/* * 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> enum hdmi_quantization_range; struct drm_connector; struct drm_device; struct drm_display_mode; struct drm_edid; struct drm_printer; struct hdmi_avi_infoframe; struct hdmi_vendor_infoframe; struct i2c_adapter; #define EDID_LENGTH 128 #define DDC_ADDR 0x50 #define DDC_ADDR2 0x52 /* E-DDC 1.2 - where DisplayID can hide */ #define CEA_EXT 0x02 #define VTB_EXT 0x10 #define DI_EXT 0x40 #define LS_EXT 0x50 #define MI_EXT 0x60 #define DISPLAYID_EXT 0x70 struct est_timings { u8 t1; u8 t2; u8 mfg_rsvd; } __packed; /* 00=16:10, 01=4:3, 10=5:4, 11=16:9 */ #define EDID_TIMING_ASPECT_SHIFT 6 #define EDID_TIMING_ASPECT_MASK (0x3 << EDID_TIMING_ASPECT_SHIFT) /* need to add 60 */ #define EDID_TIMING_VFREQ_SHIFT 0 #define EDID_TIMING_VFREQ_MASK (0x3f << EDID_TIMING_VFREQ_SHIFT) struct std_timing { u8 hsize; /* need to multiply by 8 then add 248 */ u8 vfreq_aspect; } __packed; #define DRM_EDID_PT_HSYNC_POSITIVE (1 << 1) #define DRM_EDID_PT_VSYNC_POSITIVE (1 << 2) #define DRM_EDID_PT_SEPARATE_SYNC (3 << 3) #define DRM_EDID_PT_STEREO (1 << 5) #define DRM_EDID_PT_INTERLACED (1 << 7) /* If detailed data is pixel timing */ struct detailed_pixel_timing { u8 hactive_lo; u8 hblank_lo; u8 hactive_hblank_hi; u8 vactive_lo; u8 vblank_lo; u8 vactive_vblank_hi; u8 hsync_offset_lo; u8 hsync_pulse_width_lo; u8 vsync_offset_pulse_width_lo; u8 hsync_vsync_offset_pulse_width_hi; u8 width_mm_lo; u8 height_mm_lo; u8 width_height_mm_hi; u8 hborder; u8 vborder; u8 misc; } __packed; /* If it's not pixel timing, it'll be one of the below */ struct detailed_data_string { u8 str[13]; } __packed; #define DRM_EDID_RANGE_OFFSET_MIN_VFREQ (1 << 0) /* 1.4 */ #define DRM_EDID_RANGE_OFFSET_MAX_VFREQ (1 << 1) /* 1.4 */ #define DRM_EDID_RANGE_OFFSET_MIN_HFREQ (1 << 2) /* 1.4 */ #define DRM_EDID_RANGE_OFFSET_MAX_HFREQ (1 << 3) /* 1.4 */ #define DRM_EDID_DEFAULT_GTF_SUPPORT_FLAG 0x00 /* 1.3 */ #define DRM_EDID_RANGE_LIMITS_ONLY_FLAG 0x01 /* 1.4 */ #define DRM_EDID_SECONDARY_GTF_SUPPORT_FLAG 0x02 /* 1.3 */ #define DRM_EDID_CVT_SUPPORT_FLAG 0x04 /* 1.4 */ #define DRM_EDID_CVT_FLAGS_STANDARD_BLANKING (1 << 3) #define DRM_EDID_CVT_FLAGS_REDUCED_BLANKING (1 << 4) 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 */ u8 flags; union { struct { u8 reserved; u8 hfreq_start_khz; /* need to multiply by 2 */ u8 c; /* need to divide by 2 */ __le16 m; u8 k; u8 j; /* need to divide by 2 */ } __packed gtf2; struct { u8 version; u8 data1; /* high 6 bits: extra clock resolution */ u8 data2; /* plus low 2 of above: max hactive */ u8 supported_aspects; u8 flags; /* preferred aspect and blanking support */ u8 supported_scalings; u8 preferred_refresh; } __packed cvt; } __packed formula; } __packed; struct detailed_data_wpindex { u8 white_yx_lo; /* Lower 2 bits each */ u8 white_x_hi; u8 white_y_hi; u8 gamma; /* need to divide by 100 then add 1 */ } __packed; struct detailed_data_color_point { u8 windex1; u8 wpindex1[3]; u8 windex2; u8 wpindex2[3]; } __packed; struct cvt_timing { u8 code[3]; } __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[6]; struct cvt_timing cvt[4]; } __packed data; } __packed; #define EDID_DETAIL_EST_TIMINGS 0xf7 #define EDID_DETAIL_CVT_3BYTE 0xf8 #define EDID_DETAIL_COLOR_MGMT_DATA 0xf9 #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 { __le16 pixel_clock; /* need to multiply by 10 KHz */ union { struct detailed_pixel_timing pixel_data; struct detailed_non_pixel other_data; } __packed data; } __packed; #define DRM_EDID_INPUT_SERRATION_VSYNC (1 << 0) #define DRM_EDID_INPUT_SYNC_ON_GREEN (1 << 1) #define DRM_EDID_INPUT_COMPOSITE_SYNC (1 << 2) #define DRM_EDID_INPUT_SEPARATE_SYNCS (1 << 3) #define DRM_EDID_INPUT_BLANK_TO_BLACK (1 << 4) #define DRM_EDID_INPUT_VIDEO_LEVEL (3 << 5) #define DRM_EDID_INPUT_DIGITAL (1 << 7) #define DRM_EDID_DIGITAL_DEPTH_MASK (7 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_UNDEF (0 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_6 (1 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_8 (2 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_10 (3 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_12 (4 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_14 (5 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_16 (6 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_DEPTH_RSVD (7 << 4) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_MASK (7 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_UNDEF (0 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_DVI (1 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_HDMI_A (2 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_HDMI_B (3 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_MDDI (4 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_TYPE_DP (5 << 0) /* 1.4 */ #define DRM_EDID_DIGITAL_DFP_1_X (1 << 0) /* 1.3 */ #define DRM_EDID_FEATURE_DEFAULT_GTF (1 << 0) /* 1.2 */ #define DRM_EDID_FEATURE_CONTINUOUS_FREQ (1 << 0) /* 1.4 */ #define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 1) #define DRM_EDID_FEATURE_STANDARD_COLOR (1 << 2) /* If analog */ #define DRM_EDID_FEATURE_DISPLAY_TYPE (3 << 3) /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */ /* If digital */ #define DRM_EDID_FEATURE_COLOR_MASK (3 << 3) #define DRM_EDID_FEATURE_RGB (0 << 3) #define DRM_EDID_FEATURE_RGB_YCRCB444 (1 << 3) #define DRM_EDID_FEATURE_RGB_YCRCB422 (2 << 3) #define DRM_EDID_FEATURE_RGB_YCRCB (3 << 3) /* both 4:4:4 and 4:2:2 */ #define DRM_EDID_FEATURE_PM_ACTIVE_OFF (1 << 5) #define DRM_EDID_FEATURE_PM_SUSPEND (1 << 6) #define DRM_EDID_FEATURE_PM_STANDBY (1 << 7) #define DRM_EDID_HDMI_DC_48 (1 << 6) #define DRM_EDID_HDMI_DC_36 (1 << 5) #define DRM_EDID_HDMI_DC_30 (1 << 4) #define DRM_EDID_HDMI_DC_Y444 (1 << 3) /* YCBCR 420 deep color modes */ #define DRM_EDID_YCBCR420_DC_48 (1 << 2) #define DRM_EDID_YCBCR420_DC_36 (1 << 1) #define DRM_EDID_YCBCR420_DC_30 (1 << 0) #define DRM_EDID_YCBCR420_DC_MASK (DRM_EDID_YCBCR420_DC_48 | \ DRM_EDID_YCBCR420_DC_36 | \ DRM_EDID_YCBCR420_DC_30) /* HDMI 2.1 additional fields */ #define DRM_EDID_MAX_FRL_RATE_MASK 0xf0 #define DRM_EDID_FAPA_START_LOCATION (1 << 0) #define DRM_EDID_ALLM (1 << 1) #define DRM_EDID_FVA (1 << 2) /* Deep Color specific */ #define DRM_EDID_DC_30BIT_420 (1 << 0) #define DRM_EDID_DC_36BIT_420 (1 << 1) #define DRM_EDID_DC_48BIT_420 (1 << 2) /* VRR specific */ #define DRM_EDID_CNMVRR (1 << 3) #define DRM_EDID_CINEMA_VRR (1 << 4) #define DRM_EDID_MDELTA (1 << 5) #define DRM_EDID_VRR_MAX_UPPER_MASK 0xc0 #define DRM_EDID_VRR_MAX_LOWER_MASK 0xff #define DRM_EDID_VRR_MIN_MASK 0x3f /* DSC specific */ #define DRM_EDID_DSC_10BPC (1 << 0) #define DRM_EDID_DSC_12BPC (1 << 1) #define DRM_EDID_DSC_16BPC (1 << 2) #define DRM_EDID_DSC_ALL_BPP (1 << 3) #define DRM_EDID_DSC_NATIVE_420 (1 << 6) #define DRM_EDID_DSC_1P2 (1 << 7) #define DRM_EDID_DSC_MAX_FRL_RATE_MASK 0xf0 #define DRM_EDID_DSC_MAX_SLICES 0xf #define DRM_EDID_DSC_TOTAL_CHUNK_KBYTES 0x3f struct drm_edid_product_id { __be16 manufacturer_name; __le16 product_code; __le32 serial_number; u8 week_of_manufacture; u8 year_of_manufacture; } __packed; struct edid { u8 header[8]; /* Vendor & product info */ union { struct drm_edid_product_id product_id; struct { u8 mfg_id[2]; u8 prod_code[2]; u32 serial; /* FIXME: byte order */ u8 mfg_week; u8 mfg_year; } __packed; } __packed; /* EDID version */ u8 version; u8 revision; /* Display info: */ u8 input; u8 width_cm; u8 height_cm; u8 gamma; u8 features; /* Color characteristics */ u8 red_green_lo; u8 blue_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; } __packed; /* EDID matching */ struct drm_edid_ident { /* ID encoded by drm_edid_encode_panel_id() */ u32 panel_id; const char *name; }; #define EDID_PRODUCT_ID(e) ((e)->prod_code[0] | ((e)->prod_code[1] << 8)) /* Short Audio Descriptor */ struct cea_sad { u8 format; u8 channels; /* max number of channels - 1 */ u8 freq; u8 byte2; /* meaning depends on format */ }; int drm_edid_to_sad(const struct edid *edid, struct cea_sad **sads); int drm_edid_to_speaker_allocation(const struct edid *edid, u8 **sadb); int drm_av_sync_delay(struct drm_connector *connector, const struct drm_display_mode *mode); int drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, const struct drm_connector *connector, const struct drm_display_mode *mode); int drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, const struct drm_connector *connector, const struct drm_display_mode *mode); void drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, const struct drm_connector *connector, const struct drm_display_mode *mode, enum hdmi_quantization_range rgb_quant_range); /** * drm_edid_decode_mfg_id - Decode the manufacturer ID * @mfg_id: The manufacturer ID * @vend: A 4-byte buffer to store the 3-letter vendor string plus a '\0' * termination */ static inline const char *drm_edid_decode_mfg_id(u16 mfg_id, char vend[4]) { vend[0] = '@' + ((mfg_id >> 10) & 0x1f); vend[1] = '@' + ((mfg_id >> 5) & 0x1f); vend[2] = '@' + ((mfg_id >> 0) & 0x1f); vend[3] = '\0'; return vend; } /** * drm_edid_encode_panel_id - Encode an ID for matching against drm_edid_get_panel_id() * @vend_chr_0: First character of the vendor string. * @vend_chr_1: Second character of the vendor string. * @vend_chr_2: Third character of the vendor string. * @product_id: The 16-bit product ID. * * This is a macro so that it can be calculated at compile time and used * as an initializer. * * For instance: * drm_edid_encode_panel_id('B', 'O', 'E', 0x2d08) => 0x09e52d08 * * Return: a 32-bit ID per panel. */ #define drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, product_id) \ ((((u32)(vend_chr_0) - '@') & 0x1f) << 26 | \ (((u32)(vend_chr_1) - '@') & 0x1f) << 21 | \ (((u32)(vend_chr_2) - '@') & 0x1f) << 16 | \ ((product_id) & 0xffff)) /** * drm_edid_decode_panel_id - Decode a panel ID from drm_edid_encode_panel_id() * @panel_id: The panel ID to decode. * @vend: A 4-byte buffer to store the 3-letter vendor string plus a '\0' * termination * @product_id: The product ID will be returned here. * * For instance, after: * drm_edid_decode_panel_id(0x09e52d08, vend, &product_id) * These will be true: * vend[0] = 'B' * vend[1] = 'O' * vend[2] = 'E' * vend[3] = '\0' * product_id = 0x2d08 */ static inline void drm_edid_decode_panel_id(u32 panel_id, char vend[4], u16 *product_id) { *product_id = (u16)(panel_id & 0xffff); drm_edid_decode_mfg_id(panel_id >> 16, vend); } bool drm_probe_ddc(struct i2c_adapter *adapter); struct edid *drm_do_get_edid(struct drm_connector *connector, int (*get_edid_block)(void *data, u8 *buf, unsigned int block, size_t len), void *data); struct edid *drm_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter); struct edid *drm_get_edid_switcheroo(struct drm_connector *connector, struct i2c_adapter *adapter); struct edid *drm_edid_duplicate(const struct edid *edid); int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid); int drm_edid_override_connector_update(struct drm_connector *connector); u8 drm_match_cea_mode(const struct drm_display_mode *to_match); bool drm_detect_hdmi_monitor(const struct edid *edid); bool drm_detect_monitor_audio(const struct edid *edid); enum hdmi_quantization_range drm_default_rgb_quant_range(const struct drm_display_mode *mode); int drm_add_modes_noedid(struct drm_connector *connector, int hdisplay, int vdisplay); int drm_edid_header_is_valid(const void *edid); bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid, bool *edid_corrupt); bool drm_edid_is_valid(struct edid *edid); void drm_edid_get_monitor_name(const struct edid *edid, char *name, int buflen); struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, int hsize, int vsize, int fresh, bool rb); struct drm_display_mode * drm_display_mode_from_cea_vic(struct drm_device *dev, u8 video_code); /* Interface based on struct drm_edid */ const struct drm_edid *drm_edid_alloc(const void *edid, size_t size); const struct drm_edid *drm_edid_dup(const struct drm_edid *drm_edid); void drm_edid_free(const struct drm_edid *drm_edid); bool drm_edid_valid(const struct drm_edid *drm_edid); const struct edid *drm_edid_raw(const struct drm_edid *drm_edid); const struct drm_edid *drm_edid_read(struct drm_connector *connector); const struct drm_edid *drm_edid_read_ddc(struct drm_connector *connector, struct i2c_adapter *adapter); const struct drm_edid *drm_edid_read_custom(struct drm_connector *connector, int (*read_block)(void *context, u8 *buf, unsigned int block, size_t len), void *context); const struct drm_edid *drm_edid_read_base_block(struct i2c_adapter *adapter); const struct drm_edid *drm_edid_read_switcheroo(struct drm_connector *connector, struct i2c_adapter *adapter); int drm_edid_connector_update(struct drm_connector *connector, const struct drm_edid *edid); int drm_edid_connector_add_modes(struct drm_connector *connector); bool drm_edid_is_digital(const struct drm_edid *drm_edid); void drm_edid_get_product_id(const struct drm_edid *drm_edid, struct drm_edid_product_id *id); void drm_edid_print_product_id(struct drm_printer *p, const struct drm_edid_product_id *id, bool raw); u32 drm_edid_get_panel_id(const struct drm_edid *drm_edid); bool drm_edid_match(const struct drm_edid *drm_edid, const struct drm_edid_ident *ident); #endif /* __DRM_EDID_H__ */