forked from Minki/linux
3f30a09a61
Conflicts: arch/arm/mach-pxa/Kconfig arch/arm/mach-pxa/corgi.c arch/arm/mach-pxa/include/mach/hardware.h arch/arm/mach-pxa/spitz.c
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/* linux/arch/arm/plat-s3c24xx/s3c244x-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/sysdev.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include <asm/mach/irq.h>
|
|
|
|
#include <mach/regs-irq.h>
|
|
#include <mach/regs-gpio.h>
|
|
|
|
#include <asm/plat-s3c24xx/cpu.h>
|
|
#include <asm/plat-s3c24xx/pm.h>
|
|
#include <asm/plat-s3c24xx/irq.h>
|
|
|
|
/* camera irq */
|
|
|
|
static void s3c_irq_demux_cam(unsigned int irq,
|
|
struct irq_desc *desc)
|
|
{
|
|
unsigned int subsrc, submsk;
|
|
|
|
/* 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 >>= 11;
|
|
subsrc &= 3;
|
|
|
|
if (subsrc != 0) {
|
|
if (subsrc & 1) {
|
|
generic_handle_irq(IRQ_S3C2440_CAM_C);
|
|
}
|
|
if (subsrc & 2) {
|
|
generic_handle_irq(IRQ_S3C2440_CAM_P);
|
|
}
|
|
}
|
|
}
|
|
|
|
#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
|
|
|
|
static void
|
|
s3c_irq_cam_mask(unsigned int irqno)
|
|
{
|
|
s3c_irqsub_mask(irqno, INTMSK_CAM, 3<<11);
|
|
}
|
|
|
|
static void
|
|
s3c_irq_cam_unmask(unsigned int irqno)
|
|
{
|
|
s3c_irqsub_unmask(irqno, INTMSK_CAM);
|
|
}
|
|
|
|
static void
|
|
s3c_irq_cam_ack(unsigned int irqno)
|
|
{
|
|
s3c_irqsub_maskack(irqno, INTMSK_CAM, 3<<11);
|
|
}
|
|
|
|
static struct irq_chip s3c_irq_cam = {
|
|
.mask = s3c_irq_cam_mask,
|
|
.unmask = s3c_irq_cam_unmask,
|
|
.ack = s3c_irq_cam_ack,
|
|
};
|
|
|
|
static int s3c244x_irq_add(struct sys_device *sysdev)
|
|
{
|
|
unsigned int irqno;
|
|
|
|
set_irq_chip(IRQ_NFCON, &s3c_irq_level_chip);
|
|
set_irq_handler(IRQ_NFCON, handle_level_irq);
|
|
set_irq_flags(IRQ_NFCON, IRQF_VALID);
|
|
|
|
/* add chained handler for camera */
|
|
|
|
set_irq_chip(IRQ_CAM, &s3c_irq_level_chip);
|
|
set_irq_handler(IRQ_CAM, handle_level_irq);
|
|
set_irq_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
|
|
|
|
for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
|
|
set_irq_chip(irqno, &s3c_irq_cam);
|
|
set_irq_handler(irqno, handle_level_irq);
|
|
set_irq_flags(irqno, IRQF_VALID);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct sysdev_driver s3c2440_irq_driver = {
|
|
.add = s3c244x_irq_add,
|
|
.suspend = s3c24xx_irq_suspend,
|
|
.resume = s3c24xx_irq_resume,
|
|
};
|
|
|
|
static int s3c2440_irq_init(void)
|
|
{
|
|
return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
|
|
}
|
|
|
|
arch_initcall(s3c2440_irq_init);
|
|
|
|
static struct sysdev_driver s3c2442_irq_driver = {
|
|
.add = s3c244x_irq_add,
|
|
.suspend = s3c24xx_irq_suspend,
|
|
.resume = s3c24xx_irq_resume,
|
|
};
|
|
|
|
|
|
static int s3c2442_irq_init(void)
|
|
{
|
|
return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_irq_driver);
|
|
}
|
|
|
|
arch_initcall(s3c2442_irq_init);
|