sh: remove maskreg irq code

This patch removes the maskreg irq code since it is not in use anymore.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig.cpu

@@ -87,9 +87,6 @@ config SH64_ID2815_WORKAROUND
 config CPU_HAS_INTEVT
 	bool
 
-config CPU_HAS_MASKREG_IRQ
-	bool
-
 config CPU_HAS_IPR_IRQ
 	bool
 

arch/sh/kernel/cpu/irq/Makefile

@@ -6,4 +6,3 @@ obj-y	+= intc.o
 obj-$(CONFIG_SUPERH32)			+= imask.o
 obj-$(CONFIG_CPU_SH5)			+= intc-sh5.o
 obj-$(CONFIG_CPU_HAS_IPR_IRQ)		+= ipr.o
-obj-$(CONFIG_CPU_HAS_MASKREG_IRQ)	+= maskreg.o

arch/sh/kernel/cpu/irq/maskreg.c

-/*
- * Interrupt handling for Simple external interrupt mask register
- *
- * Copyright (C) 2001 A&D Co., Ltd. <http://www.aandd.co.jp>
- *
- * This is for the machine which have single 16 bit register
- * for masking external IRQ individually.
- * Each bit of the register is for masking each interrupt.
- *
- * This file may be copied or modified under the terms of the GNU
- * General Public License.  See linux/COPYING for more information.
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <asm/system.h>
-#include <asm/io.h>
-
-/* address of external interrupt mask register */
-unsigned long irq_mask_register;
-
-/* forward declaration */
-static unsigned int startup_maskreg_irq(unsigned int irq);
-static void shutdown_maskreg_irq(unsigned int irq);
-static void enable_maskreg_irq(unsigned int irq);
-static void disable_maskreg_irq(unsigned int irq);
-static void mask_and_ack_maskreg(unsigned int);
-static void end_maskreg_irq(unsigned int irq);
-
-/* hw_interrupt_type */
-static struct hw_interrupt_type maskreg_irq_type = {
-	.typename = "Mask Register",
-	.startup = startup_maskreg_irq,
-	.shutdown = shutdown_maskreg_irq,
-	.enable = enable_maskreg_irq,
-	.disable = disable_maskreg_irq,
-	.ack = mask_and_ack_maskreg,
-	.end = end_maskreg_irq
-};
-
-/* actual implementation */
-static unsigned int startup_maskreg_irq(unsigned int irq)
-{
-	enable_maskreg_irq(irq);
-	return 0; /* never anything pending */
-}
-
-static void shutdown_maskreg_irq(unsigned int irq)
-{
-	disable_maskreg_irq(irq);
-}
-
-static void disable_maskreg_irq(unsigned int irq)
-{
-	unsigned short val, mask = 0x01 << irq;
-
-	BUG_ON(!irq_mask_register);
-
-	/* Set "irq"th bit */
-	val = ctrl_inw(irq_mask_register);
-	val |= mask;
-	ctrl_outw(val, irq_mask_register);
-}
-
-static void enable_maskreg_irq(unsigned int irq)
-{
-	unsigned short val, mask = ~(0x01 << irq);
-
-	BUG_ON(!irq_mask_register);
-
-	/* Clear "irq"th bit */
-	val = ctrl_inw(irq_mask_register);
-	val &= mask;
-	ctrl_outw(val, irq_mask_register);
-}
-
-static void mask_and_ack_maskreg(unsigned int irq)
-{
-	disable_maskreg_irq(irq);
-}
-
-static void end_maskreg_irq(unsigned int irq)
-{
-	if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-		enable_maskreg_irq(irq);
-}
-
-void make_maskreg_irq(unsigned int irq)
-{
-	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &maskreg_irq_type;
-	disable_maskreg_irq(irq);
-}