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SubjectRe: [PATCH 2/3 v2] ASoC: fsl_sai: Add support for runtime pm
On Sun, Apr 21, 2019 at 07:39:09PM +0000, Daniel Baluta wrote:
> 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>

Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>

Thanks

> ---
> 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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