This patch adds support for gpio interrupts on Samsung S5PC210 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 <[email protected]> Signed-off-by: Kyungmin Park <[email protected]> --- arch/arm/mach-exynos4/gpiolib.c | 18 +++++++++++++++--- 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 1b4121c..d54ca6a 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 1db1de8..5d03730 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 */ -- 1.7.1.569.g6f426 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
