diff options
Diffstat (limited to 'include/drm/drm_mode_config.h')
| -rw-r--r-- | include/drm/drm_mode_config.h | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 48b7de80daf5..6b5e01295348 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -359,6 +359,19 @@ struct drm_mode_config_funcs { * Core mode resource tracking structure. All CRTC, encoders, and connectors * enumerated by the driver are added here, as are global properties. Some * global restrictions are also here, e.g. dimension restrictions. + * + * Framebuffer sizes refer to the virtual screen that can be displayed by + * the CRTC. This can be different from the physical resolution programmed. + * The minimum width and height, stored in @min_width and @min_height, + * describe the smallest size of the framebuffer. It correlates to the + * minimum programmable resolution. + * The maximum width, stored in @max_width, is typically limited by the + * maximum pitch between two adjacent scanlines. The maximum height, stored + * in @max_height, is usually only limited by the amount of addressable video + * memory. For hardware that has no real maximum, drivers should pick a + * reasonable default. + * + * See also @DRM_SHADOW_PLANE_MAX_WIDTH and @DRM_SHADOW_PLANE_MAX_HEIGHT. */ struct drm_mode_config { /** @@ -905,20 +918,14 @@ struct drm_mode_config { bool async_page_flip; /** - * @allow_fb_modifiers: - * - * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call. - * Note that drivers should not set this directly, it is automatically - * set in drm_universal_plane_init(). - * - * IMPORTANT: + * @fb_modifiers_not_supported: * - * If this is set the driver must fill out the full implicit modifier - * information in their &drm_mode_config_funcs.fb_create hook for legacy - * userspace which does not set modifiers. Otherwise the GETFB2 ioctl is - * broken for modifier aware userspace. + * When this flag is set, the DRM device will not expose modifier + * support to userspace. This is only used by legacy drivers that infer + * the buffer layout through heuristics without using modifiers. New + * drivers shall not set fhis flag. */ - bool allow_fb_modifiers; + bool fb_modifiers_not_supported; /** * @normalize_zpos: |