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drm/mode: Add user blob-creation ioctl

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Add an ioctl which allows users to create blob properties from supplied
data. Currently this only supports modes, creating a drm_display_mode from
the userspace drm_mode_modeinfo.

v2: Removed size/type checks.
    Rebased on new patches to allow error propagation from create_blob,
    as well as avoiding double-allocation.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@intel.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Stone
2015-05-22 13:34:51 +01:00
committed by Daniel Vetter
parent 10e8cb7e79
commit e2f5d2ea47
7 changed files with 176 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/uapi/drm/drm.h
View File

@@ -786,6 +786,8 @@ 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

20
include/uapi/drm/drm_mode.h
View File

@@ -558,4 +558,24 @@ 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