1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2/*
3 * Controls header for NPCM video driver
4 *
5 * Copyright (C) 2022 Nuvoton Technologies
6 */
7
8#ifndef _UAPI_LINUX_NPCM_VIDEO_H
9#define _UAPI_LINUX_NPCM_VIDEO_H
10
11#include <linux/v4l2-controls.h>
12
13/*
14 * Check Documentation/userspace-api/media/drivers/npcm-video.rst for control
15 * details.
16 */
17
18/*
19 * This control is meant to set the mode of NPCM Video Capture/Differentiation
20 * (VCD) engine.
21 *
22 * The VCD engine supports two modes:
23 * COMPLETE - Capture the next complete frame into memory.
24 * DIFF - Compare the incoming frame with the frame stored in memory, and
25 * updates the differentiated frame in memory.
26 */
27#define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_CID_USER_NPCM_BASE + 0)
28
29enum v4l2_npcm_capture_mode {
30 V4L2_NPCM_CAPTURE_MODE_COMPLETE = 0, /* COMPLETE mode */
31 V4L2_NPCM_CAPTURE_MODE_DIFF = 1, /* DIFF mode */
32};
33
34/*
35 * This control is meant to get the count of compressed HEXTILE rectangles which
36 * is relevant to the number of differentiated frames if VCD is in DIFF mode.
37 * And the count will always be 1 if VCD is in COMPLETE mode.
38 */
39#define V4L2_CID_NPCM_RECT_COUNT (V4L2_CID_USER_NPCM_BASE + 1)
40
41#endif /* _UAPI_LINUX_NPCM_VIDEO_H */
42

source code of linux/include/uapi/linux/npcm-video.h