Archived
14
0
Fork 0
This repository has been archived on 2022-02-17. You can view files and clone it, but cannot push or open issues or pull requests.
linux-2.6/arch/sh/kernel/cpu/sh4a/intc-shx3.c
Paul Mundt e15f6870a2 sh: Support userimask for all SH-X3 interrupt controllers.
This shuffles some of the shared bits out of the 7786 code and in to a
shared SH-X3 support file. Presently just for userimask, but also a good
place for the IRQ balancing wrappers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-02 00:43:43 +09:00

35 lines
780 B
C

/*
* Shared support for SH-X3 interrupt controllers.
*
* Copyright (C) 2009 - 2010 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.
*/
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/init.h>
#define INTACK 0xfe4100b8
#define INTACKCLR 0xfe4100bc
#define INTC_USERIMASK 0xfe411000
#ifdef CONFIG_INTC_BALANCING
unsigned int irq_lookup(unsigned int irq)
{
return __raw_readl(INTACK) & 1 ? irq : NO_IRQ_IGNORE;
}
void irq_finish(unsigned int irq)
{
__raw_writel(irq2evt(irq), INTACKCLR);
}
#endif
static int __init shx3_irq_setup(void)
{
return register_intc_userimask(INTC_USERIMASK);
}
arch_initcall(shx3_irq_setup);