| 1 | /* |
| 2 | * sst_drv_interface.c - Intel SST Driver for audio engine |
| 3 | * |
| 4 | * Copyright (C) 2008-14 Intel Corp |
| 5 | * Authors: Vinod Koul <vinod.koul@intel.com> |
| 6 | * Harsha Priya <priya.harsha@intel.com> |
| 7 | * Dharageswari R <dharageswari.r@intel.com) |
| 8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; version 2 of the License. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 20 | */ |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/pci.h> |
| 23 | #include <linux/fs.h> |
| 24 | #include <linux/firmware.h> |
| 25 | #include <linux/pm_runtime.h> |
| 26 | #include <linux/pm_qos.h> |
| 27 | #include <linux/math64.h> |
| 28 | #include <sound/core.h> |
| 29 | #include <sound/pcm.h> |
| 30 | #include <sound/soc.h> |
| 31 | #include <sound/compress_driver.h> |
| 32 | #include <asm/platform_sst_audio.h> |
| 33 | #include "../sst-mfld-platform.h" |
| 34 | #include "sst.h" |
| 35 | #include "../../common/sst-dsp.h" |
| 36 | |
| 37 | |
| 38 | |
| 39 | #define NUM_CODEC 2 |
| 40 | #define MIN_FRAGMENT 2 |
| 41 | #define MAX_FRAGMENT 4 |
| 42 | #define MIN_FRAGMENT_SIZE (50 * 1024) |
| 43 | #define MAX_FRAGMENT_SIZE (1024 * 1024) |
| 44 | #define SST_GET_BYTES_PER_SAMPLE(pcm_wd_sz) (((pcm_wd_sz + 15) >> 4) << 1) |
| 45 | #ifdef CONFIG_PM |
| 46 | #define GET_USAGE_COUNT(dev) (atomic_read(&dev->power.usage_count)) |
| 47 | #else |
| 48 | #define GET_USAGE_COUNT(dev) 1 |
| 49 | #endif |
| 50 | |
| 51 | int free_stream_context(struct intel_sst_drv *ctx, unsigned int str_id) |
| 52 | { |
| 53 | struct stream_info *stream; |
| 54 | int ret = 0; |
| 55 | |
| 56 | stream = get_stream_info(ctx, str_id); |
| 57 | if (stream) { |
| 58 | /* str_id is valid, so stream is alloacted */ |
| 59 | ret = sst_free_stream(ctx, str_id); |
| 60 | if (ret) |
| 61 | sst_clean_stream(&ctx->streams[str_id]); |
| 62 | return ret; |
| 63 | } else { |
| 64 | dev_err(ctx->dev, "we tried to free stream context %d which was freed!!!\n", str_id); |
| 65 | } |
| 66 | return ret; |
| 67 | } |
| 68 | |
| 69 | int sst_get_stream_allocated(struct intel_sst_drv *ctx, |
| 70 | struct snd_sst_params *str_param, |
| 71 | struct snd_sst_lib_download **lib_dnld) |
| 72 | { |
| 73 | int retval; |
| 74 | |
| 75 | retval = ctx->ops->alloc_stream(ctx, str_param); |
| 76 | if (retval > 0) |
| 77 | dev_dbg(ctx->dev, "Stream allocated %d\n", retval); |
| 78 | return retval; |
| 79 | |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * sst_get_sfreq - this function returns the frequency of the stream |
| 84 | * |
| 85 | * @str_param : stream params |
| 86 | */ |
| 87 | int sst_get_sfreq(struct snd_sst_params *str_param) |
| 88 | { |
| 89 | switch (str_param->codec) { |
| 90 | case SST_CODEC_TYPE_PCM: |
| 91 | return str_param->sparams.uc.pcm_params.sfreq; |
| 92 | case SST_CODEC_TYPE_AAC: |
| 93 | return str_param->sparams.uc.aac_params.externalsr; |
| 94 | case SST_CODEC_TYPE_MP3: |
| 95 | return 0; |
| 96 | default: |
| 97 | return -EINVAL; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | /* |
| 102 | * sst_get_num_channel - get number of channels for the stream |
| 103 | * |
| 104 | * @str_param : stream params |
| 105 | */ |
| 106 | int sst_get_num_channel(struct snd_sst_params *str_param) |
| 107 | { |
| 108 | switch (str_param->codec) { |
| 109 | case SST_CODEC_TYPE_PCM: |
| 110 | return str_param->sparams.uc.pcm_params.num_chan; |
| 111 | case SST_CODEC_TYPE_MP3: |
| 112 | return str_param->sparams.uc.mp3_params.num_chan; |
| 113 | case SST_CODEC_TYPE_AAC: |
| 114 | return str_param->sparams.uc.aac_params.num_chan; |
| 115 | default: |
| 116 | return -EINVAL; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /* |
| 121 | * sst_get_stream - this function prepares for stream allocation |
| 122 | * |
| 123 | * @str_param : stream param |
| 124 | */ |
| 125 | int sst_get_stream(struct intel_sst_drv *ctx, |
| 126 | struct snd_sst_params *str_param) |
| 127 | { |
| 128 | int retval; |
| 129 | struct stream_info *str_info; |
| 130 | |
| 131 | /* stream is not allocated, we are allocating */ |
| 132 | retval = ctx->ops->alloc_stream(ctx, str_param); |
| 133 | if (retval <= 0) { |
| 134 | return -EIO; |
| 135 | } |
| 136 | /* store sampling freq */ |
| 137 | str_info = &ctx->streams[retval]; |
| 138 | str_info->sfreq = sst_get_sfreq(str_param); |
| 139 | |
| 140 | return retval; |
| 141 | } |
| 142 | |
| 143 | static int sst_power_control(struct device *dev, bool state) |
| 144 | { |
| 145 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 146 | int ret = 0; |
| 147 | int usage_count = 0; |
| 148 | |
| 149 | if (state == true) { |
| 150 | ret = pm_runtime_get_sync(dev); |
| 151 | usage_count = GET_USAGE_COUNT(dev); |
| 152 | dev_dbg(ctx->dev, "Enable: pm usage count: %d\n", usage_count); |
| 153 | if (ret < 0) { |
| 154 | dev_err(ctx->dev, "Runtime get failed with err: %d\n", ret); |
| 155 | return ret; |
| 156 | } |
| 157 | if ((ctx->sst_state == SST_RESET) && (usage_count == 1)) { |
| 158 | ret = sst_load_fw(ctx); |
| 159 | if (ret) { |
| 160 | dev_err(dev, "FW download fail %d\n", ret); |
| 161 | sst_set_fw_state_locked(ctx, SST_RESET); |
| 162 | ret = sst_pm_runtime_put(ctx); |
| 163 | } |
| 164 | } |
| 165 | } else { |
| 166 | usage_count = GET_USAGE_COUNT(dev); |
| 167 | dev_dbg(ctx->dev, "Disable: pm usage count: %d\n", usage_count); |
| 168 | return sst_pm_runtime_put(ctx); |
| 169 | } |
| 170 | return ret; |
| 171 | } |
| 172 | |
| 173 | /* |
| 174 | * sst_open_pcm_stream - Open PCM interface |
| 175 | * |
| 176 | * @str_param: parameters of pcm stream |
| 177 | * |
| 178 | * This function is called by MID sound card driver to open |
| 179 | * a new pcm interface |
| 180 | */ |
| 181 | static int sst_open_pcm_stream(struct device *dev, |
| 182 | struct snd_sst_params *str_param) |
| 183 | { |
| 184 | int retval; |
| 185 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 186 | |
| 187 | if (!str_param) |
| 188 | return -EINVAL; |
| 189 | |
| 190 | retval = sst_get_stream(ctx, str_param); |
| 191 | if (retval > 0) |
| 192 | ctx->stream_cnt++; |
| 193 | else |
| 194 | dev_err(ctx->dev, "sst_get_stream returned err %d\n", retval); |
| 195 | |
| 196 | return retval; |
| 197 | } |
| 198 | |
| 199 | static int sst_cdev_open(struct device *dev, |
| 200 | struct snd_sst_params *str_params, struct sst_compress_cb *cb) |
| 201 | { |
| 202 | int str_id, retval; |
| 203 | struct stream_info *stream; |
| 204 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 205 | |
| 206 | retval = pm_runtime_get_sync(ctx->dev); |
| 207 | if (retval < 0) |
| 208 | return retval; |
| 209 | |
| 210 | str_id = sst_get_stream(ctx, str_params); |
| 211 | if (str_id > 0) { |
| 212 | dev_dbg(dev, "stream allocated in sst_cdev_open %d\n", str_id); |
| 213 | stream = &ctx->streams[str_id]; |
| 214 | stream->compr_cb = cb->compr_cb; |
| 215 | stream->compr_cb_param = cb->param; |
| 216 | stream->drain_notify = cb->drain_notify; |
| 217 | stream->drain_cb_param = cb->drain_cb_param; |
| 218 | } else { |
| 219 | dev_err(dev, "stream encountered error during alloc %d\n", str_id); |
| 220 | str_id = -EINVAL; |
| 221 | sst_pm_runtime_put(ctx); |
| 222 | } |
| 223 | return str_id; |
| 224 | } |
| 225 | |
| 226 | static int sst_cdev_close(struct device *dev, unsigned int str_id) |
| 227 | { |
| 228 | int retval; |
| 229 | struct stream_info *stream; |
| 230 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 231 | |
| 232 | stream = get_stream_info(ctx, str_id); |
| 233 | if (!stream) { |
| 234 | dev_err(dev, "stream info is NULL for str %d!!!\n", str_id); |
| 235 | return -EINVAL; |
| 236 | } |
| 237 | |
| 238 | if (stream->status == STREAM_RESET) { |
| 239 | dev_dbg(dev, "stream in reset state...\n"); |
| 240 | stream->status = STREAM_UN_INIT; |
| 241 | |
| 242 | retval = 0; |
| 243 | goto put; |
| 244 | } |
| 245 | |
| 246 | retval = sst_free_stream(ctx, str_id); |
| 247 | put: |
| 248 | stream->compr_cb_param = NULL; |
| 249 | stream->compr_cb = NULL; |
| 250 | |
| 251 | if (retval) |
| 252 | dev_err(dev, "free stream returned err %d\n", retval); |
| 253 | |
| 254 | dev_dbg(dev, "End\n"); |
| 255 | return retval; |
| 256 | |
| 257 | } |
| 258 | |
| 259 | static int sst_cdev_ack(struct device *dev, unsigned int str_id, |
| 260 | unsigned long bytes) |
| 261 | { |
| 262 | struct stream_info *stream; |
| 263 | struct snd_sst_tstamp fw_tstamp = {0,}; |
| 264 | int offset; |
| 265 | void __iomem *addr; |
| 266 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 267 | |
| 268 | stream = get_stream_info(ctx, str_id); |
| 269 | if (!stream) |
| 270 | return -EINVAL; |
| 271 | |
| 272 | /* update bytes sent */ |
| 273 | stream->cumm_bytes += bytes; |
| 274 | dev_dbg(dev, "bytes copied %d inc by %ld\n", stream->cumm_bytes, bytes); |
| 275 | |
| 276 | memcpy_fromio(&fw_tstamp, |
| 277 | ((void *)(ctx->mailbox + ctx->tstamp) |
| 278 | +(str_id * sizeof(fw_tstamp))), |
| 279 | sizeof(fw_tstamp)); |
| 280 | |
| 281 | fw_tstamp.bytes_copied = stream->cumm_bytes; |
| 282 | dev_dbg(dev, "bytes sent to fw %llu inc by %ld\n", |
| 283 | fw_tstamp.bytes_copied, bytes); |
| 284 | |
| 285 | addr = ((void *)(ctx->mailbox + ctx->tstamp)) + |
| 286 | (str_id * sizeof(fw_tstamp)); |
| 287 | offset = offsetof(struct snd_sst_tstamp, bytes_copied); |
| 288 | sst_shim_write(addr, offset, fw_tstamp.bytes_copied); |
| 289 | return 0; |
| 290 | } |
| 291 | |
| 292 | static int sst_cdev_set_metadata(struct device *dev, |
| 293 | unsigned int str_id, struct snd_compr_metadata *metadata) |
| 294 | { |
| 295 | int retval = 0; |
| 296 | struct stream_info *str_info; |
| 297 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 298 | |
| 299 | dev_dbg(dev, "set metadata for stream %d\n", str_id); |
| 300 | |
| 301 | str_info = get_stream_info(ctx, str_id); |
| 302 | if (!str_info) |
| 303 | return -EINVAL; |
| 304 | |
| 305 | dev_dbg(dev, "pipe id = %d\n", str_info->pipe_id); |
| 306 | retval = sst_prepare_and_post_msg(ctx, str_info->task_id, IPC_CMD, |
| 307 | IPC_IA_SET_STREAM_PARAMS_MRFLD, str_info->pipe_id, |
| 308 | sizeof(*metadata), metadata, NULL, |
| 309 | true, true, true, false); |
| 310 | |
| 311 | return retval; |
| 312 | } |
| 313 | |
| 314 | static int sst_cdev_stream_pause(struct device *dev, unsigned int str_id) |
| 315 | { |
| 316 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 317 | |
| 318 | return sst_pause_stream(ctx, str_id); |
| 319 | } |
| 320 | |
| 321 | static int sst_cdev_stream_pause_release(struct device *dev, |
| 322 | unsigned int str_id) |
| 323 | { |
| 324 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 325 | |
| 326 | return sst_resume_stream(ctx, str_id); |
| 327 | } |
| 328 | |
| 329 | static int sst_cdev_stream_start(struct device *dev, unsigned int str_id) |
| 330 | { |
| 331 | struct stream_info *str_info; |
| 332 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 333 | |
| 334 | str_info = get_stream_info(ctx, str_id); |
| 335 | if (!str_info) |
| 336 | return -EINVAL; |
| 337 | str_info->prev = str_info->status; |
| 338 | str_info->status = STREAM_RUNNING; |
| 339 | return sst_start_stream(ctx, str_id); |
| 340 | } |
| 341 | |
| 342 | static int sst_cdev_stream_drop(struct device *dev, unsigned int str_id) |
| 343 | { |
| 344 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 345 | |
| 346 | return sst_drop_stream(ctx, str_id); |
| 347 | } |
| 348 | |
| 349 | static int sst_cdev_stream_drain(struct device *dev, unsigned int str_id) |
| 350 | { |
| 351 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 352 | |
| 353 | return sst_drain_stream(ctx, str_id, false); |
| 354 | } |
| 355 | |
| 356 | static int sst_cdev_stream_partial_drain(struct device *dev, |
| 357 | unsigned int str_id) |
| 358 | { |
| 359 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 360 | |
| 361 | return sst_drain_stream(ctx, str_id, true); |
| 362 | } |
| 363 | |
| 364 | static int sst_cdev_tstamp(struct device *dev, unsigned int str_id, |
| 365 | struct snd_compr_tstamp *tstamp) |
| 366 | { |
| 367 | struct snd_sst_tstamp fw_tstamp = {0,}; |
| 368 | struct stream_info *stream; |
| 369 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 370 | |
| 371 | memcpy_fromio(&fw_tstamp, |
| 372 | ((void *)(ctx->mailbox + ctx->tstamp) |
| 373 | +(str_id * sizeof(fw_tstamp))), |
| 374 | sizeof(fw_tstamp)); |
| 375 | |
| 376 | stream = get_stream_info(ctx, str_id); |
| 377 | if (!stream) |
| 378 | return -EINVAL; |
| 379 | dev_dbg(dev, "rb_counter %llu in bytes\n", fw_tstamp.ring_buffer_counter); |
| 380 | |
| 381 | tstamp->copied_total = fw_tstamp.ring_buffer_counter; |
| 382 | tstamp->pcm_frames = fw_tstamp.frames_decoded; |
| 383 | tstamp->pcm_io_frames = div_u64(fw_tstamp.hardware_counter, |
| 384 | (u64)stream->num_ch * SST_GET_BYTES_PER_SAMPLE(24)); |
| 385 | tstamp->sampling_rate = fw_tstamp.sampling_frequency; |
| 386 | |
| 387 | dev_dbg(dev, "PCM = %u\n", tstamp->pcm_io_frames); |
| 388 | dev_dbg(dev, "Ptr Query on strid = %d copied_total %d, decodec %d\n", |
| 389 | str_id, tstamp->copied_total, tstamp->pcm_frames); |
| 390 | dev_dbg(dev, "rendered %d\n", tstamp->pcm_io_frames); |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static int sst_cdev_caps(struct snd_compr_caps *caps) |
| 396 | { |
| 397 | caps->num_codecs = NUM_CODEC; |
| 398 | caps->min_fragment_size = MIN_FRAGMENT_SIZE; /* 50KB */ |
| 399 | caps->max_fragment_size = MAX_FRAGMENT_SIZE; /* 1024KB */ |
| 400 | caps->min_fragments = MIN_FRAGMENT; |
| 401 | caps->max_fragments = MAX_FRAGMENT; |
| 402 | caps->codecs[0] = SND_AUDIOCODEC_MP3; |
| 403 | caps->codecs[1] = SND_AUDIOCODEC_AAC; |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | static struct snd_compr_codec_caps caps_mp3 = { |
| 408 | .num_descriptors = 1, |
| 409 | .descriptor[0].max_ch = 2, |
| 410 | .descriptor[0].sample_rates[0] = 48000, |
| 411 | .descriptor[0].sample_rates[1] = 44100, |
| 412 | .descriptor[0].sample_rates[2] = 32000, |
| 413 | .descriptor[0].sample_rates[3] = 16000, |
| 414 | .descriptor[0].sample_rates[4] = 8000, |
| 415 | .descriptor[0].num_sample_rates = 5, |
| 416 | .descriptor[0].bit_rate[0] = 320, |
| 417 | .descriptor[0].bit_rate[1] = 192, |
| 418 | .descriptor[0].num_bitrates = 2, |
| 419 | .descriptor[0].profiles = 0, |
| 420 | .descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO, |
| 421 | .descriptor[0].formats = 0, |
| 422 | }; |
| 423 | |
| 424 | static struct snd_compr_codec_caps caps_aac = { |
| 425 | .num_descriptors = 2, |
| 426 | .descriptor[1].max_ch = 2, |
| 427 | .descriptor[0].sample_rates[0] = 48000, |
| 428 | .descriptor[0].sample_rates[1] = 44100, |
| 429 | .descriptor[0].sample_rates[2] = 32000, |
| 430 | .descriptor[0].sample_rates[3] = 16000, |
| 431 | .descriptor[0].sample_rates[4] = 8000, |
| 432 | .descriptor[0].num_sample_rates = 5, |
| 433 | .descriptor[1].bit_rate[0] = 320, |
| 434 | .descriptor[1].bit_rate[1] = 192, |
| 435 | .descriptor[1].num_bitrates = 2, |
| 436 | .descriptor[1].profiles = 0, |
| 437 | .descriptor[1].modes = 0, |
| 438 | .descriptor[1].formats = |
| 439 | (SND_AUDIOSTREAMFORMAT_MP4ADTS | |
| 440 | SND_AUDIOSTREAMFORMAT_RAW), |
| 441 | }; |
| 442 | |
| 443 | static int sst_cdev_codec_caps(struct snd_compr_codec_caps *codec) |
| 444 | { |
| 445 | if (codec->codec == SND_AUDIOCODEC_MP3) |
| 446 | *codec = caps_mp3; |
| 447 | else if (codec->codec == SND_AUDIOCODEC_AAC) |
| 448 | *codec = caps_aac; |
| 449 | else |
| 450 | return -EINVAL; |
| 451 | |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | void sst_cdev_fragment_elapsed(struct intel_sst_drv *ctx, int str_id) |
| 456 | { |
| 457 | struct stream_info *stream; |
| 458 | |
| 459 | dev_dbg(ctx->dev, "fragment elapsed from firmware for str_id %d\n", |
| 460 | str_id); |
| 461 | stream = &ctx->streams[str_id]; |
| 462 | if (stream->compr_cb) |
| 463 | stream->compr_cb(stream->compr_cb_param); |
| 464 | } |
| 465 | |
| 466 | /* |
| 467 | * sst_close_pcm_stream - Close PCM interface |
| 468 | * |
| 469 | * @str_id: stream id to be closed |
| 470 | * |
| 471 | * This function is called by MID sound card driver to close |
| 472 | * an existing pcm interface |
| 473 | */ |
| 474 | static int sst_close_pcm_stream(struct device *dev, unsigned int str_id) |
| 475 | { |
| 476 | struct stream_info *stream; |
| 477 | int retval = 0; |
| 478 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 479 | |
| 480 | stream = get_stream_info(ctx, str_id); |
| 481 | if (!stream) { |
| 482 | dev_err(ctx->dev, "stream info is NULL for str %d!!!\n", str_id); |
| 483 | return -EINVAL; |
| 484 | } |
| 485 | |
| 486 | if (stream->status == STREAM_RESET) { |
| 487 | /* silently fail here as we have cleaned the stream earlier */ |
| 488 | dev_dbg(ctx->dev, "stream in reset state...\n"); |
| 489 | |
| 490 | retval = 0; |
| 491 | goto put; |
| 492 | } |
| 493 | |
| 494 | retval = free_stream_context(ctx, str_id); |
| 495 | put: |
| 496 | stream->pcm_substream = NULL; |
| 497 | stream->status = STREAM_UN_INIT; |
| 498 | stream->period_elapsed = NULL; |
| 499 | ctx->stream_cnt--; |
| 500 | |
| 501 | if (retval) |
| 502 | dev_err(ctx->dev, "free stream returned err %d\n", retval); |
| 503 | |
| 504 | dev_dbg(ctx->dev, "Exit\n"); |
| 505 | return 0; |
| 506 | } |
| 507 | |
| 508 | static inline int sst_calc_tstamp(struct intel_sst_drv *ctx, |
| 509 | struct pcm_stream_info *info, |
| 510 | struct snd_pcm_substream *substream, |
| 511 | struct snd_sst_tstamp *fw_tstamp) |
| 512 | { |
| 513 | size_t delay_bytes, delay_frames; |
| 514 | size_t buffer_sz; |
| 515 | u32 pointer_bytes, pointer_samples; |
| 516 | |
| 517 | dev_dbg(ctx->dev, "mrfld ring_buffer_counter %llu in bytes\n", |
| 518 | fw_tstamp->ring_buffer_counter); |
| 519 | dev_dbg(ctx->dev, "mrfld hardware_counter %llu in bytes\n", |
| 520 | fw_tstamp->hardware_counter); |
| 521 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 522 | delay_bytes = (size_t) (fw_tstamp->ring_buffer_counter - |
| 523 | fw_tstamp->hardware_counter); |
| 524 | else |
| 525 | delay_bytes = (size_t) (fw_tstamp->hardware_counter - |
| 526 | fw_tstamp->ring_buffer_counter); |
| 527 | delay_frames = bytes_to_frames(substream->runtime, delay_bytes); |
| 528 | buffer_sz = snd_pcm_lib_buffer_bytes(substream); |
| 529 | div_u64_rem(fw_tstamp->ring_buffer_counter, buffer_sz, &pointer_bytes); |
| 530 | pointer_samples = bytes_to_samples(substream->runtime, pointer_bytes); |
| 531 | |
| 532 | dev_dbg(ctx->dev, "pcm delay %zu in bytes\n", delay_bytes); |
| 533 | |
| 534 | info->buffer_ptr = pointer_samples / substream->runtime->channels; |
| 535 | |
| 536 | info->pcm_delay = delay_frames; |
| 537 | dev_dbg(ctx->dev, "buffer ptr %llu pcm_delay rep: %llu\n", |
| 538 | info->buffer_ptr, info->pcm_delay); |
| 539 | return 0; |
| 540 | } |
| 541 | |
| 542 | static int sst_read_timestamp(struct device *dev, struct pcm_stream_info *info) |
| 543 | { |
| 544 | struct stream_info *stream; |
| 545 | struct snd_pcm_substream *substream; |
| 546 | struct snd_sst_tstamp fw_tstamp; |
| 547 | unsigned int str_id; |
| 548 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 549 | |
| 550 | str_id = info->str_id; |
| 551 | stream = get_stream_info(ctx, str_id); |
| 552 | if (!stream) |
| 553 | return -EINVAL; |
| 554 | |
| 555 | if (!stream->pcm_substream) |
| 556 | return -EINVAL; |
| 557 | substream = stream->pcm_substream; |
| 558 | |
| 559 | memcpy_fromio(&fw_tstamp, |
| 560 | ((void *)(ctx->mailbox + ctx->tstamp) |
| 561 | + (str_id * sizeof(fw_tstamp))), |
| 562 | sizeof(fw_tstamp)); |
| 563 | return sst_calc_tstamp(ctx, info, substream, &fw_tstamp); |
| 564 | } |
| 565 | |
| 566 | static int sst_stream_start(struct device *dev, int str_id) |
| 567 | { |
| 568 | struct stream_info *str_info; |
| 569 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 570 | |
| 571 | if (ctx->sst_state != SST_FW_RUNNING) |
| 572 | return 0; |
| 573 | str_info = get_stream_info(ctx, str_id); |
| 574 | if (!str_info) |
| 575 | return -EINVAL; |
| 576 | str_info->prev = str_info->status; |
| 577 | str_info->status = STREAM_RUNNING; |
| 578 | sst_start_stream(ctx, str_id); |
| 579 | |
| 580 | return 0; |
| 581 | } |
| 582 | |
| 583 | static int sst_stream_drop(struct device *dev, int str_id) |
| 584 | { |
| 585 | struct stream_info *str_info; |
| 586 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 587 | |
| 588 | if (ctx->sst_state != SST_FW_RUNNING) |
| 589 | return 0; |
| 590 | |
| 591 | str_info = get_stream_info(ctx, str_id); |
| 592 | if (!str_info) |
| 593 | return -EINVAL; |
| 594 | str_info->prev = STREAM_UN_INIT; |
| 595 | str_info->status = STREAM_INIT; |
| 596 | return sst_drop_stream(ctx, str_id); |
| 597 | } |
| 598 | |
| 599 | static int sst_stream_pause(struct device *dev, int str_id) |
| 600 | { |
| 601 | struct stream_info *str_info; |
| 602 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 603 | |
| 604 | if (ctx->sst_state != SST_FW_RUNNING) |
| 605 | return 0; |
| 606 | |
| 607 | str_info = get_stream_info(ctx, str_id); |
| 608 | if (!str_info) |
| 609 | return -EINVAL; |
| 610 | |
| 611 | return sst_pause_stream(ctx, str_id); |
| 612 | } |
| 613 | |
| 614 | static int sst_stream_resume(struct device *dev, int str_id) |
| 615 | { |
| 616 | struct stream_info *str_info; |
| 617 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 618 | |
| 619 | if (ctx->sst_state != SST_FW_RUNNING) |
| 620 | return 0; |
| 621 | |
| 622 | str_info = get_stream_info(ctx, str_id); |
| 623 | if (!str_info) |
| 624 | return -EINVAL; |
| 625 | return sst_resume_stream(ctx, str_id); |
| 626 | } |
| 627 | |
| 628 | static int sst_stream_init(struct device *dev, struct pcm_stream_info *str_info) |
| 629 | { |
| 630 | int str_id = 0; |
| 631 | struct stream_info *stream; |
| 632 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 633 | |
| 634 | str_id = str_info->str_id; |
| 635 | |
| 636 | if (ctx->sst_state != SST_FW_RUNNING) |
| 637 | return 0; |
| 638 | |
| 639 | stream = get_stream_info(ctx, str_id); |
| 640 | if (!stream) |
| 641 | return -EINVAL; |
| 642 | |
| 643 | dev_dbg(ctx->dev, "setting the period ptrs\n"); |
| 644 | stream->pcm_substream = str_info->arg; |
| 645 | stream->period_elapsed = str_info->period_elapsed; |
| 646 | stream->sfreq = str_info->sfreq; |
| 647 | stream->prev = stream->status; |
| 648 | stream->status = STREAM_INIT; |
| 649 | dev_dbg(ctx->dev, |
| 650 | "pcm_substream %p, period_elapsed %p, sfreq %d, status %d\n", |
| 651 | stream->pcm_substream, stream->period_elapsed, |
| 652 | stream->sfreq, stream->status); |
| 653 | |
| 654 | return 0; |
| 655 | } |
| 656 | |
| 657 | /* |
| 658 | * sst_set_byte_stream - Set generic params |
| 659 | * |
| 660 | * @cmd: control cmd to be set |
| 661 | * @arg: command argument |
| 662 | * |
| 663 | * This function is called by MID sound card driver to configure |
| 664 | * SST runtime params. |
| 665 | */ |
| 666 | static int sst_send_byte_stream(struct device *dev, |
| 667 | struct snd_sst_bytes_v2 *bytes) |
| 668 | { |
| 669 | int ret_val = 0; |
| 670 | struct intel_sst_drv *ctx = dev_get_drvdata(dev); |
| 671 | |
| 672 | if (NULL == bytes) |
| 673 | return -EINVAL; |
| 674 | ret_val = pm_runtime_get_sync(ctx->dev); |
| 675 | if (ret_val < 0) |
| 676 | return ret_val; |
| 677 | |
| 678 | ret_val = sst_send_byte_stream_mrfld(ctx, bytes); |
| 679 | sst_pm_runtime_put(ctx); |
| 680 | |
| 681 | return ret_val; |
| 682 | } |
| 683 | |
| 684 | static struct sst_ops pcm_ops = { |
| 685 | .open = sst_open_pcm_stream, |
| 686 | .stream_init = sst_stream_init, |
| 687 | .stream_start = sst_stream_start, |
| 688 | .stream_drop = sst_stream_drop, |
| 689 | .stream_pause = sst_stream_pause, |
| 690 | .stream_pause_release = sst_stream_resume, |
| 691 | .stream_read_tstamp = sst_read_timestamp, |
| 692 | .send_byte_stream = sst_send_byte_stream, |
| 693 | .close = sst_close_pcm_stream, |
| 694 | .power = sst_power_control, |
| 695 | }; |
| 696 | |
| 697 | static struct compress_sst_ops compr_ops = { |
| 698 | .open = sst_cdev_open, |
| 699 | .close = sst_cdev_close, |
| 700 | .stream_pause = sst_cdev_stream_pause, |
| 701 | .stream_pause_release = sst_cdev_stream_pause_release, |
| 702 | .stream_start = sst_cdev_stream_start, |
| 703 | .stream_drop = sst_cdev_stream_drop, |
| 704 | .stream_drain = sst_cdev_stream_drain, |
| 705 | .stream_partial_drain = sst_cdev_stream_partial_drain, |
| 706 | .tstamp = sst_cdev_tstamp, |
| 707 | .ack = sst_cdev_ack, |
| 708 | .get_caps = sst_cdev_caps, |
| 709 | .get_codec_caps = sst_cdev_codec_caps, |
| 710 | .set_metadata = sst_cdev_set_metadata, |
| 711 | .power = sst_power_control, |
| 712 | }; |
| 713 | |
| 714 | static struct sst_device sst_dsp_device = { |
| 715 | .name = "Intel(R) SST LPE", |
| 716 | .dev = NULL, |
| 717 | .ops = &pcm_ops, |
| 718 | .compr_ops = &compr_ops, |
| 719 | }; |
| 720 | |
| 721 | /* |
| 722 | * sst_register - function to register DSP |
| 723 | * |
| 724 | * This functions registers DSP with the platform driver |
| 725 | */ |
| 726 | int sst_register(struct device *dev) |
| 727 | { |
| 728 | int ret_val; |
| 729 | |
| 730 | sst_dsp_device.dev = dev; |
| 731 | ret_val = sst_register_dsp(&sst_dsp_device); |
| 732 | if (ret_val) |
| 733 | dev_err(dev, "Unable to register DSP with platform driver\n"); |
| 734 | |
| 735 | return ret_val; |
| 736 | } |
| 737 | |
| 738 | int sst_unregister(struct device *dev) |
| 739 | { |
| 740 | return sst_unregister_dsp(&sst_dsp_device); |
| 741 | } |