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Diffstat (limited to 'arch/sh/kernel/cpu/irq/maskreg.c')
-rw-r--r--arch/sh/kernel/cpu/irq/maskreg.c93
1 files changed, 0 insertions, 93 deletions
diff --git a/arch/sh/kernel/cpu/irq/maskreg.c b/arch/sh/kernel/cpu/irq/maskreg.c
deleted file mode 100644
index 978992e367a5..000000000000
--- a/arch/sh/kernel/cpu/irq/maskreg.c
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * 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);
-}