v2: Use memclear to zero out structure.
Signed-off-by: Daniel Stone daniels@collabora.com --- include/drm/drm.h | 2 ++ include/drm/drm_mode.h | 21 +++++++++++++++++++++ xf86drmMode.c | 34 ++++++++++++++++++++++++++++++++++ xf86drmMode.h | 5 +++++ 4 files changed, 62 insertions(+)
diff --git a/include/drm/drm.h b/include/drm/drm.h index 0b1d2ef..15d4454 100644 --- a/include/drm/drm.h +++ b/include/drm/drm.h @@ -766,6 +766,8 @@ struct drm_prime_handle { #define DRM_IOCTL_MODE_OBJ_SETPROPERTY DRM_IOWR(0xBA, struct drm_mode_obj_set_property) #define DRM_IOCTL_MODE_CURSOR2 DRM_IOWR(0xBB, struct drm_mode_cursor2) #define DRM_IOCTL_MODE_ATOMIC DRM_IOWR(0xBC, struct drm_mode_atomic) +#define DRM_IOCTL_MODE_CREATEPROPBLOB DRM_IOWR(0xBD, struct drm_mode_create_blob) +#define DRM_IOCTL_MODE_DESTROYPROPBLOB DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
/** * Device specific ioctls should only be in their respective headers diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h index 66f856f..69c1ac3 100644 --- a/include/drm/drm_mode.h +++ b/include/drm/drm_mode.h @@ -523,4 +523,25 @@ struct drm_mode_atomic { __u64 user_data; };
+/** + * Create a new 'blob' data property, copying length bytes from data pointer, + * and returning new blob ID. + */ +struct drm_mode_create_blob { + /** Pointer to data to copy. */ + __u64 data; + /** Length of data to copy. */ + __u32 length; + /** Return: new property ID. */ + __u32 blob_id; +}; + +/** + * Destroy a user-created blob property. + */ +struct drm_mode_destroy_blob { + __u32 blob_id; +}; + + #endif diff --git a/xf86drmMode.c b/xf86drmMode.c index a75eca3..73c8695 100644 --- a/xf86drmMode.c +++ b/xf86drmMode.c @@ -1387,3 +1387,37 @@ out:
return ret; } + +int +drmModeCreatePropertyBlob(int fd, const void *data, size_t length, uint32_t *id) +{ + struct drm_mode_create_blob create; + int ret; + + if (length >= 0xffffffff) + return -ERANGE; + + memclear(create); + + create.length = length; + create.data = (uintptr_t) data; + create.blob_id = 0; + *id = 0; + + ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATEPROPBLOB, &create); + if (ret != 0) + return ret; + + *id = create.blob_id; + return 0; +} + +int +drmModeDestroyPropertyBlob(int fd, uint32_t id) +{ + struct drm_mode_destroy_blob destroy; + + memclear(destroy); + destroy.blob_id = id; + return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy); +} diff --git a/xf86drmMode.h b/xf86drmMode.h index 317ea23..1c10023 100644 --- a/xf86drmMode.h +++ b/xf86drmMode.h @@ -503,6 +503,11 @@ extern int drmModeAtomicCommit(int fd, uint32_t flags, void *user_data);
+extern int drmModeCreatePropertyBlob(int fd, const void *data, size_t size, + uint32_t *id); +extern int drmModeDestroyPropertyBlob(int fd, uint32_t id); + + #if defined(__cplusplus) || defined(c_plusplus) } #endif