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 | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index d05931fc6f28..6a2e030c836c 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -418,6 +418,8 @@ 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 9ffff6d9ba8e..1ba0462ef7ca 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -394,6 +394,44 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev) } EXPORT_SYMBOL_GPL(snd_hdac_stream_setup_periods);
+/* snd_hdac_stream_set_params - set stream parameters + * @azx_dev: HD-audio core stream for which parameters are to be set + * @format_val: format value parameter + * + * Setup the HD-audio core stream parameters from substream of the stream + * and passed format value + */ +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);