diff options
| author | Daniel WILLERUD <daniel.willerud@stericsson.com> | 2012-04-12 10:15:05 +0400 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2013-03-07 08:27:04 +0400 |
| commit | 774c50abae2456af492728aee8d282ba5079b744 (patch) | |
| tree | a271c25dc028d8bd3d8b81f514d909a57b6f90c2 /drivers/mfd/ab8500-gpadc.c | |
| parent | f04a9d8adf766c480353c0f2427e641251c9b059 (diff) | |
| download | linux-774c50abae2456af492728aee8d282ba5079b744.tar.xz | |
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.c | 28 |
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 = { |