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authorVille Syrjälä <ville.syrjala@linux.intel.com>2016-10-24 19:13:04 +0300
committerJani Nikula <jani.nikula@intel.com>2016-10-28 15:24:30 +0300
commitc89d5454d48e3b6ecae1c9f8bb14b3fac64d9fc8 (patch)
tree54e43989a694c70d518d572deef4eb61302e994f
parent7e9b3f95d64165f37c6448fe624d835c5adf17b9 (diff)
drm/i915: Fix SKL+ 90/270 degree rotated plane coordinate computation
Pass the framebuffer size in .16 fixed point coordinates to drm_rect_rotate() since that's what the source coordinates are as well at this stage. We used to do this part of the computation in integer coordinates, but that got changed when moving the computation to happen in the check phase of the operation. Unfortunately I forgot to shift up the fb width and height appropriately. With the bogus size we ended up with some negative fb offset, which when added to the vma offset caused out scanout to start at an offset earlier than we inteded. Eg. when testing on my SKL I saw a row of incorrect tiles at the top of my screen. Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> Cc: drm-intel-fixes@lists.freedesktop.org Fixes: b63a16f6cd89 ("drm/i915: Compute display surface offset in the plane check hook for SKL+") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1477325584-23679-1-git-send-email-ville.syrjala@linux.intel.com Tested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (cherry picked from commit da064b47c0b8d0dff1905b38c76e7e51fb5a9547) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
-rw-r--r--drivers/gpu/drm/i915/intel_display.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 319191e6988c..0ad1879bfd9d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2978,7 +2978,8 @@ int skl_check_plane_surface(struct intel_plane_state *plane_state)
/* Rotate src coordinates to match rotated GTT view */
if (intel_rotation_90_or_270(rotation))
drm_rect_rotate(&plane_state->base.src,
- fb->width, fb->height, DRM_ROTATE_270);
+ fb->width << 16, fb->height << 16,
+ DRM_ROTATE_270);
/*
* Handle the AUX surface first since