This machine driver can support 2 or 4 DMIC configuration, so
apply the ch constraint according to driver pdata.
Signed-off-by: Yong Zhi <yong.zhi@xxxxxxxxx>
---
sound/soc/intel/boards/skl_nau88l25_ssm4567.c | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/sound/soc/intel/boards/skl_nau88l25_ssm4567.c b/sound/soc/intel/boards/skl_nau88l25_ssm4567.c
index 73cbddb..d4e174f 100644
--- a/sound/soc/intel/boards/skl_nau88l25_ssm4567.c
+++ b/sound/soc/intel/boards/skl_nau88l25_ssm4567.c
@@ -27,12 +27,15 @@
#include <sound/pcm_params.h>
#include "../../codecs/nau8825.h"
#include "../../codecs/hdac_hdmi.h"
+#include "../skylake/skl.h"
#define SKL_NUVOTON_CODEC_DAI "nau8825-hifi"
#define SKL_SSM_CODEC_DAI "ssm4567-hifi"
+#define DMIC_CH(p) p->list[p->count-1]
static struct snd_soc_jack skylake_headset;
static struct snd_soc_card skylake_audio_card;
+static const struct snd_pcm_hw_constraint_list *dmic_constraints;
enum {
SKL_DPCM_AUDIO_PB = 0,
@@ -325,7 +328,7 @@ static int skylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
{
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
- if (params_channels(params) == 2)
+ if (params_channels(params) == 2 || DMIC_CH(dmic_constraints) == 2)
channels->min = channels->max = 2;
else
channels->min = channels->max = 4;
@@ -363,11 +366,21 @@ static struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
.mask = 0,
};
+static const unsigned int dmic_2ch[] = {
+ 2,
+};
+
+static const struct snd_pcm_hw_constraint_list constraints_dmic_2ch = {
+ .count = ARRAY_SIZE(dmic_2ch),
+ .list = dmic_2ch,
+ .mask = 0,
+};
+
static int skylake_dmic_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
- runtime->hw.channels_max = 4;
+ runtime->hw.channels_max = DMIC_CH(dmic_constraints);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
&constraints_dmic_channels);
@@ -603,8 +616,14 @@ static struct snd_soc_card skylake_audio_card = {
static int skylake_audio_probe(struct platform_device *pdev)
{
+ struct skl_machine_pdata *pdata;
skylake_audio_card.dev = &pdev->dev;
+ pdata = dev_get_drvdata(&pdev->dev);
+ if (pdata)
+ dmic_constraints = pdata->dmic_num == 2 ?
+ &constraints_dmic_2ch : &constraints_dmic_channels;
+
return devm_snd_soc_register_card(&pdev->dev, &skylake_audio_card);
}
--
1.9.1
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