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authorJoonyoung Shim <jy0922.shim@samsung.com>2010-10-01 11:24:39 +0900
committerKukjin Kim <kgene.kim@samsung.com>2010-10-21 07:54:57 +0900
commit8ce14a221efe8ef9019e2c5b1e06fcd329e66d78 (patch)
tree1fab3fd0c7e73ec9da6d84a47e4471bd0919ea73 /arch/arm/plat-samsung
parent02c38497d668f46467e8ec57a243be0be5bd7f85 (diff)
downloadop-kernel-dev-8ce14a221efe8ef9019e2c5b1e06fcd329e66d78.zip
op-kernel-dev-8ce14a221efe8ef9019e2c5b1e06fcd329e66d78.tar.gz
ARM: SAMSUNG: Add common samsung_gpiolib_to_irq function
This patch adds a common callback for gpio_to_irq() for external and gpio interrupts for Samsung SoCs. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Ben Dooks <ben-linux@fluff.org> [kgene.kim@samsung.com: moved samsung_gpiolib_to_irq() for s3c24xx build] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r--arch/arm/plat-samsung/gpio.c8
-rw-r--r--arch/arm/plat-samsung/include/plat/gpio-core.h11
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/gpio.c b/arch/arm/plat-samsung/gpio.c
index b83a833..7743c4b 100644
--- a/arch/arm/plat-samsung/gpio.c
+++ b/arch/arm/plat-samsung/gpio.c
@@ -157,3 +157,11 @@ __init void s3c_gpiolib_add(struct s3c_gpio_chip *chip)
if (ret >= 0)
s3c_gpiolib_track(chip);
}
+
+int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+ struct s3c_gpio_chip *s3c_chip = container_of(chip,
+ struct s3c_gpio_chip, chip);
+
+ return s3c_chip->irq_base + offset;
+}
diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h
index c22c27c..13a22b8 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-core.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
@@ -122,6 +122,17 @@ extern void samsung_gpiolib_add_4bit2_chips(struct s3c_gpio_chip *chip,
extern void samsung_gpiolib_add_4bit(struct s3c_gpio_chip *chip);
extern void samsung_gpiolib_add_4bit2(struct s3c_gpio_chip *chip);
+
+/**
+ * samsung_gpiolib_to_irq - convert gpio pin to irq number
+ * @chip: The gpio chip that the pin belongs to.
+ * @offset: The offset of the pin in the chip.
+ *
+ * This helper returns the irq number calculated from the chip->irq_base and
+ * the provided offset.
+ */
+extern int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset);
+
/* exported for core SoC support to change */
extern struct s3c_gpio_cfg s3c24xx_gpiocfg_default;
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