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/*++
* linux/drivers/video/wmt/edid.h
* WonderMedia video post processor (VPP) driver
*
* Copyright c 2013 WonderMedia Technologies, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* WonderMedia Technologies, Inc.
* 4F, 533, Chung-Cheng Road, Hsin-Tien, Taipei 231, R.O.C
--*/
#ifndef EDID_H
#define EDID_H
#define EDID_BLOCK_MAX 4
/*------------------------------------------------------------------------------
Following definitions, please refer spec of EDID. You may refer it on
http://en.wikipedia.org/wiki/EDID#EDID_1.3_data_format
------------------------------------------------------------------------------*/
#define EDID_LENGTH 0x80
/*------------------------------------------------------------------------------
Offset 00-19: HEADER INFORMATION
------------------------------------------------------------------------------*/
/* 00¡V07: Header information "00h FFh FFh FFh FFh FFh FFh 00h" */
#define EDID_HEADER 0x00
#define EDID_HEADER_END 0x07
/* 08¡V09: Manufacturer ID. These IDs are assigned by Microsoft.
"00001=A¡¨; ¡§00010=B¡¨; ... ¡§11010=Z¡¨. Bit 7 (at address 08h) is 0,
the first character (letter) is located at bits 6 ¡÷ 2
(at address 08h), the second character (letter) is located at
bits 1 & 0 (at address 08h) and bits 7 ¡÷ 5 (at address 09h), and the
third character (letter) is located at bits 4 ¡÷ 0 (at address 09h).
*/
#define ID_MANUFACTURER_NAME 0x08
#define ID_MANUFACTURER_NAME_END 0x09
/* 10¡V11: Product ID Code (stored as LSB first). Assigned by manufacturer */
#define ID_MODEL 0x0a
/* 12¡V15: 32-bit Serial Number. No requirement for the format. Usually
stored as LSB first. In order to maintain compatibility with previous
requirements the field should set at least one byte of the field to be
non-zero if an ASCII serial number descriptor is
provided in the detailed timing section.
*/
#define ID_SERIAL_NUMBER 0x0c
/* 16: Week of Manufacture. This varies by manufacturer. One way is to count
January 1-7 as week 1, January 8-15 as week 2 and so on. Some count
based on the week number (Sunday-Saturday). Valid range is 1-54.
17: Year of Manufacture. Add 1990 to the value for actual year. */
#define MANUFACTURE_WEEK 0x10
#define MANUFACTURE_YEAR 0x11
/* 18: EDID Version Number. "01h"
19: EDID Revision Number "03h" */
#define EDID_STRUCT_VERSION 0x12
#define EDID_STRUCT_REVISION 0x13
/*------------------------------------------------------------------------------
Offset 20-24: BASIC DISPLAY PARAMETERS
------------------------------------------------------------------------------*/
#define DPMS_FLAGS 0x18
#define ESTABLISHED_TIMING_I 0x23
#define ESTABLISHED_TIMING_II 0x24
#define MANUFACTURERS_TIMINGS 0x25
#define STANDARD_TIMING_IDENTIFICATION_START 0x26
#define STANDARD_TIMING_IDENTIFICATION_SIZE 16
#define DETAILED_TIMING_DESCRIPTIONS_START 0x36
#define DETAILED_TIMING_DESCRIPTION_SIZE 18
#define NO_DETAILED_TIMING_DESCRIPTIONS 4
#define DETAILED_TIMING_DESCRIPTION_1 0x36
#define DETAILED_TIMING_DESCRIPTION_2 0x48
#define DETAILED_TIMING_DESCRIPTION_3 0x5a
#define DETAILED_TIMING_DESCRIPTION_4 0x6c
#define EDID_TMR_INTERLACE BIT(31)
#define EDID_TMR_FREQ 0xFF
typedef struct {
unsigned int resx;
unsigned int resy;
int freq; /* EDID_TMR_XXX */
} edid_timing_t;
/* EDID option flag */
#define EDID_OPT_VALID 0x01
#define EDID_OPT_YUV422 0x10
#define EDID_OPT_YUV444 0x20
#define EDID_OPT_AUDIO 0x40
#define EDID_OPT_UNDERSCAN 0x80
#define EDID_OPT_HDMI 0x100
#define EDID_OPT_3D BIT(9)
#define EDID_OPT_16_9 BIT(10)
typedef struct {
unsigned int establish_timing;
edid_timing_t standard_timing[8];
struct fb_videomode detail_timing[4];
struct fb_videomode cea_timing[6];
char cea_vic[8];
unsigned int pixel_clock_limit;
unsigned int option;
unsigned short hdmi_phy_addr;
} edid_info_t;
#define VENDOR_NAME_LEN 4
#define MONITOR_NAME_LEN 20
#define AUD_SAD_NUM 32
typedef struct {
char flag; /* 0: sad available, 1: sad invalid */
char sad_byte[3];
} sad_t;
typedef struct {
char vendor_name[VENDOR_NAME_LEN];
char monitor_name[MONITOR_NAME_LEN];
} tv_name_t;
typedef struct {
tv_name_t tv_name;
sad_t sad[AUD_SAD_NUM];
} edid_parsed_t;
extern edid_info_t edid_info;
extern int edid_msg_enable;
extern int edid_disable;
extern edid_parsed_t edid_parsed;
extern int edid_parse(char *edid, edid_info_t *info);
extern int edid_find_support(edid_info_t *info, unsigned int resx,
unsigned int resy, int freq, struct fb_videomode **vmode);
extern void edid_dump(char *edid);
extern int edid_checksum(char *edid, int len);
extern unsigned int edid_get_hdmi_phy_addr(void);
#endif
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