ASoC: qcom: Fix for DMA interrupt clear reg overwriting

The DMA interrupt clear register overwritten during
simultaneous playback and capture in lpass platform
interrupt handler. It's causing playback or capture stuck
in similtaneous plaback on speaker and capture on dmic test.
Update appropriate reg fields of corresponding channel instead
of entire register write.

Fixes: commit c5c8635a04 ("ASoC: qcom: Add LPASS platform driver")

Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210609072310.26099-1-srivasam@codeaurora.org
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/lpass-platform.c

@@ -526,7 +526,7 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
 			return -EINVAL;
 		}
 
-		ret = regmap_write(map, reg_irqclr, val_irqclr);
+		ret = regmap_update_bits(map, reg_irqclr, val_irqclr, val_irqclr);
 		if (ret) {
 			dev_err(soc_runtime->dev, "error writing to irqclear reg: %d\n", ret);
 			return ret;
@@ -650,10 +650,11 @@ static irqreturn_t lpass_dma_interrupt_handler(
 	struct lpass_variant *v = drvdata->variant;
 	irqreturn_t ret = IRQ_NONE;
 	int rv;
-	unsigned int reg = 0, val = 0;
+	unsigned int reg, val, mask;
 	struct regmap *map;
 	unsigned int dai_id = cpu_dai->driver->id;
 
+	mask = LPAIF_IRQ_ALL(chan);
 	switch (dai_id) {
 	case LPASS_DP_RX:
 		map = drvdata->hdmiif_map;
@@ -676,8 +677,7 @@ static irqreturn_t lpass_dma_interrupt_handler(
 	return -EINVAL;
 	}
 	if (interrupts & LPAIF_IRQ_PER(chan)) {
-
-		rv = regmap_write(map, reg, LPAIF_IRQ_PER(chan) | val);
+		rv = regmap_update_bits(map, reg, mask, (LPAIF_IRQ_PER(chan) | val));
 		if (rv) {
 			dev_err(soc_runtime->dev,
 				"error writing to irqclear reg: %d\n", rv);
@@ -688,7 +688,7 @@ static irqreturn_t lpass_dma_interrupt_handler(
 	}
 
 	if (interrupts & LPAIF_IRQ_XRUN(chan)) {
-		rv = regmap_write(map, reg, LPAIF_IRQ_XRUN(chan) | val);
+		rv = regmap_update_bits(map, reg, mask, (LPAIF_IRQ_XRUN(chan) | val));
 		if (rv) {
 			dev_err(soc_runtime->dev,
 				"error writing to irqclear reg: %d\n", rv);
@@ -700,7 +700,7 @@ static irqreturn_t lpass_dma_interrupt_handler(
 	}
 
 	if (interrupts & LPAIF_IRQ_ERR(chan)) {
-		rv = regmap_write(map, reg, LPAIF_IRQ_ERR(chan) | val);
+		rv = regmap_update_bits(map, reg, mask, (LPAIF_IRQ_ERR(chan) | val));
 		if (rv) {
 			dev_err(soc_runtime->dev,
 				"error writing to irqclear reg: %d\n", rv);