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yaml
---
r: 216869
b: refs/heads/master
c: eb6a2c7
h: refs/heads/master
i:
  216867: a1ec8d3
v: v3
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Santosh Shilimkar authored and Kevin Hilman committed Sep 24, 2010
1 parent f5ce851 commit 6b97819
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Showing 4 changed files with 56 additions and 51 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 315e2556f62adb51c40d5422f4134bd3630d8157
refs/heads/master: eb6a2c7550560e6619eadb912ea8384ce27964b8
50 changes: 50 additions & 0 deletions trunk/arch/arm/mach-omap2/pm.c
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,9 @@
#include <plat/omap_device.h>
#include <plat/common.h>

#include <plat/powerdomain.h>
#include <plat/clockdomain.h>

static struct omap_device_pm_latency *pm_lats;

static struct device *mpu_dev;
Expand Down Expand Up @@ -83,6 +86,53 @@ static void omap2_init_processor_devices(void)
_init_omap_device("l3_main", &l3_dev);
}

/*
* This sets pwrdm state (other than mpu & core. Currently only ON &
* RET are supported. Function is assuming that clkdm doesn't have
* hw_sup mode enabled.
*/
int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
{
u32 cur_state;
int sleep_switch = 0;
int ret = 0;

if (pwrdm == NULL || IS_ERR(pwrdm))
return -EINVAL;

while (!(pwrdm->pwrsts & (1 << state))) {
if (state == PWRDM_POWER_OFF)
return ret;
state--;
}

cur_state = pwrdm_read_next_pwrst(pwrdm);
if (cur_state == state)
return ret;

if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
sleep_switch = 1;
pwrdm_wait_transition(pwrdm);
}

ret = pwrdm_set_next_pwrst(pwrdm, state);
if (ret) {
printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
pwrdm->name);
goto err;
}

if (sleep_switch) {
omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
pwrdm_wait_transition(pwrdm);
pwrdm_state_switch(pwrdm);
}

err:
return ret;
}

static int __init omap2_common_pm_init(void)
{
omap2_init_processor_devices();
Expand Down
2 changes: 1 addition & 1 deletion trunk/arch/arm/mach-omap2/pm.h
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ extern void *omap3_secure_ram_storage;
extern void omap3_pm_off_mode_enable(int);
extern void omap_sram_idle(void);
extern int omap3_can_sleep(void);
extern int set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
extern int omap3_idle_init(void);

struct cpuidle_params {
Expand Down
53 changes: 4 additions & 49 deletions trunk/arch/arm/mach-omap2/pm34xx.c
Original file line number Diff line number Diff line change
Expand Up @@ -483,51 +483,6 @@ int omap3_can_sleep(void)
return 1;
}

/* This sets pwrdm state (other than mpu & core. Currently only ON &
* RET are supported. Function is assuming that clkdm doesn't have
* hw_sup mode enabled. */
int set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
{
u32 cur_state;
int sleep_switch = 0;
int ret = 0;

if (pwrdm == NULL || IS_ERR(pwrdm))
return -EINVAL;

while (!(pwrdm->pwrsts & (1 << state))) {
if (state == PWRDM_POWER_OFF)
return ret;
state--;
}

cur_state = pwrdm_read_next_pwrst(pwrdm);
if (cur_state == state)
return ret;

if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
sleep_switch = 1;
pwrdm_wait_transition(pwrdm);
}

ret = pwrdm_set_next_pwrst(pwrdm, state);
if (ret) {
printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
pwrdm->name);
goto err;
}

if (sleep_switch) {
omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
pwrdm_wait_transition(pwrdm);
pwrdm_state_switch(pwrdm);
}

err:
return ret;
}

static void omap3_pm_idle(void)
{
local_irq_disable();
Expand Down Expand Up @@ -569,7 +524,7 @@ static int omap3_pm_suspend(void)
pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm);
/* Set ones wanted by suspend */
list_for_each_entry(pwrst, &pwrst_list, node) {
if (set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))
if (omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))
goto restore;
if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm))
goto restore;
Expand All @@ -590,7 +545,7 @@ static int omap3_pm_suspend(void)
pwrst->pwrdm->name, pwrst->next_state);
ret = -1;
}
set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
omap_set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
}
if (ret)
printk(KERN_ERR "Could not enter target state in pm_suspend\n");
Expand Down Expand Up @@ -939,7 +894,7 @@ void omap3_pm_off_mode_enable(int enable)

list_for_each_entry(pwrst, &pwrst_list, node) {
pwrst->next_state = state;
set_pwrdm_state(pwrst->pwrdm, state);
omap_set_pwrdm_state(pwrst->pwrdm, state);
}
}

Expand Down Expand Up @@ -984,7 +939,7 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
if (pwrdm_has_hdwr_sar(pwrdm))
pwrdm_enable_hdwr_sar(pwrdm);

return set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
return omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
}

/*
Expand Down

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