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authorMarek Szyprowski <m.szyprowski@samsung.com>2011-03-15 21:17:43 +0900
committerKukjin Kim <kgene.kim@samsung.com>2011-03-15 21:17:43 +0900
commit721bbd4a06e83995ac1679d9cdca19a608fb0122 (patch)
tree5e2612cdade5348607e2de8e87f1a056c0e6f142 /arch/arm/mach-exynos4
parenta43efddc3bf8b143ff9352763cd39d425db14d27 (diff)
downloadblackbird-op-linux-721bbd4a06e83995ac1679d9cdca19a608fb0122.tar.gz
blackbird-op-linux-721bbd4a06e83995ac1679d9cdca19a608fb0122.zip
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>
Diffstat (limited to 'arch/arm/mach-exynos4')
-rw-r--r--arch/arm/mach-exynos4/gpiolib.c18
-rw-r--r--arch/arm/mach-exynos4/include/mach/irqs.h12
2 files changed, 25 insertions, 5 deletions
diff --git a/arch/arm/mach-exynos4/gpiolib.c b/arch/arm/mach-exynos4/gpiolib.c
index 1b4121c2e53e..d54ca6adb660 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 1db1de8e3e81..5d037301d21a 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 */
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