Merge branch 'next/irq-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers

From Kukjin Kim <kgene.kim@samsung.com>:

Here is finish the irq rework for s3c2412, s3c2440 and s3c2442 into the new
structure and eint0 to 3 on the s3c2412.

* 'next/irq-s3c24xx' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  gpio: samsung: fixes build warning with s3c2410_defconfig
  ARM: S3C24XX: handle s3c2412 eints using new infrastructure
  ARM: S3C24XX: add soc_is_s3c2412 option
  ARM: S3C24XX: include first 4 bits of the eint register in irq mapping
  ARM: S3C24XX: transform s3c2412 irqs into new structure
  ARM: S3C24XX: modify s3c2412 irq init to initialize all irqs
  ARM: S3C24XX: move s3c2412 irq init to common code
  ARM: S3C24XX: use samsung_sync_wakemask in s3c2412 pm
  ARM: S3C24XX: transform s3c2440 irqs into new structure
  ARM: S3C24XX: transform s3c2442 irqs into new structure
  ARM: S3C24XX: integrate s3c2440 irqs into common init
  ARM: S3C24XX: move s3c2440 irqs to common irq code
  ARM: S3C24XX: create dedicated irq init functions for s3c2440 and s3c2442
  ARM: S3C24XX: move s3c244x irq init to common irq code

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-s3c24xx/Kconfig

@@ -407,6 +407,7 @@ config S3C2412_DMA
 config S3C2412_PM
 	bool
 	select S3C2412_PM_SLEEP
+	select SAMSUNG_WAKEMASK
 	help
 	  Internal config node to apply S3C2412 power management
 

arch/arm/mach-s3c24xx/Makefile

@@ -22,7 +22,7 @@ obj-$(CONFIG_S3C2410_DMA)	+= dma-s3c2410.o
 obj-$(CONFIG_S3C2410_PLL)	+= pll-s3c2410.o
 obj-$(CONFIG_S3C2410_PM)	+= pm-s3c2410.o sleep-s3c2410.o
 
-obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o irq-s3c2412.o clock-s3c2412.o
+obj-$(CONFIG_CPU_S3C2412)	+= s3c2412.o clock-s3c2412.o
 obj-$(CONFIG_S3C2412_CPUFREQ)	+= cpufreq-s3c2412.o
 obj-$(CONFIG_S3C2412_DMA)	+= dma-s3c2412.o
 obj-$(CONFIG_S3C2412_PM)	+= pm-s3c2412.o
@@ -31,9 +31,9 @@ obj-$(CONFIG_S3C2412_PM_SLEEP)	+= sleep-s3c2412.o
 obj-$(CONFIG_CPU_S3C2416)	+= s3c2416.o clock-s3c2416.o
 obj-$(CONFIG_S3C2416_PM)	+= pm-s3c2416.o
 
-obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o irq-s3c2440.o clock-s3c2440.o
+obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o clock-s3c2440.o
 obj-$(CONFIG_CPU_S3C2442)	+= s3c2442.o
-obj-$(CONFIG_CPU_S3C244X)	+= s3c244x.o irq-s3c244x.o clock-s3c244x.o
+obj-$(CONFIG_CPU_S3C244X)	+= s3c244x.o clock-s3c244x.o
 obj-$(CONFIG_S3C2440_CPUFREQ)	+= cpufreq-s3c2440.o
 obj-$(CONFIG_S3C2440_DMA)	+= dma-s3c2440.o
 obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o

arch/arm/mach-s3c24xx/common.h

@@ -36,6 +36,7 @@ extern void s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no);
 extern void s3c2412_init_clocks(int xtal);
 extern  int s3c2412_baseclk_add(void);
 extern void s3c2412_restart(char mode, const char *cmd);
+extern void s3c2412_init_irq(void);
 #else
 #define s3c2412_init_clocks NULL
 #define s3c2412_init_uarts NULL
@@ -73,6 +74,7 @@ extern void s3c244x_restart(char mode, const char *cmd);
 #ifdef CONFIG_CPU_S3C2440
 extern  int s3c2440_init(void);
 extern void s3c2440_map_io(void);
+extern void s3c2440_init_irq(void);
 #else
 #define s3c2440_init NULL
 #define s3c2440_map_io NULL
@@ -81,6 +83,7 @@ extern void s3c2440_map_io(void);
 #ifdef CONFIG_CPU_S3C2442
 extern  int s3c2442_init(void);
 extern void s3c2442_map_io(void);
+extern void s3c2442_init_irq(void);
 #else
 #define s3c2442_init NULL
 #define s3c2442_map_io NULL

arch/arm/mach-s3c24xx/include/mach/irqs.h

@@ -59,49 +59,53 @@
 #define IRQ_ADCPARENT  S3C2410_IRQ(31)
 
 /* interrupts generated from the external interrupts sources */
-#define IRQ_EINT4      S3C2410_IRQ(32)	   /* 48 */
-#define IRQ_EINT5      S3C2410_IRQ(33)
-#define IRQ_EINT6      S3C2410_IRQ(34)
-#define IRQ_EINT7      S3C2410_IRQ(35)
-#define IRQ_EINT8      S3C2410_IRQ(36)
-#define IRQ_EINT9      S3C2410_IRQ(37)
-#define IRQ_EINT10     S3C2410_IRQ(38)
-#define IRQ_EINT11     S3C2410_IRQ(39)
-#define IRQ_EINT12     S3C2410_IRQ(40)
-#define IRQ_EINT13     S3C2410_IRQ(41)
-#define IRQ_EINT14     S3C2410_IRQ(42)
-#define IRQ_EINT15     S3C2410_IRQ(43)
-#define IRQ_EINT16     S3C2410_IRQ(44)
-#define IRQ_EINT17     S3C2410_IRQ(45)
-#define IRQ_EINT18     S3C2410_IRQ(46)
-#define IRQ_EINT19     S3C2410_IRQ(47)
-#define IRQ_EINT20     S3C2410_IRQ(48)	   /* 64 */
-#define IRQ_EINT21     S3C2410_IRQ(49)
-#define IRQ_EINT22     S3C2410_IRQ(50)
-#define IRQ_EINT23     S3C2410_IRQ(51)
+#define IRQ_EINT0_2412 S3C2410_IRQ(32)
+#define IRQ_EINT1_2412 S3C2410_IRQ(33)
+#define IRQ_EINT2_2412 S3C2410_IRQ(34)
+#define IRQ_EINT3_2412 S3C2410_IRQ(35)
+#define IRQ_EINT4      S3C2410_IRQ(36)	   /* 52 */
+#define IRQ_EINT5      S3C2410_IRQ(37)
+#define IRQ_EINT6      S3C2410_IRQ(38)
+#define IRQ_EINT7      S3C2410_IRQ(39)
+#define IRQ_EINT8      S3C2410_IRQ(40)
+#define IRQ_EINT9      S3C2410_IRQ(41)
+#define IRQ_EINT10     S3C2410_IRQ(42)
+#define IRQ_EINT11     S3C2410_IRQ(43)
+#define IRQ_EINT12     S3C2410_IRQ(44)
+#define IRQ_EINT13     S3C2410_IRQ(45)
+#define IRQ_EINT14     S3C2410_IRQ(46)
+#define IRQ_EINT15     S3C2410_IRQ(47)
+#define IRQ_EINT16     S3C2410_IRQ(48)
+#define IRQ_EINT17     S3C2410_IRQ(49)
+#define IRQ_EINT18     S3C2410_IRQ(50)
+#define IRQ_EINT19     S3C2410_IRQ(51)
+#define IRQ_EINT20     S3C2410_IRQ(52)	   /* 68 */
+#define IRQ_EINT21     S3C2410_IRQ(53)
+#define IRQ_EINT22     S3C2410_IRQ(54)
+#define IRQ_EINT23     S3C2410_IRQ(55)
 
 #define IRQ_EINT_BIT(x)	((x) - IRQ_EINT4 + 4)
 #define IRQ_EINT(x)    (((x) >= 4) ? (IRQ_EINT4 + (x) - 4) : (IRQ_EINT0 + (x)))
 
-#define IRQ_LCD_FIFO   S3C2410_IRQ(52)
-#define IRQ_LCD_FRAME  S3C2410_IRQ(53)
+#define IRQ_LCD_FIFO   S3C2410_IRQ(56)
+#define IRQ_LCD_FRAME  S3C2410_IRQ(57)
 
 /* IRQs for the interal UARTs, and ADC
  * these need to be ordered in number of appearance in the
  * SUBSRC mask register
 */
 
-#define S3C2410_IRQSUB(x)	S3C2410_IRQ((x)+54)
+#define S3C2410_IRQSUB(x)	S3C2410_IRQ((x)+58)
 
-#define IRQ_S3CUART_RX0		S3C2410_IRQSUB(0)	/* 70 */
+#define IRQ_S3CUART_RX0		S3C2410_IRQSUB(0)	/* 74 */
 #define IRQ_S3CUART_TX0		S3C2410_IRQSUB(1)
 #define IRQ_S3CUART_ERR0	S3C2410_IRQSUB(2)
 
-#define IRQ_S3CUART_RX1		S3C2410_IRQSUB(3)	/* 73 */
+#define IRQ_S3CUART_RX1		S3C2410_IRQSUB(3)	/* 77 */
 #define IRQ_S3CUART_TX1		S3C2410_IRQSUB(4)
 #define IRQ_S3CUART_ERR1	S3C2410_IRQSUB(5)
 
-#define IRQ_S3CUART_RX2		S3C2410_IRQSUB(6)	/* 76 */
+#define IRQ_S3CUART_RX2		S3C2410_IRQSUB(6)	/* 80 */
 #define IRQ_S3CUART_TX2		S3C2410_IRQSUB(7)
 #define IRQ_S3CUART_ERR2	S3C2410_IRQSUB(8)
 
@@ -136,7 +140,7 @@
 
 /* second interrupt-register of s3c2416/s3c2450 */
 
-#define S3C2416_IRQ(x)		S3C2410_IRQ((x) + 54 + 29)
+#define S3C2416_IRQ(x)		S3C2410_IRQ((x) + 58 + 29)
 #define IRQ_S3C2416_2D		S3C2416_IRQ(0)
 #define IRQ_S3C2416_IIC1	S3C2416_IRQ(1)
 #define IRQ_S3C2416_RESERVED2	S3C2416_IRQ(2)

arch/arm/mach-s3c24xx/irq-s3c2412.c

@@ -1,215 +0,0 @@
-/* linux/arch/arm/mach-s3c2412/irq.c
- *
- * Copyright (c) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-
-#include <asm/mach/irq.h>
-
-#include <mach/regs-irq.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/cpu.h>
-#include <plat/irq.h>
-#include <plat/pm.h>
-
-#include "s3c2412-power.h"
-
-#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1)
-#define INTMSK_SUB(start, end) (INTMSK(start, end) << ((start - S3C2410_IRQSUB(0))))
-
-/* the s3c2412 changes the behaviour of IRQ_EINT0 through IRQ_EINT3 by
- * having them turn up in both the INT* and the EINT* registers. Whilst
- * both show the status, they both now need to be acked when the IRQs
- * go off.
-*/
-
-static void
-s3c2412_irq_mask(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_EINT0);
-	unsigned long mask;
-
-	mask = __raw_readl(S3C2410_INTMSK);
-	__raw_writel(mask | bitval, S3C2410_INTMSK);
-
-	mask = __raw_readl(S3C2412_EINTMASK);
-	__raw_writel(mask | bitval, S3C2412_EINTMASK);
-}
-
-static inline void
-s3c2412_irq_ack(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_EINT0);
-
-	__raw_writel(bitval, S3C2412_EINTPEND);
-	__raw_writel(bitval, S3C2410_SRCPND);
-	__raw_writel(bitval, S3C2410_INTPND);
-}
-
-static inline void
-s3c2412_irq_maskack(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_EINT0);
-	unsigned long mask;
-
-	mask = __raw_readl(S3C2410_INTMSK);
-	__raw_writel(mask|bitval, S3C2410_INTMSK);
-
-	mask = __raw_readl(S3C2412_EINTMASK);
-	__raw_writel(mask | bitval, S3C2412_EINTMASK);
-
-	__raw_writel(bitval, S3C2412_EINTPEND);
-	__raw_writel(bitval, S3C2410_SRCPND);
-	__raw_writel(bitval, S3C2410_INTPND);
-}
-
-static void
-s3c2412_irq_unmask(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_EINT0);
-	unsigned long mask;
-
-	mask = __raw_readl(S3C2412_EINTMASK);
-	__raw_writel(mask & ~bitval, S3C2412_EINTMASK);
-
-	mask = __raw_readl(S3C2410_INTMSK);
-	__raw_writel(mask & ~bitval, S3C2410_INTMSK);
-}
-
-static struct irq_chip s3c2412_irq_eint0t4 = {
-	.irq_ack	= s3c2412_irq_ack,
-	.irq_mask	= s3c2412_irq_mask,
-	.irq_unmask	= s3c2412_irq_unmask,
-	.irq_set_wake	= s3c_irq_wake,
-	.irq_set_type	= s3c_irqext_type,
-};
-
-#define INTBIT(x)	(1 << ((x) - S3C2410_IRQSUB(0)))
-
-/* CF and SDI sub interrupts */
-
-static void s3c2412_irq_demux_cfsdi(unsigned int irq, struct irq_desc *desc)
-{
-	unsigned int subsrc, submsk;
-
-	subsrc = __raw_readl(S3C2410_SUBSRCPND);
-	submsk = __raw_readl(S3C2410_INTSUBMSK);
-
-	subsrc  &= ~submsk;
-
-	if (subsrc & INTBIT(IRQ_S3C2412_SDI))
-		generic_handle_irq(IRQ_S3C2412_SDI);
-
-	if (subsrc & INTBIT(IRQ_S3C2412_CF))
-		generic_handle_irq(IRQ_S3C2412_CF);
-}
-
-#define INTMSK_CFSDI	(1UL << (IRQ_S3C2412_CFSDI - IRQ_EINT0))
-#define SUBMSK_CFSDI	INTMSK_SUB(IRQ_S3C2412_SDI, IRQ_S3C2412_CF)
-
-static void s3c2412_irq_cfsdi_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_CFSDI, SUBMSK_CFSDI);
-}
-
-static void s3c2412_irq_cfsdi_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_CFSDI);
-}
-
-static void s3c2412_irq_cfsdi_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_CFSDI, SUBMSK_CFSDI);
-}
-
-static struct irq_chip s3c2412_irq_cfsdi = {
-	.name		= "s3c2412-cfsdi",
-	.irq_ack	= s3c2412_irq_cfsdi_ack,
-	.irq_mask	= s3c2412_irq_cfsdi_mask,
-	.irq_unmask	= s3c2412_irq_cfsdi_unmask,
-};
-
-static int s3c2412_irq_rtc_wake(struct irq_data *data, unsigned int state)
-{
-	unsigned long pwrcfg;
-
-	pwrcfg = __raw_readl(S3C2412_PWRCFG);
-	if (state)
-		pwrcfg &= ~S3C2412_PWRCFG_RTC_MASKIRQ;
-	else
-		pwrcfg |= S3C2412_PWRCFG_RTC_MASKIRQ;
-	__raw_writel(pwrcfg, S3C2412_PWRCFG);
-
-	return s3c_irq_chip.irq_set_wake(data, state);
-}
-
-static struct irq_chip s3c2412_irq_rtc_chip;
-
-static int s3c2412_irq_add(struct device *dev, struct subsys_interface *sif)
-{
-	unsigned int irqno;
-
-	for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) {
-		irq_set_chip_and_handler(irqno, &s3c2412_irq_eint0t4,
-					 handle_edge_irq);
-		set_irq_flags(irqno, IRQF_VALID);
-	}
-
-	/* add demux support for CF/SDI */
-
-	irq_set_chained_handler(IRQ_S3C2412_CFSDI, s3c2412_irq_demux_cfsdi);
-
-	for (irqno = IRQ_S3C2412_SDI; irqno <= IRQ_S3C2412_CF; irqno++) {
-		irq_set_chip_and_handler(irqno, &s3c2412_irq_cfsdi,
-					 handle_level_irq);
-		set_irq_flags(irqno, IRQF_VALID);
-	}
-
-	/* change RTC IRQ's set wake method */
-
-	s3c2412_irq_rtc_chip = s3c_irq_chip;
-	s3c2412_irq_rtc_chip.irq_set_wake = s3c2412_irq_rtc_wake;
-
-	irq_set_chip(IRQ_RTC, &s3c2412_irq_rtc_chip);
-
-	return 0;
-}
-
-static struct subsys_interface s3c2412_irq_interface = {
-	.name		= "s3c2412_irq",
-	.subsys		= &s3c2412_subsys,
-	.add_dev	= s3c2412_irq_add,
-};
-
-static int s3c2412_irq_init(void)
-{
-	return subsys_interface_register(&s3c2412_irq_interface);
-}
-
-arch_initcall(s3c2412_irq_init);

arch/arm/mach-s3c24xx/irq-s3c2440.c

@@ -1,128 +0,0 @@
-/* linux/arch/arm/mach-s3c2440/irq.c
- *
- * Copyright (c) 2003-2004 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-
-#include <asm/mach/irq.h>
-
-#include <mach/regs-irq.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/cpu.h>
-#include <plat/pm.h>
-#include <plat/irq.h>
-
-/* WDT/AC97 */
-
-static void s3c_irq_demux_wdtac97(unsigned int irq,
-				  struct irq_desc *desc)
-{
-	unsigned int subsrc, submsk;
-
-	/* read the current pending interrupts, and the mask
-	 * for what it is available */
-
-	subsrc = __raw_readl(S3C2410_SUBSRCPND);
-	submsk = __raw_readl(S3C2410_INTSUBMSK);
-
-	subsrc &= ~submsk;
-	subsrc >>= 13;
-	subsrc &= 3;
-
-	if (subsrc != 0) {
-		if (subsrc & 1) {
-			generic_handle_irq(IRQ_S3C2440_WDT);
-		}
-		if (subsrc & 2) {
-			generic_handle_irq(IRQ_S3C2440_AC97);
-		}
-	}
-}
-
-
-#define INTMSK_WDT	 (1UL << (IRQ_WDT - IRQ_EINT0))
-
-static void
-s3c_irq_wdtac97_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_WDT, 3 << 13);
-}
-
-static void
-s3c_irq_wdtac97_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_WDT);
-}
-
-static void
-s3c_irq_wdtac97_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_WDT, 3 << 13);
-}
-
-static struct irq_chip s3c_irq_wdtac97 = {
-	.irq_mask	= s3c_irq_wdtac97_mask,
-	.irq_unmask	= s3c_irq_wdtac97_unmask,
-	.irq_ack	= s3c_irq_wdtac97_ack,
-};
-
-static int s3c2440_irq_add(struct device *dev, struct subsys_interface *sif)
-{
-	unsigned int irqno;
-
-	printk("S3C2440: IRQ Support\n");
-
-	/* add new chained handler for wdt, ac7 */
-
-	irq_set_chip_and_handler(IRQ_WDT, &s3c_irq_level_chip,
-				 handle_level_irq);
-	irq_set_chained_handler(IRQ_WDT, s3c_irq_demux_wdtac97);
-
-	for (irqno = IRQ_S3C2440_WDT; irqno <= IRQ_S3C2440_AC97; irqno++) {
-		irq_set_chip_and_handler(irqno, &s3c_irq_wdtac97,
-					 handle_level_irq);
-		set_irq_flags(irqno, IRQF_VALID);
-	}
-
-	return 0;
-}
-
-static struct subsys_interface s3c2440_irq_interface = {
-	.name		= "s3c2440_irq",
-	.subsys		= &s3c2440_subsys,
-	.add_dev	= s3c2440_irq_add,
-};
-
-static int s3c2440_irq_init(void)
-{
-	return subsys_interface_register(&s3c2440_irq_interface);
-}
-
-arch_initcall(s3c2440_irq_init);
-

arch/arm/mach-s3c24xx/irq-s3c244x.c

@@ -1,142 +0,0 @@
-/* linux/arch/arm/plat-s3c24xx/s3c244x-irq.c
- *
- * Copyright (c) 2003-2004 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-
-#include <asm/mach/irq.h>
-
-#include <mach/regs-irq.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/cpu.h>
-#include <plat/pm.h>
-#include <plat/irq.h>
-
-/* camera irq */
-
-static void s3c_irq_demux_cam(unsigned int irq,
-			      struct irq_desc *desc)
-{
-	unsigned int subsrc, submsk;
-
-	/* read the current pending interrupts, and the mask
-	 * for what it is available */
-
-	subsrc = __raw_readl(S3C2410_SUBSRCPND);
-	submsk = __raw_readl(S3C2410_INTSUBMSK);
-
-	subsrc &= ~submsk;
-	subsrc >>= 11;
-	subsrc &= 3;
-
-	if (subsrc != 0) {
-		if (subsrc & 1) {
-			generic_handle_irq(IRQ_S3C2440_CAM_C);
-		}
-		if (subsrc & 2) {
-			generic_handle_irq(IRQ_S3C2440_CAM_P);
-		}
-	}
-}
-
-#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
-
-static void
-s3c_irq_cam_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_CAM, 3 << 11);
-}
-
-static void
-s3c_irq_cam_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_CAM);
-}
-
-static void
-s3c_irq_cam_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_CAM, 3 << 11);
-}
-
-static struct irq_chip s3c_irq_cam = {
-	.irq_mask	= s3c_irq_cam_mask,
-	.irq_unmask	= s3c_irq_cam_unmask,
-	.irq_ack	= s3c_irq_cam_ack,
-};
-
-static int s3c244x_irq_add(struct device *dev, struct subsys_interface *sif)
-{
-	unsigned int irqno;
-
-	irq_set_chip_and_handler(IRQ_NFCON, &s3c_irq_level_chip,
-				 handle_level_irq);
-	set_irq_flags(IRQ_NFCON, IRQF_VALID);
-
-	/* add chained handler for camera */
-
-	irq_set_chip_and_handler(IRQ_CAM, &s3c_irq_level_chip,
-				 handle_level_irq);
-	irq_set_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
-
-	for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
-		irq_set_chip_and_handler(irqno, &s3c_irq_cam,
-					 handle_level_irq);
-		set_irq_flags(irqno, IRQF_VALID);
-	}
-
-	return 0;
-}
-
-static struct subsys_interface s3c2440_irq_interface = {
-	.name		= "s3c2440_irq",
-	.subsys		= &s3c2440_subsys,
-	.add_dev	= s3c244x_irq_add,
-};
-
-static int s3c2440_irq_init(void)
-{
-	return subsys_interface_register(&s3c2440_irq_interface);
-}
-
-arch_initcall(s3c2440_irq_init);
-
-static struct subsys_interface s3c2442_irq_interface = {
-	.name		= "s3c2442_irq",
-	.subsys		= &s3c2442_subsys,
-	.add_dev	= s3c244x_irq_add,
-};
-
-
-static int s3c2442_irq_init(void)
-{
-	return subsys_interface_register(&s3c2442_irq_interface);
-}
-
-arch_initcall(s3c2442_irq_init);

arch/arm/mach-s3c24xx/irq.c

@@ -342,7 +342,10 @@ static int s3c24xx_irq_map(struct irq_domain *h, unsigned int virq,
 	case S3C_IRQTYPE_NONE:
 		return 0;
 	case S3C_IRQTYPE_EINT:
-		if (irq_data->parent_irq)
+		/* On the S3C2412, the EINT0to3 have a parent irq
+		 * but need the s3c_irq_eint0t4 chip
+		 */
+		if (irq_data->parent_irq && (!soc_is_s3c2412() || hw >= 4))
 			irq_set_chip_and_handler(virq, &s3c_irqext_chip,
 						 handle_edge_irq);
 		else
@@ -450,7 +453,6 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
 	void __iomem *base = (void *)0xf6000000; /* static mapping */
 	int irq_num;
 	int irq_start;
-	int irq_offset;
 	int ret;
 
 	intc = kzalloc(sizeof(struct s3c_irq_intc), GFP_KERNEL);
@@ -474,7 +476,6 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
 		intc->reg_intpnd = base + 0x10;
 		irq_num = 32;
 		irq_start = S3C2410_IRQ(0);
-		irq_offset = 0;
 		break;
 	case 0x4a000018:
 		pr_debug("irq: found subintc\n");
@@ -482,7 +483,6 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
 		intc->reg_mask = base + 0x1c;
 		irq_num = 29;
 		irq_start = S3C2410_IRQSUB(0);
-		irq_offset = 0;
 		break;
 	case 0x4a000040:
 		pr_debug("irq: found intc2\n");
@@ -491,7 +491,6 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
 		intc->reg_intpnd = base + 0x50;
 		irq_num = 8;
 		irq_start = S3C2416_IRQ(0);
-		irq_offset = 0;
 		break;
 	case 0x560000a4:
 		pr_debug("irq: found eintc\n");
@@ -499,9 +498,8 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
 
 		intc->reg_mask = base + 0xa4;
 		intc->reg_pending = base + 0x08;
-		irq_num = 20;
+		irq_num = 24;
 		irq_start = S3C2410_IRQ(32);
-		irq_offset = 4;
 		break;
 	default:
 		pr_err("irq: unsupported controller address\n");
@@ -512,7 +510,7 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np,
 	/* now that all the data is complete, init the irq-domain */
 	s3c24xx_clear_intc(intc);
 	intc->domain = irq_domain_add_legacy(np, irq_num, irq_start,
-					     irq_offset, &s3c24xx_irq_ops,
+					     0, &s3c24xx_irq_ops,
 					     intc);
 	if (!intc->domain) {
 		pr_err("irq: could not create irq-domain\n");
@@ -626,6 +624,108 @@ void __init s3c24xx_init_irq(void)
 	s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
 }
 
+#ifdef CONFIG_CPU_S3C2412
+static struct s3c_irq_data init_s3c2412base[32] = {
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT0 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT1 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT2 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT3 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
+	{ .type = S3C_IRQTYPE_NONE, }, /* reserved */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TICK */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* WDT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* LCD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* SDI/CF */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
+	{ .type = S3C_IRQTYPE_NONE, }, /* reserved */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBH */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* IIC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* RTC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
+};
+
+static struct s3c_irq_data init_s3c2412eint[32] = {
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 0 }, /* EINT0 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 1 }, /* EINT1 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 2 }, /* EINT2 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 3 }, /* EINT3 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT4 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT5 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT6 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 4 }, /* EINT7 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT8 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT9 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT10 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT11 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT12 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT13 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT14 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT15 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT16 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT17 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT18 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT19 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT20 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT21 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT22 */
+	{ .type = S3C_IRQTYPE_EINT, .parent_irq = 5 }, /* EINT23 */
+};
+
+static struct s3c_irq_data init_s3c2412subint[32] = {
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
+	{ .type = S3C_IRQTYPE_NONE, },
+	{ .type = S3C_IRQTYPE_NONE, },
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* SDI */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 21 }, /* CF */
+};
+
+void s3c2412_init_irq(void)
+{
+	struct s3c_irq_intc *main_intc;
+
+	pr_info("S3C2412: IRQ Support\n");
+
+#ifdef CONFIG_FIQ
+	init_FIQ(FIQ_START);
+#endif
+
+	main_intc = s3c24xx_init_intc(NULL, &init_s3c2412base[0], NULL, 0x4a000000);
+	if (IS_ERR(main_intc)) {
+		pr_err("irq: could not create main interrupt controller\n");
+		return;
+	}
+
+	s3c24xx_init_intc(NULL, &init_s3c2412eint[0], main_intc, 0x560000a4);
+	s3c24xx_init_intc(NULL, &init_s3c2412subint[0], main_intc, 0x4a000018);
+}
+#endif
+
 #ifdef CONFIG_CPU_S3C2416
 static struct s3c_irq_data init_s3c2416base[32] = {
 	{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
@@ -729,6 +829,154 @@ void __init s3c2416_init_irq(void)
 
 #endif
 
+#ifdef CONFIG_CPU_S3C2440
+static struct s3c_irq_data init_s3c2440base[32] = {
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TICK */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* LCD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SDI */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* NFCON */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBH */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* IIC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* RTC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
+};
+
+static struct s3c_irq_data init_s3c2440subint[32] = {
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* TC */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* ADC */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
+};
+
+void __init s3c2440_init_irq(void)
+{
+	struct s3c_irq_intc *main_intc;
+
+	pr_info("S3C2440: IRQ Support\n");
+
+#ifdef CONFIG_FIQ
+	init_FIQ(FIQ_START);
+#endif
+
+	main_intc = s3c24xx_init_intc(NULL, &init_s3c2440base[0], NULL, 0x4a000000);
+	if (IS_ERR(main_intc)) {
+		pr_err("irq: could not create main interrupt controller\n");
+		return;
+	}
+
+	s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
+	s3c24xx_init_intc(NULL, &init_s3c2440subint[0], main_intc, 0x4a000018);
+}
+#endif
+
+#ifdef CONFIG_CPU_S3C2442
+static struct s3c_irq_data init_s3c2442base[32] = {
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TICK */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* WDT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* LCD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* DMA3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SDI */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* NFCON */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBH */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* IIC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* RTC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
+};
+
+static struct s3c_irq_data init_s3c2442subint[32] = {
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* TC */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* ADC */
+};
+
+void __init s3c2442_init_irq(void)
+{
+	struct s3c_irq_intc *main_intc;
+
+	pr_info("S3C2442: IRQ Support\n");
+
+#ifdef CONFIG_FIQ
+	init_FIQ(FIQ_START);
+#endif
+
+	main_intc = s3c24xx_init_intc(NULL, &init_s3c2442base[0], NULL, 0x4a000000);
+	if (IS_ERR(main_intc)) {
+		pr_err("irq: could not create main interrupt controller\n");
+		return;
+	}
+
+	s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
+	s3c24xx_init_intc(NULL, &init_s3c2442subint[0], main_intc, 0x4a000018);
+}
+#endif
+
 #ifdef CONFIG_CPU_S3C2443
 static struct s3c_irq_data init_s3c2443base[32] = {
 	{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */

arch/arm/mach-s3c24xx/mach-anubis.c

@@ -445,7 +445,7 @@ MACHINE_START(ANUBIS, "Simtec-Anubis")
 	.atag_offset	= 0x100,
 	.map_io		= anubis_map_io,
 	.init_machine	= anubis_init,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-at2440evb.c

@@ -211,7 +211,7 @@ MACHINE_START(AT2440EVB, "AT2440EVB")
 	.atag_offset	= 0x100,
 	.map_io		= at2440evb_map_io,
 	.init_machine	= at2440evb_init,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-gta02.c

@@ -589,7 +589,7 @@ MACHINE_START(NEO1973_GTA02, "GTA02")
 	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
 	.atag_offset	= 0x100,
 	.map_io		= gta02_map_io,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2442_init_irq,
 	.init_machine	= gta02_machine_init,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,

arch/arm/mach-s3c24xx/mach-jive.c

@@ -660,7 +660,7 @@ MACHINE_START(JIVE, "JIVE")
 	/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 	.atag_offset	= 0x100,
 
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2412_init_irq,
 	.map_io		= jive_map_io,
 	.init_machine	= jive_machine_init,
 	.init_time	= samsung_timer_init,

arch/arm/mach-s3c24xx/mach-mini2440.c

@@ -688,7 +688,7 @@ MACHINE_START(MINI2440, "MINI2440")
 	.atag_offset	= 0x100,
 	.map_io		= mini2440_map_io,
 	.init_machine	= mini2440_init,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-nexcoder.c

@@ -152,7 +152,7 @@ MACHINE_START(NEXCODER_2440, "NexVision - Nexcoder 2440")
 	.atag_offset	= 0x100,
 	.map_io		= nexcoder_map_io,
 	.init_machine	= nexcoder_init,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,
 MACHINE_END

arch/arm/mach-s3c24xx/mach-osiris.c

@@ -426,7 +426,7 @@ MACHINE_START(OSIRIS, "Simtec-OSIRIS")
 	/* Maintainer: Ben Dooks <ben@simtec.co.uk> */
 	.atag_offset	= 0x100,
 	.map_io		= osiris_map_io,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.init_machine	= osiris_init,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,

arch/arm/mach-s3c24xx/mach-rx1950.c

@@ -813,7 +813,7 @@ MACHINE_START(RX1950, "HP iPAQ RX1950")
 	.atag_offset = 0x100,
 	.map_io = rx1950_map_io,
 	.reserve	= rx1950_reserve,
-	.init_irq = s3c24xx_init_irq,
+	.init_irq	= s3c2442_init_irq,
 	.init_machine = rx1950_init_machine,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,

arch/arm/mach-s3c24xx/mach-rx3715.c

@@ -190,11 +190,6 @@ static void __init rx3715_reserve(void)
 	memblock_reserve(0x30081000, 0x1000);
 }
 
-static void __init rx3715_init_irq(void)
-{
-	s3c24xx_init_irq();
-}
-
 static void __init rx3715_init_machine(void)
 {
 #ifdef CONFIG_PM_H1940
@@ -212,7 +207,7 @@ MACHINE_START(RX3715, "IPAQ-RX3715")
 	.atag_offset	= 0x100,
 	.map_io		= rx3715_map_io,
 	.reserve	= rx3715_reserve,
-	.init_irq	= rx3715_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.init_machine	= rx3715_init_machine,
 	.init_time	= samsung_timer_init,
 	.restart	= s3c244x_restart,

arch/arm/mach-s3c24xx/mach-smdk2413.c

@@ -130,7 +130,7 @@ MACHINE_START(S3C2413, "S3C2413")
 	.atag_offset	= 0x100,
 
 	.fixup		= smdk2413_fixup,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2412_init_irq,
 	.map_io		= smdk2413_map_io,
 	.init_machine	= smdk2413_machine_init,
 	.init_time	= samsung_timer_init,
@@ -142,7 +142,7 @@ MACHINE_START(SMDK2412, "SMDK2412")
 	.atag_offset	= 0x100,
 
 	.fixup		= smdk2413_fixup,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2412_init_irq,
 	.map_io		= smdk2413_map_io,
 	.init_machine	= smdk2413_machine_init,
 	.init_time	= samsung_timer_init,
@@ -154,7 +154,7 @@ MACHINE_START(SMDK2413, "SMDK2413")
 	.atag_offset	= 0x100,
 
 	.fixup		= smdk2413_fixup,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2412_init_irq,
 	.map_io		= smdk2413_map_io,
 	.init_machine	= smdk2413_machine_init,
 	.init_time	= samsung_timer_init,

arch/arm/mach-s3c24xx/mach-smdk2440.c

@@ -177,7 +177,7 @@ MACHINE_START(S3C2440, "SMDK2440")
 	/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 	.atag_offset	= 0x100,
 
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2440_init_irq,
 	.map_io		= smdk2440_map_io,
 	.init_machine	= smdk2440_machine_init,
 	.init_time	= samsung_timer_init,

arch/arm/mach-s3c24xx/mach-vstms.c

@@ -158,7 +158,7 @@ MACHINE_START(VSTMS, "VSTMS")
 	.atag_offset	= 0x100,
 
 	.fixup		= vstms_fixup,
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2412_init_irq,
 	.init_machine	= vstms_init,
 	.map_io		= vstms_map_io,
 	.init_time	= samsung_timer_init,

arch/arm/mach-s3c24xx/pm-s3c2412.c

@@ -29,6 +29,7 @@
 
 #include <plat/cpu.h>
 #include <plat/pm.h>
+#include <plat/wakeup-mask.h>
 
 #include "regs-dsc.h"
 #include "s3c2412-power.h"
@@ -51,8 +52,15 @@ static int s3c2412_cpu_suspend(unsigned long arg)
 	return 1; /* Aborting suspend */
 }
 
+/* mapping of interrupts to parts of the wakeup mask */
+static struct samsung_wakeup_mask wake_irqs[] = {
+	{ .irq = IRQ_RTC,	.bit = S3C2412_PWRCFG_RTC_MASKIRQ, },
+};
+
 static void s3c2412_pm_prepare(void)
 {
+	samsung_sync_wakemask(S3C2412_PWRCFG,
+			      wake_irqs, ARRAY_SIZE(wake_irqs));
 }
 
 static int s3c2412_pm_add(struct device *dev, struct subsys_interface *sif)

arch/arm/plat-samsung/include/plat/cpu.h

@@ -23,6 +23,9 @@ extern unsigned long samsung_cpu_id;
 #define S3C24XX_CPU_ID		0x32400000
 #define S3C24XX_CPU_MASK	0xFFF00000
 
+#define S3C2412_CPU_ID		0x32412000
+#define S3C2412_CPU_MASK	0xFFFFF000
+
 #define S3C6400_CPU_ID		0x36400000
 #define S3C6410_CPU_ID		0x36410000
 #define S3C64XX_CPU_MASK	0xFFFFF000
@@ -53,6 +56,7 @@ static inline int is_samsung_##name(void)	\
 }
 
 IS_SAMSUNG_CPU(s3c24xx, S3C24XX_CPU_ID, S3C24XX_CPU_MASK)
+IS_SAMSUNG_CPU(s3c2412, S3C2412_CPU_ID, S3C2412_CPU_MASK)
 IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK)
 IS_SAMSUNG_CPU(s3c6410, S3C6410_CPU_ID, S3C64XX_CPU_MASK)
 IS_SAMSUNG_CPU(s5p6440, S5P6440_CPU_ID, S5P64XX_CPU_MASK)
@@ -74,6 +78,12 @@ IS_SAMSUNG_CPU(exynos5440, EXYNOS5440_SOC_ID, EXYNOS5_SOC_MASK)
 # define soc_is_s3c24xx()	0
 #endif
 
+#if defined(CONFIG_CPU_S3C2412)
+# define soc_is_s3c2412()	is_samsung_s3c2412()
+#else
+# define soc_is_s3c2412()	0
+#endif
+
 #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
 # define soc_is_s3c64xx()	(is_samsung_s3c6400() || is_samsung_s3c6410())
 #else

drivers/gpio/gpio-samsung.c

@@ -1122,8 +1122,12 @@ int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
 #ifdef CONFIG_PLAT_S3C24XX
 static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset)
 {
-	if (offset < 4)
-		return IRQ_EINT0 + offset;
+	if (offset < 4) {
+		if (soc_is_s3c2412())
+			return IRQ_EINT0_2412 + offset;
+		else
+			return IRQ_EINT0 + offset;
+	}
 
 	if (offset < 8)
 		return IRQ_EINT4 + offset - 4;