13 files changed, 2051 insertions, 1808 deletions

diff --git a/drivers/sh/Kconfig b/drivers/sh/Kconfig
index e01ae42774a..f168a615996 100644
--- a/drivers/sh/Kconfig
+++ b/drivers/sh/Kconfig
@@ -1,33 +1,5 @@
-config INTC_USERIMASK
-	bool "Userspace interrupt masking support"
-	depends on ARCH_SHMOBILE || (SUPERH && CPU_SH4A)
-	help
-	  This enables support for hardware-assisted userspace hardirq
-	  masking.
+menu "SuperH / SH-Mobile Driver Options"
 
-	  SH-4A and newer interrupt blocks all support a special shadowed
-	  page with all non-masking registers obscured when mapped in to
-	  userspace. This is primarily for use by userspace device
-	  drivers that are using special priority levels.
+source "drivers/sh/intc/Kconfig"
 
-	  If in doubt, say N.
-
-config INTC_BALANCING
-	bool "Hardware IRQ balancing support"
-	depends on SMP && SUPERH && CPU_SHX3
-	help
-	  This enables support for IRQ auto-distribution mode on SH-X3
-	  SMP parts. All of the balancing and CPU wakeup decisions are
-	  taken care of automatically by hardware for distributed
-	  vectors.
-
-	  If in doubt, say N.
-
-config INTC_MAPPING_DEBUG
-	bool "Expose IRQ to per-controller id mapping via debugfs"
-	depends on DEBUG_FS
-	help
-	  This will create a debugfs entry for showing the relationship
-	  between system IRQs and the per-controller id tables.
-
-	  If in doubt, say N.
+endmenu
diff --git a/drivers/sh/Makefile b/drivers/sh/Makefile
index 08fc653a825..50dd5a65f72 100644
--- a/drivers/sh/Makefile
+++ b/drivers/sh/Makefile
@@ -1,7 +1,7 @@
 #
 # Makefile for the SuperH specific drivers.
 #
-obj-y	:= clk.o intc.o
+obj-y	:= clk.o intc/
 
 obj-$(CONFIG_SUPERHYWAY)	+= superhyway/
 obj-$(CONFIG_MAPLE)		+= maple/
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c
deleted file mode 100644
index d4325c70cf6..00000000000
--- a/drivers/sh/intc.c
+++ /dev/null
@@ -1,1776 +0,0 @@
-/*
- * Shared interrupt handling code for IPR and INTC2 types of IRQs.
- *
- * Copyright (C) 2007, 2008 Magnus Damm
- * Copyright (C) 2009, 2010 Paul Mundt
- *
- * Based on intc2.c and ipr.c
- *
- * Copyright (C) 1999  Niibe Yutaka & Takeshi Yaegashi
- * Copyright (C) 2000  Kazumoto Kojima
- * Copyright (C) 2001  David J. Mckay (david.mckay@st.com)
- * Copyright (C) 2003  Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
- * Copyright (C) 2005, 2006  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/sh_intc.h>
-#include <linux/sysdev.h>
-#include <linux/list.h>
-#include <linux/topology.h>
-#include <linux/bitmap.h>
-#include <linux/cpumask.h>
-#include <linux/spinlock.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/radix-tree.h>
-#include <linux/mutex.h>
-#include <linux/rcupdate.h>
-#include <asm/sizes.h>
-
-#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \
-	((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \
-	 ((addr_e) << 16) | ((addr_d << 24)))
-
-#define _INTC_SHIFT(h) (h & 0x1f)
-#define _INTC_WIDTH(h) ((h >> 5) & 0xf)
-#define _INTC_FN(h) ((h >> 9) & 0xf)
-#define _INTC_MODE(h) ((h >> 13) & 0x7)
-#define _INTC_ADDR_E(h) ((h >> 16) & 0xff)
-#define _INTC_ADDR_D(h) ((h >> 24) & 0xff)
-
-struct intc_handle_int {
-	unsigned int irq;
-	unsigned long handle;
-};
-
-struct intc_window {
-	phys_addr_t phys;
-	void __iomem *virt;
-	unsigned long size;
-};
-
-struct intc_map_entry {
-	intc_enum enum_id;
-	struct intc_desc_int *desc;
-};
-
-struct intc_subgroup_entry {
-	unsigned int pirq;
-	intc_enum enum_id;
-	unsigned long handle;
-};
-
-struct intc_desc_int {
-	struct list_head list;
-	struct sys_device sysdev;
-	struct radix_tree_root tree;
-	pm_message_t state;
-	spinlock_t lock;
-	unsigned int index;
-	unsigned long *reg;
-#ifdef CONFIG_SMP
-	unsigned long *smp;
-#endif
-	unsigned int nr_reg;
-	struct intc_handle_int *prio;
-	unsigned int nr_prio;
-	struct intc_handle_int *sense;
-	unsigned int nr_sense;
-	struct intc_window *window;
-	unsigned int nr_windows;
-	struct irq_chip chip;
-};
-
-static LIST_HEAD(intc_list);
-static unsigned int nr_intc_controllers;
-
-/*
- * The intc_irq_map provides a global map of bound IRQ vectors for a
- * given platform. Allocation of IRQs are either static through the CPU
- * vector map, or dynamic in the case of board mux vectors or MSI.
- *
- * As this is a central point for all IRQ controllers on the system,
- * each of the available sources are mapped out here. This combined with
- * sparseirq makes it quite trivial to keep the vector map tightly packed
- * when dynamically creating IRQs, as well as tying in to otherwise
- * unused irq_desc positions in the sparse array.
- */
-static DECLARE_BITMAP(intc_irq_map, NR_IRQS);
-static struct intc_map_entry intc_irq_xlate[NR_IRQS];
-static DEFINE_SPINLOCK(vector_lock);
-static DEFINE_SPINLOCK(xlate_lock);
-
-#ifdef CONFIG_SMP
-#define IS_SMP(x) x.smp
-#define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c))
-#define SMP_NR(d, x) ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1)
-#else
-#define IS_SMP(x) 0
-#define INTC_REG(d, x, c) (d->reg[(x)])
-#define SMP_NR(d, x) 1
-#endif
-
-static unsigned int intc_prio_level[NR_IRQS];	/* for now */
-static unsigned int default_prio_level = 2;	/* 2 - 16 */
-static unsigned long ack_handle[NR_IRQS];
-#ifdef CONFIG_INTC_BALANCING
-static unsigned long dist_handle[NR_IRQS];
-#endif
-
-struct intc_virq_list {
-	unsigned int irq;
-	struct intc_virq_list *next;
-};
-
-#define for_each_virq(entry, head) \
-	for (entry = head; entry; entry = entry->next)
-
-static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
-{
-	struct irq_chip *chip = get_irq_chip(irq);
-
-	return container_of(chip, struct intc_desc_int, chip);
-}
-
-static void intc_redirect_irq(unsigned int irq, struct irq_desc *desc)
-{
-	generic_handle_irq((unsigned int)get_irq_data(irq));
-}
-
-static inline void activate_irq(int irq)
-{
-#ifdef CONFIG_ARM
-	/* ARM requires an extra step to clear IRQ_NOREQUEST, which it
-	 * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
-	 */
-	set_irq_flags(irq, IRQF_VALID);
-#else
-	/* same effect on other architectures */
-	set_irq_noprobe(irq);
-#endif
-}
-
-static unsigned long intc_phys_to_virt(struct intc_desc_int *d,
-				       unsigned long address)
-{
-	struct intc_window *window;
-	int k;
-
-	/* scan through physical windows and convert address */
-	for (k = 0; k < d->nr_windows; k++) {
-		window = d->window + k;
-
-		if (address < window->phys)
-			continue;
-
-		if (address >= (window->phys + window->size))
-			continue;
-
-		address -= window->phys;
-		address += (unsigned long)window->virt;
-
-		return address;
-	}
-
-	/* no windows defined, register must be 1:1 mapped virt:phys */
-	return address;
-}
-
-static unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address)
-{
-	unsigned int k;
-
-	address = intc_phys_to_virt(d, address);
-
-	for (k = 0; k < d->nr_reg; k++) {
-		if (d->reg[k] == address)
-			return k;
-	}
-
-	BUG();
-	return 0;
-}
-
-static inline unsigned int set_field(unsigned int value,
-				     unsigned int field_value,
-				     unsigned int handle)
-{
-	unsigned int width = _INTC_WIDTH(handle);
-	unsigned int shift = _INTC_SHIFT(handle);
-
-	value &= ~(((1 << width) - 1) << shift);
-	value |= field_value << shift;
-	return value;
-}
-
-static inline unsigned long get_field(unsigned int value, unsigned int handle)
-{
-	unsigned int width = _INTC_WIDTH(handle);
-	unsigned int shift = _INTC_SHIFT(handle);
-	unsigned int mask = ((1 << width) - 1) << shift;
-
-	return (value & mask) >> shift;
-}
-
-static unsigned long test_8(unsigned long addr, unsigned long h,
-			    unsigned long ignore)
-{
-	return get_field(__raw_readb(addr), h);
-}
-
-static unsigned long test_16(unsigned long addr, unsigned long h,
-			     unsigned long ignore)
-{
-	return get_field(__raw_readw(addr), h);
-}
-
-static unsigned long test_32(unsigned long addr, unsigned long h,
-			     unsigned long ignore)
-{
-	return get_field(__raw_readl(addr), h);
-}
-
-static unsigned long write_8(unsigned long addr, unsigned long h,
-			     unsigned long data)
-{
-	__raw_writeb(set_field(0, data, h), addr);
-	(void)__raw_readb(addr);	/* Defeat write posting */
-	return 0;
-}
-
-static unsigned long write_16(unsigned long addr, unsigned long h,
-			      unsigned long data)
-{
-	__raw_writew(set_field(0, data, h), addr);
-	(void)__raw_readw(addr);	/* Defeat write posting */
-	return 0;
-}
-
-static unsigned long write_32(unsigned long addr, unsigned long h,
-			      unsigned long data)
-{
-	__raw_writel(set_field(0, data, h), addr);
-	(void)__raw_readl(addr);	/* Defeat write posting */
-	return 0;
-}
-
-static unsigned long modify_8(unsigned long addr, unsigned long h,
-			      unsigned long data)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	__raw_writeb(set_field(__raw_readb(addr), data, h), addr);
-	(void)__raw_readb(addr);	/* Defeat write posting */
-	local_irq_restore(flags);
-	return 0;
-}
-
-static unsigned long modify_16(unsigned long addr, unsigned long h,
-			       unsigned long data)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	__raw_writew(set_field(__raw_readw(addr), data, h), addr);
-	(void)__raw_readw(addr);	/* Defeat write posting */
-	local_irq_restore(flags);
-	return 0;
-}
-
-static unsigned long modify_32(unsigned long addr, unsigned long h,
-			       unsigned long data)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	__raw_writel(set_field(__raw_readl(addr), data, h), addr);
-	(void)__raw_readl(addr);	/* Defeat write posting */
-	local_irq_restore(flags);
-	return 0;
-}
-
-enum {
-	REG_FN_ERR = 0,
-	REG_FN_TEST_BASE = 1,
-	REG_FN_WRITE_BASE = 5,
-	REG_FN_MODIFY_BASE = 9
-};
-
-static unsigned long (*intc_reg_fns[])(unsigned long addr,
-				       unsigned long h,
-				       unsigned long data) = {
-	[REG_FN_TEST_BASE + 0] = test_8,
-	[REG_FN_TEST_BASE + 1] = test_16,
-	[REG_FN_TEST_BASE + 3] = test_32,
-	[REG_FN_WRITE_BASE + 0] = write_8,
-	[REG_FN_WRITE_BASE + 1] = write_16,
-	[REG_FN_WRITE_BASE + 3] = write_32,
-	[REG_FN_MODIFY_BASE + 0] = modify_8,
-	[REG_FN_MODIFY_BASE + 1] = modify_16,
-	[REG_FN_MODIFY_BASE + 3] = modify_32,
-};
-
-enum {	MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */
-	MODE_MASK_REG,       /* Bit(s) set -> interrupt disabled */
-	MODE_DUAL_REG,       /* Two registers, set bit to enable / disable */
-	MODE_PRIO_REG,       /* Priority value written to enable interrupt */
-	MODE_PCLR_REG,       /* Above plus all bits set to disable interrupt */
-};
-
-static unsigned long intc_mode_field(unsigned long addr,
-				     unsigned long handle,
-				     unsigned long (*fn)(unsigned long,
-						unsigned long,
-						unsigned long),
-				     unsigned int irq)
-{
-	return fn(addr, handle, ((1 << _INTC_WIDTH(handle)) - 1));
-}
-
-static unsigned long intc_mode_zero(unsigned long addr,
-				    unsigned long handle,
-				    unsigned long (*fn)(unsigned long,
-					       unsigned long,
-					       unsigned long),
-				    unsigned int irq)
-{
-	return fn(addr, handle, 0);
-}
-
-static unsigned long intc_mode_prio(unsigned long addr,
-				    unsigned long handle,
-				    unsigned long (*fn)(unsigned long,
-					       unsigned long,
-					       unsigned long),
-				    unsigned int irq)
-{
-	return fn(addr, handle, intc_prio_level[irq]);
-}
-
-static unsigned long (*intc_enable_fns[])(unsigned long addr,
-					  unsigned long handle,
-					  unsigned long (*fn)(unsigned long,
-						    unsigned long,
-						    unsigned long),
-					  unsigned int irq) = {
-	[MODE_ENABLE_REG] = intc_mode_field,
-	[MODE_MASK_REG] = intc_mode_zero,
-	[MODE_DUAL_REG] = intc_mode_field,
-	[MODE_PRIO_REG] = intc_mode_prio,
-	[MODE_PCLR_REG] = intc_mode_prio,
-};
-
-static unsigned long (*intc_disable_fns[])(unsigned long addr,
-				  unsigned long handle,
-				  unsigned long (*fn)(unsigned long,
-					     unsigned long,
-					     unsigned long),
-				  unsigned int irq) = {
-	[MODE_ENABLE_REG] = intc_mode_zero,
-	[MODE_MASK_REG] = intc_mode_field,
-	[MODE_DUAL_REG] = intc_mode_field,
-	[MODE_PRIO_REG] = intc_mode_zero,
-	[MODE_PCLR_REG] = intc_mode_field,
-};
-
-#ifdef CONFIG_INTC_BALANCING
-static inline void intc_balancing_enable(unsigned int irq)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	unsigned long handle = dist_handle[irq];
-	unsigned long addr;
-
-	if (irq_balancing_disabled(irq) || !handle)
-		return;
-
-	addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
-	intc_reg_fns[_INTC_FN(handle)](addr, handle, 1);
-}
-
-static inline void intc_balancing_disable(unsigned int irq)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	unsigned long handle = dist_handle[irq];
-	unsigned long addr;
-
-	if (irq_balancing_disabled(irq) || !handle)
-		return;
-
-	addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
-	intc_reg_fns[_INTC_FN(handle)](addr, handle, 0);
-}
-
-static unsigned int intc_dist_data(struct intc_desc *desc,
-				   struct intc_desc_int *d,
-				   intc_enum enum_id)
-{
-	struct intc_mask_reg *mr = desc->hw.mask_regs;
-	unsigned int i, j, fn, mode;
-	unsigned long reg_e, reg_d;
-
-	for (i = 0; mr && enum_id && i < desc->hw.nr_mask_regs; i++) {
-		mr = desc->hw.mask_regs + i;
-
-		/*
-		 * Skip this entry if there's no auto-distribution
-		 * register associated with it.
-		 */
-		if (!mr->dist_reg)
-			continue;
-
-		for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
-			if (mr->enum_ids[j] != enum_id)
-				continue;
-
-			fn = REG_FN_MODIFY_BASE;
-			mode = MODE_ENABLE_REG;
-			reg_e = mr->dist_reg;
-			reg_d = mr->dist_reg;
-
-			fn += (mr->reg_width >> 3) - 1;
-			return _INTC_MK(fn, mode,
-					intc_get_reg(d, reg_e),
-					intc_get_reg(d, reg_d),
-					1,
-					(mr->reg_width - 1) - j);
-		}
-	}
-
-	/*
-	 * It's possible we've gotten here with no distribution options
-	 * available for the IRQ in question, so we just skip over those.
-	 */
-	return 0;
-}
-#else
-static inline void intc_balancing_enable(unsigned int irq)
-{
-}
-
-static inline void intc_balancing_disable(unsigned int irq)
-{
-}
-#endif
-
-static inline void _intc_enable(unsigned int irq, unsigned long handle)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	unsigned long addr;
-	unsigned int cpu;
-
-	for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_E(handle)); cpu++) {
-#ifdef CONFIG_SMP
-		if (!cpumask_test_cpu(cpu, irq_to_desc(irq)->affinity))
-			continue;
-#endif
-		addr = INTC_REG(d, _INTC_ADDR_E(handle), cpu);
-		intc_enable_fns[_INTC_MODE(handle)](addr, handle, intc_reg_fns\
-						    [_INTC_FN(handle)], irq);
-	}
-
-	intc_balancing_enable(irq);
-}
-
-static void intc_enable(unsigned int irq)
-{
-	_intc_enable(irq, (unsigned long)get_irq_chip_data(irq));
-}
-
-static void intc_disable(unsigned int irq)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	unsigned long handle = (unsigned long)get_irq_chip_data(irq);
-	unsigned long addr;
-	unsigned int cpu;
-
-	intc_balancing_disable(irq);
-
-	for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_D(handle)); cpu++) {
-#ifdef CONFIG_SMP
-		if (!cpumask_test_cpu(cpu, irq_to_desc(irq)->affinity))
-			continue;
-#endif
-		addr = INTC_REG(d, _INTC_ADDR_D(handle), cpu);
-		intc_disable_fns[_INTC_MODE(handle)](addr, handle,intc_reg_fns\
-						     [_INTC_FN(handle)], irq);
-	}
-}
-
-static unsigned long
-(*intc_enable_noprio_fns[])(unsigned long addr,
-			    unsigned long handle,
-			    unsigned long (*fn)(unsigned long,
-					unsigned long,
-					unsigned long),
-			    unsigned int irq) = {
-	[MODE_ENABLE_REG] = intc_mode_field,
-	[MODE_MASK_REG] = intc_mode_zero,
-	[MODE_DUAL_REG] = intc_mode_field,
-	[MODE_PRIO_REG] = intc_mode_field,
-	[MODE_PCLR_REG] = intc_mode_field,
-};
-
-static void intc_enable_disable(struct intc_desc_int *d,
-				unsigned long handle, int do_enable)
-{
-	unsigned long addr;
-	unsigned int cpu;
-	unsigned long (*fn)(unsigned long, unsigned long,
-		   unsigned long (*)(unsigned long, unsigned long,
-				     unsigned long),
-		   unsigned int);
-
-	if (do_enable) {
-		for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_E(handle)); cpu++) {
-			addr = INTC_REG(d, _INTC_ADDR_E(handle), cpu);
-			fn = intc_enable_noprio_fns[_INTC_MODE(handle)];
-			fn(addr, handle, intc_reg_fns[_INTC_FN(handle)], 0);
-		}
-	} else {
-		for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_D(handle)); cpu++) {
-			addr = INTC_REG(d, _INTC_ADDR_D(handle), cpu);
-			fn = intc_disable_fns[_INTC_MODE(handle)];
-			fn(addr, handle, intc_reg_fns[_INTC_FN(handle)], 0);
-		}
-	}
-}
-
-static int intc_set_wake(unsigned int irq, unsigned int on)
-{
-	return 0; /* allow wakeup, but setup hardware in intc_suspend() */
-}
-
-#ifdef CONFIG_SMP
-/*
- * This is held with the irq desc lock held, so we don't require any
- * additional locking here at the intc desc level. The affinity mask is
- * later tested in the enable/disable paths.
- */
-static int intc_set_affinity(unsigned int irq, const struct cpumask *cpumask)
-{
-	if (!cpumask_intersects(cpumask, cpu_online_mask))
-		return -1;
-
-	cpumask_copy(irq_to_desc(irq)->affinity, cpumask);
-
-	return 0;
-}
-#endif
-
-static void intc_mask_ack(unsigned int irq)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	unsigned long handle = ack_handle[irq];
-	unsigned long addr;
-
-	intc_disable(irq);
-
-	/* read register and write zero only to the associated bit */
-	if (handle) {
-		addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
-		switch (_INTC_FN(handle)) {
-		case REG_FN_MODIFY_BASE + 0:	/* 8bit */
-			__raw_readb(addr);
-			__raw_writeb(0xff ^ set_field(0, 1, handle), addr);
-			break;
-		case REG_FN_MODIFY_BASE + 1:	/* 16bit */
-			__raw_readw(addr);
-			__raw_writew(0xffff ^ set_field(0, 1, handle), addr);
-			break;
-		case REG_FN_MODIFY_BASE + 3:	/* 32bit */
-			__raw_readl(addr);
-			__raw_writel(0xffffffff ^ set_field(0, 1, handle), addr);
-			break;
-		default:
-			BUG();
-			break;
-		}
-	}
-}
-
-static struct intc_handle_int *intc_find_irq(struct intc_handle_int *hp,
-					     unsigned int nr_hp,
-					     unsigned int irq)
-{
-	int i;
-
-	/*
-	 * this doesn't scale well, but...
-	 *
-	 * this function should only be used for cerain uncommon
-	 * operations such as intc_set_priority() and intc_set_sense()
-	 * and in those rare cases performance doesn't matter that much.
-	 * keeping the memory footprint low is more important.
-	 *
-	 * one rather simple way to speed this up and still keep the
-	 * memory footprint down is to make sure the array is sorted
-	 * and then perform a bisect to lookup the irq.
-	 */
-	for (i = 0; i < nr_hp; i++) {
-		if ((hp + i)->irq != irq)
-			continue;
-
-		return hp + i;
-	}
-
-	return NULL;
-}
-
-int intc_set_priority(unsigned int irq, unsigned int prio)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	struct intc_handle_int *ihp;
-
-	if (!intc_prio_level[irq] || prio <= 1)
-		return -EINVAL;
-
-	ihp = intc_find_irq(d->prio, d->nr_prio, irq);
-	if (ihp) {
-		if (prio >= (1 << _INTC_WIDTH(ihp->handle)))
-			return -EINVAL;
-
-		intc_prio_level[irq] = prio;
-
-		/*
-		 * only set secondary masking method directly
-		 * primary masking method is using intc_prio_level[irq]
-		 * priority level will be set during next enable()
-		 */
-		if (_INTC_FN(ihp->handle) != REG_FN_ERR)
-			_intc_enable(irq, ihp->handle);
-	}
-	return 0;
-}
-
-#define VALID(x) (x | 0x80)
-
-static unsigned char intc_irq_sense_table[IRQ_TYPE_SENSE_MASK + 1] = {
-	[IRQ_TYPE_EDGE_FALLING] = VALID(0),
-	[IRQ_TYPE_EDGE_RISING] = VALID(1),
-	[IRQ_TYPE_LEVEL_LOW] = VALID(2),
-	/* SH7706, SH7707 and SH7709 do not support high level triggered */
-#if !defined(CONFIG_CPU_SUBTYPE_SH7706) && \
-    !defined(CONFIG_CPU_SUBTYPE_SH7707) && \
-    !defined(CONFIG_CPU_SUBTYPE_SH7709)
-	[IRQ_TYPE_LEVEL_HIGH] = VALID(3),
-#endif
-};
-
-static int intc_set_sense(unsigned int irq, unsigned int type)
-{
-	struct intc_desc_int *d = get_intc_desc(irq);
-	unsigned char value = intc_irq_sense_table[type & IRQ_TYPE_SENSE_MASK];
-	struct intc_handle_int *ihp;
-	unsigned long addr;
-
-	if (!value)
-		return -EINVAL;
-
-	ihp = intc_find_irq(d->sense, d->nr_sense, irq);
-	if (ihp) {
-		addr = INTC_REG(d, _INTC_ADDR_E(ihp->handle), 0);
-		intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, value);
-	}
-	return 0;
-}
-
-static intc_enum __init intc_grp_id(struct intc_desc *desc,
-				    intc_enum enum_id)
-{
-	struct intc_group *g = desc->hw.groups;
-	unsigned int i, j;
-
-	for (i = 0; g && enum_id && i < desc->hw.nr_groups; i++) {
-		g = desc->hw.groups + i;
-
-		for (j = 0; g->enum_ids[j]; j++) {
-			if (g->enum_ids[j] != enum_id)
-				continue;
-
-			return g->enum_id;
-		}
-	}
-
-	return 0;
-}
-
-static unsigned int __init _intc_mask_data(struct intc_desc *desc,
-					   struct intc_desc_int *d,
-					   intc_enum enum_id,
-					   unsigned int *reg_idx,
-					   unsigned int *fld_idx)
-{
-	struct intc_mask_reg *mr = desc->hw.mask_regs;
-	unsigned int fn, mode;
-	unsigned long reg_e, reg_d;
-
-	while (mr && enum_id && *reg_idx < desc->hw.nr_mask_regs) {
-		mr = desc->hw.mask_regs + *reg_idx;
-
-		for (; *fld_idx < ARRAY_SIZE(mr->enum_ids); (*fld_idx)++) {
-			if (mr->enum_ids[*fld_idx] != enum_id)
-				continue;
-
-			if (mr->set_reg && mr->clr_reg) {
-				fn = REG_FN_WRITE_BASE;
-				mode = MODE_DUAL_REG;
-				reg_e = mr->clr_reg;
-				reg_d = mr->set_reg;
-			} else {
-				fn = REG_FN_MODIFY_BASE;
-				if (mr->set_reg) {
-					mode = MODE_ENABLE_REG;
-					reg_e = mr->set_reg;
-					reg_d = mr->set_reg;
-				} else {
-					mode = MODE_MASK_REG;
-					reg_e = mr->clr_reg;
-					reg_d = mr->clr_reg;
-				}
-			}
-
-			fn += (mr->reg_width >> 3) - 1;
-			return _INTC_MK(fn, mode,
-					intc_get_reg(d, reg_e),
-					intc_get_reg(d, reg_d),
-					1,
-					(mr->reg_width - 1) - *fld_idx);
-		}
-
-		*fld_idx = 0;
-		(*reg_idx)++;
-	}
-
-	return 0;
-}
-
-static unsigned int __init intc_mask_data(struct intc_desc *desc,
-					  struct intc_desc_int *d,
-					  intc_enum enum_id, int do_grps)
-{
-	unsigned int i = 0;
-	unsigned int j = 0;
-	unsigned int ret;
-
-	ret = _intc_mask_data(desc, d, enum_id, &i, &j);
-	if (ret)
-		return ret;
-
-	if (do_grps)
-		return intc_mask_data(desc, d, intc_grp_id(desc, enum_id), 0);
-
-	return 0;
-}
-
-static unsigned int __init _intc_prio_data(struct intc_desc *desc,
-					   struct intc_desc_int *d,
-					   intc_enum enum_id,
-					   unsigned int *reg_idx,
-					   unsigned int *fld_idx)
-{
-	struct intc_prio_reg *pr = desc->hw.prio_regs;
-	unsigned int fn, n, mode, bit;
-	unsigned long reg_e, reg_d;
-
-	while (pr && enum_id && *reg_idx < desc->hw.nr_prio_regs) {
-		pr = desc->hw.prio_regs + *reg_idx;
-
-		for (; *fld_idx < ARRAY_SIZE(pr->enum_ids); (*fld_idx)++) {
-			if (pr->enum_ids[*fld_idx] != enum_id)
-				continue;
-
-			if (pr->set_reg && pr->clr_reg) {
-				fn = REG_FN_WRITE_BASE;
-				mode = MODE_PCLR_REG;
-				reg_e = pr->set_reg;
-				reg_d = pr->clr_reg;
-			} else {
-				fn = REG_FN_MODIFY_BASE;
-				mode = MODE_PRIO_REG;
-				if (!pr->set_reg)
-					BUG();
-				reg_e = pr->set_reg;
-				reg_d = pr->set_reg;
-			}
-
-			fn += (pr->reg_width >> 3) - 1;
-			n = *fld_idx + 1;
-
-			BUG_ON(n * pr->field_width > pr->reg_width);
-
-			bit = pr->reg_width - (n * pr->field_width);
-
-			return _INTC_MK(fn, mode,
-					intc_get_reg(d, reg_e),
-					intc_get_reg(d, reg_d),
-					pr->field_width, bit);
-		}
-
-		*fld_idx = 0;
-		(*reg_idx)++;
-	}
-
-	return 0;
-}
-
-static unsigned int __init intc_prio_data(struct intc_desc *desc,
-					  struct intc_desc_int *d,
-					  intc_enum enum_id, int do_grps)
-{
-	unsigned int i = 0;
-	unsigned int j = 0;
-	unsigned int ret;
-
-	ret = _intc_prio_data(desc, d, enum_id, &i, &j);
-	if (ret)
-		return ret;
-
-	if (do_grps)
-		return intc_prio_data(desc, d, intc_grp_id(desc, enum_id), 0);
-
-	return 0;
-}
-
-static void __init intc_enable_disable_enum(struct intc_desc *desc,
-					    struct intc_desc_int *d,
-					    intc_enum enum_id, int enable)
-{
-	unsigned int i, j, data;
-
-	/* go through and enable/disable all mask bits */
-	i = j = 0;
-	do {
-		data = _intc_mask_data(desc, d, enum_id, &i, &j);
-		if (data)
-			intc_enable_disable(d, data, enable);
-		j++;
-	} while (data);
-
-	/* go through and enable/disable all priority fields */
-	i = j = 0;
-	do {
-		data = _intc_prio_data(desc, d, enum_id, &i, &j);
-		if (data)
-			intc_enable_disable(d, data, enable);
-
-		j++;
-	} while (data);
-}
-
-static unsigned int __init intc_ack_data(struct intc_desc *desc,
-					  struct intc_desc_int *d,
-					  intc_enum enum_id)
-{
-	struct intc_mask_reg *mr = desc->hw.ack_regs;
-	unsigned int i, j, fn, mode;
-	unsigned long reg_e, reg_d;
-
-	for (i = 0; mr && enum_id && i < desc->hw.nr_ack_regs; i++) {
-		mr = desc->hw.ack_regs + i;
-
-		for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
-			if (mr->enum_ids[j] != enum_id)
-				continue;
-
-			fn = REG_FN_MODIFY_BASE;
-			mode = MODE_ENABLE_REG;
-			reg_e = mr->set_reg;
-			reg_d = mr->set_reg;
-
-			fn += (mr->reg_width >> 3) - 1;
-			return _INTC_MK(fn, mode,
-					intc_get_reg(d, reg_e),
-					intc_get_reg(d, reg_d),
-					1,
-					(mr->reg_width - 1) - j);
-		}
-	}
-
-	return 0;
-}
-
-static unsigned int __init intc_sense_data(struct intc_desc *desc,
-					   struct intc_desc_int *d,
-					   intc_enum enum_id)
-{
-	struct intc_sense_reg *sr = desc->hw.sense_regs;
-	unsigned int i, j, fn, bit;
-
-	for (i = 0; sr && enum_id && i < desc->hw.nr_sense_regs; i++) {
-		sr = desc->hw.sense_regs + i;
-
-		for (j = 0; j < ARRAY_SIZE(sr->enum_ids); j++) {
-			if (sr->enum_ids[j] != enum_id)
-				continue;
-
-			fn = REG_FN_MODIFY_BASE;
-			fn += (sr->reg_width >> 3) - 1;
-
-			BUG_ON((j + 1) * sr->field_width > sr->reg_width);
-
-			bit = sr->reg_width - ((j + 1) * sr->field_width);
-
-			return _INTC_MK(fn, 0, intc_get_reg(d, sr->reg),
-					0, sr->field_width, bit);
-		}
-	}
-
-	return 0;
-}
-
-#define INTC_TAG_VIRQ_NEEDS_ALLOC	0
-
-int intc_irq_lookup(const char *chipname, intc_enum enum_id)
-{
-	struct intc_map_entry *ptr;
-	struct intc_desc_int *d;
-	int irq = -1;
-
-	list_for_each_entry(d, &intc_list, list) {
-		int tagged;
-
-		if (strcmp(d->chip.name, chipname) != 0)
-			continue;
-
-		/*
-		 * Catch early lookups for subgroup VIRQs that have not
-		 * yet been allocated an IRQ. This already includes a
-		 * fast-path out if the tree is untagged, so there is no
-		 * need to explicitly test the root tree.
-		 */
-		tagged = radix_tree_tag_get(&d->tree, enum_id,
-					    INTC_TAG_VIRQ_NEEDS_ALLOC);
-		if (unlikely(tagged))
-			break;
-
-		ptr = radix_tree_lookup(&d->tree, enum_id);
-		if (ptr) {
-			irq = ptr - intc_irq_xlate;
-			break;
-		}
-	}
-
-	return irq;
-}
-EXPORT_SYMBOL_GPL(intc_irq_lookup);
-
-static int add_virq_to_pirq(unsigned int irq, unsigned int virq)
-{
-	struct intc_virq_list **last, *entry;
-	struct irq_desc *desc = irq_to_desc(irq);
-
-	/* scan for duplicates */
-	last = (struct intc_virq_list **)&desc->handler_data;
-	for_each_virq(entry, desc->handler_data) {
-		if (entry->irq == virq)
-			return 0;
-		last = &entry->next;
-	}
-
-	entry = kzalloc(sizeof(struct intc_virq_list), GFP_ATOMIC);
-	if (!entry) {
-		pr_err("can't allocate VIRQ mapping for %d\n", virq);
-		return -ENOMEM;
-	}
-
-	entry->irq = virq;
-
-	*last = entry;
-
-	return 0;
-}
-
-static void intc_virq_handler(unsigned int irq, struct irq_desc *desc)
-{
-	struct intc_virq_list *entry, *vlist = get_irq_data(irq);
-	struct intc_desc_int *d = get_intc_desc(irq);
-
-	desc->chip->mask_ack(irq);
-
-	for_each_virq(entry, vlist) {
-		unsigned long addr, handle;
-
-		handle = (unsigned long)get_irq_data(entry->irq);
-		addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
-
-		if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
-			generic_handle_irq(entry->irq);
-	}
-
-	desc->chip->unmask(irq);
-}
-
-static unsigned long __init intc_subgroup_data(struct intc_subgroup *subgroup,
-					       struct intc_desc_int *d,
-					       unsigned int index)
-{
-	unsigned int fn = REG_FN_TEST_BASE + (subgroup->reg_width >> 3) - 1;
-
-	return _INTC_MK(fn, MODE_ENABLE_REG, intc_get_reg(d, subgroup->reg),
-			0, 1, (subgroup->reg_width - 1) - index);
-}
-
-static void __init intc_subgroup_init_one(struct intc_desc *desc,
-					  struct intc_desc_int *d,
-					  struct intc_subgroup *subgroup)
-{
-	struct intc_map_entry *mapped;
-	unsigned int pirq;
-	unsigned long flags;
-	int i;
-
-	mapped = radix_tree_lookup(&d->tree, subgroup->parent_id);
-	if (!mapped) {
-		WARN_ON(1);
-		return;
-	}
-
-	pirq = mapped - intc_irq_xlate;
-
-	spin_lock_irqsave(&d->lock, flags);
-
-	for (i = 0; i < ARRAY_SIZE(subgroup->enum_ids); i++) {
-		struct intc_subgroup_entry *entry;
-		int err;
-