At Fri, 17 Apr 2015 14:43:15 +0530, Vinod Koul wrote:
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.
OK, it's fine to add this function if soc-hda driver needs it too. But please put the kerneldoc comment to the function, too. Then I can apply this patch even before other patches.
thanks,
Takashi
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 | 31 +++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index b871f00bb185..227e71956c35 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -417,6 +417,8 @@ void snd_hdac_stream_release(struct hdac_stream *azx_dev); int snd_hdac_stream_setup(struct hdac_stream *azx_dev); void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev); +int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
unsigned int format_val);void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start); void snd_hdac_stream_clear(struct hdac_stream *azx_dev); void snd_hdac_stream_stop(struct hdac_stream *azx_dev); diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index 8bd67a824b5e..618e742f527f 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -393,6 +393,37 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev) } EXPORT_SYMBOL_GPL(snd_hdac_stream_setup_periods);
+int snd_hdac_stream_set_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;
- int err;
- if (!substream)
return -EINVAL;- runtime = substream->runtime;
- 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_hdac_stream_set_params);
static cycle_t azx_cc_read(const struct cyclecounter *cc) { struct hdac_stream *azx_dev = container_of(cc, struct hdac_stream, cc); -- 1.7.9.5