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authorDaniel WILLERUD <daniel.willerud@stericsson.com>2012-04-12 08:15:05 +0200
committerLee Jones <lee.jones@linaro.org>2013-03-07 12:27:04 +0800
commit774c50abae2456af492728aee8d282ba5079b744 (patch)
treea271c25dc028d8bd3d8b81f514d909a57b6f90c2 /drivers/mfd/ab8500-gpadc.c
parentf04a9d8adf766c480353c0f2427e641251c9b059 (diff)
mfd: ab8500-gpadc: Implemented suspend/resume
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>
Diffstat (limited to 'drivers/mfd/ab8500-gpadc.c')
-rw-r--r--drivers/mfd/ab8500-gpadc.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index b1f3561b023f..9ed3afc31d11 100644
--- a/drivers/mfd/ab8500-gpadc.c
+++ b/drivers/mfd/ab8500-gpadc.c
@@ -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 = {