It was there all along in the patch description when this change was introduced but it would be helpful to have the same documented in the code.
Signed-off-by: Harry Wentland <harry.wentl...@amd.com> Cc: Sean Paul <seanp...@chromium.org> Cc: Sean Paul <s...@poorly.run> Cc: Bhawanpreet Lakha <bhawanpreet.la...@amd.com> --- drivers/gpu/drm/drm_connector.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index b34c3d38bf15..c53e51ad3b59 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1519,6 +1519,15 @@ EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property); * Content Protection is intentionally vague to allow for different underlying * technologies, however it is most implemented by HDCP. * + * The property is a tri-state with the following values: + * - OFF: Self explanatory, no content protection + * - DESIRED: Userspace requests that the driver enable protection + * - ENABLED: Once the driver has authenticated the link, it sets this value + * + * The driver is responsible for downgrading ENABLED to DESIRED if the link becomes + * unprotected. The driver should also maintain the desiredness of protection + * across hotplug/dpms/suspend. + * * The content protection will be set to &drm_connector_state.content_protection * * Returns: -- 2.21.0 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
