From: Jeeja KP jeeja.kp@intel.com
This will be used by hda controller driver to setup stream params in prepare. This function will setup the bdl and periods.
Signed-off-by: Jeeja KP jeeja.kp@intel.com Signed-off-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- include/sound/hdaudio.h | 2 ++ sound/hda/hdac_stream.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index 5fc6d81..1f9f4ec 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -364,6 +364,8 @@ void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, unsigned int streams); void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, unsigned int streams); +int snd_set_hdac_stream_params(struct hdac_stream *azx_dev, + unsigned int format_val);
/*DSP loader functions */ int snd_hdac_load_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index 394fd15..ce25f8f 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -472,6 +472,35 @@ void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, } EXPORT_SYMBOL_GPL(snd_hdac_stream_sync);
+int snd_set_hdac_stream_params(struct hdac_stream *azx_dev, + unsigned int format_val) +{ + + unsigned int bufsize, period_bytes; + struct snd_pcm_substream *substream = azx_dev->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + bufsize = snd_pcm_lib_buffer_bytes(substream); + period_bytes = snd_pcm_lib_period_bytes(substream); + + if (bufsize != azx_dev->bufsize || + period_bytes != azx_dev->period_bytes || + format_val != azx_dev->format_val || + runtime->no_period_wakeup != azx_dev->no_period_wakeup) { + azx_dev->bufsize = bufsize; + azx_dev->period_bytes = period_bytes; + azx_dev->format_val = format_val; + azx_dev->no_period_wakeup = runtime->no_period_wakeup; + err = snd_hdac_stream_setup_periods(azx_dev); + if (err < 0) + return err; + } + return 0; +} +EXPORT_SYMBOL_GPL(snd_set_hdac_stream_params); + + int snd_hdac_load_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, unsigned int byte_size, struct snd_dma_buffer *bufp)