1 /* 2 * Copyright © 2007-2008 Intel Corporation 3 * Jesse Barnes <jesse.barnes@intel.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * $FreeBSD$ 24 */ 25 #ifndef __DRM_EDID_H__ 26 #define __DRM_EDID_H__ 27 28 #include <sys/types.h> 29 #include <dev/drm2/drmP.h> 30 31 #define EDID_LENGTH 128 32 #define DDC_ADDR 0x50 33 34 #define CEA_EXT 0x02 35 #define VTB_EXT 0x10 36 #define DI_EXT 0x40 37 #define LS_EXT 0x50 38 #define MI_EXT 0x60 39 40 struct est_timings { 41 u8 t1; 42 u8 t2; 43 u8 mfg_rsvd; 44 } __attribute__((packed)); 45 46 /* 00=16:10, 01=4:3, 10=5:4, 11=16:9 */ 47 #define EDID_TIMING_ASPECT_SHIFT 6 48 #define EDID_TIMING_ASPECT_MASK (0x3 << EDID_TIMING_ASPECT_SHIFT) 49 50 /* need to add 60 */ 51 #define EDID_TIMING_VFREQ_SHIFT 0 52 #define EDID_TIMING_VFREQ_MASK (0x3f << EDID_TIMING_VFREQ_SHIFT) 53 54 struct std_timing { 55 u8 hsize; /* need to multiply by 8 then add 248 */ 56 u8 vfreq_aspect; 57 } __attribute__((packed)); 58 59 #define DRM_EDID_PT_HSYNC_POSITIVE (1 << 1) 60 #define DRM_EDID_PT_VSYNC_POSITIVE (1 << 2) 61 #define DRM_EDID_PT_SEPARATE_SYNC (3 << 3) 62 #define DRM_EDID_PT_STEREO (1 << 5) 63 #define DRM_EDID_PT_INTERLACED (1 << 7) 64 65 /* If detailed data is pixel timing */ 66 struct detailed_pixel_timing { 67 u8 hactive_lo; 68 u8 hblank_lo; 69 u8 hactive_hblank_hi; 70 u8 vactive_lo; 71 u8 vblank_lo; 72 u8 vactive_vblank_hi; 73 u8 hsync_offset_lo; 74 u8 hsync_pulse_width_lo; 75 u8 vsync_offset_pulse_width_lo; 76 u8 hsync_vsync_offset_pulse_width_hi; 77 u8 width_mm_lo; 78 u8 height_mm_lo; 79 u8 width_height_mm_hi; 80 u8 hborder; 81 u8 vborder; 82 u8 misc; 83 } __attribute__((packed)); 84 85 /* If it's not pixel timing, it'll be one of the below */ 86 struct detailed_data_string { 87 u8 str[13]; 88 } __attribute__((packed)); 89 90 struct detailed_data_monitor_range { 91 u8 min_vfreq; 92 u8 max_vfreq; 93 u8 min_hfreq_khz; 94 u8 max_hfreq_khz; 95 u8 pixel_clock_mhz; /* need to multiply by 10 */ 96 u16 sec_gtf_toggle; /* A000=use above, 20=use below */ 97 u8 hfreq_start_khz; /* need to multiply by 2 */ 98 u8 c; /* need to divide by 2 */ 99 u16 m; 100 u8 k; 101 u8 j; /* need to divide by 2 */ 102 } __attribute__((packed)); 103 104 struct detailed_data_wpindex { 105 u8 white_yx_lo; /* Lower 2 bits each */ 106 u8 white_x_hi; 107 u8 white_y_hi; 108 u8 gamma; /* need to divide by 100 then add 1 */ 109 } __attribute__((packed)); 110 111 struct detailed_data_color_point { 112 u8 windex1; 113 u8 wpindex1[3]; 114 u8 windex2; 115 u8 wpindex2[3]; 116 } __attribute__((packed)); 117 118 struct cvt_timing { 119 u8 code[3]; 120 } __attribute__((packed)); 121 122 struct detailed_non_pixel { 123 u8 pad1; 124 u8 type; /* ff=serial, fe=string, fd=monitor range, fc=monitor name 125 fb=color point data, fa=standard timing data, 126 f9=undefined, f8=mfg. reserved */ 127 u8 pad2; 128 union { 129 struct detailed_data_string str; 130 struct detailed_data_monitor_range range; 131 struct detailed_data_wpindex color; 132 struct std_timing timings[6]; 133 struct cvt_timing cvt[4]; 134 } data; 135 } __attribute__((packed)); 136 137 #define EDID_DETAIL_EST_TIMINGS 0xf7 138 #define EDID_DETAIL_CVT_3BYTE 0xf8 139 #define EDID_DETAIL_COLOR_MGMT_DATA 0xf9 140 #define EDID_DETAIL_STD_MODES 0xfa 141 #define EDID_DETAIL_MONITOR_CPDATA 0xfb 142 #define EDID_DETAIL_MONITOR_NAME 0xfc 143 #define EDID_DETAIL_MONITOR_RANGE 0xfd 144 #define EDID_DETAIL_MONITOR_STRING 0xfe 145 #define EDID_DETAIL_MONITOR_SERIAL 0xff 146 147 struct detailed_timing { 148 u16 pixel_clock; /* need to multiply by 10 KHz */ 149 union { 150 struct detailed_pixel_timing pixel_data; 151 struct detailed_non_pixel other_data; 152 } data; 153 } __attribute__((packed)); 154 155 #define DRM_EDID_INPUT_SERRATION_VSYNC (1 << 0) 156 #define DRM_EDID_INPUT_SYNC_ON_GREEN (1 << 1) 157 #define DRM_EDID_INPUT_COMPOSITE_SYNC (1 << 2) 158 #define DRM_EDID_INPUT_SEPARATE_SYNCS (1 << 3) 159 #define DRM_EDID_INPUT_BLANK_TO_BLACK (1 << 4) 160 #define DRM_EDID_INPUT_VIDEO_LEVEL (3 << 5) 161 #define DRM_EDID_INPUT_DIGITAL (1 << 7) 162 #define DRM_EDID_DIGITAL_DEPTH_MASK (7 << 4) 163 #define DRM_EDID_DIGITAL_DEPTH_UNDEF (0 << 4) 164 #define DRM_EDID_DIGITAL_DEPTH_6 (1 << 4) 165 #define DRM_EDID_DIGITAL_DEPTH_8 (2 << 4) 166 #define DRM_EDID_DIGITAL_DEPTH_10 (3 << 4) 167 #define DRM_EDID_DIGITAL_DEPTH_12 (4 << 4) 168 #define DRM_EDID_DIGITAL_DEPTH_14 (5 << 4) 169 #define DRM_EDID_DIGITAL_DEPTH_16 (6 << 4) 170 #define DRM_EDID_DIGITAL_DEPTH_RSVD (7 << 4) 171 #define DRM_EDID_DIGITAL_TYPE_UNDEF (0) 172 #define DRM_EDID_DIGITAL_TYPE_DVI (1) 173 #define DRM_EDID_DIGITAL_TYPE_HDMI_A (2) 174 #define DRM_EDID_DIGITAL_TYPE_HDMI_B (3) 175 #define DRM_EDID_DIGITAL_TYPE_MDDI (4) 176 #define DRM_EDID_DIGITAL_TYPE_DP (5) 177 178 #define DRM_EDID_FEATURE_DEFAULT_GTF (1 << 0) 179 #define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 1) 180 #define DRM_EDID_FEATURE_STANDARD_COLOR (1 << 2) 181 #define DRM_EDID_FEATURE_DISPLAY_TYPE (3 << 3) /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */ 182 /* If digital */ 183 #define DRM_EDID_FEATURE_COLOR_MASK (3 << 3) 184 #define DRM_EDID_FEATURE_RGB (0 << 3) 185 #define DRM_EDID_FEATURE_RGB_YCRCB444 (1 << 3) 186 #define DRM_EDID_FEATURE_RGB_YCRCB422 (2 << 3) 187 #define DRM_EDID_FEATURE_RGB_YCRCB (3 << 3) /* both 4:4:4 and 4:2:2 */ 188 189 #define DRM_EDID_FEATURE_PM_ACTIVE_OFF (1 << 5) 190 #define DRM_EDID_FEATURE_PM_SUSPEND (1 << 6) 191 #define DRM_EDID_FEATURE_PM_STANDBY (1 << 7) 192 193 struct edid { 194 u8 header[8]; 195 /* Vendor & product info */ 196 u8 mfg_id[2]; 197 u8 prod_code[2]; 198 u32 serial; /* FIXME: byte order */ 199 u8 mfg_week; 200 u8 mfg_year; 201 /* EDID version */ 202 u8 version; 203 u8 revision; 204 /* Display info: */ 205 u8 input; 206 u8 width_cm; 207 u8 height_cm; 208 u8 gamma; 209 u8 features; 210 /* Color characteristics */ 211 u8 red_green_lo; 212 u8 black_white_lo; 213 u8 red_x; 214 u8 red_y; 215 u8 green_x; 216 u8 green_y; 217 u8 blue_x; 218 u8 blue_y; 219 u8 white_x; 220 u8 white_y; 221 /* Est. timings and mfg rsvd timings*/ 222 struct est_timings established_timings; 223 /* Standard timings 1-8*/ 224 struct std_timing standard_timings[8]; 225 /* Detailing timings 1-4 */ 226 struct detailed_timing detailed_timings[4]; 227 /* Number of 128 byte ext. blocks */ 228 u8 extensions; 229 /* Checksum */ 230 u8 checksum; 231 } __attribute__((packed)); 232 233 #define EDID_PRODUCT_ID(e) ((e)->prod_code[0] | ((e)->prod_code[1] << 8)) 234 235 struct drm_encoder; 236 struct drm_connector; 237 struct drm_display_mode; 238 void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid); 239 int drm_av_sync_delay(struct drm_connector *connector, 240 struct drm_display_mode *mode); 241 struct drm_connector *drm_select_eld(struct drm_encoder *encoder, 242 struct drm_display_mode *mode); 243 244 #endif /* __DRM_EDID_H__ */ 245