diff options
Diffstat (limited to 'include/drm/drm_mode.h')
| -rw-r--r-- | include/drm/drm_mode.h | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index 7a7856e0..de44d0a9 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -514,7 +514,13 @@ struct drm_color_lut { #define DRM_MODE_PAGE_FLIP_EVENT 0x01 #define DRM_MODE_PAGE_FLIP_ASYNC 0x02 -#define DRM_MODE_PAGE_FLIP_FLAGS (DRM_MODE_PAGE_FLIP_EVENT|DRM_MODE_PAGE_FLIP_ASYNC) +#define DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE 0x4 +#define DRM_MODE_PAGE_FLIP_TARGET_RELATIVE 0x8 +#define DRM_MODE_PAGE_FLIP_TARGET (DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE | \ + DRM_MODE_PAGE_FLIP_TARGET_RELATIVE) +#define DRM_MODE_PAGE_FLIP_FLAGS (DRM_MODE_PAGE_FLIP_EVENT | \ + DRM_MODE_PAGE_FLIP_ASYNC | \ + DRM_MODE_PAGE_FLIP_TARGET) /* * Request a page flip on the specified crtc. @@ -537,15 +543,25 @@ struct drm_color_lut { * 'as soon as possible', meaning that it not delay waiting for vblank. * This may cause tearing on the screen. * - * The reserved field must be zero until we figure out something - * clever to use it for. + * The sequence field must be zero unless either of the + * DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags is specified. When + * the ABSOLUTE flag is specified, the sequence field denotes the absolute + * vblank sequence when the flip should take effect. When the RELATIVE + * flag is specified, the sequence field denotes the relative (to the + * current one when the ioctl is called) vblank sequence when the flip + * should take effect. NOTE: DRM_IOCTL_WAIT_VBLANK must still be used to + * make sure the vblank sequence before the target one has passed before + * calling this ioctl. The purpose of the + * DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags is merely to clarify + * the target for when code dealing with a page flip runs during a + * vertical blank period. */ struct drm_mode_crtc_page_flip { __u32 crtc_id; __u32 fb_id; __u32 flags; - __u32 reserved; + __u32 sequence; __u64 user_data; }; |