On Mon, Apr 11, 2022 at 08:47:31PM +0000, Sean Paul wrote: > From: Sean Paul <seanpaul@xxxxxxxxxxxx> > > Instead of forcing a modeset in the hdcp atomic check, simply return > true if the content protection value is changing and let the driver > decide whether a modeset is required or not. > > Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx> > Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx> > Link: https://patchwork.freedesktop.org/patch/msgid/20210913175747.47456-3-sean@xxxxxxxxxx #v1 > Link: https://patchwork.freedesktop.org/patch/msgid/20210915203834.1439-3-sean@xxxxxxxxxx #v2 > Link: https://patchwork.freedesktop.org/patch/msgid/20211001151145.55916-3-sean@xxxxxxxxxx #v3 > Link: https://patchwork.freedesktop.org/patch/msgid/20211105030434.2828845-3-sean@xxxxxxxxxx #v4 > > Changes in v2: > -None > Changes in v3: > -None > Changes in v4: > -None > Changes in v5: > -None > --- > drivers/gpu/drm/drm_hdcp.c | 33 +++++++++++++++------ > drivers/gpu/drm/i915/display/intel_atomic.c | 5 ++-- > include/drm/drm_hdcp.h | 2 +- > 3 files changed, 27 insertions(+), 13 deletions(-) > > diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c > index 522326b03e66..dd8fa91c51d6 100644 > --- a/drivers/gpu/drm/drm_hdcp.c > +++ b/drivers/gpu/drm/drm_hdcp.c > @@ -430,11 +430,14 @@ EXPORT_SYMBOL(drm_hdcp_update_content_protection); > * @connector: drm_connector on which content protection state needs an update > * > * This function can be used by display drivers to perform an atomic check on the > - * hdcp state elements. If hdcp state has changed, this function will set > - * mode_changed on the crtc driving the connector so it can update its hardware > - * to match the hdcp state. > + * hdcp state elements. If hdcp state has changed in a manner which requires the > + * driver to enable or disable content protection, this function will return > + * true. > + * > + * Returns: > + * true if the driver must enable/disable hdcp, false otherwise > */ > -void drm_hdcp_atomic_check(struct drm_connector *connector, > +bool drm_hdcp_atomic_check(struct drm_connector *connector, > struct drm_atomic_state *state) > { > struct drm_connector_state *new_conn_state, *old_conn_state; > @@ -452,10 +455,12 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, > * If the connector is being disabled with CP enabled, mark it > * desired so it's re-enabled when the connector is brought back > */ > - if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) > + if (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED) { > new_conn_state->content_protection = > DRM_MODE_CONTENT_PROTECTION_DESIRED; > - return; > + return true; > + } > + return false; > } > > new_crtc_state = drm_atomic_get_new_crtc_state(state, > @@ -467,9 +472,19 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, > */ > if (drm_atomic_crtc_needs_modeset(new_crtc_state) && > (old_hdcp == DRM_MODE_CONTENT_PROTECTION_ENABLED && > - new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) > + new_hdcp != DRM_MODE_CONTENT_PROTECTION_UNDESIRED)) { > new_conn_state->content_protection = > DRM_MODE_CONTENT_PROTECTION_DESIRED; > + return true; > + } > + > + /* > + * Coming back from disable or changing CRTC with DESIRED state requires > + * that the driver try CP enable. > + */ > + if (new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED && > + new_conn_state->crtc != old_conn_state->crtc) > + return true; I'm with the feeling that this chunk should deserve a separated patch. But the reason looks correct so anyway Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> > > /* > * Nothing to do if content type is unchanged and one of: > @@ -484,9 +499,9 @@ void drm_hdcp_atomic_check(struct drm_connector *connector, > new_hdcp == DRM_MODE_CONTENT_PROTECTION_DESIRED)) { > if (old_conn_state->hdcp_content_type == > new_conn_state->hdcp_content_type) > - return; > + return false; > } > > - new_crtc_state->mode_changed = true; > + return true; > } > EXPORT_SYMBOL(drm_hdcp_atomic_check); > diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c > index b301a4d1017e..6d24b3450399 100644 > --- a/drivers/gpu/drm/i915/display/intel_atomic.c > +++ b/drivers/gpu/drm/i915/display/intel_atomic.c > @@ -124,8 +124,6 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, > to_intel_digital_connector_state(old_state); > struct drm_crtc_state *crtc_state; > > - drm_hdcp_atomic_check(conn, state); > - > if (!new_state->crtc) > return 0; > > @@ -142,7 +140,8 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, > new_conn_state->base.content_type != old_conn_state->base.content_type || > new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode || > new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state || > - !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) > + !drm_connector_atomic_hdr_metadata_equal(old_state, new_state) || > + drm_hdcp_atomic_check(conn, state)) > crtc_state->mode_changed = true; > > return 0; > diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h > index d49977a042e1..e6e3d16bc7d3 100644 > --- a/include/drm/drm_hdcp.h > +++ b/include/drm/drm_hdcp.h > @@ -301,7 +301,7 @@ int drm_connector_attach_content_protection_property( > struct drm_connector *connector, bool hdcp_content_type); > void drm_hdcp_update_content_protection(struct drm_connector *connector, > u64 val); > -void drm_hdcp_atomic_check(struct drm_connector *connector, > +bool drm_hdcp_atomic_check(struct drm_connector *connector, > struct drm_atomic_state *state); > > /* Content Type classification for HDCP2.2 vs others */ > -- > Sean Paul, Software Engineer, Google / Chromium OS >
