On 2020/4/13 下午4:09, Brent Lu wrote:
Implement a constrain to exclude 3-channel capture since only 2 and 4 channel capture are supported on the platform.
The patch looks good to me, except that the subject seems unrelated? you are changing the channel number, not the sample rate?
Thanks, ~Keyon
Signed-off-by: Brent Lu brent.lu@intel.com
sound/soc/intel/boards/bdw-rt5650.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/sound/soc/intel/boards/bdw-rt5650.c b/sound/soc/intel/boards/bdw-rt5650.c index af2f502..eedbdad 100644 --- a/sound/soc/intel/boards/bdw-rt5650.c +++ b/sound/soc/intel/boards/bdw-rt5650.c @@ -83,6 +83,36 @@ static struct snd_soc_jack_pin mic_jack_pin = { .mask = SND_JACK_MICROPHONE, };
+static const unsigned int channels[] = {
- 2, 4,
+};
+static const struct snd_pcm_hw_constraint_list constraints_channels = {
- .count = ARRAY_SIZE(channels),
- .list = channels,
- .mask = 0,
+};
+static int bdw_fe_startup(struct snd_pcm_substream *substream) +{
- struct snd_pcm_runtime *runtime = substream->runtime;
- /*
* On this platform for PCM device we support,* 2 or 4 channel capture*/- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
snd_pcm_hw_constraint_list(runtime, 0,SNDRV_PCM_HW_PARAM_CHANNELS,&constraints_channels);- return 0;
+}
+static const struct snd_soc_ops bdw_rt5650_fe_ops = {
- .startup = bdw_fe_startup,
+};
- static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params) {
@@ -234,6 +264,7 @@ static struct snd_soc_dai_link bdw_rt5650_dais[] = { .name = "System PCM", .stream_name = "System Playback", .dynamic = 1,
.ops = &bdw_rt5650_fe_ops,