ARM: S5PC1xx: add gpiolib and external/gpio interrupt support

Add support for gpiolib calls. This is based on the gpiolib implementation
from plat-s3c64xx tree.
Add support for external interrupts for GPIO H banks.
Add support for GPIO interrupts for all banks.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 12 insertions, 3 deletions

diff --git a/arch/arm/plat-s5pc1xx/include/plat/irqs.h b/arch/arm/plat-s5pc1xx/include/plat/irqs.h
index f07d8c3b25d..ef8736366f0 100644
--- a/arch/arm/plat-s5pc1xx/include/plat/irqs.h
+++ b/arch/arm/plat-s5pc1xx/include/plat/irqs.h
@@ -171,12 +171,21 @@
 #define IRQ_SDMIRQ              S5PC1XX_IRQ_VIC2(30)
 #define IRQ_SDMFIQ              S5PC1XX_IRQ_VIC2(31)
 
+/* External interrupt */
 #define S3C_IRQ_EINT_BASE       (IRQ_SDMFIQ + 1)
 
-#define S3C_EINT(x)             ((x) + S3C_IRQ_EINT_BASE)
-#define IRQ_EINT(x)             S3C_EINT(x)
+#define S3C_EINT(x)             (S3C_IRQ_EINT_BASE + (x - 16))
+#define IRQ_EINT(x)             (x < 16 ? IRQ_EINT0 + x : S3C_EINT(x))
+#define IRQ_EINT_BIT(x)         (x < IRQ_EINT16_31 ? x - IRQ_EINT0 : x - S3C_EINT(0))
 
-#define NR_IRQS                 (IRQ_EINT(31)+1)
+/* GPIO interrupt */
+#define S3C_IRQ_GPIO_BASE       (IRQ_EINT(31) + 1)
+#define S3C_IRQ_GPIO(x)         (S3C_IRQ_GPIO_BASE + (x))
+
+/*
+ * Until MP04 Groups -> 40 (exactly 39) Groups * 8 ~= 320 GPIOs
+ */
+#define NR_IRQS                 (S3C_IRQ_GPIO(320) + 1)
 
 #endif /* __ASM_PLAT_S5PC1XX_IRQS_H */