arch/arm/mach-msm/irq-vic.c - kernel/panda - Git at Google

 /*
  * Copyright (C) 2007 Google, Inc.
  * Copyright (c) 2009, Code Aurora Forum. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
  * may be copied, distributed, and modified under those terms.
  *
  * 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.
  *
  */

 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/ptrace.h>
 #include <linux/timer.h>
 #include <linux/irq.h>
 #include <linux/io.h>

 #include <asm/cacheflush.h>

 #include <mach/hardware.h>

 #include <mach/msm_iomap.h>

 #include "smd_private.h"

 enum {
 	IRQ_DEBUG_SLEEP_INT_TRIGGER = 1U << 0,
 	IRQ_DEBUG_SLEEP_INT = 1U << 1,
 	IRQ_DEBUG_SLEEP_ABORT = 1U << 2,
 	IRQ_DEBUG_SLEEP = 1U << 3,
 	IRQ_DEBUG_SLEEP_REQUEST = 1U << 4,
 };
 static int msm_irq_debug_mask;
 module_param_named(debug_mask, msm_irq_debug_mask, int,
 		   S_IRUGO | S_IWUSR | S_IWGRP);

 #define VIC_REG(off) (MSM_VIC_BASE + (off))
 #define VIC_INT_TO_REG_ADDR(base, irq) (base + (irq / 32) * 4)
 #define VIC_INT_TO_REG_INDEX(irq) ((irq >> 5) & 3)

 #define VIC_INT_SELECT0     VIC_REG(0x0000)  /* 1: FIQ, 0: IRQ */
 #define VIC_INT_SELECT1     VIC_REG(0x0004)  /* 1: FIQ, 0: IRQ */
 #define VIC_INT_SELECT2     VIC_REG(0x0008)  /* 1: FIQ, 0: IRQ */
 #define VIC_INT_SELECT3     VIC_REG(0x000C)  /* 1: FIQ, 0: IRQ */
 #define VIC_INT_EN0         VIC_REG(0x0010)
 #define VIC_INT_EN1         VIC_REG(0x0014)
 #define VIC_INT_EN2         VIC_REG(0x0018)
 #define VIC_INT_EN3         VIC_REG(0x001C)
 #define VIC_INT_ENCLEAR0    VIC_REG(0x0020)
 #define VIC_INT_ENCLEAR1    VIC_REG(0x0024)
 #define VIC_INT_ENCLEAR2    VIC_REG(0x0028)
 #define VIC_INT_ENCLEAR3    VIC_REG(0x002C)
 #define VIC_INT_ENSET0      VIC_REG(0x0030)
 #define VIC_INT_ENSET1      VIC_REG(0x0034)
 #define VIC_INT_ENSET2      VIC_REG(0x0038)
 #define VIC_INT_ENSET3      VIC_REG(0x003C)
 #define VIC_INT_TYPE0       VIC_REG(0x0040)  /* 1: EDGE, 0: LEVEL  */
 #define VIC_INT_TYPE1       VIC_REG(0x0044)  /* 1: EDGE, 0: LEVEL  */
 #define VIC_INT_TYPE2       VIC_REG(0x0048)  /* 1: EDGE, 0: LEVEL  */
 #define VIC_INT_TYPE3       VIC_REG(0x004C)  /* 1: EDGE, 0: LEVEL  */
 #define VIC_INT_POLARITY0   VIC_REG(0x0050)  /* 1: NEG, 0: POS */
 #define VIC_INT_POLARITY1   VIC_REG(0x0054)  /* 1: NEG, 0: POS */
 #define VIC_INT_POLARITY2   VIC_REG(0x0058)  /* 1: NEG, 0: POS */
 #define VIC_INT_POLARITY3   VIC_REG(0x005C)  /* 1: NEG, 0: POS */
 #define VIC_NO_PEND_VAL     VIC_REG(0x0060)

 #if defined(CONFIG_ARCH_MSM_SCORPION)
 #define VIC_NO_PEND_VAL_FIQ VIC_REG(0x0064)
 #define VIC_INT_MASTEREN    VIC_REG(0x0068)  /* 1: IRQ, 2: FIQ     */
 #define VIC_CONFIG          VIC_REG(0x006C)  /* 1: USE SC VIC */
 #else
 #define VIC_INT_MASTEREN    VIC_REG(0x0064)  /* 1: IRQ, 2: FIQ     */
 #define VIC_PROTECTION      VIC_REG(0x006C)  /* 1: ENABLE          */
 #define VIC_CONFIG          VIC_REG(0x0068)  /* 1: USE ARM1136 VIC */
 #endif

 #define VIC_IRQ_STATUS0     VIC_REG(0x0080)
 #define VIC_IRQ_STATUS1     VIC_REG(0x0084)
 #define VIC_IRQ_STATUS2     VIC_REG(0x0088)
 #define VIC_IRQ_STATUS3     VIC_REG(0x008C)
 #define VIC_FIQ_STATUS0     VIC_REG(0x0090)
 #define VIC_FIQ_STATUS1     VIC_REG(0x0094)
 #define VIC_FIQ_STATUS2     VIC_REG(0x0098)
 #define VIC_FIQ_STATUS3     VIC_REG(0x009C)
 #define VIC_RAW_STATUS0     VIC_REG(0x00A0)
 #define VIC_RAW_STATUS1     VIC_REG(0x00A4)
 #define VIC_RAW_STATUS2     VIC_REG(0x00A8)
 #define VIC_RAW_STATUS3     VIC_REG(0x00AC)
 #define VIC_INT_CLEAR0      VIC_REG(0x00B0)
 #define VIC_INT_CLEAR1      VIC_REG(0x00B4)
 #define VIC_INT_CLEAR2      VIC_REG(0x00B8)
 #define VIC_INT_CLEAR3      VIC_REG(0x00BC)
 #define VIC_SOFTINT0        VIC_REG(0x00C0)
 #define VIC_SOFTINT1        VIC_REG(0x00C4)
 #define VIC_SOFTINT2        VIC_REG(0x00C8)
 #define VIC_SOFTINT3        VIC_REG(0x00CC)
 #define VIC_IRQ_VEC_RD      VIC_REG(0x00D0)  /* pending int # */
 #define VIC_IRQ_VEC_PEND_RD VIC_REG(0x00D4)  /* pending vector addr */
 #define VIC_IRQ_VEC_WR      VIC_REG(0x00D8)

 #if defined(CONFIG_ARCH_MSM_SCORPION)
 #define VIC_FIQ_VEC_RD      VIC_REG(0x00DC)
 #define VIC_FIQ_VEC_PEND_RD VIC_REG(0x00E0)
 #define VIC_FIQ_VEC_WR      VIC_REG(0x00E4)
 #define VIC_IRQ_IN_SERVICE  VIC_REG(0x00E8)
 #define VIC_IRQ_IN_STACK    VIC_REG(0x00EC)
 #define VIC_FIQ_IN_SERVICE  VIC_REG(0x00F0)
 #define VIC_FIQ_IN_STACK    VIC_REG(0x00F4)
 #define VIC_TEST_BUS_SEL    VIC_REG(0x00F8)
 #define VIC_IRQ_CTRL_CONFIG VIC_REG(0x00FC)
 #else
 #define VIC_IRQ_IN_SERVICE  VIC_REG(0x00E0)
 #define VIC_IRQ_IN_STACK    VIC_REG(0x00E4)
 #define VIC_TEST_BUS_SEL    VIC_REG(0x00E8)
 #endif

 #define VIC_VECTPRIORITY(n) VIC_REG(0x0200+((n) * 4))
 #define VIC_VECTADDR(n)     VIC_REG(0x0400+((n) * 4))

 #if defined(CONFIG_ARCH_MSM7X30)
 #define VIC_NUM_REGS	    4
 #else
 #define VIC_NUM_REGS	    2
 #endif

 #if VIC_NUM_REGS == 2
 #define DPRINT_REGS(base_reg, format, ...)	      			\
 	printk(KERN_INFO format " %x %x\n", ##__VA_ARGS__,		\
 			readl(base_reg ## 0), readl(base_reg ## 1))
 #define DPRINT_ARRAY(array, format, ...)				\
 	printk(KERN_INFO format " %x %x\n", ##__VA_ARGS__,		\
 			array[0], array[1])
 #elif VIC_NUM_REGS == 4
 #define DPRINT_REGS(base_reg, format, ...) \
 	printk(KERN_INFO format " %x %x %x %x\n", ##__VA_ARGS__,	\
 			readl(base_reg ## 0), readl(base_reg ## 1),	\
 			readl(base_reg ## 2), readl(base_reg ## 3))
 #define DPRINT_ARRAY(array, format, ...)				\
 	printk(KERN_INFO format " %x %x %x %x\n", ##__VA_ARGS__,	\
 			array[0], array[1],				\
 			array[2], array[3])
 #else
 #error "VIC_NUM_REGS set to illegal value"
 #endif

 static uint32_t msm_irq_smsm_wake_enable[2];
 static struct {
 	uint32_t int_en[2];
 	uint32_t int_type;
 	uint32_t int_polarity;
 	uint32_t int_select;
 } msm_irq_shadow_reg[VIC_NUM_REGS];
 static uint32_t msm_irq_idle_disable[VIC_NUM_REGS];

 #define SMSM_FAKE_IRQ (0xff)
 static uint8_t msm_irq_to_smsm[NR_IRQS] = {
 	[INT_MDDI_EXT] = 1,
 	[INT_MDDI_PRI] = 2,
 	[INT_MDDI_CLIENT] = 3,
 	[INT_USB_OTG] = 4,

 	[INT_PWB_I2C] = 5,
 	[INT_SDC1_0] = 6,
 	[INT_SDC1_1] = 7,
 	[INT_SDC2_0] = 8,

 	[INT_SDC2_1] = 9,
 	[INT_ADSP_A9_A11] = 10,
 	[INT_UART1] = 11,
 	[INT_UART2] = 12,

 	[INT_UART3] = 13,
 	[INT_UART1_RX] = 14,
 	[INT_UART2_RX] = 15,
 	[INT_UART3_RX] = 16,

 	[INT_UART1DM_IRQ] = 17,
 	[INT_UART1DM_RX] = 18,
 	[INT_KEYSENSE] = 19,
 #if !defined(CONFIG_ARCH_MSM7X30)
 	[INT_AD_HSSD] = 20,
 #endif

 	[INT_NAND_WR_ER_DONE] = 21,
 	[INT_NAND_OP_DONE] = 22,
 	[INT_TCHSCRN1] = 23,
 	[INT_TCHSCRN2] = 24,

 	[INT_TCHSCRN_SSBI] = 25,
 	[INT_USB_HS] = 26,
 	[INT_UART2DM_RX] = 27,
 	[INT_UART2DM_IRQ] = 28,

 	[INT_SDC4_1] = 29,
 	[INT_SDC4_0] = 30,
 	[INT_SDC3_1] = 31,
 	[INT_SDC3_0] = 32,

 	/* fake wakeup interrupts */
 	[INT_GPIO_GROUP1] = SMSM_FAKE_IRQ,
 	[INT_GPIO_GROUP2] = SMSM_FAKE_IRQ,
 	[INT_A9_M2A_0] = SMSM_FAKE_IRQ,
 	[INT_A9_M2A_1] = SMSM_FAKE_IRQ,
 	[INT_A9_M2A_5] = SMSM_FAKE_IRQ,
 	[INT_GP_TIMER_EXP] = SMSM_FAKE_IRQ,
 	[INT_DEBUG_TIMER_EXP] = SMSM_FAKE_IRQ,
 	[INT_ADSP_A11] = SMSM_FAKE_IRQ,
 #ifdef CONFIG_ARCH_QSD8X50
 	[INT_SIRC_0] = SMSM_FAKE_IRQ,
 	[INT_SIRC_1] = SMSM_FAKE_IRQ,
 #endif
 };

 static inline void msm_irq_write_all_regs(void __iomem *base, unsigned int val)
 {
 	int i;

 	for (i = 0; i < VIC_NUM_REGS; i++)
 		writel(val, base + (i * 4));
 }

 static void msm_irq_ack(struct irq_data *d)
 {
 	void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_CLEAR0, d->irq);
 	writel(1 << (d->irq & 31), reg);
 }

 static void msm_irq_mask(struct irq_data *d)
 {
 	void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_ENCLEAR0, d->irq);
 	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
 	uint32_t mask = 1UL << (d->irq & 31);
 	int smsm_irq = msm_irq_to_smsm[d->irq];

 	msm_irq_shadow_reg[index].int_en[0] &= ~mask;
 	writel(mask, reg);
 	if (smsm_irq == 0)
 		msm_irq_idle_disable[index] &= ~mask;
 	else {
 		mask = 1UL << (smsm_irq - 1);
 		msm_irq_smsm_wake_enable[0] &= ~mask;
 	}
 }

 static void msm_irq_unmask(struct irq_data *d)
 {
 	void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_ENSET0, d->irq);
 	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
 	uint32_t mask = 1UL << (d->irq & 31);
 	int smsm_irq = msm_irq_to_smsm[d->irq];

 	msm_irq_shadow_reg[index].int_en[0] |= mask;
 	writel(mask, reg);

 	if (smsm_irq == 0)
 		msm_irq_idle_disable[index] |= mask;
 	else {
 		mask = 1UL << (smsm_irq - 1);
 		msm_irq_smsm_wake_enable[0] |= mask;
 	}
 }

 static int msm_irq_set_wake(struct irq_data *d, unsigned int on)
 {
 	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
 	uint32_t mask = 1UL << (d->irq & 31);
 	int smsm_irq = msm_irq_to_smsm[d->irq];

 	if (smsm_irq == 0) {
 		printk(KERN_ERR "msm_irq_set_wake: bad wakeup irq %d\n", d->irq);
 		return -EINVAL;
 	}
 	if (on)
 		msm_irq_shadow_reg[index].int_en[1] |= mask;
 	else
 		msm_irq_shadow_reg[index].int_en[1] &= ~mask;

 	if (smsm_irq == SMSM_FAKE_IRQ)
 		return 0;

 	mask = 1UL << (smsm_irq - 1);
 	if (on)
 		msm_irq_smsm_wake_enable[1] |= mask;
 	else
 		msm_irq_smsm_wake_enable[1] &= ~mask;
 	return 0;
 }

 static int msm_irq_set_type(struct irq_data *d, unsigned int flow_type)
 {
 	void __iomem *treg = VIC_INT_TO_REG_ADDR(VIC_INT_TYPE0, d->irq);
 	void __iomem *preg = VIC_INT_TO_REG_ADDR(VIC_INT_POLARITY0, d->irq);
 	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
 	int b = 1 << (d->irq & 31);
 	uint32_t polarity;
 	uint32_t type;

 	polarity = msm_irq_shadow_reg[index].int_polarity;
 	if (flow_type & (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_LOW))
 		polarity |= b;
 	if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_HIGH))
 		polarity &= ~b;
 	writel(polarity, preg);
 	msm_irq_shadow_reg[index].int_polarity = polarity;

 	type = msm_irq_shadow_reg[index].int_type;
 	if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
 		type |= b;
 		__irq_set_handler_locked(d->irq, handle_edge_irq);
 	}
 	if (flow_type & (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW)) {
 		type &= ~b;
 		__irq_set_handler_locked(d->irq, handle_level_irq);
 	}
 	writel(type, treg);
 	msm_irq_shadow_reg[index].int_type = type;
 	return 0;
 }

 static struct irq_chip msm_irq_chip = {
 	.name          = "msm",
 	.irq_disable   = msm_irq_mask,
 	.irq_ack       = msm_irq_ack,
 	.irq_mask      = msm_irq_mask,
 	.irq_unmask    = msm_irq_unmask,
 	.irq_set_wake  = msm_irq_set_wake,
 	.irq_set_type  = msm_irq_set_type,
 };

 void __init msm_init_irq(void)
 {
 	unsigned n;

 	/* select level interrupts */
 	msm_irq_write_all_regs(VIC_INT_TYPE0, 0);

 	/* select highlevel interrupts */
 	msm_irq_write_all_regs(VIC_INT_POLARITY0, 0);

 	/* select IRQ for all INTs */
 	msm_irq_write_all_regs(VIC_INT_SELECT0, 0);

 	/* disable all INTs */
 	msm_irq_write_all_regs(VIC_INT_EN0, 0);

 	/* don't use vic */
 	writel(0, VIC_CONFIG);

 	/* enable interrupt controller */
 	writel(3, VIC_INT_MASTEREN);

 	for (n = 0; n < NR_MSM_IRQS; n++) {
 		irq_set_chip(n, &msm_irq_chip);
 		irq_set_handler(n, handle_level_irq);
 		set_irq_flags(n, IRQF_VALID);
 	}
 }
	/*
	* Copyright (C) 2007 Google, Inc.
	* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
	*
	* This software is licensed under the terms of the GNU General Public
	* License version 2, as published by the Free Software Foundation, and
	* may be copied, distributed, and modified under those terms.
	*
	* 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.
	*
	*/

	#include <linux/init.h>
	#include <linux/module.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/ptrace.h>
	#include <linux/timer.h>
	#include <linux/irq.h>
	#include <linux/io.h>

	#include <asm/cacheflush.h>

	#include <mach/hardware.h>

	#include <mach/msm_iomap.h>

	#include "smd_private.h"

	enum {
	IRQ_DEBUG_SLEEP_INT_TRIGGER = 1U << 0,
	IRQ_DEBUG_SLEEP_INT = 1U << 1,
	IRQ_DEBUG_SLEEP_ABORT = 1U << 2,
	IRQ_DEBUG_SLEEP = 1U << 3,
	IRQ_DEBUG_SLEEP_REQUEST = 1U << 4,
	};
	static int msm_irq_debug_mask;
	module_param_named(debug_mask, msm_irq_debug_mask, int,
	S_IRUGO \| S_IWUSR \| S_IWGRP);

	#define VIC_REG(off) (MSM_VIC_BASE + (off))
	#define VIC_INT_TO_REG_ADDR(base, irq) (base + (irq / 32) * 4)
	#define VIC_INT_TO_REG_INDEX(irq) ((irq >> 5) & 3)

	#define VIC_INT_SELECT0 VIC_REG(0x0000) /* 1: FIQ, 0: IRQ */
	#define VIC_INT_SELECT1 VIC_REG(0x0004) /* 1: FIQ, 0: IRQ */
	#define VIC_INT_SELECT2 VIC_REG(0x0008) /* 1: FIQ, 0: IRQ */
	#define VIC_INT_SELECT3 VIC_REG(0x000C) /* 1: FIQ, 0: IRQ */
	#define VIC_INT_EN0 VIC_REG(0x0010)
	#define VIC_INT_EN1 VIC_REG(0x0014)
	#define VIC_INT_EN2 VIC_REG(0x0018)
	#define VIC_INT_EN3 VIC_REG(0x001C)
	#define VIC_INT_ENCLEAR0 VIC_REG(0x0020)
	#define VIC_INT_ENCLEAR1 VIC_REG(0x0024)
	#define VIC_INT_ENCLEAR2 VIC_REG(0x0028)
	#define VIC_INT_ENCLEAR3 VIC_REG(0x002C)
	#define VIC_INT_ENSET0 VIC_REG(0x0030)
	#define VIC_INT_ENSET1 VIC_REG(0x0034)
	#define VIC_INT_ENSET2 VIC_REG(0x0038)
	#define VIC_INT_ENSET3 VIC_REG(0x003C)
	#define VIC_INT_TYPE0 VIC_REG(0x0040) /* 1: EDGE, 0: LEVEL */
	#define VIC_INT_TYPE1 VIC_REG(0x0044) /* 1: EDGE, 0: LEVEL */
	#define VIC_INT_TYPE2 VIC_REG(0x0048) /* 1: EDGE, 0: LEVEL */
	#define VIC_INT_TYPE3 VIC_REG(0x004C) /* 1: EDGE, 0: LEVEL */
	#define VIC_INT_POLARITY0 VIC_REG(0x0050) /* 1: NEG, 0: POS */
	#define VIC_INT_POLARITY1 VIC_REG(0x0054) /* 1: NEG, 0: POS */
	#define VIC_INT_POLARITY2 VIC_REG(0x0058) /* 1: NEG, 0: POS */
	#define VIC_INT_POLARITY3 VIC_REG(0x005C) /* 1: NEG, 0: POS */
	#define VIC_NO_PEND_VAL VIC_REG(0x0060)

	#if defined(CONFIG_ARCH_MSM_SCORPION)
	#define VIC_NO_PEND_VAL_FIQ VIC_REG(0x0064)
	#define VIC_INT_MASTEREN VIC_REG(0x0068) /* 1: IRQ, 2: FIQ */
	#define VIC_CONFIG VIC_REG(0x006C) /* 1: USE SC VIC */
	#else
	#define VIC_INT_MASTEREN VIC_REG(0x0064) /* 1: IRQ, 2: FIQ */
	#define VIC_PROTECTION VIC_REG(0x006C) /* 1: ENABLE */
	#define VIC_CONFIG VIC_REG(0x0068) /* 1: USE ARM1136 VIC */
	#endif

	#define VIC_IRQ_STATUS0 VIC_REG(0x0080)
	#define VIC_IRQ_STATUS1 VIC_REG(0x0084)
	#define VIC_IRQ_STATUS2 VIC_REG(0x0088)
	#define VIC_IRQ_STATUS3 VIC_REG(0x008C)
	#define VIC_FIQ_STATUS0 VIC_REG(0x0090)
	#define VIC_FIQ_STATUS1 VIC_REG(0x0094)
	#define VIC_FIQ_STATUS2 VIC_REG(0x0098)
	#define VIC_FIQ_STATUS3 VIC_REG(0x009C)
	#define VIC_RAW_STATUS0 VIC_REG(0x00A0)
	#define VIC_RAW_STATUS1 VIC_REG(0x00A4)
	#define VIC_RAW_STATUS2 VIC_REG(0x00A8)
	#define VIC_RAW_STATUS3 VIC_REG(0x00AC)
	#define VIC_INT_CLEAR0 VIC_REG(0x00B0)
	#define VIC_INT_CLEAR1 VIC_REG(0x00B4)
	#define VIC_INT_CLEAR2 VIC_REG(0x00B8)
	#define VIC_INT_CLEAR3 VIC_REG(0x00BC)
	#define VIC_SOFTINT0 VIC_REG(0x00C0)
	#define VIC_SOFTINT1 VIC_REG(0x00C4)
	#define VIC_SOFTINT2 VIC_REG(0x00C8)
	#define VIC_SOFTINT3 VIC_REG(0x00CC)
	#define VIC_IRQ_VEC_RD VIC_REG(0x00D0) /* pending int # */
	#define VIC_IRQ_VEC_PEND_RD VIC_REG(0x00D4) /* pending vector addr */
	#define VIC_IRQ_VEC_WR VIC_REG(0x00D8)

	#if defined(CONFIG_ARCH_MSM_SCORPION)
	#define VIC_FIQ_VEC_RD VIC_REG(0x00DC)
	#define VIC_FIQ_VEC_PEND_RD VIC_REG(0x00E0)
	#define VIC_FIQ_VEC_WR VIC_REG(0x00E4)
	#define VIC_IRQ_IN_SERVICE VIC_REG(0x00E8)
	#define VIC_IRQ_IN_STACK VIC_REG(0x00EC)
	#define VIC_FIQ_IN_SERVICE VIC_REG(0x00F0)
	#define VIC_FIQ_IN_STACK VIC_REG(0x00F4)
	#define VIC_TEST_BUS_SEL VIC_REG(0x00F8)
	#define VIC_IRQ_CTRL_CONFIG VIC_REG(0x00FC)
	#else
	#define VIC_IRQ_IN_SERVICE VIC_REG(0x00E0)
	#define VIC_IRQ_IN_STACK VIC_REG(0x00E4)
	#define VIC_TEST_BUS_SEL VIC_REG(0x00E8)
	#endif

	#define VIC_VECTPRIORITY(n) VIC_REG(0x0200+((n) * 4))
	#define VIC_VECTADDR(n) VIC_REG(0x0400+((n) * 4))

	#if defined(CONFIG_ARCH_MSM7X30)
	#define VIC_NUM_REGS 4
	#else
	#define VIC_NUM_REGS 2
	#endif

	#if VIC_NUM_REGS == 2
	#define DPRINT_REGS(base_reg, format, ...) \
	printk(KERN_INFO format " %x %x\n", ##__VA_ARGS__, \
	readl(base_reg ## 0), readl(base_reg ## 1))
	#define DPRINT_ARRAY(array, format, ...) \
	printk(KERN_INFO format " %x %x\n", ##__VA_ARGS__, \
	array[0], array[1])
	#elif VIC_NUM_REGS == 4
	#define DPRINT_REGS(base_reg, format, ...) \
	printk(KERN_INFO format " %x %x %x %x\n", ##__VA_ARGS__, \
	readl(base_reg ## 0), readl(base_reg ## 1), \
	readl(base_reg ## 2), readl(base_reg ## 3))
	#define DPRINT_ARRAY(array, format, ...) \
	printk(KERN_INFO format " %x %x %x %x\n", ##__VA_ARGS__, \
	array[0], array[1], \
	array[2], array[3])
	#else
	#error "VIC_NUM_REGS set to illegal value"
	#endif

	static uint32_t msm_irq_smsm_wake_enable[2];
	static struct {
	uint32_t int_en[2];
	uint32_t int_type;
	uint32_t int_polarity;
	uint32_t int_select;
	} msm_irq_shadow_reg[VIC_NUM_REGS];
	static uint32_t msm_irq_idle_disable[VIC_NUM_REGS];

	#define SMSM_FAKE_IRQ (0xff)
	static uint8_t msm_irq_to_smsm[NR_IRQS] = {
	[INT_MDDI_EXT] = 1,
	[INT_MDDI_PRI] = 2,
	[INT_MDDI_CLIENT] = 3,
	[INT_USB_OTG] = 4,

	[INT_PWB_I2C] = 5,
	[INT_SDC1_0] = 6,
	[INT_SDC1_1] = 7,
	[INT_SDC2_0] = 8,

	[INT_SDC2_1] = 9,
	[INT_ADSP_A9_A11] = 10,
	[INT_UART1] = 11,
	[INT_UART2] = 12,

	[INT_UART3] = 13,
	[INT_UART1_RX] = 14,
	[INT_UART2_RX] = 15,
	[INT_UART3_RX] = 16,

	[INT_UART1DM_IRQ] = 17,
	[INT_UART1DM_RX] = 18,
	[INT_KEYSENSE] = 19,
	#if !defined(CONFIG_ARCH_MSM7X30)
	[INT_AD_HSSD] = 20,
	#endif

	[INT_NAND_WR_ER_DONE] = 21,
	[INT_NAND_OP_DONE] = 22,
	[INT_TCHSCRN1] = 23,
	[INT_TCHSCRN2] = 24,

	[INT_TCHSCRN_SSBI] = 25,
	[INT_USB_HS] = 26,
	[INT_UART2DM_RX] = 27,
	[INT_UART2DM_IRQ] = 28,

	[INT_SDC4_1] = 29,
	[INT_SDC4_0] = 30,
	[INT_SDC3_1] = 31,
	[INT_SDC3_0] = 32,

	/* fake wakeup interrupts */
	[INT_GPIO_GROUP1] = SMSM_FAKE_IRQ,
	[INT_GPIO_GROUP2] = SMSM_FAKE_IRQ,
	[INT_A9_M2A_0] = SMSM_FAKE_IRQ,
	[INT_A9_M2A_1] = SMSM_FAKE_IRQ,
	[INT_A9_M2A_5] = SMSM_FAKE_IRQ,
	[INT_GP_TIMER_EXP] = SMSM_FAKE_IRQ,
	[INT_DEBUG_TIMER_EXP] = SMSM_FAKE_IRQ,
	[INT_ADSP_A11] = SMSM_FAKE_IRQ,
	#ifdef CONFIG_ARCH_QSD8X50
	[INT_SIRC_0] = SMSM_FAKE_IRQ,
	[INT_SIRC_1] = SMSM_FAKE_IRQ,
	#endif
	};

	static inline void msm_irq_write_all_regs(void __iomem *base, unsigned int val)
	{
	int i;

	for (i = 0; i < VIC_NUM_REGS; i++)
	writel(val, base + (i * 4));
	}

	static void msm_irq_ack(struct irq_data *d)
	{
	void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_CLEAR0, d->irq);
	writel(1 << (d->irq & 31), reg);
	}

	static void msm_irq_mask(struct irq_data *d)
	{
	void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_ENCLEAR0, d->irq);
	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
	uint32_t mask = 1UL << (d->irq & 31);
	int smsm_irq = msm_irq_to_smsm[d->irq];

	msm_irq_shadow_reg[index].int_en[0] &= ~mask;
	writel(mask, reg);
	if (smsm_irq == 0)
	msm_irq_idle_disable[index] &= ~mask;
	else {
	mask = 1UL << (smsm_irq - 1);
	msm_irq_smsm_wake_enable[0] &= ~mask;
	}
	}

	static void msm_irq_unmask(struct irq_data *d)
	{
	void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_ENSET0, d->irq);
	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
	uint32_t mask = 1UL << (d->irq & 31);
	int smsm_irq = msm_irq_to_smsm[d->irq];

	msm_irq_shadow_reg[index].int_en[0] \|= mask;
	writel(mask, reg);

	if (smsm_irq == 0)
	msm_irq_idle_disable[index] \|= mask;
	else {
	mask = 1UL << (smsm_irq - 1);
	msm_irq_smsm_wake_enable[0] \|= mask;
	}
	}

	static int msm_irq_set_wake(struct irq_data *d, unsigned int on)
	{
	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
	uint32_t mask = 1UL << (d->irq & 31);
	int smsm_irq = msm_irq_to_smsm[d->irq];

	if (smsm_irq == 0) {
	printk(KERN_ERR "msm_irq_set_wake: bad wakeup irq %d\n", d->irq);
	return -EINVAL;
	}
	if (on)
	msm_irq_shadow_reg[index].int_en[1] \|= mask;
	else
	msm_irq_shadow_reg[index].int_en[1] &= ~mask;

	if (smsm_irq == SMSM_FAKE_IRQ)
	return 0;

	mask = 1UL << (smsm_irq - 1);
	if (on)
	msm_irq_smsm_wake_enable[1] \|= mask;
	else
	msm_irq_smsm_wake_enable[1] &= ~mask;
	return 0;
	}

	static int msm_irq_set_type(struct irq_data *d, unsigned int flow_type)
	{
	void __iomem *treg = VIC_INT_TO_REG_ADDR(VIC_INT_TYPE0, d->irq);
	void __iomem *preg = VIC_INT_TO_REG_ADDR(VIC_INT_POLARITY0, d->irq);
	unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
	int b = 1 << (d->irq & 31);
	uint32_t polarity;
	uint32_t type;

	polarity = msm_irq_shadow_reg[index].int_polarity;
	if (flow_type & (IRQF_TRIGGER_FALLING \| IRQF_TRIGGER_LOW))
	polarity \|= b;
	if (flow_type & (IRQF_TRIGGER_RISING \| IRQF_TRIGGER_HIGH))
	polarity &= ~b;
	writel(polarity, preg);
	msm_irq_shadow_reg[index].int_polarity = polarity;

	type = msm_irq_shadow_reg[index].int_type;
	if (flow_type & (IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING)) {
	type \|= b;
	__irq_set_handler_locked(d->irq, handle_edge_irq);
	}
	if (flow_type & (IRQF_TRIGGER_HIGH \| IRQF_TRIGGER_LOW)) {
	type &= ~b;
	__irq_set_handler_locked(d->irq, handle_level_irq);
	}
	writel(type, treg);
	msm_irq_shadow_reg[index].int_type = type;
	return 0;
	}

	static struct irq_chip msm_irq_chip = {
	.name = "msm",
	.irq_disable = msm_irq_mask,
	.irq_ack = msm_irq_ack,
	.irq_mask = msm_irq_mask,
	.irq_unmask = msm_irq_unmask,
	.irq_set_wake = msm_irq_set_wake,
	.irq_set_type = msm_irq_set_type,
	};

	void __init msm_init_irq(void)
	{
	unsigned n;

	/* select level interrupts */
	msm_irq_write_all_regs(VIC_INT_TYPE0, 0);

	/* select highlevel interrupts */
	msm_irq_write_all_regs(VIC_INT_POLARITY0, 0);

	/* select IRQ for all INTs */
	msm_irq_write_all_regs(VIC_INT_SELECT0, 0);

	/* disable all INTs */
	msm_irq_write_all_regs(VIC_INT_EN0, 0);

	/* don't use vic */
	writel(0, VIC_CONFIG);

	/* enable interrupt controller */
	writel(3, VIC_INT_MASTEREN);

	for (n = 0; n < NR_MSM_IRQS; n++) {
	irq_set_chip(n, &msm_irq_chip);
	irq_set_handler(n, handle_level_irq);
	set_irq_flags(n, IRQF_VALID);
	}
	}