Re: [PATCH v2] mtd: atmel-quadspi: add suspend/resume hooks

From: Boris Brezillon
Date: Mon Jun 18 2018 - 05:49:38 EST


Hi Claudiu,

The subject prefix should be "mtd: spi-nor: atmel-quadspi: ". No need
to send a new version just for that, I'll fix it when applying the
patch.

Looks good otherwise. Marek, any objection? If not, can you add your
Acked-by?

Thanks,

Boris

On Mon, 4 Jun 2018 11:46:33 +0300
Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx> wrote:

> Implement suspend/resume hooks.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
> ---
>
> Changes in v2:
> - use __maybe_unused instead of #ifdef CONFIG_PM_SLEEP
>
> drivers/mtd/spi-nor/atmel-quadspi.c | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/drivers/mtd/spi-nor/atmel-quadspi.c b/drivers/mtd/spi-nor/atmel-quadspi.c
> index 6c5708bacad8..ceaaef47f02e 100644
> --- a/drivers/mtd/spi-nor/atmel-quadspi.c
> +++ b/drivers/mtd/spi-nor/atmel-quadspi.c
> @@ -737,6 +737,26 @@ static int atmel_qspi_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static int __maybe_unused atmel_qspi_suspend(struct device *dev)
> +{
> + struct atmel_qspi *aq = dev_get_drvdata(dev);
> +
> + clk_disable_unprepare(aq->clk);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused atmel_qspi_resume(struct device *dev)
> +{
> + struct atmel_qspi *aq = dev_get_drvdata(dev);
> +
> + clk_prepare_enable(aq->clk);
> +
> + return atmel_qspi_init(aq);
> +}
> +
> +static SIMPLE_DEV_PM_OPS(atmel_qspi_pm_ops, atmel_qspi_suspend,
> + atmel_qspi_resume);
>
> static const struct of_device_id atmel_qspi_dt_ids[] = {
> { .compatible = "atmel,sama5d2-qspi" },
> @@ -749,6 +769,7 @@ static struct platform_driver atmel_qspi_driver = {
> .driver = {
> .name = "atmel_qspi",
> .of_match_table = atmel_qspi_dt_ids,
> + .pm = &atmel_qspi_pm_ops,
> },
> .probe = atmel_qspi_probe,
> .remove = atmel_qspi_remove,