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linux_dsm_epyc7002/sound/soc/sof/pcm.c
Keyon Jie ac8c046f19
ASoC: SOF: ignore suspend/resume for D0ix compatible streams 
During system suspend, the PM framework will freeze all applications and
the ALSA/ASoC core will suspend all RUNNING PCM streams.

However, D0ix-compatible PCM streams should keep the related pipelines
active in the DSP when the system is entering S0ix. The TRIGGER_SUSPEND
event is trapped in such cases to prevent the pipelines from being
stopped. Likewise, the TRIGGER_RESUME/START events should not affect the
pipeline state.

The SOF driver also triggers some DSP Firmware pipelines based on the
DAPM widgets power events. In such cases, we also ignore PRE_PMU and
POST_PMD events to keep the pipelines active.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191025224122.7718-23-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-28 14:45:53 +00:00

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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 "ops.h"
#define DRV_NAME "sof-audio-component"
/* 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_dev *sdev = snd_soc_component_get_drvdata(component);
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(sdev, rtd);
if (!spcm)
return -EINVAL;
return snd_sof_create_page_table(sdev, 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_sof_dev *sdev = spcm->sdev;
/* validate offset */
int ret = snd_sof_ipc_pcm_params(sdev, substream, reply);
if (ret < 0)
dev_err(sdev->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, DRV_NAME);
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_pcm *spcm;
spcm = snd_sof_find_spcm_dai(sdev, rtd);
if (!spcm) {
dev_err(sdev->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);
/* this may get called several times by oss emulation */
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(sdev, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(sdev->dev, "pcm: hw params stream %d dir %d\n",
spcm->pcm.pcm_id, substream->stream);
memset(&pcm, 0, sizeof(pcm));
/* allocate audio buffer pages */
ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
if (ret < 0) {
dev_err(sdev->dev, "error: could not allocate %d bytes for PCM %d\n",
params_buffer_bytes(params), spcm->pcm.pcm_id);
return ret;
}
if (ret) {
/*
* ret == 1 means the buffer is changed
* create compressed page table for audio firmware
* ret == 0 means the buffer is not changed
* so no need to regenerate the page table
*/
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(sdev->dev, "error: platform hw params failed\n");
return ret;
}
dev_dbg(sdev->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(sdev->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_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_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(sdev, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(sdev->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;
}
snd_pcm_lib_free_pages(substream);
cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work);
ret = snd_sof_pcm_platform_hw_free(sdev, substream);
if (ret < 0) {
dev_err(sdev->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_dev *sdev = snd_soc_component_get_drvdata(component);
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(sdev, rtd);
if (!spcm)
return -EINVAL;
if (spcm->prepared[substream->stream])
return 0;
dev_dbg(sdev->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(sdev->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(sdev, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(sdev->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(sdev->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->s0_suspend &&
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(sdev->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(sdev, 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(sdev->dev, "PCM: stream %d dir %d DMA position %lu DAI position %lu\n",
spcm->pcm.pcm_id, substream->stream, host, dai);
return host;
}
#ifdef CONFIG_SND_DMA_SGBUF
static struct page *sof_pcm_page(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
unsigned long offset)
{
return snd_pcm_sgbuf_ops_page(substream, offset);
}
#else
#define sof_pcm_page NULL
#endif /* CONFIG_SND_DMA_SGBUF */
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(sdev, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(sdev->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(sdev->dev, "period min %zd max %zd bytes\n",
runtime->hw.period_bytes_min,
runtime->hw.period_bytes_max);
dev_dbg(sdev->dev, "period count %d max %d\n",
runtime->hw.periods_min,
runtime->hw.periods_max);
dev_dbg(sdev->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(sdev->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(sdev, rtd);
if (!spcm)
return -EINVAL;
dev_dbg(sdev->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(sdev->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(sdev, rtd);
if (!spcm) {
dev_warn(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
rtd->dai_link->id);
return 0;
}
dev_dbg(sdev->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(sdev->dev, "spcm: allocate %s playback DMA buffer size 0x%x max 0x%x\n",
caps->name, caps->buffer_size_min, caps->buffer_size_max);
snd_pcm_lib_preallocate_pages(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(sdev->dev, "spcm: allocate %s capture DMA buffer size 0x%x max 0x%x\n",
caps->name, caps->buffer_size_min, caps->buffer_size_max);
snd_pcm_lib_preallocate_pages(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, DRV_NAME);
struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
struct snd_sof_dai *dai =
snd_sof_find_dai(sdev, (char *)rtd->dai_link->name);
/* no topology exists for this BE, try a common configuration */
if (!dai) {
dev_warn(sdev->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(sdev->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(sdev->dev,
"rate_min: %d rate_max: %d\n", rate->min, rate->max);
dev_dbg(sdev->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(sdev->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(sdev->dev,
"channels_min: %d channels_max: %d\n",
channels->min, channels->max);
break;
default:
dev_err(sdev->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(sdev, tplg_filename);
if (ret < 0) {
dev_err(sdev->dev, "error: failed to load DSP topology %d\n",
ret);
return ret;
}
/*
* Some platforms in SOF, ex: BYT, may not have their platform PM
* callbacks set. Increment the usage count so as to
* prevent the device from entering runtime suspend.
*/
if (!sof_ops(sdev)->runtime_suspend || !sof_ops(sdev)->runtime_resume)
pm_runtime_get_noresume(sdev->dev);
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->ioctl = snd_soc_pcm_lib_ioctl;
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;
pd->page = sof_pcm_page;
#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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