Since DRM_ROTATE is counter clockwise (which is compliant with Xrandr),
and HW rotation is clockwise, swapping 90/270 to work as expected from
userspace.
v2: Rebased
Suggested-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Sonika Jindal <sonika.jindal@xxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9d2d6fb..a583422 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3010,12 +3010,16 @@ u32 skl_plane_ctl_rotation(unsigned int rotation)
switch (rotation) {
case BIT(DRM_ROTATE_0):
break;
+ /*
+ * DRM_ROTATE_ is counter clockwise to stay compatible with Xrandr
+ * while i915 HW rotation is clockwise, thats why this swapping.
+ */
case BIT(DRM_ROTATE_90):
- return PLANE_CTL_ROTATE_90;
+ return PLANE_CTL_ROTATE_270;
case BIT(DRM_ROTATE_180):
return PLANE_CTL_ROTATE_180;
case BIT(DRM_ROTATE_270):
- return PLANE_CTL_ROTATE_270;
+ return PLANE_CTL_ROTATE_90;
default:
MISSING_CASE(rotation);
}
--
1.7.10.4
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