diff options
Diffstat (limited to 'drivers/gpu/drm/drm_connector.c')
| -rw-r--r-- | drivers/gpu/drm/drm_connector.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 16b9c3810af2..b3cde897cd80 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -849,13 +849,13 @@ DRM_ENUM_NAME_FN(drm_get_content_protection_name, drm_cp_enum_list) * * The value of this property can be one of the following: * - * - DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 + * DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0 * The link is not protected, content is transmitted in the clear. - * - DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 + * DRM_MODE_CONTENT_PROTECTION_DESIRED = 1 * Userspace has requested content protection, but the link is not * currently protected. When in this state, kernel should enable * Content Protection as soon as possible. - * - DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 + * DRM_MODE_CONTENT_PROTECTION_ENABLED = 2 * Userspace has requested content protection, and the link is * protected. Only the driver can set the property to this value. * If userspace attempts to set to ENABLED, kernel will return @@ -889,7 +889,31 @@ DRM_ENUM_NAME_FN(drm_get_content_protection_name, drm_cp_enum_list) * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel * coordinates, so if userspace rotates the picture to adjust for * the orientation it must also apply the same transformation to the - * touchscreen input coordinates. + * touchscreen input coordinates. This property is initialized by calling + * drm_connector_init_panel_orientation_property(). + * + * scaling mode: + * This property defines how a non-native mode is upscaled to the native + * mode of an LCD panel: + * + * None: + * No upscaling happens, scaling is left to the panel. Not all + * drivers expose this mode. + * Full: + * The output is upscaled to the full resolution of the panel, + * ignoring the aspect ratio. + * Center: + * No upscaling happens, the output is centered within the native + * resolution the panel. + * Full aspect: + * The output is upscaled to maximize either the width or height + * while retaining the aspect ratio. + * + * This property should be set up by calling + * drm_connector_attach_scaling_mode_property(). Note that drivers + * can also expose this property to external outputs, in which case they + * must support "None", which should be the default (since external screens + * have a built-in scaler). */ int drm_connector_create_standard_properties(struct drm_device *dev) |