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@intel.com --- sound/soc/intel/boards/skl_nau88l25_max98357a.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/sound/soc/intel/boards/skl_nau88l25_max98357a.c b/sound/soc/intel/boards/skl_nau88l25_max98357a.c index fc3f475..afc6f74 100644 --- a/sound/soc/intel/boards/skl_nau88l25_max98357a.c +++ b/sound/soc/intel/boards/skl_nau88l25_max98357a.c @@ -23,12 +23,15 @@ #include <sound/soc.h> #include "../../codecs/nau8825.h" #include "../../codecs/hdac_hdmi.h" +#include "../skylake/skl.h"
#define SKL_NUVOTON_CODEC_DAI "nau8825-hifi" #define SKL_MAXIM_CODEC_DAI "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;
struct skl_hdmi_pcm { struct list_head head; @@ -339,7 +342,7 @@ 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; @@ -357,13 +360,23 @@ 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); + dmic_constraints);
return snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); @@ -624,6 +637,7 @@ static struct snd_soc_card skylake_audio_card = { static int skylake_audio_probe(struct platform_device *pdev) { struct skl_nau8825_private *ctx; + struct skl_machine_pdata *pdata;
ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_ATOMIC); if (!ctx) @@ -634,6 +648,11 @@ static int skylake_audio_probe(struct platform_device *pdev) skylake_audio_card.dev = &pdev->dev; snd_soc_card_set_drvdata(&skylake_audio_card, ctx);
+ 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); }