radeon_suspend_kms
extern int radeon_suspend_kms(struct drm_device *dev, bool suspend,
radeon_suspend_kms(dev, true, true, false);
int radeon_suspend_kms(struct drm_device *dev, bool suspend,
return radeon_suspend_kms(drm_dev, true, true, false);
return radeon_suspend_kms(drm_dev, false, true, true);
ret = radeon_suspend_kms(drm_dev, false, false, false);
return -radeon_suspend_kms(dev, true, true, false);