/* * Copyright © 2007-2008 Intel Corporation * Jesse Barnes <jesse.barnes@intel.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #ifndef __DRM_EDID_H__ #define __DRM_EDID_H__ #include <linux/types.h> #define EDID_LENGTH 128 #define DDC_ADDR 0x50 #ifdef BIG_ENDIAN #error "EDID structure is little endian, need big endian versions" #else struct est_timings { u8 t1; u8 t2; u8 mfg_rsvd; } __attribute__((packed)); struct std_timing { u8 hsize; /* need to multiply by 8 then add 248 */ u8 vfreq:6; /* need to add 60 */ u8 aspect_ratio:2; /* 00=16:10, 01=4:3, 10=5:4, 11=16:9 */ } __attribute__((packed)); /* If detailed data is pixel timing */ struct detailed_pixel_timing { u8 hactive_lo; u8 hblank_lo; u8 hblank_hi:4; u8 hactive_hi:4; u8 vactive_lo; u8 vblank_lo; u8 vblank_hi:4; u8 vactive_hi:4; u8 hsync_offset_lo; u8 hsync_pulse_width_lo; u8 vsync_pulse_width_lo:4; u8 vsync_offset_lo:4; u8 vsync_pulse_width_hi:2; u8 vsync_offset_hi:2; u8 hsync_pulse_width_hi:2; u8 hsync_offset_hi:2; u8 width_mm_lo; u8 height_mm_lo; u8 height_mm_hi:4; u8 width_mm_hi:4; u8 hborder; u8 vborder; u8 unknown0:1; u8 hsync_positive:1; u8 vsync_positive:1; u8 separate_sync:2; u8 stereo:1; u8 unknown6:1; u8 interlaced:1; } __attribute__((packed)); /* If it's not pixel timing, it'll be one of the below */ struct detailed_data_string { u8 str[13]; } __attribute__((packed)); struct detailed_data_monitor_range { u8 min_vfreq; u8 max_vfreq; u8 min_hfreq_khz; u8 max_hfreq_khz; u8 pixel_clock_mhz; /* need to multiply by 10 */ u16 sec_gtf_toggle; /* A000=use above, 20=use below */ /* FIXME: byte order */ u8 hfreq_start_khz; /* need to multiply by 2 */ u8 c; /* need to divide by 2 */ u16 m; /* FIXME: byte order */ u8 k; u8 j; /* need to divide by 2 */ } __attribute__((packed)); struct detailed_data_wpindex { u8 white_y_lo:2; u8 white_x_lo:2; u8 pad:4; u8 white_x_hi; u8 white_y_hi; u8 gamma; /* need to divide by 100 then add 1 */ } __attribute__((packed)); struct detailed_data_color_point { u8 windex1; u8 wpindex1[3]; u8 windex2; u8 wpindex2[3]; } __attribute__((packed)); struct detailed_non_pixel { u8 pad1; u8 type; /* ff=serial, fe=string, fd=monitor range, fc=monitor name fb=color point data, fa=standard timing data, f9=undefined, f8=mfg. reserved */ u8 pad2; union { struct detailed_data_string str; struct detailed_data_monitor_range range; struct detailed_data_wpindex color; struct std_timing timings[5]; } data; } __attribute__((packed)); #define EDID_DETAIL_STD_MODES 0xfa #define EDID_DETAIL_MONITOR_CPDATA 0xfb #define EDID_DETAIL_MONITOR_NAME 0xfc #define EDID_DETAIL_MONITOR_RANGE 0xfd #define EDID_DETAIL_MONITOR_STRING 0xfe #define EDID_DETAIL_MONITOR_SERIAL 0xff struct detailed_timing { u16 pixel_clock; /* need to multiply by 10 KHz */ /* FIXME: byte order */ union { struct detailed_pixel_timing pixel_data; struct detailed_non_pixel other_data; } data; } __attribute__((packed)); struct edid { u8 header[8]; /* Vendor & product info */ u8 mfg_id[2]; u8 prod_code[2]; u32 serial; /* FIXME: byte order */ u8 mfg_week; u8 mfg_year; /* EDID version */ u8 version; u8 revision; /* Display info: */ /* input definition */ u8 serration_vsync:1; u8 sync_on_green:1; u8 composite_sync:1; u8 separate_syncs:1; u8 blank_to_black:1; u8 video_level:2; u8 digital:1; /* bits below must be zero if set */ u8 width_cm; u8 height_cm; u8 gamma; /* feature support */ u8 default_gtf:1; u8 preferred_timing:1; u8 standard_color:1; u8 display_type:2; /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */ u8 pm_active_off:1; u8 pm_suspend:1; u8 pm_standby:1; /* Color characteristics */ u8 red_green_lo; u8 black_white_lo; u8 red_x; u8 red_y; u8 green_x; u8 green_y; u8 blue_x; u8 blue_y; u8 white_x; u8 white_y; /* Est. timings and mfg rsvd timings*/ struct est_timings established_timings; /* Standard timings 1-8*/ struct std_timing standard_timings[8]; /* Detailing timings 1-4 */ struct detailed_timing detailed_timings[4]; /* Number of 128 byte ext. blocks */ u8 extensions; /* Checksum */ u8 checksum; } __attribute__((packed)); #endif /* little endian structs */ #define EDID_PRODUCT_ID(e) ((e)->prod_code[0] | ((e)->prod_code[1] << 8)) #endif /* __DRM_EDID_H__ */