asoc: wcd937x: use swr device wakeup api

Use device wakeup api exposed by soundwire to
vote and unvote for soundwire master for mbhc
operations.

Change-Id: Id83c8d3fb2eb351133790f69af56e4981bcac543
Signed-off-by: Ramprasad Katkam <[email protected]>

asoc/codecs/wcd937x/internal.h

@@ -70,7 +70,6 @@ struct wcd937x_priv {
 	struct codec_port_info
 			rx_port_mapping[MAX_PORT][MAX_CH_PER_PORT];
 	struct regulator_bulk_data *supplies;
-
 	struct notifier_block nblock;
 	/* wcd callback to bolero */
 	void *handle;
@@ -78,7 +77,7 @@ struct wcd937x_priv {
 	int (*register_notifier)(void *handle,
 				struct notifier_block *nblock,
 				bool enable);
-
+	int (*wakeup)(void *handle, bool enable);
 	u32 version;
 	/* Entry for version info */
 	struct snd_info_entry *entry;

asoc/codecs/wcd937x/wcd937x-mbhc.c

@@ -240,6 +240,10 @@ static void wcd937x_mbhc_program_btn_thr(struct snd_soc_component *component,
 
 static bool wcd937x_mbhc_lock_sleep(struct wcd_mbhc *mbhc, bool lock)
 {
+	struct snd_soc_component *component = mbhc->component;
+	struct wcd937x_priv *wcd937x = dev_get_drvdata(component->dev);
+
+	wcd937x->wakeup((void*)wcd937x, lock);
 	return true;
 }
 

asoc/codecs/wcd937x/wcd937x.c

@@ -2426,6 +2426,25 @@ struct wcd937x_pdata *wcd937x_populate_dt_data(struct device *dev)
 	return pdata;
 }
 
+static int wcd937x_wakeup(void *handle, bool enable)
+{
+	struct wcd937x_priv *priv;
+
+	if (!handle) {
+		pr_err("%s: NULL handle\n", __func__);
+		return -EINVAL;
+	}
+	priv = (struct wcd937x_priv *)handle;
+	if (!priv->tx_swr_dev) {
+		pr_err("%s: tx swr dev is NULL\n", __func__);
+		return -EINVAL;
+	}
+	if (enable)
+		return swr_device_wakeup_vote(priv->tx_swr_dev);
+	else
+		return swr_device_wakeup_unvote(priv->tx_swr_dev);
+}
+
 static int wcd937x_bind(struct device *dev)
 {
 	int ret = 0, i = 0;
@@ -2495,6 +2514,7 @@ static int wcd937x_bind(struct device *dev)
 	 * as per HW requirement.
 	 */
 	usleep_range(5000, 5010);
+	wcd937x->wakeup = wcd937x_wakeup;
 
 	ret = component_bind_all(dev, wcd937x);
 	if (ret) {