target/linux/brcm2708/patches-4.19/950-0120-drm-vc4-Skip-SET_CURSOR_INFO-when-the-cursor-content.patch

   1 From b77d51293dce1ff08da64c4bb95c13d2cb4c3ee7 Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Mon, 5 Feb 2018 18:02:30 +0000
   4 Subject: [PATCH 120/703] drm/vc4: Skip SET_CURSOR_INFO when the cursor
   5  contents didn't change.
   6
   7 Signed-off-by: Eric Anholt <eric@anholt.net>
   8 ---
   9  drivers/gpu/drm/vc4/vc4_firmware_kms.c | 30 +++++++++++++++++---------
  10  1 file changed, 20 insertions(+), 10 deletions(-)
  11
  12 --- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  13 +++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  14 @@ -204,10 +204,6 @@ static void vc4_cursor_plane_atomic_upda
  15                 state->crtc_y,
  16                 0
  17         };
  18 -       u32 packet_info[] = { state->crtc_w, state->crtc_h,
  19 -                             0, /* unused */
  20 -                             bo->paddr + fb->offsets[0],
  21 -                             0, 0, /* hotx, hoty */};
  22         WARN_ON_ONCE(fb->pitches[0] != state->crtc_w * 4);
  23
  24         DRM_DEBUG_ATOMIC("[PLANE:%d:%s] update %dx%d cursor at %d,%d (0x%08x/%d)",
  25 @@ -232,12 +228,26 @@ static void vc4_cursor_plane_atomic_upda
  26         if (ret || packet_state[0] != 0)
  27                 DRM_ERROR("Failed to set cursor state: 0x%08x\n", packet_state[0]);
  28
  29 -       ret = rpi_firmware_property(vc4->firmware,
  30 -                                   RPI_FIRMWARE_SET_CURSOR_INFO,
  31 -                                   &packet_info,
  32 -                                   sizeof(packet_info));
  33 -       if (ret || packet_info[0] != 0)
  34 -               DRM_ERROR("Failed to set cursor info: 0x%08x\n", packet_info[0]);
  35 +       /* Note: When the cursor contents change, the modesetting
  36 +        * driver calls drm_mode_cursor_univeral() with
  37 +        * DRM_MODE_CURSOR_BO, which means a new fb will be allocated.
  38 +        */
  39 +       if (!old_state ||
  40 +           state->crtc_w != old_state->crtc_w ||
  41 +           state->crtc_h != old_state->crtc_h ||
  42 +           fb != old_state->fb) {
  43 +               u32 packet_info[] = { state->crtc_w, state->crtc_h,
  44 +                                     0, /* unused */
  45 +                                     bo->paddr + fb->offsets[0],
  46 +                                     0, 0, /* hotx, hoty */};
  47 +
  48 +               ret = rpi_firmware_property(vc4->firmware,
  49 +                                           RPI_FIRMWARE_SET_CURSOR_INFO,
  50 +                                           &packet_info,
  51 +                                           sizeof(packet_info));
  52 +               if (ret || packet_info[0] != 0)
  53 +                       DRM_ERROR("Failed to set cursor info: 0x%08x\n", packet_info[0]);
  54 +       }
  55  }
  56
  57  static void vc4_cursor_plane_atomic_disable(struct drm_plane *plane,