drm/radeon: Save and restore bios scratch regs during S/R
[airlied:- adapted slightly in naming]
Signed-off-by: Yang Zhao <yang@yangman.ca>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 523d6cb..dde1381 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -383,6 +383,8 @@
extern void radeon_combios_initialize_bios_scratch_regs(struct drm_device *dev);
extern void radeon_atom_output_lock(struct drm_encoder *encoder, bool lock);
extern void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev);
+extern void radeon_save_bios_scratch_regs(struct radeon_device *rdev);
+extern void radeon_restore_bios_scratch_regs(struct radeon_device *rdev);
extern void
radeon_atombios_encoder_crtc_scratch_regs(struct drm_encoder *encoder, int crtc);
extern void