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Subject[PATCH] gpio: pca953x: Read irq trigger type from DT
Date
Instead of hardcoding irq trigger type to IRQF_TRIGGER_LOW, let's
respect settings specified in DT. Default to IRQF_TRIGGER_LOW,
if DT does not provide a flag.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
drivers/gpio/gpio-pca953x.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 6652bee01966..e0e2a77ef6ad 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -744,6 +744,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, int irq_base)
struct irq_chip *irq_chip = &chip->irq_chip;
DECLARE_BITMAP(reg_direction, MAX_LINE);
DECLARE_BITMAP(irq_stat, MAX_LINE);
+ unsigned long irqflags;
int ret;

if (!client->irq)
@@ -768,10 +769,14 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, int irq_base)
bitmap_and(chip->irq_stat, irq_stat, reg_direction, chip->gpio_chip.ngpio);
mutex_init(&chip->irq_lock);

+ irqflags = irq_get_trigger_type(client->irq);
+ if (irqflags == IRQF_TRIGGER_NONE)
+ irqflags = IRQF_TRIGGER_LOW;
+ irqflags |= IRQF_ONESHOT | IRQF_SHARED;
+
ret = devm_request_threaded_irq(&client->dev, client->irq,
NULL, pca953x_irq_handler,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT |
- IRQF_SHARED,
+ irqflags,
dev_name(&client->dev), chip);
if (ret) {
dev_err(&client->dev, "failed to request irq %d\n",
--
2.24.0
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