diff options
| author |   Vinod Koul <vinod.koul@intel.com> | 2014-09-19 16:46:03 +0530 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2014-09-25 15:22:23 +0100 |
| commit | 0121327c1a68bc8c80f240c2794e682722b69051 (patch) | |
| tree | 516a8f170dd1789a4afcc4730fb8a67b0cafd8cb /sound/soc/intel/sst-mfld-platform-pcm.c | |
| parent | ASoC: Intel: mrfld: Use snd_soc_dai_get_drvdata to derive drv data (diff) | |
| download | linux-dev-0121327c1a68bc8c80f240c2794e682722b69051.tar.xz linux-dev-0121327c1a68bc8c80f240c2794e682722b69051.zip | |
ASoC: Intel: mfld-pcm: add control for powering up/down dsp
When we have PCM (FE/BE) opened or DAPM widgets triggered we need power
up/down DSP accordingly. The DSP will do ref count of these requests
i.e. link these runtime_get/put calls of DSP
Also fix some preexisting spacing error.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/intel/sst-mfld-platform-pcm.c')
| -rw-r--r-- | sound/soc/intel/sst-mfld-platform-pcm.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sound/soc/intel/sst-mfld-platform-pcm.c b/sound/soc/intel/sst-mfld-platform-pcm.c index 8e1b2c14291c..aa9b600dfc9b 100644 --- a/sound/soc/intel/sst-mfld-platform-pcm.c +++ b/sound/soc/intel/sst-mfld-platform-pcm.c @@ -322,6 +322,16 @@ static int sst_platform_init_stream(struct snd_pcm_substream *substream) } +static int power_up_sst(struct sst_runtime_stream *stream) +{ + return stream->ops->power(sst->dev, true); +} + +static void power_down_sst(struct sst_runtime_stream *stream) +{ + stream->ops->power(sst->dev, false); +} + static int sst_media_open(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -351,6 +361,10 @@ static int sst_media_open(struct snd_pcm_substream *substream, /* allocate memory for SST API set */ runtime->private_data = stream; + ret_val = power_up_sst(stream); + if (ret_val < 0) + return ret_val; + /* Make sure, that the period size is always even */ snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, 2); @@ -370,6 +384,8 @@ static void sst_media_close(struct snd_pcm_substream *substream, int ret_val = 0, str_id; stream = substream->runtime->private_data; + power_down_sst(stream); + str_id = stream->stream_info.str_id; if (str_id) ret_val = stream->ops->close(sst->dev, str_id); |