mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 10:43:06 +00:00
185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
345 lines
12 KiB
C
345 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (c) 2012 The Chromium OS Authors.
|
|
*
|
|
* (C) Copyright 2010
|
|
* Petr Stetiar <ynezz@true.cz>
|
|
*
|
|
* 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
|
|
|
|
/* OUI of HDMI vendor specific data block */
|
|
#define HDMI_IEEE_OUI 0x000c03
|
|
|
|
#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__));
|
|
|
|
enum edid_cea861_db_types {
|
|
EDID_CEA861_DB_AUDIO = 0x01,
|
|
EDID_CEA861_DB_VIDEO = 0x02,
|
|
EDID_CEA861_DB_VENDOR = 0x03,
|
|
EDID_CEA861_DB_SPEAKER = 0x04,
|
|
};
|
|
|
|
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];
|
|
#define EDID_CEA861_DB_TYPE(_x, offset) \
|
|
GET_BITS((_x).data[offset], 7, 5)
|
|
#define EDID_CEA861_DB_LEN(_x, offset) \
|
|
GET_BITS((_x).data[offset], 4, 0)
|
|
} __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_validate() - Get basic digital display parameters with
|
|
* mode selection callback
|
|
*
|
|
* @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
|
|
* @param mode_valid Callback validating mode, returning true is mode is
|
|
* supported, false otherwise.
|
|
* @parem valid_priv Pointer to private data for mode_valid callback
|
|
* Return: 0 if timings are OK, -ve on error
|
|
*/
|
|
int edid_get_timing_validate(u8 *buf, int buf_size,
|
|
struct display_timing *timing,
|
|
int *panel_bits_per_colourp,
|
|
bool (*mode_valid)(void *priv,
|
|
const struct display_timing *timing),
|
|
void *mode_valid_priv);
|
|
|
|
/**
|
|
* 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_ */
|