[PATCH] GPIO: sa1100: implement proper gpiolib gpio_to_irq conversion
Russell King - ARM Linux
linux at arm.linux.org.uk
Sun Dec 18 13:24:57 EST 2011
From: Russell King <rmk+kernel at arm.linux.org.uk>
The existing gpio_to_irq() implementation on sa1100 only translates
validly for internal GPIOs. Since this sub-arch enables GPIOLIB
support, this results in buggy translations for non-internal GPIOs.
Get rid of the private gpio_to_irq() implementation, replacing it
with the .to_irq method in the sa1100 gpio chip instead.
Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
---
Grant, please apply to your gpio tree. Thanks.
arch/arm/mach-sa1100/include/mach/gpio.h | 3 ---
drivers/gpio/gpio-sa1100.c | 6 ++++++
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-sa1100/include/mach/gpio.h b/arch/arm/mach-sa1100/include/mach/gpio.h
index 7036318..a38fc4f 100644
--- a/arch/arm/mach-sa1100/include/mach/gpio.h
+++ b/arch/arm/mach-sa1100/include/mach/gpio.h
@@ -51,7 +51,4 @@ static inline void gpio_set_value(unsigned gpio, int value)
#define gpio_cansleep __gpio_cansleep
-#define gpio_to_irq(gpio) ((gpio < 11) ? (IRQ_GPIO0 + gpio) : \
- (IRQ_GPIO11 - 11 + gpio))
-
#endif
diff --git a/drivers/gpio/gpio-sa1100.c b/drivers/gpio/gpio-sa1100.c
index b6c1f6d..7eecf69 100644
--- a/drivers/gpio/gpio-sa1100.c
+++ b/drivers/gpio/gpio-sa1100.c
@@ -47,12 +47,18 @@ static int sa1100_direction_output(struct gpio_chip *chip, unsigned offset, int
return 0;
}
+static int sa1100_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ return offset < 11 ? (IRQ_GPIO0 + offset) : (IRQ_GPIO11 - 11 + offset);
+}
+
static struct gpio_chip sa1100_gpio_chip = {
.label = "gpio",
.direction_input = sa1100_direction_input,
.direction_output = sa1100_direction_output,
.set = sa1100_gpio_set,
.get = sa1100_gpio_get,
+ .to_irq = sa1100_to_irq,
.base = 0,
.ngpio = GPIO_MAX + 1,
};
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