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

[Akshu Agrawal]

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.agra...@amd.com>
---
 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 066d5489..cf2f648 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);
-- 
1.9.1