ARM: S5P6440: Add IRQ support

This patch adds IRQ support for S5P6440 CPU.

Signed-off-by: Adityapratap Sharma <aditya.ps@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

2 files changed, 130 insertions, 0 deletions

diff --git a/arch/arm/mach-s5p6440/include/mach/irqs.h b/arch/arm/mach-s5p6440/include/mach/irqs.h
new file mode 100644
index 000000000000..a4b9b40d18f2
--- /dev/null
+++ b/arch/arm/mach-s5p6440/include/mach/irqs.h
@@ -0,0 +1,111 @@
+/* linux/arch/arm/mach-s5p6440/include/mach/irqs.h
+ *
+ * Copyright 2009 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5P6440 - IRQ 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_S5P_IRQS_H
+#define __ASM_ARCH_S5P_IRQS_H __FILE__
+
+#include <plat/irqs.h>
+
+/* VIC0 */
+
+#define IRQ_EINT0_3             S5P_IRQ_VIC0(0)
+#define IRQ_EINT4_11            S5P_IRQ_VIC0(1)
+#define IRQ_RTC_TIC             S5P_IRQ_VIC0(2)
+#define IRQ_IIC1                S5P_IRQ_VIC0(5)
+#define IRQ_I2SV40              S5P_IRQ_VIC0(6)
+#define IRQ_GPS                 S5P_IRQ_VIC0(7)
+#define IRQ_POST0               S5P_IRQ_VIC0(9)
+#define IRQ_2D                  S5P_IRQ_VIC0(11)
+#define IRQ_TIMER0_VIC          S5P_IRQ_VIC0(23)
+#define IRQ_TIMER1_VIC          S5P_IRQ_VIC0(24)
+#define IRQ_TIMER2_VIC          S5P_IRQ_VIC0(25)
+#define IRQ_WDT                 S5P_IRQ_VIC0(26)
+#define IRQ_TIMER3_VIC          S5P_IRQ_VIC0(27)
+#define IRQ_TIMER4_VIC          S5P_IRQ_VIC0(28)
+#define IRQ_DISPCON0            S5P_IRQ_VIC0(29)
+#define IRQ_DISPCON1            S5P_IRQ_VIC0(30)
+#define IRQ_DISPCON2            S5P_IRQ_VIC0(31)
+
+/* VIC1 */
+
+#define IRQ_EINT12_15           S5P_IRQ_VIC1(0)
+#define IRQ_PCM0                S5P_IRQ_VIC1(2)
+#define IRQ_UART0               S5P_IRQ_VIC1(5)
+#define IRQ_UART1               S5P_IRQ_VIC1(6)
+#define IRQ_UART2               S5P_IRQ_VIC1(7)
+#define IRQ_UART3               S5P_IRQ_VIC1(8)
+#define IRQ_DMA0                S5P_IRQ_VIC1(9)
+#define IRQ_NFC                 S5P_IRQ_VIC1(13)
+#define IRQ_SPI0                S5P_IRQ_VIC1(16)
+#define IRQ_SPI1                S5P_IRQ_VIC1(17)
+#define IRQ_IIC                 S5P_IRQ_VIC1(18)
+#define IRQ_DISPCON3            S5P_IRQ_VIC1(19)
+#define IRQ_FIMGVG              S5P_IRQ_VIC1(20)
+#define IRQ_EINT_GROUPS         S5P_IRQ_VIC1(21)
+#define IRQ_PMUIRQ              S5P_IRQ_VIC1(23)
+#define IRQ_HSMMC0              S5P_IRQ_VIC1(24)
+#define IRQ_HSMMC1              S5P_IRQ_VIC1(25)
+#define IRQ_HSMMC2              IRQ_SPI1        /* shared with SPI1 */
+#define IRQ_OTG                 S5P_IRQ_VIC1(26)
+#define IRQ_DSI                 S5P_IRQ_VIC1(27)
+#define IRQ_RTC_ALARM           S5P_IRQ_VIC1(28)
+#define IRQ_TSI                 S5P_IRQ_VIC1(29)
+#define IRQ_PENDN               S5P_IRQ_VIC1(30)
+#define IRQ_TC                  IRQ_PENDN
+#define IRQ_ADC                 S5P_IRQ_VIC1(31)
+
+/*
+ * Since the IRQ_EINT(x) are a linear mapping on s5p6440 we just defined
+ * them as an IRQ_EINT(x) macro from S5P_IRQ_EINT_BASE which we place
+ * after the pair of VICs.
+ */
+
+#define S5P_IRQ_EINT_BASE       (S5P_IRQ_VIC1(31) + 6)
+
+#define S5P_EINT(x)             ((x) + S5P_IRQ_EINT_BASE)
+#define IRQ_EINT(x)             S5P_EINT(x)
+
+/*
+ * Next the external interrupt groups. These are similar to the IRQ_EINT(x)
+ * that they are sourced from the GPIO pins but with a different scheme for
+ * priority and source indication.
+ *
+ * The IRQ_EINT(x) can be thought of as 'group 0' of the available GPIO
+ * interrupts, but for historical reasons they are kept apart from these
+ * next interrupts.
+ *
+ * Use IRQ_EINT_GROUP(group, offset) to get the number for use in the
+ * machine specific support files.
+ */
+
+/* Actually, #6 and #7 are missing in the EINT_GROUP1 */
+#define IRQ_EINT_GROUP1_NR      (15)
+#define IRQ_EINT_GROUP2_NR      (8)
+#define IRQ_EINT_GROUP5_NR      (7)
+#define IRQ_EINT_GROUP6_NR      (10)
+/* Actually, #0, #1 and #2 are missing in the EINT_GROUP8 */
+#define IRQ_EINT_GROUP8_NR      (11)
+
+#define IRQ_EINT_GROUP_BASE     S5P_EINT(16)
+#define IRQ_EINT_GROUP1_BASE    (IRQ_EINT_GROUP_BASE + 0)
+#define IRQ_EINT_GROUP2_BASE    (IRQ_EINT_GROUP1_BASE + IRQ_EINT_GROUP1_NR)
+#define IRQ_EINT_GROUP5_BASE    (IRQ_EINT_GROUP2_BASE + IRQ_EINT_GROUP2_NR)
+#define IRQ_EINT_GROUP6_BASE    (IRQ_EINT_GROUP5_BASE + IRQ_EINT_GROUP5_NR)
+#define IRQ_EINT_GROUP8_BASE    (IRQ_EINT_GROUP6_BASE + IRQ_EINT_GROUP6_NR)
+
+#define IRQ_EINT_GROUP(grp, x)  (IRQ_EINT_GROUP##grp##_BASE + (x))
+
+/* Set the default NR_IRQS */
+
+#define NR_IRQS                 (IRQ_EINT_GROUP8_BASE + IRQ_EINT_GROUP8_NR + 1)
+
+#endif /* __ASM_ARCH_S5P_IRQS_H */
diff --git a/arch/arm/mach-s5p6440/include/mach/regs-irq.h b/arch/arm/mach-s5p6440/include/mach/regs-irq.h
new file mode 100644
index 000000000000..a961f4beeb0c
--- /dev/null
+++ b/arch/arm/mach-s5p6440/include/mach/regs-irq.h
@@ -0,0 +1,19 @@
+/* linux/arch/arm/mach-s5p6440/include/mach/regs-irq.h
+ *
+ * Copyright (c) 2009 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5P6440 - IRQ 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_IRQ_H
+#define __ASM_ARCH_REGS_IRQ_H __FILE__
+
+#include <asm/hardware/vic.h>
+#include <mach/map.h>
+
+#endif /* __ASM_ARCH_REGS_IRQ_H */