git.openwrt.org Git - openwrt/staging/pepe2k.git/blob

   1 From 63c0bcc4b7474c220c47a661526744edac18e75a Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Fri, 5 Apr 2024 17:34:09 +0100
   4 Subject: [PATCH 1065/1085] drm/vc4: Add option to call from crtc to encoder on
   5  vblank
   6
   7 DSI0 is misbehaving and needs to action things on vblank to
   8 work around it.
   9 Add a new hook to call across during vblank.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  12 ---
  13  drivers/gpu/drm/vc4/vc4_crtc.c | 12 +++++++++++-
  14  drivers/gpu/drm/vc4/vc4_drv.h  |  1 +
  15  2 files changed, 12 insertions(+), 1 deletion(-)
  16
  17 --- a/drivers/gpu/drm/vc4/vc4_crtc.c
  18 +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
  19 @@ -827,12 +827,15 @@ static void vc4_disable_vblank(struct dr
  20  {
  21         struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
  22         struct drm_device *dev = crtc->dev;
  23 +       struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, crtc->state);
  24 +       struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
  25         int idx;
  26
  27         if (!drm_dev_enter(dev, &idx))
  28                 return;
  29
  30 -       CRTC_WRITE(PV_INTEN, 0);
  31 +       if (vc4_encoder->type != VC4_ENCODER_TYPE_DSI0)
  32 +               CRTC_WRITE(PV_INTEN, 0);
  33
  34         drm_dev_exit(idx);
  35  }
  36 @@ -877,7 +880,14 @@ static void vc4_crtc_handle_page_flip(st
  37
  38  void vc4_crtc_handle_vblank(struct vc4_crtc *crtc)
  39  {
  40 +       struct drm_encoder *encoder = vc4_get_crtc_encoder(&crtc->base, crtc->base.state);
  41 +       struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
  42 +
  43         crtc->t_vblank = ktime_get();
  44 +
  45 +       if (vc4_encoder && vc4_encoder->vblank)
  46 +               vc4_encoder->vblank(encoder);
  47 +
  48         drm_crtc_handle_vblank(&crtc->base);
  49         vc4_crtc_handle_page_flip(crtc);
  50  }
  51 --- a/drivers/gpu/drm/vc4/vc4_drv.h
  52 +++ b/drivers/gpu/drm/vc4/vc4_drv.h
  53 @@ -503,6 +503,7 @@ struct vc4_encoder {
  54
  55         void (*post_crtc_disable)(struct drm_encoder *encoder, struct drm_atomic_state *state);
  56         void (*post_crtc_powerdown)(struct drm_encoder *encoder, struct drm_atomic_state *state);
  57 +       void (*vblank)(struct drm_encoder *encoder);
  58  };
  59
  60  #define to_vc4_encoder(_encoder)                               \