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mfd: arizona: Try to use interrupt flags from interrupt controller 

If no irq_flags are passed in platform data then query the interrupt
controller for the trigger type and try to use that. This provides
default operation with a wider range of hardware and will be needed
for device tree support where the interrupt flags are configured on
the interrupt controller.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2013-03-24 23:16:56 +00:00 committed by Samuel Ortiz
parent 3092f8050e
commit 22c75fe7c7
1 changed files with 25 additions and 2 deletions
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27
drivers/mfd/arizona-irq.c
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@ -189,6 +189,7 @@ int arizona_irq_init(struct arizona *arizona)
int ret, i;
const struct regmap_irq_chip *aod, *irq;
bool ctrlif_error = true;
struct irq_data *irq_data;
switch (arizona->type) {
#ifdef CONFIG_MFD_WM5102
@ -215,8 +216,30 @@ int arizona_irq_init(struct arizona *arizona)
/* Disable all wake sources by default */
regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0);
if (!arizona->pdata.irq_flags)
arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
/* Read the flags from the interrupt controller if not specified */
if (!arizona->pdata.irq_flags) {
irq_data = irq_get_irq_data(arizona->irq);
if (!irq_data) {
dev_err(arizona->dev, "Invalid IRQ: %d\n",
arizona->irq);
return -EINVAL;
}
arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data);
switch (arizona->pdata.irq_flags) {
case IRQF_TRIGGER_LOW:
case IRQF_TRIGGER_HIGH:
case IRQF_TRIGGER_RISING:
case IRQF_TRIGGER_FALLING:
break;
case IRQ_TYPE_NONE:
default:
/* Device default */
arizona->pdata.irq_flags = IRQF_TRIGGER_LOW;
break;
}
}
if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH |
IRQF_TRIGGER_RISING)) {