ASoC: broadwell: add channel constraint (ad18763f) · Commits · 戴 / test

sound/soc/intel/boards/broadwell.c

+26 −0

Original line number	Diff line number	Diff line
		@@ -143,6 +143,31 @@ static int broadwell_rtd_init(struct snd_soc_pcm_runtime *rtd)
		}
		#endif

		static const unsigned int channels[] = {
		2,
		};

		static const struct snd_pcm_hw_constraint_list constraints_channels = {
		.count = ARRAY_SIZE(channels),
		.list = channels,
		.mask = 0,
		};

		static int broadwell_fe_startup(struct snd_pcm_substream *substream)
		{
		struct snd_pcm_runtime *runtime = substream->runtime;

		/* Board supports stereo configuration only */
		runtime->hw.channels_max = 2;
		return snd_pcm_hw_constraint_list(runtime, 0,
		SNDRV_PCM_HW_PARAM_CHANNELS,
		&constraints_channels);
		}

		static const struct snd_soc_ops broadwell_fe_ops = {
		.startup = broadwell_fe_startup,
		};

		SND_SOC_DAILINK_DEF(system,
		DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));

		@@ -180,6 +205,7 @@ static struct snd_soc_dai_link broadwell_rt286_dais[] = {
		.init = broadwell_rtd_init,
		#endif
		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
		.ops = &broadwell_fe_ops,
		.dpcm_playback = 1,
		.dpcm_capture = 1,
		SND_SOC_DAILINK_REG(system, dummy, platform),