asoc: codecs: Bail out from clock enable routine during SSR

When SSR happens, use dev_up flag in codec
to bail out from clock enablement routine.
During interrupt processing if clock enable fails during
SSR, exit isr routine without disabling clock.

Change-Id: Ie2b56521daa70790d6ef53a06c7becc2ee8010a4
Signed-off-by: Aditya Bavanari <[email protected]>

asoc/codecs/bolero/bolero-cdc.c

@@ -638,15 +638,14 @@ static void bolero_ssr_disable(struct device *dev, void *data)
 	struct bolero_priv *priv = data;
 	int macro_idx;
 
-	if (priv->rsc_clk_cb)
-		priv->rsc_clk_cb(priv->clk_dev, BOLERO_MACRO_EVT_SSR_DOWN);
-
 	bolero_cdc_notifier_call(priv, BOLERO_WCD_EVT_PA_OFF_PRE_SSR);
 	regcache_cache_only(priv->regmap, true);
 
 	mutex_lock(&priv->clk_lock);
 	priv->dev_up = false;
 	mutex_unlock(&priv->clk_lock);
+	if (priv->rsc_clk_cb)
+		priv->rsc_clk_cb(priv->clk_dev, BOLERO_MACRO_EVT_SSR_DOWN);
 	/* call ssr event for supported macros */
 	for (macro_idx = START_MACRO; macro_idx < MAX_MACRO; macro_idx++) {
 		if (!priv->macro_params[macro_idx].event_handler)

asoc/codecs/bolero/bolero-clk-rsc.c

@@ -401,7 +401,7 @@ int bolero_clk_rsc_request_clock(struct device *dev,
 	}
 
 	mutex_lock(&priv->rsc_clk_lock);
-	if (!priv->dev_up) {
+	if (!priv->dev_up && enable) {
 		dev_err_ratelimited(priv->dev, "%s: SSR is in progress..\n",
 				__func__);
 		ret = -EINVAL;

soc/swr-mstr-ctrl.c

@@ -241,8 +241,10 @@ static int swrm_clk_request(struct swr_mstr_ctrl *swrm, bool enable)
 
 	mutex_lock(&swrm->clklock);
 	if (enable) {
-		if (!swrm->dev_up)
+		if (!swrm->dev_up) {
+			ret = -ENODEV;
 			goto exit;
+		}
 		swrm->clk_ref_count++;
 		if (swrm->clk_ref_count == 1) {
 			ret = swrm->clk(swrm->handle, true);
@@ -1274,7 +1276,10 @@ static irqreturn_t swr_mstr_interrupt(int irq, void *dev)
 	}
 
 	mutex_lock(&swrm->reslock);
-	swrm_clk_request(swrm, true);
+	if (swrm_clk_request(swrm, true)) {
+		mutex_unlock(&swrm->reslock);
+		goto exit;
+	}
 	mutex_unlock(&swrm->reslock);
 
 	intr_sts = swr_master_read(swrm, SWRM_INTERRUPT_STATUS);
@@ -1420,6 +1425,7 @@ handle_irq:
 	mutex_lock(&swrm->reslock);
 	swrm_clk_request(swrm, false);
 	mutex_unlock(&swrm->reslock);
+exit:
 	swrm_unlock_sleep(swrm);
 	return ret;
 }