-/**
- * radeon_irq_kms_wait_gui_idle - waits for drawing engine to be idle
- *
- * @rdev: radeon device pointer
- *
- * Enabled the GUI idle interrupt and waits for it to fire (r6xx+).
- * This is currently used to make sure the 3D engine is idle for power
- * management, but should be replaces with proper fence waits.
- * GUI idle interrupts don't work very well on pre-r6xx hw and it also
- * does not take into account other aspects of the chip that may be busy.
- * DO NOT USE GOING FORWARD.
- */
-int radeon_irq_kms_wait_gui_idle(struct radeon_device *rdev)
-{
- unsigned long irqflags;
- int r;
-
- spin_lock_irqsave(&rdev->irq.lock, irqflags);
- rdev->irq.gui_idle = true;
- radeon_irq_set(rdev);
- spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
-
- r = wait_event_timeout(rdev->irq.idle_queue, radeon_gui_idle(rdev),
- msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT));
-
- spin_lock_irqsave(&rdev->irq.lock, irqflags);
- rdev->irq.gui_idle = false;
- radeon_irq_set(rdev);
- spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
- return r;
-}