DPCM_STATE_CLOSE: |
| 3187 | return "close"; |
| 3188 | } |
| 3189 | |
| 3190 | return "unknown"; |
| 3191 | } |
| 3192 | |
| 3193 | static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, |
| 3194 | int stream, char *buf, size_t size) |
| 3195 | { |
| 3196 | struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; |
| 3197 | struct snd_soc_dpcm *dpcm; |
| 3198 | ssize_t offset = 0; |
| 3199 | unsigned long flags; |
| 3200 | |
| 3201 | /* FE state */ |
| 3202 | offset += snprintf(buf + offset, size - offset, |
| 3203 | "[%s - %s]\n", fe->dai_link->name, |
| 3204 | stream ? "Capture" : "Playback"); |
| 3205 | |
| 3206 | offset += snprintf(buf + offset, size - offset, "State: %s\n", |
| 3207 | dpcm_state_string(fe->dpcm[stream].state)); |
| 3208 | |
| 3209 | if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && |
| 3210 | (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) |
| 3211 | offset += snprintf(buf + offset, size - offset, |
| 3212 | "Hardware Params: " |
| 3213 | "Format = %s, Channels = %d, Rate = %d\n", |
| 3214 | snd_pcm_format_name(params_format(params)), |
| 3215 | params_channels(params), |
| 3216 | params_rate(params)); |
| 3217 | |
| 3218 | /* BEs state */ |
| 3219 | offset += snprintf(buf + offset, size - offset, "Backends:\n"); |
| 3220 | |
| 3221 | if (list_empty(&fe->dpcm[stream].be_clients)) { |
| 3222 | offset += snprintf(buf + offset, size - offset, |
| 3223 | " No active DSP links\n"); |
| 3224 | goto out; |
| 3225 | } |
| 3226 | |
| 3227 | spin_lock_irqsave(&fe->card->dpcm_lock, flags); |
| 3228 | for_each_dpcm_be(fe, stream, dpcm) { |
| 3229 | struct snd_soc_pcm_runtime *be = dpcm->be; |
| 3230 | params = &dpcm->hw_params; |
| 3231 | |
| 3232 | offset += snprintf(buf + offset, size - offset, |
| 3233 | "- %s\n", be->dai_link->name); |
| 3234 | |
| 3235 | offset += snprintf(buf + offset, size - offset, |
| 3236 | " State: %s\n", |
| 3237 | dpcm_state_string(be->dpcm[stream].state)); |
| 3238 | |
| 3239 | if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && |
| 3240 | (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) |
| 3241 | offset += snprintf(buf + offset, size - offset, |
| 3242 | " Hardware Params: " |
| 3243 | "Format = %s, Channels = %d, Rate = %d\n", |
| 3244 | snd_pcm_format_name(params_format(params)), |
| 3245 | params_channels(params), |
| 3246 | params_rate(params)); |
| 3247 | } |
| 3248 | spin_unlock_irqrestore(&fe->card->dpcm_lock, flags); |
| 3249 | out: |
| 3250 | return offset; |
| 3251 | } |
| 3252 | |
| 3253 | static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, |
| 3254 | size_t count, loff_t *ppos) |
| 3255 | { |
| 3256 | struct snd_soc_pcm_runtime *fe = file->private_data; |
| 3257 | ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; |
| 3258 | char *buf; |
| 3259 | |
| 3260 | buf = kmalloc(out_count, GFP_KERNEL); |
| 3261 | if (!buf) |
| 3262 | return -ENOMEM; |
| 3263 | |
| 3264 | if (snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_PLAYBACK)) |
| 3265 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, |
| 3266 | buf + offset, out_count - offset); |
| 3267 | |
| 3268 | if (snd_soc_dai_stream_valid(fe->cpu_dai, SNDRV_PCM_STREAM_CAPTURE)) |
| 3269 | offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, |
| 3270 | buf + offset, out_count - offset); |
| 3271 | |
| 3272 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); |
| 3273 | |
| 3274 | kfree(buf); |
| 3275 | return ret; |
| 3276 | } |
| 3277 | |
| 3278 | static const struct file_operations dpcm_state_fops = { |
| 3279 | .open = simple_open, |
| 3280 | .read = dpcm_state_read_file, |
| 3281 | .llseek = default_llseek, |
| 3282 | }; |
| 3283 | |
| 3284 | void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) |
| 3285 | { |
| 3286 | if (!rtd->dai_link) |
| 3287 | return; |
| 3288 | |
| 3289 | if (!rtd->dai_link->dynamic) |
| 3290 | return; |
| 3291 | |
| 3292 | if (!rtd->card->debugfs_card_root) |
| 3293 | return; |
| 3294 | |
| 3295 | rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, |
| 3296 | rtd->card->debugfs_card_root); |
| 3297 | |
| 3298 | debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root, |
| 3299 | rtd, &dpcm_state_fops); |
| 3300 | } |
| 3301 | #endif |