Add pm runtime support and move clock handling there.
Close the clocks at suspend to reduce the power consumption.
fsl_esai_suspend is replaced by pm_runtime_force_suspend.
fsl_esai_resume is replaced by pm_runtime_force_resume.
Signed-off-by: Shengjiu Wang <[email protected]>
Acked-by: Nicolin Chen <[email protected]>
---
Changes in v3
-refine the commit comments.
-add acked-by
Changes in v2
-refine the commit comments.
-move regcache_mark_dirty to runtime suspend.
sound/soc/fsl/fsl_esai.c | 141 ++++++++++++++++++++++++++---------------------
1 file changed, 77 insertions(+), 64 deletions(-)
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index c7410bbfd2af..022368c8a074 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
@@ -466,30 +467,6 @@ static int fsl_esai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
- int ret;
-
- /*
- * Some platforms might use the same bit to gate all three or two of
- * clocks, so keep all clocks open/close at the same time for safety
- */
- ret = clk_prepare_enable(esai_priv->coreclk);
- if (ret)
- return ret;
- if (!IS_ERR(esai_priv->spbaclk)) {
- ret = clk_prepare_enable(esai_priv->spbaclk);
- if (ret)
- goto err_spbaclk;
- }
- if (!IS_ERR(esai_priv->extalclk)) {
- ret = clk_prepare_enable(esai_priv->extalclk);
- if (ret)
- goto err_extalck;
- }
- if (!IS_ERR(esai_priv->fsysclk)) {
- ret = clk_prepare_enable(esai_priv->fsysclk);
- if (ret)
- goto err_fsysclk;
- }
if (!dai->active) {
/* Set synchronous mode */
@@ -506,16 +483,6 @@ static int fsl_esai_startup(struct snd_pcm_substream *substream,
return 0;
-err_fsysclk:
- if (!IS_ERR(esai_priv->extalclk))
- clk_disable_unprepare(esai_priv->extalclk);
-err_extalck:
- if (!IS_ERR(esai_priv->spbaclk))
- clk_disable_unprepare(esai_priv->spbaclk);
-err_spbaclk:
- clk_disable_unprepare(esai_priv->coreclk);
-
- return ret;
}
static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
@@ -576,20 +543,6 @@ static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
return 0;
}
-static void fsl_esai_shutdown(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
-
- if (!IS_ERR(esai_priv->fsysclk))
- clk_disable_unprepare(esai_priv->fsysclk);
- if (!IS_ERR(esai_priv->extalclk))
- clk_disable_unprepare(esai_priv->extalclk);
- if (!IS_ERR(esai_priv->spbaclk))
- clk_disable_unprepare(esai_priv->spbaclk);
- clk_disable_unprepare(esai_priv->coreclk);
-}
-
static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
@@ -658,7 +611,6 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
static const struct snd_soc_dai_ops fsl_esai_dai_ops = {
.startup = fsl_esai_startup,
- .shutdown = fsl_esai_shutdown,
.trigger = fsl_esai_trigger,
.hw_params = fsl_esai_hw_params,
.set_sysclk = fsl_esai_set_dai_sysclk,
@@ -947,6 +899,10 @@ static int fsl_esai_probe(struct platform_device *pdev)
return ret;
}
+ pm_runtime_enable(&pdev->dev);
+
+ regcache_cache_only(esai_priv->regmap, true);
+
ret = imx_pcm_dma_init(pdev, IMX_ESAI_DMABUF_SIZE);
if (ret)
dev_err(&pdev->dev, "failed to init imx pcm dma: %d\n", ret);
@@ -954,6 +910,13 @@ static int fsl_esai_probe(struct platform_device *pdev)
return ret;
}
+static int fsl_esai_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
static const struct of_device_id fsl_esai_dt_ids[] = {
{ .compatible = "fsl,imx35-esai", },
{ .compatible = "fsl,vf610-esai", },
@@ -961,22 +924,35 @@ static int fsl_esai_probe(struct platform_device *pdev)
};
MODULE_DEVICE_TABLE(of, fsl_esai_dt_ids);
-#ifdef CONFIG_PM_SLEEP
-static int fsl_esai_suspend(struct device *dev)
-{
- struct fsl_esai *esai = dev_get_drvdata(dev);
-
- regcache_cache_only(esai->regmap, true);
- regcache_mark_dirty(esai->regmap);
-
- return 0;
-}
-
-static int fsl_esai_resume(struct device *dev)
+#ifdef CONFIG_PM
+static int fsl_esai_runtime_resume(struct device *dev)
{
struct fsl_esai *esai = dev_get_drvdata(dev);
int ret;
+ /*
+ * Some platforms might use the same bit to gate all three or two of
+ * clocks, so keep all clocks open/close at the same time for safety
+ */
+ ret = clk_prepare_enable(esai->coreclk);
+ if (ret)
+ return ret;
+ if (!IS_ERR(esai->spbaclk)) {
+ ret = clk_prepare_enable(esai->spbaclk);
+ if (ret)
+ goto err_spbaclk;
+ }
+ if (!IS_ERR(esai->extalclk)) {
+ ret = clk_prepare_enable(esai->extalclk);
+ if (ret)
+ goto err_extalclk;
+ }
+ if (!IS_ERR(esai->fsysclk)) {
+ ret = clk_prepare_enable(esai->fsysclk);
+ if (ret)
+ goto err_fsysclk;
+ }
+
regcache_cache_only(esai->regmap, false);
/* FIFO reset for safety */
@@ -987,22 +963,59 @@ static int fsl_esai_resume(struct device *dev)
ret = regcache_sync(esai->regmap);
if (ret)
- return ret;
+ goto err_regcache_sync;
/* FIFO reset done */
regmap_update_bits(esai->regmap, REG_ESAI_TFCR, ESAI_xFCR_xFR, 0);
regmap_update_bits(esai->regmap, REG_ESAI_RFCR, ESAI_xFCR_xFR, 0);
return 0;
+
+err_regcache_sync:
+ if (!IS_ERR(esai->fsysclk))
+ clk_disable_unprepare(esai->fsysclk);
+err_fsysclk:
+ if (!IS_ERR(esai->extalclk))
+ clk_disable_unprepare(esai->extalclk);
+err_extalclk:
+ if (!IS_ERR(esai->spbaclk))
+ clk_disable_unprepare(esai->spbaclk);
+err_spbaclk:
+ clk_disable_unprepare(esai->coreclk);
+
+ return ret;
}
-#endif /* CONFIG_PM_SLEEP */
+
+static int fsl_esai_runtime_suspend(struct device *dev)
+{
+ struct fsl_esai *esai = dev_get_drvdata(dev);
+
+ regcache_cache_only(esai->regmap, true);
+ regcache_mark_dirty(esai->regmap);
+
+ if (!IS_ERR(esai->fsysclk))
+ clk_disable_unprepare(esai->fsysclk);
+ if (!IS_ERR(esai->extalclk))
+ clk_disable_unprepare(esai->extalclk);
+ if (!IS_ERR(esai->spbaclk))
+ clk_disable_unprepare(esai->spbaclk);
+ clk_disable_unprepare(esai->coreclk);
+
+ return 0;
+}
+#endif /* CONFIG_PM */
static const struct dev_pm_ops fsl_esai_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(fsl_esai_suspend, fsl_esai_resume)
+ SET_RUNTIME_PM_OPS(fsl_esai_runtime_suspend,
+ fsl_esai_runtime_resume,
+ NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
};
static struct platform_driver fsl_esai_driver = {
.probe = fsl_esai_probe,
+ .remove = fsl_esai_remove,
.driver = {
.name = "fsl-esai-dai",
.pm = &fsl_esai_pm_ops,
--
1.9.1
On Mon, Apr 22, 2019 at 02:31:55AM +0000, S.j. Wang wrote:
> Add pm runtime support and move clock handling there.
> Close the clocks at suspend to reduce the power consumption.
>
> fsl_esai_suspend is replaced by pm_runtime_force_suspend.
> fsl_esai_resume is replaced by pm_runtime_force_resume.
This doesn't apply against current code, please check and resend.
Hi Mark
>
> On Mon, Apr 22, 2019 at 02:31:55AM +0000, S.j. Wang wrote:
> > Add pm runtime support and move clock handling there.
> > Close the clocks at suspend to reduce the power consumption.
> >
> > fsl_esai_suspend is replaced by pm_runtime_force_suspend.
> > fsl_esai_resume is replaced by pm_runtime_force_resume.
>
> This doesn't apply against current code, please check and resend.
Which branch are you using? I tried for-next and for-linus, both
Are successful applied.
Best regards
Wang shengjiu
On Fri, Apr 26, 2019 at 10:51:15AM +0000, S.j. Wang wrote:
> > On Mon, Apr 22, 2019 at 02:31:55AM +0000, S.j. Wang wrote:
> > > Add pm runtime support and move clock handling there.
> > > Close the clocks at suspend to reduce the power consumption.
> > > fsl_esai_suspend is replaced by pm_runtime_force_suspend.
> > > fsl_esai_resume is replaced by pm_runtime_force_resume.
> > This doesn't apply against current code, please check and resend.
> Which branch are you using? I tried for-next and for-linus, both
> Are successful applied.
I'm applying against for-5.2, though if it depends on a patch queued for
5.1 that's fine, I can just merge that up - please just resend. I think
I did try merging 5.1 though...
Hi Mark
> On Fri, Apr 26, 2019 at 10:51:15AM +0000, S.j. Wang wrote:
> > > On Mon, Apr 22, 2019 at 02:31:55AM +0000, S.j. Wang wrote:
> > > > Add pm runtime support and move clock handling there.
> > > > Close the clocks at suspend to reduce the power consumption.
>
> > > > fsl_esai_suspend is replaced by pm_runtime_force_suspend.
> > > > fsl_esai_resume is replaced by pm_runtime_force_resume.
>
> > > This doesn't apply against current code, please check and resend.
>
> > Which branch are you using? I tried for-next and for-linus, both Are
> > successful applied.
>
> I'm applying against for-5.2, though if it depends on a patch queued for
> 5.1 that's fine, I can just merge that up - please just resend. I think I did try
> merging 5.1 though...
I think may be caused by the patch " ASoC: fsl_esai: Fix missing break
in switch statement", so I resend them both base on for-5.2.
best regards
wang shengjiu