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drm/i915/skl: Swapping 90 and 270 to be compliant with Xrandr

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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@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Sonika Jindal 2015-05-20 13:40:48 +05:30 • committed by Daniel Vetter
parent 7546a38411
commit 1e8df16778
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/i915/intel_display.c
View file

@ -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);
}