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mfd: arizona: Disable interrupts during suspend

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We aren't able to handle interrupts after the device has suspended since
we need to runtime resume it in order to do so but the controller may not
be available any more. Handle this in the same way as we handle a similar
issue on resume.

Reported-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-04-10 12:40:26 +01:00
parent 1d017b6b36
commit 67c9929691
1 changed files with 22 additions and 1 deletions
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23
drivers/mfd/arizona-core.c
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@ -409,6 +409,26 @@ static int arizona_runtime_suspend(struct device *dev)
#endif #endif
#ifdef CONFIG_PM_SLEEP #ifdef CONFIG_PM_SLEEP
static int arizona_suspend(struct device *dev)
{
struct arizona *arizona = dev_get_drvdata(dev);
dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
disable_irq(arizona->irq);
return 0;
}
static int arizona_suspend_late(struct device *dev)
{
struct arizona *arizona = dev_get_drvdata(dev);
dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
enable_irq(arizona->irq);
return 0;
}
static int arizona_resume_noirq(struct device *dev) static int arizona_resume_noirq(struct device *dev)
{ {
struct arizona *arizona = dev_get_drvdata(dev); struct arizona *arizona = dev_get_drvdata(dev);
@ -434,8 +454,9 @@ const struct dev_pm_ops arizona_pm_ops = {
SET_RUNTIME_PM_OPS(arizona_runtime_suspend, SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
arizona_runtime_resume, arizona_runtime_resume,
NULL) NULL)
SET_SYSTEM_SLEEP_PM_OPS(NULL, arizona_resume) SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
#ifdef CONFIG_PM_SLEEP #ifdef CONFIG_PM_SLEEP
.suspend_late = arizona_suspend_late,
.resume_noirq = arizona_resume_noirq, .resume_noirq = arizona_resume_noirq,
#endif #endif
}; };