target/linux/bcm27xx/patches-5.10/950-0695-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch

   1 From 0427e8464446a03d287e7ec8b7bb74dd983b6988 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Mon, 12 Jul 2021 12:27:59 +0100
   4 Subject: [PATCH] drm/vc4: Fix margin calculations for the right/bottom
   5  edges
   6
   7 The calculations clipped the right/bottom edge of the clipped
   8 range based on the left/top margins.
   9
  10 Fixes: 666e73587f90 ("drm/vc4: Take margin setup into account when updating planes")
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  12 ---
  13  drivers/gpu/drm/vc4/vc4_plane.c | 8 ++++----
  14  1 file changed, 4 insertions(+), 4 deletions(-)
  15
  16 --- a/drivers/gpu/drm/vc4/vc4_plane.c
  17 +++ b/drivers/gpu/drm/vc4/vc4_plane.c
  18 @@ -310,16 +310,16 @@ static int vc4_plane_margins_adj(struct
  19                                                adjhdisplay,
  20                                                crtc_state->mode.hdisplay);
  21         vc4_pstate->crtc_x += left;
  22 -       if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - left)
  23 -               vc4_pstate->crtc_x = crtc_state->mode.hdisplay - left;
  24 +       if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - right)
  25 +               vc4_pstate->crtc_x = crtc_state->mode.hdisplay - right;
  26
  27         adjvdisplay = crtc_state->mode.vdisplay - (top + bottom);
  28         vc4_pstate->crtc_y = DIV_ROUND_CLOSEST(vc4_pstate->crtc_y *
  29                                                adjvdisplay,
  30                                                crtc_state->mode.vdisplay);
  31         vc4_pstate->crtc_y += top;
  32 -       if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - top)
  33 -               vc4_pstate->crtc_y = crtc_state->mode.vdisplay - top;
  34 +       if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - bottom)
  35 +               vc4_pstate->crtc_y = crtc_state->mode.vdisplay - bottom;
  36
  37         vc4_pstate->crtc_w = DIV_ROUND_CLOSEST(vc4_pstate->crtc_w *
  38                                                adjhdisplay,