asoc: codecs: Add parent child relation for bolero and tanggu

In bolero and tanggu combination, make bolero parent of tanggu.
Bolero and tanggu can communicate mutually using notifier and
plat_data callback APIs.

Change-Id: Iecd119df7f0ad1ba225c0427f3f42f217146b092
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>

asoc/codecs/wcd937x/internal.h

@@ -74,6 +74,14 @@ struct wcd937x_priv {
 			rx_port_mapping[MAX_PORT][MAX_CH_PER_PORT];
 	struct regulator_bulk_data *supplies;
 
+	struct notifier_block nblock;
+	/* wcd callback to bolero */
+	void *handle;
+	int (*update_wcd_event)(void *handle, u16 event, u32 data);
+	int (*register_notifier)(void *handle,
+				struct notifier_block *nblock,
+				bool enable);
+
 	u32 version;
 	/* Entry for version info */
 	struct snd_info_entry *entry;
@@ -99,6 +107,30 @@ struct wcd937x_pdata {
 	int num_supplies;
 };
 
+struct wcd_ctrl_platform_data {
+	void *handle;
+	int (*update_wcd_event)(void *handle, u16 event, u32 data);
+	int (*register_notifier)(void *handle,
+				 struct notifier_block *nblock,
+				 bool enable);
+};
+
+enum {
+	WCD_RX1,
+	WCD_RX2,
+	WCD_RX3
+};
+
+enum {
+	BOLERO_WCD_EVT_TX_CH_HOLD_CLEAR = 1,
+};
+
+enum {
+	WCD_BOLERO_EVT_RX_MUTE = 1,	/* for RX mute/unmute */
+	WCD_BOLERO_EVT_IMPED_TRUE,	/* for imped true */
+	WCD_BOLERO_EVT_IMPED_FALSE,	/* for imped false */
+};
+
 enum {
 	/* INTR_CTRL_INT_MASK_0 */
 	WCD937X_IRQ_MBHC_BUTTON_RELEASE_DET = 0,