Hi, On 14/10/2025 12:45, Harikrishna Shenoy wrote: > Now that we have DBANC framework and legacy connector functions removed, > handle the HDCP disabling in bridge atomic check rather than in connector > atomic check in !(DBANC) usecase.
This sounds odd. The patch is only adding new code, so "handle the HDCP disabling in bridge atomic check rather than in connector atomic check in !(DBANC) usecase." doesn't quite make sense. Afaiu in patch 3 you removed the HDCP code for !DBANC, and here you add it for DBANC. Correct me if I'm wrong, but HDCP support for DBANC is currently broken in upstream, as the HDCP code is only for the !DBANC case? Isn't this patch then similar to patch 2, which is a fix for a missing feature with DBANC? So should this also be a fix, and perhaps be moved as after patch 2? Tomi > Signed-off-by: Harikrishna Shenoy <[email protected]> > --- > .../drm/bridge/cadence/cdns-mhdp8546-core.c | 23 +++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c > b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c > index 06ac5c2ee78f..120eb7ffe20c 100644 > --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c > +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c > @@ -1962,6 +1962,10 @@ static int cdns_mhdp_atomic_check(struct drm_bridge > *bridge, > { > struct cdns_mhdp_device *mhdp = bridge_to_mhdp(bridge); > const struct drm_display_mode *mode = &crtc_state->adjusted_mode; > + struct drm_connector_state *old_state, *new_state; > + struct drm_atomic_state *state = crtc_state->state; > + struct drm_connector *conn = mhdp->connector; > + u64 old_cp, new_cp; > > mutex_lock(&mhdp->link_mutex); > > @@ -1981,6 +1985,25 @@ static int cdns_mhdp_atomic_check(struct drm_bridge > *bridge, > if (mhdp->info) > bridge_state->input_bus_cfg.flags = > *mhdp->info->input_bus_flags; > > + if (conn && mhdp->hdcp_supported) { > + old_state = drm_atomic_get_old_connector_state(state, conn); > + new_state = drm_atomic_get_new_connector_state(state, conn); > + old_cp = old_state->content_protection; > + new_cp = new_state->content_protection; > + > + if (old_state->hdcp_content_type != > new_state->hdcp_content_type && > + new_cp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) { > + new_state->content_protection = > DRM_MODE_CONTENT_PROTECTION_DESIRED; > + crtc_state = drm_atomic_get_new_crtc_state(state, > new_state->crtc); > + crtc_state->mode_changed = true; > + } > + > + if (!new_state->crtc) { > + if (old_cp == DRM_MODE_CONTENT_PROTECTION_ENABLED) > + new_state->content_protection = > DRM_MODE_CONTENT_PROTECTION_DESIRED; > + } > + } > + > mutex_unlock(&mhdp->link_mutex); > return 0; > }
