Support atomic modesetting ioctl

Add support for the atomic modesetting ioctl through a property-set API.

v1: Squashed intermediate patches from Ville, Rob and myself. Updated
    for current kernel interface (no blobs).
v2: Rewrite user-facing API to provide transactional/cursor interface.
    Use memclear to zero out ioctl.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
Signed-off-by: Daniel Stone <daniels@collabora.com>

v3 [Emil Velikov]: Remove DRM_CAP_ATOMIC - superseded by
DRM_CLIENT_CAP_ATOMIC.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/xf86drmMode.h b/xf86drmMode.h
index 20c3f153..317ea234 100644
--- a/xf86drmMode.h
+++ b/xf86drmMode.h
@@ -484,6 +484,25 @@ extern int drmModeObjectSetProperty(int fd, uint32_t object_id,
                                     uint32_t object_type, uint32_t property_id,
                                     uint64_t value);
 
+
+typedef struct _drmModeAtomicReq drmModeAtomicReq, *drmModeAtomicReqPtr;
+
+extern drmModeAtomicReqPtr drmModeAtomicAlloc(void);
+extern drmModeAtomicReqPtr drmModeAtomicDuplicate(drmModeAtomicReqPtr req);
+extern int drmModeAtomicMerge(drmModeAtomicReqPtr base,
+                              drmModeAtomicReqPtr augment);
+extern void drmModeAtomicFree(drmModeAtomicReqPtr req);
+extern int drmModeAtomicGetCursor(drmModeAtomicReqPtr req);
+extern void drmModeAtomicSetCursor(drmModeAtomicReqPtr req, int cursor);
+extern int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
+                                    uint32_t object_id,
+                                    uint32_t property_id,
+                                    uint64_t value);
+extern int drmModeAtomicCommit(int fd,
+                               drmModeAtomicReqPtr req,
+                               uint32_t flags,
+                               void *user_data);
+
 #if defined(__cplusplus) || defined(c_plusplus)
 }
 #endif