Merge branch 'for-5.4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.5

1 files changed, 22 insertions, 11 deletions

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index d7501f88aaa6..48e629ac2d88 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -505,10 +505,20 @@ static int stm32_sai_set_sysclk(struct snd_soc_dai *cpu_dai,
 	if (dir == SND_SOC_CLOCK_OUT && sai->sai_mclk) {
 		ret = regmap_update_bits(sai->regmap, STM_SAI_CR1_REGX,
 					 SAI_XCR1_NODIV,
-					 (unsigned int)~SAI_XCR1_NODIV);
+					 freq ? 0 : SAI_XCR1_NODIV);
 		if (ret < 0)
 			return ret;
 
+		/* Assume shutdown if requested frequency is 0Hz */
+		if (!freq) {
+			/* Release mclk rate only if rate was actually set */
+			if (sai->mclk_rate) {
+				clk_rate_exclusive_put(sai->sai_mclk);
+				sai->mclk_rate = 0;
+			}
+			return 0;
+		}
+
 		/* If master clock is used, set parent clock now */
 		ret = stm32_sai_set_parent_clock(sai, freq);
 		if (ret)
@@ -1093,15 +1103,6 @@ static void stm32_sai_shutdown(struct snd_pcm_substream *substream,
 
 	regmap_update_bits(sai->regmap, STM_SAI_IMR_REGX, SAI_XIMR_MASK, 0);
 
-	regmap_update_bits(sai->regmap, STM_SAI_CR1_REGX, SAI_XCR1_NODIV,
-			   SAI_XCR1_NODIV);
-
-	/* Release mclk rate only if rate was actually set */
-	if (sai->mclk_rate) {
-		clk_rate_exclusive_put(sai->sai_mclk);
-		sai->mclk_rate = 0;
-	}
-
 	clk_disable_unprepare(sai->sai_ck);
 
 	spin_lock_irqsave(&sai->irq_lock, flags);
@@ -1217,6 +1218,16 @@ static int stm32_sai_pcm_process_spdif(struct snd_pcm_substream *substream,
 	return 0;
 }
 
+/* No support of mmap in S/PDIF mode */
+static const struct snd_pcm_hardware stm32_sai_pcm_hw_spdif = {
+	.info = SNDRV_PCM_INFO_INTERLEAVED,
+	.buffer_bytes_max = 8 * PAGE_SIZE,
+	.period_bytes_min = 1024,
+	.period_bytes_max = PAGE_SIZE,
+	.periods_min = 2,
+	.periods_max = 8,
+};
+
 static const struct snd_pcm_hardware stm32_sai_pcm_hw = {
 	.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP,
 	.buffer_bytes_max = 8 * PAGE_SIZE,
@@ -1269,7 +1280,7 @@ static const struct snd_dmaengine_pcm_config stm32_sai_pcm_config = {
 };
 
 static const struct snd_dmaengine_pcm_config stm32_sai_pcm_config_spdif = {
-	.pcm_hardware = &stm32_sai_pcm_hw,
+	.pcm_hardware = &stm32_sai_pcm_hw_spdif,
 	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
 	.process = stm32_sai_pcm_process_spdif,
 };