diff mbox series

[V3] ASoC: add a flag to reverse the stop sequence

Message ID 20210708175529.13313-1-vijendar.mukunda@amd.com
State New
Headers show
Series [V3] ASoC: add a flag to reverse the stop sequence | expand

Commit Message

Vijendar Mukunda July 8, 2021, 5:55 p.m. UTC 
From: Vijendar Mukunda <Vijendar.Mukunda@amd.com>

On stream stop, currently CPU DAI stop sequence invoked first
followed by DMA. For Few platforms, it is required to stop the
DMA first before stopping CPU DAI.

For Stoneyridge platform, it is required to invoke DMA driver stop
first rather than invoking DWC I2S controller stop.
Introduced new flag in dai_link structure for reordering stop sequence.
Based on flag check, ASoC core will re-order the stop sequence.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
---
v2 -> v3: moved "stop_dma_first" flag from card structure
	  to dai_link structure and modified code to use
          "stop_dma_first" flag.
v1 -> v2: renamed flag as "stop_dma_fist"
          fixed build error by removing extra + symbol 
          sound/soc/soc-pcm.c:1019:3: error: expected expression before 'struct'
          1019 | + struct snd_soc_card *card = rtd->card; 

 include/sound/soc.h                  |  6 ++++++
 sound/soc/amd/acp-da7219-max98357a.c |  5 +++++
 sound/soc/soc-pcm.c                  | 22 ++++++++++++++++------
 3 files changed, 27 insertions(+), 6 deletions(-)

Comments

Mark Brown July 15, 2021, 2:17 p.m. UTC | #1 
On Thu, Jul 08, 2021 at 11:25:27PM +0530, Vijendar Mukunda wrote:

>  include/sound/soc.h                  |  6 ++++++
>  sound/soc/amd/acp-da7219-max98357a.c |  5 +++++
>  sound/soc/soc-pcm.c                  | 22 ++++++++++++++++------
>  3 files changed, 27 insertions(+), 6 deletions(-)

This should be two patches, one adding a new feature and the other using
it.
Vijendar Mukunda July 15, 2021, 11:51 p.m. UTC | #2 
On 7/15/21 7:47 PM, Mark Brown wrote:
> On Thu, Jul 08, 2021 at 11:25:27PM +0530, Vijendar Mukunda wrote:
> 
>>  include/sound/soc.h                  |  6 ++++++
>>  sound/soc/amd/acp-da7219-max98357a.c |  5 +++++
>>  sound/soc/soc-pcm.c                  | 22 ++++++++++++++++------
>>  3 files changed, 27 insertions(+), 6 deletions(-)
> 
> This should be two patches, one adding a new feature and the other using
> it.
> 
Will split the patch and post it for review.
diff mbox series

Patch

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 675849d07284..8e6dd8a257c5 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -712,6 +712,12 @@  struct snd_soc_dai_link {
 	/* Do not create a PCM for this DAI link (Backend link) */
 	unsigned int ignore:1;
 
+	/* This flag will reorder stop sequence. By enabling this flag
+	 * DMA controller stop sequence will be invoked first followed by
+	 * CPU DAI driver stop sequence
+	 */
+	unsigned int stop_dma_first:1;
+
 #ifdef CONFIG_SND_SOC_TOPOLOGY
 	struct snd_soc_dobj dobj; /* For topology */
 #endif
diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c
index 84e3906abd4f..9449fb40a956 100644
--- a/sound/soc/amd/acp-da7219-max98357a.c
+++ b/sound/soc/amd/acp-da7219-max98357a.c
@@ -576,6 +576,7 @@  static struct snd_soc_dai_link cz_dai_5682_98357[] = {
 				| SND_SOC_DAIFMT_CBM_CFM,
 		.init = cz_rt5682_init,
 		.dpcm_playback = 1,
+		.stop_dma_first = 1,
 		.ops = &cz_rt5682_play_ops,
 		SND_SOC_DAILINK_REG(designware1, rt5682, platform),
 	},
@@ -585,6 +586,7 @@  static struct snd_soc_dai_link cz_dai_5682_98357[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 				| SND_SOC_DAIFMT_CBM_CFM,
 		.dpcm_capture = 1,
+		.stop_dma_first = 1,
 		.ops = &cz_rt5682_cap_ops,
 		SND_SOC_DAILINK_REG(designware2, rt5682, platform),
 	},
@@ -594,6 +596,7 @@  static struct snd_soc_dai_link cz_dai_5682_98357[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 				| SND_SOC_DAIFMT_CBM_CFM,
 		.dpcm_playback = 1,
+		.stop_dma_first = 1,
 		.ops = &cz_rt5682_max_play_ops,
 		SND_SOC_DAILINK_REG(designware3, mx, platform),
 	},
@@ -604,6 +607,7 @@  static struct snd_soc_dai_link cz_dai_5682_98357[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 				| SND_SOC_DAIFMT_CBM_CFM,
 		.dpcm_capture = 1,
+		.stop_dma_first = 1,
 		.ops = &cz_rt5682_dmic0_cap_ops,
 		SND_SOC_DAILINK_REG(designware3, adau, platform),
 	},
@@ -614,6 +618,7 @@  static struct snd_soc_dai_link cz_dai_5682_98357[] = {
 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 				| SND_SOC_DAIFMT_CBM_CFM,
 		.dpcm_capture = 1,
+		.stop_dma_first = 1,
 		.ops = &cz_rt5682_dmic1_cap_ops,
 		SND_SOC_DAILINK_REG(designware2, adau, platform),
 	},
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 46513bb97904..d1c570ca21ea 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1015,6 +1015,7 @@  static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
 
 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 {
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	int ret = -EINVAL, _ret = 0;
 	int rollback = 0;
 
@@ -1055,14 +1056,23 @@  static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
-		if (ret < 0)
-			break;
+		if (rtd->dai_link->stop_dma_first) {
+			ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
+			if (ret < 0)
+				break;
 
-		ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
-		if (ret < 0)
-			break;
+			ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
+			if (ret < 0)
+				break;
+		} else {
+			ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback);
+			if (ret < 0)
+				break;
 
+			ret = snd_soc_pcm_component_trigger(substream, cmd, rollback);
+			if (ret < 0)
+				break;
+		}
 		ret = snd_soc_link_trigger(substream, cmd, rollback);
 		break;
 	}