target/linux/bcm27xx/patches-5.10/950-0531-drm-vc4-hdmi-Signal-the-proper-colorimetry-info-in-t.patch

   1 From c1e98dfad80bdb512cd04c9ed5d989a5f0f6b13d Mon Sep 17 00:00:00 2001
   2 From: Maxime Ripard <maxime@cerno.tech>
   3 Date: Fri, 9 Apr 2021 17:16:42 +0200
   4 Subject: [PATCH] drm/vc4: hdmi: Signal the proper colorimetry info in
   5  the infoframe
   6
   7 Our driver while supporting HDR didn't send the proper colorimetry info
   8 in the AVI infoframe.
   9
  10 Let's add the property needed so that the userspace can let us know what
  11 the colorspace is supposed to be.
  12
  13 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  14 ---
  15  drivers/gpu/drm/vc4/vc4_hdmi.c | 10 ++++++++--
  16  1 file changed, 8 insertions(+), 2 deletions(-)
  17
  18 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
  19 +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
  20 @@ -236,7 +236,8 @@ static int vc4_hdmi_connector_atomic_che
  21         if (!crtc)
  22                 return 0;
  23
  24 -       if (!drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
  25 +       if (old_state->colorspace != new_state->colorspace ||
  26 +           !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
  27                 struct drm_crtc_state *crtc_state;
  28
  29                 crtc_state = drm_atomic_get_crtc_state(state, crtc);
  30 @@ -326,6 +327,11 @@ static int vc4_hdmi_connector_init(struc
  31         if (ret)
  32                 return ret;
  33
  34 +       ret = drm_mode_create_hdmi_colorspace_property(connector);
  35 +       if (ret)
  36 +               return ret;
  37 +
  38 +       drm_connector_attach_colorspace_property(connector);
  39         drm_connector_attach_tv_margin_properties(connector);
  40         drm_connector_attach_max_bpc_property(connector, 8, 12);
  41
  42 @@ -440,7 +446,7 @@ static void vc4_hdmi_set_avi_infoframe(s
  43                                            vc4_encoder->limited_rgb_range ?
  44                                            HDMI_QUANTIZATION_RANGE_LIMITED :
  45                                            HDMI_QUANTIZATION_RANGE_FULL);
  46 -
  47 +       drm_hdmi_avi_infoframe_colorspace(&frame.avi, cstate);
  48         drm_hdmi_avi_infoframe_bars(&frame.avi, cstate);
  49
  50         vc4_hdmi_write_infoframe(encoder, &frame);