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ASoC: Intel: Skylake: Reset DSP Pipelines in prepare

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An application can choose to call .prepare function
any number of times. In such scenarios, there is a
need to reset the DSP pipeline.

Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
Signed-off-by: Divya Prakash <divya1.prakash@intel.com>
Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pardha Saradhi K 2018-04-02 12:15:48 +05:30 committed by Mark Brown
parent 651e489093
commit 74e651926e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 20 additions and 4 deletions
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24
sound/soc/intel/skylake/skl-pcm.c
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@ -268,15 +268,31 @@ static int skl_pcm_prepare(struct snd_pcm_substream *substream,
{
struct skl *skl = get_skl_ctx(dai->dev);
struct skl_module_cfg *mconfig;
int ret;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
mconfig = skl_tplg_fe_get_cpr_module(dai, substream->stream);
/* In case of XRUN recovery, reset the FW pipe to clean state */
if (mconfig && (substream->runtime->status->state ==
SNDRV_PCM_STATE_XRUN))
skl_reset_pipe(skl->skl_sst, mconfig->pipe);
/*
* In case of XRUN recovery or in the case when the application
* calls prepare another time, reset the FW pipe to clean state
*/
if (mconfig &&
(substream->runtime->status->state == SNDRV_PCM_STATE_XRUN ||
mconfig->pipe->state == SKL_PIPE_CREATED ||
mconfig->pipe->state == SKL_PIPE_PAUSED)) {
ret = skl_reset_pipe(skl->skl_sst, mconfig->pipe);
if (ret < 0)
return ret;
ret = skl_pcm_host_dma_prepare(dai->dev,
mconfig->pipe->p_params);
if (ret < 0)
return ret;
}
return 0;
}