drm/i915: Add 180 degree sprite rotation support
The sprite planes (in fact all display planes starting from gen4)
support 180 degree rotation. Add the relevant low level bits to the
sprite code to make use of that feature.
The upper layers are not yet plugged in.
v2: HSW handles the rotated buffer offset automagically
v3: BDW also handles the rotated buffer offset automagically
Testcase: igt/kms_rotation_crc
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 3198de3..b63df44 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -448,6 +448,7 @@
unsigned int crtc_w, crtc_h;
uint32_t src_x, src_y;
uint32_t src_w, src_h;
+ unsigned int rotation;
/* Since we need to change the watermarks before/after
* enabling/disabling the planes, we need to store the parameters here