ASoC: Intel: Skylake: Add enum control for mic selection

User may prefer to select data from particular mics. A mic-select module
in DSP allows this selection.

Create possible enum controls to allow user to select a combination of
mics to capture data from. Based on the user selection, parameters are
generated and passed to mic-select module during init.

Signed-off-by: Dharageswari R <dharageswari.r@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-topology.h

@@ -39,6 +39,11 @@
 #define MODULE_MAX_IN_PINS	8
 #define MODULE_MAX_OUT_PINS	8
 
+#define SKL_MIC_CH_SUPPORT	4
+#define SKL_MIC_MAX_CH_SUPPORT	8
+#define SKL_DEFAULT_MIC_SEL_GAIN	0x3FF
+#define SKL_MIC_SEL_SWITCH	0x3
+
 enum skl_channel_index {
 	SKL_CHANNEL_LEFT = 0,
 	SKL_CHANNEL_RIGHT = 1,
@@ -309,6 +314,8 @@ struct skl_module_cfg {
 	u8 dev_type;
 	u8 dma_id;
 	u8 time_slot;
+	u8 dmic_ch_combo_index;
+	u32 dmic_ch_type;
 	u32 params_fixup;
 	u32 converter;
 	u32 vbus_id;
@@ -342,6 +349,19 @@ struct skl_module_deferred_bind {
 	struct list_head node;
 };
 
+struct skl_mic_sel_config {
+	u16 mic_switch;
+	u16 flags;
+	u16 blob[SKL_MIC_MAX_CH_SUPPORT][SKL_MIC_MAX_CH_SUPPORT];
+} __packed;
+
+enum skl_channel {
+	SKL_CH_MONO = 1,
+	SKL_CH_STEREO = 2,
+	SKL_CH_TRIO = 3,
+	SKL_CH_QUATRO = 4,
+};
+
 static inline struct skl *get_skl_ctx(struct device *dev)
 {
 	struct hdac_ext_bus *ebus = dev_get_drvdata(dev);