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*9edbd4a0SFrançois Tigeot #include <linux/types.h> 27*9edbd4a0SFrançois Tigeot #include <linux/i2c.h> 2819df918dSFrançois Tigeot #include <linux/delay.h> 2919df918dSFrançois Tigeot 3018e26a6dSFrançois Tigeot /* 3118e26a6dSFrançois Tigeot * Unless otherwise noted, all values are from the DP 1.1a spec. Note that 3218e26a6dSFrançois Tigeot * DP and DPCD versions are independent. Differences from 1.0 are not noted, 3318e26a6dSFrançois Tigeot * 1.0 devices basically don't exist in the wild. 3418e26a6dSFrançois Tigeot * 3518e26a6dSFrançois Tigeot * Abbreviations, in chronological order: 3618e26a6dSFrançois Tigeot * 3718e26a6dSFrançois Tigeot * eDP: Embedded DisplayPort version 1 3818e26a6dSFrançois Tigeot * DPI: DisplayPort Interoperability Guideline v1.1a 3918e26a6dSFrançois Tigeot * 1.2: DisplayPort 1.2 4018e26a6dSFrançois Tigeot * 4118e26a6dSFrançois Tigeot * 1.2 formally includes both eDP and DPI definitions. 4218e26a6dSFrançois Tigeot */ 4318e26a6dSFrançois Tigeot 44*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_WRITE 0x0 45*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_READ 0x1 46*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_STATUS 0x2 47*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_MOT 0x4 48*9edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_WRITE 0x8 49*9edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_READ 0x9 5018e26a6dSFrançois Tigeot 51*9edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_ACK (0x0 << 0) 52*9edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_NACK (0x1 << 0) 53*9edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_DEFER (0x2 << 0) 54*9edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_MASK (0x3 << 0) 5518e26a6dSFrançois Tigeot 56*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_ACK (0x0 << 2) 57*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_NACK (0x1 << 2) 58*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_DEFER (0x2 << 2) 59*9edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_MASK (0x3 << 2) 6018e26a6dSFrançois Tigeot 6118e26a6dSFrançois Tigeot /* AUX CH addresses */ 6218e26a6dSFrançois Tigeot /* DPCD */ 6318e26a6dSFrançois Tigeot #define DP_DPCD_REV 0x000 6418e26a6dSFrançois Tigeot 6518e26a6dSFrançois Tigeot #define DP_MAX_LINK_RATE 0x001 6618e26a6dSFrançois Tigeot 6718e26a6dSFrançois Tigeot #define DP_MAX_LANE_COUNT 0x002 6818e26a6dSFrançois Tigeot # define DP_MAX_LANE_COUNT_MASK 0x1f 6918e26a6dSFrançois Tigeot # define DP_TPS3_SUPPORTED (1 << 6) /* 1.2 */ 7018e26a6dSFrançois Tigeot # define DP_ENHANCED_FRAME_CAP (1 << 7) 7118e26a6dSFrançois Tigeot 7218e26a6dSFrançois Tigeot #define DP_MAX_DOWNSPREAD 0x003 7318e26a6dSFrançois Tigeot # define DP_NO_AUX_HANDSHAKE_LINK_TRAINING (1 << 6) 7418e26a6dSFrançois Tigeot 7518e26a6dSFrançois Tigeot #define DP_NORP 0x004 7618e26a6dSFrançois Tigeot 7718e26a6dSFrançois Tigeot #define DP_DOWNSTREAMPORT_PRESENT 0x005 7818e26a6dSFrançois Tigeot # define DP_DWN_STRM_PORT_PRESENT (1 << 0) 7918e26a6dSFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_MASK 0x06 80*9edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_DP (0 << 1) 81*9edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_ANALOG (1 << 1) 82*9edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_TMDS (2 << 1) 83*9edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_OTHER (3 << 1) 8418e26a6dSFrançois Tigeot # define DP_FORMAT_CONVERSION (1 << 3) 8518e26a6dSFrançois Tigeot # define DP_DETAILED_CAP_INFO_AVAILABLE (1 << 4) /* DPI */ 8618e26a6dSFrançois Tigeot 8718e26a6dSFrançois Tigeot #define DP_MAIN_LINK_CHANNEL_CODING 0x006 8818e26a6dSFrançois Tigeot 8918e26a6dSFrançois Tigeot #define DP_DOWN_STREAM_PORT_COUNT 0x007 9018e26a6dSFrançois Tigeot # define DP_PORT_COUNT_MASK 0x0f 9118e26a6dSFrançois Tigeot # define DP_MSA_TIMING_PAR_IGNORED (1 << 6) /* eDP */ 9218e26a6dSFrançois Tigeot # define DP_OUI_SUPPORT (1 << 7) 9318e26a6dSFrançois Tigeot 9418e26a6dSFrançois Tigeot #define DP_I2C_SPEED_CAP 0x00c /* DPI */ 9518e26a6dSFrançois Tigeot # define DP_I2C_SPEED_1K 0x01 9618e26a6dSFrançois Tigeot # define DP_I2C_SPEED_5K 0x02 9718e26a6dSFrançois Tigeot # define DP_I2C_SPEED_10K 0x04 9818e26a6dSFrançois Tigeot # define DP_I2C_SPEED_100K 0x08 9918e26a6dSFrançois Tigeot # define DP_I2C_SPEED_400K 0x10 10018e26a6dSFrançois Tigeot # define DP_I2C_SPEED_1M 0x20 10118e26a6dSFrançois Tigeot 10218e26a6dSFrançois Tigeot #define DP_EDP_CONFIGURATION_CAP 0x00d /* XXX 1.2? */ 10318e26a6dSFrançois Tigeot #define DP_TRAINING_AUX_RD_INTERVAL 0x00e /* XXX 1.2? */ 10418e26a6dSFrançois Tigeot 10518e26a6dSFrançois Tigeot /* Multiple stream transport */ 10618e26a6dSFrançois Tigeot #define DP_MSTM_CAP 0x021 /* 1.2 */ 10718e26a6dSFrançois Tigeot # define DP_MST_CAP (1 << 0) 10818e26a6dSFrançois Tigeot 10918e26a6dSFrançois Tigeot #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */ 11018e26a6dSFrançois Tigeot # define DP_PSR_IS_SUPPORTED 1 11118e26a6dSFrançois Tigeot #define DP_PSR_CAPS 0x071 /* XXX 1.2? */ 11218e26a6dSFrançois Tigeot # define DP_PSR_NO_TRAIN_ON_EXIT 1 11318e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_330 (0 << 1) 11418e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_275 (1 << 1) 11518e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_220 (2 << 1) 11618e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_165 (3 << 1) 11718e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_110 (4 << 1) 11818e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_55 (5 << 1) 11918e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_0 (6 << 1) 12018e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_MASK (7 << 1) 12118e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_SHIFT 1 12218e26a6dSFrançois Tigeot 12318e26a6dSFrançois Tigeot /* 12418e26a6dSFrançois Tigeot * 0x80-0x8f describe downstream port capabilities, but there are two layouts 12518e26a6dSFrançois Tigeot * based on whether DP_DETAILED_CAP_INFO_AVAILABLE was set. If it was not, 12618e26a6dSFrançois Tigeot * each port's descriptor is one byte wide. If it was set, each port's is 12718e26a6dSFrançois Tigeot * four bytes wide, starting with the one byte from the base info. As of 12818e26a6dSFrançois Tigeot * DP interop v1.1a only VGA defines additional detail. 12918e26a6dSFrançois Tigeot */ 13018e26a6dSFrançois Tigeot 13118e26a6dSFrançois Tigeot /* offset 0 */ 13218e26a6dSFrançois Tigeot #define DP_DOWNSTREAM_PORT_0 0x80 13318e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_MASK (7 << 0) 13418e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_DP 0 13518e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_VGA 1 13618e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_DVI 2 13718e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_HDMI 3 13818e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_NON_EDID 4 13918e26a6dSFrançois Tigeot # define DP_DS_PORT_HPD (1 << 3) 14018e26a6dSFrançois Tigeot /* offset 1 for VGA is maximum megapixels per second / 8 */ 14118e26a6dSFrançois Tigeot /* offset 2 */ 14218e26a6dSFrançois Tigeot # define DP_DS_VGA_MAX_BPC_MASK (3 << 0) 14318e26a6dSFrançois Tigeot # define DP_DS_VGA_8BPC 0 14418e26a6dSFrançois Tigeot # define DP_DS_VGA_10BPC 1 14518e26a6dSFrançois Tigeot # define DP_DS_VGA_12BPC 2 14618e26a6dSFrançois Tigeot # define DP_DS_VGA_16BPC 3 14718e26a6dSFrançois Tigeot 14818e26a6dSFrançois Tigeot /* link configuration */ 14918e26a6dSFrançois Tigeot #define DP_LINK_BW_SET 0x100 15018e26a6dSFrançois Tigeot # define DP_LINK_BW_1_62 0x06 15118e26a6dSFrançois Tigeot # define DP_LINK_BW_2_7 0x0a 15218e26a6dSFrançois Tigeot # define DP_LINK_BW_5_4 0x14 /* 1.2 */ 15318e26a6dSFrançois Tigeot 15418e26a6dSFrançois Tigeot #define DP_LANE_COUNT_SET 0x101 15518e26a6dSFrançois Tigeot # define DP_LANE_COUNT_MASK 0x0f 15618e26a6dSFrançois Tigeot # define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7) 15718e26a6dSFrançois Tigeot 15818e26a6dSFrançois Tigeot #define DP_TRAINING_PATTERN_SET 0x102 15918e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_DISABLE 0 16018e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_1 1 16118e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_2 2 16218e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_3 3 /* 1.2 */ 16318e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_MASK 0x3 16418e26a6dSFrançois Tigeot 16518e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_DISABLE (0 << 2) 16618e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_D10_2 (1 << 2) 16718e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_ERROR_RATE (2 << 2) 16818e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_PRBS7 (3 << 2) 16918e26a6dSFrançois Tigeot # define DP_LINK_QUAL_PATTERN_MASK (3 << 2) 17018e26a6dSFrançois Tigeot 17118e26a6dSFrançois Tigeot # define DP_RECOVERED_CLOCK_OUT_EN (1 << 4) 17218e26a6dSFrançois Tigeot # define DP_LINK_SCRAMBLING_DISABLE (1 << 5) 17318e26a6dSFrançois Tigeot 17418e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_BOTH (0 << 6) 17518e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_DISPARITY (1 << 6) 17618e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_SYMBOL (2 << 6) 17718e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_MASK (3 << 6) 17818e26a6dSFrançois Tigeot 17918e26a6dSFrançois Tigeot #define DP_TRAINING_LANE0_SET 0x103 18018e26a6dSFrançois Tigeot #define DP_TRAINING_LANE1_SET 0x104 18118e26a6dSFrançois Tigeot #define DP_TRAINING_LANE2_SET 0x105 18218e26a6dSFrançois Tigeot #define DP_TRAINING_LANE3_SET 0x106 18318e26a6dSFrançois Tigeot 18418e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_MASK 0x3 18518e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_SHIFT 0 18618e26a6dSFrançois Tigeot # define DP_TRAIN_MAX_SWING_REACHED (1 << 2) 18718e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_400 (0 << 0) 18818e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_600 (1 << 0) 18918e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_800 (2 << 0) 19018e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_1200 (3 << 0) 19118e26a6dSFrançois Tigeot 19218e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_MASK (3 << 3) 19318e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_0 (0 << 3) 19418e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_3_5 (1 << 3) 19518e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_6 (2 << 3) 19618e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_9_5 (3 << 3) 19718e26a6dSFrançois Tigeot 19818e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_SHIFT 3 19918e26a6dSFrançois Tigeot # define DP_TRAIN_MAX_PRE_EMPHASIS_REACHED (1 << 5) 20018e26a6dSFrançois Tigeot 20118e26a6dSFrançois Tigeot #define DP_DOWNSPREAD_CTRL 0x107 20218e26a6dSFrançois Tigeot # define DP_SPREAD_AMP_0_5 (1 << 4) 20318e26a6dSFrançois Tigeot # define DP_MSA_TIMING_PAR_IGNORE_EN (1 << 7) /* eDP */ 20418e26a6dSFrançois Tigeot 20518e26a6dSFrançois Tigeot #define DP_MAIN_LINK_CHANNEL_CODING_SET 0x108 20618e26a6dSFrançois Tigeot # define DP_SET_ANSI_8B10B (1 << 0) 20718e26a6dSFrançois Tigeot 20818e26a6dSFrançois Tigeot #define DP_I2C_SPEED_CONTROL_STATUS 0x109 /* DPI */ 20918e26a6dSFrançois Tigeot /* bitmask as for DP_I2C_SPEED_CAP */ 21018e26a6dSFrançois Tigeot 21118e26a6dSFrançois Tigeot #define DP_EDP_CONFIGURATION_SET 0x10a /* XXX 1.2? */ 21218e26a6dSFrançois Tigeot 21318e26a6dSFrançois Tigeot #define DP_MSTM_CTRL 0x111 /* 1.2 */ 21418e26a6dSFrançois Tigeot # define DP_MST_EN (1 << 0) 21518e26a6dSFrançois Tigeot # define DP_UP_REQ_EN (1 << 1) 21618e26a6dSFrançois Tigeot # define DP_UPSTREAM_IS_SRC (1 << 2) 21718e26a6dSFrançois Tigeot 21818e26a6dSFrançois Tigeot #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */ 21918e26a6dSFrançois Tigeot # define DP_PSR_ENABLE (1 << 0) 22018e26a6dSFrançois Tigeot # define DP_PSR_MAIN_LINK_ACTIVE (1 << 1) 22118e26a6dSFrançois Tigeot # define DP_PSR_CRC_VERIFICATION (1 << 2) 22218e26a6dSFrançois Tigeot # define DP_PSR_FRAME_CAPTURE (1 << 3) 22318e26a6dSFrançois Tigeot 22418e26a6dSFrançois Tigeot #define DP_SINK_COUNT 0x200 22518e26a6dSFrançois Tigeot /* prior to 1.2 bit 7 was reserved mbz */ 22618e26a6dSFrançois Tigeot # define DP_GET_SINK_COUNT(x) ((((x) & 0x80) >> 1) | ((x) & 0x3f)) 22718e26a6dSFrançois Tigeot # define DP_SINK_CP_READY (1 << 6) 22818e26a6dSFrançois Tigeot 22918e26a6dSFrançois Tigeot #define DP_DEVICE_SERVICE_IRQ_VECTOR 0x201 23018e26a6dSFrançois Tigeot # define DP_REMOTE_CONTROL_COMMAND_PENDING (1 << 0) 23118e26a6dSFrançois Tigeot # define DP_AUTOMATED_TEST_REQUEST (1 << 1) 23218e26a6dSFrançois Tigeot # define DP_CP_IRQ (1 << 2) 23318e26a6dSFrançois Tigeot # define DP_SINK_SPECIFIC_IRQ (1 << 6) 23418e26a6dSFrançois Tigeot 23518e26a6dSFrançois Tigeot #define DP_LANE0_1_STATUS 0x202 23618e26a6dSFrançois Tigeot #define DP_LANE2_3_STATUS 0x203 23718e26a6dSFrançois Tigeot # define DP_LANE_CR_DONE (1 << 0) 23818e26a6dSFrançois Tigeot # define DP_LANE_CHANNEL_EQ_DONE (1 << 1) 23918e26a6dSFrançois Tigeot # define DP_LANE_SYMBOL_LOCKED (1 << 2) 24018e26a6dSFrançois Tigeot 24118e26a6dSFrançois Tigeot #define DP_CHANNEL_EQ_BITS (DP_LANE_CR_DONE | \ 24218e26a6dSFrançois Tigeot DP_LANE_CHANNEL_EQ_DONE | \ 24318e26a6dSFrançois Tigeot DP_LANE_SYMBOL_LOCKED) 24418e26a6dSFrançois Tigeot 24518e26a6dSFrançois Tigeot #define DP_LANE_ALIGN_STATUS_UPDATED 0x204 24618e26a6dSFrançois Tigeot 24718e26a6dSFrançois Tigeot #define DP_INTERLANE_ALIGN_DONE (1 << 0) 24818e26a6dSFrançois Tigeot #define DP_DOWNSTREAM_PORT_STATUS_CHANGED (1 << 6) 24918e26a6dSFrançois Tigeot #define DP_LINK_STATUS_UPDATED (1 << 7) 25018e26a6dSFrançois Tigeot 25118e26a6dSFrançois Tigeot #define DP_SINK_STATUS 0x205 25218e26a6dSFrançois Tigeot 25318e26a6dSFrançois Tigeot #define DP_RECEIVE_PORT_0_STATUS (1 << 0) 25418e26a6dSFrançois Tigeot #define DP_RECEIVE_PORT_1_STATUS (1 << 1) 25518e26a6dSFrançois Tigeot 25618e26a6dSFrançois Tigeot #define DP_ADJUST_REQUEST_LANE0_1 0x206 25718e26a6dSFrançois Tigeot #define DP_ADJUST_REQUEST_LANE2_3 0x207 25818e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03 25918e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0 26018e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c 26118e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2 26218e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30 26318e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4 26418e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0 26518e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6 26618e26a6dSFrançois Tigeot 26718e26a6dSFrançois Tigeot #define DP_TEST_REQUEST 0x218 26818e26a6dSFrançois Tigeot # define DP_TEST_LINK_TRAINING (1 << 0) 269*9edbd4a0SFrançois Tigeot # define DP_TEST_LINK_VIDEO_PATTERN (1 << 1) 27018e26a6dSFrançois Tigeot # define DP_TEST_LINK_EDID_READ (1 << 2) 27118e26a6dSFrançois Tigeot # define DP_TEST_LINK_PHY_TEST_PATTERN (1 << 3) /* DPCD >= 1.1 */ 272*9edbd4a0SFrançois Tigeot # define DP_TEST_LINK_FAUX_PATTERN (1 << 4) /* DPCD >= 1.2 */ 27318e26a6dSFrançois Tigeot 27418e26a6dSFrançois Tigeot #define DP_TEST_LINK_RATE 0x219 27518e26a6dSFrançois Tigeot # define DP_LINK_RATE_162 (0x6) 27618e26a6dSFrançois Tigeot # define DP_LINK_RATE_27 (0xa) 27718e26a6dSFrançois Tigeot 27818e26a6dSFrançois Tigeot #define DP_TEST_LANE_COUNT 0x220 27918e26a6dSFrançois Tigeot 28018e26a6dSFrançois Tigeot #define DP_TEST_PATTERN 0x221 28118e26a6dSFrançois Tigeot 28218e26a6dSFrançois Tigeot #define DP_TEST_RESPONSE 0x260 28318e26a6dSFrançois Tigeot # define DP_TEST_ACK (1 << 0) 28418e26a6dSFrançois Tigeot # define DP_TEST_NAK (1 << 1) 28518e26a6dSFrançois Tigeot # define DP_TEST_EDID_CHECKSUM_WRITE (1 << 2) 28618e26a6dSFrançois Tigeot 28718e26a6dSFrançois Tigeot #define DP_SOURCE_OUI 0x300 28818e26a6dSFrançois Tigeot #define DP_SINK_OUI 0x400 28918e26a6dSFrançois Tigeot #define DP_BRANCH_OUI 0x500 29018e26a6dSFrançois Tigeot 29118e26a6dSFrançois Tigeot #define DP_SET_POWER 0x600 29218e26a6dSFrançois Tigeot # define DP_SET_POWER_D0 0x1 29318e26a6dSFrançois Tigeot # define DP_SET_POWER_D3 0x2 29418e26a6dSFrançois Tigeot 29518e26a6dSFrançois Tigeot #define DP_PSR_ERROR_STATUS 0x2006 /* XXX 1.2? */ 29618e26a6dSFrançois Tigeot # define DP_PSR_LINK_CRC_ERROR (1 << 0) 29718e26a6dSFrançois Tigeot # define DP_PSR_RFB_STORAGE_ERROR (1 << 1) 29818e26a6dSFrançois Tigeot 29918e26a6dSFrançois Tigeot #define DP_PSR_ESI 0x2007 /* XXX 1.2? */ 30018e26a6dSFrançois Tigeot # define DP_PSR_CAPS_CHANGE (1 << 0) 30118e26a6dSFrançois Tigeot 30218e26a6dSFrançois Tigeot #define DP_PSR_STATUS 0x2008 /* XXX 1.2? */ 30318e26a6dSFrançois Tigeot # define DP_PSR_SINK_INACTIVE 0 30418e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_SRC_SYNCED 1 30518e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_RFB 2 30618e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_SINK_SYNCED 3 30718e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_RESYNC 4 30818e26a6dSFrançois Tigeot # define DP_PSR_SINK_INTERNAL_ERROR 7 30918e26a6dSFrançois Tigeot # define DP_PSR_SINK_STATE_MASK 0x07 31018e26a6dSFrançois Tigeot 31118e26a6dSFrançois Tigeot #define MODE_I2C_START 1 31218e26a6dSFrançois Tigeot #define MODE_I2C_WRITE 2 31318e26a6dSFrançois Tigeot #define MODE_I2C_READ 4 31418e26a6dSFrançois Tigeot #define MODE_I2C_STOP 8 31518e26a6dSFrançois Tigeot 316ea132f0fSFrançois Tigeot /** 317ea132f0fSFrançois Tigeot * struct i2c_algo_dp_aux_data - driver interface structure for i2c over dp 318ea132f0fSFrançois Tigeot * aux algorithm 319ea132f0fSFrançois Tigeot * @running: set by the algo indicating whether an i2c is ongoing or whether 320ea132f0fSFrançois Tigeot * the i2c bus is quiescent 321ea132f0fSFrançois Tigeot * @address: i2c target address for the currently ongoing transfer 322ea132f0fSFrançois Tigeot * @aux_ch: driver callback to transfer a single byte of the i2c payload 323ea132f0fSFrançois Tigeot */ 324*9edbd4a0SFrançois Tigeot struct i2c_algo_dp_aux_data { 32518e26a6dSFrançois Tigeot bool running; 32618e26a6dSFrançois Tigeot u16 address; 327*9edbd4a0SFrançois Tigeot int (*aux_ch) (struct device *adapter, 328*9edbd4a0SFrançois Tigeot int mode, uint8_t write_byte, 32918e26a6dSFrançois Tigeot uint8_t *read_byte); 330*9edbd4a0SFrançois Tigeot void *priv; 33118e26a6dSFrançois Tigeot device_t port; 33218e26a6dSFrançois Tigeot }; 33318e26a6dSFrançois Tigeot 33418e26a6dSFrançois Tigeot int iic_dp_aux_add_bus(device_t dev, const char *name, 33518e26a6dSFrançois Tigeot int (*ch)(device_t idev, int mode, uint8_t write_byte, uint8_t *read_byte), 33618e26a6dSFrançois Tigeot void *priv, device_t *bus, device_t *adapter); 33718e26a6dSFrançois Tigeot 33818e26a6dSFrançois Tigeot 33918e26a6dSFrançois Tigeot #define DP_LINK_STATUS_SIZE 6 340*9edbd4a0SFrançois Tigeot bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], 34118e26a6dSFrançois Tigeot int lane_count); 342*9edbd4a0SFrançois Tigeot bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE], 34318e26a6dSFrançois Tigeot int lane_count); 344*9edbd4a0SFrançois Tigeot u8 drm_dp_get_adjust_request_voltage(const u8 link_status[DP_LINK_STATUS_SIZE], 34518e26a6dSFrançois Tigeot int lane); 346*9edbd4a0SFrançois Tigeot u8 drm_dp_get_adjust_request_pre_emphasis(const u8 link_status[DP_LINK_STATUS_SIZE], 34718e26a6dSFrançois Tigeot int lane); 34818e26a6dSFrançois Tigeot 34918e26a6dSFrançois Tigeot #define DP_RECEIVER_CAP_SIZE 0xf 350*9edbd4a0SFrançois Tigeot #define EDP_PSR_RECEIVER_CAP_SIZE 2 351*9edbd4a0SFrançois Tigeot 352*9edbd4a0SFrançois Tigeot void drm_dp_link_train_clock_recovery_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]); 353*9edbd4a0SFrançois Tigeot void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]); 35418e26a6dSFrançois Tigeot 35518e26a6dSFrançois Tigeot u8 drm_dp_link_rate_to_bw_code(int link_rate); 35618e26a6dSFrançois Tigeot int drm_dp_bw_code_to_link_rate(u8 link_bw); 35718e26a6dSFrançois Tigeot 358*9edbd4a0SFrançois Tigeot struct edp_sdp_header { 359*9edbd4a0SFrançois Tigeot u8 HB0; /* Secondary Data Packet ID */ 360*9edbd4a0SFrançois Tigeot u8 HB1; /* Secondary Data Packet Type */ 361*9edbd4a0SFrançois Tigeot u8 HB2; /* 7:5 reserved, 4:0 revision number */ 362*9edbd4a0SFrançois Tigeot u8 HB3; /* 7:5 reserved, 4:0 number of valid data bytes */ 363*9edbd4a0SFrançois Tigeot } __packed; 364*9edbd4a0SFrançois Tigeot 365*9edbd4a0SFrançois Tigeot #define EDP_SDP_HEADER_REVISION_MASK 0x1F 366*9edbd4a0SFrançois Tigeot #define EDP_SDP_HEADER_VALID_PAYLOAD_BYTES 0x1F 367*9edbd4a0SFrançois Tigeot 368*9edbd4a0SFrançois Tigeot struct edp_vsc_psr { 369*9edbd4a0SFrançois Tigeot struct edp_sdp_header sdp_header; 370*9edbd4a0SFrançois Tigeot u8 DB0; /* Stereo Interface */ 371*9edbd4a0SFrançois Tigeot u8 DB1; /* 0 - PSR State; 1 - Update RFB; 2 - CRC Valid */ 372*9edbd4a0SFrançois Tigeot u8 DB2; /* CRC value bits 7:0 of the R or Cr component */ 373*9edbd4a0SFrançois Tigeot u8 DB3; /* CRC value bits 15:8 of the R or Cr component */ 374*9edbd4a0SFrançois Tigeot u8 DB4; /* CRC value bits 7:0 of the G or Y component */ 375*9edbd4a0SFrançois Tigeot u8 DB5; /* CRC value bits 15:8 of the G or Y component */ 376*9edbd4a0SFrançois Tigeot u8 DB6; /* CRC value bits 7:0 of the B or Cb component */ 377*9edbd4a0SFrançois Tigeot u8 DB7; /* CRC value bits 15:8 of the B or Cb component */ 378*9edbd4a0SFrançois Tigeot u8 DB8_31[24]; /* Reserved */ 379*9edbd4a0SFrançois Tigeot } __packed; 380*9edbd4a0SFrançois Tigeot 381*9edbd4a0SFrançois Tigeot #define EDP_VSC_PSR_STATE_ACTIVE (1<<0) 382*9edbd4a0SFrançois Tigeot #define EDP_VSC_PSR_UPDATE_RFB (1<<1) 383*9edbd4a0SFrançois Tigeot #define EDP_VSC_PSR_CRC_VALUES_VALID (1<<2) 384*9edbd4a0SFrançois Tigeot 38518e26a6dSFrançois Tigeot static inline int 386*9edbd4a0SFrançois Tigeot drm_dp_max_link_rate(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 38718e26a6dSFrançois Tigeot { 38818e26a6dSFrançois Tigeot return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]); 38918e26a6dSFrançois Tigeot } 39018e26a6dSFrançois Tigeot 39118e26a6dSFrançois Tigeot static inline u8 392*9edbd4a0SFrançois Tigeot drm_dp_max_lane_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 39318e26a6dSFrançois Tigeot { 39418e26a6dSFrançois Tigeot return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK; 39518e26a6dSFrançois Tigeot } 39618e26a6dSFrançois Tigeot 397*9edbd4a0SFrançois Tigeot static inline bool 398*9edbd4a0SFrançois Tigeot drm_dp_enhanced_frame_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 399*9edbd4a0SFrançois Tigeot { 400*9edbd4a0SFrançois Tigeot return dpcd[DP_DPCD_REV] >= 0x11 && 401*9edbd4a0SFrançois Tigeot (dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP); 402*9edbd4a0SFrançois Tigeot } 403*9edbd4a0SFrançois Tigeot 40418e26a6dSFrançois Tigeot #endif /* _DRM_DP_HELPER_H_ */ 405