[RFC,1/6] ASoC: core: add support to snd_soc_dai_get_sdw_stream()

Message ID 20190607085643.932-2-srinivas.kandagatla@linaro.org
State New
Headers show
Series
  • soundwire: Add support to Qualcomm SoundWire master
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Commit Message

Srinivas Kandagatla June 7, 2019, 8:56 a.m.
On platforms which have smart speaker amplifiers connected via
soundwire and modeled as aux devices in ASoC, in such usecases machine
driver should be able to get sdw master stream from dai so that it can
use the runtime stream to setup slave streams.

soundwire already as a set function, get function would provide more
flexibility to above configurations.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

---
 include/sound/soc-dai.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

-- 
2.21.0

Comments

Srinivas Kandagatla June 10, 2019, 7:58 a.m. | #1
On 10/06/2019 05:34, Vinod Koul wrote:
> On 07-06-19, 09:56, Srinivas Kandagatla wrote:

>> On platforms which have smart speaker amplifiers connected via

>> soundwire and modeled as aux devices in ASoC, in such usecases machine

>> driver should be able to get sdw master stream from dai so that it can

>> use the runtime stream to setup slave streams.

>>

>> soundwire already as a set function, get function would provide more

>> flexibility to above configurations.

>>

>> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

>> ---

>>   include/sound/soc-dai.h | 10 ++++++++++

>>   1 file changed, 10 insertions(+)

>>

>> diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h

>> index f5d70041108f..9f90b936fd9a 100644

>> --- a/include/sound/soc-dai.h

>> +++ b/include/sound/soc-dai.h

>> @@ -177,6 +177,7 @@ struct snd_soc_dai_ops {

>>   

>>   	int (*set_sdw_stream)(struct snd_soc_dai *dai,

>>   			void *stream, int direction);

>> +	void *(*get_sdw_stream)(struct snd_soc_dai *dai, int direction);

> 

> So who would be calling this API? Machine or someone else?


 From Machine driver in my case where smart speaker amplifiers are 
modeled as aux device which is also dai less.

--srini
>

Patch

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index f5d70041108f..9f90b936fd9a 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -177,6 +177,7 @@  struct snd_soc_dai_ops {
 
 	int (*set_sdw_stream)(struct snd_soc_dai *dai,
 			void *stream, int direction);
+	void *(*get_sdw_stream)(struct snd_soc_dai *dai, int direction);
 	/*
 	 * DAI digital mute - optional.
 	 * Called by soc-core to minimise any pops.
@@ -385,4 +386,13 @@  static inline int snd_soc_dai_set_sdw_stream(struct snd_soc_dai *dai,
 		return -ENOTSUPP;
 }
 
+static inline void *snd_soc_dai_get_sdw_stream(struct snd_soc_dai *dai, int direction)
+{
+	if (dai->driver->ops->get_sdw_stream)
+		return dai->driver->ops->get_sdw_stream(dai, direction);
+	else
+		return NULL;
+
+}
+
 #endif