| Message ID | 1478054417-7520-1-git-send-email-wenyou.yang@atmel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Nov 02, 2016 at 10:40:16AM +0800, Wenyou Yang wrote: > Add suspend/resume callback, support the pinctrl sleep state when > the system suspend as well. > > Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> > --- > > drivers/iio/adc/at91_adc.c | 35 +++++++++++++++++++++++++++++++++++ > 1 file changed, 35 insertions(+) > > diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c > index bbdac07..ffa81a1 100644 > --- a/drivers/iio/adc/at91_adc.c > +++ b/drivers/iio/adc/at91_adc.c > @@ -30,6 +30,7 @@ > #include <linux/iio/trigger.h> > #include <linux/iio/trigger_consumer.h> > #include <linux/iio/triggered_buffer.h> > +#include <linux/pinctrl/consumer.h> > > /* Registers */ > #define AT91_ADC_CR 0x00 /* Control Register */ > @@ -1347,6 +1348,39 @@ static int at91_adc_remove(struct platform_device *pdev) > return 0; > } > > +#ifdef CONFIG_PM I would use CONFIG_PM_SLEEP > +static int at91_adc_suspend(struct device *dev) > +{ > + struct iio_dev *idev = platform_get_drvdata(to_platform_device(dev)); > + struct at91_adc_state *st = iio_priv(idev); > + > + pinctrl_pm_select_sleep_state(dev); > + clk_disable_unprepare(st->clk); > + > + return 0; > +} > + > +static int at91_adc_resume(struct device *dev) > +{ > + struct iio_dev *idev = platform_get_drvdata(to_platform_device(dev)); > + struct at91_adc_state *st = iio_priv(idev); > + > + clk_prepare_enable(st->clk); > + pinctrl_pm_select_default_state(dev); > + > + return 0; > +} > + > +static const struct dev_pm_ops at91_adc_pm_ops = { > + .suspend = at91_adc_suspend, > + .resume = at91_adc_resume, > +}; > + > +#define AT91_ADC_PM_OPS (&at91_adc_pm_ops) > +#else > +#define AT91_ADC_PM_OPS NULL > +#endif > + and this macro: SET_SYSTEM_SLEEP_PM_OPS Regards Ludovic > static struct at91_adc_caps at91sam9260_caps = { > .calc_startup_ticks = calc_startup_ticks_9260, > .num_channels = 4, > @@ -1441,6 +1475,7 @@ static struct platform_driver at91_adc_driver = { > .driver = { > .name = DRIVER_NAME, > .of_match_table = of_match_ptr(at91_adc_dt_ids), > + .pm = AT91_ADC_PM_OPS, > }, > }; > > -- > 2.7.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index bbdac07..ffa81a1 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -30,6 +30,7 @@ #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> +#include <linux/pinctrl/consumer.h> /* Registers */ #define AT91_ADC_CR 0x00 /* Control Register */ @@ -1347,6 +1348,39 @@ static int at91_adc_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int at91_adc_suspend(struct device *dev) +{ + struct iio_dev *idev = platform_get_drvdata(to_platform_device(dev)); + struct at91_adc_state *st = iio_priv(idev); + + pinctrl_pm_select_sleep_state(dev); + clk_disable_unprepare(st->clk); + + return 0; +} + +static int at91_adc_resume(struct device *dev) +{ + struct iio_dev *idev = platform_get_drvdata(to_platform_device(dev)); + struct at91_adc_state *st = iio_priv(idev); + + clk_prepare_enable(st->clk); + pinctrl_pm_select_default_state(dev); + + return 0; +} + +static const struct dev_pm_ops at91_adc_pm_ops = { + .suspend = at91_adc_suspend, + .resume = at91_adc_resume, +}; + +#define AT91_ADC_PM_OPS (&at91_adc_pm_ops) +#else +#define AT91_ADC_PM_OPS NULL +#endif + static struct at91_adc_caps at91sam9260_caps = { .calc_startup_ticks = calc_startup_ticks_9260, .num_channels = 4, @@ -1441,6 +1475,7 @@ static struct platform_driver at91_adc_driver = { .driver = { .name = DRIVER_NAME, .of_match_table = of_match_ptr(at91_adc_dt_ids), + .pm = AT91_ADC_PM_OPS, }, };
Add suspend/resume callback, support the pinctrl sleep state when the system suspend as well. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> --- drivers/iio/adc/at91_adc.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)