/* disp_pm_add_refcount - it is called in the early start of the
* update_reg_handler */
int disp_pm_add_refcount(struct display_driver *dispdrv)
{
unsigned long flags;
if (dispdrv->platform_status == DISP_STATUS_PM0) return 0;
if (!dispdrv->pm_status.clock_gating_on) return 0;
if (dispdrv->decon_driver.sfb->power_state == POWER_DOWN)
return 0;
init_gating_idle_count(dispdrv);
flush_kthread_worker(&dispdrv->pm_status.control_clock_gating);
flush_kthread_worker(&dispdrv->pm_status.control_power_gating);
if (dispdrv->decon_driver.sfb->power_state == POWER_HIBER_DOWN)
display_hibernation_power_on(dispdrv);
display_block_clock_on(dispdrv);
spin_lock_irqsave(&dispdrv->pm_status.slock, flags);
if (dispdrv->pm_status.trigger_masked) {
disable_mask(dispdrv);
}
spin_unlock_irqrestore(&dispdrv->pm_status.slock, flags);
return 0;
}
int disp_pm_runtime_get_sync(struct display_driver *dispdrv)
{
if (!dispdrv->pm_status.clock_gating_on) {
pm_runtime_get_sync(dispdrv->display_driver);
return 0;
}
init_gating_idle_count(dispdrv);
/* guarantee clock and power gating */
flush_kthread_worker(&dispdrv->pm_status.control_power_gating);
pm_runtime_get_sync(dispdrv->display_driver);
display_block_clock_on(dispdrv);
return 0;
}
/* disp_pm_add_refcount - it is called in the early start of the
* update_reg_handler */
int disp_pm_add_refcount(struct display_driver *dispdrv)
{
if (dispdrv->platform_status == DISP_STATUS_PM0) return 0;
if (!dispdrv->pm_status.clock_gating_on) return 0;
if (dispdrv->decon_driver.sfb->power_state == POWER_DOWN)
return 0;
init_gating_idle_count(dispdrv);
flush_kthread_worker(&dispdrv->pm_status.control_power_gating);
if (dispdrv->decon_driver.sfb->power_state == POWER_HIBER_DOWN) {
request_dynamic_hotplug(false);
display_hibernation_power_on(dispdrv);
}
display_block_clock_on(dispdrv);
return 0;
}
int display_hibernation_power_off(struct display_driver *dispdrv)
{
int ret = 0;
struct s3c_fb *sfb = dispdrv->decon_driver.sfb;
disp_pm_gate_lock(dispdrv, true);
mutex_lock(&dispdrv->pm_status.pm_lock);
if (sfb->power_state == POWER_DOWN) {
pr_info("%s, DECON are already power off state\n", __func__);
goto done;
}
if (atomic_read(&dispdrv->pm_status.lock_count) > GATE_LOCK_CNT) {
pr_info("%s, DECON does not need power-off\n", __func__);
goto done;
}
/* Should be clock on before check a H/W LINECNT */
display_block_clock_on(dispdrv);
if (get_display_line_count(dispdrv)) {
pm_debug("wait until last frame is totally transferred %d:",
get_display_line_count(dispdrv));
goto done;
}
sfb->power_state = POWER_HIBER_DOWN;
__display_hibernation_power_off(dispdrv);
disp_pm_runtime_put_sync(dispdrv);
request_dynamic_hotplug(true);
done:
mutex_unlock(&dispdrv->pm_status.pm_lock);
disp_pm_gate_lock(dispdrv, false);
return ret;
}