118e26a6dSFrançois Tigeot /* 218e26a6dSFrançois Tigeot * Copyright © 2008 Keith Packard 318e26a6dSFrançois Tigeot * 418e26a6dSFrançois Tigeot * Permission to use, copy, modify, distribute, and sell this software and its 518e26a6dSFrançois Tigeot * documentation for any purpose is hereby granted without fee, provided that 618e26a6dSFrançois Tigeot * the above copyright notice appear in all copies and that both that copyright 718e26a6dSFrançois Tigeot * notice and this permission notice appear in supporting documentation, and 818e26a6dSFrançois Tigeot * that the name of the copyright holders not be used in advertising or 918e26a6dSFrançois Tigeot * publicity pertaining to distribution of the software without specific, 1018e26a6dSFrançois Tigeot * written prior permission. The copyright holders make no representations 1118e26a6dSFrançois Tigeot * about the suitability of this software for any purpose. It is provided "as 1218e26a6dSFrançois Tigeot * is" without express or implied warranty. 1318e26a6dSFrançois Tigeot * 1418e26a6dSFrançois Tigeot * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 1518e26a6dSFrançois Tigeot * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 1618e26a6dSFrançois Tigeot * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 1718e26a6dSFrançois Tigeot * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 1818e26a6dSFrançois Tigeot * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 1918e26a6dSFrançois Tigeot * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 2018e26a6dSFrançois Tigeot * OF THIS SOFTWARE. 2118e26a6dSFrançois Tigeot */ 2218e26a6dSFrançois Tigeot 2318e26a6dSFrançois Tigeot #ifndef _DRM_DP_HELPER_H_ 2418e26a6dSFrançois Tigeot #define _DRM_DP_HELPER_H_ 2518e26a6dSFrançois Tigeot 26*19df918dSFrançois Tigeot #include <linux/delay.h> 27*19df918dSFrançois Tigeot 2818e26a6dSFrançois Tigeot /* 2918e26a6dSFrançois Tigeot * Unless otherwise noted, all values are from the DP 1.1a spec. Note that 3018e26a6dSFrançois Tigeot * DP and DPCD versions are independent. Differences from 1.0 are not noted, 3118e26a6dSFrançois Tigeot * 1.0 devices basically don't exist in the wild. 3218e26a6dSFrançois Tigeot * 3318e26a6dSFrançois Tigeot * Abbreviations, in chronological order: 3418e26a6dSFrançois Tigeot * 3518e26a6dSFrançois Tigeot * eDP: Embedded DisplayPort version 1 3618e26a6dSFrançois Tigeot * DPI: DisplayPort Interoperability Guideline v1.1a 3718e26a6dSFrançois Tigeot * 1.2: DisplayPort 1.2 3818e26a6dSFrançois Tigeot * 3918e26a6dSFrançois Tigeot * 1.2 formally includes both eDP and DPI definitions. 4018e26a6dSFrançois Tigeot */ 4118e26a6dSFrançois Tigeot 4218e26a6dSFrançois Tigeot #define AUX_NATIVE_WRITE 0x8 4318e26a6dSFrançois Tigeot #define AUX_NATIVE_READ 0x9 4418e26a6dSFrançois Tigeot #define AUX_I2C_WRITE 0x0 4518e26a6dSFrançois Tigeot #define AUX_I2C_READ 0x1 4618e26a6dSFrançois Tigeot #define AUX_I2C_STATUS 0x2 4718e26a6dSFrançois Tigeot #define AUX_I2C_MOT 0x4 4818e26a6dSFrançois Tigeot 4918e26a6dSFrançois Tigeot #define AUX_NATIVE_REPLY_ACK (0x0 << 4) 5018e26a6dSFrançois Tigeot #define AUX_NATIVE_REPLY_NACK (0x1 << 4) 5118e26a6dSFrançois Tigeot #define AUX_NATIVE_REPLY_DEFER (0x2 << 4) 5218e26a6dSFrançois Tigeot #define AUX_NATIVE_REPLY_MASK (0x3 << 4) 5318e26a6dSFrançois Tigeot 5418e26a6dSFrançois Tigeot #define AUX_I2C_REPLY_ACK (0x0 << 6) 5518e26a6dSFrançois Tigeot #define AUX_I2C_REPLY_NACK (0x1 << 6) 5618e26a6dSFrançois Tigeot #define AUX_I2C_REPLY_DEFER (0x2 << 6) 5718e26a6dSFrançois Tigeot #define AUX_I2C_REPLY_MASK (0x3 << 6) 5818e26a6dSFrançois Tigeot 5918e26a6dSFrançois Tigeot /* AUX CH addresses */ 6018e26a6dSFrançois Tigeot /* DPCD */ 6118e26a6dSFrançois Tigeot #define DP_DPCD_REV 0x000 6218e26a6dSFrançois Tigeot 6318e26a6dSFrançois Tigeot #define DP_MAX_LINK_RATE 0x001 6418e26a6dSFrançois Tigeot 6518e26a6dSFrançois Tigeot #define DP_MAX_LANE_COUNT 0x002 6618e26a6dSFrançois Tigeot # define DP_MAX_LANE_COUNT_MASK 0x1f 6718e26a6dSFrançois Tigeot # define DP_TPS3_SUPPORTED (1 << 6) /* 1.2 */ 6818e26a6dSFrançois Tigeot # define DP_ENHANCED_FRAME_CAP (1 << 7) 6918e26a6dSFrançois Tigeot 7018e26a6dSFrançois Tigeot #define DP_MAX_DOWNSPREAD 0x003 7118e26a6dSFrançois Tigeot # define DP_NO_AUX_HANDSHAKE_LINK_TRAINING (1 << 6) 7218e26a6dSFrançois Tigeot 7318e26a6dSFrançois Tigeot #define DP_NORP 0x004 7418e26a6dSFrançois Tigeot 7518e26a6dSFrançois Tigeot #define DP_DOWNSTREAMPORT_PRESENT 0x005 7618e26a6dSFrançois Tigeot # define DP_DWN_STRM_PORT_PRESENT (1 << 0) 7718e26a6dSFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_MASK 0x06 7818e26a6dSFrançois Tigeot /* 00b = DisplayPort */ 7918e26a6dSFrançois Tigeot /* 01b = Analog */ 8018e26a6dSFrançois Tigeot /* 10b = TMDS or HDMI */ 8118e26a6dSFrançois Tigeot /* 11b = Other */ 8218e26a6dSFrançois Tigeot # define DP_FORMAT_CONVERSION (1 << 3) 8318e26a6dSFrançois Tigeot # define DP_DETAILED_CAP_INFO_AVAILABLE (1 << 4) /* DPI */ 8418e26a6dSFrançois Tigeot 8518e26a6dSFrançois Tigeot #define DP_MAIN_LINK_CHANNEL_CODING 0x006 8618e26a6dSFrançois Tigeot 8718e26a6dSFrançois Tigeot #define DP_DOWN_STREAM_PORT_COUNT 0x007 8818e26a6dSFrançois Tigeot # define DP_PORT_COUNT_MASK 0x0f 8918e26a6dSFrançois Tigeot # define DP_MSA_TIMING_PAR_IGNORED (1 << 6) /* eDP */ 9018e26a6dSFrançois Tigeot # define DP_OUI_SUPPORT (1 << 7) 9118e26a6dSFrançois Tigeot 9218e26a6dSFrançois Tigeot #define DP_I2C_SPEED_CAP 0x00c /* DPI */ 9318e26a6dSFrançois Tigeot # define DP_I2C_SPEED_1K 0x01 9418e26a6dSFrançois Tigeot # define DP_I2C_SPEED_5K 0x02 9518e26a6dSFrançois Tigeot # define DP_I2C_SPEED_10K 0x04 9618e26a6dSFrançois Tigeot # define DP_I2C_SPEED_100K 0x08 9718e26a6dSFrançois Tigeot # define DP_I2C_SPEED_400K 0x10 9818e26a6dSFrançois Tigeot # define DP_I2C_SPEED_1M 0x20 9918e26a6dSFrançois Tigeot 10018e26a6dSFrançois Tigeot #define DP_EDP_CONFIGURATION_CAP 0x00d /* XXX 1.2? */ 10118e26a6dSFrançois Tigeot #define DP_TRAINING_AUX_RD_INTERVAL 0x00e /* XXX 1.2? */ 10218e26a6dSFrançois Tigeot 10318e26a6dSFrançois Tigeot /* Multiple stream transport */ 10418e26a6dSFrançois Tigeot #define DP_MSTM_CAP 0x021 /* 1.2 */ 10518e26a6dSFrançois Tigeot # define DP_MST_CAP (1 << 0) 10618e26a6dSFrançois Tigeot 10718e26a6dSFrançois Tigeot #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */ 10818e26a6dSFrançois Tigeot # define DP_PSR_IS_SUPPORTED 1 10918e26a6dSFrançois Tigeot #define DP_PSR_CAPS 0x071 /* XXX 1.2? */ 11018e26a6dSFrançois Tigeot # define DP_PSR_NO_TRAIN_ON_EXIT 1 11118e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_330 (0 << 1) 11218e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_275 (1 << 1) 11318e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_220 (2 << 1) 11418e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_165 (3 << 1) 11518e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_110 (4 << 1) 11618e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_55 (5 << 1) 11718e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_0 (6 << 1) 11818e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_MASK (7 << 1) 11918e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_SHIFT 1 12018e26a6dSFrançois Tigeot 12118e26a6dSFrançois Tigeot /* 12218e26a6dSFrançois Tigeot * 0x80-0x8f describe downstream port capabilities, but there are two layouts 12318e26a6dSFrançois Tigeot * based on whether DP_DETAILED_CAP_INFO_AVAILABLE was set. If it was not, 12418e26a6dSFrançois Tigeot * each port's descriptor is one byte wide. If it was set, each port's is 12518e26a6dSFrançois Tigeot * four bytes wide, starting with the one byte from the base info. As of 12618e26a6dSFrançois Tigeot * DP interop v1.1a only VGA defines additional detail. 12718e26a6dSFrançois Tigeot */ 12818e26a6dSFrançois Tigeot 12918e26a6dSFrançois Tigeot /* offset 0 */ 13018e26a6dSFrançois Tigeot #define DP_DOWNSTREAM_PORT_0 0x80 13118e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_MASK (7 << 0) 13218e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_DP 0 13318e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_VGA 1 13418e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_DVI 2 13518e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_HDMI 3 13618e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_NON_EDID 4 13718e26a6dSFrançois Tigeot # define DP_DS_PORT_HPD (1 << 3) 13818e26a6dSFrançois Tigeot /* offset 1 for VGA is maximum megapixels per second / 8 */ 13918e26a6dSFrançois Tigeot /* offset 2 */ 14018e26a6dSFrançois Tigeot # define DP_DS_VGA_MAX_BPC_MASK (3 << 0) 14118e26a6dSFrançois Tigeot # define DP_DS_VGA_8BPC 0 14218e26a6dSFrançois Tigeot # define DP_DS_VGA_10BPC 1 14318e26a6dSFrançois Tigeot # define DP_DS_VGA_12BPC 2 14418e26a6dSFrançois Tigeot # define DP_DS_VGA_16BPC 3 14518e26a6dSFrançois Tigeot 14618e26a6dSFrançois Tigeot /* link configuration */ 14718e26a6dSFrançois Tigeot #define DP_LINK_BW_SET 0x100 14818e26a6dSFrançois Tigeot # define DP_LINK_BW_1_62 0x06 14918e26a6dSFrançois Tigeot # define DP_LINK_BW_2_7 0x0a 15018e26a6dSFrançois Tigeot # define DP_LINK_BW_5_4 0x14 /* 1.2 */ 15118e26a6dSFrançois Tigeot 15218e26a6dSFrançois Tigeot #define DP_LANE_COUNT_SET 0x101 15318e26a6dSFrançois Tigeot # define DP_LANE_COUNT_MASK 0x0f 15418e26a6dSFrançois Tigeot # define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7) 15518e26a6dSFrançois Tigeot 15618e26a6dSFrançois Tigeot #define DP_TRAINING_PATTERN_SET 0x102 15718e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_DISABLE 0 15818e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_1 1 15918e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_2 2 16018e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_3 3 /* 1.2 */ 16118e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_MASK 0x3 16218e26a6dSFrançois Tigeot 16318e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_DISABLE (0 << 2) 16418e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_D10_2 (1 << 2) 16518e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_ERROR_RATE (2 << 2) 16618e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_PRBS7 (3 << 2) 16718e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_MASK (3 << 2) 16818e26a6dSFrançois Tigeot 16918e26a6dSFrançois Tigeot # define DP_RECOVERED_CLOCK_OUT_EN (1 << 4) 17018e26a6dSFrançois Tigeot # define DP_LINK_SCRAMBLING_DISABLE (1 << 5) 17118e26a6dSFrançois Tigeot 17218e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_BOTH (0 << 6) 17318e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_DISPARITY (1 << 6) 17418e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_SYMBOL (2 << 6) 17518e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_MASK (3 << 6) 17618e26a6dSFrançois Tigeot 17718e26a6dSFrançois Tigeot #define DP_TRAINING_LANE0_SET 0x103 17818e26a6dSFrançois Tigeot #define DP_TRAINING_LANE1_SET 0x104 17918e26a6dSFrançois Tigeot #define DP_TRAINING_LANE2_SET 0x105 18018e26a6dSFrançois Tigeot #define DP_TRAINING_LANE3_SET 0x106 18118e26a6dSFrançois Tigeot 18218e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_MASK 0x3 18318e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_SHIFT 0 18418e26a6dSFrançois Tigeot # define DP_TRAIN_MAX_SWING_REACHED (1 << 2) 18518e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_400 (0 << 0) 18618e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_600 (1 << 0) 18718e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_800 (2 << 0) 18818e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_1200 (3 << 0) 18918e26a6dSFrançois Tigeot 19018e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_MASK (3 << 3) 19118e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_0 (0 << 3) 19218e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_3_5 (1 << 3) 19318e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_6 (2 << 3) 19418e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_9_5 (3 << 3) 19518e26a6dSFrançois Tigeot 19618e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_SHIFT 3 19718e26a6dSFrançois Tigeot # define DP_TRAIN_MAX_PRE_EMPHASIS_REACHED (1 << 5) 19818e26a6dSFrançois Tigeot 19918e26a6dSFrançois Tigeot #define DP_DOWNSPREAD_CTRL 0x107 20018e26a6dSFrançois Tigeot # define DP_SPREAD_AMP_0_5 (1 << 4) 20118e26a6dSFrançois Tigeot # define DP_MSA_TIMING_PAR_IGNORE_EN (1 << 7) /* eDP */ 20218e26a6dSFrançois Tigeot 20318e26a6dSFrançois Tigeot #define DP_MAIN_LINK_CHANNEL_CODING_SET 0x108 20418e26a6dSFrançois Tigeot # define DP_SET_ANSI_8B10B (1 << 0) 20518e26a6dSFrançois Tigeot 20618e26a6dSFrançois Tigeot #define DP_I2C_SPEED_CONTROL_STATUS 0x109 /* DPI */ 20718e26a6dSFrançois Tigeot /* bitmask as for DP_I2C_SPEED_CAP */ 20818e26a6dSFrançois Tigeot 20918e26a6dSFrançois Tigeot #define DP_EDP_CONFIGURATION_SET 0x10a /* XXX 1.2? */ 21018e26a6dSFrançois Tigeot 21118e26a6dSFrançois Tigeot #define DP_MSTM_CTRL 0x111 /* 1.2 */ 21218e26a6dSFrançois Tigeot # define DP_MST_EN (1 << 0) 21318e26a6dSFrançois Tigeot # define DP_UP_REQ_EN (1 << 1) 21418e26a6dSFrançois Tigeot # define DP_UPSTREAM_IS_SRC (1 << 2) 21518e26a6dSFrançois Tigeot 21618e26a6dSFrançois Tigeot #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */ 21718e26a6dSFrançois Tigeot # define DP_PSR_ENABLE (1 << 0) 21818e26a6dSFrançois Tigeot # define DP_PSR_MAIN_LINK_ACTIVE (1 << 1) 21918e26a6dSFrançois Tigeot # define DP_PSR_CRC_VERIFICATION (1 << 2) 22018e26a6dSFrançois Tigeot # define DP_PSR_FRAME_CAPTURE (1 << 3) 22118e26a6dSFrançois Tigeot 22218e26a6dSFrançois Tigeot #define DP_SINK_COUNT 0x200 22318e26a6dSFrançois Tigeot /* prior to 1.2 bit 7 was reserved mbz */ 22418e26a6dSFrançois Tigeot # define DP_GET_SINK_COUNT(x) ((((x) & 0x80) >> 1) | ((x) & 0x3f)) 22518e26a6dSFrançois Tigeot # define DP_SINK_CP_READY (1 << 6) 22618e26a6dSFrançois Tigeot 22718e26a6dSFrançois Tigeot #define DP_DEVICE_SERVICE_IRQ_VECTOR 0x201 22818e26a6dSFrançois Tigeot # define DP_REMOTE_CONTROL_COMMAND_PENDING (1 << 0) 22918e26a6dSFrançois Tigeot # define DP_AUTOMATED_TEST_REQUEST (1 << 1) 23018e26a6dSFrançois Tigeot # define DP_CP_IRQ (1 << 2) 23118e26a6dSFrançois Tigeot # define DP_SINK_SPECIFIC_IRQ (1 << 6) 23218e26a6dSFrançois Tigeot 23318e26a6dSFrançois Tigeot #define DP_LANE0_1_STATUS 0x202 23418e26a6dSFrançois Tigeot #define DP_LANE2_3_STATUS 0x203 23518e26a6dSFrançois Tigeot # define DP_LANE_CR_DONE (1 << 0) 23618e26a6dSFrançois Tigeot # define DP_LANE_CHANNEL_EQ_DONE (1 << 1) 23718e26a6dSFrançois Tigeot # define DP_LANE_SYMBOL_LOCKED (1 << 2) 23818e26a6dSFrançois Tigeot 23918e26a6dSFrançois Tigeot #define DP_CHANNEL_EQ_BITS (DP_LANE_CR_DONE | \ 24018e26a6dSFrançois Tigeot DP_LANE_CHANNEL_EQ_DONE | \ 24118e26a6dSFrançois Tigeot DP_LANE_SYMBOL_LOCKED) 24218e26a6dSFrançois Tigeot 24318e26a6dSFrançois Tigeot #define DP_LANE_ALIGN_STATUS_UPDATED 0x204 24418e26a6dSFrançois Tigeot 24518e26a6dSFrançois Tigeot #define DP_INTERLANE_ALIGN_DONE (1 << 0) 24618e26a6dSFrançois Tigeot #define DP_DOWNSTREAM_PORT_STATUS_CHANGED (1 << 6) 24718e26a6dSFrançois Tigeot #define DP_LINK_STATUS_UPDATED (1 << 7) 24818e26a6dSFrançois Tigeot 24918e26a6dSFrançois Tigeot #define DP_SINK_STATUS 0x205 25018e26a6dSFrançois Tigeot 25118e26a6dSFrançois Tigeot #define DP_RECEIVE_PORT_0_STATUS (1 << 0) 25218e26a6dSFrançois Tigeot #define DP_RECEIVE_PORT_1_STATUS (1 << 1) 25318e26a6dSFrançois Tigeot 25418e26a6dSFrançois Tigeot #define DP_ADJUST_REQUEST_LANE0_1 0x206 25518e26a6dSFrançois Tigeot #define DP_ADJUST_REQUEST_LANE2_3 0x207 25618e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03 25718e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0 25818e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c 25918e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2 26018e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30 26118e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4 26218e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0 26318e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6 26418e26a6dSFrançois Tigeot 26518e26a6dSFrançois Tigeot #define DP_TEST_REQUEST 0x218 26618e26a6dSFrançois Tigeot # define DP_TEST_LINK_TRAINING (1 << 0) 26718e26a6dSFrançois Tigeot # define DP_TEST_LINK_PATTERN (1 << 1) 26818e26a6dSFrançois Tigeot # define DP_TEST_LINK_EDID_READ (1 << 2) 26918e26a6dSFrançois Tigeot # define DP_TEST_LINK_PHY_TEST_PATTERN (1 << 3) /* DPCD >= 1.1 */ 27018e26a6dSFrançois Tigeot 27118e26a6dSFrançois Tigeot #define DP_TEST_LINK_RATE 0x219 27218e26a6dSFrançois Tigeot # define DP_LINK_RATE_162 (0x6) 27318e26a6dSFrançois Tigeot # define DP_LINK_RATE_27 (0xa) 27418e26a6dSFrançois Tigeot 27518e26a6dSFrançois Tigeot #define DP_TEST_LANE_COUNT 0x220 27618e26a6dSFrançois Tigeot 27718e26a6dSFrançois Tigeot #define DP_TEST_PATTERN 0x221 27818e26a6dSFrançois Tigeot 27918e26a6dSFrançois Tigeot #define DP_TEST_RESPONSE 0x260 28018e26a6dSFrançois Tigeot # define DP_TEST_ACK (1 << 0) 28118e26a6dSFrançois Tigeot # define DP_TEST_NAK (1 << 1) 28218e26a6dSFrançois Tigeot # define DP_TEST_EDID_CHECKSUM_WRITE (1 << 2) 28318e26a6dSFrançois Tigeot 28418e26a6dSFrançois Tigeot #define DP_SOURCE_OUI 0x300 28518e26a6dSFrançois Tigeot #define DP_SINK_OUI 0x400 28618e26a6dSFrançois Tigeot #define DP_BRANCH_OUI 0x500 28718e26a6dSFrançois Tigeot 28818e26a6dSFrançois Tigeot #define DP_SET_POWER 0x600 28918e26a6dSFrançois Tigeot # define DP_SET_POWER_D0 0x1 29018e26a6dSFrançois Tigeot # define DP_SET_POWER_D3 0x2 29118e26a6dSFrançois Tigeot 29218e26a6dSFrançois Tigeot #define DP_PSR_ERROR_STATUS 0x2006 /* XXX 1.2? */ 29318e26a6dSFrançois Tigeot # define DP_PSR_LINK_CRC_ERROR (1 << 0) 29418e26a6dSFrançois Tigeot # define DP_PSR_RFB_STORAGE_ERROR (1 << 1) 29518e26a6dSFrançois Tigeot 29618e26a6dSFrançois Tigeot #define DP_PSR_ESI 0x2007 /* XXX 1.2? */ 29718e26a6dSFrançois Tigeot # define DP_PSR_CAPS_CHANGE (1 << 0) 29818e26a6dSFrançois Tigeot 29918e26a6dSFrançois Tigeot #define DP_PSR_STATUS 0x2008 /* XXX 1.2? */ 30018e26a6dSFrançois Tigeot # define DP_PSR_SINK_INACTIVE 0 30118e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_SRC_SYNCED 1 30218e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_RFB 2 30318e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_SINK_SYNCED 3 30418e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_RESYNC 4 30518e26a6dSFrançois Tigeot # define DP_PSR_SINK_INTERNAL_ERROR 7 30618e26a6dSFrançois Tigeot # define DP_PSR_SINK_STATE_MASK 0x07 30718e26a6dSFrançois Tigeot 30818e26a6dSFrançois Tigeot #define MODE_I2C_START 1 30918e26a6dSFrançois Tigeot #define MODE_I2C_WRITE 2 31018e26a6dSFrançois Tigeot #define MODE_I2C_READ 4 31118e26a6dSFrançois Tigeot #define MODE_I2C_STOP 8 31218e26a6dSFrançois Tigeot 313ea132f0fSFrançois Tigeot /** 314ea132f0fSFrançois Tigeot * struct i2c_algo_dp_aux_data - driver interface structure for i2c over dp 315ea132f0fSFrançois Tigeot * aux algorithm 316ea132f0fSFrançois Tigeot * @running: set by the algo indicating whether an i2c is ongoing or whether 317ea132f0fSFrançois Tigeot * the i2c bus is quiescent 318ea132f0fSFrançois Tigeot * @address: i2c target address for the currently ongoing transfer 319ea132f0fSFrançois Tigeot * @aux_ch: driver callback to transfer a single byte of the i2c payload 320ea132f0fSFrançois Tigeot */ 32118e26a6dSFrançois Tigeot struct iic_dp_aux_data { 32218e26a6dSFrançois Tigeot bool running; 32318e26a6dSFrançois Tigeot u16 address; 32418e26a6dSFrançois Tigeot void *priv; 32518e26a6dSFrançois Tigeot int (*aux_ch)(device_t adapter, int mode, uint8_t write_byte, 32618e26a6dSFrançois Tigeot uint8_t *read_byte); 32718e26a6dSFrançois Tigeot device_t port; 32818e26a6dSFrançois Tigeot }; 32918e26a6dSFrançois Tigeot 33018e26a6dSFrançois Tigeot int iic_dp_aux_add_bus(device_t dev, const char *name, 33118e26a6dSFrançois Tigeot int (*ch)(device_t idev, int mode, uint8_t write_byte, uint8_t *read_byte), 33218e26a6dSFrançois Tigeot void *priv, device_t *bus, device_t *adapter); 33318e26a6dSFrançois Tigeot 33418e26a6dSFrançois Tigeot 33518e26a6dSFrançois Tigeot #define DP_LINK_STATUS_SIZE 6 33618e26a6dSFrançois Tigeot bool drm_dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE], 33718e26a6dSFrançois Tigeot int lane_count); 33818e26a6dSFrançois Tigeot bool drm_dp_clock_recovery_ok(u8 link_status[DP_LINK_STATUS_SIZE], 33918e26a6dSFrançois Tigeot int lane_count); 34018e26a6dSFrançois Tigeot u8 drm_dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE], 34118e26a6dSFrançois Tigeot int lane); 34218e26a6dSFrançois Tigeot u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE], 34318e26a6dSFrançois Tigeot int lane); 34418e26a6dSFrançois Tigeot 34518e26a6dSFrançois Tigeot #define DP_RECEIVER_CAP_SIZE 0xf 34618e26a6dSFrançois Tigeot void drm_dp_link_train_clock_recovery_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]); 34718e26a6dSFrançois Tigeot void drm_dp_link_train_channel_eq_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]); 34818e26a6dSFrançois Tigeot 34918e26a6dSFrançois Tigeot u8 drm_dp_link_rate_to_bw_code(int link_rate); 35018e26a6dSFrançois Tigeot int drm_dp_bw_code_to_link_rate(u8 link_bw); 35118e26a6dSFrançois Tigeot 35218e26a6dSFrançois Tigeot static inline int 35318e26a6dSFrançois Tigeot drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE]) 35418e26a6dSFrançois Tigeot { 35518e26a6dSFrançois Tigeot return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]); 35618e26a6dSFrançois Tigeot } 35718e26a6dSFrançois Tigeot 35818e26a6dSFrançois Tigeot static inline u8 35918e26a6dSFrançois Tigeot drm_dp_max_lane_count(u8 dpcd[DP_RECEIVER_CAP_SIZE]) 36018e26a6dSFrançois Tigeot { 36118e26a6dSFrançois Tigeot return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK; 36218e26a6dSFrançois Tigeot } 36318e26a6dSFrançois Tigeot 36418e26a6dSFrançois Tigeot #endif /* _DRM_DP_HELPER_H_ */ 365