[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>

#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_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__));

/**
 * 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);

/**
 * 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);

#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
	18	#define GET_BIT(_x, _pos) \
	19	(((_x) >> (_pos)) & 1)
	20	#define GET_BITS(_x, _pos_msb, _pos_lsb) \
	21	(((_x) >> (_pos_lsb)) & ((1 << ((_pos_msb) - (_pos_lsb) + 1)) - 1))
	22
	23	/* Aspect ratios used in EDID info. */
	24	enum edid_aspect {
	25	ASPECT_625 = 0,
	26	ASPECT_75,
	27	ASPECT_8,
	28	ASPECT_5625,
	29	};
	30
	31	/* Detailed timing information used in EDID v1.x */
	32	struct edid_detailed_timing {
	33	unsigned char pixel_clock[2];
	34	#define EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \
	35	(((((uint32_t)(_x).pixel_clock[1]) << 8) + \
	36	(_x).pixel_clock[0]) * 10000)
	37	unsigned char horizontal_active;
	38	unsigned char horizontal_blanking;
	39	unsigned char horizontal_active_blanking_hi;
	40	#define EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \
	41	((GET_BITS((_x).horizontal_active_blanking_hi, 7, 4) << 8) + \
	42	(_x).horizontal_active)
	43	#define EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \
	44	((GET_BITS((_x).horizontal_active_blanking_hi, 3, 0) << 8) + \
	45	(_x).horizontal_blanking)
	46	unsigned char vertical_active;
	47	unsigned char vertical_blanking;
	48	unsigned char vertical_active_blanking_hi;
	49	#define EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \
	50	((GET_BITS((_x).vertical_active_blanking_hi, 7, 4) << 8) + \
	51	(_x).vertical_active)
	52	#define EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \
	53	((GET_BITS((_x).vertical_active_blanking_hi, 3, 0) << 8) + \
	54	(_x).vertical_blanking)
	55	unsigned char hsync_offset;
	56	unsigned char hsync_pulse_width;
1dc793dd	57	unsigned char vsync_offset_pulse_width;
d46b5f7d TWHT	58	unsigned char hsync_vsync_offset_pulse_width_hi;
	59	#define EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \
	60	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 7, 6) << 8) + \
	61	(_x).hsync_offset)
	62	#define EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \
	63	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 5, 4) << 8) + \
	64	(_x).hsync_pulse_width)
	65	#define EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \
	66	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 3, 2) << 4) + \
	67	GET_BITS((_x).vsync_offset_pulse_width, 7, 4))
	68	#define EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \
	69	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 1, 0) << 4) + \
	70	GET_BITS((_x).vsync_offset_pulse_width, 3, 0))
	71	unsigned char himage_size;
	72	unsigned char vimage_size;
	73	unsigned char himage_vimage_size_hi;
	74	#define EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \
	75	((GET_BITS((_x).himage_vimage_size_hi, 7, 4) << 8) + (_x).himage_size)
	76	#define EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \
	77	((GET_BITS((_x).himage_vimage_size_hi, 3, 0) << 8) + (_x).vimage_size)
	78	unsigned char hborder;
	79	unsigned char vborder;
	80	unsigned char flags;
	81	#define EDID_DETAILED_TIMING_FLAG_INTERLACED(_x) \
	82	GET_BIT((_x).flags, 7)
	83	#define EDID_DETAILED_TIMING_FLAG_STEREO(_x) \
	84	GET_BITS((_x).flags, 6, 5)
	85	#define EDID_DETAILED_TIMING_FLAG_DIGITAL_COMPOSITE(_x) \
	86	GET_BITS((_x).flags, 4, 3)
	87	#define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \
	88	GET_BITS((_x).flags, 2, 1)
	89	#define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \
	90	GET_BIT((_x).flags, 0)
	91	} __attribute__ ((__packed__));
	92
	93	enum edid_monitor_descriptor_types {
	94	EDID_MONITOR_DESCRIPTOR_SERIAL = 0xff,
	95	EDID_MONITOR_DESCRIPTOR_ASCII = 0xfe,
	96	EDID_MONITOR_DESCRIPTOR_RANGE = 0xfd,
	97	EDID_MONITOR_DESCRIPTOR_NAME = 0xfc,
	98	};
	99
	100	struct edid_monitor_descriptor {
	101	uint16_t zero_flag_1;
	102	unsigned char zero_flag_2;
	103	unsigned char type;
	104	unsigned char zero_flag_3;
	105	union {
	106	char string[13];
	107	struct {
	108	unsigned char vertical_min;
	109	unsigned char vertical_max;
	110	unsigned char horizontal_min;
	111	unsigned char horizontal_max;
	112	unsigned char pixel_clock_max;
	113	unsigned char gtf_data[8];
	114	} range_data;
	115	} data;
	116	} __attribute__ ((__packed__));
	117
	118	struct edid1_info {
	119	unsigned char header[8];
	120	unsigned char manufacturer_name[2];
	121	#define EDID1_INFO_MANUFACTURER_NAME_ZERO(_x) \
122	GET_BIT(((_x).manufacturer_name[0]), 7)
123	#define EDID1_INFO_MANUFACTURER_NAME_CHAR1(_x) \
124	GET_BITS(((_x).manufacturer_name[0]), 6, 2)
125	#define EDID1_INFO_MANUFACTURER_NAME_CHAR2(_x) \
126	((GET_BITS(((_x).manufacturer_name[0]), 1, 0) << 3) + \
127	GET_BITS(((_x).manufacturer_name[1]), 7, 5))
128	#define EDID1_INFO_MANUFACTURER_NAME_CHAR3(_x) \
129	GET_BITS(((_x).manufacturer_name[1]), 4, 0)
130	unsigned char product_code[2];
131	#define EDID1_INFO_PRODUCT_CODE(_x) \
132	(((uint16_t)(_x).product_code[1] << 8) + (_x).product_code[0])
133	unsigned char serial_number[4];
134	#define EDID1_INFO_SERIAL_NUMBER(_x) \
135	(((uint32_t)(_x).serial_number[3] << 24) + \
136	((_x).serial_number[2] << 16) + ((_x).serial_number[1] << 8) + \
137	(_x).serial_number[0])
138	unsigned char week;
139	unsigned char year;
140	unsigned char version;
141	unsigned char revision;
142	unsigned char video_input_definition;
143	#define EDID1_INFO_VIDEO_INPUT_DIGITAL(_x) \
144	GET_BIT(((_x).video_input_definition), 7)
145	#define EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(_x) \
146	GET_BITS(((_x).video_input_definition), 6, 5)
147	#define EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(_x) \
148	GET_BIT(((_x).video_input_definition), 4)
149	#define EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(_x) \
150	GET_BIT(((_x).video_input_definition), 3)
151	#define EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(_x) \
152	GET_BIT(((_x).video_input_definition), 2)
153	#define EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(_x) \
154	GET_BIT(((_x).video_input_definition), 1)
155	#define EDID1_INFO_VIDEO_INPUT_SERRATION_V(_x) \
156	GET_BIT(((_x).video_input_definition), 0)
157	unsigned char max_size_horizontal;
158	unsigned char max_size_vertical;
159	unsigned char gamma;
160	unsigned char feature_support;
161	#define EDID1_INFO_FEATURE_STANDBY(_x) \
162	GET_BIT(((_x).feature_support), 7)
163	#define EDID1_INFO_FEATURE_SUSPEND(_x) \
164	GET_BIT(((_x).feature_support), 6)
165	#define EDID1_INFO_FEATURE_ACTIVE_OFF(_x) \
166	GET_BIT(((_x).feature_support), 5)
167	#define EDID1_INFO_FEATURE_DISPLAY_TYPE(_x) \
168	GET_BITS(((_x).feature_support), 4, 3)
169	#define EDID1_INFO_FEATURE_RGB(_x) \
170	GET_BIT(((_x).feature_support), 2)
171	#define EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(_x) \
172	GET_BIT(((_x).feature_support), 1)
173	#define EDID1_INFO_FEATURE_DEFAULT_GTF_SUPPORT(_x) \
174	GET_BIT(((_x).feature_support), 0)
175	unsigned char color_characteristics[10];
176	unsigned char established_timings[3];
177	#define EDID1_INFO_ESTABLISHED_TIMING_720X400_70(_x) \
178	GET_BIT(((_x).established_timings[0]), 7)
179	#define EDID1_INFO_ESTABLISHED_TIMING_720X400_88(_x) \
180	GET_BIT(((_x).established_timings[0]), 6)
181	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_60(_x) \
182	GET_BIT(((_x).established_timings[0]), 5)
183	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_67(_x) \
184	GET_BIT(((_x).established_timings[0]), 4)
185	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_72(_x) \
186	GET_BIT(((_x).established_timings[0]), 3)
187	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_75(_x) \
188	GET_BIT(((_x).established_timings[0]), 2)
189	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_56(_x) \
190	GET_BIT(((_x).established_timings[0]), 1)
191	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_60(_x) \
192	GET_BIT(((_x).established_timings[0]), 0)
193	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_72(_x) \
194	GET_BIT(((_x).established_timings[1]), 7)
195	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_75(_x) \
196	GET_BIT(((_x).established_timings[1]), 6)
197	#define EDID1_INFO_ESTABLISHED_TIMING_832X624_75(_x) \
198	GET_BIT(((_x).established_timings[1]), 5)
199	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(_x) \
200	GET_BIT(((_x).established_timings[1]), 4)
201	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(_x) \
202	GET_BIT(((_x).established_timings[1]), 3)
203	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(_x) \
204	GET_BIT(((_x).established_timings[1]), 2)
205	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(_x) \
206	GET_BIT(((_x).established_timings[1]), 1)
207	#define EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(_x) \
208	GET_BIT(((_x).established_timings[1]), 0)
209	#define EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(_x) \
210	GET_BIT(((_x).established_timings[2]), 7)
211	struct {
212	unsigned char xresolution;
213	unsigned char aspect_vfreq;
214	} __attribute__((__packed__)) standard_timings[8];
215	#define EDID1_INFO_STANDARD_TIMING_XRESOLUTION(_x, _i) \
216	(((_x).standard_timings[_i]).xresolution)
217	#define EDID1_INFO_STANDARD_TIMING_ASPECT(_x, _i) \
218	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 7, 6)
219	#define EDID1_INFO_STANDARD_TIMING_VFREQ(_x, _i) \
220	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 5, 0)
221	union {
222	unsigned char timing[72];
223	struct edid_monitor_descriptor descriptor[4];
224	} monitor_details;
225	unsigned char extension_flag;
226	unsigned char checksum;
227	} __attribute__ ((__packed__));
228
229	/**
230	* Print the EDID info.
231	*
232	* @param edid_info The EDID info to be printed
233	*/
234	void edid_print_info(struct edid1_info *edid_info);
235
236	/**
237	* Check the EDID info.
238	*
239	* @param info The EDID info to be checked
240	* @return 0 on valid, or -1 on invalid
241	*/
242	int edid_check_info(struct edid1_info *info);
243
244	/**
245	* Get the horizontal and vertical rate ranges of the monitor.
246	*
247	* @param edid The EDID info
248	* @param hmin Returns the minimum horizontal rate
249	* @param hmax Returns the maxium horizontal rate
250	* @param vmin Returns the minimum vertical rate
251	* @param vmax Returns the maxium vertical rate
252	* @return 0 on success, or -1 on error
253	*/
254	int edid_get_ranges(struct edid1_info edid, unsigned int hmin,
255	unsigned int hmax, unsigned int vmin,
256	unsigned int *vmax);
257
258	#endif /* __EDID_H_ */