target/linux/layerscape/patches-5.4/805-display-0027-drm-imx-hdp-force-a-mode-set-when-colorspace-is-chan.patch

   1 From da02a33c186db04986166659caafb0c2da5bf7f0 Mon Sep 17 00:00:00 2001
   2 From: Laurentiu Palcu <laurentiu.palcu@nxp.com>
   3 Date: Fri, 15 Nov 2019 10:00:55 +0200
   4 Subject: [PATCH] drm/imx/hdp: force a mode set when colorspace is changed
   5
   6 If the userspace changes the connector Colorspace property, we need to force a
   7 modeset, so that the entire pipeline is properly configured.
   8
   9 Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
  10 ---
  11  drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c | 6 ++++--
  12  1 file changed, 4 insertions(+), 2 deletions(-)
  13
  14 --- a/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
  15 +++ b/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
  16 @@ -314,14 +314,16 @@ static int cdns_hdmi_connector_atomic_ch
  17         struct drm_crtc_state *new_crtc_state;
  18
  19         if (!blob_equal(new_con_state->hdr_output_metadata,
  20 -                       old_con_state->hdr_output_metadata)) {
  21 +                       old_con_state->hdr_output_metadata) ||
  22 +           new_con_state->colorspace != old_con_state->colorspace) {
  23                 new_crtc_state = drm_atomic_get_crtc_state(state, crtc);
  24                 if (IS_ERR(new_crtc_state))
  25                         return PTR_ERR(new_crtc_state);
  26
  27                 new_crtc_state->mode_changed =
  28                         !new_con_state->hdr_output_metadata ||
  29 -                       !old_con_state->hdr_output_metadata;
  30 +                       !old_con_state->hdr_output_metadata ||
  31 +                       new_con_state->colorspace != old_con_state->colorspace;
  32         }
  33
  34         return 0;