Create controls for Nuvoton NPCM video driver to support setting capture mode of Video Capture/Differentiation (VCD) engine and getting the count of HEXTILE rectangles that is compressed by Encoding Compression Engine (ECE).
Showing the changes to include/uapi (1 of 3 files). Show all
Unified · Split
| @@ -0,0 +1,41 @@ | ||
| 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 | + | |
| 29 | +enum 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 */ | |