Quelle  ipc3-pcm.c   Sprache: C

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2021 Intel Corporation
//
//

#include <sound/pcm_params.h>
#include "ipc3-priv.h"
#include "ops.h"
#include "sof-priv.h"
#include "sof-audio.h"

static int sof_ipc3_pcm_hw_free(struct snd_soc_component *component,
    struct snd_pcm_substream *substream)
{
 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 struct sof_ipc_stream stream;
 struct snd_sof_pcm *spcm;

 spcm = snd_sof_find_spcm_dai(component, rtd);
 if (!spcm)
  return -EINVAL;

 if (!spcm->prepared[substream->stream])
  return 0;

 stream.hdr.size = sizeof(stream);
 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_FREE;
 stream.comp_id = spcm->stream[substream->stream].comp_id;

 /* send IPC to the DSP */
 return sof_ipc_tx_message_no_reply(sdev->ipc, &stream, sizeof(stream));
}

static int sof_ipc3_pcm_hw_params(struct snd_soc_component *component,
      struct snd_pcm_substream *substream,
      struct snd_pcm_hw_params *params,
      struct snd_sof_platform_stream_params *platform_params)
{
 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 struct sof_ipc_fw_version *v = &sdev->fw_ready.version;
 struct snd_pcm_runtime *runtime = substream->runtime;
 struct sof_ipc_pcm_params_reply ipc_params_reply;
 struct sof_ipc_pcm_params pcm;
 struct snd_sof_pcm *spcm;
 int ret;

 spcm = snd_sof_find_spcm_dai(component, rtd);
 if (!spcm)
  return -EINVAL;

 memset(&pcm, 0, sizeof(pcm));

 /* number of pages should be rounded up */
 pcm.params.buffer.pages = PFN_UP(runtime->dma_bytes);

 /* set IPC PCM parameters */
 pcm.hdr.size = sizeof(pcm);
 pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS;
 pcm.comp_id = spcm->stream[substream->stream].comp_id;
 pcm.params.hdr.size = sizeof(pcm.params);
 pcm.params.buffer.phy_addr = spcm->stream[substream->stream].page_table.addr;
 pcm.params.buffer.size = runtime->dma_bytes;
 pcm.params.direction = substream->stream;
 pcm.params.sample_valid_bytes = params_width(params) >> 3;
 pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED;
 pcm.params.rate = params_rate(params);
 pcm.params.channels = params_channels(params);
 pcm.params.host_period_bytes = params_period_bytes(params);

 /* container size */
 ret = snd_pcm_format_physical_width(params_format(params));
 if (ret < 0)
  return ret;
 pcm.params.sample_container_bytes = ret >> 3;

 /* format */
 switch (params_format(params)) {
 case SNDRV_PCM_FORMAT_S16:
  pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE;
  break;
 case SNDRV_PCM_FORMAT_S24:
  pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE;
  break;
 case SNDRV_PCM_FORMAT_S32:
  pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE;
  break;
 case SNDRV_PCM_FORMAT_FLOAT:
  pcm.params.frame_fmt = SOF_IPC_FRAME_FLOAT;
  break;
 default:
  return -EINVAL;
 }

 /* Update the IPC message with information from the platform */
 pcm.params.stream_tag = platform_params->stream_tag;

 if (platform_params->use_phy_address)
  pcm.params.buffer.phy_addr = platform_params->phy_addr;

 if (platform_params->no_ipc_position) {
  /* For older ABIs set host_period_bytes to zero to inform
 * FW we don't want position updates. Newer versions use
 * no_stream_position for this purpose.
 */
  if (v->abi_version < SOF_ABI_VER(3, 10, 0))
   pcm.params.host_period_bytes = 0;
  else
   pcm.params.no_stream_position = 1;
 }

 if (platform_params->cont_update_posn)
  pcm.params.cont_update_posn = 1;

 spcm_dbg(spcm, substream->stream, "stream_tag %d\n",
   pcm.params.stream_tag);

 /* send hw_params IPC to the DSP */
 ret = sof_ipc_tx_message(sdev->ipc, &pcm, sizeof(pcm),
     &ipc_params_reply, sizeof(ipc_params_reply));
 if (ret < 0) {
  spcm_err(spcm, substream->stream,
    "STREAM_PCM_PARAMS ipc failed for stream_tag %d\n",
    pcm.params.stream_tag);
  return ret;
 }

 ret = snd_sof_set_stream_data_offset(sdev, &spcm->stream[substream->stream],
          ipc_params_reply.posn_offset);
 if (ret < 0) {
  spcm_err(spcm, substream->stream, "invalid stream data offset\n");
  return ret;
 }

 return ret;
}

static int sof_ipc3_pcm_trigger(struct snd_soc_component *component,
    struct snd_pcm_substream *substream, int cmd)
{
 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
 struct sof_ipc_stream stream;
 struct snd_sof_pcm *spcm;

 spcm = snd_sof_find_spcm_dai(component, rtd);
 if (!spcm)
  return -EINVAL;

 stream.hdr.size = sizeof(stream);
 stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG;
 stream.comp_id = spcm->stream[substream->stream].comp_id;

 switch (cmd) {
 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
  stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_PAUSE;
  break;
 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
  stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE;
  break;
 case SNDRV_PCM_TRIGGER_START:
  stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
  break;
 case SNDRV_PCM_TRIGGER_SUSPEND:
  fallthrough;
 case SNDRV_PCM_TRIGGER_STOP:
  stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP;
  break;
 default:
  spcm_err(spcm, substream->stream, "Unhandled trigger cmd %d\n", cmd);
  return -EINVAL;
 }

 /* send IPC to the DSP */
 return sof_ipc_tx_message_no_reply(sdev->ipc, &stream, sizeof(stream));
}

static void ssp_dai_config_pcm_params_match(struct snd_sof_dev *sdev, const char *link_name,
         struct snd_pcm_hw_params *params)
{
 struct sof_ipc_dai_config *config;
 struct snd_sof_dai *dai;
 int i;

 /*
 * Search for all matching DAIs as we can have both playback and capture DAI
 * associated with the same link.
 */
 list_for_each_entry(dai, &sdev->dai_list, list) {
  if (!dai->name || strcmp(link_name, dai->name))
   continue;
  for (i = 0; i < dai->number_configs; i++) {
   struct sof_dai_private_data *private = dai->private;

   config = &private->dai_config[i];
   if (config->ssp.fsync_rate == params_rate(params)) {
    dev_dbg(sdev->dev, "DAI config %d matches pcm hw params\n", i);
    dai->current_config = i;
    break;
   }
  }
 }
}

static int sof_ipc3_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
           struct snd_pcm_hw_params *params)
{
 struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
 struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
 struct snd_sof_dai *dai = snd_sof_find_dai(component, (char *)rtd->dai_link->name);
 struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
 struct sof_dai_private_data *private;
 struct snd_soc_dpcm *dpcm;

 if (!dai) {
  dev_err(component->dev, "%s: No DAI found with name %s\n", __func__,
   rtd->dai_link->name);
  return -EINVAL;
 }

 private = dai->private;
 if (!private) {
  dev_err(component->dev, "%s: No private data found for DAI %s\n", __func__,
   rtd->dai_link->name);
  return -EINVAL;
 }

 /* read format from topology */
 snd_mask_none(fmt);

 switch (private->comp_dai->config.frame_fmt) {
 case SOF_IPC_FRAME_S16_LE:
  snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
  break;
 case SOF_IPC_FRAME_S24_4LE:
  snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
  break;
 case SOF_IPC_FRAME_S32_LE:
  snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE);
  break;
 default:
  dev_err(component->dev, "No available DAI format!\n");
  return -EINVAL;
 }

 /* read rate and channels from topology */
 switch (private->dai_config->type) {
 case SOF_DAI_INTEL_SSP:
  /* search for config to pcm params match, if not found use default */
  ssp_dai_config_pcm_params_match(sdev, (char *)rtd->dai_link->name, params);

  rate->min = private->dai_config[dai->current_config].ssp.fsync_rate;
  rate->max = private->dai_config[dai->current_config].ssp.fsync_rate;
  channels->min = private->dai_config[dai->current_config].ssp.tdm_slots;
  channels->max = private->dai_config[dai->current_config].ssp.tdm_slots;

  dev_dbg(component->dev, "rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "channels_min: %d channels_max: %d\n",
   channels->min, channels->max);

  break;
 case SOF_DAI_INTEL_DMIC:
  /* DMIC only supports 16 or 32 bit formats */
  if (private->comp_dai->config.frame_fmt == SOF_IPC_FRAME_S24_4LE) {
   dev_err(component->dev, "Invalid fmt %d for DAI type %d\n",
    private->comp_dai->config.frame_fmt,
    private->dai_config->type);
  }
  break;
 case SOF_DAI_INTEL_HDA:
  /*
 * HDAudio does not follow the default trigger
 * sequence due to firmware implementation
 */
  for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) {
   struct snd_soc_pcm_runtime *fe = dpcm->fe;

   fe->dai_link->trigger[SNDRV_PCM_STREAM_PLAYBACK] =
    SND_SOC_DPCM_TRIGGER_POST;
  }
  break;
 case SOF_DAI_INTEL_ALH:
  /*
 * Dai could run with different channel count compared with
 * front end, so get dai channel count from topology
 */
  channels->min = private->dai_config->alh.channels;
  channels->max = private->dai_config->alh.channels;
  break;
 case SOF_DAI_IMX_ESAI:
  rate->min = private->dai_config->esai.fsync_rate;
  rate->max = private->dai_config->esai.fsync_rate;
  channels->min = private->dai_config->esai.tdm_slots;
  channels->max = private->dai_config->esai.tdm_slots;

  dev_dbg(component->dev, "rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_MEDIATEK_AFE:
  rate->min = private->dai_config->afe.rate;
  rate->max = private->dai_config->afe.rate;
  channels->min = private->dai_config->afe.channels;
  channels->max = private->dai_config->afe.channels;

  snd_mask_none(fmt);

  switch (private->dai_config->afe.format) {
  case SOF_IPC_FRAME_S16_LE:
   snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
   break;
  case SOF_IPC_FRAME_S24_4LE:
   snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
   break;
  case SOF_IPC_FRAME_S32_LE:
   snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S32_LE);
   break;
  default:
   dev_err(component->dev, "Not available format!\n");
   return -EINVAL;
  }

  dev_dbg(component->dev, "rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_IMX_SAI:
  rate->min = private->dai_config->sai.fsync_rate;
  rate->max = private->dai_config->sai.fsync_rate;
  channels->min = private->dai_config->sai.tdm_slots;
  channels->max = private->dai_config->sai.tdm_slots;

  dev_dbg(component->dev, "rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_AMD_BT:
  rate->min = private->dai_config->acpbt.fsync_rate;
  rate->max = private->dai_config->acpbt.fsync_rate;
  channels->min = private->dai_config->acpbt.tdm_slots;
  channels->max = private->dai_config->acpbt.tdm_slots;

  dev_dbg(component->dev,
   "AMD_BT rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "AMD_BT channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_AMD_SP:
 case SOF_DAI_AMD_SP_VIRTUAL:
  rate->min = private->dai_config->acpsp.fsync_rate;
  rate->max = private->dai_config->acpsp.fsync_rate;
  channels->min = private->dai_config->acpsp.tdm_slots;
  channels->max = private->dai_config->acpsp.tdm_slots;

  dev_dbg(component->dev,
   "AMD_SP rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "AMD_SP channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_AMD_HS:
 case SOF_DAI_AMD_HS_VIRTUAL:
  rate->min = private->dai_config->acphs.fsync_rate;
  rate->max = private->dai_config->acphs.fsync_rate;
  channels->min = private->dai_config->acphs.tdm_slots;
  channels->max = private->dai_config->acphs.tdm_slots;

  dev_dbg(component->dev,
   "AMD_HS channel_max: %d rate_max: %d\n", channels->max, rate->max);
  break;
 case SOF_DAI_AMD_DMIC:
  rate->min = private->dai_config->acpdmic.pdm_rate;
  rate->max = private->dai_config->acpdmic.pdm_rate;
  channels->min = private->dai_config->acpdmic.pdm_ch;
  channels->max = private->dai_config->acpdmic.pdm_ch;

  dev_dbg(component->dev,
   "AMD_DMIC rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "AMD_DMIC channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_IMX_MICFIL:
  rate->min = private->dai_config->micfil.pdm_rate;
  rate->max = private->dai_config->micfil.pdm_rate;
  channels->min = private->dai_config->micfil.pdm_ch;
  channels->max = private->dai_config->micfil.pdm_ch;

  dev_dbg(component->dev,
   "MICFIL PDM rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "MICFIL PDM channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 case SOF_DAI_AMD_SDW:
  /* change the default trigger sequence as per HW implementation */
  for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_PLAYBACK, dpcm) {
   struct snd_soc_pcm_runtime *fe = dpcm->fe;

   fe->dai_link->trigger[SNDRV_PCM_STREAM_PLAYBACK] =
     SND_SOC_DPCM_TRIGGER_POST;
  }

  for_each_dpcm_fe(rtd, SNDRV_PCM_STREAM_CAPTURE, dpcm) {
   struct snd_soc_pcm_runtime *fe = dpcm->fe;

   fe->dai_link->trigger[SNDRV_PCM_STREAM_CAPTURE] =
     SND_SOC_DPCM_TRIGGER_POST;
  }
  rate->min = private->dai_config->acp_sdw.rate;
  rate->max = private->dai_config->acp_sdw.rate;
  channels->min = private->dai_config->acp_sdw.channels;
  channels->max = private->dai_config->acp_sdw.channels;

  dev_dbg(component->dev,
   "AMD_SDW rate_min: %d rate_max: %d\n", rate->min, rate->max);
  dev_dbg(component->dev, "AMD_SDW channels_min: %d channels_max: %d\n",
   channels->min, channels->max);
  break;
 default:
  dev_err(component->dev, "Invalid DAI type %d\n", private->dai_config->type);
  break;
 }

 return 0;
}

const struct sof_ipc_pcm_ops ipc3_pcm_ops = {
 .hw_params = sof_ipc3_pcm_hw_params,
 .hw_free = sof_ipc3_pcm_hw_free,
 .trigger = sof_ipc3_pcm_trigger,
 .dai_link_fixup = sof_ipc3_pcm_dai_link_fixup,
 .reset_hw_params_during_stop = true,
 .d0i3_supported_in_s0ix = true,
};