1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Authors: Keyon Jie <yang.jie@linux.intel.com> 9 // 10 11 #include <sound/pcm_params.h> 12 #include <sound/hdaudio_ext.h> 13 #include "../sof-priv.h" 14 #include "../sof-audio.h" 15 #include "hda.h" 16 17 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 18 19 struct hda_pipe_params { 20 u8 host_dma_id; 21 u8 link_dma_id; 22 u32 ch; 23 u32 s_freq; 24 u32 s_fmt; 25 u8 linktype; 26 snd_pcm_format_t format; 27 int link_index; 28 int stream; 29 unsigned int host_bps; 30 unsigned int link_bps; 31 }; 32 33 /* 34 * This function checks if the host dma channel corresponding 35 * to the link DMA stream_tag argument is assigned to one 36 * of the FEs connected to the BE DAI. 37 */ 38 static bool hda_check_fes(struct snd_soc_pcm_runtime *rtd, 39 int dir, int stream_tag) 40 { 41 struct snd_pcm_substream *fe_substream; 42 struct hdac_stream *fe_hstream; 43 struct snd_soc_dpcm *dpcm; 44 45 for_each_dpcm_fe(rtd, dir, dpcm) { 46 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, dir); 47 fe_hstream = fe_substream->runtime->private_data; 48 if (fe_hstream->stream_tag == stream_tag) 49 return true; 50 } 51 52 return false; 53 } 54 55 static struct hdac_ext_stream * 56 hda_link_stream_assign(struct hdac_bus *bus, 57 struct snd_pcm_substream *substream) 58 { 59 struct snd_soc_pcm_runtime *rtd = substream->private_data; 60 struct sof_intel_hda_stream *hda_stream; 61 struct hdac_ext_stream *res = NULL; 62 struct hdac_stream *stream = NULL; 63 64 int stream_dir = substream->stream; 65 66 if (!bus->ppcap) { 67 dev_err(bus->dev, "stream type not supported\n"); 68 return NULL; 69 } 70 71 list_for_each_entry(stream, &bus->stream_list, list) { 72 struct hdac_ext_stream *hstream = 73 stream_to_hdac_ext_stream(stream); 74 if (stream->direction != substream->stream) 75 continue; 76 77 hda_stream = hstream_to_sof_hda_stream(hstream); 78 79 /* check if link is available */ 80 if (!hstream->link_locked) { 81 if (stream->opened) { 82 /* 83 * check if the stream tag matches the stream 84 * tag of one of the connected FEs 85 */ 86 if (hda_check_fes(rtd, stream_dir, 87 stream->stream_tag)) { 88 res = hstream; 89 break; 90 } 91 } else { 92 res = hstream; 93 94 /* 95 * This must be a hostless stream. 96 * So reserve the host DMA channel. 97 */ 98 hda_stream->host_reserved = 1; 99 break; 100 } 101 } 102 } 103 104 if (res) { 105 /* 106 * Decouple host and link DMA. The decoupled flag 107 * is updated in snd_hdac_ext_stream_decouple(). 108 */ 109 if (!res->decoupled) 110 snd_hdac_ext_stream_decouple(bus, res, true); 111 spin_lock_irq(&bus->reg_lock); 112 res->link_locked = 1; 113 res->link_substream = substream; 114 spin_unlock_irq(&bus->reg_lock); 115 } 116 117 return res; 118 } 119 120 static int hda_link_dma_params(struct hdac_ext_stream *stream, 121 struct hda_pipe_params *params) 122 { 123 struct hdac_stream *hstream = &stream->hstream; 124 unsigned char stream_tag = hstream->stream_tag; 125 struct hdac_bus *bus = hstream->bus; 126 struct hdac_ext_link *link; 127 unsigned int format_val; 128 129 snd_hdac_ext_stream_decouple(bus, stream, true); 130 snd_hdac_ext_link_stream_reset(stream); 131 132 format_val = snd_hdac_calc_stream_format(params->s_freq, params->ch, 133 params->format, 134 params->link_bps, 0); 135 136 dev_dbg(bus->dev, "format_val=%d, rate=%d, ch=%d, format=%d\n", 137 format_val, params->s_freq, params->ch, params->format); 138 139 snd_hdac_ext_link_stream_setup(stream, format_val); 140 141 if (stream->hstream.direction == SNDRV_PCM_STREAM_PLAYBACK) { 142 list_for_each_entry(link, &bus->hlink_list, list) { 143 if (link->index == params->link_index) 144 snd_hdac_ext_link_set_stream_id(link, 145 stream_tag); 146 } 147 } 148 149 stream->link_prepared = 1; 150 151 return 0; 152 } 153 154 /* Send DAI_CONFIG IPC to the DAI that matches the dai_name and direction */ 155 static int hda_link_config_ipc(struct sof_intel_hda_stream *hda_stream, 156 const char *dai_name, int channel, int dir) 157 { 158 struct sof_ipc_dai_config *config; 159 struct snd_sof_dai *sof_dai; 160 struct sof_ipc_reply reply; 161 int ret = 0; 162 163 list_for_each_entry(sof_dai, &hda_stream->sdev->dai_list, list) { 164 if (!sof_dai->cpu_dai_name) 165 continue; 166 167 if (!strcmp(dai_name, sof_dai->cpu_dai_name) && 168 dir == sof_dai->comp_dai.direction) { 169 config = sof_dai->dai_config; 170 171 if (!config) { 172 dev_err(hda_stream->sdev->dev, 173 "error: no config for DAI %s\n", 174 sof_dai->name); 175 return -EINVAL; 176 } 177 178 /* update config with stream tag */ 179 config->hda.link_dma_ch = channel; 180 181 /* send IPC */ 182 ret = sof_ipc_tx_message(hda_stream->sdev->ipc, 183 config->hdr.cmd, 184 config, 185 config->hdr.size, 186 &reply, sizeof(reply)); 187 188 if (ret < 0) 189 dev_err(hda_stream->sdev->dev, 190 "error: failed to set dai config for %s\n", 191 sof_dai->name); 192 return ret; 193 } 194 } 195 196 return -EINVAL; 197 } 198 199 static int hda_link_hw_params(struct snd_pcm_substream *substream, 200 struct snd_pcm_hw_params *params, 201 struct snd_soc_dai *dai) 202 { 203 struct hdac_stream *hstream = substream->runtime->private_data; 204 struct hdac_bus *bus = hstream->bus; 205 struct hdac_ext_stream *link_dev; 206 struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); 207 struct snd_soc_dai *codec_dai = rtd->codec_dai; 208 struct sof_intel_hda_stream *hda_stream; 209 struct hda_pipe_params p_params = {0}; 210 struct hdac_ext_link *link; 211 int stream_tag; 212 int ret; 213 214 /* get stored dma data if resuming from system suspend */ 215 link_dev = snd_soc_dai_get_dma_data(dai, substream); 216 if (!link_dev) { 217 link_dev = hda_link_stream_assign(bus, substream); 218 if (!link_dev) 219 return -EBUSY; 220 } 221 222 stream_tag = hdac_stream(link_dev)->stream_tag; 223 224 hda_stream = hstream_to_sof_hda_stream(link_dev); 225 226 /* update the DSP with the new tag */ 227 ret = hda_link_config_ipc(hda_stream, dai->name, stream_tag - 1, 228 substream->stream); 229 if (ret < 0) 230 return ret; 231 232 snd_soc_dai_set_dma_data(dai, substream, (void *)link_dev); 233 234 link = snd_hdac_ext_bus_get_link(bus, codec_dai->component->name); 235 if (!link) 236 return -EINVAL; 237 238 /* set the stream tag in the codec dai dma params */ 239 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 240 snd_soc_dai_set_tdm_slot(codec_dai, stream_tag, 0, 0, 0); 241 else 242 snd_soc_dai_set_tdm_slot(codec_dai, 0, stream_tag, 0, 0); 243 244 p_params.s_fmt = snd_pcm_format_width(params_format(params)); 245 p_params.ch = params_channels(params); 246 p_params.s_freq = params_rate(params); 247 p_params.stream = substream->stream; 248 p_params.link_dma_id = stream_tag - 1; 249 p_params.link_index = link->index; 250 p_params.format = params_format(params); 251 252 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 253 p_params.link_bps = codec_dai->driver->playback.sig_bits; 254 else 255 p_params.link_bps = codec_dai->driver->capture.sig_bits; 256 257 return hda_link_dma_params(link_dev, &p_params); 258 } 259 260 static int hda_link_pcm_prepare(struct snd_pcm_substream *substream, 261 struct snd_soc_dai *dai) 262 { 263 struct hdac_ext_stream *link_dev = 264 snd_soc_dai_get_dma_data(dai, substream); 265 struct sof_intel_hda_stream *hda_stream; 266 struct snd_sof_dev *sdev = 267 snd_soc_component_get_drvdata(dai->component); 268 struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); 269 int stream = substream->stream; 270 271 hda_stream = hstream_to_sof_hda_stream(link_dev); 272 273 if (link_dev->link_prepared) 274 return 0; 275 276 dev_dbg(sdev->dev, "hda: prepare stream dir %d\n", substream->stream); 277 278 return hda_link_hw_params(substream, &rtd->dpcm[stream].hw_params, 279 dai); 280 } 281 282 static int hda_link_pcm_trigger(struct snd_pcm_substream *substream, 283 int cmd, struct snd_soc_dai *dai) 284 { 285 struct hdac_ext_stream *link_dev = 286 snd_soc_dai_get_dma_data(dai, substream); 287 struct sof_intel_hda_stream *hda_stream; 288 struct snd_soc_pcm_runtime *rtd; 289 struct hdac_ext_link *link; 290 struct hdac_stream *hstream; 291 struct hdac_bus *bus; 292 int stream_tag; 293 int ret; 294 295 hstream = substream->runtime->private_data; 296 bus = hstream->bus; 297 rtd = snd_pcm_substream_chip(substream); 298 299 link = snd_hdac_ext_bus_get_link(bus, rtd->codec_dai->component->name); 300 if (!link) 301 return -EINVAL; 302 303 hda_stream = hstream_to_sof_hda_stream(link_dev); 304 305 dev_dbg(dai->dev, "In %s cmd=%d\n", __func__, cmd); 306 switch (cmd) { 307 case SNDRV_PCM_TRIGGER_RESUME: 308 /* set up hw_params */ 309 ret = hda_link_pcm_prepare(substream, dai); 310 if (ret < 0) { 311 dev_err(dai->dev, 312 "error: setting up hw_params during resume\n"); 313 return ret; 314 } 315 316 /* fallthrough */ 317 case SNDRV_PCM_TRIGGER_START: 318 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 319 snd_hdac_ext_link_stream_start(link_dev); 320 break; 321 case SNDRV_PCM_TRIGGER_SUSPEND: 322 case SNDRV_PCM_TRIGGER_STOP: 323 /* 324 * clear link DMA channel. It will be assigned when 325 * hw_params is set up again after resume. 326 */ 327 ret = hda_link_config_ipc(hda_stream, dai->name, 328 DMA_CHAN_INVALID, substream->stream); 329 if (ret < 0) 330 return ret; 331 332 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 333 stream_tag = hdac_stream(link_dev)->stream_tag; 334 snd_hdac_ext_link_clear_stream_id(link, stream_tag); 335 } 336 337 link_dev->link_prepared = 0; 338 339 /* fallthrough */ 340 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 341 snd_hdac_ext_link_stream_clear(link_dev); 342 break; 343 default: 344 return -EINVAL; 345 } 346 return 0; 347 } 348 349 static int hda_link_hw_free(struct snd_pcm_substream *substream, 350 struct snd_soc_dai *dai) 351 { 352 unsigned int stream_tag; 353 struct sof_intel_hda_stream *hda_stream; 354 struct hdac_bus *bus; 355 struct hdac_ext_link *link; 356 struct hdac_stream *hstream; 357 struct snd_soc_pcm_runtime *rtd; 358 struct hdac_ext_stream *link_dev; 359 int ret; 360 361 hstream = substream->runtime->private_data; 362 bus = hstream->bus; 363 rtd = snd_pcm_substream_chip(substream); 364 link_dev = snd_soc_dai_get_dma_data(dai, substream); 365 hda_stream = hstream_to_sof_hda_stream(link_dev); 366 367 /* free the link DMA channel in the FW */ 368 ret = hda_link_config_ipc(hda_stream, dai->name, DMA_CHAN_INVALID, 369 substream->stream); 370 if (ret < 0) 371 return ret; 372 373 link = snd_hdac_ext_bus_get_link(bus, rtd->codec_dai->component->name); 374 if (!link) 375 return -EINVAL; 376 377 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 378 stream_tag = hdac_stream(link_dev)->stream_tag; 379 snd_hdac_ext_link_clear_stream_id(link, stream_tag); 380 } 381 382 snd_soc_dai_set_dma_data(dai, substream, NULL); 383 snd_hdac_ext_stream_release(link_dev, HDAC_EXT_STREAM_TYPE_LINK); 384 link_dev->link_prepared = 0; 385 386 /* free the host DMA channel reserved by hostless streams */ 387 hda_stream->host_reserved = 0; 388 389 return 0; 390 } 391 392 static const struct snd_soc_dai_ops hda_link_dai_ops = { 393 .hw_params = hda_link_hw_params, 394 .hw_free = hda_link_hw_free, 395 .trigger = hda_link_pcm_trigger, 396 .prepare = hda_link_pcm_prepare, 397 }; 398 #endif 399 400 /* 401 * common dai driver for skl+ platforms. 402 * some products who use this DAI array only physically have a subset of 403 * the DAIs, but no harm is done here by adding the whole set. 404 */ 405 struct snd_soc_dai_driver skl_dai[] = { 406 { 407 .name = "SSP0 Pin", 408 }, 409 { 410 .name = "SSP1 Pin", 411 }, 412 { 413 .name = "SSP2 Pin", 414 }, 415 { 416 .name = "SSP3 Pin", 417 }, 418 { 419 .name = "SSP4 Pin", 420 }, 421 { 422 .name = "SSP5 Pin", 423 }, 424 { 425 .name = "DMIC01 Pin", 426 }, 427 { 428 .name = "DMIC16k Pin", 429 }, 430 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) 431 { 432 .name = "iDisp1 Pin", 433 .ops = &hda_link_dai_ops, 434 }, 435 { 436 .name = "iDisp2 Pin", 437 .ops = &hda_link_dai_ops, 438 }, 439 { 440 .name = "iDisp3 Pin", 441 .ops = &hda_link_dai_ops, 442 }, 443 { 444 .name = "Analog CPU DAI", 445 .ops = &hda_link_dai_ops, 446 }, 447 { 448 .name = "Digital CPU DAI", 449 .ops = &hda_link_dai_ops, 450 }, 451 { 452 .name = "Alt Analog CPU DAI", 453 .ops = &hda_link_dai_ops, 454 }, 455 #endif 456 }; 457