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OpenCloudOS-Kernel/sound/soc/sof/pcm.c

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// SPDX-License-Identifier: (GPL-2.0 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) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
// PCM Layer, interface between ALSA and IPC.
//
#include <linux/pm_runtime.h>
#include <sound/pcm_params.h>
#include <sound/sof.h>
#include "sof-priv.h"
#include "sof-audio.h"
#include "ops.h"
/* Create DMA buffer page table for DSP */
static int create_page_table(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
unsigned char *dma_area, size_t size)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_sof_pcm *spcm;
struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream);
int stream = substream->stream;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
return snd_sof_create_page_table(component->dev, dmab,
spcm->stream[stream].page_table.area, size);
}
static int sof_pcm_dsp_params(struct snd_sof_pcm *spcm, struct snd_pcm_substream *substream,
const struct sof_ipc_pcm_params_reply *reply)
{
struct snd_soc_component *scomp = spcm->scomp;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
/* validate offset */
int ret = snd_sof_ipc_pcm_params(sdev, substream, reply);
if (ret < 0)
dev_err(scomp->dev, "error: got wrong reply for PCM %d\n",
spcm->pcm.pcm_id);
return ret;
}
/*
* sof pcm period elapse work
*/
static void sof_pcm_period_elapsed_work(struct work_struct *work)
{
struct snd_sof_pcm_stream *sps =
container_of(work, struct snd_sof_pcm_stream,
period_elapsed_work);
snd_pcm_period_elapsed(sps->substream);
}
/*
* sof pcm period elapse, this could be called at irq thread context.
*/
void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component =
snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
struct snd_sof_pcm *spcm;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm) {
dev_err(component->dev,
"error: period elapsed for unknown stream!\n");
return;
}
/*
* snd_pcm_period_elapsed() can be called in interrupt context
* before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(),
* when the PCM is done draining or xrun happened, a STOP IPC will
* then be sent and this IPC will hit IPC timeout.
* To avoid sending IPC before the previous IPC is handled, we
* schedule delayed work here to call the snd_pcm_period_elapsed().
*/
schedule_work(&spcm->stream[substream->stream].period_elapsed_work);
}
EXPORT_SYMBOL(snd_sof_pcm_period_elapsed);
static int sof_pcm_dsp_pcm_free(struct snd_pcm_substream *substream,
struct snd_sof_dev *sdev,
struct snd_sof_pcm *spcm)
{
struct sof_ipc_stream stream;
struct sof_ipc_reply reply;
int ret;
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 */
ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream,
sizeof(stream), &reply, sizeof(reply));
if (!ret)
spcm->prepared[substream->stream] = false;
return ret;
}
static int sof_pcm_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
struct sof_ipc_pcm_params pcm;
struct sof_ipc_pcm_params_reply ipc_params_reply;
int ret;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
/*
* Handle repeated calls to hw_params() without free_pcm() in
* between. At least ALSA OSS emulation depends on this.
*/
if (spcm->prepared[substream->stream]) {
ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm);
if (ret < 0)
return ret;
}
dev_dbg(component->dev, "pcm: hw params stream %d dir %d\n",
spcm->pcm.pcm_id, substream->stream);
memset(&pcm, 0, sizeof(pcm));
/* create compressed page table for audio firmware */
if (runtime->buffer_changed) {
ret = create_page_table(component, substream, runtime->dma_area,
runtime->dma_bytes);
if (ret < 0)
return ret;
}
/* 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;
}
/* firmware already configured host stream */
ret = snd_sof_pcm_platform_hw_params(sdev,
substream,
params,
&pcm.params);
if (ret < 0) {
dev_err(component->dev, "error: platform hw params failed\n");
return ret;
}
dev_dbg(component->dev, "stream_tag %d", pcm.params.stream_tag);
/* send IPC to the DSP */
ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm),
&ipc_params_reply, sizeof(ipc_params_reply));
if (ret < 0) {
dev_err(component->dev, "error: hw params ipc failed for stream %d\n",
pcm.params.stream_tag);
return ret;
}
ret = sof_pcm_dsp_params(spcm, substream, &ipc_params_reply);
if (ret < 0)
return ret;
spcm->prepared[substream->stream] = true;
/* save pcm hw_params */
memcpy(&spcm->params[substream->stream], params, sizeof(*params));
return ret;
}
static int sof_pcm_hw_free(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
int ret, err = 0;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(component->dev, "pcm: free stream %d dir %d\n",
spcm->pcm.pcm_id, substream->stream);
if (spcm->prepared[substream->stream]) {
ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm);
if (ret < 0)
err = ret;
}
cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
ret = snd_sof_pcm_platform_hw_free(sdev, substream);
if (ret < 0) {
dev_err(component->dev, "error: platform hw free failed\n");
err = ret;
}
return err;
}
static int sof_pcm_prepare(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_sof_pcm *spcm;
int ret;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
if (spcm->prepared[substream->stream])
return 0;
dev_dbg(component->dev, "pcm: prepare stream %d dir %d\n",
spcm->pcm.pcm_id, substream->stream);
/* set hw_params */
ret = sof_pcm_hw_params(component,
substream, &spcm->params[substream->stream]);
if (ret < 0) {
dev_err(component->dev,
"error: set pcm hw_params after resume\n");
return ret;
}
return 0;
}
/*
* FE dai link trigger actions are always executed in non-atomic context because
* they involve IPC's.
*/
static int sof_pcm_trigger(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
struct sof_ipc_stream stream;
struct sof_ipc_reply reply;
bool reset_hw_params = false;
bool ipc_first = false;
int ret;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(component->dev, "pcm: trigger stream %d dir %d cmd %d\n",
spcm->pcm.pcm_id, substream->stream, cmd);
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;
ipc_first = true;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_RELEASE;
break;
case SNDRV_PCM_TRIGGER_RESUME:
if (spcm->stream[substream->stream].suspend_ignored) {
/*
* this case will be triggered when INFO_RESUME is
* supported, no need to resume streams that remained
* enabled in D0ix.
*/
spcm->stream[substream->stream].suspend_ignored = false;
return 0;
}
/* set up hw_params */
ret = sof_pcm_prepare(component, substream);
if (ret < 0) {
dev_err(component->dev,
"error: failed to set up hw_params upon resume\n");
return ret;
}
/* fallthrough */
case SNDRV_PCM_TRIGGER_START:
if (spcm->stream[substream->stream].suspend_ignored) {
/*
* This case will be triggered when INFO_RESUME is
* not supported, no need to re-start streams that
* remained enabled in D0ix.
*/
spcm->stream[substream->stream].suspend_ignored = false;
return 0;
}
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
if (sdev->system_suspend_target == SOF_SUSPEND_S0IX &&
spcm->stream[substream->stream].d0i3_compatible) {
/*
* trap the event, not sending trigger stop to
* prevent the FW pipelines from being stopped,
* and mark the flag to ignore the upcoming DAPM
* PM events.
*/
spcm->stream[substream->stream].suspend_ignored = true;
return 0;
}
/* fallthrough */
case SNDRV_PCM_TRIGGER_STOP:
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_STOP;
ipc_first = true;
reset_hw_params = true;
break;
default:
dev_err(component->dev, "error: unhandled trigger cmd %d\n",
cmd);
return -EINVAL;
}
/*
* DMA and IPC sequence is different for start and stop. Need to send
* STOP IPC before stop DMA
*/
if (!ipc_first)
snd_sof_pcm_platform_trigger(sdev, substream, cmd);
/* send IPC to the DSP */
ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream,
sizeof(stream), &reply, sizeof(reply));
/* need to STOP DMA even if STOP IPC failed */
if (ipc_first)
snd_sof_pcm_platform_trigger(sdev, substream, cmd);
/* free PCM if reset_hw_params is set and the STOP IPC is successful */
if (!ret && reset_hw_params)
ret = sof_pcm_dsp_pcm_free(substream, sdev, spcm);
return ret;
}
static snd_pcm_uframes_t sof_pcm_pointer(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
snd_pcm_uframes_t host, dai;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
/* use dsp ops pointer callback directly if set */
if (sof_ops(sdev)->pcm_pointer)
return sof_ops(sdev)->pcm_pointer(sdev, substream);
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
/* read position from DSP */
host = bytes_to_frames(substream->runtime,
spcm->stream[substream->stream].posn.host_posn);
dai = bytes_to_frames(substream->runtime,
spcm->stream[substream->stream].posn.dai_posn);
dev_dbg(component->dev,
"PCM: stream %d dir %d DMA position %lu DAI position %lu\n",
spcm->pcm.pcm_id, substream->stream, host, dai);
return host;
}
static int sof_pcm_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
const struct snd_sof_dsp_ops *ops = sof_ops(sdev);
struct snd_sof_pcm *spcm;
struct snd_soc_tplg_stream_caps *caps;
int ret;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(component->dev, "pcm: open stream %d dir %d\n",
spcm->pcm.pcm_id, substream->stream);
INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work,
sof_pcm_period_elapsed_work);
caps = &spcm->pcm.caps[substream->stream];
/* set any runtime constraints based on topology */
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
le32_to_cpu(caps->period_size_min));
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
le32_to_cpu(caps->period_size_min));
/* set runtime config */
runtime->hw.info = ops->hw_info; /* platform-specific */
runtime->hw.formats = le64_to_cpu(caps->formats);
runtime->hw.period_bytes_min = le32_to_cpu(caps->period_size_min);
runtime->hw.period_bytes_max = le32_to_cpu(caps->period_size_max);
runtime->hw.periods_min = le32_to_cpu(caps->periods_min);
runtime->hw.periods_max = le32_to_cpu(caps->periods_max);
/*
* caps->buffer_size_min is not used since the
* snd_pcm_hardware structure only defines buffer_bytes_max
*/
runtime->hw.buffer_bytes_max = le32_to_cpu(caps->buffer_size_max);
dev_dbg(component->dev, "period min %zd max %zd bytes\n",
runtime->hw.period_bytes_min,
runtime->hw.period_bytes_max);
dev_dbg(component->dev, "period count %d max %d\n",
runtime->hw.periods_min,
runtime->hw.periods_max);
dev_dbg(component->dev, "buffer max %zd bytes\n",
runtime->hw.buffer_bytes_max);
/* set wait time - TODO: come from topology */
substream->wait_time = 500;
spcm->stream[substream->stream].posn.host_posn = 0;
spcm->stream[substream->stream].posn.dai_posn = 0;
spcm->stream[substream->stream].substream = substream;
spcm->prepared[substream->stream] = false;
ret = snd_sof_pcm_platform_open(sdev, substream);
if (ret < 0)
dev_err(component->dev, "error: pcm open failed %d\n", ret);
return ret;
}
static int sof_pcm_close(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
int err;
/* nothing to do for BE */
if (rtd->dai_link->no_pcm)
return 0;
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(component->dev, "pcm: close stream %d dir %d\n",
spcm->pcm.pcm_id, substream->stream);
err = snd_sof_pcm_platform_close(sdev, substream);
if (err < 0) {
dev_err(component->dev, "error: pcm close failed %d\n",
err);
/*
* keep going, no point in preventing the close
* from happening
*/
}
return 0;
}
/*
* Pre-allocate playback/capture audio buffer pages.
* no need to explicitly release memory preallocated by sof_pcm_new in pcm_free
* snd_pcm_lib_preallocate_free_for_all() is called by the core.
*/
static int sof_pcm_new(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
struct snd_pcm *pcm = rtd->pcm;
struct snd_soc_tplg_stream_caps *caps;
int stream = SNDRV_PCM_STREAM_PLAYBACK;
/* find SOF PCM for this RTD */
spcm = snd_sof_find_spcm_dai(component, rtd);
if (!spcm) {
dev_warn(component->dev, "warn: can't find PCM with DAI ID %d\n",
rtd->dai_link->id);
return 0;
}
dev_dbg(component->dev, "creating new PCM %s\n", spcm->pcm.pcm_name);
/* do we need to pre-allocate playback audio buffer pages */
if (!spcm->pcm.playback)
goto capture;
caps = &spcm->pcm.caps[stream];
/* pre-allocate playback audio buffer pages */
dev_dbg(component->dev,
"spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n",
caps->name, caps->buffer_size_min, caps->buffer_size_max);
if (!pcm->streams[stream].substream) {
dev_err(component->dev, "error: NULL playback substream!\n");
return -EINVAL;
}
snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
le32_to_cpu(caps->buffer_size_min),
le32_to_cpu(caps->buffer_size_max));
capture:
stream = SNDRV_PCM_STREAM_CAPTURE;
/* do we need to pre-allocate capture audio buffer pages */
if (!spcm->pcm.capture)
return 0;
caps = &spcm->pcm.caps[stream];
/* pre-allocate capture audio buffer pages */
dev_dbg(component->dev,
"spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n",
caps->name, caps->buffer_size_min, caps->buffer_size_max);
if (!pcm->streams[stream].substream) {
dev_err(component->dev, "error: NULL capture substream!\n");
return -EINVAL;
}
snd_pcm_set_managed_buffer(pcm->streams[stream].substream,
SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
le32_to_cpu(caps->buffer_size_min),
le32_to_cpu(caps->buffer_size_max));
return 0;
}
/* fixup the BE DAI link to match any values from topology */
static int sof_pcm_dai_link_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct snd_interval *rate = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
struct snd_soc_component *component =
snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
struct snd_sof_dai *dai =
snd_sof_find_dai(component, (char *)rtd->dai_link->name);
/* no topology exists for this BE, try a common configuration */
if (!dai) {
dev_warn(component->dev,
"warning: no topology found for BE DAI %s config\n",
rtd->dai_link->name);
/* set 48k, stereo, 16bits by default */
rate->min = 48000;
rate->max = 48000;
channels->min = 2;
channels->max = 2;
snd_mask_none(fmt);
snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
return 0;
}
/* read format from topology */
snd_mask_none(fmt);
switch (dai->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, "error: No available DAI format!\n");
return -EINVAL;
}
/* read rate and channels from topology */
switch (dai->dai_config->type) {
case SOF_DAI_INTEL_SSP:
rate->min = dai->dai_config->ssp.fsync_rate;
rate->max = dai->dai_config->ssp.fsync_rate;
channels->min = dai->dai_config->ssp.tdm_slots;
channels->max = dai->dai_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 (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) {
dev_err(component->dev,
"error: invalid fmt %d for DAI type %d\n",
dai->comp_dai.config.frame_fmt,
dai->dai_config->type);
}
break;
case SOF_DAI_INTEL_HDA:
/* do nothing for HDA dai_link */
break;
case SOF_DAI_INTEL_ALH:
/* do nothing for ALH dai_link */
break;
case SOF_DAI_IMX_ESAI:
channels->min = dai->dai_config->esai.tdm_slots;
channels->max = dai->dai_config->esai.tdm_slots;
dev_dbg(component->dev,
"channels_min: %d channels_max: %d\n",
channels->min, channels->max);
break;
case SOF_DAI_IMX_SAI:
channels->min = dai->dai_config->sai.tdm_slots;
channels->max = dai->dai_config->sai.tdm_slots;
dev_dbg(component->dev,
"channels_min: %d channels_max: %d\n",
channels->min, channels->max);
break;
default:
dev_err(component->dev, "error: invalid DAI type %d\n",
dai->dai_config->type);
break;
}
return 0;
}
static int sof_pcm_probe(struct snd_soc_component *component)
{
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pdata *plat_data = sdev->pdata;
const char *tplg_filename;
int ret;
/* load the default topology */
sdev->component = component;
tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL,
"%s/%s",
plat_data->tplg_filename_prefix,
plat_data->tplg_filename);
if (!tplg_filename)
return -ENOMEM;
ret = snd_sof_load_topology(component, tplg_filename);
if (ret < 0) {
dev_err(component->dev, "error: failed to load DSP topology %d\n",
ret);
return ret;
}
return ret;
}
static void sof_pcm_remove(struct snd_soc_component *component)
{
/* remove topology */
snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL);
}
void snd_sof_new_platform_drv(struct snd_sof_dev *sdev)
{
struct snd_soc_component_driver *pd = &sdev->plat_drv;
struct snd_sof_pdata *plat_data = sdev->pdata;
const char *drv_name;
drv_name = plat_data->machine->drv_name;
pd->name = "sof-audio-component";
pd->probe = sof_pcm_probe;
pd->remove = sof_pcm_remove;
pd->open = sof_pcm_open;
pd->close = sof_pcm_close;
pd->hw_params = sof_pcm_hw_params;
pd->prepare = sof_pcm_prepare;
pd->hw_free = sof_pcm_hw_free;
pd->trigger = sof_pcm_trigger;
pd->pointer = sof_pcm_pointer;
#if IS_ENABLED(CONFIG_SND_SOC_SOF_COMPRESS)
pd->compr_ops = &sof_compressed_ops;
#endif
pd->pcm_construct = sof_pcm_new;
pd->ignore_machine = drv_name;
pd->be_hw_params_fixup = sof_pcm_dai_link_fixup;
pd->be_pcm_base = SOF_BE_PCM_BASE;
pd->use_dai_pcm_id = true;
pd->topology_name_prefix = "sof";
/* increment module refcount when a pcm is opened */
pd->module_get_upon_open = 1;
}
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