57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
|
|
* 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/interrupt.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);
|
|
}
|
|
}
|