include/uapi/linux/v4l2-dv-timings.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/v4l2-dv-timings.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/v4l2-dv-timings.h
Extension
.h
Size
31120 bytes
Lines
971
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _V4L2_DV_TIMINGS_H
#define _V4L2_DV_TIMINGS_H

#if __GNUC__ < 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ < 6))
/* Sadly gcc versions older than 4.6 have a bug in how they initialize
   anonymous unions where they require additional curly brackets.
   This violates the C1x standard. This workaround adds the curly brackets
   if needed. */
#define V4L2_INIT_BT_TIMINGS(_width, args...) \
	{ .bt = { _width , ## args } }
#else
#define V4L2_INIT_BT_TIMINGS(_width, args...) \
	.bt = { _width , ## args }
#endif

/* CEA-861-F timings (i.e. standard HDTV timings) */

#define V4L2_DV_BT_CEA_640X480P59_94 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(640, 480, 0, 0, \
		25175000, 16, 96, 48, 10, 2, 33, 0, 0, 0, \
		V4L2_DV_BT_STD_DMT | V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_HAS_CEA861_VIC, { 0, 0 }, 1) \
}

/* Note: these are the nominal timings, for HDMI links this format is typically
 * double-clocked to meet the minimum pixelclock requirements.  */
#define V4L2_DV_BT_CEA_720X480I59_94 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(720, 480, 1, 0, \
		13500000, 19, 62, 57, 4, 3, 15, 4, 3, 16, \
		V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_HALF_LINE | V4L2_DV_FL_IS_CE_VIDEO | \
		V4L2_DV_FL_HAS_PICTURE_ASPECT | V4L2_DV_FL_HAS_CEA861_VIC, \
		{ 4, 3 }, 6) \
}

#define V4L2_DV_BT_CEA_720X480P59_94 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(720, 480, 0, 0, \
		27000000, 16, 62, 60, 9, 6, 30, 0, 0, 0, \
		V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_IS_CE_VIDEO | V4L2_DV_FL_HAS_PICTURE_ASPECT | \
		V4L2_DV_FL_HAS_CEA861_VIC, { 4, 3 }, 2) \
}

/* Note: these are the nominal timings, for HDMI links this format is typically
 * double-clocked to meet the minimum pixelclock requirements.  */
#define V4L2_DV_BT_CEA_720X576I50 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(720, 576, 1, 0, \
		13500000, 12, 63, 69, 2, 3, 19, 2, 3, 20, \
		V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_HALF_LINE | V4L2_DV_FL_IS_CE_VIDEO | \
		V4L2_DV_FL_HAS_PICTURE_ASPECT | V4L2_DV_FL_HAS_CEA861_VIC, \
		{ 4, 3 }, 21) \
}

#define V4L2_DV_BT_CEA_720X576P50 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(720, 576, 0, 0, \
		27000000, 12, 64, 68, 5, 5, 39, 0, 0, 0, \
		V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_IS_CE_VIDEO | V4L2_DV_FL_HAS_PICTURE_ASPECT | \
		V4L2_DV_FL_HAS_CEA861_VIC, { 4, 3 }, 17) \
}

#define V4L2_DV_BT_CEA_1280X720P24 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(1280, 720, 0, \
		V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
		59400000, 1760, 40, 220, 5, 5, 20, 0, 0, 0, \
		V4L2_DV_BT_STD_DMT | V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_CAN_REDUCE_FPS | V4L2_DV_FL_HAS_CEA861_VIC, { 0, 0 }, 60) \
}

#define V4L2_DV_BT_CEA_1280X720P25 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(1280, 720, 0, \
		V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
		74250000, 2420, 40, 220, 5, 5, 20, 0, 0, 0, \
		V4L2_DV_BT_STD_CEA861, \
		V4L2_DV_FL_IS_CE_VIDEO | V4L2_DV_FL_HAS_CEA861_VIC, { 0, 0 }, 61) \
}

#define V4L2_DV_BT_CEA_1280X720P30 { \
	.type = V4L2_DV_BT_656_1120, \
	V4L2_INIT_BT_TIMINGS(1280, 720, 0, \
		V4L2_DV_HSYNC_POS_POL | V4L2_DV_VSYNC_POS_POL, \
		74250000, 1760, 40, 220, 5, 5, 20, 0, 0, 0, \

Annotation

Implementation Notes