/* SPDX-License-Identifier: GPL-2.0-only */ #include #include struct edid_raw { uint8_t header[8]; /* Display product identification */ uint16_t manufacturer_id; uint16_t product_code; uint32_t serial_number; uint8_t manufacture_week; uint8_t manufacture_year; /* EDID version information */ uint8_t edid_version; uint8_t edid_revision; /* Basic display parameters */ uint8_t video_input_type; uint8_t horizontal_size; /* [cm] */ uint8_t vertical_size; /* [cm] */ uint8_t display_gamma; uint8_t supported_features; /* Color space definition */ uint8_t color_characteristics[10]; /* Timing information */ uint8_t established_supported_timings[2]; uint8_t manufacturers_reserved_timing; uint8_t standard_timings_supported[16]; uint8_t descriptor_block_1[18]; uint8_t descriptor_block_2[18]; uint8_t descriptor_block_3[18]; uint8_t descriptor_block_4[18]; /* Number of optional 128-byte extension blocks */ uint8_t extension_flag; uint8_t checksum; } __packed; _Static_assert(sizeof(struct edid_raw) == 128, "assert failed: edid_raw size mismatch"); #define EDID_HEADER_RAW { 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00 } #define EDID_HEADER_INVALID_RAW { 0, 0, 0, 0, 0, 0, 0, 0 } #define EDID_MANUFACTURER_ID 0xcb55 #define EDID_MANUFACTURER_NAME "UNK" #define EDID_PRODUCT_CODE 0x1234 #define EDID_SERIAL_NUMBER 0x56789ABC #define EDID_MANUFACTURE_WEEK 23u #define EDID_MANUFACTURE_NO_WEEK 0u #define EDID_MANUFACTURE_YEAR (2015u - 1990u) /* Video Input Definition for Analog Video Signal Interface */ #define EDID_ANALOG_VSI (0u << 7) #define EDID_SIGNAL_LEVEL_0 0u #define EDID_SIGNAL_LEVEL_1 (1u << 5) #define EDID_SIGNAL_LEVEL_2 (2u << 5) #define EDID_SIGNAL_LEVEL_3 (3u << 5) #define EDID_VIDEO_SETUP_BLANK_EQ_BLACK 0u #define EDID_VIDEO_SETUP_BLANK_TO_BLACK (1u << 4) #define EDID_SEPARATE_SYNC_H_AND_V(v) ((v != 0 ? 0x1 : 0x0) << 3) #define EDID_COMPOSITE_SYNC_H(v) ((v != 0 ? 0x1 : 0x0) << 2) #define EDID_COMPOSITE_SYNC_ON_GREEN(v) ((v != 0 ? 0x1 : 0x0) << 1) #define EDID_SERRATION_VSYNC(v) (v != 0 ? 0x1 : 0x0) /* Video Input Definition for Digital Video Signal Interface */ #define EDID_DIGITAL_VSI (1u << 7) #define EDID_COLOR_BIT_DEPTH_UNDEFINED 0u #define EDID_COLOR_BIT_DEPTH_6B (1u << 4) #define EDID_COLOR_BIT_DEPTH_8B (2u << 4) #define EDID_COLOR_BIT_DEPTH_10B (3u << 4) #define EDID_COLOR_BIT_DEPTH_12B (4u << 4) #define EDID_COLOR_BIT_DEPTH_14B (5u << 4) #define EDID_COLOR_BIT_DEPTH_16B (6u << 4) #define EDID_INTERFACE_UNDEFINED 0u #define EDID_INTERFACE_DVI 1u #define EDID_INTERFACE_HDMI_A 2u #define EDID_INTERFACE_HDMI_B 3u #define EDID_INTERFACE_MDDI 4u #define EDID_INTERFACE_DP 5u /* BEGIN Supported features */ #define EDID_STANDBY_MODE(v) ((v != 0 ? 0x1 : 0x0) << 7) #define EDID_SUSPEND_MODE(v) ((v != 0 ? 0x1 : 0x0) << 6) #define EDID_ACTIVE_OFF(v) ((v != 0 ? 0x1 : 0x0) << 5) /* For analog interface */ #define EDID_COLOR_TYPE_MONO 0u #define EDID_COLOR_TYPE_RGB (1u << 3) #define EDID_COLOR_TYPE_NON_RGB (2u << 3) #define EDID_COLOR_TYPE_UNDEFINED (3u << 3) /* For digital interface */ #define EDID_COLOR_FORMAT_RGB444 0u #define EDID_COLOR_FORMAT_RGB444_YCRCB444 (1u << 3) #define EDID_COLOR_FORMAT_RGB444_YCRCB422 (2u << 3) #define EDID_COLOR_FORMAT_RGB444_YCRCB422_YCRCB422 (3u << 3) #define EDID_SRGB_SUPPORTED(v) (((v) == 0 ? 0u : 1u) << 2) #define EDID_PREFERRED_TIMING_EXTENDED_INFO (1u << 1) #define EDID_PREFERRED_TIMING_NO_EXTENDED_INFO 0u #define EDID_DISPLAY_FREQUENCY_CONTINUOUS 1u #define EDID_DISPLAY_FREQUENCY_NON_CONTINUOUS 0u /* END Supported features */ /* Red X 0.640 */ #define EDID_COLOR_R_X 0x25 /* Red Y 0.330 */ #define EDID_COLOR_R_Y 0x152 /* Green X 0.300 */ #define EDID_COLOR_G_X 0x13a /* Green Y 0.600 */ #define EDID_COLOR_G_Y 0x267 /* Blue X 0.150 */ #define EDID_COLOR_B_X 0x9a /* Blue Y 0.060 */ #define EDID_COLOR_B_Y 0x3e /* White X 0.3125 */ #define EDID_COLOR_W_X 0xa /* White Y 0.3291 */ #define EDID_COLOR_W_Y 0x22a /* 1 and 0 bits of each color */ #define EDID_COLOR_R_X10_Y10 (((EDID_COLOR_R_X & 0x3) << 2) | (EDID_COLOR_R_Y & 0x3)) #define EDID_COLOR_G_X10_Y10 (((EDID_COLOR_G_X & 0x3) << 2) | (EDID_COLOR_G_Y & 0x3)) #define EDID_COLOR_B_X10_Y10 (((EDID_COLOR_B_X & 0x3) << 2) | (EDID_COLOR_B_Y & 0x3)) #define EDID_COLOR_W_X10_Y10 (((EDID_COLOR_W_X & 0x3) << 2) | (EDID_COLOR_W_Y & 0x3)) /* Concatenated 0 and 1 bits of each color. To be put * as first and second byte of color characteristic. */ #define EDID_COLOR_RG_XY ((EDID_COLOR_R_X10_Y10 << 4) | EDID_COLOR_G_X10_Y10) #define EDID_COLOR_BW_XY ((EDID_COLOR_B_X10_Y10 << 4) | EDID_COLOR_W_X10_Y10) /* Bits 9 through 2 of each color */ #define EDID_COLOR_R_X92 (EDID_COLOR_R_X >> 2) #define EDID_COLOR_R_Y92 (EDID_COLOR_R_Y >> 2) #define EDID_COLOR_G_X92 (EDID_COLOR_G_X >> 2) #define EDID_COLOR_G_Y92 (EDID_COLOR_G_Y >> 2) #define EDID_COLOR_B_X92 (EDID_COLOR_B_X >> 2) #define EDID_COLOR_B_Y92 (EDID_COLOR_B_Y >> 2) #define EDID_COLOR_W_X92 (EDID_COLOR_W_X >> 2) #define EDID_COLOR_W_Y92 (EDID_COLOR_W_Y >> 2) #define EDID_ESTABLISHED_TIMINGS_1_800x600_60Hz 1u #define EDID_ESTABLISHED_TIMINGS_1_800x600_56Hz (1u << 1) #define EDID_ESTABLISHED_TIMINGS_1_640x480_75Hz (1u << 2) #define EDID_ESTABLISHED_TIMINGS_1_640x480_72Hz (1u << 3) #define EDID_ESTABLISHED_TIMINGS_1_640x480_67Hz (1u << 4) #define EDID_ESTABLISHED_TIMINGS_1_640x480_60Hz (1u << 5) #define EDID_ESTABLISHED_TIMINGS_1_720x400_88Hz (1u << 6) #define EDID_ESTABLISHED_TIMINGS_1_720x400_70Hz (1u << 7) #define EDID_ESTABLISHED_TIMINGS_2_1280x1024_75Hz 1u #define EDID_ESTABLISHED_TIMINGS_2_1024x768_75Hz (1u << 1) #define EDID_ESTABLISHED_TIMINGS_2_1024x768_70Hz (1u << 2) #define EDID_ESTABLISHED_TIMINGS_2_1024x768_60Hz (1u << 3) #define EDID_ESTABLISHED_TIMINGS_2_1024x768_80HzI (1u << 4) #define EDID_ESTABLISHED_TIMINGS_2_832x624_75Hz (1u << 5) #define EDID_ESTABLISHED_TIMINGS_2_800x600_75Hz (1u << 6) #define EDID_ESTABLISHED_TIMINGS_2_800x600_72Hz (1u << 7) #define EDID_MANUFACTURERS_TIMINGS_1152x870_75Hz (1u << 7) #define EDID_HORIZONTAL_ACCESSIBLE_PIXELS(px) (((px) / 8 - 31) & 0xFF) #define EDID_ASPECT_RATIO_16_10 0u #define EDID_ASPECT_RATIO_4_3 (1u << 6) #define EDID_ASPECT_RATIO_5_4 (2u << 6) #define EDID_ASPECT_RATIO_16_9 (3u << 6) #define EDID_FIELD_REFRESH_RATE(hz) (((hz) - 60) & 0x1f) #define EDID_PIXEL_CLOCK(v) (((v) / 10000) & 0xFFFF) #define EDID_RAW_DEFAULT_PARAMS .header = EDID_HEADER_RAW, \ .edid_version = 1, \ .edid_revision = 4, \ .manufacturer_id = EDID_MANUFACTURER_ID, \ .product_code = EDID_PRODUCT_CODE, \ .serial_number = EDID_SERIAL_NUMBER, \ .manufacture_week = EDID_MANUFACTURE_NO_WEEK, \ .manufacture_year = EDID_MANUFACTURE_YEAR, \ .color_characteristics = { \ EDID_COLOR_RG_XY, \ EDID_COLOR_BW_XY, \ EDID_COLOR_R_X92, \ EDID_COLOR_R_Y92, \ EDID_COLOR_G_X92, \ EDID_COLOR_G_Y92, \ EDID_COLOR_B_X92, \ EDID_COLOR_B_Y92, \ EDID_COLOR_W_X92, \ EDID_COLOR_W_Y92, \ }