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ARM: s3c24xx: move special idle code to out of line 

... and hook it to arm_pm_idle.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
This commit is contained in:
Nicolas Pitre 2011-08-03 11:34:59 -04:00 committed by Nicolas Pitre
parent 50edbf78f5
commit 92311272c1
4 changed files with 29 additions and 45 deletions
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40
arch/arm/mach-s3c2410/include/mach/system.h
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@ -10,45 +10,7 @@
* published by the Free Software Foundation.
*/
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <mach/idle.h>
#include <mach/regs-clock.h>
void (*s3c24xx_idle)(void);
void s3c24xx_default_idle(void)
{
unsigned long tmp;
int i;
/* idle the system by using the idle mode which will wait for an
* interrupt to happen before restarting the system.
*/
/* Warning: going into idle state upsets jtag scanning */
__raw_writel(__raw_readl(S3C2410_CLKCON) | S3C2410_CLKCON_IDLE,
S3C2410_CLKCON);
/* the samsung port seems to do a loop and then unset idle.. */
for (i = 0; i < 50; i++) {
tmp += __raw_readl(S3C2410_CLKCON); /* ensure loop not optimised out */
}
/* this bit is not cleared on re-start... */
__raw_writel(__raw_readl(S3C2410_CLKCON) & ~S3C2410_CLKCON_IDLE,
S3C2410_CLKCON);
}
static void arch_idle(void)
{
if (s3c24xx_idle != NULL)
(s3c24xx_idle)();
else
s3c24xx_default_idle();
cpu_do_idle();
}

4
arch/arm/mach-s3c2412/s3c2412.c
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@ -32,8 +32,6 @@
#include <asm/proc-fns.h>
#include <asm/irq.h>
#include <mach/idle.h>
#include <plat/cpu-freq.h>
#include <mach/regs-clock.h>
@ -164,7 +162,7 @@ void __init s3c2412_map_io(void)
/* set our idle function */
s3c24xx_idle = s3c2412_idle;
arm_pm_idle = s3c2412_idle;
/* register our io-tables */

3
arch/arm/mach-s3c2416/s3c2416.c
View File

@ -44,7 +44,6 @@
#include <asm/proc-fns.h>
#include <asm/irq.h>
#include <mach/idle.h>
#include <mach/regs-s3c2443-clock.h>
#include <plat/gpio-core.h>
@ -88,8 +87,6 @@ int __init s3c2416_init(void)
{
printk(KERN_INFO "S3C2416: Initializing architecture\n");
/* s3c24xx_idle = s3c2416_idle; */
/* change WDT IRQ number */
s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
s3c_device_wdt.resource[1].end = IRQ_S3C2443_WDT;

27
arch/arm/plat-s3c24xx/cpu.c
View File

@ -32,6 +32,7 @@
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/regs-clock.h>
#include <asm/irq.h>
#include <asm/cacheflush.h>
@ -190,8 +191,34 @@ static unsigned long s3c24xx_read_idcode_v4(void)
return __raw_readl(S3C2410_GSTATUS1);
}
static void s3c24xx_default_idle(void)
{
unsigned long tmp;
int i;
/* idle the system by using the idle mode which will wait for an
* interrupt to happen before restarting the system.
*/
/* Warning: going into idle state upsets jtag scanning */
__raw_writel(__raw_readl(S3C2410_CLKCON) | S3C2410_CLKCON_IDLE,
S3C2410_CLKCON);
/* the samsung port seems to do a loop and then unset idle.. */
for (i = 0; i < 50; i++)
tmp += __raw_readl(S3C2410_CLKCON); /* ensure loop not optimised out */
/* this bit is not cleared on re-start... */
__raw_writel(__raw_readl(S3C2410_CLKCON) & ~S3C2410_CLKCON_IDLE,
S3C2410_CLKCON);
}
void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
{
arm_pm_idle = s3c24xx_default_idle;
/* initialise the io descriptors we need for initialisation */
iotable_init(mach_desc, size);
iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));