From da064b47c0b8d0dff1905b38c76e7e51fb5a9547 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 24 Oct 2016 19:13:04 +0300 Subject: [PATCH] drm/i915: Fix SKL+ 90/270 degree rotated plane coordinate computation MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Sivakumar Thulasimani 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 Link: http://patchwork.freedesktop.org/patch/msgid/1477325584-23679-1-git-send-email-ville.syrjala@linux.intel.com Tested-by: Tvrtko Ursulin Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/intel_display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2a5a7c2..895b3dc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2985,7 +2985,8 @@ int skl_check_plane_surface(struct intel_plane_state *plane_state) /* Rotate src coordinates to match rotated GTT view */ if (drm_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 -- 2.7.4