• Ramalingam C's avatar
    drm: Add Content protection type property · 7672dbba
    Ramalingam C authored
    This patch adds a DRM ENUM property to the selected connectors.
    This property is used for mentioning the protected content's type
    from userspace to kernel HDCP authentication.
    
    Type of the stream is decided by the protected content providers.
    Type 0 content can be rendered on any HDCP protected display wires.
    But Type 1 content can be rendered only on HDCP2.2 protected paths.
    
    So when a userspace sets this property to Type 1 and starts the HDCP
    enable, kernel will honour it only if HDCP2.2 authentication is through
    for type 1. Else HDCP enable will be failed.
    
    Pekka have completed the Weston DRM-backend review in
    https://gitlab.freedesktop.org/wayland/weston/merge_requests/48
    and the UAPI for HDCP 2.2 looks good.
    
    The userspace is accepted in Weston.
    
    v2:
      cp_content_type is replaced with content_protection_type [daniel]
      check at atomic_set_property is removed [Maarten]
    v3:
      %s/content_protection_type/hdcp_content_type [Pekka]
    v4:
      property is created for the first requested connector and then reused.
    	[Danvet]
    v5:
      kernel doc nits addressed [Daniel]
      Rebased as part of patch reordering.
    v6:
      Kernel docs are modified [pekka]
    v7:
      More details in Kernel docs. [pekka]
    v8:
      Few more clarification into kernel doc of content type [pekka]
    v9:
      Small fixes in coding style.
    v10:
      Moving DRM_MODE_HDCP_CONTENT_TYPEx definition to drm_hdcp.h [pekka]
    Signed-off-by: default avatarRamalingam C <ramalingam.c@intel.com>
    Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    Acked-by: default avatarPekka Paalanen <pekka.paalanen@collabora.com>
    Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
    Link: https://patchwork.freedesktop.org/patch/320957/?series=57232&rev=14
    7672dbba
drm_mode_config.h 30.9 KB