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| 1 /* |
| 2 * sst_platform.c - Intel MID Platform driver |
| 3 * |
| 4 * Copyright (C) 2010 Intel Corp |
| 5 * Author: Vinod Koul <vinod.koul@intel.com> |
| 6 * Author: Harsha Priya <priya.harsha@intel.com> |
| 7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 8 * |
| 9 * This program is free software; you can redistribute it and/or modify |
| 10 * it under the terms of the GNU General Public License as published by |
| 11 * the Free Software Foundation; version 2 of the License. |
| 12 * |
| 13 * This program is distributed in the hope that it will be useful, but |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 * General Public License for more details. |
| 17 * |
| 18 * You should have received a copy of the GNU General Public License along |
| 19 * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 21 * |
| 22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 23 * |
| 24 * |
| 25 */ |
| 26 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 27 |
| 28 #include <linux/slab.h> |
| 29 #include <linux/io.h> |
| 30 #include <sound/core.h> |
| 31 #include <sound/pcm.h> |
| 32 #include <sound/pcm_params.h> |
| 33 #include <sound/soc.h> |
| 34 #include "../../../drivers/staging/intel_sst/intel_sst_ioctl.h" |
| 35 #include "../../../drivers/staging/intel_sst/intel_sst.h" |
| 36 #include "sst_platform.h" |
| 37 |
| 38 static struct snd_pcm_hardware sst_platform_pcm_hw = { |
| 39 .info = (SNDRV_PCM_INFO_INTERLEAVED | |
| 40 SNDRV_PCM_INFO_DOUBLE | |
| 41 SNDRV_PCM_INFO_PAUSE | |
| 42 SNDRV_PCM_INFO_RESUME | |
| 43 SNDRV_PCM_INFO_MMAP| |
| 44 SNDRV_PCM_INFO_MMAP_VALID | |
| 45 SNDRV_PCM_INFO_BLOCK_TRANSFER | |
| 46 SNDRV_PCM_INFO_SYNC_START), |
| 47 .formats = (SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_U16 | |
| 48 SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_U24 | |
| 49 SNDRV_PCM_FMTBIT_S32 | SNDRV_PCM_FMTBIT_U32), |
| 50 .rates = (SNDRV_PCM_RATE_8000| |
| 51 SNDRV_PCM_RATE_44100 | |
| 52 SNDRV_PCM_RATE_48000), |
| 53 .rate_min = SST_MIN_RATE, |
| 54 .rate_max = SST_MAX_RATE, |
| 55 .channels_min = SST_MIN_CHANNEL, |
| 56 .channels_max = SST_MAX_CHANNEL, |
| 57 .buffer_bytes_max = SST_MAX_BUFFER, |
| 58 .period_bytes_min = SST_MIN_PERIOD_BYTES, |
| 59 .period_bytes_max = SST_MAX_PERIOD_BYTES, |
| 60 .periods_min = SST_MIN_PERIODS, |
| 61 .periods_max = SST_MAX_PERIODS, |
| 62 .fifo_size = SST_FIFO_SIZE, |
| 63 }; |
| 64 |
| 65 /* MFLD - MSIC */ |
| 66 struct snd_soc_dai_driver sst_platform_dai[] = { |
| 67 { |
| 68 .name = "Headset-cpu-dai", |
| 69 .id = 0, |
| 70 .playback = { |
| 71 .channels_min = SST_STEREO, |
| 72 .channels_max = SST_STEREO, |
| 73 .rates = SNDRV_PCM_RATE_48000, |
| 74 .formats = SNDRV_PCM_FMTBIT_S24_LE, |
| 75 }, |
| 76 .capture = { |
| 77 .channels_min = 1, |
| 78 .channels_max = 5, |
| 79 .rates = SNDRV_PCM_RATE_48000, |
| 80 .formats = SNDRV_PCM_FMTBIT_S24_LE, |
| 81 }, |
| 82 }, |
| 83 { |
| 84 .name = "Speaker-cpu-dai", |
| 85 .id = 1, |
| 86 .playback = { |
| 87 .channels_min = SST_MONO, |
| 88 .channels_max = SST_STEREO, |
| 89 .rates = SNDRV_PCM_RATE_48000, |
| 90 .formats = SNDRV_PCM_FMTBIT_S24_LE, |
| 91 }, |
| 92 }, |
| 93 { |
| 94 .name = "Vibra1-cpu-dai", |
| 95 .id = 2, |
| 96 .playback = { |
| 97 .channels_min = SST_MONO, |
| 98 .channels_max = SST_MONO, |
| 99 .rates = SNDRV_PCM_RATE_48000, |
| 100 .formats = SNDRV_PCM_FMTBIT_S24_LE, |
| 101 }, |
| 102 }, |
| 103 { |
| 104 .name = "Vibra2-cpu-dai", |
| 105 .id = 3, |
| 106 .playback = { |
| 107 .channels_min = SST_MONO, |
| 108 .channels_max = SST_STEREO, |
| 109 .rates = SNDRV_PCM_RATE_48000, |
| 110 .formats = SNDRV_PCM_FMTBIT_S24_LE, |
| 111 }, |
| 112 }, |
| 113 }; |
| 114 |
| 115 /* helper functions */ |
| 116 static inline void sst_set_stream_status(struct sst_runtime_stream *stream, |
| 117 int state) |
| 118 { |
| 119 spin_lock(&stream->status_lock); |
| 120 stream->stream_status = state; |
| 121 spin_unlock(&stream->status_lock); |
| 122 } |
| 123 |
| 124 static inline int sst_get_stream_status(struct sst_runtime_stream *stream) |
| 125 { |
| 126 int state; |
| 127 |
| 128 spin_lock(&stream->status_lock); |
| 129 state = stream->stream_status; |
| 130 spin_unlock(&stream->status_lock); |
| 131 return state; |
| 132 } |
| 133 |
| 134 static void sst_fill_pcm_params(struct snd_pcm_substream *substream, |
| 135 struct snd_sst_stream_params *param) |
| 136 { |
| 137 |
| 138 param->uc.pcm_params.codec = SST_CODEC_TYPE_PCM; |
| 139 param->uc.pcm_params.num_chan = (u8) substream->runtime->channels; |
| 140 param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits; |
| 141 param->uc.pcm_params.reserved = 0; |
| 142 param->uc.pcm_params.sfreq = substream->runtime->rate; |
| 143 param->uc.pcm_params.ring_buffer_size = |
| 144 snd_pcm_lib_buffer_bytes(substream); |
| 145 param->uc.pcm_params.period_count = substream->runtime->period_size; |
| 146 param->uc.pcm_params.ring_buffer_addr = |
| 147 virt_to_phys(substream->dma_buffer.area); |
| 148 pr_debug("period_cnt = %d\n", param->uc.pcm_params.period_count); |
| 149 pr_debug("sfreq= %d, wd_sz = %d\n", |
| 150 param->uc.pcm_params.sfreq, param->uc.pcm_params.pcm_wd_sz); |
| 151 } |
| 152 |
| 153 static int sst_platform_alloc_stream(struct snd_pcm_substream *substream) |
| 154 { |
| 155 struct sst_runtime_stream *stream = |
| 156 substream->runtime->private_data; |
| 157 struct snd_sst_stream_params param = {{{0,},},}; |
| 158 struct snd_sst_params str_params = {0}; |
| 159 int ret_val; |
| 160 |
| 161 /* set codec params and inform SST driver the same */ |
| 162 sst_fill_pcm_params(substream, ¶m); |
| 163 substream->runtime->dma_area = substream->dma_buffer.area; |
| 164 str_params.sparams = param; |
| 165 str_params.codec = param.uc.pcm_params.codec; |
| 166 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 167 str_params.ops = STREAM_OPS_PLAYBACK; |
| 168 str_params.device_type = substream->pcm->device + 1; |
| 169 pr_debug("Playbck stream,Device %d\n", |
| 170 substream->pcm->device); |
| 171 } else { |
| 172 str_params.ops = STREAM_OPS_CAPTURE; |
| 173 str_params.device_type = SND_SST_DEVICE_CAPTURE; |
| 174 pr_debug("Capture stream,Device %d\n", |
| 175 substream->pcm->device); |
| 176 } |
| 177 ret_val = stream->sstdrv_ops->pcm_control->open(&str_params); |
| 178 pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val); |
| 179 if (ret_val < 0) |
| 180 return ret_val; |
| 181 |
| 182 stream->stream_info.str_id = ret_val; |
| 183 pr_debug("str id : %d\n", stream->stream_info.str_id); |
| 184 return ret_val; |
| 185 } |
| 186 |
| 187 static void sst_period_elapsed(void *mad_substream) |
| 188 { |
| 189 struct snd_pcm_substream *substream = mad_substream; |
| 190 struct sst_runtime_stream *stream; |
| 191 int status; |
| 192 |
| 193 if (!substream || !substream->runtime) |
| 194 return; |
| 195 stream = substream->runtime->private_data; |
| 196 if (!stream) |
| 197 return; |
| 198 status = sst_get_stream_status(stream); |
| 199 if (status != SST_PLATFORM_RUNNING) |
| 200 return; |
| 201 snd_pcm_period_elapsed(substream); |
| 202 } |
| 203 |
| 204 static int sst_platform_init_stream(struct snd_pcm_substream *substream) |
| 205 { |
| 206 struct sst_runtime_stream *stream = |
| 207 substream->runtime->private_data; |
| 208 int ret_val; |
| 209 |
| 210 pr_debug("setting buffer ptr param\n"); |
| 211 sst_set_stream_status(stream, SST_PLATFORM_INIT); |
| 212 stream->stream_info.period_elapsed = sst_period_elapsed; |
| 213 stream->stream_info.mad_substream = substream; |
| 214 stream->stream_info.buffer_ptr = 0; |
| 215 stream->stream_info.sfreq = substream->runtime->rate; |
| 216 ret_val = stream->sstdrv_ops->pcm_control->device_control( |
| 217 SST_SND_STREAM_INIT, &stream->stream_info); |
| 218 if (ret_val) |
| 219 pr_err("control_set ret error %d\n", ret_val); |
| 220 return ret_val; |
| 221 |
| 222 } |
| 223 /* end -- helper functions */ |
| 224 |
| 225 static int sst_platform_open(struct snd_pcm_substream *substream) |
| 226 { |
| 227 struct snd_pcm_runtime *runtime; |
| 228 struct sst_runtime_stream *stream; |
| 229 int ret_val = 0; |
| 230 |
| 231 pr_debug("sst_platform_open called\n"); |
| 232 runtime = substream->runtime; |
| 233 runtime->hw = sst_platform_pcm_hw; |
| 234 stream = kzalloc(sizeof(*stream), GFP_KERNEL); |
| 235 if (!stream) |
| 236 return -ENOMEM; |
| 237 spin_lock_init(&stream->status_lock); |
| 238 stream->stream_info.str_id = 0; |
| 239 sst_set_stream_status(stream, SST_PLATFORM_INIT); |
| 240 stream->stream_info.mad_substream = substream; |
| 241 /* allocate memory for SST API set */ |
| 242 stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops), |
| 243 GFP_KERNEL); |
| 244 if (!stream->sstdrv_ops) { |
| 245 pr_err("sst: mem allocation for ops fail\n"); |
| 246 kfree(stream); |
| 247 return -ENOMEM; |
| 248 } |
| 249 stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID; |
| 250 /* registering with SST driver to get access to SST APIs to use */ |
| 251 ret_val = register_sst_card(stream->sstdrv_ops); |
| 252 if (ret_val) { |
| 253 pr_err("sst: sst card registration failed\n"); |
| 254 return ret_val; |
| 255 } |
| 256 runtime->private_data = stream; |
| 257 return snd_pcm_hw_constraint_integer(runtime, |
| 258 SNDRV_PCM_HW_PARAM_PERIODS); |
| 259 } |
| 260 |
| 261 static int sst_platform_close(struct snd_pcm_substream *substream) |
| 262 { |
| 263 struct sst_runtime_stream *stream; |
| 264 int ret_val = 0, str_id; |
| 265 |
| 266 pr_debug("sst_platform_close called\n"); |
| 267 stream = substream->runtime->private_data; |
| 268 str_id = stream->stream_info.str_id; |
| 269 if (str_id) |
| 270 ret_val = stream->sstdrv_ops->pcm_control->close(str_id); |
| 271 kfree(stream->sstdrv_ops); |
| 272 kfree(stream); |
| 273 return ret_val; |
| 274 } |
| 275 |
| 276 static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream) |
| 277 { |
| 278 struct sst_runtime_stream *stream; |
| 279 int ret_val = 0, str_id; |
| 280 |
| 281 pr_debug("sst_platform_pcm_prepare called\n"); |
| 282 stream = substream->runtime->private_data; |
| 283 str_id = stream->stream_info.str_id; |
| 284 if (stream->stream_info.str_id) { |
| 285 ret_val = stream->sstdrv_ops->pcm_control->device_control( |
| 286 SST_SND_DROP, &str_id); |
| 287 return ret_val; |
| 288 } |
| 289 |
| 290 ret_val = sst_platform_alloc_stream(substream); |
| 291 if (ret_val < 0) |
| 292 return ret_val; |
| 293 snprintf(substream->pcm->id, sizeof(substream->pcm->id), |
| 294 "%d", stream->stream_info.str_id); |
| 295 |
| 296 ret_val = sst_platform_init_stream(substream); |
| 297 if (ret_val) |
| 298 return ret_val; |
| 299 substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER; |
| 300 return ret_val; |
| 301 } |
| 302 |
| 303 static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream, |
| 304 int cmd) |
| 305 { |
| 306 int ret_val = 0, str_id; |
| 307 struct sst_runtime_stream *stream; |
| 308 int str_cmd, status; |
| 309 |
| 310 pr_debug("sst_platform_pcm_trigger called\n"); |
| 311 stream = substream->runtime->private_data; |
| 312 str_id = stream->stream_info.str_id; |
| 313 switch (cmd) { |
| 314 case SNDRV_PCM_TRIGGER_START: |
| 315 pr_debug("sst: Trigger Start\n"); |
| 316 str_cmd = SST_SND_START; |
| 317 status = SST_PLATFORM_RUNNING; |
| 318 stream->stream_info.mad_substream = substream; |
| 319 break; |
| 320 case SNDRV_PCM_TRIGGER_STOP: |
| 321 pr_debug("sst: in stop\n"); |
| 322 str_cmd = SST_SND_DROP; |
| 323 status = SST_PLATFORM_DROPPED; |
| 324 break; |
| 325 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| 326 pr_debug("sst: in pause\n"); |
| 327 str_cmd = SST_SND_PAUSE; |
| 328 status = SST_PLATFORM_PAUSED; |
| 329 break; |
| 330 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| 331 pr_debug("sst: in pause release\n"); |
| 332 str_cmd = SST_SND_RESUME; |
| 333 status = SST_PLATFORM_RUNNING; |
| 334 break; |
| 335 default: |
| 336 return -EINVAL; |
| 337 } |
| 338 ret_val = stream->sstdrv_ops->pcm_control->device_control(str_cmd, |
| 339 &str_id); |
| 340 if (!ret_val) |
| 341 sst_set_stream_status(stream, status); |
| 342 |
| 343 return ret_val; |
| 344 } |
| 345 |
| 346 |
| 347 static snd_pcm_uframes_t sst_platform_pcm_pointer |
| 348 (struct snd_pcm_substream *substream) |
| 349 { |
| 350 struct sst_runtime_stream *stream; |
| 351 int ret_val, status; |
| 352 struct pcm_stream_info *str_info; |
| 353 |
| 354 stream = substream->runtime->private_data; |
| 355 status = sst_get_stream_status(stream); |
| 356 if (status == SST_PLATFORM_INIT) |
| 357 return 0; |
| 358 str_info = &stream->stream_info; |
| 359 ret_val = stream->sstdrv_ops->pcm_control->device_control( |
| 360 SST_SND_BUFFER_POINTER, str_info); |
| 361 if (ret_val) { |
| 362 pr_err("sst: error code = %d\n", ret_val); |
| 363 return ret_val; |
| 364 } |
| 365 return stream->stream_info.buffer_ptr; |
| 366 } |
| 367 |
| 368 static int sst_platform_pcm_hw_params(struct snd_pcm_substream *substream, |
| 369 struct snd_pcm_hw_params *params) |
| 370 { |
| 371 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); |
| 372 memset(substream->runtime->dma_area, 0, params_buffer_bytes(params)); |
| 373 |
| 374 return 0; |
| 375 } |
| 376 |
| 377 static struct snd_pcm_ops sst_platform_ops = { |
| 378 .open = sst_platform_open, |
| 379 .close = sst_platform_close, |
| 380 .ioctl = snd_pcm_lib_ioctl, |
| 381 .prepare = sst_platform_pcm_prepare, |
| 382 .trigger = sst_platform_pcm_trigger, |
| 383 .pointer = sst_platform_pcm_pointer, |
| 384 .hw_params = sst_platform_pcm_hw_params, |
| 385 }; |
| 386 |
| 387 static void sst_pcm_free(struct snd_pcm *pcm) |
| 388 { |
| 389 pr_debug("sst_pcm_free called\n"); |
| 390 snd_pcm_lib_preallocate_free_for_all(pcm); |
| 391 } |
| 392 |
| 393 int sst_pcm_new(struct snd_card *card, struct snd_soc_dai *dai, |
| 394 struct snd_pcm *pcm) |
| 395 { |
| 396 int retval = 0; |
| 397 |
| 398 pr_debug("sst_pcm_new called\n"); |
| 399 if (dai->driver->playback.channels_min || |
| 400 dai->driver->capture.channels_min) { |
| 401 retval = snd_pcm_lib_preallocate_pages_for_all(pcm, |
| 402 SNDRV_DMA_TYPE_CONTINUOUS, |
| 403 snd_dma_continuous_data(GFP_KERNEL), |
| 404 SST_MIN_BUFFER, SST_MAX_BUFFER); |
| 405 if (retval) { |
| 406 pr_err("dma buffer allocationf fail\n"); |
| 407 return retval; |
| 408 } |
| 409 } |
| 410 return retval; |
| 411 } |
| 412 struct snd_soc_platform_driver sst_soc_platform_drv = { |
| 413 .ops = &sst_platform_ops, |
| 414 .pcm_new = sst_pcm_new, |
| 415 .pcm_free = sst_pcm_free, |
| 416 }; |
| 417 |
| 418 static int sst_platform_probe(struct platform_device *pdev) |
| 419 { |
| 420 int ret; |
| 421 |
| 422 pr_debug("sst_platform_probe called\n"); |
| 423 ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv); |
| 424 if (ret) { |
| 425 pr_err("registering soc platform failed\n"); |
| 426 return ret; |
| 427 } |
| 428 |
| 429 ret = snd_soc_register_dais(&pdev->dev, |
| 430 sst_platform_dai, ARRAY_SIZE(sst_platform_dai)); |
| 431 if (ret) { |
| 432 pr_err("registering cpu dais failed\n"); |
| 433 snd_soc_unregister_platform(&pdev->dev); |
| 434 } |
| 435 return ret; |
| 436 } |
| 437 |
| 438 static int sst_platform_remove(struct platform_device *pdev) |
| 439 { |
| 440 |
| 441 snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(sst_platform_dai)); |
| 442 snd_soc_unregister_platform(&pdev->dev); |
| 443 pr_debug("sst_platform_remove sucess\n"); |
| 444 return 0; |
| 445 } |
| 446 |
| 447 static struct platform_driver sst_platform_driver = { |
| 448 .driver = { |
| 449 .name = "sst-platform", |
| 450 .owner = THIS_MODULE, |
| 451 }, |
| 452 .probe = sst_platform_probe, |
| 453 .remove = sst_platform_remove, |
| 454 }; |
| 455 |
| 456 static int __init sst_soc_platform_init(void) |
| 457 { |
| 458 pr_debug("sst_soc_platform_init called\n"); |
| 459 return platform_driver_register(&sst_platform_driver); |
| 460 } |
| 461 module_init(sst_soc_platform_init); |
| 462 |
| 463 static void __exit sst_soc_platform_exit(void) |
| 464 { |
| 465 platform_driver_unregister(&sst_platform_driver); |
| 466 pr_debug("sst_soc_platform_exit sucess\n"); |
| 467 } |
| 468 module_exit(sst_soc_platform_exit); |
| 469 |
| 470 MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver"); |
| 471 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>"); |
| 472 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>"); |
| 473 MODULE_LICENSE("GPL v2"); |
| 474 MODULE_ALIAS("platform:sst-platform"); |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 6577007:
CHROMIUM: ASoC: Import entire upstream ASoC tree (Closed)
