From: Leo Li <sunpeng.li@xxxxxxx>
These two fields are used by DC, and their purposes are not immediately
clear.
Signed-off-by: Leo Li <sunpeng.li@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index f91a9bd..dd4366c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -434,7 +434,27 @@ struct amdgpu_crtc {
struct hrtimer vblank_timer;
enum amdgpu_interrupt_state vsync_timer_enabled;
+ /**
+ * @otg_inst:
+ *
+ * DC output timing generator instance used by this CRTC.
+ *
+ * This is used to search for a corresponding amdgpu_crtc, given
+ * the OTG instance. An example is interrupt handlers, where the handler
+ * is provided the OTG instance.
+ */
int otg_inst;
+
+ /**
+ * @event:
+ *
+ * Vblank event, made to reference the new CRTC state's vblank event
+ * during plane commit. It's used by the DC page flip interrupt handler
+ * to call drm_crtc_send_vblank_event().
+ *
+ * This is needed since the current CRTC state at the time of pflip
+ * interrupt may not be the same as the one used during plane commit.
+ */
struct drm_pending_vblank_event *event;
};
--
2.7.4
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