1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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.
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
8 // Authors: Keyon Jie <yang.jie@linux.intel.com>
11 #include <sound/pcm_params.h>
12 #include <sound/hdaudio_ext.h>
13 #include "../sof-priv.h"
14 #include "../sof-audio.h"
17 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
19 struct hda_pipe_params {
26 snd_pcm_format_t format;
29 unsigned int host_bps;
30 unsigned int link_bps;
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.
38 static bool hda_check_fes(struct snd_soc_pcm_runtime *rtd,
39 int dir, int stream_tag)
41 struct snd_pcm_substream *fe_substream;
42 struct hdac_stream *fe_hstream;
43 struct snd_soc_dpcm *dpcm;
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)
55 static struct hdac_ext_stream *
56 hda_link_stream_assign(struct hdac_bus *bus,
57 struct snd_pcm_substream *substream)
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;
64 int stream_dir = substream->stream;
67 dev_err(bus->dev, "stream type not supported\n");
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)
77 hda_stream = hstream_to_sof_hda_stream(hstream);
79 /* check if link is available */
80 if (!hstream->link_locked) {
83 * check if the stream tag matches the stream
84 * tag of one of the connected FEs
86 if (hda_check_fes(rtd, stream_dir,
87 stream->stream_tag)) {
95 * This must be a hostless stream.
96 * So reserve the host DMA channel.
98 hda_stream->host_reserved = 1;
106 * Decouple host and link DMA. The decoupled flag
107 * is updated in snd_hdac_ext_stream_decouple().
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);
120 static int hda_link_dma_params(struct hdac_ext_stream *stream,
121 struct hda_pipe_params *params)
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;
129 snd_hdac_ext_stream_decouple(bus, stream, true);
130 snd_hdac_ext_link_stream_reset(stream);
132 format_val = snd_hdac_calc_stream_format(params->s_freq, params->ch,
134 params->link_bps, 0);
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);
139 snd_hdac_ext_link_stream_setup(stream, format_val);
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,
149 stream->link_prepared = 1;
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)
158 struct sof_ipc_dai_config *config;
159 struct snd_sof_dai *sof_dai;
160 struct sof_ipc_reply reply;
163 list_for_each_entry(sof_dai, &hda_stream->sdev->dai_list, list) {
164 if (!sof_dai->cpu_dai_name)
167 if (!strcmp(dai_name, sof_dai->cpu_dai_name) &&
168 dir == sof_dai->comp_dai.direction) {
169 config = sof_dai->dai_config;
172 dev_err(hda_stream->sdev->dev,
173 "error: no config for DAI %s\n",
178 /* update config with stream tag */
179 config->hda.link_dma_ch = channel;
182 ret = sof_ipc_tx_message(hda_stream->sdev->ipc,
186 &reply, sizeof(reply));
189 dev_err(hda_stream->sdev->dev,
190 "error: failed to set dai config for %s\n",
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)
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;
214 /* get stored dma data if resuming from system suspend */
215 link_dev = snd_soc_dai_get_dma_data(dai, substream);
217 link_dev = hda_link_stream_assign(bus, substream);
221 snd_soc_dai_set_dma_data(dai, substream, (void *)link_dev);
224 stream_tag = hdac_stream(link_dev)->stream_tag;
226 hda_stream = hstream_to_sof_hda_stream(link_dev);
228 /* update the DSP with the new tag */
229 ret = hda_link_config_ipc(hda_stream, dai->name, stream_tag - 1,
234 link = snd_hdac_ext_bus_get_link(bus, codec_dai->component->name);
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);
242 snd_soc_dai_set_tdm_slot(codec_dai, 0, stream_tag, 0, 0);
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);
252 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
253 p_params.link_bps = codec_dai->driver->playback.sig_bits;
255 p_params.link_bps = codec_dai->driver->capture.sig_bits;
257 return hda_link_dma_params(link_dev, &p_params);
260 static int hda_link_pcm_prepare(struct snd_pcm_substream *substream,
261 struct snd_soc_dai *dai)
263 struct hdac_ext_stream *link_dev =
264 snd_soc_dai_get_dma_data(dai, substream);
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;
270 if (link_dev->link_prepared)
273 dev_dbg(sdev->dev, "hda: prepare stream dir %d\n", substream->stream);
275 return hda_link_hw_params(substream, &rtd->dpcm[stream].hw_params,
279 static int hda_link_pcm_trigger(struct snd_pcm_substream *substream,
280 int cmd, struct snd_soc_dai *dai)
282 struct hdac_ext_stream *link_dev =
283 snd_soc_dai_get_dma_data(dai, substream);
284 struct sof_intel_hda_stream *hda_stream;
285 struct snd_soc_pcm_runtime *rtd;
286 struct hdac_ext_link *link;
287 struct hdac_stream *hstream;
288 struct hdac_bus *bus;
292 hstream = substream->runtime->private_data;
294 rtd = snd_pcm_substream_chip(substream);
296 link = snd_hdac_ext_bus_get_link(bus, rtd->codec_dai->component->name);
300 hda_stream = hstream_to_sof_hda_stream(link_dev);
302 dev_dbg(dai->dev, "In %s cmd=%d\n", __func__, cmd);
304 case SNDRV_PCM_TRIGGER_RESUME:
305 /* set up hw_params */
306 ret = hda_link_pcm_prepare(substream, dai);
309 "error: setting up hw_params during resume\n");
314 case SNDRV_PCM_TRIGGER_START:
315 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
316 snd_hdac_ext_link_stream_start(link_dev);
318 case SNDRV_PCM_TRIGGER_SUSPEND:
319 case SNDRV_PCM_TRIGGER_STOP:
321 * clear link DMA channel. It will be assigned when
322 * hw_params is set up again after resume.
324 ret = hda_link_config_ipc(hda_stream, dai->name,
325 DMA_CHAN_INVALID, substream->stream);
329 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
330 stream_tag = hdac_stream(link_dev)->stream_tag;
331 snd_hdac_ext_link_clear_stream_id(link, stream_tag);
334 link_dev->link_prepared = 0;
337 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
338 snd_hdac_ext_link_stream_clear(link_dev);
346 static int hda_link_hw_free(struct snd_pcm_substream *substream,
347 struct snd_soc_dai *dai)
349 unsigned int stream_tag;
350 struct sof_intel_hda_stream *hda_stream;
351 struct hdac_bus *bus;
352 struct hdac_ext_link *link;
353 struct hdac_stream *hstream;
354 struct snd_soc_pcm_runtime *rtd;
355 struct hdac_ext_stream *link_dev;
358 hstream = substream->runtime->private_data;
360 rtd = snd_pcm_substream_chip(substream);
361 link_dev = snd_soc_dai_get_dma_data(dai, substream);
365 "%s: link_dev is not assigned\n", __func__);
369 hda_stream = hstream_to_sof_hda_stream(link_dev);
371 /* free the link DMA channel in the FW */
372 ret = hda_link_config_ipc(hda_stream, dai->name, DMA_CHAN_INVALID,
377 link = snd_hdac_ext_bus_get_link(bus, rtd->codec_dai->component->name);
381 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
382 stream_tag = hdac_stream(link_dev)->stream_tag;
383 snd_hdac_ext_link_clear_stream_id(link, stream_tag);
386 snd_soc_dai_set_dma_data(dai, substream, NULL);
387 snd_hdac_ext_stream_release(link_dev, HDAC_EXT_STREAM_TYPE_LINK);
388 link_dev->link_prepared = 0;
390 /* free the host DMA channel reserved by hostless streams */
391 hda_stream->host_reserved = 0;
396 static const struct snd_soc_dai_ops hda_link_dai_ops = {
397 .hw_params = hda_link_hw_params,
398 .hw_free = hda_link_hw_free,
399 .trigger = hda_link_pcm_trigger,
400 .prepare = hda_link_pcm_prepare,
405 * common dai driver for skl+ platforms.
406 * some products who use this DAI array only physically have a subset of
407 * the DAIs, but no harm is done here by adding the whole set.
409 struct snd_soc_dai_driver skl_dai[] = {
429 .name = "DMIC01 Pin",
432 .name = "DMIC16k Pin",
434 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
436 .name = "iDisp1 Pin",
437 .ops = &hda_link_dai_ops,
440 .name = "iDisp2 Pin",
441 .ops = &hda_link_dai_ops,
444 .name = "iDisp3 Pin",
445 .ops = &hda_link_dai_ops,
448 .name = "iDisp4 Pin",
449 .ops = &hda_link_dai_ops,
452 .name = "Analog CPU DAI",
453 .ops = &hda_link_dai_ops,
456 .name = "Digital CPU DAI",
457 .ops = &hda_link_dai_ops,
460 .name = "Alt Analog CPU DAI",
461 .ops = &hda_link_dai_ops,