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 269edbd4a0SFrançois Tigeot #include <linux/types.h> 279edbd4a0SFrançois 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 40ba55f2f5SFrançois Tigeot * MST: Multistream Transport - part of DP 1.2a 4118e26a6dSFrançois Tigeot * 4218e26a6dSFrançois Tigeot * 1.2 formally includes both eDP and DPI definitions. 4318e26a6dSFrançois Tigeot */ 4418e26a6dSFrançois Tigeot 45477eb7f9SFrançois Tigeot #define DP_AUX_MAX_PAYLOAD_BYTES 16 46477eb7f9SFrançois Tigeot 479edbd4a0SFrançois Tigeot #define DP_AUX_I2C_WRITE 0x0 489edbd4a0SFrançois Tigeot #define DP_AUX_I2C_READ 0x1 49352ff8bdSFrançois Tigeot #define DP_AUX_I2C_WRITE_STATUS_UPDATE 0x2 509edbd4a0SFrançois Tigeot #define DP_AUX_I2C_MOT 0x4 519edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_WRITE 0x8 529edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_READ 0x9 5318e26a6dSFrançois Tigeot 549edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_ACK (0x0 << 0) 559edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_NACK (0x1 << 0) 569edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_DEFER (0x2 << 0) 579edbd4a0SFrançois Tigeot #define DP_AUX_NATIVE_REPLY_MASK (0x3 << 0) 5818e26a6dSFrançois Tigeot 599edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_ACK (0x0 << 2) 609edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_NACK (0x1 << 2) 619edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_DEFER (0x2 << 2) 629edbd4a0SFrançois Tigeot #define DP_AUX_I2C_REPLY_MASK (0x3 << 2) 6318e26a6dSFrançois Tigeot 6418e26a6dSFrançois Tigeot /* AUX CH addresses */ 6518e26a6dSFrançois Tigeot /* DPCD */ 6618e26a6dSFrançois Tigeot #define DP_DPCD_REV 0x000 6718e26a6dSFrançois Tigeot 6818e26a6dSFrançois Tigeot #define DP_MAX_LINK_RATE 0x001 6918e26a6dSFrançois Tigeot 7018e26a6dSFrançois Tigeot #define DP_MAX_LANE_COUNT 0x002 7118e26a6dSFrançois Tigeot # define DP_MAX_LANE_COUNT_MASK 0x1f 7218e26a6dSFrançois Tigeot # define DP_TPS3_SUPPORTED (1 << 6) /* 1.2 */ 7318e26a6dSFrançois Tigeot # define DP_ENHANCED_FRAME_CAP (1 << 7) 7418e26a6dSFrançois Tigeot 7518e26a6dSFrançois Tigeot #define DP_MAX_DOWNSPREAD 0x003 764be47400SFrançois Tigeot # define DP_MAX_DOWNSPREAD_0_5 (1 << 0) 7718e26a6dSFrançois Tigeot # define DP_NO_AUX_HANDSHAKE_LINK_TRAINING (1 << 6) 7818e26a6dSFrançois Tigeot 7918e26a6dSFrançois Tigeot #define DP_NORP 0x004 8018e26a6dSFrançois Tigeot 8118e26a6dSFrançois Tigeot #define DP_DOWNSTREAMPORT_PRESENT 0x005 8218e26a6dSFrançois Tigeot # define DP_DWN_STRM_PORT_PRESENT (1 << 0) 8318e26a6dSFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_MASK 0x06 849edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_DP (0 << 1) 859edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_ANALOG (1 << 1) 869edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_TMDS (2 << 1) 879edbd4a0SFrançois Tigeot # define DP_DWN_STRM_PORT_TYPE_OTHER (3 << 1) 8818e26a6dSFrançois Tigeot # define DP_FORMAT_CONVERSION (1 << 3) 8918e26a6dSFrançois Tigeot # define DP_DETAILED_CAP_INFO_AVAILABLE (1 << 4) /* DPI */ 9018e26a6dSFrançois Tigeot 9118e26a6dSFrançois Tigeot #define DP_MAIN_LINK_CHANNEL_CODING 0x006 9218e26a6dSFrançois Tigeot 9318e26a6dSFrançois Tigeot #define DP_DOWN_STREAM_PORT_COUNT 0x007 9418e26a6dSFrançois Tigeot # define DP_PORT_COUNT_MASK 0x0f 9518e26a6dSFrançois Tigeot # define DP_MSA_TIMING_PAR_IGNORED (1 << 6) /* eDP */ 9618e26a6dSFrançois Tigeot # define DP_OUI_SUPPORT (1 << 7) 9718e26a6dSFrançois Tigeot 98477eb7f9SFrançois Tigeot #define DP_RECEIVE_PORT_0_CAP_0 0x008 99477eb7f9SFrançois Tigeot # define DP_LOCAL_EDID_PRESENT (1 << 1) 100477eb7f9SFrançois Tigeot # define DP_ASSOCIATED_TO_PRECEDING_PORT (1 << 2) 101477eb7f9SFrançois Tigeot 102477eb7f9SFrançois Tigeot #define DP_RECEIVE_PORT_0_BUFFER_SIZE 0x009 103477eb7f9SFrançois Tigeot 104477eb7f9SFrançois Tigeot #define DP_RECEIVE_PORT_1_CAP_0 0x00a 105477eb7f9SFrançois Tigeot #define DP_RECEIVE_PORT_1_BUFFER_SIZE 0x00b 106477eb7f9SFrançois Tigeot 10718e26a6dSFrançois Tigeot #define DP_I2C_SPEED_CAP 0x00c /* DPI */ 10818e26a6dSFrançois Tigeot # define DP_I2C_SPEED_1K 0x01 10918e26a6dSFrançois Tigeot # define DP_I2C_SPEED_5K 0x02 11018e26a6dSFrançois Tigeot # define DP_I2C_SPEED_10K 0x04 11118e26a6dSFrançois Tigeot # define DP_I2C_SPEED_100K 0x08 11218e26a6dSFrançois Tigeot # define DP_I2C_SPEED_400K 0x10 11318e26a6dSFrançois Tigeot # define DP_I2C_SPEED_1M 0x20 11418e26a6dSFrançois Tigeot 11518e26a6dSFrançois Tigeot #define DP_EDP_CONFIGURATION_CAP 0x00d /* XXX 1.2? */ 116477eb7f9SFrançois Tigeot # define DP_ALTERNATE_SCRAMBLER_RESET_CAP (1 << 0) 117477eb7f9SFrançois Tigeot # define DP_FRAMING_CHANGE_CAP (1 << 1) 118477eb7f9SFrançois Tigeot # define DP_DPCD_DISPLAY_CONTROL_CAPABLE (1 << 3) /* edp v1.2 or higher */ 119477eb7f9SFrançois Tigeot 12018e26a6dSFrançois Tigeot #define DP_TRAINING_AUX_RD_INTERVAL 0x00e /* XXX 1.2? */ 12118e26a6dSFrançois Tigeot 122477eb7f9SFrançois Tigeot #define DP_ADAPTER_CAP 0x00f /* 1.2 */ 123477eb7f9SFrançois Tigeot # define DP_FORCE_LOAD_SENSE_CAP (1 << 0) 124477eb7f9SFrançois Tigeot # define DP_ALTERNATE_I2C_PATTERN_CAP (1 << 1) 125477eb7f9SFrançois Tigeot 126477eb7f9SFrançois Tigeot #define DP_SUPPORTED_LINK_RATES 0x010 /* eDP 1.4 */ 127477eb7f9SFrançois Tigeot # define DP_MAX_SUPPORTED_RATES 8 /* 16-bit little-endian */ 128477eb7f9SFrançois Tigeot 12918e26a6dSFrançois Tigeot /* Multiple stream transport */ 130ba55f2f5SFrançois Tigeot #define DP_FAUX_CAP 0x020 /* 1.2 */ 131ba55f2f5SFrançois Tigeot # define DP_FAUX_CAP_1 (1 << 0) 132ba55f2f5SFrançois Tigeot 13318e26a6dSFrançois Tigeot #define DP_MSTM_CAP 0x021 /* 1.2 */ 13418e26a6dSFrançois Tigeot # define DP_MST_CAP (1 << 0) 13518e26a6dSFrançois Tigeot 136477eb7f9SFrançois Tigeot #define DP_NUMBER_OF_AUDIO_ENDPOINTS 0x022 /* 1.2 */ 137477eb7f9SFrançois Tigeot 138477eb7f9SFrançois Tigeot /* AV_SYNC_DATA_BLOCK 1.2 */ 139477eb7f9SFrançois Tigeot #define DP_AV_GRANULARITY 0x023 140477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_MASK (0xf << 0) 141477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_3MS (0 << 0) 142477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_2MS (1 << 0) 143477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_1MS (2 << 0) 144477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_500US (3 << 0) 145477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_200US (4 << 0) 146477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_100US (5 << 0) 147477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_10US (6 << 0) 148477eb7f9SFrançois Tigeot # define DP_AG_FACTOR_1US (7 << 0) 149477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_MASK (0xf << 4) 150477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_3MS (0 << 4) 151477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_2MS (1 << 4) 152477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_1MS (2 << 4) 153477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_500US (3 << 4) 154477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_200US (4 << 4) 155477eb7f9SFrançois Tigeot # define DP_VG_FACTOR_100US (5 << 4) 156477eb7f9SFrançois Tigeot 157477eb7f9SFrançois Tigeot #define DP_AUD_DEC_LAT0 0x024 158477eb7f9SFrançois Tigeot #define DP_AUD_DEC_LAT1 0x025 159477eb7f9SFrançois Tigeot 160477eb7f9SFrançois Tigeot #define DP_AUD_PP_LAT0 0x026 161477eb7f9SFrançois Tigeot #define DP_AUD_PP_LAT1 0x027 162477eb7f9SFrançois Tigeot 163477eb7f9SFrançois Tigeot #define DP_VID_INTER_LAT 0x028 164477eb7f9SFrançois Tigeot 165477eb7f9SFrançois Tigeot #define DP_VID_PROG_LAT 0x029 166477eb7f9SFrançois Tigeot 167477eb7f9SFrançois Tigeot #define DP_REP_LAT 0x02a 168477eb7f9SFrançois Tigeot 169477eb7f9SFrançois Tigeot #define DP_AUD_DEL_INS0 0x02b 170477eb7f9SFrançois Tigeot #define DP_AUD_DEL_INS1 0x02c 171477eb7f9SFrançois Tigeot #define DP_AUD_DEL_INS2 0x02d 172477eb7f9SFrançois Tigeot /* End of AV_SYNC_DATA_BLOCK */ 173477eb7f9SFrançois Tigeot 174477eb7f9SFrançois Tigeot #define DP_RECEIVER_ALPM_CAP 0x02e /* eDP 1.4 */ 175477eb7f9SFrançois Tigeot # define DP_ALPM_CAP (1 << 0) 176477eb7f9SFrançois Tigeot 177477eb7f9SFrançois Tigeot #define DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP 0x02f /* eDP 1.4 */ 178477eb7f9SFrançois Tigeot # define DP_AUX_FRAME_SYNC_CAP (1 << 0) 179477eb7f9SFrançois Tigeot 180ba55f2f5SFrançois Tigeot #define DP_GUID 0x030 /* 1.2 */ 181ba55f2f5SFrançois Tigeot 18218e26a6dSFrançois Tigeot #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */ 18318e26a6dSFrançois Tigeot # define DP_PSR_IS_SUPPORTED 1 184477eb7f9SFrançois Tigeot # define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */ 185477eb7f9SFrançois Tigeot 18618e26a6dSFrançois Tigeot #define DP_PSR_CAPS 0x071 /* XXX 1.2? */ 18718e26a6dSFrançois Tigeot # define DP_PSR_NO_TRAIN_ON_EXIT 1 18818e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_330 (0 << 1) 18918e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_275 (1 << 1) 19018e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_220 (2 << 1) 19118e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_165 (3 << 1) 19218e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_110 (4 << 1) 19318e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_55 (5 << 1) 19418e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_0 (6 << 1) 19518e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_MASK (7 << 1) 19618e26a6dSFrançois Tigeot # define DP_PSR_SETUP_TIME_SHIFT 1 197*a85cb24fSFrançois Tigeot # define DP_PSR2_SU_Y_COORDINATE_REQUIRED (1 << 4) /* eDP 1.4a */ 198*a85cb24fSFrançois Tigeot # define DP_PSR2_SU_GRANULARITY_REQUIRED (1 << 5) /* eDP 1.4b */ 19918e26a6dSFrançois Tigeot /* 20018e26a6dSFrançois Tigeot * 0x80-0x8f describe downstream port capabilities, but there are two layouts 20118e26a6dSFrançois Tigeot * based on whether DP_DETAILED_CAP_INFO_AVAILABLE was set. If it was not, 20218e26a6dSFrançois Tigeot * each port's descriptor is one byte wide. If it was set, each port's is 20318e26a6dSFrançois Tigeot * four bytes wide, starting with the one byte from the base info. As of 20418e26a6dSFrançois Tigeot * DP interop v1.1a only VGA defines additional detail. 20518e26a6dSFrançois Tigeot */ 20618e26a6dSFrançois Tigeot 20718e26a6dSFrançois Tigeot /* offset 0 */ 20818e26a6dSFrançois Tigeot #define DP_DOWNSTREAM_PORT_0 0x80 20918e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_MASK (7 << 0) 21018e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_DP 0 21118e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_VGA 1 21218e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_DVI 2 21318e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_HDMI 3 21418e26a6dSFrançois Tigeot # define DP_DS_PORT_TYPE_NON_EDID 4 2151dedbd3bSFrançois Tigeot # define DP_DS_PORT_TYPE_DP_DUALMODE 5 2161dedbd3bSFrançois Tigeot # define DP_DS_PORT_TYPE_WIRELESS 6 21718e26a6dSFrançois Tigeot # define DP_DS_PORT_HPD (1 << 3) 21818e26a6dSFrançois Tigeot /* offset 1 for VGA is maximum megapixels per second / 8 */ 21918e26a6dSFrançois Tigeot /* offset 2 */ 2201dedbd3bSFrançois Tigeot # define DP_DS_MAX_BPC_MASK (3 << 0) 2211dedbd3bSFrançois Tigeot # define DP_DS_8BPC 0 2221dedbd3bSFrançois Tigeot # define DP_DS_10BPC 1 2231dedbd3bSFrançois Tigeot # define DP_DS_12BPC 2 2241dedbd3bSFrançois Tigeot # define DP_DS_16BPC 3 22518e26a6dSFrançois Tigeot 22618e26a6dSFrançois Tigeot /* link configuration */ 22718e26a6dSFrançois Tigeot #define DP_LINK_BW_SET 0x100 228477eb7f9SFrançois Tigeot # define DP_LINK_RATE_TABLE 0x00 /* eDP 1.4 */ 22918e26a6dSFrançois Tigeot # define DP_LINK_BW_1_62 0x06 23018e26a6dSFrançois Tigeot # define DP_LINK_BW_2_7 0x0a 23118e26a6dSFrançois Tigeot # define DP_LINK_BW_5_4 0x14 /* 1.2 */ 23218e26a6dSFrançois Tigeot 23318e26a6dSFrançois Tigeot #define DP_LANE_COUNT_SET 0x101 23418e26a6dSFrançois Tigeot # define DP_LANE_COUNT_MASK 0x0f 23518e26a6dSFrançois Tigeot # define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7) 23618e26a6dSFrançois Tigeot 23718e26a6dSFrançois Tigeot #define DP_TRAINING_PATTERN_SET 0x102 23818e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_DISABLE 0 23918e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_1 1 24018e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_2 2 24118e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_3 3 /* 1.2 */ 24218e26a6dSFrançois Tigeot # define DP_TRAINING_PATTERN_MASK 0x3 24318e26a6dSFrançois Tigeot 244477eb7f9SFrançois Tigeot /* DPCD 1.1 only. For DPCD >= 1.2 see per-lane DP_LINK_QUAL_LANEn_SET */ 245477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_11_DISABLE (0 << 2) 246477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_11_D10_2 (1 << 2) 247477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_11_ERROR_RATE (2 << 2) 248477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_11_PRBS7 (3 << 2) 249477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_11_MASK (3 << 2) 25018e26a6dSFrançois Tigeot 25118e26a6dSFrançois Tigeot # define DP_RECOVERED_CLOCK_OUT_EN (1 << 4) 25218e26a6dSFrançois Tigeot # define DP_LINK_SCRAMBLING_DISABLE (1 << 5) 25318e26a6dSFrançois Tigeot 25418e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_BOTH (0 << 6) 25518e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_DISPARITY (1 << 6) 25618e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_SYMBOL (2 << 6) 25718e26a6dSFrançois Tigeot # define DP_SYMBOL_ERROR_COUNT_MASK (3 << 6) 25818e26a6dSFrançois Tigeot 25918e26a6dSFrançois Tigeot #define DP_TRAINING_LANE0_SET 0x103 26018e26a6dSFrançois Tigeot #define DP_TRAINING_LANE1_SET 0x104 26118e26a6dSFrançois Tigeot #define DP_TRAINING_LANE2_SET 0x105 26218e26a6dSFrançois Tigeot #define DP_TRAINING_LANE3_SET 0x106 26318e26a6dSFrançois Tigeot 26418e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_MASK 0x3 26518e26a6dSFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_SHIFT 0 26618e26a6dSFrançois Tigeot # define DP_TRAIN_MAX_SWING_REACHED (1 << 2) 2671b13d190SFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_LEVEL_0 (0 << 0) 2681b13d190SFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_LEVEL_1 (1 << 0) 2691b13d190SFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_LEVEL_2 (2 << 0) 2701b13d190SFrançois Tigeot # define DP_TRAIN_VOLTAGE_SWING_LEVEL_3 (3 << 0) 27118e26a6dSFrançois Tigeot 27218e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_MASK (3 << 3) 2731b13d190SFrançois Tigeot # define DP_TRAIN_PRE_EMPH_LEVEL_0 (0 << 3) 2741b13d190SFrançois Tigeot # define DP_TRAIN_PRE_EMPH_LEVEL_1 (1 << 3) 2751b13d190SFrançois Tigeot # define DP_TRAIN_PRE_EMPH_LEVEL_2 (2 << 3) 2761b13d190SFrançois Tigeot # define DP_TRAIN_PRE_EMPH_LEVEL_3 (3 << 3) 27718e26a6dSFrançois Tigeot 27818e26a6dSFrançois Tigeot # define DP_TRAIN_PRE_EMPHASIS_SHIFT 3 27918e26a6dSFrançois Tigeot # define DP_TRAIN_MAX_PRE_EMPHASIS_REACHED (1 << 5) 28018e26a6dSFrançois Tigeot 28118e26a6dSFrançois Tigeot #define DP_DOWNSPREAD_CTRL 0x107 28218e26a6dSFrançois Tigeot # define DP_SPREAD_AMP_0_5 (1 << 4) 28318e26a6dSFrançois Tigeot # define DP_MSA_TIMING_PAR_IGNORE_EN (1 << 7) /* eDP */ 28418e26a6dSFrançois Tigeot 28518e26a6dSFrançois Tigeot #define DP_MAIN_LINK_CHANNEL_CODING_SET 0x108 28618e26a6dSFrançois Tigeot # define DP_SET_ANSI_8B10B (1 << 0) 28718e26a6dSFrançois Tigeot 28818e26a6dSFrançois Tigeot #define DP_I2C_SPEED_CONTROL_STATUS 0x109 /* DPI */ 28918e26a6dSFrançois Tigeot /* bitmask as for DP_I2C_SPEED_CAP */ 29018e26a6dSFrançois Tigeot 29118e26a6dSFrançois Tigeot #define DP_EDP_CONFIGURATION_SET 0x10a /* XXX 1.2? */ 292477eb7f9SFrançois Tigeot # define DP_ALTERNATE_SCRAMBLER_RESET_ENABLE (1 << 0) 293477eb7f9SFrançois Tigeot # define DP_FRAMING_CHANGE_ENABLE (1 << 1) 294477eb7f9SFrançois Tigeot # define DP_PANEL_SELF_TEST_ENABLE (1 << 7) 295477eb7f9SFrançois Tigeot 296477eb7f9SFrançois Tigeot #define DP_LINK_QUAL_LANE0_SET 0x10b /* DPCD >= 1.2 */ 297477eb7f9SFrançois Tigeot #define DP_LINK_QUAL_LANE1_SET 0x10c 298477eb7f9SFrançois Tigeot #define DP_LINK_QUAL_LANE2_SET 0x10d 299477eb7f9SFrançois Tigeot #define DP_LINK_QUAL_LANE3_SET 0x10e 300477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_DISABLE 0 301477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_D10_2 1 302477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_ERROR_RATE 2 303477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_PRBS7 3 304477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_80BIT_CUSTOM 4 305477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_HBR2_EYE 5 306477eb7f9SFrançois Tigeot # define DP_LINK_QUAL_PATTERN_MASK 7 307477eb7f9SFrançois Tigeot 308477eb7f9SFrançois Tigeot #define DP_TRAINING_LANE0_1_SET2 0x10f 309477eb7f9SFrançois Tigeot #define DP_TRAINING_LANE2_3_SET2 0x110 310477eb7f9SFrançois Tigeot # define DP_LANE02_POST_CURSOR2_SET_MASK (3 << 0) 311477eb7f9SFrançois Tigeot # define DP_LANE02_MAX_POST_CURSOR2_REACHED (1 << 2) 312477eb7f9SFrançois Tigeot # define DP_LANE13_POST_CURSOR2_SET_MASK (3 << 4) 313477eb7f9SFrançois Tigeot # define DP_LANE13_MAX_POST_CURSOR2_REACHED (1 << 6) 31418e26a6dSFrançois Tigeot 31518e26a6dSFrançois Tigeot #define DP_MSTM_CTRL 0x111 /* 1.2 */ 31618e26a6dSFrançois Tigeot # define DP_MST_EN (1 << 0) 31718e26a6dSFrançois Tigeot # define DP_UP_REQ_EN (1 << 1) 31818e26a6dSFrançois Tigeot # define DP_UPSTREAM_IS_SRC (1 << 2) 31918e26a6dSFrançois Tigeot 320477eb7f9SFrançois Tigeot #define DP_AUDIO_DELAY0 0x112 /* 1.2 */ 321477eb7f9SFrançois Tigeot #define DP_AUDIO_DELAY1 0x113 322477eb7f9SFrançois Tigeot #define DP_AUDIO_DELAY2 0x114 323477eb7f9SFrançois Tigeot 324477eb7f9SFrançois Tigeot #define DP_LINK_RATE_SET 0x115 /* eDP 1.4 */ 325477eb7f9SFrançois Tigeot # define DP_LINK_RATE_SET_SHIFT 0 326477eb7f9SFrançois Tigeot # define DP_LINK_RATE_SET_MASK (7 << 0) 327477eb7f9SFrançois Tigeot 328477eb7f9SFrançois Tigeot #define DP_RECEIVER_ALPM_CONFIG 0x116 /* eDP 1.4 */ 329477eb7f9SFrançois Tigeot # define DP_ALPM_ENABLE (1 << 0) 330477eb7f9SFrançois Tigeot # define DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE (1 << 1) 331477eb7f9SFrançois Tigeot 332477eb7f9SFrançois Tigeot #define DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF 0x117 /* eDP 1.4 */ 333477eb7f9SFrançois Tigeot # define DP_AUX_FRAME_SYNC_ENABLE (1 << 0) 334477eb7f9SFrançois Tigeot # define DP_IRQ_HPD_ENABLE (1 << 1) 335477eb7f9SFrançois Tigeot 336477eb7f9SFrançois Tigeot #define DP_UPSTREAM_DEVICE_DP_PWR_NEED 0x118 /* 1.2 */ 337477eb7f9SFrançois Tigeot # define DP_PWR_NOT_NEEDED (1 << 0) 338477eb7f9SFrançois Tigeot 339477eb7f9SFrançois Tigeot #define DP_AUX_FRAME_SYNC_VALUE 0x15c /* eDP 1.4 */ 340477eb7f9SFrançois Tigeot # define DP_AUX_FRAME_SYNC_VALID (1 << 0) 341477eb7f9SFrançois Tigeot 34218e26a6dSFrançois Tigeot #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */ 34318e26a6dSFrançois Tigeot # define DP_PSR_ENABLE (1 << 0) 34418e26a6dSFrançois Tigeot # define DP_PSR_MAIN_LINK_ACTIVE (1 << 1) 34518e26a6dSFrançois Tigeot # define DP_PSR_CRC_VERIFICATION (1 << 2) 34618e26a6dSFrançois Tigeot # define DP_PSR_FRAME_CAPTURE (1 << 3) 347477eb7f9SFrançois Tigeot # define DP_PSR_SELECTIVE_UPDATE (1 << 4) 348477eb7f9SFrançois Tigeot # define DP_PSR_IRQ_HPD_WITH_CRC_ERRORS (1 << 5) 34918e26a6dSFrançois Tigeot 350ba55f2f5SFrançois Tigeot #define DP_ADAPTER_CTRL 0x1a0 351ba55f2f5SFrançois Tigeot # define DP_ADAPTER_CTRL_FORCE_LOAD_SENSE (1 << 0) 352ba55f2f5SFrançois Tigeot 353ba55f2f5SFrançois Tigeot #define DP_BRANCH_DEVICE_CTRL 0x1a1 354ba55f2f5SFrançois Tigeot # define DP_BRANCH_DEVICE_IRQ_HPD (1 << 0) 355ba55f2f5SFrançois Tigeot 356ba55f2f5SFrançois Tigeot #define DP_PAYLOAD_ALLOCATE_SET 0x1c0 357ba55f2f5SFrançois Tigeot #define DP_PAYLOAD_ALLOCATE_START_TIME_SLOT 0x1c1 358ba55f2f5SFrançois Tigeot #define DP_PAYLOAD_ALLOCATE_TIME_SLOT_COUNT 0x1c2 359ba55f2f5SFrançois Tigeot 36018e26a6dSFrançois Tigeot #define DP_SINK_COUNT 0x200 36118e26a6dSFrançois Tigeot /* prior to 1.2 bit 7 was reserved mbz */ 36218e26a6dSFrançois Tigeot # define DP_GET_SINK_COUNT(x) ((((x) & 0x80) >> 1) | ((x) & 0x3f)) 36318e26a6dSFrançois Tigeot # define DP_SINK_CP_READY (1 << 6) 36418e26a6dSFrançois Tigeot 36518e26a6dSFrançois Tigeot #define DP_DEVICE_SERVICE_IRQ_VECTOR 0x201 36618e26a6dSFrançois Tigeot # define DP_REMOTE_CONTROL_COMMAND_PENDING (1 << 0) 36718e26a6dSFrançois Tigeot # define DP_AUTOMATED_TEST_REQUEST (1 << 1) 36818e26a6dSFrançois Tigeot # define DP_CP_IRQ (1 << 2) 369ba55f2f5SFrançois Tigeot # define DP_MCCS_IRQ (1 << 3) 370ba55f2f5SFrançois Tigeot # define DP_DOWN_REP_MSG_RDY (1 << 4) /* 1.2 MST */ 371ba55f2f5SFrançois Tigeot # define DP_UP_REQ_MSG_RDY (1 << 5) /* 1.2 MST */ 37218e26a6dSFrançois Tigeot # define DP_SINK_SPECIFIC_IRQ (1 << 6) 37318e26a6dSFrançois Tigeot 37418e26a6dSFrançois Tigeot #define DP_LANE0_1_STATUS 0x202 37518e26a6dSFrançois Tigeot #define DP_LANE2_3_STATUS 0x203 37618e26a6dSFrançois Tigeot # define DP_LANE_CR_DONE (1 << 0) 37718e26a6dSFrançois Tigeot # define DP_LANE_CHANNEL_EQ_DONE (1 << 1) 37818e26a6dSFrançois Tigeot # define DP_LANE_SYMBOL_LOCKED (1 << 2) 37918e26a6dSFrançois Tigeot 38018e26a6dSFrançois Tigeot #define DP_CHANNEL_EQ_BITS (DP_LANE_CR_DONE | \ 38118e26a6dSFrançois Tigeot DP_LANE_CHANNEL_EQ_DONE | \ 38218e26a6dSFrançois Tigeot DP_LANE_SYMBOL_LOCKED) 38318e26a6dSFrançois Tigeot 38418e26a6dSFrançois Tigeot #define DP_LANE_ALIGN_STATUS_UPDATED 0x204 38518e26a6dSFrançois Tigeot 38618e26a6dSFrançois Tigeot #define DP_INTERLANE_ALIGN_DONE (1 << 0) 38718e26a6dSFrançois Tigeot #define DP_DOWNSTREAM_PORT_STATUS_CHANGED (1 << 6) 38818e26a6dSFrançois Tigeot #define DP_LINK_STATUS_UPDATED (1 << 7) 38918e26a6dSFrançois Tigeot 39018e26a6dSFrançois Tigeot #define DP_SINK_STATUS 0x205 39118e26a6dSFrançois Tigeot 39218e26a6dSFrançois Tigeot #define DP_RECEIVE_PORT_0_STATUS (1 << 0) 39318e26a6dSFrançois Tigeot #define DP_RECEIVE_PORT_1_STATUS (1 << 1) 39418e26a6dSFrançois Tigeot 39518e26a6dSFrançois Tigeot #define DP_ADJUST_REQUEST_LANE0_1 0x206 39618e26a6dSFrançois Tigeot #define DP_ADJUST_REQUEST_LANE2_3 0x207 39718e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03 39818e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0 39918e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c 40018e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2 40118e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30 40218e26a6dSFrançois Tigeot # define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4 40318e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0 40418e26a6dSFrançois Tigeot # define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6 40518e26a6dSFrançois Tigeot 40618e26a6dSFrançois Tigeot #define DP_TEST_REQUEST 0x218 40718e26a6dSFrançois Tigeot # define DP_TEST_LINK_TRAINING (1 << 0) 4089edbd4a0SFrançois Tigeot # define DP_TEST_LINK_VIDEO_PATTERN (1 << 1) 40918e26a6dSFrançois Tigeot # define DP_TEST_LINK_EDID_READ (1 << 2) 41018e26a6dSFrançois Tigeot # define DP_TEST_LINK_PHY_TEST_PATTERN (1 << 3) /* DPCD >= 1.1 */ 4119edbd4a0SFrançois Tigeot # define DP_TEST_LINK_FAUX_PATTERN (1 << 4) /* DPCD >= 1.2 */ 41218e26a6dSFrançois Tigeot 41318e26a6dSFrançois Tigeot #define DP_TEST_LINK_RATE 0x219 41418e26a6dSFrançois Tigeot # define DP_LINK_RATE_162 (0x6) 41518e26a6dSFrançois Tigeot # define DP_LINK_RATE_27 (0xa) 41618e26a6dSFrançois Tigeot 41718e26a6dSFrançois Tigeot #define DP_TEST_LANE_COUNT 0x220 41818e26a6dSFrançois Tigeot 41918e26a6dSFrançois Tigeot #define DP_TEST_PATTERN 0x221 420*a85cb24fSFrançois Tigeot # define DP_NO_TEST_PATTERN 0x0 421*a85cb24fSFrançois Tigeot # define DP_COLOR_RAMP 0x1 422*a85cb24fSFrançois Tigeot # define DP_BLACK_AND_WHITE_VERTICAL_LINES 0x2 423*a85cb24fSFrançois Tigeot # define DP_COLOR_SQUARE 0x3 424*a85cb24fSFrançois Tigeot 425*a85cb24fSFrançois Tigeot #define DP_TEST_H_TOTAL_HI 0x222 426*a85cb24fSFrançois Tigeot #define DP_TEST_H_TOTAL_LO 0x223 427*a85cb24fSFrançois Tigeot 428*a85cb24fSFrançois Tigeot #define DP_TEST_V_TOTAL_HI 0x224 429*a85cb24fSFrançois Tigeot #define DP_TEST_V_TOTAL_LO 0x225 430*a85cb24fSFrançois Tigeot 431*a85cb24fSFrançois Tigeot #define DP_TEST_H_START_HI 0x226 432*a85cb24fSFrançois Tigeot #define DP_TEST_H_START_LO 0x227 433*a85cb24fSFrançois Tigeot 434*a85cb24fSFrançois Tigeot #define DP_TEST_V_START_HI 0x228 435*a85cb24fSFrançois Tigeot #define DP_TEST_V_START_LO 0x229 436*a85cb24fSFrançois Tigeot 437*a85cb24fSFrançois Tigeot #define DP_TEST_HSYNC_HI 0x22A 438*a85cb24fSFrançois Tigeot # define DP_TEST_HSYNC_POLARITY (1 << 7) 439*a85cb24fSFrançois Tigeot # define DP_TEST_HSYNC_WIDTH_HI_MASK (127 << 0) 440*a85cb24fSFrançois Tigeot #define DP_TEST_HSYNC_WIDTH_LO 0x22B 441*a85cb24fSFrançois Tigeot 442*a85cb24fSFrançois Tigeot #define DP_TEST_VSYNC_HI 0x22C 443*a85cb24fSFrançois Tigeot # define DP_TEST_VSYNC_POLARITY (1 << 7) 444*a85cb24fSFrançois Tigeot # define DP_TEST_VSYNC_WIDTH_HI_MASK (127 << 0) 445*a85cb24fSFrançois Tigeot #define DP_TEST_VSYNC_WIDTH_LO 0x22D 446*a85cb24fSFrançois Tigeot 447*a85cb24fSFrançois Tigeot #define DP_TEST_H_WIDTH_HI 0x22E 448*a85cb24fSFrançois Tigeot #define DP_TEST_H_WIDTH_LO 0x22F 449*a85cb24fSFrançois Tigeot 450*a85cb24fSFrançois Tigeot #define DP_TEST_V_HEIGHT_HI 0x230 451*a85cb24fSFrançois Tigeot #define DP_TEST_V_HEIGHT_LO 0x231 452*a85cb24fSFrançois Tigeot 453*a85cb24fSFrançois Tigeot #define DP_TEST_MISC0 0x232 454*a85cb24fSFrançois Tigeot # define DP_TEST_SYNC_CLOCK (1 << 0) 455*a85cb24fSFrançois Tigeot # define DP_TEST_COLOR_FORMAT_MASK (3 << 1) 456*a85cb24fSFrançois Tigeot # define DP_TEST_COLOR_FORMAT_SHIFT 1 457*a85cb24fSFrançois Tigeot # define DP_COLOR_FORMAT_RGB (0 << 1) 458*a85cb24fSFrançois Tigeot # define DP_COLOR_FORMAT_YCbCr422 (1 << 1) 459*a85cb24fSFrançois Tigeot # define DP_COLOR_FORMAT_YCbCr444 (2 << 1) 460*a85cb24fSFrançois Tigeot # define DP_TEST_DYNAMIC_RANGE_CEA (1 << 3) 461*a85cb24fSFrançois Tigeot # define DP_TEST_YCBCR_COEFFICIENTS (1 << 4) 462*a85cb24fSFrançois Tigeot # define DP_YCBCR_COEFFICIENTS_ITU601 (0 << 4) 463*a85cb24fSFrançois Tigeot # define DP_YCBCR_COEFFICIENTS_ITU709 (1 << 4) 464*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_MASK (7 << 5) 465*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_SHIFT 5 466*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_6 (0 << 5) 467*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_8 (1 << 5) 468*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_10 (2 << 5) 469*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_12 (3 << 5) 470*a85cb24fSFrançois Tigeot # define DP_TEST_BIT_DEPTH_16 (4 << 5) 471*a85cb24fSFrançois Tigeot 472*a85cb24fSFrançois Tigeot #define DP_TEST_MISC1 0x233 473*a85cb24fSFrançois Tigeot # define DP_TEST_REFRESH_DENOMINATOR (1 << 0) 474*a85cb24fSFrançois Tigeot # define DP_TEST_INTERLACED (1 << 1) 475*a85cb24fSFrançois Tigeot 476*a85cb24fSFrançois Tigeot #define DP_TEST_REFRESH_RATE_NUMERATOR 0x234 47718e26a6dSFrançois Tigeot 478ba55f2f5SFrançois Tigeot #define DP_TEST_CRC_R_CR 0x240 479ba55f2f5SFrançois Tigeot #define DP_TEST_CRC_G_Y 0x242 480ba55f2f5SFrançois Tigeot #define DP_TEST_CRC_B_CB 0x244 481ba55f2f5SFrançois Tigeot 482ba55f2f5SFrançois Tigeot #define DP_TEST_SINK_MISC 0x246 483ba55f2f5SFrançois Tigeot # define DP_TEST_CRC_SUPPORTED (1 << 5) 484352ff8bdSFrançois Tigeot # define DP_TEST_COUNT_MASK 0xf 485ba55f2f5SFrançois Tigeot 48618e26a6dSFrançois Tigeot #define DP_TEST_RESPONSE 0x260 48718e26a6dSFrançois Tigeot # define DP_TEST_ACK (1 << 0) 48818e26a6dSFrançois Tigeot # define DP_TEST_NAK (1 << 1) 48918e26a6dSFrançois Tigeot # define DP_TEST_EDID_CHECKSUM_WRITE (1 << 2) 49018e26a6dSFrançois Tigeot 491ba55f2f5SFrançois Tigeot #define DP_TEST_EDID_CHECKSUM 0x261 492ba55f2f5SFrançois Tigeot 493ba55f2f5SFrançois Tigeot #define DP_TEST_SINK 0x270 494ba55f2f5SFrançois Tigeot # define DP_TEST_SINK_START (1 << 0) 495ba55f2f5SFrançois Tigeot 496ba55f2f5SFrançois Tigeot #define DP_PAYLOAD_TABLE_UPDATE_STATUS 0x2c0 /* 1.2 MST */ 497ba55f2f5SFrançois Tigeot # define DP_PAYLOAD_TABLE_UPDATED (1 << 0) 498ba55f2f5SFrançois Tigeot # define DP_PAYLOAD_ACT_HANDLED (1 << 1) 499ba55f2f5SFrançois Tigeot 500ba55f2f5SFrançois Tigeot #define DP_VC_PAYLOAD_ID_SLOT_1 0x2c1 /* 1.2 MST */ 501ba55f2f5SFrançois Tigeot /* up to ID_SLOT_63 at 0x2ff */ 502ba55f2f5SFrançois Tigeot 50318e26a6dSFrançois Tigeot #define DP_SOURCE_OUI 0x300 50418e26a6dSFrançois Tigeot #define DP_SINK_OUI 0x400 50518e26a6dSFrançois Tigeot #define DP_BRANCH_OUI 0x500 5061dedbd3bSFrançois Tigeot #define DP_BRANCH_ID 0x503 5071dedbd3bSFrançois Tigeot #define DP_BRANCH_HW_REV 0x509 5081dedbd3bSFrançois Tigeot #define DP_BRANCH_SW_REV 0x50A 50918e26a6dSFrançois Tigeot 51018e26a6dSFrançois Tigeot #define DP_SET_POWER 0x600 51118e26a6dSFrançois Tigeot # define DP_SET_POWER_D0 0x1 51218e26a6dSFrançois Tigeot # define DP_SET_POWER_D3 0x2 513ba55f2f5SFrançois Tigeot # define DP_SET_POWER_MASK 0x3 514ba55f2f5SFrançois Tigeot 515477eb7f9SFrançois Tigeot #define DP_EDP_DPCD_REV 0x700 /* eDP 1.2 */ 516477eb7f9SFrançois Tigeot # define DP_EDP_11 0x00 517477eb7f9SFrançois Tigeot # define DP_EDP_12 0x01 518477eb7f9SFrançois Tigeot # define DP_EDP_13 0x02 519477eb7f9SFrançois Tigeot # define DP_EDP_14 0x03 520477eb7f9SFrançois Tigeot 521477eb7f9SFrançois Tigeot #define DP_EDP_GENERAL_CAP_1 0x701 522c0e85e96SFrançois Tigeot # define DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP (1 << 0) 523c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_PIN_ENABLE_CAP (1 << 1) 524c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_AUX_ENABLE_CAP (1 << 2) 525c0e85e96SFrançois Tigeot # define DP_EDP_PANEL_SELF_TEST_PIN_ENABLE_CAP (1 << 3) 526c0e85e96SFrançois Tigeot # define DP_EDP_PANEL_SELF_TEST_AUX_ENABLE_CAP (1 << 4) 527c0e85e96SFrançois Tigeot # define DP_EDP_FRC_ENABLE_CAP (1 << 5) 528c0e85e96SFrançois Tigeot # define DP_EDP_COLOR_ENGINE_CAP (1 << 6) 529c0e85e96SFrançois Tigeot # define DP_EDP_SET_POWER_CAP (1 << 7) 530477eb7f9SFrançois Tigeot 531477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_ADJUSTMENT_CAP 0x702 532c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_BRIGHTNESS_PWM_PIN_CAP (1 << 0) 533c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP (1 << 1) 534c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_BRIGHTNESS_BYTE_COUNT (1 << 2) 535c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_AUX_PWM_PRODUCT_CAP (1 << 3) 536c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU_CAP (1 << 4) 537c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_FREQ_AUX_SET_CAP (1 << 5) 538c0e85e96SFrançois Tigeot # define DP_EDP_DYNAMIC_BACKLIGHT_CAP (1 << 6) 539c0e85e96SFrançois Tigeot # define DP_EDP_VBLANK_BACKLIGHT_UPDATE_CAP (1 << 7) 540477eb7f9SFrançois Tigeot 541477eb7f9SFrançois Tigeot #define DP_EDP_GENERAL_CAP_2 0x703 542c0e85e96SFrançois Tigeot # define DP_EDP_OVERDRIVE_ENGINE_ENABLED (1 << 0) 543477eb7f9SFrançois Tigeot 544477eb7f9SFrançois Tigeot #define DP_EDP_GENERAL_CAP_3 0x704 /* eDP 1.4 */ 545c0e85e96SFrançois Tigeot # define DP_EDP_X_REGION_CAP_MASK (0xf << 0) 546c0e85e96SFrançois Tigeot # define DP_EDP_X_REGION_CAP_SHIFT 0 547c0e85e96SFrançois Tigeot # define DP_EDP_Y_REGION_CAP_MASK (0xf << 4) 548c0e85e96SFrançois Tigeot # define DP_EDP_Y_REGION_CAP_SHIFT 4 549477eb7f9SFrançois Tigeot 550477eb7f9SFrançois Tigeot #define DP_EDP_DISPLAY_CONTROL_REGISTER 0x720 551c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_ENABLE (1 << 0) 552c0e85e96SFrançois Tigeot # define DP_EDP_BLACK_VIDEO_ENABLE (1 << 1) 553c0e85e96SFrançois Tigeot # define DP_EDP_FRC_ENABLE (1 << 2) 554c0e85e96SFrançois Tigeot # define DP_EDP_COLOR_ENGINE_ENABLE (1 << 3) 555c0e85e96SFrançois Tigeot # define DP_EDP_VBLANK_BACKLIGHT_UPDATE_ENABLE (1 << 7) 556477eb7f9SFrançois Tigeot 557477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_MODE_SET_REGISTER 0x721 558c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_CONTROL_MODE_MASK (3 << 0) 559c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_CONTROL_MODE_PWM (0 << 0) 560c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_CONTROL_MODE_PRESET (1 << 0) 561c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_CONTROL_MODE_DPCD (2 << 0) 562c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_CONTROL_MODE_PRODUCT (3 << 0) 563c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU_ENABLE (1 << 2) 564c0e85e96SFrançois Tigeot # define DP_EDP_BACKLIGHT_FREQ_AUX_SET_ENABLE (1 << 3) 565c0e85e96SFrançois Tigeot # define DP_EDP_DYNAMIC_BACKLIGHT_ENABLE (1 << 4) 566c0e85e96SFrançois Tigeot # define DP_EDP_REGIONAL_BACKLIGHT_ENABLE (1 << 5) 567c0e85e96SFrançois Tigeot # define DP_EDP_UPDATE_REGION_BRIGHTNESS (1 << 6) /* eDP 1.4 */ 568477eb7f9SFrançois Tigeot 569477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_BRIGHTNESS_MSB 0x722 570477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_BRIGHTNESS_LSB 0x723 571477eb7f9SFrançois Tigeot 572477eb7f9SFrançois Tigeot #define DP_EDP_PWMGEN_BIT_COUNT 0x724 573477eb7f9SFrançois Tigeot #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN 0x725 574477eb7f9SFrançois Tigeot #define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX 0x726 575477eb7f9SFrançois Tigeot 576477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_CONTROL_STATUS 0x727 577477eb7f9SFrançois Tigeot 578477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_SET 0x728 579477eb7f9SFrançois Tigeot 580477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB 0x72a 581477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID 0x72b 582477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_LSB 0x72c 583477eb7f9SFrançois Tigeot 584477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_CAP_MAX_MSB 0x72d 585477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_CAP_MAX_MID 0x72e 586477eb7f9SFrançois Tigeot #define DP_EDP_BACKLIGHT_FREQ_CAP_MAX_LSB 0x72f 587477eb7f9SFrançois Tigeot 588477eb7f9SFrançois Tigeot #define DP_EDP_DBC_MINIMUM_BRIGHTNESS_SET 0x732 589477eb7f9SFrançois Tigeot #define DP_EDP_DBC_MAXIMUM_BRIGHTNESS_SET 0x733 590477eb7f9SFrançois Tigeot 591477eb7f9SFrançois Tigeot #define DP_EDP_REGIONAL_BACKLIGHT_BASE 0x740 /* eDP 1.4 */ 592477eb7f9SFrançois Tigeot #define DP_EDP_REGIONAL_BACKLIGHT_0 0x741 /* eDP 1.4 */ 593477eb7f9SFrançois Tigeot 594ba55f2f5SFrançois Tigeot #define DP_SIDEBAND_MSG_DOWN_REQ_BASE 0x1000 /* 1.2 MST */ 595ba55f2f5SFrançois Tigeot #define DP_SIDEBAND_MSG_UP_REP_BASE 0x1200 /* 1.2 MST */ 596ba55f2f5SFrançois Tigeot #define DP_SIDEBAND_MSG_DOWN_REP_BASE 0x1400 /* 1.2 MST */ 597ba55f2f5SFrançois Tigeot #define DP_SIDEBAND_MSG_UP_REQ_BASE 0x1600 /* 1.2 MST */ 598ba55f2f5SFrançois Tigeot 599ba55f2f5SFrançois Tigeot #define DP_SINK_COUNT_ESI 0x2002 /* 1.2 */ 600ba55f2f5SFrançois Tigeot /* 0-5 sink count */ 601ba55f2f5SFrançois Tigeot # define DP_SINK_COUNT_CP_READY (1 << 6) 602ba55f2f5SFrançois Tigeot 603ba55f2f5SFrançois Tigeot #define DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0 0x2003 /* 1.2 */ 604ba55f2f5SFrançois Tigeot 605ba55f2f5SFrançois Tigeot #define DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1 0x2004 /* 1.2 */ 606ba55f2f5SFrançois Tigeot 607ba55f2f5SFrançois Tigeot #define DP_LINK_SERVICE_IRQ_VECTOR_ESI0 0x2005 /* 1.2 */ 60818e26a6dSFrançois Tigeot 60918e26a6dSFrançois Tigeot #define DP_PSR_ERROR_STATUS 0x2006 /* XXX 1.2? */ 61018e26a6dSFrançois Tigeot # define DP_PSR_LINK_CRC_ERROR (1 << 0) 61118e26a6dSFrançois Tigeot # define DP_PSR_RFB_STORAGE_ERROR (1 << 1) 612477eb7f9SFrançois Tigeot # define DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR (1 << 2) /* eDP 1.4 */ 61318e26a6dSFrançois Tigeot 61418e26a6dSFrançois Tigeot #define DP_PSR_ESI 0x2007 /* XXX 1.2? */ 61518e26a6dSFrançois Tigeot # define DP_PSR_CAPS_CHANGE (1 << 0) 61618e26a6dSFrançois Tigeot 61718e26a6dSFrançois Tigeot #define DP_PSR_STATUS 0x2008 /* XXX 1.2? */ 61818e26a6dSFrançois Tigeot # define DP_PSR_SINK_INACTIVE 0 61918e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_SRC_SYNCED 1 62018e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_RFB 2 62118e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_SINK_SYNCED 3 62218e26a6dSFrançois Tigeot # define DP_PSR_SINK_ACTIVE_RESYNC 4 62318e26a6dSFrançois Tigeot # define DP_PSR_SINK_INTERNAL_ERROR 7 62418e26a6dSFrançois Tigeot # define DP_PSR_SINK_STATE_MASK 0x07 62518e26a6dSFrançois Tigeot 626477eb7f9SFrançois Tigeot #define DP_RECEIVER_ALPM_STATUS 0x200b /* eDP 1.4 */ 627477eb7f9SFrançois Tigeot # define DP_ALPM_LOCK_TIMEOUT_ERROR (1 << 0) 628477eb7f9SFrançois Tigeot 629*a85cb24fSFrançois Tigeot #define DP_DPRX_FEATURE_ENUMERATION_LIST 0x2210 /* DP 1.3 */ 630*a85cb24fSFrançois Tigeot # define DP_GTC_CAP (1 << 0) /* DP 1.3 */ 631*a85cb24fSFrançois Tigeot # define DP_SST_SPLIT_SDP_CAP (1 << 1) /* DP 1.4 */ 632*a85cb24fSFrançois Tigeot # define DP_AV_SYNC_CAP (1 << 2) /* DP 1.3 */ 633*a85cb24fSFrançois Tigeot # define DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED (1 << 3) /* DP 1.3 */ 634*a85cb24fSFrançois Tigeot # define DP_VSC_EXT_VESA_SDP_SUPPORTED (1 << 4) /* DP 1.4 */ 635*a85cb24fSFrançois Tigeot # define DP_VSC_EXT_VESA_SDP_CHAINING_SUPPORTED (1 << 5) /* DP 1.4 */ 636*a85cb24fSFrançois Tigeot # define DP_VSC_EXT_CEA_SDP_SUPPORTED (1 << 6) /* DP 1.4 */ 637*a85cb24fSFrançois Tigeot # define DP_VSC_EXT_CEA_SDP_CHAINING_SUPPORTED (1 << 7) /* DP 1.4 */ 638*a85cb24fSFrançois Tigeot 639ba55f2f5SFrançois Tigeot /* DP 1.2 Sideband message defines */ 640ba55f2f5SFrançois Tigeot /* peer device type - DP 1.2a Table 2-92 */ 641ba55f2f5SFrançois Tigeot #define DP_PEER_DEVICE_NONE 0x0 642ba55f2f5SFrançois Tigeot #define DP_PEER_DEVICE_SOURCE_OR_SST 0x1 643ba55f2f5SFrançois Tigeot #define DP_PEER_DEVICE_MST_BRANCHING 0x2 644ba55f2f5SFrançois Tigeot #define DP_PEER_DEVICE_SST_SINK 0x3 645ba55f2f5SFrançois Tigeot #define DP_PEER_DEVICE_DP_LEGACY_CONV 0x4 646ba55f2f5SFrançois Tigeot 647ba55f2f5SFrançois Tigeot /* DP 1.2 MST sideband request names DP 1.2a Table 2-80 */ 648ba55f2f5SFrançois Tigeot #define DP_LINK_ADDRESS 0x01 649ba55f2f5SFrançois Tigeot #define DP_CONNECTION_STATUS_NOTIFY 0x02 650ba55f2f5SFrançois Tigeot #define DP_ENUM_PATH_RESOURCES 0x10 651ba55f2f5SFrançois Tigeot #define DP_ALLOCATE_PAYLOAD 0x11 652ba55f2f5SFrançois Tigeot #define DP_QUERY_PAYLOAD 0x12 653ba55f2f5SFrançois Tigeot #define DP_RESOURCE_STATUS_NOTIFY 0x13 654ba55f2f5SFrançois Tigeot #define DP_CLEAR_PAYLOAD_ID_TABLE 0x14 655ba55f2f5SFrançois Tigeot #define DP_REMOTE_DPCD_READ 0x20 656ba55f2f5SFrançois Tigeot #define DP_REMOTE_DPCD_WRITE 0x21 657ba55f2f5SFrançois Tigeot #define DP_REMOTE_I2C_READ 0x22 658ba55f2f5SFrançois Tigeot #define DP_REMOTE_I2C_WRITE 0x23 659ba55f2f5SFrançois Tigeot #define DP_POWER_UP_PHY 0x24 660ba55f2f5SFrançois Tigeot #define DP_POWER_DOWN_PHY 0x25 661ba55f2f5SFrançois Tigeot #define DP_SINK_EVENT_NOTIFY 0x30 662ba55f2f5SFrançois Tigeot #define DP_QUERY_STREAM_ENC_STATUS 0x38 663ba55f2f5SFrançois Tigeot 664ba55f2f5SFrançois Tigeot /* DP 1.2 MST sideband nak reasons - table 2.84 */ 665ba55f2f5SFrançois Tigeot #define DP_NAK_WRITE_FAILURE 0x01 666ba55f2f5SFrançois Tigeot #define DP_NAK_INVALID_READ 0x02 667ba55f2f5SFrançois Tigeot #define DP_NAK_CRC_FAILURE 0x03 668ba55f2f5SFrançois Tigeot #define DP_NAK_BAD_PARAM 0x04 669ba55f2f5SFrançois Tigeot #define DP_NAK_DEFER 0x05 670ba55f2f5SFrançois Tigeot #define DP_NAK_LINK_FAILURE 0x06 671ba55f2f5SFrançois Tigeot #define DP_NAK_NO_RESOURCES 0x07 672ba55f2f5SFrançois Tigeot #define DP_NAK_DPCD_FAIL 0x08 673ba55f2f5SFrançois Tigeot #define DP_NAK_I2C_NAK 0x09 674ba55f2f5SFrançois Tigeot #define DP_NAK_ALLOCATE_FAIL 0x0a 675ba55f2f5SFrançois Tigeot 67618e26a6dSFrançois Tigeot #define MODE_I2C_START 1 67718e26a6dSFrançois Tigeot #define MODE_I2C_WRITE 2 67818e26a6dSFrançois Tigeot #define MODE_I2C_READ 4 67918e26a6dSFrançois Tigeot #define MODE_I2C_STOP 8 68018e26a6dSFrançois Tigeot 6819f4ca867SFrançois Tigeot /* DP 1.2 MST PORTs - Section 2.5.1 v1.2a spec */ 6829f4ca867SFrançois Tigeot #define DP_MST_PHYSICAL_PORT_0 0 6839f4ca867SFrançois Tigeot #define DP_MST_LOGICAL_PORT_0 8 6849f4ca867SFrançois Tigeot 68518e26a6dSFrançois Tigeot #define DP_LINK_STATUS_SIZE 6 6869edbd4a0SFrançois Tigeot bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], 68718e26a6dSFrançois Tigeot int lane_count); 6889edbd4a0SFrançois Tigeot bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE], 68918e26a6dSFrançois Tigeot int lane_count); 6909edbd4a0SFrançois Tigeot u8 drm_dp_get_adjust_request_voltage(const u8 link_status[DP_LINK_STATUS_SIZE], 69118e26a6dSFrançois Tigeot int lane); 6929edbd4a0SFrançois Tigeot u8 drm_dp_get_adjust_request_pre_emphasis(const u8 link_status[DP_LINK_STATUS_SIZE], 69318e26a6dSFrançois Tigeot int lane); 69418e26a6dSFrançois Tigeot 695352ff8bdSFrançois Tigeot #define DP_BRANCH_OUI_HEADER_SIZE 0xc 69618e26a6dSFrançois Tigeot #define DP_RECEIVER_CAP_SIZE 0xf 6979edbd4a0SFrançois Tigeot #define EDP_PSR_RECEIVER_CAP_SIZE 2 6981dedbd3bSFrançois Tigeot #define EDP_DISPLAY_CTL_CAP_SIZE 3 6999edbd4a0SFrançois Tigeot 7009edbd4a0SFrançois Tigeot void drm_dp_link_train_clock_recovery_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]); 7019edbd4a0SFrançois Tigeot void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]); 70218e26a6dSFrançois Tigeot 70318e26a6dSFrançois Tigeot u8 drm_dp_link_rate_to_bw_code(int link_rate); 70418e26a6dSFrançois Tigeot int drm_dp_bw_code_to_link_rate(u8 link_bw); 70518e26a6dSFrançois Tigeot 7069edbd4a0SFrançois Tigeot struct edp_sdp_header { 7079edbd4a0SFrançois Tigeot u8 HB0; /* Secondary Data Packet ID */ 7089edbd4a0SFrançois Tigeot u8 HB1; /* Secondary Data Packet Type */ 7099edbd4a0SFrançois Tigeot u8 HB2; /* 7:5 reserved, 4:0 revision number */ 7109edbd4a0SFrançois Tigeot u8 HB3; /* 7:5 reserved, 4:0 number of valid data bytes */ 7119edbd4a0SFrançois Tigeot } __packed; 7129edbd4a0SFrançois Tigeot 7139edbd4a0SFrançois Tigeot #define EDP_SDP_HEADER_REVISION_MASK 0x1F 7149edbd4a0SFrançois Tigeot #define EDP_SDP_HEADER_VALID_PAYLOAD_BYTES 0x1F 7159edbd4a0SFrançois Tigeot 7169edbd4a0SFrançois Tigeot struct edp_vsc_psr { 7179edbd4a0SFrançois Tigeot struct edp_sdp_header sdp_header; 7189edbd4a0SFrançois Tigeot u8 DB0; /* Stereo Interface */ 7199edbd4a0SFrançois Tigeot u8 DB1; /* 0 - PSR State; 1 - Update RFB; 2 - CRC Valid */ 7209edbd4a0SFrançois Tigeot u8 DB2; /* CRC value bits 7:0 of the R or Cr component */ 7219edbd4a0SFrançois Tigeot u8 DB3; /* CRC value bits 15:8 of the R or Cr component */ 7229edbd4a0SFrançois Tigeot u8 DB4; /* CRC value bits 7:0 of the G or Y component */ 7239edbd4a0SFrançois Tigeot u8 DB5; /* CRC value bits 15:8 of the G or Y component */ 7249edbd4a0SFrançois Tigeot u8 DB6; /* CRC value bits 7:0 of the B or Cb component */ 7259edbd4a0SFrançois Tigeot u8 DB7; /* CRC value bits 15:8 of the B or Cb component */ 7269edbd4a0SFrançois Tigeot u8 DB8_31[24]; /* Reserved */ 7279edbd4a0SFrançois Tigeot } __packed; 7289edbd4a0SFrançois Tigeot 7299edbd4a0SFrançois Tigeot #define EDP_VSC_PSR_STATE_ACTIVE (1<<0) 7309edbd4a0SFrançois Tigeot #define EDP_VSC_PSR_UPDATE_RFB (1<<1) 7319edbd4a0SFrançois Tigeot #define EDP_VSC_PSR_CRC_VALUES_VALID (1<<2) 7329edbd4a0SFrançois Tigeot 7331dedbd3bSFrançois Tigeot int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE]); 7341dedbd3bSFrançois Tigeot 73518e26a6dSFrançois Tigeot static inline int 7369edbd4a0SFrançois Tigeot drm_dp_max_link_rate(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 73718e26a6dSFrançois Tigeot { 73818e26a6dSFrançois Tigeot return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]); 73918e26a6dSFrançois Tigeot } 74018e26a6dSFrançois Tigeot 74118e26a6dSFrançois Tigeot static inline u8 7429edbd4a0SFrançois Tigeot drm_dp_max_lane_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 74318e26a6dSFrançois Tigeot { 74418e26a6dSFrançois Tigeot return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK; 74518e26a6dSFrançois Tigeot } 74618e26a6dSFrançois Tigeot 7479edbd4a0SFrançois Tigeot static inline bool 7489edbd4a0SFrançois Tigeot drm_dp_enhanced_frame_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 7499edbd4a0SFrançois Tigeot { 7509edbd4a0SFrançois Tigeot return dpcd[DP_DPCD_REV] >= 0x11 && 7519edbd4a0SFrançois Tigeot (dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP); 7529edbd4a0SFrançois Tigeot } 7539edbd4a0SFrançois Tigeot 754352ff8bdSFrançois Tigeot static inline bool 755352ff8bdSFrançois Tigeot drm_dp_tps3_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 756352ff8bdSFrançois Tigeot { 757352ff8bdSFrançois Tigeot return dpcd[DP_DPCD_REV] >= 0x12 && 758352ff8bdSFrançois Tigeot dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED; 759352ff8bdSFrançois Tigeot } 760352ff8bdSFrançois Tigeot 7614be47400SFrançois Tigeot static inline bool 7624be47400SFrançois Tigeot drm_dp_is_branch(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) 7634be47400SFrançois Tigeot { 7644be47400SFrançois Tigeot return dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT; 7654be47400SFrançois Tigeot } 7664be47400SFrançois Tigeot 767ba55f2f5SFrançois Tigeot /* 768ba55f2f5SFrançois Tigeot * DisplayPort AUX channel 769ba55f2f5SFrançois Tigeot */ 770ba55f2f5SFrançois Tigeot 771ba55f2f5SFrançois Tigeot /** 772ba55f2f5SFrançois Tigeot * struct drm_dp_aux_msg - DisplayPort AUX channel transaction 773ba55f2f5SFrançois Tigeot * @address: address of the (first) register to access 774ba55f2f5SFrançois Tigeot * @request: contains the type of transaction (see DP_AUX_* macros) 775ba55f2f5SFrançois Tigeot * @reply: upon completion, contains the reply type of the transaction 776ba55f2f5SFrançois Tigeot * @buffer: pointer to a transmission or reception buffer 777ba55f2f5SFrançois Tigeot * @size: size of @buffer 778ba55f2f5SFrançois Tigeot */ 779ba55f2f5SFrançois Tigeot struct drm_dp_aux_msg { 780ba55f2f5SFrançois Tigeot unsigned int address; 781ba55f2f5SFrançois Tigeot u8 request; 782ba55f2f5SFrançois Tigeot u8 reply; 7834be47400SFrançois Tigeot void *buffer; 784ba55f2f5SFrançois Tigeot size_t size; 785ba55f2f5SFrançois Tigeot }; 786ba55f2f5SFrançois Tigeot 787ba55f2f5SFrançois Tigeot /** 788ba55f2f5SFrançois Tigeot * struct drm_dp_aux - DisplayPort AUX channel 789ba55f2f5SFrançois Tigeot * @name: user-visible name of this AUX channel and the I2C-over-AUX adapter 790ba55f2f5SFrançois Tigeot * @ddc: I2C adapter that can be used for I2C-over-AUX communication 791ba55f2f5SFrançois Tigeot * @dev: pointer to struct device that is the parent for this AUX channel 792*a85cb24fSFrançois Tigeot * @crtc: backpointer to the crtc that is currently using this AUX channel 793ba55f2f5SFrançois Tigeot * @hw_mutex: internal mutex used for locking transfers 794*a85cb24fSFrançois Tigeot * @crc_work: worker that captures CRCs for each frame 795*a85cb24fSFrançois Tigeot * @crc_count: counter of captured frame CRCs 796ba55f2f5SFrançois Tigeot * @transfer: transfers a message representing a single AUX transaction 797ba55f2f5SFrançois Tigeot * 798ba55f2f5SFrançois Tigeot * The .dev field should be set to a pointer to the device that implements 799ba55f2f5SFrançois Tigeot * the AUX channel. 800ba55f2f5SFrançois Tigeot * 801ba55f2f5SFrançois Tigeot * The .name field may be used to specify the name of the I2C adapter. If set to 802ba55f2f5SFrançois Tigeot * NULL, dev_name() of .dev will be used. 803ba55f2f5SFrançois Tigeot * 804ba55f2f5SFrançois Tigeot * Drivers provide a hardware-specific implementation of how transactions 805ba55f2f5SFrançois Tigeot * are executed via the .transfer() function. A pointer to a drm_dp_aux_msg 806ba55f2f5SFrançois Tigeot * structure describing the transaction is passed into this function. Upon 807ba55f2f5SFrançois Tigeot * success, the implementation should return the number of payload bytes 808ba55f2f5SFrançois Tigeot * that were transferred, or a negative error-code on failure. Helpers 809ba55f2f5SFrançois Tigeot * propagate errors from the .transfer() function, with the exception of 810ba55f2f5SFrançois Tigeot * the -EBUSY error, which causes a transaction to be retried. On a short, 811ba55f2f5SFrançois Tigeot * helpers will return -EPROTO to make it simpler to check for failure. 812ba55f2f5SFrançois Tigeot * 813ba55f2f5SFrançois Tigeot * An AUX channel can also be used to transport I2C messages to a sink. A 814ba55f2f5SFrançois Tigeot * typical application of that is to access an EDID that's present in the 815ba55f2f5SFrançois Tigeot * sink device. The .transfer() function can also be used to execute such 816352ff8bdSFrançois Tigeot * transactions. The drm_dp_aux_register() function registers an I2C 817352ff8bdSFrançois Tigeot * adapter that can be passed to drm_probe_ddc(). Upon removal, drivers 818352ff8bdSFrançois Tigeot * should call drm_dp_aux_unregister() to remove the I2C adapter. 819477eb7f9SFrançois Tigeot * The I2C adapter uses long transfers by default; if a partial response is 820477eb7f9SFrançois Tigeot * received, the adapter will drop down to the size given by the partial 821477eb7f9SFrançois Tigeot * response for this transaction only. 822ba55f2f5SFrançois Tigeot * 823ba55f2f5SFrançois Tigeot * Note that the aux helper code assumes that the .transfer() function 824ba55f2f5SFrançois Tigeot * only modifies the reply field of the drm_dp_aux_msg structure. The 825ba55f2f5SFrançois Tigeot * retry logic and i2c helpers assume this is the case. 826ba55f2f5SFrançois Tigeot */ 827ba55f2f5SFrançois Tigeot struct drm_dp_aux { 8284be47400SFrançois Tigeot const char *name; 8299f4ca867SFrançois Tigeot struct i2c_adapter ddc; 830ba55f2f5SFrançois Tigeot struct device *dev; 831*a85cb24fSFrançois Tigeot struct drm_crtc *crtc; 832ba55f2f5SFrançois Tigeot struct lock hw_mutex; 833*a85cb24fSFrançois Tigeot struct work_struct crc_work; 834*a85cb24fSFrançois Tigeot u8 crc_count; 835ba55f2f5SFrançois Tigeot ssize_t (*transfer)(struct drm_dp_aux *aux, 836ba55f2f5SFrançois Tigeot struct drm_dp_aux_msg *msg); 8371dedbd3bSFrançois Tigeot /** 8381dedbd3bSFrançois Tigeot * @i2c_nack_count: Counts I2C NACKs, used for DP validation. 8391dedbd3bSFrançois Tigeot */ 8401dedbd3bSFrançois Tigeot unsigned i2c_nack_count; 8411dedbd3bSFrançois Tigeot /** 8421dedbd3bSFrançois Tigeot * @i2c_defer_count: Counts I2C DEFERs, used for DP validation. 8431dedbd3bSFrançois Tigeot */ 8441dedbd3bSFrançois Tigeot unsigned i2c_defer_count; 845ba55f2f5SFrançois Tigeot }; 846ba55f2f5SFrançois Tigeot 847ba55f2f5SFrançois Tigeot ssize_t drm_dp_dpcd_read(struct drm_dp_aux *aux, unsigned int offset, 848ba55f2f5SFrançois Tigeot void *buffer, size_t size); 849ba55f2f5SFrançois Tigeot ssize_t drm_dp_dpcd_write(struct drm_dp_aux *aux, unsigned int offset, 850ba55f2f5SFrançois Tigeot void *buffer, size_t size); 851ba55f2f5SFrançois Tigeot 852ba55f2f5SFrançois Tigeot /** 853ba55f2f5SFrançois Tigeot * drm_dp_dpcd_readb() - read a single byte from the DPCD 854ba55f2f5SFrançois Tigeot * @aux: DisplayPort AUX channel 855ba55f2f5SFrançois Tigeot * @offset: address of the register to read 856ba55f2f5SFrançois Tigeot * @valuep: location where the value of the register will be stored 857ba55f2f5SFrançois Tigeot * 858ba55f2f5SFrançois Tigeot * Returns the number of bytes transferred (1) on success, or a negative 859ba55f2f5SFrançois Tigeot * error code on failure. 860ba55f2f5SFrançois Tigeot */ 861ba55f2f5SFrançois Tigeot static inline ssize_t drm_dp_dpcd_readb(struct drm_dp_aux *aux, 862ba55f2f5SFrançois Tigeot unsigned int offset, u8 *valuep) 863ba55f2f5SFrançois Tigeot { 864ba55f2f5SFrançois Tigeot return drm_dp_dpcd_read(aux, offset, valuep, 1); 865ba55f2f5SFrançois Tigeot } 866ba55f2f5SFrançois Tigeot 867ba55f2f5SFrançois Tigeot /** 868ba55f2f5SFrançois Tigeot * drm_dp_dpcd_writeb() - write a single byte to the DPCD 869ba55f2f5SFrançois Tigeot * @aux: DisplayPort AUX channel 870ba55f2f5SFrançois Tigeot * @offset: address of the register to write 871ba55f2f5SFrançois Tigeot * @value: value to write to the register 872ba55f2f5SFrançois Tigeot * 873ba55f2f5SFrançois Tigeot * Returns the number of bytes transferred (1) on success, or a negative 874ba55f2f5SFrançois Tigeot * error code on failure. 875ba55f2f5SFrançois Tigeot */ 876ba55f2f5SFrançois Tigeot static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux, 877ba55f2f5SFrançois Tigeot unsigned int offset, u8 value) 878ba55f2f5SFrançois Tigeot { 879ba55f2f5SFrançois Tigeot return drm_dp_dpcd_write(aux, offset, &value, 1); 880ba55f2f5SFrançois Tigeot } 881ba55f2f5SFrançois Tigeot 882ba55f2f5SFrançois Tigeot int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux, 883ba55f2f5SFrançois Tigeot u8 status[DP_LINK_STATUS_SIZE]); 884ba55f2f5SFrançois Tigeot 885ba55f2f5SFrançois Tigeot /* 886ba55f2f5SFrançois Tigeot * DisplayPort link 887ba55f2f5SFrançois Tigeot */ 888ba55f2f5SFrançois Tigeot #define DP_LINK_CAP_ENHANCED_FRAMING (1 << 0) 889ba55f2f5SFrançois Tigeot 890ba55f2f5SFrançois Tigeot struct drm_dp_link { 891ba55f2f5SFrançois Tigeot unsigned char revision; 892ba55f2f5SFrançois Tigeot unsigned int rate; 893ba55f2f5SFrançois Tigeot unsigned int num_lanes; 894ba55f2f5SFrançois Tigeot unsigned long capabilities; 895ba55f2f5SFrançois Tigeot }; 896ba55f2f5SFrançois Tigeot 897ba55f2f5SFrançois Tigeot int drm_dp_link_probe(struct drm_dp_aux *aux, struct drm_dp_link *link); 898ba55f2f5SFrançois Tigeot int drm_dp_link_power_up(struct drm_dp_aux *aux, struct drm_dp_link *link); 8992c9916cdSFrançois Tigeot int drm_dp_link_power_down(struct drm_dp_aux *aux, struct drm_dp_link *link); 900ba55f2f5SFrançois Tigeot int drm_dp_link_configure(struct drm_dp_aux *aux, struct drm_dp_link *link); 9011dedbd3bSFrançois Tigeot int drm_dp_downstream_max_clock(const u8 dpcd[DP_RECEIVER_CAP_SIZE], 9021dedbd3bSFrançois Tigeot const u8 port_cap[4]); 9031dedbd3bSFrançois Tigeot int drm_dp_downstream_max_bpc(const u8 dpcd[DP_RECEIVER_CAP_SIZE], 9041dedbd3bSFrançois Tigeot const u8 port_cap[4]); 9051dedbd3bSFrançois Tigeot int drm_dp_downstream_id(struct drm_dp_aux *aux, char id[6]); 9061dedbd3bSFrançois Tigeot void drm_dp_downstream_debug(struct seq_file *m, const u8 dpcd[DP_RECEIVER_CAP_SIZE], 9071dedbd3bSFrançois Tigeot const u8 port_cap[4], struct drm_dp_aux *aux); 908ba55f2f5SFrançois Tigeot 9091dedbd3bSFrançois Tigeot void drm_dp_aux_init(struct drm_dp_aux *aux); 910ba55f2f5SFrançois Tigeot int drm_dp_aux_register(struct drm_dp_aux *aux); 911ba55f2f5SFrançois Tigeot void drm_dp_aux_unregister(struct drm_dp_aux *aux); 912ba55f2f5SFrançois Tigeot 913*a85cb24fSFrançois Tigeot int drm_dp_start_crc(struct drm_dp_aux *aux, struct drm_crtc *crtc); 914*a85cb24fSFrançois Tigeot int drm_dp_stop_crc(struct drm_dp_aux *aux); 915*a85cb24fSFrançois Tigeot 916*a85cb24fSFrançois Tigeot struct drm_dp_dpcd_ident { 917*a85cb24fSFrançois Tigeot u8 oui[3]; 918*a85cb24fSFrançois Tigeot u8 device_id[6]; 919*a85cb24fSFrançois Tigeot u8 hw_rev; 920*a85cb24fSFrançois Tigeot u8 sw_major_rev; 921*a85cb24fSFrançois Tigeot u8 sw_minor_rev; 922*a85cb24fSFrançois Tigeot } __packed; 923*a85cb24fSFrançois Tigeot 924*a85cb24fSFrançois Tigeot /** 925*a85cb24fSFrançois Tigeot * struct drm_dp_desc - DP branch/sink device descriptor 926*a85cb24fSFrançois Tigeot * @ident: DP device identification from DPCD 0x400 (sink) or 0x500 (branch). 927*a85cb24fSFrançois Tigeot * @quirks: Quirks; use drm_dp_has_quirk() to query for the quirks. 928*a85cb24fSFrançois Tigeot */ 929*a85cb24fSFrançois Tigeot struct drm_dp_desc { 930*a85cb24fSFrançois Tigeot struct drm_dp_dpcd_ident ident; 931*a85cb24fSFrançois Tigeot u32 quirks; 932*a85cb24fSFrançois Tigeot }; 933*a85cb24fSFrançois Tigeot 934*a85cb24fSFrançois Tigeot int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc, 935*a85cb24fSFrançois Tigeot bool is_branch); 936*a85cb24fSFrançois Tigeot 937*a85cb24fSFrançois Tigeot /** 938*a85cb24fSFrançois Tigeot * enum drm_dp_quirk - Display Port sink/branch device specific quirks 939*a85cb24fSFrançois Tigeot * 940*a85cb24fSFrançois Tigeot * Display Port sink and branch devices in the wild have a variety of bugs, try 941*a85cb24fSFrançois Tigeot * to collect them here. The quirks are shared, but it's up to the drivers to 942*a85cb24fSFrançois Tigeot * implement workarounds for them. 943*a85cb24fSFrançois Tigeot */ 944*a85cb24fSFrançois Tigeot enum drm_dp_quirk { 945*a85cb24fSFrançois Tigeot /** 946*a85cb24fSFrançois Tigeot * @DP_DPCD_QUIRK_LIMITED_M_N: 947*a85cb24fSFrançois Tigeot * 948*a85cb24fSFrançois Tigeot * The device requires main link attributes Mvid and Nvid to be limited 949*a85cb24fSFrançois Tigeot * to 16 bits. 950*a85cb24fSFrançois Tigeot */ 951*a85cb24fSFrançois Tigeot DP_DPCD_QUIRK_LIMITED_M_N, 952*a85cb24fSFrançois Tigeot }; 953*a85cb24fSFrançois Tigeot 954*a85cb24fSFrançois Tigeot /** 955*a85cb24fSFrançois Tigeot * drm_dp_has_quirk() - does the DP device have a specific quirk 956*a85cb24fSFrançois Tigeot * @desc: Device decriptor filled by drm_dp_read_desc() 957*a85cb24fSFrançois Tigeot * @quirk: Quirk to query for 958*a85cb24fSFrançois Tigeot * 959*a85cb24fSFrançois Tigeot * Return true if DP device identified by @desc has @quirk. 960*a85cb24fSFrançois Tigeot */ 961*a85cb24fSFrançois Tigeot static inline bool 962*a85cb24fSFrançois Tigeot drm_dp_has_quirk(const struct drm_dp_desc *desc, enum drm_dp_quirk quirk) 963*a85cb24fSFrançois Tigeot { 964*a85cb24fSFrançois Tigeot return desc->quirks & BIT(quirk); 965*a85cb24fSFrançois Tigeot } 966*a85cb24fSFrançois Tigeot 96718e26a6dSFrançois Tigeot #endif /* _DRM_DP_HELPER_H_ */ 968