On Mon, Jul 24, 2017 at 2:12 PM, Ramalingam C <ramalingam.c@xxxxxxxxx> wrote:
> DRM connector property is created to represent the content protection
> state of the connector and to configure the same.
>
> Content protection states defined:
> DRM_MODE_CONTENT_PROTECTION_UNSUPPORTED - Unsupported
> DRM_MODE_CONTENT_PROTECTION_DISABLE - Disabled
> DRM_MODE_CONTENT_PROTECTION_ENABLE - Enabled
>
> v2: Redesigned the property to match with CP needs of CrOS [Sean].
>
> v3: Renamed the state names. Header is removed [sean].
>
> Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
> ---
> drivers/gpu/drm/drm_connector.c | 14 ++++++++++++++
> include/drm/drm_mode_config.h | 5 +++++
> include/uapi/drm/drm_mode.h | 5 +++++
> 3 files changed, 24 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 5cd61af..d6aaa08 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -617,6 +617,13 @@ static const struct drm_prop_enum_list drm_link_status_enum_list[] = {
> };
> DRM_ENUM_NAME_FN(drm_get_link_status_name, drm_link_status_enum_list)
>
> +static const struct drm_prop_enum_list drm_cp_enum_list[] = {
> + { DRM_MODE_CONTENT_PROTECTION_UNSUPPORTED, "Unsupported" },
You're still changing the enum names from the original patch/CrOS
implementation.
https://lists.freedesktop.org/archives/dri-devel/2014-December/073336.html
https://cs.chromium.org/chromium/src/ui/ozone/platform/drm/gpu/drm_display.cc?l=27
> + { DRM_MODE_CONTENT_PROTECTION_DISABLE, "Disabled" },
> + { DRM_MODE_CONTENT_PROTECTION_ENABLE, "Enabled" },
> +};
> +DRM_ENUM_NAME_FN(drm_get_cp_status_name, drm_cp_enum_list)
> +
> /**
> * drm_display_info_set_bus_formats - set the supported bus formats
> * @info: display info to store bus formats in
> @@ -789,6 +796,13 @@ int drm_connector_create_standard_properties(struct drm_device *dev)
> return -ENOMEM;
> dev->mode_config.link_status_property = prop;
>
> + prop = drm_property_create_enum(dev, 0, "Content Protection",
> + drm_cp_enum_list,
> + ARRAY_SIZE(drm_cp_enum_list));
> + if (!prop)
> + return -ENOMEM;
> + dev->mode_config.cp_property = prop;
> +
> return 0;
> }
>
> diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
> index 4298171..7acb8b2 100644
> --- a/include/drm/drm_mode_config.h
> +++ b/include/drm/drm_mode_config.h
> @@ -538,6 +538,11 @@ struct drm_mode_config {
> */
> struct drm_property *link_status_property;
> /**
> + * @cp_property: Default connector property for CP
> + * of a connector
Can you please elaborate on this, so readers can understand how this
property works? Perhaps just copy the docs from the original patch?
> + */
> + struct drm_property *cp_property;
> + /**
> * @plane_type_property: Default plane property to differentiate
> * CURSOR, PRIMARY and OVERLAY legacy uses of planes.
> */
> diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
> index 403339f..554a770 100644
> --- a/include/uapi/drm/drm_mode.h
> +++ b/include/uapi/drm/drm_mode.h
> @@ -127,6 +127,11 @@ extern "C" {
> #define DRM_MODE_LINK_STATUS_GOOD 0
> #define DRM_MODE_LINK_STATUS_BAD 1
>
> +/* Content Protection options */
> +#define DRM_MODE_CONTENT_PROTECTION_UNSUPPORTED 0
> +#define DRM_MODE_CONTENT_PROTECTION_DISABLE 1
> +#define DRM_MODE_CONTENT_PROTECTION_ENABLE 2
> +
> /*
> * DRM_MODE_ROTATE_<degrees>
> *
> --
> 2.7.4
>
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