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Diffstat (limited to 'include/uapi/drm/drm_mode.h')
-rw-r--r--include/uapi/drm/drm_mode.h16
1 files changed, 9 insertions, 7 deletions
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 084b50a02dc5..ebf622f5b238 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -47,7 +47,15 @@ extern "C" {
#define DRM_MODE_TYPE_DRIVER (1<<6)
/* Video mode flags */
-/* bit compatible with the xorg definitions. */
+/* bit compatible with the xrandr RR_ definitions (bits 0-13)
+ *
+ * ABI warning: Existing userspace really expects
+ * the mode flags to match the xrandr definitions. Any
+ * changes that don't match the xrandr definitions will
+ * likely need a new client cap or some other mechanism
+ * to avoid breaking existing userspace. This includes
+ * allocating new flags in the previously unused bits!
+ */
#define DRM_MODE_FLAG_PHSYNC (1<<0)
#define DRM_MODE_FLAG_NHSYNC (1<<1)
#define DRM_MODE_FLAG_PVSYNC (1<<2)
@@ -81,8 +89,6 @@ extern "C" {
#define DRM_MODE_PICTURE_ASPECT_NONE 0
#define DRM_MODE_PICTURE_ASPECT_4_3 1
#define DRM_MODE_PICTURE_ASPECT_16_9 2
-#define DRM_MODE_PICTURE_ASPECT_64_27 3
-#define DRM_MODE_PICTURE_ASPECT_256_135 4
/* Aspect ratio flag bitmask (4 bits 22:19) */
#define DRM_MODE_FLAG_PIC_AR_MASK (0x0F<<19)
@@ -92,10 +98,6 @@ extern "C" {
(DRM_MODE_PICTURE_ASPECT_4_3<<19)
#define DRM_MODE_FLAG_PIC_AR_16_9 \
(DRM_MODE_PICTURE_ASPECT_16_9<<19)
-#define DRM_MODE_FLAG_PIC_AR_64_27 \
- (DRM_MODE_PICTURE_ASPECT_64_27<<19)
-#define DRM_MODE_FLAG_PIC_AR_256_135 \
- (DRM_MODE_PICTURE_ASPECT_256_135<<19)
/* DPMS flags */
/* bit compatible with the xorg definitions. */