| Message ID | 1440173181-3150-4-git-send-email-vinod.koul@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, 21 Aug 2015 18:06:19 +0200, Vinod Koul wrote: > > From: Jeeja KP <jeeja.kp@intel.com> > > Add a helper to find the stream using stream tag and direction. > This is useful for drivers to query stream based on stream tag and > direction, fox example while downloading FW thru DSP loader code > > Signed-off-by: Jeeja KP <jeeja.kp@intel.com> > Signed-off-by: Vinod Koul <vinod.koul@intel.com> > --- > include/sound/hdaudio.h | 2 ++ > sound/hda/hdac_stream.c | 19 +++++++++++++++++++ > 2 files changed, 21 insertions(+) > > diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h > index e37c3355ae8a..67f7068696b9 100644 > --- a/include/sound/hdaudio.h > +++ b/include/sound/hdaudio.h > @@ -438,6 +438,8 @@ void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev, > struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus, > struct snd_pcm_substream *substream); > void snd_hdac_stream_release(struct hdac_stream *azx_dev); > +struct hdac_stream *snd_hdac_get_hdac_stream(struct hdac_bus *bus, > + int dir, int stream_tag); > > int snd_hdac_stream_setup(struct hdac_stream *azx_dev); > void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); > diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c > index 4c15d0accc9e..02aed2e85504 100644 > --- a/sound/hda/hdac_stream.c > +++ b/sound/hda/hdac_stream.c > @@ -286,6 +286,25 @@ void snd_hdac_stream_release(struct hdac_stream *azx_dev) > } > EXPORT_SYMBOL_GPL(snd_hdac_stream_release); > > +/** > + * snd_hdac_get_hdac_stream - return hdac_stream based on stream_tag and > + * direction > + * > + * @bus: HD-audio core bus > + */ Please complete the description. > +struct hdac_stream *snd_hdac_get_hdac_stream(struct hdac_bus *bus, > + int dir, int stream_tag) > +{ > + struct hdac_stream *s; > + > + list_for_each_entry(s, &bus->stream_list, list) { > + if (s->direction == dir && s->stream_tag == stream_tag) > + return s; > + } > + > + return NULL; > +} > +EXPORT_SYMBOL_GPL(snd_hdac_get_hdac_stream); > /* Put the empty line after EXPORT_SYMBOL_GPL(). thanks, Takashi
On Fri, Aug 21, 2015 at 06:35:09PM +0200, Takashi Iwai wrote: > On Fri, 21 Aug 2015 18:06:19 +0200, > > +/** > > + * snd_hdac_get_hdac_stream - return hdac_stream based on stream_tag and > > + * direction > > + * > > + * @bus: HD-audio core bus > > + */ > > Please complete the description. Okay will add more details > > +EXPORT_SYMBOL_GPL(snd_hdac_get_hdac_stream); > > /* > > Put the empty line after EXPORT_SYMBOL_GPL(). Sure
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index e37c3355ae8a..67f7068696b9 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -438,6 +438,8 @@ void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev, struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus, struct snd_pcm_substream *substream); void snd_hdac_stream_release(struct hdac_stream *azx_dev); +struct hdac_stream *snd_hdac_get_hdac_stream(struct hdac_bus *bus, + int dir, int stream_tag); int snd_hdac_stream_setup(struct hdac_stream *azx_dev); void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index 4c15d0accc9e..02aed2e85504 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -286,6 +286,25 @@ void snd_hdac_stream_release(struct hdac_stream *azx_dev) } EXPORT_SYMBOL_GPL(snd_hdac_stream_release); +/** + * snd_hdac_get_hdac_stream - return hdac_stream based on stream_tag and + * direction + * + * @bus: HD-audio core bus + */ +struct hdac_stream *snd_hdac_get_hdac_stream(struct hdac_bus *bus, + int dir, int stream_tag) +{ + struct hdac_stream *s; + + list_for_each_entry(s, &bus->stream_list, list) { + if (s->direction == dir && s->stream_tag == stream_tag) + return s; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(snd_hdac_get_hdac_stream); /* * set up a BDL entry */