diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2011-03-15 21:17:43 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-03-15 21:17:43 +0900 |
| commit | 721bbd4a06e83995ac1679d9cdca19a608fb0122 (patch) | |
| tree | 5e2612cdade5348607e2de8e87f1a056c0e6f142 | |
| parent | a43efddc3bf8b143ff9352763cd39d425db14d27 (diff) | |
ARM: EXYNOS4: Add support for gpio interrupts
This patch adds support for gpio interrupts on Samsung EXYNOS4 platform.
Common s5p-gpioint.c code is used for handling gpio interrupts. Each gpio
line that needs gpio interrupt support must be later registered with
s5p_register_gpio_interrupt() function.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| -rw-r--r-- | arch/arm/mach-exynos4/gpiolib.c | 18 | ||||
| -rw-r--r-- | arch/arm/mach-exynos4/include/mach/irqs.h | 12 |
2 files changed, 25 insertions, 5 deletions
diff --git a/arch/arm/mach-exynos4/gpiolib.c b/arch/arm/mach-exynos4/gpiolib.c index 1b4121c2e53..d54ca6adb66 100644 --- a/arch/arm/mach-exynos4/gpiolib.c +++ b/arch/arm/mach-exynos4/gpiolib.c @@ -304,6 +304,7 @@ static __init int exynos4_gpiolib_init(void) { struct s3c_gpio_chip *chip; int i; + int group = 0; int nr_chips; /* GPIO part 1 */ @@ -312,8 +313,11 @@ static __init int exynos4_gpiolib_init(void) nr_chips = ARRAY_SIZE(exynos4_gpio_part1_4bit); for (i = 0; i < nr_chips; i++, chip++) { - if (chip->config == NULL) + if (chip->config == NULL) { chip->config = &gpio_cfg; + /* Assign the GPIO interrupt group */ + chip->group = group++; + } if (chip->base == NULL) chip->base = S5P_VA_GPIO1 + (i) * 0x20; } @@ -326,8 +330,11 @@ static __init int exynos4_gpiolib_init(void) nr_chips = ARRAY_SIZE(exynos4_gpio_part2_4bit); for (i = 0; i < nr_chips; i++, chip++) { - if (chip->config == NULL) + if (chip->config == NULL) { chip->config = &gpio_cfg; + /* Assign the GPIO interrupt group */ + chip->group = group++; + } if (chip->base == NULL) chip->base = S5P_VA_GPIO2 + (i) * 0x20; } @@ -340,13 +347,18 @@ static __init int exynos4_gpiolib_init(void) nr_chips = ARRAY_SIZE(exynos4_gpio_part3_4bit); for (i = 0; i < nr_chips; i++, chip++) { - if (chip->config == NULL) + if (chip->config == NULL) { chip->config = &gpio_cfg; + /* Assign the GPIO interrupt group */ + chip->group = group++; + } if (chip->base == NULL) chip->base = S5P_VA_GPIO3 + (i) * 0x20; } samsung_gpiolib_add_4bit_chips(exynos4_gpio_part3_4bit, nr_chips); + s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS); + s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS); return 0; } diff --git a/arch/arm/mach-exynos4/include/mach/irqs.h b/arch/arm/mach-exynos4/include/mach/irqs.h index 1db1de8e3e8..5d037301d21 100644 --- a/arch/arm/mach-exynos4/include/mach/irqs.h +++ b/arch/arm/mach-exynos4/include/mach/irqs.h @@ -85,6 +85,9 @@ #define IRQ_RTC_ALARM COMBINER_IRQ(23, 0) #define IRQ_RTC_TIC COMBINER_IRQ(23, 1) +#define IRQ_GPIO_XB COMBINER_IRQ(24, 0) +#define IRQ_GPIO_XA COMBINER_IRQ(24, 1) + #define IRQ_UART0 COMBINER_IRQ(26, 0) #define IRQ_UART1 COMBINER_IRQ(26, 1) #define IRQ_UART2 COMBINER_IRQ(26, 2) @@ -145,8 +148,13 @@ #define S5P_EINT_BASE1 (S5P_IRQ_EINT_BASE + 0) #define S5P_EINT_BASE2 (S5P_IRQ_EINT_BASE + 16) -/* Set the default NR_IRQS */ +/* optional GPIO interrupts */ +#define S5P_GPIOINT_BASE (S5P_IRQ_EINT_BASE + 32) +#define IRQ_GPIO1_NR_GROUPS 16 +#define IRQ_GPIO2_NR_GROUPS 9 +#define IRQ_GPIO_END (S5P_GPIOINT_BASE + S5P_GPIOINT_COUNT) -#define NR_IRQS (S5P_IRQ_EINT_BASE + 32) +/* Set the default NR_IRQS */ +#define NR_IRQS (IRQ_GPIO_END) #endif /* __ASM_ARCH_IRQS_H */ |