drm/radeon: add a asic callback to get the xclk
This is required to get the reference clock used
by the gfx engine for things like timestamps. Fixes
support for GL extensions the use timestamps on
certain boards.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 59bfbd3..e425b41 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1179,6 +1179,8 @@
bool (*gui_idle)(struct radeon_device *rdev);
/* wait for mc_idle */
int (*mc_wait_for_idle)(struct radeon_device *rdev);
+ /* get the reference clock */
+ u32 (*get_xclk)(struct radeon_device *rdev);
/* gart */
struct {
void (*tlb_flush)(struct radeon_device *rdev);
@@ -1860,6 +1862,7 @@
#define radeon_post_page_flip(rdev, crtc) (rdev)->asic->pflip.post_page_flip((rdev), (crtc))
#define radeon_wait_for_vblank(rdev, crtc) (rdev)->asic->display.wait_for_vblank((rdev), (crtc))
#define radeon_mc_wait_for_idle(rdev) (rdev)->asic->mc_wait_for_idle((rdev))
+#define radeon_get_xclk(rdev) (rdev)->asic->get_xclk((rdev))
/* Common functions */
/* AGP */