target/linux/bcm27xx/patches-6.1/950-1032-drm-vc4-Correct-address-offset-for-planes-with-src_-.patch

   1 From 6ab30a5dd3fb2ccbd918f147e91eb9bfe9849970 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Mon, 16 Oct 2023 12:13:38 +0100
   4 Subject: [PATCH] drm/vc4: Correct address offset for planes with src_[xy]
   5  offsets
   6
   7 11cf37e741b4 switched to using drm_fb_dma_get_gem_addr instead of
   8 drm_fb_dma_get_gem_obj and adding fb->offset[].
   9
  10 However the tiled formats need to compute the offset in a more
  11 involved manner than drm_fb_dma_get_gem_addr applies, and we
  12 were ending up with the offset for src_[xy] being applied twice.
  13
  14 Switch back to using drm_fb_dma_get_gem_obj and fully computing
  15 the offsets ourselves.
  16
  17 Fixes: 11cf37e741b4 ("drm/vc4: Move the buffer offset out of the vc4_plane_state")
  18 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  19 ---
  20  drivers/gpu/drm/vc4/vc4_plane.c | 9 ++++-----
  21  1 file changed, 4 insertions(+), 5 deletions(-)
  22
  23 --- a/drivers/gpu/drm/vc4/vc4_plane.c
  24 +++ b/drivers/gpu/drm/vc4/vc4_plane.c
  25 @@ -1447,9 +1447,9 @@ static int vc4_plane_mode_set(struct drm
  26         vc4_state->ptr0_offset[0] = vc4_state->dlist_count;
  27
  28         for (i = 0; i < num_planes; i++) {
  29 -               dma_addr_t paddr = drm_fb_dma_get_gem_addr(fb, state, i);
  30 +               struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, i);
  31
  32 -               vc4_dlist_write(vc4_state, paddr + offsets[i]);
  33 +               vc4_dlist_write(vc4_state, bo->dma_addr + fb->offsets[i] + offsets[i]);
  34         }
  35
  36         /* Pointer Context Word 0/1/2: Written by the HVS */
  37 @@ -1842,9 +1842,8 @@ static int vc6_plane_mode_set(struct drm
  38          * TODO: This only covers Raster Scan Order planes
  39          */
  40         for (i = 0; i < num_planes; i++) {
  41 -               dma_addr_t paddr = drm_fb_dma_get_gem_addr(fb, state, i);
  42 -
  43 -               paddr += offsets[i];
  44 +               struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, i);
  45 +               dma_addr_t paddr = bo->dma_addr + fb->offsets[i] + offsets[i];
  46
  47                 /* Pointer Word 0 */
  48                 vc4_state->ptr0_offset[i] = vc4_state->dlist_count;