drm/i915: Store the final plane stride in plane_state

Let's store the final plane stride in the plane state. This avoids
having to pick between the normal vs. rotated stride during hardware
programming. And once we get GTT remapping the plane stride will
no longer match the fb stride so we'll need a place to store it
anyway.

v2: Keep checking fb->pitches[0] for cursor as later on we won't
    populate plane_state->color_plane[0].stride for invisible planes
    and we have been checking the cursor fb stride even for invisible
    planes
v3: s/betwen/between in commit msg (José)
v4: Check color_plane[0].stride instead of fb->pitches[0] in
    the skl_check_main_surface() X-tiling kludge

Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180911150139.23922-1-ville.syrjala@linux.intel.com

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 0c7a046b4f26..2e06f9831ff4 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -502,6 +502,12 @@ struct intel_plane_state {
 
 	struct {
 		u32 offset;
+		/*
+		 * Plane stride in:
+		 * bytes for 0/180 degree rotation
+		 * pixels for 90/270 degree rotation
+		 */
+		u32 stride;
 		int x, y;
 	} color_plane[2];
 
@@ -1653,8 +1659,8 @@ u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
 u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
 		  const struct intel_plane_state *plane_state);
 u32 glk_color_ctl(const struct intel_plane_state *plane_state);
-u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
-		     unsigned int rotation);
+u32 skl_plane_stride(const struct intel_plane_state *plane_state,
+		     int plane);
 int skl_check_plane_surface(const struct intel_crtc_state *crtc_state,
 			    struct intel_plane_state *plane_state);
 int i9xx_check_plane_surface(struct intel_plane_state *plane_state);