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ARM: OMAP1: PM fixes for OMAP1 

This patch does the following:

- Fixes the omap_pm_idle() code so that we enter WFI mode in idle.
- /sys/power/sleep_while_idle is created only when 32k timer is used

Signed-off-by: Vivek Kutal <vivek.kutal@celunite.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Vivek Kutal 2007-12-11 21:46:31 +05:30 committed by Tony Lindgren
parent 087c50302f
commit 010bb0cf42
1 changed files with 12 additions and 5 deletions
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17
arch/arm/mach-omap1/pm.c
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@ -67,6 +67,8 @@ static unsigned int mpui730_sleep_save[MPUI730_SLEEP_SAVE_SIZE];
static unsigned int mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_SIZE];
static unsigned int mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_SIZE];
#ifdef CONFIG_OMAP_32K_TIMER
static unsigned short enable_dyn_sleep = 1;
static ssize_t idle_show(struct kobject *kobj, struct kobj_attribute *attr,
@ -91,6 +93,8 @@ static ssize_t idle_store(struct kobject *kobj, struct kobj_attribute *attr,
static struct kobj_attribute sleep_while_idle_attr =
__ATTR(sleep_while_idle, 0644, idle_show, idle_store);
#endif
static void (*omap_sram_idle)(void) = NULL;
static void (*omap_sram_suspend)(unsigned long r0, unsigned long r1) = NULL;
@ -104,9 +108,7 @@ void omap_pm_idle(void)
{
extern __u32 arm_idlect1_mask;
__u32 use_idlect1 = arm_idlect1_mask;
#ifndef CONFIG_OMAP_MPU_TIMER
int do_sleep;
#endif
int do_sleep = 0;
local_irq_disable();
local_fiq_disable();
@ -128,7 +130,6 @@ void omap_pm_idle(void)
use_idlect1 = use_idlect1 & ~(1 << 9);
#else
do_sleep = 0;
while (enable_dyn_sleep) {
#ifdef CONFIG_CBUS_TAHVO_USB
@ -141,6 +142,8 @@ void omap_pm_idle(void)
break;
}
#endif
#ifdef CONFIG_OMAP_DM_TIMER
use_idlect1 = omap_dm_timer_modify_idlect_mask(use_idlect1);
#endif
@ -168,7 +171,6 @@ void omap_pm_idle(void)
}
omap_sram_suspend(omap_readl(ARM_IDLECT1),
omap_readl(ARM_IDLECT2));
#endif
local_fiq_enable();
local_irq_enable();
@ -661,7 +663,10 @@ static struct platform_suspend_ops omap_pm_ops ={
static int __init omap_pm_init(void)
{
#ifdef CONFIG_OMAP_32K_TIMER
int error;
#endif
printk("Power Management for TI OMAP.\n");
@ -719,9 +724,11 @@ static int __init omap_pm_init(void)
omap_pm_init_proc();
#endif
#ifdef CONFIG_OMAP_32K_TIMER
error = sysfs_create_file(power_kobj, &sleep_while_idle_attr);
if (error)
printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
#endif
if (cpu_is_omap16xx()) {
/* configure LOW_PWR pin */