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ASoC: Intel: Skylake: Suspend PCMs when marked as active suspend 

For 'ignore_suspend' cases we need to keep DSP and pipes On, but
can suspend the stream and pause the DMA as we are not rendering
data during the suspended time.

For this we can check the dai widget ignore_suspend flag in
trigger suspend/resume, and start and stop the host DMA and host
copier pipelines.

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jeeja KP 2016-04-28 18:45:28 +05:30 committed by Mark Brown
parent 1a13b1faff
commit 9a655db020
1 changed files with 20 additions and 10 deletions
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30
sound/soc/intel/skylake/skl-pcm.c
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@ -402,23 +402,33 @@ static int skl_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
struct skl_module_cfg *mconfig; struct skl_module_cfg *mconfig;
struct hdac_ext_bus *ebus = get_bus_ctx(substream); struct hdac_ext_bus *ebus = get_bus_ctx(substream);
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream); struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
struct snd_soc_dapm_widget *w;
int ret; int ret;
mconfig = skl_tplg_fe_get_cpr_module(dai, substream->stream); mconfig = skl_tplg_fe_get_cpr_module(dai, substream->stream);
if (!mconfig) if (!mconfig)
return -EIO; return -EIO;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
w = dai->playback_widget;
else
w = dai->capture_widget;
switch (cmd) { switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_RESUME:
skl_pcm_prepare(substream, dai); if (!w->ignore_suspend) {
/* skl_pcm_prepare(substream, dai);
* enable DMA Resume enable bit for the stream, set the dpib /*
* & lpib position to resune before starting the DMA * enable DMA Resume enable bit for the stream, set the
*/ * dpib & lpib position to resume before starting the
snd_hdac_ext_stream_drsm_enable(ebus, true, * DMA
hdac_stream(stream)->index); */
snd_hdac_ext_stream_set_dpibr(ebus, stream, stream->dpib); snd_hdac_ext_stream_drsm_enable(ebus, true,
snd_hdac_ext_stream_set_lpib(stream, stream->lpib); hdac_stream(stream)->index);
snd_hdac_ext_stream_set_dpibr(ebus, stream,
stream->dpib);
snd_hdac_ext_stream_set_lpib(stream, stream->lpib);
}
case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
@ -448,7 +458,7 @@ static int skl_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
return ret; return ret;
ret = skl_decoupled_trigger(substream, cmd); ret = skl_decoupled_trigger(substream, cmd);
if (cmd == SNDRV_PCM_TRIGGER_SUSPEND) { if ((cmd == SNDRV_PCM_TRIGGER_SUSPEND) && !w->ignore_suspend) {
/* save the dpib and lpib positions */ /* save the dpib and lpib positions */
stream->dpib = readl(ebus->bus.remap_addr + stream->dpib = readl(ebus->bus.remap_addr +
AZX_REG_VS_SDXDPIB_XBASE + AZX_REG_VS_SDXDPIB_XBASE +