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/*
* Renesas Solutions Highlander R7780RP-1 Support.
*
* Copyright (C) 2002 Atom Create Engineering Co., Ltd.
* Copyright (C) 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.
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/r7780rp.h>
#ifdef CONFIG_SH_R7780MP
static int mask_pos[] = {12, 11, 9, 14, 15, 8, 13, 6, 5, 4, 3, 2, 0, 0, 1, 0};
#else
static int mask_pos[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 5, 6, 4, 0, 1, 2, 0};
#endif
static void enable_r7780rp_irq(unsigned int irq)
{
/* Set priority in IPR back to original value */
ctrl_outw(ctrl_inw(IRLCNTR1) | (1 << mask_pos[irq]), IRLCNTR1);
}
static void disable_r7780rp_irq(unsigned int irq)
{
/* Set the priority in IPR to 0 */
ctrl_outw(ctrl_inw(IRLCNTR1) & (0xffff ^ (1 << mask_pos[irq])),
IRLCNTR1);
}
static struct irq_chip r7780rp_irq_chip __read_mostly = {
.name = "R7780RP",
.mask = disable_r7780rp_irq,
.unmask = enable_r7780rp_irq,
.mask_ack = disable_r7780rp_irq,
};
/*
* Initialize IRQ setting
*/
void __init init_r7780rp_IRQ(void)
{
int i;
for (i = 0; i < 15; i++) {
disable_irq_nosync(i);
set_irq_chip_and_handler_name(i, &r7780rp_irq_chip,
handle_level_irq, "level");
enable_r7780rp_irq(i);
}
}
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