[alsa-devel] [PATCH 03/17] ASoC: Intel: bytcr_rt5640: enable differential mic quirk
Pierre-Louis Bossart
pierre-louis.bossart at linux.intel.com
Fri Aug 12 23:27:46 CEST 2016
Some Baytrail-CR devices rely on analog mics connected with
differential pairs and not the single-ended default
Add quirk and enable it for T00TAF
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
sound/soc/intel/boards/bytcr_rt5640.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index 421a53c..085e57f 100644
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -41,6 +41,7 @@ enum {
#define BYT_RT5640_MAP(quirk) ((quirk) & 0xff)
#define BYT_RT5640_DMIC_EN BIT(16)
#define BYT_RT5640_MONO_SPEAKER BIT(17)
+#define BYT_RT5640_DIFF_MIC BIT(18) /* defaut is single-ended */
static unsigned long byt_rt5640_quirk = BYT_RT5640_DMIC1_MAP |
BYT_RT5640_DMIC_EN;
@@ -148,7 +149,8 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TAF"),
},
.driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
- BYT_RT5640_MONO_SPEAKER
+ BYT_RT5640_MONO_SPEAKER |
+ BYT_RT5640_DIFF_MIC
),
},
{
@@ -223,6 +225,11 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
if (ret)
return ret;
+ if (byt_rt5640_quirk & BYT_RT5640_DIFF_MIC) {
+ snd_soc_update_bits(codec, RT5640_IN1_IN2, RT5640_IN_DF1,
+ RT5640_IN_DF1);
+ }
+
if (byt_rt5640_quirk & BYT_RT5640_DMIC_EN) {
ret = rt5640_dmic_enable(codec, 0, 0);
if (ret)
--
2.5.0
More information about the Alsa-devel
mailing list