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authorDave Airlie <airlied@redhat.com>2023-01-16 15:33:22 +1000
committerDave Airlie <airlied@redhat.com>2023-01-16 15:33:28 +1000
commitc37ea39c1fa880da0d7fd2c719e5c96be19f0fc5 (patch)
tree1d4bd8a5ab631cd54ebb326fc39160a2be84e969 /include/uapi
parent1f1c24dee225fc82472627986997ba6aef309fc2 (diff)
parent6e41acd2e5353c5362e0d5c2f5ba495c54ff555e (diff)
Merge tag 'drm-misc-next-2023-01-12' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v6.3: UAPI Changes: * fourcc: Document Open Source user waiver Cross-subsystem Changes: * firmware: fix color-format selection for system framebuffers Core Changes: * format-helper: Add conversion from XRGB8888 to various sysfb formats; Make XRGB8888 the only driver-emulated legacy format * fb-helper: Avoid blank consoles from selecting an incorrect color format * probe-helper: Enable/disable HPD on connectors plus driver updates * Use drm_dbg_ helpers in several places * docs: Document defaults for CRTC backgrounds; Document use of drm_minor Driver Changes: * arm/hdlcd: Use new debugfs helpers * gud: Use new debugfs helpers * panel: Support Visionox VTDR6130 AMOLED DSI; Support Himax HX8394; Convert many drivers to common generic DSI write-sequence helper * v3d: Do not opencode drm_gem_object_lookup() * vc4: Various HVS an CRTC fixes * vkms: Fix SEGFAULT from incorrect GEM-buffer mapping * Convert various drivers to i2c probe_new() Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/Y8ADeSzZDj+tpibF@linux-uq9g
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/drm/drm_fourcc.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index bc056f2d537d..de703c6be969 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -88,6 +88,18 @@ extern "C" {
*
* The authoritative list of format modifier codes is found in
* `include/uapi/drm/drm_fourcc.h`
+ *
+ * Open Source User Waiver
+ * -----------------------
+ *
+ * Because this is the authoritative source for pixel formats and modifiers
+ * referenced by GL, Vulkan extensions and other standards and hence used both
+ * by open source and closed source driver stacks, the usual requirement for an
+ * upstream in-kernel or open source userspace user does not apply.
+ *
+ * To ensure, as much as feasible, compatibility across stacks and avoid
+ * confusion with incompatible enumerations stakeholders for all relevant driver
+ * stacks should approve additions.
*/
#define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \