ASoC: Intel: byt-rt5640: Add quirk for Dell Venue 8 Pro tablet

It was found with help of Jan-Michael Brummer <jan.brummer@tabos.org> that
Dell Venue 8 Pro tablet has a digital microphone connected to DMIC2
interface of the RT564x.

This patch adds a DAPM route to DMIC2 and a quirk using it for that tablet.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reported-by: Jan-Michael Brummer <jan.brummer@tabos.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/sound/soc/intel/byt-rt5640.c b/sound/soc/intel/byt-rt5640.c
index 8392c160d9e2..a9619b4201f9 100644
--- a/sound/soc/intel/byt-rt5640.c
+++ b/sound/soc/intel/byt-rt5640.c
@@ -49,6 +49,10 @@ static const struct snd_soc_dapm_route byt_rt5640_intmic_dmic1_map[] = {
         {"DMIC1", NULL, "Internal Mic"},
 };
 
+static const struct snd_soc_dapm_route byt_rt5640_intmic_dmic2_map[] = {
+        {"DMIC2", NULL, "Internal Mic"},
+};
+
 static const struct snd_soc_dapm_route byt_rt5640_intmic_in1_map[] = {
         {"Internal Mic", NULL, "MICBIAS1"},
         {"IN1P", NULL, "Internal Mic"},
@@ -56,6 +60,7 @@ static const struct snd_soc_dapm_route byt_rt5640_intmic_in1_map[] = {
 
 enum {
         BYT_RT5640_DMIC1_MAP,
+        BYT_RT5640_DMIC2_MAP,
         BYT_RT5640_IN1_MAP,
 };
 
@@ -111,6 +116,15 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
                 },
                 .driver_data = (unsigned long *)BYT_RT5640_IN1_MAP,
         },
+        {
+                .callback = byt_rt5640_quirk_cb,
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "DellInc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Venue 8 Pro 5830"),
+                },
+                .driver_data = (unsigned long *)(BYT_RT5640_DMIC2_MAP |
+                                                 BYT_RT5640_DMIC_EN),
+        },
         {}
 };
 
@@ -138,6 +152,10 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
                 custom_map = byt_rt5640_intmic_in1_map;
                 num_routes = ARRAY_SIZE(byt_rt5640_intmic_in1_map);
                 break;
+        case BYT_RT5640_DMIC2_MAP:
+                custom_map = byt_rt5640_intmic_dmic2_map;
+                num_routes = ARRAY_SIZE(byt_rt5640_intmic_dmic2_map);
+                break;
         default:
                 custom_map = byt_rt5640_intmic_dmic1_map;
                 num_routes = ARRAY_SIZE(byt_rt5640_intmic_dmic1_map);