[people/ms/u-boot.git] / include / edid.h

/*
 * Copyright (c) 2012 The Chromium OS Authors.
 *
 * (C) Copyright 2010
 * Petr Stetiar <ynezz@true.cz>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 * Contains stolen code from ddcprobe project which is:
 * Copyright (C) Nalin Dahyabhai <bigfun@pobox.com>
 */

#ifndef __EDID_H_
#define __EDID_H_

#include <linux/types.h>

/* Size of the EDID data */
#define EDID_SIZE	128
#define EDID_EXT_SIZE	256

#define GET_BIT(_x, _pos) \
	(((_x) >> (_pos)) & 1)
#define GET_BITS(_x, _pos_msb, _pos_lsb) \
	(((_x) >> (_pos_lsb)) & ((1 << ((_pos_msb) - (_pos_lsb) + 1)) - 1))

/* Aspect ratios used in EDID info. */
enum edid_aspect {
	ASPECT_625 = 0,
	ASPECT_75,
	ASPECT_8,
	ASPECT_5625,
};

/* Detailed timing information used in EDID v1.x */
struct edid_detailed_timing {
	unsigned char pixel_clock[2];
#define EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \
	(((((uint32_t)(_x).pixel_clock[1]) << 8) + \
	 (_x).pixel_clock[0]) * 10000)
	unsigned char horizontal_active;
	unsigned char horizontal_blanking;
	unsigned char horizontal_active_blanking_hi;
#define EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \
	((GET_BITS((_x).horizontal_active_blanking_hi, 7, 4) << 8) + \
	 (_x).horizontal_active)
#define EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \
	((GET_BITS((_x).horizontal_active_blanking_hi, 3, 0) << 8) + \
	 (_x).horizontal_blanking)
	unsigned char vertical_active;
	unsigned char vertical_blanking;
	unsigned char vertical_active_blanking_hi;
#define EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \
	((GET_BITS((_x).vertical_active_blanking_hi, 7, 4) << 8) + \
	 (_x).vertical_active)
#define EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \
	((GET_BITS((_x).vertical_active_blanking_hi, 3, 0) << 8) + \
	 (_x).vertical_blanking)
	unsigned char hsync_offset;
	unsigned char hsync_pulse_width;
	unsigned char vsync_offset_pulse_width;
	unsigned char hsync_vsync_offset_pulse_width_hi;
#define EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 7, 6) << 8) + \
	 (_x).hsync_offset)
#define EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 5, 4) << 8) + \
	 (_x).hsync_pulse_width)
#define EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 3, 2) << 4) + \
	 GET_BITS((_x).vsync_offset_pulse_width, 7, 4))
#define EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 1, 0) << 4) + \
	 GET_BITS((_x).vsync_offset_pulse_width, 3, 0))
	unsigned char himage_size;
	unsigned char vimage_size;
	unsigned char himage_vimage_size_hi;
#define EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \
	((GET_BITS((_x).himage_vimage_size_hi, 7, 4) << 8) + (_x).himage_size)
#define EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \
	((GET_BITS((_x).himage_vimage_size_hi, 3, 0) << 8) + (_x).vimage_size)
	unsigned char hborder;
	unsigned char vborder;
	unsigned char flags;
#define EDID_DETAILED_TIMING_FLAG_INTERLACED(_x) \
	GET_BIT((_x).flags, 7)
#define EDID_DETAILED_TIMING_FLAG_STEREO(_x) \
	GET_BITS((_x).flags, 6, 5)
#define EDID_DETAILED_TIMING_FLAG_DIGITAL_COMPOSITE(_x) \
	GET_BITS((_x).flags, 4, 3)
#define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \
	GET_BITS((_x).flags, 2, 1)
#define EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(_x) \
	GET_BIT((_x).flags, 2)
#define EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(_x) \
	GET_BIT((_x).flags, 1)
#define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \
	GET_BIT((_x).flags, 0)
} __attribute__ ((__packed__));

enum edid_monitor_descriptor_types {
	EDID_MONITOR_DESCRIPTOR_SERIAL = 0xff,
	EDID_MONITOR_DESCRIPTOR_ASCII = 0xfe,
	EDID_MONITOR_DESCRIPTOR_RANGE = 0xfd,
	EDID_MONITOR_DESCRIPTOR_NAME = 0xfc,
};

struct edid_monitor_descriptor {
	uint16_t zero_flag_1;
	unsigned char zero_flag_2;
	unsigned char type;
	unsigned char zero_flag_3;
	union {
		char string[13];
		struct {
			unsigned char vertical_min;
			unsigned char vertical_max;
			unsigned char horizontal_min;
			unsigned char horizontal_max;
			unsigned char pixel_clock_max;
			unsigned char gtf_data[8];
		} range_data;
	} data;
} __attribute__ ((__packed__));

struct edid1_info {
	unsigned char header[8];
	unsigned char manufacturer_name[2];
#define EDID1_INFO_MANUFACTURER_NAME_ZERO(_x) \
	GET_BIT(((_x).manufacturer_name[0]), 7)
#define EDID1_INFO_MANUFACTURER_NAME_CHAR1(_x) \
	GET_BITS(((_x).manufacturer_name[0]), 6, 2)
#define EDID1_INFO_MANUFACTURER_NAME_CHAR2(_x) \
	((GET_BITS(((_x).manufacturer_name[0]), 1, 0) << 3) + \
	 GET_BITS(((_x).manufacturer_name[1]), 7, 5))
#define EDID1_INFO_MANUFACTURER_NAME_CHAR3(_x) \
	GET_BITS(((_x).manufacturer_name[1]), 4, 0)
	unsigned char product_code[2];
#define EDID1_INFO_PRODUCT_CODE(_x) \
	(((uint16_t)(_x).product_code[1] << 8) + (_x).product_code[0])
	unsigned char serial_number[4];
#define EDID1_INFO_SERIAL_NUMBER(_x) \
	(((uint32_t)(_x).serial_number[3] << 24) + \
	 ((_x).serial_number[2] << 16) + ((_x).serial_number[1] << 8) + \
	 (_x).serial_number[0])
	unsigned char week;
	unsigned char year;
	unsigned char version;
	unsigned char revision;
	unsigned char video_input_definition;
#define EDID1_INFO_VIDEO_INPUT_DIGITAL(_x) \
	GET_BIT(((_x).video_input_definition), 7)
#define EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(_x) \
	GET_BITS(((_x).video_input_definition), 6, 5)
#define EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(_x) \
	GET_BIT(((_x).video_input_definition), 4)
#define EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(_x) \
	GET_BIT(((_x).video_input_definition), 3)
#define EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(_x) \
	GET_BIT(((_x).video_input_definition), 2)
#define EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(_x) \
	GET_BIT(((_x).video_input_definition), 1)
#define EDID1_INFO_VIDEO_INPUT_SERRATION_V(_x) \
	GET_BIT(((_x).video_input_definition), 0)
	unsigned char max_size_horizontal;
	unsigned char max_size_vertical;
	unsigned char gamma;
	unsigned char feature_support;
#define EDID1_INFO_FEATURE_STANDBY(_x) \
	GET_BIT(((_x).feature_support), 7)
#define EDID1_INFO_FEATURE_SUSPEND(_x) \
	GET_BIT(((_x).feature_support), 6)
#define EDID1_INFO_FEATURE_ACTIVE_OFF(_x) \
	GET_BIT(((_x).feature_support), 5)
#define EDID1_INFO_FEATURE_DISPLAY_TYPE(_x) \
	GET_BITS(((_x).feature_support), 4, 3)
#define EDID1_INFO_FEATURE_RGB(_x) \
	GET_BIT(((_x).feature_support), 2)
#define EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(_x) \
	GET_BIT(((_x).feature_support), 1)
#define EDID1_INFO_FEATURE_DEFAULT_GTF_SUPPORT(_x) \
	GET_BIT(((_x).feature_support), 0)
	unsigned char color_characteristics[10];
	unsigned char established_timings[3];
#define EDID1_INFO_ESTABLISHED_TIMING_720X400_70(_x) \
	GET_BIT(((_x).established_timings[0]), 7)
#define EDID1_INFO_ESTABLISHED_TIMING_720X400_88(_x) \
	GET_BIT(((_x).established_timings[0]), 6)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_60(_x) \
	GET_BIT(((_x).established_timings[0]), 5)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_67(_x) \
	GET_BIT(((_x).established_timings[0]), 4)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_72(_x) \
	GET_BIT(((_x).established_timings[0]), 3)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_75(_x) \
	GET_BIT(((_x).established_timings[0]), 2)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_56(_x) \
	GET_BIT(((_x).established_timings[0]), 1)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_60(_x) \
	GET_BIT(((_x).established_timings[0]), 0)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_72(_x) \
	GET_BIT(((_x).established_timings[1]), 7)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_75(_x) \
	GET_BIT(((_x).established_timings[1]), 6)
#define EDID1_INFO_ESTABLISHED_TIMING_832X624_75(_x) \
	GET_BIT(((_x).established_timings[1]), 5)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(_x) \
	GET_BIT(((_x).established_timings[1]), 4)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(_x) \
	GET_BIT(((_x).established_timings[1]), 3)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(_x) \
	GET_BIT(((_x).established_timings[1]), 2)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(_x) \
	GET_BIT(((_x).established_timings[1]), 1)
#define EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(_x) \
	GET_BIT(((_x).established_timings[1]), 0)
#define EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(_x) \
	GET_BIT(((_x).established_timings[2]), 7)
	struct {
		unsigned char xresolution;
		unsigned char aspect_vfreq;
	} __attribute__((__packed__)) standard_timings[8];
#define EDID1_INFO_STANDARD_TIMING_XRESOLUTION(_x, _i) \
	(((_x).standard_timings[_i]).xresolution)
#define EDID1_INFO_STANDARD_TIMING_ASPECT(_x, _i) \
	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 7, 6)
#define EDID1_INFO_STANDARD_TIMING_VFREQ(_x, _i) \
	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 5, 0)
	union {
		unsigned char timing[72];
		struct edid_monitor_descriptor descriptor[4];
	} monitor_details;
	unsigned char extension_flag;
	unsigned char checksum;
} __attribute__ ((__packed__));

struct edid_cea861_info {
	unsigned char extension_tag;
#define EDID_CEA861_EXTENSION_TAG	0x02
	unsigned char revision;
	unsigned char dtd_offset;
	unsigned char dtd_count;
#define EDID_CEA861_SUPPORTS_UNDERSCAN(_x) \
	GET_BIT(((_x).dtd_count), 7)
#define EDID_CEA861_SUPPORTS_BASIC_AUDIO(_x) \
	GET_BIT(((_x).dtd_count), 6)
#define EDID_CEA861_SUPPORTS_YUV444(_x) \
	GET_BIT(((_x).dtd_count), 5)
#define EDID_CEA861_SUPPORTS_YUV422(_x) \
	GET_BIT(((_x).dtd_count), 4)
#define EDID_CEA861_DTD_COUNT(_x) \
	GET_BITS(((_x).dtd_count), 3, 0)
	unsigned char data[124];
} __attribute__ ((__packed__));

/**
 * Print the EDID info.
 *
 * @param edid_info	The EDID info to be printed
 */
void edid_print_info(struct edid1_info *edid_info);

/**
 * Check the EDID info.
 *
 * @param info  The EDID info to be checked
 * @return 0 on valid, or -1 on invalid
 */
int edid_check_info(struct edid1_info *info);

/**
 * Check checksum of a 128 bytes EDID data block
 *
 * @param edid_block	EDID block data
 *
 * @return 0 on success, or a negative errno on error
 */
int edid_check_checksum(u8 *edid_block);

/**
 * Get the horizontal and vertical rate ranges of the monitor.
 *
 * @param edid	The EDID info
 * @param hmin	Returns the minimum horizontal rate
 * @param hmax	Returns the maxium horizontal rate
 * @param vmin	Returns the minimum vertical rate
 * @param vmax	Returns the maxium vertical rate
 * @return 0 on success, or -1 on error
 */
int edid_get_ranges(struct edid1_info *edid, unsigned int *hmin,
		    unsigned int *hmax, unsigned int *vmin,
		    unsigned int *vmax);

struct display_timing;

/**
 * edid_get_timing() - Get basic digital display parameters
 *
 * @param buf		Buffer containing EDID data
 * @param buf_size	Size of buffer in bytes
 * @param timing	Place to put preferring timing information
 * @param panel_bits_per_colourp	Place to put the number of bits per
 *			colour supported by the panel. This will be set to
 *			-1 if not available
 * @return 0 if timings are OK, -ve on error
 */
int edid_get_timing(u8 *buf, int buf_size, struct display_timing *timing,
		    int *panel_bits_per_colourp);

#endif /* __EDID_H_ */
Commit	Line	Data
d46b5f7d TWHT	1	/*
	2	* Copyright (c) 2012 The Chromium OS Authors.
	3	*
	4	* (C) Copyright 2010
	5	* Petr Stetiar <ynezz@true.cz>
	6	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
d46b5f7d TWHT	8	*
	9	* Contains stolen code from ddcprobe project which is:
	10	* Copyright (C) Nalin Dahyabhai <bigfun@pobox.com>
d46b5f7d TWHT	11	*/
	12
	13	#ifndef __EDID_H_
	14	#define __EDID_H_
	15
	16	#include <linux/types.h>
	17
00cf1167 SG	18	/* Size of the EDID data */
00cf1167 SG	19	#define EDID_SIZE 128
2dcf1433	20	#define EDID_EXT_SIZE 256
00cf1167	21
d46b5f7d TWHT	22	#define GET_BIT(_x, _pos) \
	23	(((_x) >> (_pos)) & 1)
	24	#define GET_BITS(_x, _pos_msb, _pos_lsb) \
	25	(((_x) >> (_pos_lsb)) & ((1 << ((_pos_msb) - (_pos_lsb) + 1)) - 1))
	26
	27	/* Aspect ratios used in EDID info. */
	28	enum edid_aspect {
	29	ASPECT_625 = 0,
	30	ASPECT_75,
	31	ASPECT_8,
	32	ASPECT_5625,
	33	};
	34
	35	/* Detailed timing information used in EDID v1.x */
	36	struct edid_detailed_timing {
	37	unsigned char pixel_clock[2];
	38	#define EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \
	39	(((((uint32_t)(_x).pixel_clock[1]) << 8) + \
	40	(_x).pixel_clock[0]) * 10000)
	41	unsigned char horizontal_active;
	42	unsigned char horizontal_blanking;
	43	unsigned char horizontal_active_blanking_hi;
	44	#define EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \
	45	((GET_BITS((_x).horizontal_active_blanking_hi, 7, 4) << 8) + \
	46	(_x).horizontal_active)
	47	#define EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \
	48	((GET_BITS((_x).horizontal_active_blanking_hi, 3, 0) << 8) + \
	49	(_x).horizontal_blanking)
	50	unsigned char vertical_active;
	51	unsigned char vertical_blanking;
	52	unsigned char vertical_active_blanking_hi;
	53	#define EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \
	54	((GET_BITS((_x).vertical_active_blanking_hi, 7, 4) << 8) + \
	55	(_x).vertical_active)
	56	#define EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \
	57	((GET_BITS((_x).vertical_active_blanking_hi, 3, 0) << 8) + \
	58	(_x).vertical_blanking)
	59	unsigned char hsync_offset;
	60	unsigned char hsync_pulse_width;
1dc793dd	61	unsigned char vsync_offset_pulse_width;
d46b5f7d TWHT	62	unsigned char hsync_vsync_offset_pulse_width_hi;
	63	#define EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \
	64	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 7, 6) << 8) + \
	65	(_x).hsync_offset)
	66	#define EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \
	67	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 5, 4) << 8) + \
	68	(_x).hsync_pulse_width)
	69	#define EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \
	70	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 3, 2) << 4) + \
	71	GET_BITS((_x).vsync_offset_pulse_width, 7, 4))
	72	#define EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \
	73	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 1, 0) << 4) + \
	74	GET_BITS((_x).vsync_offset_pulse_width, 3, 0))
	75	unsigned char himage_size;
	76	unsigned char vimage_size;
	77	unsigned char himage_vimage_size_hi;
	78	#define EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \
	79	((GET_BITS((_x).himage_vimage_size_hi, 7, 4) << 8) + (_x).himage_size)
	80	#define EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \
	81	((GET_BITS((_x).himage_vimage_size_hi, 3, 0) << 8) + (_x).vimage_size)
	82	unsigned char hborder;
	83	unsigned char vborder;
	84	unsigned char flags;
	85	#define EDID_DETAILED_TIMING_FLAG_INTERLACED(_x) \
	86	GET_BIT((_x).flags, 7)
	87	#define EDID_DETAILED_TIMING_FLAG_STEREO(_x) \
	88	GET_BITS((_x).flags, 6, 5)
	89	#define EDID_DETAILED_TIMING_FLAG_DIGITAL_COMPOSITE(_x) \
	90	GET_BITS((_x).flags, 4, 3)
	91	#define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \
	92	GET_BITS((_x).flags, 2, 1)
b7ce12dd HG	93	#define EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(_x) \
	94	GET_BIT((_x).flags, 2)
	95	#define EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(_x) \
	96	GET_BIT((_x).flags, 1)
d46b5f7d TWHT	97	#define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \
	98	GET_BIT((_x).flags, 0)
	99	} __attribute__ ((__packed__));
	100
	101	enum edid_monitor_descriptor_types {
	102	EDID_MONITOR_DESCRIPTOR_SERIAL = 0xff,
	103	EDID_MONITOR_DESCRIPTOR_ASCII = 0xfe,
	104	EDID_MONITOR_DESCRIPTOR_RANGE = 0xfd,
	105	EDID_MONITOR_DESCRIPTOR_NAME = 0xfc,
	106	};
	107
	108	struct edid_monitor_descriptor {
	109	uint16_t zero_flag_1;
	110	unsigned char zero_flag_2;
	111	unsigned char type;
	112	unsigned char zero_flag_3;
	113	union {
	114	char string[13];
	115	struct {
	116	unsigned char vertical_min;
	117	unsigned char vertical_max;
	118	unsigned char horizontal_min;
	119	unsigned char horizontal_max;
	120	unsigned char pixel_clock_max;
	121	unsigned char gtf_data[8];
	122	} range_data;
	123	} data;
	124	} __attribute__ ((__packed__));
	125
	126	struct edid1_info {
	127	unsigned char header[8];
	128	unsigned char manufacturer_name[2];
	129	#define EDID1_INFO_MANUFACTURER_NAME_ZERO(_x) \
	130	GET_BIT(((_x).manufacturer_name[0]), 7)
	131	#define EDID1_INFO_MANUFACTURER_NAME_CHAR1(_x) \
	132	GET_BITS(((_x).manufacturer_name[0]), 6, 2)
	133	#define EDID1_INFO_MANUFACTURER_NAME_CHAR2(_x) \
	134	((GET_BITS(((_x).manufacturer_name[0]), 1, 0) << 3) + \
	135	GET_BITS(((_x).manufacturer_name[1]), 7, 5))
	136	#define EDID1_INFO_MANUFACTURER_NAME_CHAR3(_x) \
	137	GET_BITS(((_x).manufacturer_name[1]), 4, 0)
	138	unsigned char product_code[2];
	139	#define EDID1_INFO_PRODUCT_CODE(_x) \
	140	(((uint16_t)(_x).product_code[1] << 8) + (_x).product_code[0])
	141	unsigned char serial_number[4];
	142	#define EDID1_INFO_SERIAL_NUMBER(_x) \
	143	(((uint32_t)(_x).serial_number[3] << 24) + \
	144	((_x).serial_number[2] << 16) + ((_x).serial_number[1] << 8) + \
	145	(_x).serial_number[0])
	146	unsigned char week;
	147	unsigned char year;
	148	unsigned char version;
	149	unsigned char revision;
	150	unsigned char video_input_definition;
	151	#define EDID1_INFO_VIDEO_INPUT_DIGITAL(_x) \
	152	GET_BIT(((_x).video_input_definition), 7)
	153	#define EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(_x) \
	154	GET_BITS(((_x).video_input_definition), 6, 5)
	155	#define EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(_x) \
	156	GET_BIT(((_x).video_input_definition), 4)
	157	#define EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(_x) \
	158	GET_BIT(((_x).video_input_definition), 3)
	159	#define EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(_x) \
	160	GET_BIT(((_x).video_input_definition), 2)
161	#define EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(_x) \
162	GET_BIT(((_x).video_input_definition), 1)
163	#define EDID1_INFO_VIDEO_INPUT_SERRATION_V(_x) \
164	GET_BIT(((_x).video_input_definition), 0)
165	unsigned char max_size_horizontal;
166	unsigned char max_size_vertical;
167	unsigned char gamma;
168	unsigned char feature_support;
169	#define EDID1_INFO_FEATURE_STANDBY(_x) \
170	GET_BIT(((_x).feature_support), 7)
171	#define EDID1_INFO_FEATURE_SUSPEND(_x) \
172	GET_BIT(((_x).feature_support), 6)
173	#define EDID1_INFO_FEATURE_ACTIVE_OFF(_x) \
174	GET_BIT(((_x).feature_support), 5)
175	#define EDID1_INFO_FEATURE_DISPLAY_TYPE(_x) \
176	GET_BITS(((_x).feature_support), 4, 3)
177	#define EDID1_INFO_FEATURE_RGB(_x) \
178	GET_BIT(((_x).feature_support), 2)
179	#define EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(_x) \
180	GET_BIT(((_x).feature_support), 1)
181	#define EDID1_INFO_FEATURE_DEFAULT_GTF_SUPPORT(_x) \
182	GET_BIT(((_x).feature_support), 0)
183	unsigned char color_characteristics[10];
184	unsigned char established_timings[3];
185	#define EDID1_INFO_ESTABLISHED_TIMING_720X400_70(_x) \
186	GET_BIT(((_x).established_timings[0]), 7)
187	#define EDID1_INFO_ESTABLISHED_TIMING_720X400_88(_x) \
188	GET_BIT(((_x).established_timings[0]), 6)
189	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_60(_x) \
190	GET_BIT(((_x).established_timings[0]), 5)
191	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_67(_x) \
192	GET_BIT(((_x).established_timings[0]), 4)
193	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_72(_x) \
194	GET_BIT(((_x).established_timings[0]), 3)
195	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_75(_x) \
196	GET_BIT(((_x).established_timings[0]), 2)
197	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_56(_x) \
198	GET_BIT(((_x).established_timings[0]), 1)
199	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_60(_x) \
200	GET_BIT(((_x).established_timings[0]), 0)
201	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_72(_x) \
202	GET_BIT(((_x).established_timings[1]), 7)
203	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_75(_x) \
204	GET_BIT(((_x).established_timings[1]), 6)
205	#define EDID1_INFO_ESTABLISHED_TIMING_832X624_75(_x) \
206	GET_BIT(((_x).established_timings[1]), 5)
207	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(_x) \
208	GET_BIT(((_x).established_timings[1]), 4)
209	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(_x) \
210	GET_BIT(((_x).established_timings[1]), 3)
211	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(_x) \
212	GET_BIT(((_x).established_timings[1]), 2)
213	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(_x) \
214	GET_BIT(((_x).established_timings[1]), 1)
215	#define EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(_x) \
216	GET_BIT(((_x).established_timings[1]), 0)
217	#define EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(_x) \
218	GET_BIT(((_x).established_timings[2]), 7)
219	struct {
220	unsigned char xresolution;
221	unsigned char aspect_vfreq;
222	} __attribute__((__packed__)) standard_timings[8];
223	#define EDID1_INFO_STANDARD_TIMING_XRESOLUTION(_x, _i) \
224	(((_x).standard_timings[_i]).xresolution)
225	#define EDID1_INFO_STANDARD_TIMING_ASPECT(_x, _i) \
226	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 7, 6)
227	#define EDID1_INFO_STANDARD_TIMING_VFREQ(_x, _i) \
228	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 5, 0)
229	union {
230	unsigned char timing[72];
231	struct edid_monitor_descriptor descriptor[4];
232	} monitor_details;
233	unsigned char extension_flag;
234	unsigned char checksum;
235	} __attribute__ ((__packed__));
d2fabdc7 HG	236
	237	struct edid_cea861_info {
	238	unsigned char extension_tag;
	239	#define EDID_CEA861_EXTENSION_TAG 0x02
	240	unsigned char revision;
	241	unsigned char dtd_offset;
	242	unsigned char dtd_count;
	243	#define EDID_CEA861_SUPPORTS_UNDERSCAN(_x) \
	244	GET_BIT(((_x).dtd_count), 7)
	245	#define EDID_CEA861_SUPPORTS_BASIC_AUDIO(_x) \
	246	GET_BIT(((_x).dtd_count), 6)
	247	#define EDID_CEA861_SUPPORTS_YUV444(_x) \
	248	GET_BIT(((_x).dtd_count), 5)
	249	#define EDID_CEA861_SUPPORTS_YUV422(_x) \
	250	GET_BIT(((_x).dtd_count), 4)
	251	#define EDID_CEA861_DTD_COUNT(_x) \
	252	GET_BITS(((_x).dtd_count), 3, 0)
	253	unsigned char data[124];
	254	} __attribute__ ((__packed__));
d46b5f7d TWHT	255
	256	/**
	257	* Print the EDID info.
	258	*
	259	* @param edid_info The EDID info to be printed
	260	*/
	261	void edid_print_info(struct edid1_info *edid_info);
	262
	263	/**
	264	* Check the EDID info.
	265	*
	266	* @param info The EDID info to be checked
	267	* @return 0 on valid, or -1 on invalid
	268	*/
	269	int edid_check_info(struct edid1_info *info);
	270
e745d064 HG	271	/**
	272	* Check checksum of a 128 bytes EDID data block
	273	*
	274	* @param edid_block EDID block data
	275	*
	276	* @return 0 on success, or a negative errno on error
	277	*/
	278	int edid_check_checksum(u8 *edid_block);
	279
d46b5f7d TWHT	280	/**
	281	* Get the horizontal and vertical rate ranges of the monitor.
	282	*
	283	* @param edid The EDID info
	284	* @param hmin Returns the minimum horizontal rate
	285	* @param hmax Returns the maxium horizontal rate
	286	* @param vmin Returns the minimum vertical rate
	287	* @param vmax Returns the maxium vertical rate
	288	* @return 0 on success, or -1 on error
	289	*/
	290	int edid_get_ranges(struct edid1_info edid, unsigned int hmin,
	291	unsigned int hmax, unsigned int vmin,
	292	unsigned int *vmax);
	293
00cf1167 SG	294	struct display_timing;
	295
	296	/**
	297	* edid_get_timing() - Get basic digital display parameters
	298	*
	299	* @param buf Buffer containing EDID data
	300	* @param buf_size Size of buffer in bytes
	301	* @param timing Place to put preferring timing information
	302	* @param panel_bits_per_colourp Place to put the number of bits per
	303	* colour supported by the panel. This will be set to
	304	* -1 if not available
	305	* @return 0 if timings are OK, -ve on error
	306	*/
	307	int edid_get_timing(u8 buf, int buf_size, struct display_timing timing,
	308	int *panel_bits_per_colourp);
	309
d46b5f7d	310	#endif /* __EDID_H_ */