From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Starting from commit b63a16f6cd89 ("drm/i915: Compute display surface
offset in the plane check hook for SKL+") we've already rotated the src
coordinates by 270 degrees by the time we check if a scaler is needed
or not, so we must not account for the rotation a second time.
Previously we did these steps in the opposite order and hence the
scaler check had to deal with rotation itself. The double rotation
handling causes us to enable a scaler pretty much every time 90/270
degree plane rotation is requested, leading to fuzzier fonts and whatnot.
v2: s/unsigned/unsigned int/ to appease checkpatch
v3: s/DRM_ROTATE_0/DRM_MODE_ROTATE_0/
Cc: sta...@vger.kernel.org
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Reported-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Tested-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Fixes: b63a16f6cd89 ("drm/i915: Compute display surface offset in the plane
check hook for SKL+")
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Link:
http://patchwork.freedesktop.org/patch/msgid/20170331180056.14086-2-ville.syrj...@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
(cherry picked from commit d96a7d2adb040a67e163a82dad6316f9f572498a)
---
drivers/gpu/drm/i915/intel_display.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 3cabe52a4e3b..c3785d404ba5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4598,7 +4598,7 @@ static void cpt_verify_modeset(struct drm_device *dev,
int pipe)
static int
skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
- unsigned scaler_user, int *scaler_id, unsigned int rotation,
+ unsigned int scaler_user, int *scaler_id,
int src_w, int src_h, int dst_w, int dst_h)
{
struct intel_crtc_scaler_state *scaler_state =
@@ -4607,9 +4607,12 @@ skl_update_scaler(struct intel_crtc_state *crtc_state,
bool force_detach,
to_intel_crtc(crtc_state->base.crtc);
int need_scaling;
- need_scaling = drm_rotation_90_or_270(rotation) ?
- (src_h != dst_w || src_w != dst_h):
- (src_w != dst_w || src_h != dst_h);
+ /*
+ * Src coordinates are already rotated by 270 degrees for
+ * the 90/270 degree plane rotation cases (to match the
+ * GTT mapping), hence no need to account for rotation here.
+ */
+ need_scaling = src_w != dst_w || src_h != dst_h;
/*
* if plane is being disabled or scaler is no more required or force
detach
@@ -4671,7 +4674,7 @@ int skl_update_scaler_crtc(struct intel_crtc_state *state)
const struct drm_display_mode *adjusted_mode =
&state->base.adjusted_mode;
return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
- &state->scaler_state.scaler_id, DRM_ROTATE_0,
+ &state->scaler_state.scaler_id,
state->pipe_src_w, state->pipe_src_h,
adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay);
}
@@ -4700,7 +4703,6 @@ static int skl_update_scaler_plane(struct
intel_crtc_state *crtc_state,
ret = skl_update_scaler(crtc_state, force_detach,
drm_plane_index(&intel_plane->base),
&plane_state->scaler_id,
- plane_state->base.rotation,
drm_rect_width(&plane_state->base.src) >> 16,
drm_rect_height(&plane_state->base.src) >> 16,
drm_rect_width(&plane_state->base.dst),
--
2.13.0
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