target/linux/bcm27xx/patches-5.10/950-0624-drm-vc4-FKMS-Change-of-Broadcast-RGB-mode-needs-a-mo.patch

   1 From caa5d5dac396f5bfaef8bd65c1c39f4ff03a504a Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Fri, 21 May 2021 11:15:04 +0100
   4 Subject: [PATCH] drm/vc4: FKMS: Change of Broadcast RGB mode needs a
   5  mode change
   6
   7 The Broadcast RGB (aka HDMI limited/full range) property is only
   8 notified to the firmware on mode change, so this needs to be
   9 signalled when set.
  10
  11 https://github.com/raspberrypi/firmware/issues/1580
  12
  13 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  14 ---
  15  drivers/gpu/drm/vc4/vc4_firmware_kms.c | 29 ++++++++++++++++++++++++++
  16  1 file changed, 29 insertions(+)
  17
  18 --- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  19 +++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
  20 @@ -1549,6 +1549,34 @@ int vc4_connector_atomic_set_property(st
  21         return -EINVAL;
  22  }
  23
  24 +int vc4_connector_atomic_check(struct drm_connector *connector,
  25 +                              struct drm_atomic_state *state)
  26 +{
  27 +       struct drm_connector_state *old_state =
  28 +               drm_atomic_get_old_connector_state(state, connector);
  29 +       struct vc4_fkms_connector_state *vc4_old_state =
  30 +                                       to_vc4_fkms_connector_state(old_state);
  31 +       struct drm_connector_state *new_state =
  32 +               drm_atomic_get_new_connector_state(state, connector);
  33 +       struct vc4_fkms_connector_state *vc4_new_state =
  34 +                                       to_vc4_fkms_connector_state(new_state);
  35 +       struct drm_crtc *crtc = new_state->crtc;
  36 +
  37 +       if (!crtc)
  38 +               return 0;
  39 +
  40 +       if (vc4_old_state->broadcast_rgb != vc4_new_state->broadcast_rgb) {
  41 +               struct drm_crtc_state *crtc_state;
  42 +
  43 +               crtc_state = drm_atomic_get_crtc_state(state, crtc);
  44 +               if (IS_ERR(crtc_state))
  45 +                       return PTR_ERR(crtc_state);
  46 +
  47 +               crtc_state->mode_changed = true;
  48 +       }
  49 +       return 0;
  50 +}
  51 +
  52  static void vc4_hdmi_connector_reset(struct drm_connector *connector)
  53  {
  54         drm_atomic_helper_connector_reset(connector);
  55 @@ -1569,6 +1597,7 @@ static const struct drm_connector_funcs
  56  static const struct drm_connector_helper_funcs vc4_fkms_connector_helper_funcs = {
  57         .get_modes = vc4_fkms_connector_get_modes,
  58         .best_encoder = vc4_fkms_connector_best_encoder,
  59 +       .atomic_check = vc4_connector_atomic_check,
  60  };
  61
  62  static const struct drm_connector_helper_funcs vc4_fkms_lcd_conn_helper_funcs = {