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/*
* linux/drivers/video/omap2/dss/edid.c
*
* Copyright (C) 2009 Texas Instruments
* Author: Mythri P K <mythripk@ti.com>
* with some of the ENUM's and structure derived from Yong Zhi's
* hdmi.h(Now obsolete)
*
* EDID.c to read the EDID content , given the 256 Bytes EDID.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* 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/>.
* History:
*
*/
#ifndef _EDID_H_
#define _EDID_H_
#include <plat/display.h>
/* HDMI EDID Extension Data Block Tags */
#define HDMI_EDID_EX_DATABLOCK_TAG_MASK 0xE0
#define HDMI_EDID_EX_DATABLOCK_LEN_MASK 0x1F
#define EDID_TIMING_DESCRIPTOR_SIZE 0x12
#define EDID_DESCRIPTOR_BLOCK0_ADDRESS 0x36
#define EDID_DESCRIPTOR_BLOCK1_ADDRESS 0x80
#define EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR 4
#define EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR 4
#define HDMI_EDID_DETAILED_TIMING_OFFSET 0x36 /*EDID Detailed Timing
Info 0 begin offset*/
#define HDMI_EDID_PIX_CLK_OFFSET 0
#define HDMI_EDID_H_ACTIVE_OFFSET 2
#define HDMI_EDID_H_BLANKING_OFFSET 3
#define HDMI_EDID_V_ACTIVE_OFFSET 5
#define HDMI_EDID_V_BLANKING_OFFSET 6
#define HDMI_EDID_H_SYNC_OFFSET 8
#define HDMI_EDID_H_SYNC_PW_OFFSET 9
#define HDMI_EDID_V_SYNC_OFFSET 10
#define HDMI_EDID_V_SYNC_PW_OFFSET 10
#define HDMI_EDID_H_IMAGE_SIZE_OFFSET 12
#define HDMI_EDID_V_IMAGE_SIZE_OFFSET 13
#define HDMI_EDID_H_BORDER_OFFSET 15
#define HDMI_EDID_V_BORDER_OFFSET 16
#define HDMI_EDID_FLAGS_OFFSET 17
/* HDMI Connected States */
#define HDMI_STATE_NOMONITOR 0 /* No HDMI monitor connected*/
#define HDMI_STATE_CONNECTED 1 /* HDMI monitor connected but powered off*/
#define HDMI_STATE_ON 2 /* HDMI monitor connected and powered on*/
/* HDMI EDID Length */
#define HDMI_EDID_MAX_LENGTH 512
/* HDMI EDID DTDs */
#define HDMI_EDID_MAX_DTDS 4
/* HDMI EDID DTD Tags */
#define HDMI_EDID_DTD_TAG_MONITOR_NAME 0xFC
#define HDMI_EDID_DTD_TAG_MONITOR_SERIALNUM 0xFF
#define HDMI_EDID_DTD_TAG_MONITOR_LIMITS 0xFD
#define HDMI_EDID_DTD_TAG_STANDARD_TIMING_DATA 0xFA
#define HDMI_EDID_DTD_TAG_COLOR_POINT_DATA 0xFB
#define HDMI_EDID_DTD_TAG_ASCII_STRING 0xFE
#define HDMI_IMG_FORMAT_MAX_LENGTH 20
#define HDMI_AUDIO_FORMAT_MAX_LENGTH 10
/* HDMI EDID Extenion Data Block Values: Video */
#define HDMI_EDID_EX_VIDEO_NATIVE 0x80
#define HDMI_EDID_EX_VIDEO_MASK 0x7F
#define HDMI_EDID_EX_VIDEO_MAX 35
#define HDMI_EDID_EX_VIDEO_640x480p_60Hz_4_3 1
#define HDMI_EDID_EX_VIDEO_720x480p_60Hz_4_3 2
#define HDMI_EDID_EX_VIDEO_720x480p_60Hz_16_9 3
#define HDMI_EDID_EX_VIDEO_1280x720p_60Hz_16_9 4
#define HDMI_EDID_EX_VIDEO_1920x1080i_60Hz_16_9 5
#define HDMI_EDID_EX_VIDEO_720x480i_60Hz_4_3 6
#define HDMI_EDID_EX_VIDEO_720x480i_60Hz_16_9 7
#define HDMI_EDID_EX_VIDEO_720x240p_60Hz_4_3 8
#define HDMI_EDID_EX_VIDEO_720x240p_60Hz_16_9 9
#define HDMI_EDID_EX_VIDEO_2880x480i_60Hz_4_3 10
#define HDMI_EDID_EX_VIDEO_2880x480i_60Hz_16_9 11
#define HDMI_EDID_EX_VIDEO_2880x480p_60Hz_4_3 12
#define HDMI_EDID_EX_VIDEO_2880x480p_60Hz_16_9 13
#define HDMI_EDID_EX_VIDEO_1440x480p_60Hz_4_3 14
#define HDMI_EDID_EX_VIDEO_1440x480p_60Hz_16_9 15
#define HDMI_EDID_EX_VIDEO_1920x1080p_60Hz_16_9 16
#define HDMI_EDID_EX_VIDEO_720x576p_50Hz_4_3 17
#define HDMI_EDID_EX_VIDEO_720x576p_50Hz_16_9 18
#define HDMI_EDID_EX_VIDEO_1280x720p_50Hz_16_9 19
#define HDMI_EDID_EX_VIDEO_1920x1080i_50Hz_16_9 20
#define HDMI_EDID_EX_VIDEO_720x576i_50Hz_4_3 21
#define HDMI_EDID_EX_VIDEO_720x576i_50Hz_16_9 22
#define HDMI_EDID_EX_VIDEO_720x288p_50Hz_4_3 23
#define HDMI_EDID_EX_VIDEO_720x288p_50Hz_16_9 24
#define HDMI_EDID_EX_VIDEO_2880x576i_50Hz_4_3 25
#define HDMI_EDID_EX_VIDEO_2880x576i_50Hz_16_9 26
#define HDMI_EDID_EX_VIDEO_2880x288p_50Hz_4_3 27
#define HDMI_EDID_EX_VIDEO_2880x288p_50Hz_16_9 28
#define HDMI_EDID_EX_VIDEO_1440x576p_50Hz_4_3 29
#define HDMI_EDID_EX_VIDEO_1440x576p_50Hz_16_9 30
#define HDMI_EDID_EX_VIDEO_1920x1080p_50Hz_16_9 31
#define HDMI_EDID_EX_VIDEO_1920x1080p_24Hz_16_9 32
#define HDMI_EDID_EX_VIDEO_1920x1080p_25Hz_16_9 33
#define HDMI_EDID_EX_VIDEO_1920x1080p_30Hz_16_9 34
#ifdef __cplusplus
extern "C" {
#endif
enum extension_edid_db {
DATABLOCK_AUDIO = 1,
DATABLOCK_VIDEO = 2,
DATABLOCK_VENDOR = 3,
DATABLOCK_SPEAKERS = 4,
};
struct img_edid {
bool pref;
int code;
};
struct image_format {
int length;
struct img_edid fmt[HDMI_IMG_FORMAT_MAX_LENGTH];
};
struct audio_edid {
int num_of_ch;
int format;
};
struct audio_format {
int length;
struct audio_edid fmt[HDMI_AUDIO_FORMAT_MAX_LENGTH];
};
struct latency {
int vid_latency; /*Video Latency (if indicated, value=1+ms/2 with a max of 251 meaning 500ms)*/
int aud_latency;
int int_vid_latency;
int int_aud_latency;
};
struct deep_color {
bool bit_30;
bool bit_36;
int max_tmds_freq;
};
/* Video Descriptor Block */
struct HDMI_EDID_DTD_VIDEO {
u16 pixel_clock; /* 54-55 */
u8 horiz_active; /* 56 */
u8 horiz_blanking; /* 57 */
u8 horiz_high; /* 58 */
u8 vert_active; /* 59 */
u8 vert_blanking; /* 60 */
u8 vert_high; /* 61 */
u8 horiz_sync_offset; /* 62 */
u8 horiz_sync_pulse; /* 63 */
u8 vert_sync_pulse; /* 64 */
u8 sync_pulse_high; /* 65 */
u8 horiz_image_size; /* 66 */
u8 vert_image_size; /* 67 */
u8 image_size_high; /* 68 */
u8 horiz_border; /* 69 */
u8 vert_border; /* 70 */
u8 misc_settings; /* 71 */
};
/* Monitor Limits Descriptor Block */
struct HDMI_EDID_DTD_MONITOR {
u16 pixel_clock; /* 54-55*/
u8 _reserved1; /* 56 */
u8 block_type; /* 57 */
u8 _reserved2; /* 58 */
u8 min_vert_freq; /* 59 */
u8 max_vert_freq; /* 60 */
u8 min_horiz_freq; /* 61 */
u8 max_horiz_freq; /* 62 */
u8 pixel_clock_mhz; /* 63 */
u8 GTF[2]; /* 64 -65 */
u8 start_horiz_freq; /* 66 */
u8 C; /* 67 */
u8 M[2]; /* 68-69 */
u8 K; /* 70 */
u8 J; /* 71 */
} __attribute__ ((packed));
/* Text Descriptor Block */
struct HDMI_EDID_DTD_TEXT {
u16 pixel_clock; /* 54-55 */
u8 _reserved1; /* 56 */
u8 block_type; /* 57 */
u8 _reserved2; /* 58 */
u8 text[13]; /* 59-71 */
} __attribute__ ((packed));
/* DTD Union */
union HDMI_EDID_DTD {
struct HDMI_EDID_DTD_VIDEO video;
struct HDMI_EDID_DTD_TEXT monitor_name;
struct HDMI_EDID_DTD_TEXT monitor_serial_number;
struct HDMI_EDID_DTD_TEXT ascii;
struct HDMI_EDID_DTD_MONITOR monitor_limits;
} __attribute__ ((packed));
/* EDID struct */
struct HDMI_EDID {
u8 header[8]; /* 00-07 */
u16 manufacturerID; /* 08-09 */
u16 product_id; /* 10-11 */
u32 serial_number; /* 12-15 */
u8 week_manufactured; /* 16 */
u8 year_manufactured; /* 17 */
u8 edid_version; /* 18 */
u8 edid_revision; /* 19 */
u8 video_in_definition; /* 20 */
u8 max_horiz_image_size; /* 21 */
u8 max_vert_image_size; /* 22 */
u8 display_gamma; /* 23 */
u8 power_features; /* 24 */
u8 chroma_info[10]; /* 25-34 */
u8 timing_1; /* 35 */
u8 timing_2; /* 36 */
u8 timing_3; /* 37 */
u8 std_timings[16]; /* 38-53 */
union HDMI_EDID_DTD DTD[4]; /* 54-125 */
u8 extension_edid; /* 126 */
u8 checksum; /* 127 */
u8 extension_tag; /* 00 (extensions follow EDID) */
u8 extention_rev; /* 01 */
u8 offset_dtd; /* 02 */
u8 num_dtd; /* 03 */
u8 data_block[123]; /* 04 - 126 */
u8 extension_checksum; /* 127 */
u8 ext_datablock[256];
} __attribute__ ((packed));
int get_edid_timing_info(union HDMI_EDID_DTD *edid_dtd,
struct omap_video_timings *timings);
void get_eedid_timing_info(int current_descriptor_addrs, u8 *edid ,
struct omap_video_timings *timings);
int hdmi_get_datablock_offset(u8 *edid, enum extension_edid_db datablock, int *offset);
int hdmi_get_image_format(u8 *edid, struct image_format *format);
int hdmi_get_audio_format(u8 *edid, struct audio_format *format);
void hdmi_get_av_delay(u8 *edid, struct latency *lat);
void hdmi_deep_color_support_info(u8 *edid, struct deep_color *format);
int hdmi_tv_yuv_supported(u8 *edid);
#ifdef __cplusplus
};
#endif
#endif
|
