ARM: S5PV210: Add IRQ_EINT interrupt support.

Add support for external interrupts on S5PV210.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Pannaga Bhushan <p.bhushan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
[ben-linux@fluff.org: Ext => IRQ_EINT in title]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

2 files changed, 55 insertions, 20 deletions

diff --git a/arch/arm/mach-s5pv210/include/mach/irqs.h b/arch/arm/mach-s5pv210/include/mach/irqs.h
index 62c5175ef291..3a9e42e7734b 100644
--- a/arch/arm/mach-s5pv210/include/mach/irqs.h
+++ b/arch/arm/mach-s5pv210/include/mach/irqs.h
@@ -17,22 +17,6 @@
 
 /* VIC0: System, DMA, Timer */
 
-#define IRQ_EINT0               S5P_IRQ_VIC0(0)
-#define IRQ_EINT1               S5P_IRQ_VIC0(1)
-#define IRQ_EINT2               S5P_IRQ_VIC0(2)
-#define IRQ_EINT3               S5P_IRQ_VIC0(3)
-#define IRQ_EINT4               S5P_IRQ_VIC0(4)
-#define IRQ_EINT5               S5P_IRQ_VIC0(5)
-#define IRQ_EINT6               S5P_IRQ_VIC0(6)
-#define IRQ_EINT7               S5P_IRQ_VIC0(7)
-#define IRQ_EINT8               S5P_IRQ_VIC0(8)
-#define IRQ_EINT9               S5P_IRQ_VIC0(9)
-#define IRQ_EINT10              S5P_IRQ_VIC0(10)
-#define IRQ_EINT11              S5P_IRQ_VIC0(11)
-#define IRQ_EINT12              S5P_IRQ_VIC0(12)
-#define IRQ_EINT13              S5P_IRQ_VIC0(13)
-#define IRQ_EINT14              S5P_IRQ_VIC0(14)
-#define IRQ_EINT15              S5P_IRQ_VIC0(15)
 #define IRQ_EINT16_31           S5P_IRQ_VIC0(16)
 #define IRQ_BATF                S5P_IRQ_VIC0(17)
 #define IRQ_MDMA                S5P_IRQ_VIC0(18)
@@ -134,13 +118,20 @@
 #define IRQ_MDNIE3              S5P_IRQ_VIC3(8)
 #define IRQ_VIC_END             S5P_IRQ_VIC3(31)
 
-#define S5P_IRQ_EINT_BASE       (IRQ_VIC_END + 1)
+#define S5P_EINT_16_31_BASE     (IRQ_VIC_END + 1)
 
-#define S5P_EINT(x)             ((x) + S5P_IRQ_EINT_BASE)
-#define IRQ_EINT(x)             S5P_EINT(x)
+#define EINT_MODE               S3C_GPIO_SFN(0xf)
+
+#define IRQ_EINT(x)             ((x) < 16 ? ((x) + S5P_IRQ_VIC0(0)) \
+                                        : ((x) + S5P_EINT_16_31_BASE))
 
 /* Set the default NR_IRQS */
 
-#define NR_IRQS                 (IRQ_EINT(31) + 1)
+#define NR_IRQS                 (IRQ_EINT(31) + 1)
+
+#define EINT_GPIO_0(x)          S5PV210_GPH0(x)
+#define EINT_GPIO_1(x)          S5PV210_GPH1(x)
+#define EINT_GPIO_2(x)          S5PV210_GPH2(x)
+#define EINT_GPIO_3(x)          S5PV210_GPH3(x)
 
 #endif /* ASM_ARCH_IRQS_H */
diff --git a/arch/arm/mach-s5pv210/include/mach/regs-gpio.h b/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
new file mode 100644
index 000000000000..6d068091c36c
--- /dev/null
+++ b/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
@@ -0,0 +1,44 @@
+/* linux/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * S5PV210 - GPIO (including EINT) register definitions
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __ASM_ARCH_REGS_GPIO_H
+#define __ASM_ARCH_REGS_GPIO_H __FILE__
+
+#include <mach/map.h>
+
+#define S5PV210_EINT30CON               (S5P_VA_GPIO + 0xE00)
+#define S5P_EINT_CON(x)                 (S5PV210_EINT30CON + ((x) * 0x4))
+
+#define S5PV210_EINT30FLTCON0           (S5P_VA_GPIO + 0xE80)
+#define S5P_EINT_FLTCON(x)              (S5PV210_EINT30FLTCON0 + ((x) * 0x4))
+
+#define S5PV210_EINT30MASK              (S5P_VA_GPIO + 0xF00)
+#define S5P_EINT_MASK(x)                (S5PV210_EINT30MASK + ((x) * 0x4))
+
+#define S5PV210_EINT30PEND              (S5P_VA_GPIO + 0xF40)
+#define S5P_EINT_PEND(x)                (S5PV210_EINT30PEND + ((x) * 0x4))
+
+#define eint_offset(irq)        ((irq) < IRQ_EINT16_31 ? ((irq) - IRQ_EINT(0)) \
+                                                : ((irq) - S5P_EINT_16_31_BASE))
+
+#define EINT_REG_NR(x)                  (eint_offset(x) >> 3)
+
+#define eint_irq_to_bit(irq)            (1 << (eint_offset(irq) & 0x7))
+
+/* values for S5P_EXTINT0 */
+#define S5P_EXTINT_LOWLEV               (0x00)
+#define S5P_EXTINT_HILEV                (0x01)
+#define S5P_EXTINT_FALLEDGE             (0x02)
+#define S5P_EXTINT_RISEEDGE             (0x03)
+#define S5P_EXTINT_BOTHEDGE             (0x04)
+
+#endif /* __ASM_ARCH_REGS_GPIO_H */