target/linux/bcm27xx/patches-5.15/950-0805-drm-vc4-Force-trigger-of-dlist-update-on-margins-cha.patch

   1 From decd9119a1379d04b875747405b78427b36b8d88 Mon Sep 17 00:00:00 2001
   2 From: 6by9 <6by9@users.noreply.github.com>
   3 Date: Fri, 1 Apr 2022 11:31:38 +0100
   4 Subject: [PATCH] drm/vc4: Force trigger of dlist update on margins
   5  change (#4970)
   6
   7 When the margins are changed, the dlist needs to be regenerated
   8 with the changed updated dest regions for each of the planes.
   9
  10 Setting the zpos_changed flag is sufficient to trigger that
  11 without doing a full modeset, therefore set it should the
  12 margins be changed.
  13
  14 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  15 ---
  16  drivers/gpu/drm/vc4/vc4_crtc.c | 14 ++++++++++----
  17  drivers/gpu/drm/vc4/vc4_drv.h  |  7 +------
  18  2 files changed, 11 insertions(+), 10 deletions(-)
  19
  20 --- a/drivers/gpu/drm/vc4/vc4_crtc.c
  21 +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
  22 @@ -728,10 +728,16 @@ static int vc4_crtc_atomic_check(struct
  23                 if (conn_state->crtc != crtc)
  24                         continue;
  25
  26 -               vc4_state->margins.left = conn_state->tv.margins.left;
  27 -               vc4_state->margins.right = conn_state->tv.margins.right;
  28 -               vc4_state->margins.top = conn_state->tv.margins.top;
  29 -               vc4_state->margins.bottom = conn_state->tv.margins.bottom;
  30 +               if (memcmp(&vc4_state->margins, &conn_state->tv.margins,
  31 +                          sizeof(vc4_state->margins))) {
  32 +                       memcpy(&vc4_state->margins, &conn_state->tv.margins,
  33 +                              sizeof(vc4_state->margins));
  34 +
  35 +                       /* Need to force the dlist entries for all planes to be
  36 +                        * updated so that the dest rectangles are changed.
  37 +                        */
  38 +                       crtc_state->zpos_changed = true;
  39 +               }
  40                 break;
  41         }
  42
  43 --- a/drivers/gpu/drm/vc4/vc4_drv.h
  44 +++ b/drivers/gpu/drm/vc4/vc4_drv.h
  45 @@ -589,12 +589,7 @@ struct vc4_crtc_state {
  46         bool txp_armed;
  47         unsigned int assigned_channel;
  48
  49 -       struct {
  50 -               unsigned int left;
  51 -               unsigned int right;
  52 -               unsigned int top;
  53 -               unsigned int bottom;
  54 -       } margins;
  55 +       struct drm_connector_tv_margins margins;
  56
  57         unsigned long hvs_load;
  58