static void mapphone_panel_disable(struct omap_dss_device *dssdev)
{
mapphone_panel_reset(false);
mapphone_panel_regulator_disable();
/* change the DSS power state to RET with LCD off */
if (dss_pwrdm)
omap4_set_pwrdm_state(dss_pwrdm, PWRDM_POWER_RET);
}
static int mapphone_panel_enable(struct omap_dss_device *dssdev)
{ int ret;
/* change the DSS power state to INACTIVE with LCD on */
if (dss_pwrdm)
omap4_set_pwrdm_state(dss_pwrdm, PWRDM_POWER_INACTIVE);
ret = mapphone_panel_regulator_enable();
if (!ret)
mapphone_panel_reset(true);
return ret;
}
/**
* omap4_enter_idle - Programs OMAP4 to enter the specified state
* @dev: cpuidle device
* @state: The target state to be programmed
*
* Called from the CPUidle framework to program the device to the
* specified low power state selected by the governor.
* Returns the amount of time spent in the low power state.
*/
static int omap4_enter_idle(struct cpuidle_device *dev,
struct cpuidle_state *state)
{
struct omap4_processor_cx *cx = cpuidle_get_statedata(state);
struct timespec ts_preidle, ts_postidle, ts_idle;
u32 cpu1_state;
int cpu_id = smp_processor_id();
/* Used to keep track of the total time in idle */
getnstimeofday(&ts_preidle);
local_irq_disable();
local_fiq_disable();
/*
* Do only WFI for non-boot CPU(aux cores)
*/
if (dev->cpu) {
wmb();
DO_WFI();
goto return_sleep_time;
}
/*
* Do only a WFI as long as CPU1 is online
*/
if (num_online_cpus() > 1) {
wmb();
DO_WFI();
goto return_sleep_time;
}
/*
* Hold on till CPU1 hits OFF
*/
cpu1_state = pwrdm_read_pwrst(cpu1_pd);
if (cpu1_state != PWRDM_POWER_OFF) {
wmb();
DO_WFI();
goto return_sleep_time;
}
if (cx->type > OMAP4_STATE_C1)
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu_id);
#ifdef CONFIG_PM_DEBUG
pwrdm_pre_transition();
#endif
pwrdm_set_logic_retst(mpu_pd, cx->mpu_logic_state);
omap4_set_pwrdm_state(mpu_pd, cx->mpu_state);
pwrdm_set_logic_retst(core_pd, cx->core_logic_state);
omap4_set_pwrdm_state(core_pd, cx->core_state);
omap4_enter_sleep(dev->cpu, cx->cpu0_state);
/* restore the MPU and CORE states to ON */
omap4_set_pwrdm_state(mpu_pd, PWRDM_POWER_ON);
omap4_set_pwrdm_state(core_pd, PWRDM_POWER_ON);
#ifdef CONFIG_PM_DEBUG
pwrdm_post_transition();
#endif
if (cx->type > OMAP4_STATE_C1)
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu_id);
return_sleep_time:
getnstimeofday(&ts_postidle);
ts_idle = timespec_sub(ts_postidle, ts_preidle);
local_irq_enable();
local_fiq_enable();
return ts_idle.tv_nsec / NSEC_PER_USEC + ts_idle.tv_sec * USEC_PER_SEC;;
}
