include/linux/fsl-diu-fb.h

Source file repositories/reference/linux-study-clean/include/linux/fsl-diu-fb.h

File Facts

System
Linux kernel
Corpus path
include/linux/fsl-diu-fb.h
Extension
.h
Size
3963 bytes
Lines
169
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

struct mfb_chroma_key {
	int enable;
	__u8  red_max;
	__u8  green_max;
	__u8  blue_max;
	__u8  red_min;
	__u8  green_min;
	__u8  blue_min;
};

struct aoi_display_offset {
	__s32 x_aoi_d;
	__s32 y_aoi_d;
};

#define MFB_SET_CHROMA_KEY	_IOW('M', 1, struct mfb_chroma_key)
#define MFB_SET_BRIGHTNESS	_IOW('M', 3, __u8)
#define MFB_SET_ALPHA		_IOW('M', 0, __u8)
#define MFB_GET_ALPHA		_IOR('M', 0, __u8)
#define MFB_SET_AOID		_IOW('M', 4, struct aoi_display_offset)
#define MFB_GET_AOID		_IOR('M', 4, struct aoi_display_offset)
#define MFB_SET_PIXFMT		_IOW('M', 8, __u32)
#define MFB_GET_PIXFMT		_IOR('M', 8, __u32)

/*
 * The MPC5121 BSP comes with a gamma_set utility that initializes the
 * gamma table.  Unfortunately, it uses bad values for the IOCTL commands,
 * but there's nothing we can do about it now.  These ioctls are only
 * supported on the MPC5121.
 */
#define MFB_SET_GAMMA		_IOW('M', 1, __u8)
#define MFB_GET_GAMMA		_IOR('M', 1, __u8)

/*
 * The original definitions of MFB_SET_PIXFMT and MFB_GET_PIXFMT used the
 * wrong value for 'size' field of the ioctl.  The current macros above use the
 * right size, but we still need to provide backwards compatibility, at least
 * for a while.
*/
#define MFB_SET_PIXFMT_OLD	0x80014d08
#define MFB_GET_PIXFMT_OLD	0x40014d08

#ifdef __KERNEL__

/*
 * These are the fields of area descriptor(in DDR memory) for every plane
 */
struct diu_ad {
	/* Word 0(32-bit) in DDR memory */
/* 	__u16 comp; */
/* 	__u16 pixel_s:2; */
/* 	__u16 palette:1; */
/* 	__u16 red_c:2; */
/* 	__u16 green_c:2; */
/* 	__u16 blue_c:2; */
/* 	__u16 alpha_c:3; */
/* 	__u16 byte_f:1; */
/* 	__u16 res0:3; */

	__be32 pix_fmt; /* hard coding pixel format */

	/* Word 1(32-bit) in DDR memory */
	__le32 addr;

	/* Word 2(32-bit) in DDR memory */
/* 	__u32 delta_xs:11; */
/* 	__u32 res1:1; */
/* 	__u32 delta_ys:11; */
/* 	__u32 res2:1; */
/* 	__u32 g_alpha:8; */
	__le32 src_size_g_alpha;

	/* Word 3(32-bit) in DDR memory */
/* 	__u32 delta_xi:11; */
/* 	__u32 res3:5; */
/* 	__u32 delta_yi:11; */
/* 	__u32 res4:3; */
/* 	__u32 flip:2; */
	__le32 aoi_size;

	/* Word 4(32-bit) in DDR memory */
	/*__u32 offset_xi:11;
	__u32 res5:5;
	__u32 offset_yi:11;
	__u32 res6:5;
	*/
	__le32 offset_xyi;

	/* Word 5(32-bit) in DDR memory */
	/*__u32 offset_xd:11;

Annotation

Implementation Notes