[PATCH] mips: remove obsolete GIU driver for vr41xx

This patch has removed obsolete GIU driver for vr41xx.  This patch already
has been applied to mips tree.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 1 insertions, 456 deletions

diff --git a/arch/mips/vr41xx/common/Makefile b/arch/mips/vr41xx/common/Makefile
index 92c11e9bbb3..fa98ef3855b 100644
--- a/arch/mips/vr41xx/common/Makefile
+++ b/arch/mips/vr41xx/common/Makefile
@@ -2,7 +2,7 @@
 # Makefile for common code of the NEC VR4100 series.
 #
 
-obj-y				+= bcu.o cmu.o giu.o icu.o init.o int-handler.o pmu.o
+obj-y				+= bcu.o cmu.o icu.o init.o int-handler.o pmu.o
 obj-$(CONFIG_VRC4173)		+= vrc4173.o
 
 EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/vr41xx/common/giu.c b/arch/mips/vr41xx/common/giu.c
deleted file mode 100644
index 9c6b21a79e8..00000000000
--- a/arch/mips/vr41xx/common/giu.c
+++ /dev/null
@@ -1,455 +0,0 @@
-/*
- *  giu.c, General-purpose I/O Unit Interrupt routines for NEC VR4100 series.
- *
- *  Copyright (C) 2002 MontaVista Software Inc.
- *    Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com>
- *  Copyright (C) 2003-2004  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
- *  Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
- *
- *  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
- */
-/*
- * Changes:
- *  MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com>
- *  - New creation, NEC VR4111, VR4121, VR4122 and VR4131 are supported.
- *
- *  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
- *  - Added support for NEC VR4133.
- *  - Removed board_irq_init.
- */
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/types.h>
-
-#include <asm/cpu.h>
-#include <asm/io.h>
-#include <asm/vr41xx/vr41xx.h>
-
-#define GIUIOSELL_TYPE1	KSEG1ADDR(0x0b000100)
-#define GIUIOSELL_TYPE2	KSEG1ADDR(0x0f000140)
-
-#define GIUIOSELL	0x00
-#define GIUIOSELH	0x02
-#define GIUINTSTATL	0x08
-#define GIUINTSTATH	0x0a
-#define GIUINTENL	0x0c
-#define GIUINTENH	0x0e
-#define GIUINTTYPL	0x10
-#define GIUINTTYPH	0x12
-#define GIUINTALSELL	0x14
-#define GIUINTALSELH	0x16
-#define GIUINTHTSELL	0x18
-#define GIUINTHTSELH	0x1a
-#define GIUFEDGEINHL	0x20
-#define GIUFEDGEINHH	0x22
-#define GIUREDGEINHL	0x24
-#define GIUREDGEINHH	0x26
-
-static uint32_t giu_base;
-
-static struct irqaction giu_cascade = {
-	.handler	= no_action,
-	.mask		= CPU_MASK_NONE,
-	.name		= "cascade",
-};
-
-#define read_giuint(offset)		readw(giu_base + (offset))
-#define write_giuint(val, offset)	writew((val), giu_base + (offset))
-
-#define GIUINT_HIGH_OFFSET	16
-
-static inline uint16_t set_giuint(uint8_t offset, uint16_t set)
-{
-	uint16_t res;
-
-	res = read_giuint(offset);
-	res |= set;
-	write_giuint(res, offset);
-
-	return res;
-}
-
-static inline uint16_t clear_giuint(uint8_t offset, uint16_t clear)
-{
-	uint16_t res;
-
-	res = read_giuint(offset);
-	res &= ~clear;
-	write_giuint(res, offset);
-
-	return res;
-}
-
-static unsigned int startup_giuint_low_irq(unsigned int irq)
-{
-	unsigned int pin;
-
-	pin = GIU_IRQ_TO_PIN(irq);
-	write_giuint((uint16_t)1 << pin, GIUINTSTATL);
-	set_giuint(GIUINTENL, (uint16_t)1 << pin);
-
-	return 0;
-}
-
-static void shutdown_giuint_low_irq(unsigned int irq)
-{
-	clear_giuint(GIUINTENL, (uint16_t)1 << GIU_IRQ_TO_PIN(irq));
-}
-
-static void enable_giuint_low_irq(unsigned int irq)
-{
-	set_giuint(GIUINTENL, (uint16_t)1 << GIU_IRQ_TO_PIN(irq));
-}
-
-#define disable_giuint_low_irq	shutdown_giuint_low_irq
-
-static void ack_giuint_low_irq(unsigned int irq)
-{
-	unsigned int pin;
-
-	pin = GIU_IRQ_TO_PIN(irq);
-	clear_giuint(GIUINTENL, (uint16_t)1 << pin);
-	write_giuint((uint16_t)1 << pin, GIUINTSTATL);
-}
-
-static void end_giuint_low_irq(unsigned int irq)
-{
-	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-		set_giuint(GIUINTENL, (uint16_t)1 << GIU_IRQ_TO_PIN(irq));
-}
-
-static struct hw_interrupt_type giuint_low_irq_type = {
-	.typename	= "GIUINTL",
-	.startup	= startup_giuint_low_irq,
-	.shutdown	= shutdown_giuint_low_irq,
-	.enable		= enable_giuint_low_irq,
-	.disable	= disable_giuint_low_irq,
-	.ack		= ack_giuint_low_irq,
-	.end		= end_giuint_low_irq,
-};
-
-static unsigned int startup_giuint_high_irq(unsigned int irq)
-{
-	unsigned int pin;
-
-	pin = GIU_IRQ_TO_PIN(irq - GIUINT_HIGH_OFFSET);
-	write_giuint((uint16_t)1 << pin, GIUINTSTATH);
-	set_giuint(GIUINTENH, (uint16_t)1 << pin);
-
-	return 0;
-}
-
-static void shutdown_giuint_high_irq(unsigned int irq)
-{
-	clear_giuint(GIUINTENH, (uint16_t)1 << GIU_IRQ_TO_PIN(irq - GIUINT_HIGH_OFFSET));
-}
-
-static void enable_giuint_high_irq(unsigned int irq)
-{
-	set_giuint(GIUINTENH, (uint16_t)1 << GIU_IRQ_TO_PIN(irq - GIUINT_HIGH_OFFSET));
-}
-
-#define disable_giuint_high_irq	shutdown_giuint_high_irq
-
-static void ack_giuint_high_irq(unsigned int irq)
-{
-	unsigned int pin;
-
-	pin = GIU_IRQ_TO_PIN(irq - GIUINT_HIGH_OFFSET);
-	clear_giuint(GIUINTENH, (uint16_t)1 << pin);
-	write_giuint((uint16_t)1 << pin, GIUINTSTATH);
-}
-
-static void end_giuint_high_irq(unsigned int irq)
-{
-	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-		set_giuint(GIUINTENH, (uint16_t)1 << GIU_IRQ_TO_PIN(irq - GIUINT_HIGH_OFFSET));
-}
-
-static struct hw_interrupt_type giuint_high_irq_type = {
-	.typename	= "GIUINTH",
-	.startup	= startup_giuint_high_irq,
-	.shutdown	= shutdown_giuint_high_irq,
-	.enable		= enable_giuint_high_irq,
-	.disable	= disable_giuint_high_irq,
-	.ack		= ack_giuint_high_irq,
-	.end		= end_giuint_high_irq,
-};
-
-void __init init_vr41xx_giuint_irq(void)
-{
-	int i;
-
-	for (i = GIU_IRQ_BASE; i <= GIU_IRQ_LAST; i++) {
-		if (i < (GIU_IRQ_BASE + GIUINT_HIGH_OFFSET))
-			irq_desc[i].handler = &giuint_low_irq_type;
-		else
-			irq_desc[i].handler = &giuint_high_irq_type;
-	}
-
-	setup_irq(GIUINT_CASCADE_IRQ, &giu_cascade);
-}
-
-void vr41xx_set_irq_trigger(int pin, int trigger, int hold)
-{
-	uint16_t mask;
-
-	if (pin < GIUINT_HIGH_OFFSET) {
-		mask = (uint16_t)1 << pin;
-		if (trigger != TRIGGER_LEVEL) {
-        		set_giuint(GIUINTTYPL, mask);
-			if (hold == SIGNAL_HOLD)
-				set_giuint(GIUINTHTSELL, mask);
-			else
-				clear_giuint(GIUINTHTSELL, mask);
-			if (current_cpu_data.cputype == CPU_VR4133) {
-				switch (trigger) {
-				case TRIGGER_EDGE_FALLING:
-					set_giuint(GIUFEDGEINHL, mask);
-					clear_giuint(GIUREDGEINHL, mask);
-					break;
-				case TRIGGER_EDGE_RISING:
-					clear_giuint(GIUFEDGEINHL, mask);
-					set_giuint(GIUREDGEINHL, mask);
-					break;
-				default:
-					set_giuint(GIUFEDGEINHL, mask);
-					set_giuint(GIUREDGEINHL, mask);
-					break;
-				}
-			}
-		} else {
-			clear_giuint(GIUINTTYPL, mask);
-			clear_giuint(GIUINTHTSELL, mask);
-		}
-		write_giuint(mask, GIUINTSTATL);
-	} else {
-		mask = (uint16_t)1 << (pin - GIUINT_HIGH_OFFSET);
-		if (trigger != TRIGGER_LEVEL) {
-			set_giuint(GIUINTTYPH, mask);
-			if (hold == SIGNAL_HOLD)
-				set_giuint(GIUINTHTSELH, mask);
-			else
-				clear_giuint(GIUINTHTSELH, mask);
-			if (current_cpu_data.cputype == CPU_VR4133) {
-				switch (trigger) {
-				case TRIGGER_EDGE_FALLING:
-					set_giuint(GIUFEDGEINHH, mask);
-					clear_giuint(GIUREDGEINHH, mask);
-					break;
-				case TRIGGER_EDGE_RISING:
-					clear_giuint(GIUFEDGEINHH, mask);
-					set_giuint(GIUREDGEINHH, mask);
-					break;
-				default:
-					set_giuint(GIUFEDGEINHH, mask);
-					set_giuint(GIUREDGEINHH, mask);
-					break;
-				}
-			}
-		} else {
-			clear_giuint(GIUINTTYPH, mask);
-			clear_giuint(GIUINTHTSELH, mask);
-		}
-		write_giuint(mask, GIUINTSTATH);
-	}
-}
-
-EXPORT_SYMBOL(vr41xx_set_irq_trigger);
-
-void vr41xx_set_irq_level(int pin, int level)
-{
-	uint16_t mask;
-
-	if (pin < GIUINT_HIGH_OFFSET) {
-		mask = (uint16_t)1 << pin;
-		if (level == LEVEL_HIGH)
-			set_giuint(GIUINTALSELL, mask);
-		else
-			clear_giuint(GIUINTALSELL, mask);
-		write_giuint(mask, GIUINTSTATL);
-	} else {
-		mask = (uint16_t)1 << (pin - GIUINT_HIGH_OFFSET);
-		if (level == LEVEL_HIGH)
-			set_giuint(GIUINTALSELH, mask);
-		else
-			clear_giuint(GIUINTALSELH, mask);
-		write_giuint(mask, GIUINTSTATH);
-	}
-}
-
-EXPORT_SYMBOL(vr41xx_set_irq_level);
-
-#define GIUINT_NR_IRQS		32
-
-enum {
-	GIUINT_NO_CASCADE,
-	GIUINT_CASCADE
-};
-
-struct vr41xx_giuint_cascade {
-	unsigned int flag;
-	int (*get_irq_number)(int irq);
-};
-
-static struct vr41xx_giuint_cascade giuint_cascade[GIUINT_NR_IRQS];
-
-static int no_irq_number(int irq)
-{
-	return -EINVAL;
-}
-
-int vr41xx_cascade_irq(unsigned int irq, int (*get_irq_number)(int irq))
-{
-	unsigned int pin;
-	int retval;
-
-	if (irq < GIU_IRQ(0) || irq > GIU_IRQ(31))
-		return -EINVAL;
-
-	if(!get_irq_number)
-		return -EINVAL;
-
-	pin = GIU_IRQ_TO_PIN(irq);
-	giuint_cascade[pin].flag = GIUINT_CASCADE;
-	giuint_cascade[pin].get_irq_number = get_irq_number;
-
-	retval = setup_irq(irq, &giu_cascade);
-	if (retval != 0) {
-		giuint_cascade[pin].flag = GIUINT_NO_CASCADE;
-		giuint_cascade[pin].get_irq_number = no_irq_number;
-	}
-
-	return retval;
-}
-
-EXPORT_SYMBOL(vr41xx_cascade_irq);
-
-static inline int get_irq_pin_number(void)
-{
-	uint16_t pendl, pendh, maskl, maskh;
-	int i;
-
-	pendl = read_giuint(GIUINTSTATL);
-	pendh = read_giuint(GIUINTSTATH);
-	maskl = read_giuint(GIUINTENL);
-	maskh = read_giuint(GIUINTENH);
-
-	maskl &= pendl;
-	maskh &= pendh;
-
-	if (maskl) {
-		for (i = 0; i < 16; i++) {
-			if (maskl & ((uint16_t)1 << i))
-				return i;
-		}
-	} else if (maskh) {
-		for (i = 0; i < 16; i++) {
-			if (maskh & ((uint16_t)1 << i))
-				return i + GIUINT_HIGH_OFFSET;
-		}
-	}
-
-	printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n",
-	       maskl, pendl, maskh, pendh);
-
-	atomic_inc(&irq_err_count);
-
-	return -1;
-}
-
-static inline void ack_giuint_irq(int pin)
-{
-	if (pin < GIUINT_HIGH_OFFSET) {
-		clear_giuint(GIUINTENL, (uint16_t)1 << pin);
-		write_giuint((uint16_t)1 << pin, GIUINTSTATL);
-	} else {
-		pin -= GIUINT_HIGH_OFFSET;
-		clear_giuint(GIUINTENH, (uint16_t)1 << pin);
-		write_giuint((uint16_t)1 << pin, GIUINTSTATH);
-	}
-}
-
-static inline void end_giuint_irq(int pin)
-{
-	if (pin < GIUINT_HIGH_OFFSET)
-		set_giuint(GIUINTENL, (uint16_t)1 << pin);
-	else
-		set_giuint(GIUINTENH, (uint16_t)1 << (pin - GIUINT_HIGH_OFFSET));
-}
-
-void giuint_irq_dispatch(struct pt_regs *regs)
-{
-	struct vr41xx_giuint_cascade *cascade;
-	unsigned int giuint_irq;
-	int pin;
-
-	pin = get_irq_pin_number();
-	if (pin < 0)
-		return;
-
-	disable_irq(GIUINT_CASCADE_IRQ);
-
-	cascade = &giuint_cascade[pin];
-	giuint_irq = GIU_IRQ(pin);
-	if (cascade->flag == GIUINT_CASCADE) {
-		int irq = cascade->get_irq_number(giuint_irq);
-		ack_giuint_irq(pin);
-		if (irq >= 0)
-			do_IRQ(irq, regs);
-		end_giuint_irq(pin);
-	} else {
-		do_IRQ(giuint_irq, regs);
-	}
-
-	enable_irq(GIUINT_CASCADE_IRQ);
-}
-
-static int __init vr41xx_giu_init(void)
-{
-	int i;
-
-	switch (current_cpu_data.cputype) {
-	case CPU_VR4111:
-	case CPU_VR4121:
-		giu_base = GIUIOSELL_TYPE1;
-		break;
-	case CPU_VR4122:
-	case CPU_VR4131:
-	case CPU_VR4133:
-		giu_base = GIUIOSELL_TYPE2;
-		break;
-	default:
-		printk(KERN_ERR "GIU: Unexpected CPU of NEC VR4100 series\n");
-		return -EINVAL;
-	}
-
-	for (i = 0; i < GIUINT_NR_IRQS; i++) {
-		if (i < GIUINT_HIGH_OFFSET)
-			clear_giuint(GIUINTENL, (uint16_t)1 << i);
-		else
-			clear_giuint(GIUINTENH, (uint16_t)1 << (i - GIUINT_HIGH_OFFSET));
-		giuint_cascade[i].flag = GIUINT_NO_CASCADE;
-		giuint_cascade[i].get_irq_number = no_irq_number;
-	}
-
-	return 0;
-}
-
-early_initcall(vr41xx_giu_init);