[PATCH] ASoC: AMD: Set constraints for DMIC and MAX98357a codec

From: Akshu Agrawal
Date: Tue Aug 21 2018 - 02:55:05 EST


We support dual channel, 48Khz. This constraint was set only for
da7219. It is being extended to DMIC and MAX98357a.

Signed-off-by: Akshu Agrawal <akshu.agrawal@xxxxxxx>
Reviewed-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
sound/soc/amd/acp-da7219-max98357a.c | 33 ++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)

diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c
index 8e3275a96a82..95c5701e2a30 100644
--- a/sound/soc/amd/acp-da7219-max98357a.c
+++ b/sound/soc/amd/acp-da7219-max98357a.c
@@ -162,10 +162,21 @@ static void cz_da7219_shutdown(struct snd_pcm_substream *substream)

static int cz_max_startup(struct snd_pcm_substream *substream)
{
+ struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *card = rtd->card;
struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);

+ /*
+ * On this platform for PCM device we support stereo
+ */
+
+ runtime->hw.channels_max = DUAL_CHANNEL;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_channels);
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+
machine->i2s_instance = I2S_BT_INSTANCE;
return da7219_clk_enable(substream);
}
@@ -177,20 +188,42 @@ static void cz_max_shutdown(struct snd_pcm_substream *substream)

static int cz_dmic0_startup(struct snd_pcm_substream *substream)
{
+ struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *card = rtd->card;
struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);

+ /*
+ * On this platform for PCM device we support stereo
+ */
+
+ runtime->hw.channels_max = DUAL_CHANNEL;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_channels);
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+
machine->i2s_instance = I2S_BT_INSTANCE;
return da7219_clk_enable(substream);
}

static int cz_dmic1_startup(struct snd_pcm_substream *substream)
{
+ struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *card = rtd->card;
struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);

+ /*
+ * On this platform for PCM device we support stereo
+ */
+
+ runtime->hw.channels_max = DUAL_CHANNEL;
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraints_channels);
+ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraints_rates);
+
machine->i2s_instance = I2S_SP_INSTANCE;
machine->capture_channel = CAP_CHANNEL0;
return da7219_clk_enable(substream);
--
2.18.0