On Wed, 23 May 2018 19:08:48 +0300 Claudiu Beznea <[email protected]> wrote:
> Implement suspend/resume hooks. > > Signed-off-by: Claudiu Beznea <[email protected]> > --- > drivers/mtd/spi-nor/atmel-quadspi.c | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/drivers/mtd/spi-nor/atmel-quadspi.c > b/drivers/mtd/spi-nor/atmel-quadspi.c > index 6c5708bacad8..85d7610fb920 100644 > --- a/drivers/mtd/spi-nor/atmel-quadspi.c > +++ b/drivers/mtd/spi-nor/atmel-quadspi.c > @@ -737,6 +737,28 @@ static int atmel_qspi_remove(struct platform_device > *pdev) > return 0; > } > > +#ifdef CONFIG_PM_SLEEP > +static int atmel_qspi_suspend(struct device *dev) > +{ > + struct atmel_qspi *aq = dev_get_drvdata(dev); > + > + clk_disable_unprepare(aq->clk); > + > + return 0; > +} > + > +static int atmel_qspi_resume(struct device *dev) > +{ > + struct atmel_qspi *aq = dev_get_drvdata(dev); > + > + clk_prepare_enable(aq->clk); > + > + return atmel_qspi_init(aq); > +} > +#endif You can avoid this #ifdef section if you use the __maybe_unused specifier: static __maybe_unused int atmel_qspi_suspend(struct device *dev) ... > + > +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 +771,7 @@ 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,
