/*
* This sets pwrdm state (other than mpu & core. Currently only ON &
* RET are supported.
*/
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) {
if ((pwrdm_read_pwrst(pwrdm) > state) &&
(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) {
sleep_switch = LOWPOWERSTATE_SWITCH;
} else {
clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
pwrdm_wait_transition(pwrdm);
sleep_switch = FORCEWAKEUP_SWITCH;
}
}
ret = pwrdm_set_next_pwrst(pwrdm, state);
if (ret) {
printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
pwrdm->name);
goto err;
}
switch (sleep_switch) {
case FORCEWAKEUP_SWITCH:
if (pwrdm->pwrdm_clkdms[0]->flags & CLKDM_CAN_ENABLE_AUTO)
clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
else
clkdm_sleep(pwrdm->pwrdm_clkdms[0]);
break;
case LOWPOWERSTATE_SWITCH:
pwrdm_set_lowpwrstchange(pwrdm);
break;
default:
return ret;
}
pwrdm_wait_transition(pwrdm);
pwrdm_state_switch(pwrdm);
err:
return ret;
}
/*
* 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;
}
/*
* This sets pwrdm state (other than mpu & core. Currently only ON &
* RET are supported.
*/
int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 pwrst)
{
u8 curr_pwrst, next_pwrst;
int sleep_switch = -1, ret = 0, hwsup = 0;
if (!pwrdm || IS_ERR(pwrdm))
return -EINVAL;
while (!(pwrdm->pwrsts & (1 << pwrst))) {
if (pwrst == PWRDM_POWER_OFF)
return ret;
pwrst--;
}
next_pwrst = pwrdm_read_next_pwrst(pwrdm);
if (next_pwrst == pwrst)
return ret;
curr_pwrst = pwrdm_read_pwrst(pwrdm);
if (curr_pwrst < PWRDM_POWER_ON) {
if ((curr_pwrst > pwrst) &&
(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) {
sleep_switch = LOWPOWERSTATE_SWITCH;
} else {
hwsup = clkdm_in_hwsup(pwrdm->pwrdm_clkdms[0]);
clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
sleep_switch = FORCEWAKEUP_SWITCH;
}
}
ret = pwrdm_set_next_pwrst(pwrdm, pwrst);
if (ret)
pr_err("%s: unable to set power state of powerdomain: %s\n",
__func__, pwrdm->name);
switch (sleep_switch) {
case FORCEWAKEUP_SWITCH:
if (hwsup)
clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
else
clkdm_sleep(pwrdm->pwrdm_clkdms[0]);
break;
case LOWPOWERSTATE_SWITCH:
pwrdm_set_lowpwrstchange(pwrdm);
pwrdm_wait_transition(pwrdm);
pwrdm_state_switch(pwrdm);
break;
}
return ret;
}
