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mfd: ab8500-gpadc: Implemented suspend/resume

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suspend/resume methods implemented to prevent suspend while the gpadc
driver is busy.

Signed-off-by: Daniel WILLERUD <daniel.willerud@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Daniel WILLERUD 2012-04-12 08:15:05 +02:00 committed by Lee Jones
parent f04a9d8adf
commit 774c50abae
1 changed files with 28 additions and 0 deletions
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28
drivers/mfd/ab8500-gpadc.c
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@ -605,6 +605,31 @@ static int ab8500_gpadc_runtime_idle(struct device *dev)
return 0;
}
static int ab8500_gpadc_suspend(struct device *dev)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
mutex_lock(&gpadc->ab8500_gpadc_lock);
pm_runtime_get_sync(dev);
regulator_disable(gpadc->regu);
return 0;
}
static int ab8500_gpadc_resume(struct device *dev)
{
struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
regulator_enable(gpadc->regu);
pm_runtime_mark_last_busy(gpadc->dev);
pm_runtime_put_autosuspend(gpadc->dev);
mutex_unlock(&gpadc->ab8500_gpadc_lock);
return 0;
}
static int ab8500_gpadc_probe(struct platform_device *pdev)
{
int ret = 0;
@ -698,6 +723,9 @@ static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
ab8500_gpadc_runtime_resume,
ab8500_gpadc_runtime_idle)
SET_SYSTEM_SLEEP_PM_OPS(ab8500_gpadc_suspend,
ab8500_gpadc_resume)
};
static struct platform_driver ab8500_gpadc_driver = {