drm/msm/sde: update inline rotator to use ccw rotation
DRM rotation property specifies rotation in counter
clockwise direction whereas rotator driver uses clockwise
direction as in hardware. Update inline rotator driver
to convert DRM CCW direction to rotator driver CW direction.
CRs-Fixed: 2041083
Change-Id: Ie5f7d81d0c05da7fe3e26d4f530e43f88447053b
Signed-off-by: Alan Kwong <akwong@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_hw_rot.c b/drivers/gpu/drm/msm/sde/sde_hw_rot.c
index 01fe3c8..d15b804 100644
--- a/drivers/gpu/drm/msm/sde/sde_hw_rot.c
+++ b/drivers/gpu/drm/msm/sde/sde_hw_rot.c
@@ -574,9 +574,16 @@
rot_cmd.video_mode = data->video_mode;
rot_cmd.fps = data->fps;
+
+ /*
+ * DRM rotation property is specified in counter clockwise direction
+ * whereas rotator h/w rotates in clockwise direction.
+ * Convert rotation property to clockwise 90 by toggling h/v flip
+ */
rot_cmd.rot90 = data->rot90;
- rot_cmd.hflip = data->hflip;
- rot_cmd.vflip = data->vflip;
+ rot_cmd.hflip = data->rot90 ? !data->hflip : data->hflip;
+ rot_cmd.vflip = data->rot90 ? !data->vflip : data->vflip;
+
rot_cmd.secure = data->secure;
rot_cmd.clkrate = data->clkrate;
rot_cmd.data_bw = 0;