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