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Subject[PATCH v3 2/3] ASoC: fsl_sai: Add support for runtime pm
Date
Basically the same actions as for system PM, so make use
of pm_runtime_force_suspend/pm_runtime_force_resume.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
sound/soc/fsl/fsl_sai.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index d9df98975cf8..8623b7f882b9 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -9,6 +9,7 @@
#include <linux/dmaengine.h>
#include <linux/module.h>
#include <linux/of_address.h>
+#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/time.h>
@@ -900,6 +901,8 @@ static int fsl_sai_probe(struct platform_device *pdev)

platform_set_drvdata(pdev, sai);

+ pm_runtime_enable(&pdev->dev);
+
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
&fsl_sai_dai, 1);
if (ret)
@@ -911,6 +914,11 @@ static int fsl_sai_probe(struct platform_device *pdev)
return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
}

+static int fsl_sai_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+}
+
static const struct of_device_id fsl_sai_ids[] = {
{ .compatible = "fsl,vf610-sai", },
{ .compatible = "fsl,imx6sx-sai", },
@@ -919,8 +927,8 @@ static const struct of_device_id fsl_sai_ids[] = {
};
MODULE_DEVICE_TABLE(of, fsl_sai_ids);

-#ifdef CONFIG_PM_SLEEP
-static int fsl_sai_suspend(struct device *dev)
+#ifdef CONFIG_PM
+static int fsl_sai_runtime_suspend(struct device *dev)
{
struct fsl_sai *sai = dev_get_drvdata(dev);

@@ -930,7 +938,7 @@ static int fsl_sai_suspend(struct device *dev)
return 0;
}

-static int fsl_sai_resume(struct device *dev)
+static int fsl_sai_runtime_resume(struct device *dev)
{
struct fsl_sai *sai = dev_get_drvdata(dev);

@@ -942,14 +950,18 @@ static int fsl_sai_resume(struct device *dev)
regmap_write(sai->regmap, FSL_SAI_RCSR, 0);
return regcache_sync(sai->regmap);
}
-#endif /* CONFIG_PM_SLEEP */
+#endif /* CONFIG_PM */

static const struct dev_pm_ops fsl_sai_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(fsl_sai_suspend, fsl_sai_resume)
+ SET_RUNTIME_PM_OPS(fsl_sai_runtime_suspend,
+ fsl_sai_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
};

static struct platform_driver fsl_sai_driver = {
.probe = fsl_sai_probe,
+ .remove = fsl_sai_remove,
.driver = {
.name = "fsl-sai",
.pm = &fsl_sai_pm_ops,
--
2.17.1
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