ch7005c.h

CH7005C LINUX 驱动源码 CH7005C LINUX 驱动源码

#ifndef __CH7005C_H
#define __CH7005C_H

#include <linux/video_encoder.h>

/* Should go to video_encoder.h */
#define VIDEO_ENCODER_PAL_M	32	/* can encode PAL-M */
#define VIDEO_ENCODER_NTSC_J	64	/* can encode NTSC-J */

/* Description of the hardware environment */
struct ch7005c_config {
	int clock_mode;
#define CH7005C_SLAVE_CLK_MODE	0
#define CH7005C_MASTER_CLK_MODE	1
	int xcm, pcm;
#define CH7005C_CLK_1X		0
#define CH7005C_CLK_2X		1
#define CH7005C_CLK_3X		2
	int mcp;
#define CH7005C_MCP_NEG_EDGE	0
#define CH7005C_MCP_POS_EDGE	1
	int input_fmt;
#define CH7005C_16_RGB_16	0
#define CH7005C_16_YCRCB_24	1
#define CH7005C_16_RGB_MPX_24	2
#define CH7005C_15_RGB_15	3
#define CH7005C_12_RGB_MPX_C_24	4
#define CH7005C_12_RGB_MPX_I_24	5
#define CH7005C_8_RGB_MPX_24	6
#define CH7005C_8_RGB_MPX_16	7
#define CH7005C_8_RGB_MPX_15	8
#define CH7005C_8_YCRCB_MPX_24	9
	int rgb_bypass;
#define CH7005C_RGBBP_DISABLE	0
#define CH7005C_RGBBP_ENABLE	1
	int horiz_sync_pol, vert_sync_pol;
#define CH7005C_SYNC_ACT_LO	0
#define CH7005C_SYNC_ACT_HI	1
	int sync_direction;
#define CH7005C_SYNC_INPUT	0
#define CH7005C_SYNC_OUTPUT	1
	int des;
#define CH7005C_DES_ENABLE	1
#define CH7005C_DES_DISABLE	0
};

/* For setting the flicker filter. */
struct ch7005c_filter {
	int text_enhancement;
	int luma;
	int chroma;
#define CH7005C_FILTER_MIN	0
#define CH7005C_FILTER_SLIGHT	1
#define CH7005C_FILTER_MAX	2
#define CH7005C_DOTCRAWL_RED	3
};

/* For setting the position of the displayed image. */
struct ch7005c_pos {
	unsigned start_active_video;
	unsigned horiz_pos;
	unsigned vert_pos;
};

/*
 * Encoder commands
 */

/*
 * This command tells the necessary hardware layout information to the driver.
 * It should  be the first command to the driver.
 * USE IT WITH CAUTION!
 */
#define ENCODER_SET_CONFIG		_IOW('e', 6, struct ch7005c_config*)

/*
 * Use this command to set the display mode. See the Chrontel docs for
 * explanation.
 * 0 <= mode <= 28
 */
#define	ENCODER_SET_DISP_MODE		_IOW('e', 7, int*)

/*
 * Set various image enhancement filters.
 */
#define ENCODER_SET_FLICKER_FILTER	_IOW('e', 8, struct ch7005c_filter*)

/*
 * Set the position of the displayed image.
 * 0 <= position values <= 511
 */
#define ENCODER_SET_POS			_IOW('e', 9, struct ch7005c_pos*)

/*
 * Contrast adjustment.
 * 0 <= contrast <= 7
 */
#define ENCODER_SET_CONTRAST		_IOW('e', 10, int*)

/*
 * Use this call to detect the connected outputs.
 * Returns: CH7005C_YT_VALID | CH7005C_CT_VALID | CH7005C_CVBST_VALID
 */
#define ENCODER_DETECT_CONNECTIONS	_IOR('e', 11, int*)
#define CH7005C_YT_VALID	8	/* S-Video Y output is connected */
#define CH7005C_CT_VALID	4	/* S-Video C output is connected */
#define CH7005C_CVBST_VALID	2	/* Composite video output is connected */

#endif /* __CH7005C_H */