0cd61b68c3
Untested, but this should fix up the bulk of the totally mechanical issues, and should make the actual detail fixing easier. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
/* linux/arch/arm/mach-s3c2410/s3c2440-irq.c
|
|
*
|
|
* Copyright (c) 2003,2004 Simtec Electronics
|
|
* Ben Dooks <ben@simtec.co.uk>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/sysdev.h>
|
|
|
|
#include <asm/hardware.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <asm/mach/irq.h>
|
|
|
|
#include <asm/arch/regs-irq.h>
|
|
#include <asm/arch/regs-gpio.h>
|
|
|
|
#include "cpu.h"
|
|
#include "pm.h"
|
|
#include "irq.h"
|
|
|
|
/* WDT/AC97 */
|
|
|
|
static void s3c_irq_demux_wdtac97(unsigned int irq,
|
|
struct irqdesc *desc)
|
|
{
|
|
unsigned int subsrc, submsk;
|
|
struct irqdesc *mydesc;
|
|
|
|
/* read the current pending interrupts, and the mask
|
|
* for what it is available */
|
|
|
|
subsrc = __raw_readl(S3C2410_SUBSRCPND);
|
|
submsk = __raw_readl(S3C2410_INTSUBMSK);
|
|
|
|
subsrc &= ~submsk;
|
|
subsrc >>= 13;
|
|
subsrc &= 3;
|
|
|
|
if (subsrc != 0) {
|
|
if (subsrc & 1) {
|
|
mydesc = irq_desc + IRQ_S3C2440_WDT;
|
|
desc_handle_irq(IRQ_S3C2440_WDT, mydesc);
|
|
}
|
|
if (subsrc & 2) {
|
|
mydesc = irq_desc + IRQ_S3C2440_AC97;
|
|
desc_handle_irq(IRQ_S3C2440_AC97, mydesc);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#define INTMSK_WDT (1UL << (IRQ_WDT - IRQ_EINT0))
|
|
|
|
static void
|
|
s3c_irq_wdtac97_mask(unsigned int irqno)
|
|
{
|
|
s3c_irqsub_mask(irqno, INTMSK_WDT, 3<<13);
|
|
}
|
|
|
|
static void
|
|
s3c_irq_wdtac97_unmask(unsigned int irqno)
|
|
{
|
|
s3c_irqsub_unmask(irqno, INTMSK_WDT);
|
|
}
|
|
|
|
static void
|
|
s3c_irq_wdtac97_ack(unsigned int irqno)
|
|
{
|
|
s3c_irqsub_maskack(irqno, INTMSK_WDT, 3<<13);
|
|
}
|
|
|
|
static struct irqchip s3c_irq_wdtac97 = {
|
|
.mask = s3c_irq_wdtac97_mask,
|
|
.unmask = s3c_irq_wdtac97_unmask,
|
|
.ack = s3c_irq_wdtac97_ack,
|
|
};
|
|
|
|
static int s3c2440_irq_add(struct sys_device *sysdev)
|
|
{
|
|
unsigned int irqno;
|
|
|
|
printk("S3C2440: IRQ Support\n");
|
|
|
|
/* add new chained handler for wdt, ac7 */
|
|
|
|
set_irq_chip(IRQ_WDT, &s3c_irq_level_chip);
|
|
set_irq_handler(IRQ_WDT, do_level_IRQ);
|
|
set_irq_chained_handler(IRQ_WDT, s3c_irq_demux_wdtac97);
|
|
|
|
for (irqno = IRQ_S3C2440_WDT; irqno <= IRQ_S3C2440_AC97; irqno++) {
|
|
set_irq_chip(irqno, &s3c_irq_wdtac97);
|
|
set_irq_handler(irqno, do_level_IRQ);
|
|
set_irq_flags(irqno, IRQF_VALID);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct sysdev_driver s3c2440_irq_driver = {
|
|
.add = s3c2440_irq_add,
|
|
};
|
|
|
|
static int s3c2440_irq_init(void)
|
|
{
|
|
return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
|
|
}
|
|
|
|
arch_initcall(s3c2440_irq_init);
|
|
|