void kbase_pm_do_poweroff(kbase_device *kbdev)
{
unsigned long flags;
mali_bool cores_are_available;
lockdep_assert_held(&kbdev->pm.lock);
spin_lock_irqsave(&kbdev->pm.power_change_lock, flags);
/* Force all cores off */
kbdev->pm.desired_shader_state = 0;
/* Force all cores to be unavailable, in the situation where
* transitions are in progress for some cores but not others,
* and kbase_pm_check_transitions_nolock can not immediately
* power off the cores */
kbdev->shader_available_bitmap = 0;
kbdev->tiler_available_bitmap = 0;
kbdev->l2_available_bitmap = 0;
KBASE_TIMELINE_PM_CHECKTRANS(kbdev, SW_FLOW_PM_CHECKTRANS_PM_DO_POWEROFF_START);
cores_are_available = kbase_pm_check_transitions_nolock(kbdev);
KBASE_TIMELINE_PM_CHECKTRANS(kbdev, SW_FLOW_PM_CHECKTRANS_PM_DO_POWEROFF_END);
/* Don't need 'cores_are_available', because we don't return anything */
CSTD_UNUSED(cores_are_available);
spin_unlock_irqrestore(&kbdev->pm.power_change_lock, flags);
/* NOTE: We won't wait to reach the core's desired state, even if we're
* powering off the GPU itself too. It's safe to cut the power whilst
* they're transitioning to off, because the cores should be idle and all
* cache flushes should already have occurred */
/* Consume any change-state events */
kbase_timeline_pm_check_handle_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_STATE_CHANGED);
/* Disable interrupts and turn the clock off */
kbase_pm_clock_off(kbdev);
}
/** Check whether a state change has finished, and trace it as completed */
STATIC void kbase_pm_trace_check_and_finish_state_change(kbase_device *kbdev)
{
if ((kbdev->shader_available_bitmap & kbdev->pm.desired_shader_state) == kbdev->pm.desired_shader_state
&& (kbdev->tiler_available_bitmap & kbdev->pm.desired_tiler_state) == kbdev->pm.desired_tiler_state)
kbase_timeline_pm_check_handle_event(kbdev, KBASE_TIMELINE_PM_EVENT_GPU_STATE_CHANGED);
}
