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ASoC: fsl_xcvr: Improve suspend/resume flow in fsl_xcvr_trigger()

Message ID 20240628094354.780720-1-chancel.liu@nxp.com
State Accepted
Commit c288f0a1c08efa65f9e3bb7954eb3cefb966c97d
Headers show
Series ASoC: fsl_xcvr: Improve suspend/resume flow in fsl_xcvr_trigger() | expand

Commit Message

Chancel Liu June 28, 2024, 9:43 a.m. UTC 
In the current flow all interrupts are disabled in runtime suspend
phase. However interrupts enablement only exists in fsl_xcvr_prepare().
After resume fsl_xcvr_prepare() may not be called so it will cause all
interrupts still disabled even if resume from suspend. Interrupts
should be explictily enabled after resume.

Also, DPATH reset setting only exists in fsl_xcvr_prepare(). After
resume from suspend DPATH should be reset otherwise there'll be channel
swap issue.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
 sound/soc/fsl/fsl_xcvr.c | 43 +++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 20 deletions(-)

Comments

Shengjiu Wang July 3, 2024, 9:12 a.m. UTC | #1 
On Fri, Jun 28, 2024 at 5:44 PM Chancel Liu <chancel.liu@nxp.com> wrote:
>
> In the current flow all interrupts are disabled in runtime suspend
> phase. However interrupts enablement only exists in fsl_xcvr_prepare().
> After resume fsl_xcvr_prepare() may not be called so it will cause all
> interrupts still disabled even if resume from suspend. Interrupts
> should be explictily enabled after resume.
>
> Also, DPATH reset setting only exists in fsl_xcvr_prepare(). After
> resume from suspend DPATH should be reset otherwise there'll be channel
> swap issue.
>
> Signed-off-by: Chancel Liu <chancel.liu@nxp.com>

Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>

Best regards
Shengjiu Wang
> ---
>  sound/soc/fsl/fsl_xcvr.c | 43 +++++++++++++++++++++-------------------
>  1 file changed, 23 insertions(+), 20 deletions(-)
>
> diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
> index 337da46a2f90..bf9a4e90978e 100644
> --- a/sound/soc/fsl/fsl_xcvr.c
> +++ b/sound/soc/fsl/fsl_xcvr.c
> @@ -529,16 +529,6 @@ static int fsl_xcvr_prepare(struct snd_pcm_substream *substream,
>                 break;
>         }
>
> -       ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
> -                                FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL);
> -       if (ret < 0) {
> -               dev_err(dai->dev, "Error while setting IER0: %d\n", ret);
> -               return ret;
> -       }
> -
> -       /* set DPATH RESET */
> -       m_ctl |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx);
> -       v_ctl |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx);
>         ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, m_ctl, v_ctl);
>         if (ret < 0) {
>                 dev_err(dai->dev, "Error while setting EXT_CTRL: %d\n", ret);
> @@ -679,6 +669,15 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
>         case SNDRV_PCM_TRIGGER_START:
>         case SNDRV_PCM_TRIGGER_RESUME:
>         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
> +               /* set DPATH RESET */
> +               ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL,
> +                                        FSL_XCVR_EXT_CTRL_DPTH_RESET(tx),
> +                                        FSL_XCVR_EXT_CTRL_DPTH_RESET(tx));
> +               if (ret < 0) {
> +                       dev_err(dai->dev, "Failed to set DPATH RESET: %d\n", ret);
> +                       return ret;
> +               }
> +
>                 if (tx) {
>                         switch (xcvr->mode) {
>                         case FSL_XCVR_MODE_EARC:
> @@ -711,6 +710,13 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
>                         return ret;
>                 }
>
> +               ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
> +                                        FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL);
> +               if (ret < 0) {
> +                       dev_err(dai->dev, "Error while setting IER0: %d\n", ret);
> +                       return ret;
> +               }
> +
>                 /* clear DPATH RESET */
>                 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL,
>                                          FSL_XCVR_EXT_CTRL_DPTH_RESET(tx),
> @@ -733,6 +739,13 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
>                         return ret;
>                 }
>
> +               ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
> +                                        FSL_XCVR_IRQ_EARC_ALL, 0);
> +               if (ret < 0) {
> +                       dev_err(dai->dev, "Failed to clear IER0: %d\n", ret);
> +                       return ret;
> +               }
> +
>                 if (tx) {
>                         switch (xcvr->mode) {
>                         case FSL_XCVR_MODE_SPDIF:
> @@ -1411,16 +1424,6 @@ static int fsl_xcvr_runtime_suspend(struct device *dev)
>         struct fsl_xcvr *xcvr = dev_get_drvdata(dev);
>         int ret;
>
> -       /*
> -        * Clear interrupts, when streams starts or resumes after
> -        * suspend, interrupts are enabled in prepare(), so no need
> -        * to enable interrupts in resume().
> -        */
> -       ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
> -                                FSL_XCVR_IRQ_EARC_ALL, 0);
> -       if (ret < 0)
> -               dev_err(dev, "Failed to clear IER0: %d\n", ret);
> -
>         if (!xcvr->soc_data->spdif_only) {
>                 /* Assert M0+ reset */
>                 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL,
> --
> 2.43.0
>
Mark Brown July 3, 2024, 4:30 p.m. UTC | #2 
On Fri, 28 Jun 2024 18:43:54 +0900, Chancel Liu wrote:
> In the current flow all interrupts are disabled in runtime suspend
> phase. However interrupts enablement only exists in fsl_xcvr_prepare().
> After resume fsl_xcvr_prepare() may not be called so it will cause all
> interrupts still disabled even if resume from suspend. Interrupts
> should be explictily enabled after resume.
> 
> Also, DPATH reset setting only exists in fsl_xcvr_prepare(). After
> resume from suspend DPATH should be reset otherwise there'll be channel
> swap issue.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: fsl_xcvr: Improve suspend/resume flow in fsl_xcvr_trigger()
      commit: c288f0a1c08efa65f9e3bb7954eb3cefb966c97d

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark
diff mbox series

Patch

diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index 337da46a2f90..bf9a4e90978e 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -529,16 +529,6 @@  static int fsl_xcvr_prepare(struct snd_pcm_substream *substream,
 		break;
 	}
 
-	ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
-				 FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL);
-	if (ret < 0) {
-		dev_err(dai->dev, "Error while setting IER0: %d\n", ret);
-		return ret;
-	}
-
-	/* set DPATH RESET */
-	m_ctl |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx);
-	v_ctl |= FSL_XCVR_EXT_CTRL_DPTH_RESET(tx);
 	ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, m_ctl, v_ctl);
 	if (ret < 0) {
 		dev_err(dai->dev, "Error while setting EXT_CTRL: %d\n", ret);
@@ -679,6 +669,15 @@  static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		/* set DPATH RESET */
+		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL,
+					 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx),
+					 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx));
+		if (ret < 0) {
+			dev_err(dai->dev, "Failed to set DPATH RESET: %d\n", ret);
+			return ret;
+		}
+
 		if (tx) {
 			switch (xcvr->mode) {
 			case FSL_XCVR_MODE_EARC:
@@ -711,6 +710,13 @@  static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 			return ret;
 		}
 
+		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
+					 FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL);
+		if (ret < 0) {
+			dev_err(dai->dev, "Error while setting IER0: %d\n", ret);
+			return ret;
+		}
+
 		/* clear DPATH RESET */
 		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL,
 					 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx),
@@ -733,6 +739,13 @@  static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 			return ret;
 		}
 
+		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
+					 FSL_XCVR_IRQ_EARC_ALL, 0);
+		if (ret < 0) {
+			dev_err(dai->dev, "Failed to clear IER0: %d\n", ret);
+			return ret;
+		}
+
 		if (tx) {
 			switch (xcvr->mode) {
 			case FSL_XCVR_MODE_SPDIF:
@@ -1411,16 +1424,6 @@  static int fsl_xcvr_runtime_suspend(struct device *dev)
 	struct fsl_xcvr *xcvr = dev_get_drvdata(dev);
 	int ret;
 
-	/*
-	 * Clear interrupts, when streams starts or resumes after
-	 * suspend, interrupts are enabled in prepare(), so no need
-	 * to enable interrupts in resume().
-	 */
-	ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
-				 FSL_XCVR_IRQ_EARC_ALL, 0);
-	if (ret < 0)
-		dev_err(dev, "Failed to clear IER0: %d\n", ret);
-
 	if (!xcvr->soc_data->spdif_only) {
 		/* Assert M0+ reset */
 		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL,