diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-03-25 00:16:56 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-04-08 15:20:58 +0200 |
| commit | 22c75fe7c772c4c47df47364d9e807dcf204d7c2 (patch) | |
| tree | 1133bd6fced33aad6506911ce97977af3257c21c /drivers/mfd/arizona-irq.c | |
| parent | mfd: arizona: Allow GPIO to be specified for IRQ line (diff) | |
| download | linux-22c75fe7c772c4c47df47364d9e807dcf204d7c2.tar.xz linux-22c75fe7c772c4c47df47364d9e807dcf204d7c2.zip | |
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>
Diffstat (limited to 'drivers/mfd/arizona-irq.c')
| -rw-r--r-- | drivers/mfd/arizona-irq.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/mfd/arizona-irq.c b/drivers/mfd/arizona-irq.c index f761cc119c01..64cd9b6dac92 100644 --- a/drivers/mfd/arizona-irq.c +++ b/drivers/mfd/arizona-irq.c @@ -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)) { |