a21765a70e
The following patch and script moves the arch/arm/mach-s3c2410
directory into arch/arm/plat-s3c24xx for the generic core code
and inti arch/arm/mach-s3c{cpu} for the cpu/machine support files
Include directory include/asm-arm/plat-s3c24xx is added for the
core include files.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
133 lines
3.4 KiB
C
133 lines
3.4 KiB
C
/* linux/arch/arm/mach-s3c2412/irq.c
|
|
*
|
|
* Copyright (c) 2006 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 <asm/plat-s3c24xx/cpu.h>
|
|
#include <asm/plat-s3c24xx/irq.h>
|
|
#include <asm/plat-s3c24xx/pm.h>
|
|
|
|
/* the s3c2412 changes the behaviour of IRQ_EINT0 through IRQ_EINT3 by
|
|
* having them turn up in both the INT* and the EINT* registers. Whilst
|
|
* both show the status, they both now need to be acked when the IRQs
|
|
* go off.
|
|
*/
|
|
|
|
static void
|
|
s3c2412_irq_mask(unsigned int irqno)
|
|
{
|
|
unsigned long bitval = 1UL << (irqno - IRQ_EINT0);
|
|
unsigned long mask;
|
|
|
|
mask = __raw_readl(S3C2410_INTMSK);
|
|
__raw_writel(mask | bitval, S3C2410_INTMSK);
|
|
|
|
mask = __raw_readl(S3C2412_EINTMASK);
|
|
__raw_writel(mask | bitval, S3C2412_EINTMASK);
|
|
}
|
|
|
|
static inline void
|
|
s3c2412_irq_ack(unsigned int irqno)
|
|
{
|
|
unsigned long bitval = 1UL << (irqno - IRQ_EINT0);
|
|
|
|
__raw_writel(bitval, S3C2412_EINTPEND);
|
|
__raw_writel(bitval, S3C2410_SRCPND);
|
|
__raw_writel(bitval, S3C2410_INTPND);
|
|
}
|
|
|
|
static inline void
|
|
s3c2412_irq_maskack(unsigned int irqno)
|
|
{
|
|
unsigned long bitval = 1UL << (irqno - IRQ_EINT0);
|
|
unsigned long mask;
|
|
|
|
mask = __raw_readl(S3C2410_INTMSK);
|
|
__raw_writel(mask|bitval, S3C2410_INTMSK);
|
|
|
|
mask = __raw_readl(S3C2412_EINTMASK);
|
|
__raw_writel(mask | bitval, S3C2412_EINTMASK);
|
|
|
|
__raw_writel(bitval, S3C2412_EINTPEND);
|
|
__raw_writel(bitval, S3C2410_SRCPND);
|
|
__raw_writel(bitval, S3C2410_INTPND);
|
|
}
|
|
|
|
static void
|
|
s3c2412_irq_unmask(unsigned int irqno)
|
|
{
|
|
unsigned long bitval = 1UL << (irqno - IRQ_EINT0);
|
|
unsigned long mask;
|
|
|
|
mask = __raw_readl(S3C2412_EINTMASK);
|
|
__raw_writel(mask & ~bitval, S3C2412_EINTMASK);
|
|
|
|
mask = __raw_readl(S3C2410_INTMSK);
|
|
__raw_writel(mask & ~bitval, S3C2410_INTMSK);
|
|
}
|
|
|
|
static struct irq_chip s3c2412_irq_eint0t4 = {
|
|
.ack = s3c2412_irq_ack,
|
|
.mask = s3c2412_irq_mask,
|
|
.unmask = s3c2412_irq_unmask,
|
|
.set_wake = s3c_irq_wake,
|
|
.set_type = s3c_irqext_type,
|
|
};
|
|
|
|
static int s3c2412_irq_add(struct sys_device *sysdev)
|
|
{
|
|
unsigned int irqno;
|
|
|
|
for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) {
|
|
set_irq_chip(irqno, &s3c2412_irq_eint0t4);
|
|
set_irq_handler(irqno, handle_edge_irq);
|
|
set_irq_flags(irqno, IRQF_VALID);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct sysdev_driver s3c2412_irq_driver = {
|
|
.add = s3c2412_irq_add,
|
|
.suspend = s3c24xx_irq_suspend,
|
|
.resume = s3c24xx_irq_resume,
|
|
};
|
|
|
|
static int s3c2412_irq_init(void)
|
|
{
|
|
return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_irq_driver);
|
|
}
|
|
|
|
arch_initcall(s3c2412_irq_init);
|