1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linu 1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /* 2 /*
3 * Controls header for NPCM video driver 3 * Controls header for NPCM video driver
4 * 4 *
5 * Copyright (C) 2022 Nuvoton Technologies 5 * Copyright (C) 2022 Nuvoton Technologies
6 */ 6 */
7 7
8 #ifndef _UAPI_LINUX_NPCM_VIDEO_H 8 #ifndef _UAPI_LINUX_NPCM_VIDEO_H
9 #define _UAPI_LINUX_NPCM_VIDEO_H 9 #define _UAPI_LINUX_NPCM_VIDEO_H
10 10
11 #include <linux/v4l2-controls.h> 11 #include <linux/v4l2-controls.h>
12 12
13 /* 13 /*
14 * Check Documentation/userspace-api/media/dri 14 * Check Documentation/userspace-api/media/drivers/npcm-video.rst for control
15 * details. 15 * details.
16 */ 16 */
17 17
18 /* 18 /*
19 * This control is meant to set the mode of NP 19 * This control is meant to set the mode of NPCM Video Capture/Differentiation
20 * (VCD) engine. 20 * (VCD) engine.
21 * 21 *
22 * The VCD engine supports two modes: 22 * The VCD engine supports two modes:
23 * COMPLETE - Capture the next complete frame 23 * COMPLETE - Capture the next complete frame into memory.
24 * DIFF - Compare the incoming frame with 24 * DIFF - Compare the incoming frame with the frame stored in memory, and
25 * updates the differentiated frame 25 * updates the differentiated frame in memory.
26 */ 26 */
27 #define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_ 27 #define V4L2_CID_NPCM_CAPTURE_MODE (V4L2_CID_USER_NPCM_BASE + 0)
28 28
29 enum v4l2_npcm_capture_mode { 29 enum v4l2_npcm_capture_mode {
30 V4L2_NPCM_CAPTURE_MODE_COMPLETE = 0, / 30 V4L2_NPCM_CAPTURE_MODE_COMPLETE = 0, /* COMPLETE mode */
31 V4L2_NPCM_CAPTURE_MODE_DIFF = 1, / 31 V4L2_NPCM_CAPTURE_MODE_DIFF = 1, /* DIFF mode */
32 }; 32 };
33 33
34 /* 34 /*
35 * This control is meant to get the count of c 35 * This control is meant to get the count of compressed HEXTILE rectangles which
36 * is relevant to the number of differentiated 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 37 * And the count will always be 1 if VCD is in COMPLETE mode.
38 */ 38 */
39 #define V4L2_CID_NPCM_RECT_COUNT (V4L2_ 39 #define V4L2_CID_NPCM_RECT_COUNT (V4L2_CID_USER_NPCM_BASE + 1)
40 40
41 #endif /* _UAPI_LINUX_NPCM_VIDEO_H */ 41 #endif /* _UAPI_LINUX_NPCM_VIDEO_H */
42 42
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