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linux/include/drm/drm_dp_helper.h
Thierry Reding 9a42c7c647 drm/tegra: Move drm_dp_link helpers to Tegra DRM 
During the discussion of patches that enhance the drm_dp_link helpers it
was concluded that these helpers aren't very useful to begin with. After
all other drivers have been converted not to use these helpers anymore,
move these helpers into the last remaining user: Tegra DRM.

If at some point these helpers are deemed more widely useful, they can
be moved out into the DRM DP helpers again.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-14-thierry.reding@gmail.com
2019-10-23 18:22:10 +02:00

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/*
* Copyright © 2008 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef _DRM_DP_HELPER_H_
#define _DRM_DP_HELPER_H_
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/types.h>
/*
* Unless otherwise noted, all values are from the DP 1.1a spec. Note that
* DP and DPCD versions are independent. Differences from 1.0 are not noted,
* 1.0 devices basically don't exist in the wild.
*
* Abbreviations, in chronological order:
*
* eDP: Embedded DisplayPort version 1
* DPI: DisplayPort Interoperability Guideline v1.1a
* 1.2: DisplayPort 1.2
* MST: Multistream Transport - part of DP 1.2a
*
* 1.2 formally includes both eDP and DPI definitions.
*/
/* MSA (Main Stream Attribute) MISC bits (as MISC1<<8|MISC0) */
#define DP_MSA_MISC_SYNC_CLOCK (1 << 0)
#define DP_MSA_MISC_INTERLACE_VTOTAL_EVEN (1 << 8)
#define DP_MSA_MISC_STEREO_NO_3D (0 << 9)
#define DP_MSA_MISC_STEREO_PROG_RIGHT_EYE (1 << 9)
#define DP_MSA_MISC_STEREO_PROG_LEFT_EYE (3 << 9)
/* bits per component for non-RAW */
#define DP_MSA_MISC_6_BPC (0 << 5)
#define DP_MSA_MISC_8_BPC (1 << 5)
#define DP_MSA_MISC_10_BPC (2 << 5)
#define DP_MSA_MISC_12_BPC (3 << 5)
#define DP_MSA_MISC_16_BPC (4 << 5)
/* bits per component for RAW */
#define DP_MSA_MISC_RAW_6_BPC (1 << 5)
#define DP_MSA_MISC_RAW_7_BPC (2 << 5)
#define DP_MSA_MISC_RAW_8_BPC (3 << 5)
#define DP_MSA_MISC_RAW_10_BPC (4 << 5)
#define DP_MSA_MISC_RAW_12_BPC (5 << 5)
#define DP_MSA_MISC_RAW_14_BPC (6 << 5)
#define DP_MSA_MISC_RAW_16_BPC (7 << 5)
/* pixel encoding/colorimetry format */
#define _DP_MSA_MISC_COLOR(misc1_7, misc0_21, misc0_3, misc0_4) \
((misc1_7) << 15 | (misc0_4) << 4 | (misc0_3) << 3 | ((misc0_21) << 1))
#define DP_MSA_MISC_COLOR_RGB _DP_MSA_MISC_COLOR(0, 0, 0, 0)
#define DP_MSA_MISC_COLOR_CEA_RGB _DP_MSA_MISC_COLOR(0, 0, 1, 0)
#define DP_MSA_MISC_COLOR_RGB_WIDE_FIXED _DP_MSA_MISC_COLOR(0, 3, 0, 0)
#define DP_MSA_MISC_COLOR_RGB_WIDE_FLOAT _DP_MSA_MISC_COLOR(0, 3, 0, 1)
#define DP_MSA_MISC_COLOR_Y_ONLY _DP_MSA_MISC_COLOR(1, 0, 0, 0)
#define DP_MSA_MISC_COLOR_RAW _DP_MSA_MISC_COLOR(1, 1, 0, 0)
#define DP_MSA_MISC_COLOR_YCBCR_422_BT601 _DP_MSA_MISC_COLOR(0, 1, 1, 0)
#define DP_MSA_MISC_COLOR_YCBCR_422_BT709 _DP_MSA_MISC_COLOR(0, 1, 1, 1)
#define DP_MSA_MISC_COLOR_YCBCR_444_BT601 _DP_MSA_MISC_COLOR(0, 2, 1, 0)
#define DP_MSA_MISC_COLOR_YCBCR_444_BT709 _DP_MSA_MISC_COLOR(0, 2, 1, 1)
#define DP_MSA_MISC_COLOR_XVYCC_422_BT601 _DP_MSA_MISC_COLOR(0, 1, 0, 0)
#define DP_MSA_MISC_COLOR_XVYCC_422_BT709 _DP_MSA_MISC_COLOR(0, 1, 0, 1)
#define DP_MSA_MISC_COLOR_XVYCC_444_BT601 _DP_MSA_MISC_COLOR(0, 2, 0, 0)
#define DP_MSA_MISC_COLOR_XVYCC_444_BT709 _DP_MSA_MISC_COLOR(0, 2, 0, 1)
#define DP_MSA_MISC_COLOR_OPRGB _DP_MSA_MISC_COLOR(0, 0, 1, 1)
#define DP_MSA_MISC_COLOR_DCI_P3 _DP_MSA_MISC_COLOR(0, 3, 1, 0)
#define DP_MSA_MISC_COLOR_COLOR_PROFILE _DP_MSA_MISC_COLOR(0, 3, 1, 1)
#define DP_MSA_MISC_COLOR_VSC_SDP (1 << 14)
#define DP_AUX_MAX_PAYLOAD_BYTES 16
#define DP_AUX_I2C_WRITE 0x0
#define DP_AUX_I2C_READ 0x1
#define DP_AUX_I2C_WRITE_STATUS_UPDATE 0x2
#define DP_AUX_I2C_MOT 0x4
#define DP_AUX_NATIVE_WRITE 0x8
#define DP_AUX_NATIVE_READ 0x9
#define DP_AUX_NATIVE_REPLY_ACK (0x0 << 0)
#define DP_AUX_NATIVE_REPLY_NACK (0x1 << 0)
#define DP_AUX_NATIVE_REPLY_DEFER (0x2 << 0)
#define DP_AUX_NATIVE_REPLY_MASK (0x3 << 0)
#define DP_AUX_I2C_REPLY_ACK (0x0 << 2)
#define DP_AUX_I2C_REPLY_NACK (0x1 << 2)
#define DP_AUX_I2C_REPLY_DEFER (0x2 << 2)
#define DP_AUX_I2C_REPLY_MASK (0x3 << 2)
/* AUX CH addresses */
/* DPCD */
#define DP_DPCD_REV 0x000
# define DP_DPCD_REV_10 0x10
# define DP_DPCD_REV_11 0x11
# define DP_DPCD_REV_12 0x12
# define DP_DPCD_REV_13 0x13
# define DP_DPCD_REV_14 0x14
#define DP_MAX_LINK_RATE 0x001
#define DP_MAX_LANE_COUNT 0x002
# define DP_MAX_LANE_COUNT_MASK 0x1f
# define DP_TPS3_SUPPORTED (1 << 6) /* 1.2 */
# define DP_ENHANCED_FRAME_CAP (1 << 7)
#define DP_MAX_DOWNSPREAD 0x003
# define DP_MAX_DOWNSPREAD_0_5 (1 << 0)
# define DP_NO_AUX_HANDSHAKE_LINK_TRAINING (1 << 6)
# define DP_TPS4_SUPPORTED (1 << 7)
#define DP_NORP 0x004
#define DP_DOWNSTREAMPORT_PRESENT 0x005
# define DP_DWN_STRM_PORT_PRESENT (1 << 0)
# define DP_DWN_STRM_PORT_TYPE_MASK 0x06
# define DP_DWN_STRM_PORT_TYPE_DP (0 << 1)
# define DP_DWN_STRM_PORT_TYPE_ANALOG (1 << 1)
# define DP_DWN_STRM_PORT_TYPE_TMDS (2 << 1)
# define DP_DWN_STRM_PORT_TYPE_OTHER (3 << 1)
# define DP_FORMAT_CONVERSION (1 << 3)
# define DP_DETAILED_CAP_INFO_AVAILABLE (1 << 4) /* DPI */
#define DP_MAIN_LINK_CHANNEL_CODING 0x006
# define DP_CAP_ANSI_8B10B (1 << 0)
#define DP_DOWN_STREAM_PORT_COUNT 0x007
# define DP_PORT_COUNT_MASK 0x0f
# define DP_MSA_TIMING_PAR_IGNORED (1 << 6) /* eDP */
# define DP_OUI_SUPPORT (1 << 7)
#define DP_RECEIVE_PORT_0_CAP_0 0x008
# define DP_LOCAL_EDID_PRESENT (1 << 1)
# define DP_ASSOCIATED_TO_PRECEDING_PORT (1 << 2)
#define DP_RECEIVE_PORT_0_BUFFER_SIZE 0x009
#define DP_RECEIVE_PORT_1_CAP_0 0x00a
#define DP_RECEIVE_PORT_1_BUFFER_SIZE 0x00b
#define DP_I2C_SPEED_CAP 0x00c /* DPI */
# define DP_I2C_SPEED_1K 0x01
# define DP_I2C_SPEED_5K 0x02
# define DP_I2C_SPEED_10K 0x04
# define DP_I2C_SPEED_100K 0x08
# define DP_I2C_SPEED_400K 0x10
# define DP_I2C_SPEED_1M 0x20
#define DP_EDP_CONFIGURATION_CAP 0x00d /* XXX 1.2? */
# define DP_ALTERNATE_SCRAMBLER_RESET_CAP (1 << 0)
# define DP_FRAMING_CHANGE_CAP (1 << 1)
# define DP_DPCD_DISPLAY_CONTROL_CAPABLE (1 << 3) /* edp v1.2 or higher */
#define DP_TRAINING_AUX_RD_INTERVAL 0x00e /* XXX 1.2? */
# define DP_TRAINING_AUX_RD_MASK 0x7F /* DP 1.3 */
# define DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT (1 << 7) /* DP 1.3 */
#define DP_ADAPTER_CAP 0x00f /* 1.2 */
# define DP_FORCE_LOAD_SENSE_CAP (1 << 0)
# define DP_ALTERNATE_I2C_PATTERN_CAP (1 << 1)
#define DP_SUPPORTED_LINK_RATES 0x010 /* eDP 1.4 */
# define DP_MAX_SUPPORTED_RATES 8 /* 16-bit little-endian */
/* Multiple stream transport */
#define DP_FAUX_CAP 0x020 /* 1.2 */
# define DP_FAUX_CAP_1 (1 << 0)
#define DP_MSTM_CAP 0x021 /* 1.2 */
# define DP_MST_CAP (1 << 0)
#define DP_NUMBER_OF_AUDIO_ENDPOINTS 0x022 /* 1.2 */
/* AV_SYNC_DATA_BLOCK 1.2 */
#define DP_AV_GRANULARITY 0x023
# define DP_AG_FACTOR_MASK (0xf << 0)
# define DP_AG_FACTOR_3MS (0 << 0)
# define DP_AG_FACTOR_2MS (1 << 0)
# define DP_AG_FACTOR_1MS (2 << 0)
# define DP_AG_FACTOR_500US (3 << 0)
# define DP_AG_FACTOR_200US (4 << 0)
# define DP_AG_FACTOR_100US (5 << 0)
# define DP_AG_FACTOR_10US (6 << 0)
# define DP_AG_FACTOR_1US (7 << 0)
# define DP_VG_FACTOR_MASK (0xf << 4)
# define DP_VG_FACTOR_3MS (0 << 4)
# define DP_VG_FACTOR_2MS (1 << 4)
# define DP_VG_FACTOR_1MS (2 << 4)
# define DP_VG_FACTOR_500US (3 << 4)
# define DP_VG_FACTOR_200US (4 << 4)
# define DP_VG_FACTOR_100US (5 << 4)
#define DP_AUD_DEC_LAT0 0x024
#define DP_AUD_DEC_LAT1 0x025
#define DP_AUD_PP_LAT0 0x026
#define DP_AUD_PP_LAT1 0x027
#define DP_VID_INTER_LAT 0x028
#define DP_VID_PROG_LAT 0x029
#define DP_REP_LAT 0x02a
#define DP_AUD_DEL_INS0 0x02b
#define DP_AUD_DEL_INS1 0x02c
#define DP_AUD_DEL_INS2 0x02d
/* End of AV_SYNC_DATA_BLOCK */
#define DP_RECEIVER_ALPM_CAP 0x02e /* eDP 1.4 */
# define DP_ALPM_CAP (1 << 0)
#define DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP 0x02f /* eDP 1.4 */
# define DP_AUX_FRAME_SYNC_CAP (1 << 0)
#define DP_GUID 0x030 /* 1.2 */
#define DP_DSC_SUPPORT 0x060 /* DP 1.4 */
# define DP_DSC_DECOMPRESSION_IS_SUPPORTED (1 << 0)
#define DP_DSC_REV 0x061
# define DP_DSC_MAJOR_MASK (0xf << 0)
# define DP_DSC_MINOR_MASK (0xf << 4)
# define DP_DSC_MAJOR_SHIFT 0
# define DP_DSC_MINOR_SHIFT 4
#define DP_DSC_RC_BUF_BLK_SIZE 0x062
# define DP_DSC_RC_BUF_BLK_SIZE_1 0x0
# define DP_DSC_RC_BUF_BLK_SIZE_4 0x1
# define DP_DSC_RC_BUF_BLK_SIZE_16 0x2
# define DP_DSC_RC_BUF_BLK_SIZE_64 0x3
#define DP_DSC_RC_BUF_SIZE 0x063
#define DP_DSC_SLICE_CAP_1 0x064
# define DP_DSC_1_PER_DP_DSC_SINK (1 << 0)
# define DP_DSC_2_PER_DP_DSC_SINK (1 << 1)
# define DP_DSC_4_PER_DP_DSC_SINK (1 << 3)
# define DP_DSC_6_PER_DP_DSC_SINK (1 << 4)
# define DP_DSC_8_PER_DP_DSC_SINK (1 << 5)
# define DP_DSC_10_PER_DP_DSC_SINK (1 << 6)
# define DP_DSC_12_PER_DP_DSC_SINK (1 << 7)
#define DP_DSC_LINE_BUF_BIT_DEPTH 0x065
# define DP_DSC_LINE_BUF_BIT_DEPTH_MASK (0xf << 0)
# define DP_DSC_LINE_BUF_BIT_DEPTH_9 0x0
# define DP_DSC_LINE_BUF_BIT_DEPTH_10 0x1
# define DP_DSC_LINE_BUF_BIT_DEPTH_11 0x2
# define DP_DSC_LINE_BUF_BIT_DEPTH_12 0x3
# define DP_DSC_LINE_BUF_BIT_DEPTH_13 0x4
# define DP_DSC_LINE_BUF_BIT_DEPTH_14 0x5
# define DP_DSC_LINE_BUF_BIT_DEPTH_15 0x6
# define DP_DSC_LINE_BUF_BIT_DEPTH_16 0x7
# define DP_DSC_LINE_BUF_BIT_DEPTH_8 0x8
#define DP_DSC_BLK_PREDICTION_SUPPORT 0x066
# define DP_DSC_BLK_PREDICTION_IS_SUPPORTED (1 << 0)
#define DP_DSC_MAX_BITS_PER_PIXEL_LOW 0x067 /* eDP 1.4 */
#define DP_DSC_MAX_BITS_PER_PIXEL_HI 0x068 /* eDP 1.4 */
# define DP_DSC_MAX_BITS_PER_PIXEL_HI_MASK (0x3 << 0)
# define DP_DSC_MAX_BITS_PER_PIXEL_HI_SHIFT 8
#define DP_DSC_DEC_COLOR_FORMAT_CAP 0x069
# define DP_DSC_RGB (1 << 0)
# define DP_DSC_YCbCr444 (1 << 1)
# define DP_DSC_YCbCr422_Simple (1 << 2)
# define DP_DSC_YCbCr422_Native (1 << 3)
# define DP_DSC_YCbCr420_Native (1 << 4)
#define DP_DSC_DEC_COLOR_DEPTH_CAP 0x06A
# define DP_DSC_8_BPC (1 << 1)
# define DP_DSC_10_BPC (1 << 2)
# define DP_DSC_12_BPC (1 << 3)
#define DP_DSC_PEAK_THROUGHPUT 0x06B
# define DP_DSC_THROUGHPUT_MODE_0_MASK (0xf << 0)
# define DP_DSC_THROUGHPUT_MODE_0_SHIFT 0
# define DP_DSC_THROUGHPUT_MODE_0_UPSUPPORTED 0
# define DP_DSC_THROUGHPUT_MODE_0_340 (1 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_400 (2 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_450 (3 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_500 (4 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_550 (5 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_600 (6 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_650 (7 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_700 (8 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_750 (9 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_800 (10 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_850 (11 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_900 (12 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_950 (13 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_1000 (14 << 0)
# define DP_DSC_THROUGHPUT_MODE_0_170 (15 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_MASK (0xf << 4)
# define DP_DSC_THROUGHPUT_MODE_1_SHIFT 4
# define DP_DSC_THROUGHPUT_MODE_1_UPSUPPORTED 0
# define DP_DSC_THROUGHPUT_MODE_1_340 (1 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_400 (2 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_450 (3 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_500 (4 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_550 (5 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_600 (6 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_650 (7 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_700 (8 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_750 (9 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_800 (10 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_850 (11 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_900 (12 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_950 (13 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_1000 (14 << 4)
# define DP_DSC_THROUGHPUT_MODE_1_170 (15 << 4)
#define DP_DSC_MAX_SLICE_WIDTH 0x06C
#define DP_DSC_MIN_SLICE_WIDTH_VALUE 2560
#define DP_DSC_SLICE_WIDTH_MULTIPLIER 320
#define DP_DSC_SLICE_CAP_2 0x06D
# define DP_DSC_16_PER_DP_DSC_SINK (1 << 0)
# define DP_DSC_20_PER_DP_DSC_SINK (1 << 1)
# define DP_DSC_24_PER_DP_DSC_SINK (1 << 2)
#define DP_DSC_BITS_PER_PIXEL_INC 0x06F
# define DP_DSC_BITS_PER_PIXEL_1_16 0x0
# define DP_DSC_BITS_PER_PIXEL_1_8 0x1
# define DP_DSC_BITS_PER_PIXEL_1_4 0x2
# define DP_DSC_BITS_PER_PIXEL_1_2 0x3
# define DP_DSC_BITS_PER_PIXEL_1 0x4
#define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */
# define DP_PSR_IS_SUPPORTED 1
# define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */
# define DP_PSR2_WITH_Y_COORD_IS_SUPPORTED 3 /* eDP 1.4a */
#define DP_PSR_CAPS 0x071 /* XXX 1.2? */
# define DP_PSR_NO_TRAIN_ON_EXIT 1
# define DP_PSR_SETUP_TIME_330 (0 << 1)
# define DP_PSR_SETUP_TIME_275 (1 << 1)
# define DP_PSR_SETUP_TIME_220 (2 << 1)
# define DP_PSR_SETUP_TIME_165 (3 << 1)
# define DP_PSR_SETUP_TIME_110 (4 << 1)
# define DP_PSR_SETUP_TIME_55 (5 << 1)
# define DP_PSR_SETUP_TIME_0 (6 << 1)
# define DP_PSR_SETUP_TIME_MASK (7 << 1)
# define DP_PSR_SETUP_TIME_SHIFT 1
# define DP_PSR2_SU_Y_COORDINATE_REQUIRED (1 << 4) /* eDP 1.4a */
# define DP_PSR2_SU_GRANULARITY_REQUIRED (1 << 5) /* eDP 1.4b */
#define DP_PSR2_SU_X_GRANULARITY 0x072 /* eDP 1.4b */
#define DP_PSR2_SU_Y_GRANULARITY 0x074 /* eDP 1.4b */
/*
* 0x80-0x8f describe downstream port capabilities, but there are two layouts
* based on whether DP_DETAILED_CAP_INFO_AVAILABLE was set. If it was not,
* each port's descriptor is one byte wide. If it was set, each port's is
* four bytes wide, starting with the one byte from the base info. As of
* DP interop v1.1a only VGA defines additional detail.
*/
/* offset 0 */
#define DP_DOWNSTREAM_PORT_0 0x80
# define DP_DS_PORT_TYPE_MASK (7 << 0)
# define DP_DS_PORT_TYPE_DP 0
# define DP_DS_PORT_TYPE_VGA 1
# define DP_DS_PORT_TYPE_DVI 2
# define DP_DS_PORT_TYPE_HDMI 3
# define DP_DS_PORT_TYPE_NON_EDID 4
# define DP_DS_PORT_TYPE_DP_DUALMODE 5
# define DP_DS_PORT_TYPE_WIRELESS 6
# define DP_DS_PORT_HPD (1 << 3)
/* offset 1 for VGA is maximum megapixels per second / 8 */
/* offset 2 */
# define DP_DS_MAX_BPC_MASK (3 << 0)
# define DP_DS_8BPC 0
# define DP_DS_10BPC 1
# define DP_DS_12BPC 2
# define DP_DS_16BPC 3
/* DP Forward error Correction Registers */
#define DP_FEC_CAPABILITY 0x090 /* 1.4 */
# define DP_FEC_CAPABLE (1 << 0)
# define DP_FEC_UNCORR_BLK_ERROR_COUNT_CAP (1 << 1)
# define DP_FEC_CORR_BLK_ERROR_COUNT_CAP (1 << 2)
# define DP_FEC_BIT_ERROR_COUNT_CAP (1 << 3)
/* DP Extended DSC Capabilities */
#define DP_DSC_BRANCH_OVERALL_THROUGHPUT_0 0x0a0 /* DP 1.4a SCR */
#define DP_DSC_BRANCH_OVERALL_THROUGHPUT_1 0x0a1
#define DP_DSC_BRANCH_MAX_LINE_WIDTH 0x0a2
/* link configuration */
#define DP_LINK_BW_SET 0x100
# define DP_LINK_RATE_TABLE 0x00 /* eDP 1.4 */
# define DP_LINK_BW_1_62 0x06
# define DP_LINK_BW_2_7 0x0a
# define DP_LINK_BW_5_4 0x14 /* 1.2 */
# define DP_LINK_BW_8_1 0x1e /* 1.4 */
#define DP_LANE_COUNT_SET 0x101
# define DP_LANE_COUNT_MASK 0x0f
# define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7)
#define DP_TRAINING_PATTERN_SET 0x102
# define DP_TRAINING_PATTERN_DISABLE 0
# define DP_TRAINING_PATTERN_1 1
# define DP_TRAINING_PATTERN_2 2
# define DP_TRAINING_PATTERN_3 3 /* 1.2 */
# define DP_TRAINING_PATTERN_4 7 /* 1.4 */
# define DP_TRAINING_PATTERN_MASK 0x3
# define DP_TRAINING_PATTERN_MASK_1_4 0xf
/* DPCD 1.1 only. For DPCD >= 1.2 see per-lane DP_LINK_QUAL_LANEn_SET */
# define DP_LINK_QUAL_PATTERN_11_DISABLE (0 << 2)
# define DP_LINK_QUAL_PATTERN_11_D10_2 (1 << 2)
# define DP_LINK_QUAL_PATTERN_11_ERROR_RATE (2 << 2)
# define DP_LINK_QUAL_PATTERN_11_PRBS7 (3 << 2)
# define DP_LINK_QUAL_PATTERN_11_MASK (3 << 2)
# define DP_RECOVERED_CLOCK_OUT_EN (1 << 4)
# define DP_LINK_SCRAMBLING_DISABLE (1 << 5)
# define DP_SYMBOL_ERROR_COUNT_BOTH (0 << 6)
# define DP_SYMBOL_ERROR_COUNT_DISPARITY (1 << 6)
# define DP_SYMBOL_ERROR_COUNT_SYMBOL (2 << 6)
# define DP_SYMBOL_ERROR_COUNT_MASK (3 << 6)
#define DP_TRAINING_LANE0_SET 0x103
#define DP_TRAINING_LANE1_SET 0x104
#define DP_TRAINING_LANE2_SET 0x105
#define DP_TRAINING_LANE3_SET 0x106
# define DP_TRAIN_VOLTAGE_SWING_MASK 0x3
# define DP_TRAIN_VOLTAGE_SWING_SHIFT 0
# define DP_TRAIN_MAX_SWING_REACHED (1 << 2)
# define DP_TRAIN_VOLTAGE_SWING_LEVEL_0 (0 << 0)
# define DP_TRAIN_VOLTAGE_SWING_LEVEL_1 (1 << 0)
# define DP_TRAIN_VOLTAGE_SWING_LEVEL_2 (2 << 0)
# define DP_TRAIN_VOLTAGE_SWING_LEVEL_3 (3 << 0)
# define DP_TRAIN_PRE_EMPHASIS_MASK (3 << 3)
# define DP_TRAIN_PRE_EMPH_LEVEL_0 (0 << 3)
# define DP_TRAIN_PRE_EMPH_LEVEL_1 (1 << 3)
# define DP_TRAIN_PRE_EMPH_LEVEL_2 (2 << 3)
# define DP_TRAIN_PRE_EMPH_LEVEL_3 (3 << 3)
# define DP_TRAIN_PRE_EMPHASIS_SHIFT 3
# define DP_TRAIN_MAX_PRE_EMPHASIS_REACHED (1 << 5)
#define DP_DOWNSPREAD_CTRL 0x107
# define DP_SPREAD_AMP_0_5 (1 << 4)
# define DP_MSA_TIMING_PAR_IGNORE_EN (1 << 7) /* eDP */
#define DP_MAIN_LINK_CHANNEL_CODING_SET 0x108
# define DP_SET_ANSI_8B10B (1 << 0)
#define DP_I2C_SPEED_CONTROL_STATUS 0x109 /* DPI */
/* bitmask as for DP_I2C_SPEED_CAP */
#define DP_EDP_CONFIGURATION_SET 0x10a /* XXX 1.2? */
# define DP_ALTERNATE_SCRAMBLER_RESET_ENABLE (1 << 0)
# define DP_FRAMING_CHANGE_ENABLE (1 << 1)
# define DP_PANEL_SELF_TEST_ENABLE (1 << 7)
#define DP_LINK_QUAL_LANE0_SET 0x10b /* DPCD >= 1.2 */
#define DP_LINK_QUAL_LANE1_SET 0x10c
#define DP_LINK_QUAL_LANE2_SET 0x10d
#define DP_LINK_QUAL_LANE3_SET 0x10e
# define DP_LINK_QUAL_PATTERN_DISABLE 0
# define DP_LINK_QUAL_PATTERN_D10_2 1
# define DP_LINK_QUAL_PATTERN_ERROR_RATE 2
# define DP_LINK_QUAL_PATTERN_PRBS7 3
# define DP_LINK_QUAL_PATTERN_80BIT_CUSTOM 4
# define DP_LINK_QUAL_PATTERN_HBR2_EYE 5
# define DP_LINK_QUAL_PATTERN_MASK 7
#define DP_TRAINING_LANE0_1_SET2 0x10f
#define DP_TRAINING_LANE2_3_SET2 0x110
# define DP_LANE02_POST_CURSOR2_SET_MASK (3 << 0)
# define DP_LANE02_MAX_POST_CURSOR2_REACHED (1 << 2)
# define DP_LANE13_POST_CURSOR2_SET_MASK (3 << 4)
# define DP_LANE13_MAX_POST_CURSOR2_REACHED (1 << 6)
#define DP_MSTM_CTRL 0x111 /* 1.2 */
# define DP_MST_EN (1 << 0)
# define DP_UP_REQ_EN (1 << 1)
# define DP_UPSTREAM_IS_SRC (1 << 2)
#define DP_AUDIO_DELAY0 0x112 /* 1.2 */
#define DP_AUDIO_DELAY1 0x113
#define DP_AUDIO_DELAY2 0x114
#define DP_LINK_RATE_SET 0x115 /* eDP 1.4 */
# define DP_LINK_RATE_SET_SHIFT 0
# define DP_LINK_RATE_SET_MASK (7 << 0)
#define DP_RECEIVER_ALPM_CONFIG 0x116 /* eDP 1.4 */
# define DP_ALPM_ENABLE (1 << 0)
# define DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE (1 << 1)
#define DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF 0x117 /* eDP 1.4 */
# define DP_AUX_FRAME_SYNC_ENABLE (1 << 0)
# define DP_IRQ_HPD_ENABLE (1 << 1)
#define DP_UPSTREAM_DEVICE_DP_PWR_NEED 0x118 /* 1.2 */
# define DP_PWR_NOT_NEEDED (1 << 0)
#define DP_FEC_CONFIGURATION 0x120 /* 1.4 */
# define DP_FEC_READY (1 << 0)
# define DP_FEC_ERR_COUNT_SEL_MASK (7 << 1)
# define DP_FEC_ERR_COUNT_DIS (0 << 1)
# define DP_FEC_UNCORR_BLK_ERROR_COUNT (1 << 1)
# define DP_FEC_CORR_BLK_ERROR_COUNT (2 << 1)
# define DP_FEC_BIT_ERROR_COUNT (3 << 1)
# define DP_FEC_LANE_SELECT_MASK (3 << 4)
# define DP_FEC_LANE_0_SELECT (0 << 4)
# define DP_FEC_LANE_1_SELECT (1 << 4)
# define DP_FEC_LANE_2_SELECT (2 << 4)
# define DP_FEC_LANE_3_SELECT (3 << 4)
#define DP_AUX_FRAME_SYNC_VALUE 0x15c /* eDP 1.4 */
# define DP_AUX_FRAME_SYNC_VALID (1 << 0)
#define DP_DSC_ENABLE 0x160 /* DP 1.4 */
# define DP_DECOMPRESSION_EN (1 << 0)
#define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */
# define DP_PSR_ENABLE (1 << 0)
# define DP_PSR_MAIN_LINK_ACTIVE (1 << 1)
# define DP_PSR_CRC_VERIFICATION (1 << 2)
# define DP_PSR_FRAME_CAPTURE (1 << 3)
# define DP_PSR_SELECTIVE_UPDATE (1 << 4)
# define DP_PSR_IRQ_HPD_WITH_CRC_ERRORS (1 << 5)
# define DP_PSR_ENABLE_PSR2 (1 << 6) /* eDP 1.4a */
#define DP_ADAPTER_CTRL 0x1a0
# define DP_ADAPTER_CTRL_FORCE_LOAD_SENSE (1 << 0)
#define DP_BRANCH_DEVICE_CTRL 0x1a1
# define DP_BRANCH_DEVICE_IRQ_HPD (1 << 0)
#define DP_PAYLOAD_ALLOCATE_SET 0x1c0
#define DP_PAYLOAD_ALLOCATE_START_TIME_SLOT 0x1c1
#define DP_PAYLOAD_ALLOCATE_TIME_SLOT_COUNT 0x1c2
#define DP_SINK_COUNT 0x200
/* prior to 1.2 bit 7 was reserved mbz */
# define DP_GET_SINK_COUNT(x) ((((x) & 0x80) >> 1) | ((x) & 0x3f))
# define DP_SINK_CP_READY (1 << 6)
#define DP_DEVICE_SERVICE_IRQ_VECTOR 0x201
# define DP_REMOTE_CONTROL_COMMAND_PENDING (1 << 0)
# define DP_AUTOMATED_TEST_REQUEST (1 << 1)
# define DP_CP_IRQ (1 << 2)
# define DP_MCCS_IRQ (1 << 3)
# define DP_DOWN_REP_MSG_RDY (1 << 4) /* 1.2 MST */
# define DP_UP_REQ_MSG_RDY (1 << 5) /* 1.2 MST */
# define DP_SINK_SPECIFIC_IRQ (1 << 6)
#define DP_LANE0_1_STATUS 0x202
#define DP_LANE2_3_STATUS 0x203
# define DP_LANE_CR_DONE (1 << 0)
# define DP_LANE_CHANNEL_EQ_DONE (1 << 1)
# define DP_LANE_SYMBOL_LOCKED (1 << 2)
#define DP_CHANNEL_EQ_BITS (DP_LANE_CR_DONE | \
DP_LANE_CHANNEL_EQ_DONE | \
DP_LANE_SYMBOL_LOCKED)
#define DP_LANE_ALIGN_STATUS_UPDATED 0x204
#define DP_INTERLANE_ALIGN_DONE (1 << 0)
#define DP_DOWNSTREAM_PORT_STATUS_CHANGED (1 << 6)
#define DP_LINK_STATUS_UPDATED (1 << 7)
#define DP_SINK_STATUS 0x205
#define DP_RECEIVE_PORT_0_STATUS (1 << 0)
#define DP_RECEIVE_PORT_1_STATUS (1 << 1)
#define DP_ADJUST_REQUEST_LANE0_1 0x206
#define DP_ADJUST_REQUEST_LANE2_3 0x207
# define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03
# define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0
# define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c
# define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2
# define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30
# define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4
# define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0
# define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6
#define DP_ADJUST_REQUEST_POST_CURSOR2 0x20c
# define DP_ADJUST_POST_CURSOR2_LANE0_MASK 0x03
# define DP_ADJUST_POST_CURSOR2_LANE0_SHIFT 0
# define DP_ADJUST_POST_CURSOR2_LANE1_MASK 0x0c
# define DP_ADJUST_POST_CURSOR2_LANE1_SHIFT 2
# define DP_ADJUST_POST_CURSOR2_LANE2_MASK 0x30
# define DP_ADJUST_POST_CURSOR2_LANE2_SHIFT 4
# define DP_ADJUST_POST_CURSOR2_LANE3_MASK 0xc0
# define DP_ADJUST_POST_CURSOR2_LANE3_SHIFT 6
#define DP_TEST_REQUEST 0x218
# define DP_TEST_LINK_TRAINING (1 << 0)
# define DP_TEST_LINK_VIDEO_PATTERN (1 << 1)
# define DP_TEST_LINK_EDID_READ (1 << 2)
# define DP_TEST_LINK_PHY_TEST_PATTERN (1 << 3) /* DPCD >= 1.1 */
# define DP_TEST_LINK_FAUX_PATTERN (1 << 4) /* DPCD >= 1.2 */
# define DP_TEST_LINK_AUDIO_PATTERN (1 << 5) /* DPCD >= 1.2 */
# define DP_TEST_LINK_AUDIO_DISABLED_VIDEO (1 << 6) /* DPCD >= 1.2 */
#define DP_TEST_LINK_RATE 0x219
# define DP_LINK_RATE_162 (0x6)
# define DP_LINK_RATE_27 (0xa)
#define DP_TEST_LANE_COUNT 0x220
#define DP_TEST_PATTERN 0x221
# define DP_NO_TEST_PATTERN 0x0
# define DP_COLOR_RAMP 0x1
# define DP_BLACK_AND_WHITE_VERTICAL_LINES 0x2
# define DP_COLOR_SQUARE 0x3
#define DP_TEST_H_TOTAL_HI 0x222
#define DP_TEST_H_TOTAL_LO 0x223
#define DP_TEST_V_TOTAL_HI 0x224
#define DP_TEST_V_TOTAL_LO 0x225
#define DP_TEST_H_START_HI 0x226
#define DP_TEST_H_START_LO 0x227
#define DP_TEST_V_START_HI 0x228
#define DP_TEST_V_START_LO 0x229
#define DP_TEST_HSYNC_HI 0x22A
# define DP_TEST_HSYNC_POLARITY (1 << 7)
# define DP_TEST_HSYNC_WIDTH_HI_MASK (127 << 0)
#define DP_TEST_HSYNC_WIDTH_LO 0x22B
#define DP_TEST_VSYNC_HI 0x22C
# define DP_TEST_VSYNC_POLARITY (1 << 7)
# define DP_TEST_VSYNC_WIDTH_HI_MASK (127 << 0)
#define DP_TEST_VSYNC_WIDTH_LO 0x22D
#define DP_TEST_H_WIDTH_HI 0x22E
#define DP_TEST_H_WIDTH_LO 0x22F
#define DP_TEST_V_HEIGHT_HI 0x230
#define DP_TEST_V_HEIGHT_LO 0x231
#define DP_TEST_MISC0 0x232
# define DP_TEST_SYNC_CLOCK (1 << 0)
# define DP_TEST_COLOR_FORMAT_MASK (3 << 1)
# define DP_TEST_COLOR_FORMAT_SHIFT 1
# define DP_COLOR_FORMAT_RGB (0 << 1)
# define DP_COLOR_FORMAT_YCbCr422 (1 << 1)
# define DP_COLOR_FORMAT_YCbCr444 (2 << 1)
# define DP_TEST_DYNAMIC_RANGE_VESA (0 << 3)
# define DP_TEST_DYNAMIC_RANGE_CEA (1 << 3)
# define DP_TEST_YCBCR_COEFFICIENTS (1 << 4)
# define DP_YCBCR_COEFFICIENTS_ITU601 (0 << 4)
# define DP_YCBCR_COEFFICIENTS_ITU709 (1 << 4)
# define DP_TEST_BIT_DEPTH_MASK (7 << 5)
# define DP_TEST_BIT_DEPTH_SHIFT 5
# define DP_TEST_BIT_DEPTH_6 (0 << 5)
# define DP_TEST_BIT_DEPTH_8 (1 << 5)
# define DP_TEST_BIT_DEPTH_10 (2 << 5)
# define DP_TEST_BIT_DEPTH_12 (3 << 5)
# define DP_TEST_BIT_DEPTH_16 (4 << 5)
#define DP_TEST_MISC1 0x233
# define DP_TEST_REFRESH_DENOMINATOR (1 << 0)
# define DP_TEST_INTERLACED (1 << 1)
#define DP_TEST_REFRESH_RATE_NUMERATOR 0x234
#define DP_TEST_MISC0 0x232
#define DP_TEST_CRC_R_CR 0x240
#define DP_TEST_CRC_G_Y 0x242
#define DP_TEST_CRC_B_CB 0x244
#define DP_TEST_SINK_MISC 0x246
# define DP_TEST_CRC_SUPPORTED (1 << 5)
# define DP_TEST_COUNT_MASK 0xf
#define DP_TEST_PHY_PATTERN 0x248
#define DP_TEST_80BIT_CUSTOM_PATTERN_7_0 0x250
#define DP_TEST_80BIT_CUSTOM_PATTERN_15_8 0x251
#define DP_TEST_80BIT_CUSTOM_PATTERN_23_16 0x252
#define DP_TEST_80BIT_CUSTOM_PATTERN_31_24 0x253
#define DP_TEST_80BIT_CUSTOM_PATTERN_39_32 0x254
#define DP_TEST_80BIT_CUSTOM_PATTERN_47_40 0x255
#define DP_TEST_80BIT_CUSTOM_PATTERN_55_48 0x256
#define DP_TEST_80BIT_CUSTOM_PATTERN_63_56 0x257
#define DP_TEST_80BIT_CUSTOM_PATTERN_71_64 0x258
#define DP_TEST_80BIT_CUSTOM_PATTERN_79_72 0x259
#define DP_TEST_RESPONSE 0x260
# define DP_TEST_ACK (1 << 0)
# define DP_TEST_NAK (1 << 1)
# define DP_TEST_EDID_CHECKSUM_WRITE (1 << 2)
#define DP_TEST_EDID_CHECKSUM 0x261
#define DP_TEST_SINK 0x270
# define DP_TEST_SINK_START (1 << 0)
#define DP_TEST_AUDIO_MODE 0x271
#define DP_TEST_AUDIO_PATTERN_TYPE 0x272
#define DP_TEST_AUDIO_PERIOD_CH1 0x273
#define DP_TEST_AUDIO_PERIOD_CH2 0x274
#define DP_TEST_AUDIO_PERIOD_CH3 0x275
#define DP_TEST_AUDIO_PERIOD_CH4 0x276
#define DP_TEST_AUDIO_PERIOD_CH5 0x277
#define DP_TEST_AUDIO_PERIOD_CH6 0x278
#define DP_TEST_AUDIO_PERIOD_CH7 0x279
#define DP_TEST_AUDIO_PERIOD_CH8 0x27A
#define DP_FEC_STATUS 0x280 /* 1.4 */
# define DP_FEC_DECODE_EN_DETECTED (1 << 0)
# define DP_FEC_DECODE_DIS_DETECTED (1 << 1)
#define DP_FEC_ERROR_COUNT_LSB 0x0281 /* 1.4 */
#define DP_FEC_ERROR_COUNT_MSB 0x0282 /* 1.4 */
# define DP_FEC_ERROR_COUNT_MASK 0x7F
# define DP_FEC_ERR_COUNT_VALID (1 << 7)
#define DP_PAYLOAD_TABLE_UPDATE_STATUS 0x2c0 /* 1.2 MST */
# define DP_PAYLOAD_TABLE_UPDATED (1 << 0)
# define DP_PAYLOAD_ACT_HANDLED (1 << 1)
#define DP_VC_PAYLOAD_ID_SLOT_1 0x2c1 /* 1.2 MST */
/* up to ID_SLOT_63 at 0x2ff */
#define DP_SOURCE_OUI 0x300
#define DP_SINK_OUI 0x400
#define DP_BRANCH_OUI 0x500
#define DP_BRANCH_ID 0x503
#define DP_BRANCH_REVISION_START 0x509
#define DP_BRANCH_HW_REV 0x509
#define DP_BRANCH_SW_REV 0x50A
#define DP_SET_POWER 0x600
# define DP_SET_POWER_D0 0x1
# define DP_SET_POWER_D3 0x2
# define DP_SET_POWER_MASK 0x3
# define DP_SET_POWER_D3_AUX_ON 0x5
#define DP_EDP_DPCD_REV 0x700 /* eDP 1.2 */
# define DP_EDP_11 0x00
# define DP_EDP_12 0x01
# define DP_EDP_13 0x02
# define DP_EDP_14 0x03
# define DP_EDP_14a 0x04 /* eDP 1.4a */
# define DP_EDP_14b 0x05 /* eDP 1.4b */
#define DP_EDP_GENERAL_CAP_1 0x701
# define DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP (1 << 0)
# define DP_EDP_BACKLIGHT_PIN_ENABLE_CAP (1 << 1)
# define DP_EDP_BACKLIGHT_AUX_ENABLE_CAP (1 << 2)
# define DP_EDP_PANEL_SELF_TEST_PIN_ENABLE_CAP (1 << 3)
# define DP_EDP_PANEL_SELF_TEST_AUX_ENABLE_CAP (1 << 4)
# define DP_EDP_FRC_ENABLE_CAP (1 << 5)
# define DP_EDP_COLOR_ENGINE_CAP (1 << 6)
# define DP_EDP_SET_POWER_CAP (1 << 7)
#define DP_EDP_BACKLIGHT_ADJUSTMENT_CAP 0x702
# define DP_EDP_BACKLIGHT_BRIGHTNESS_PWM_PIN_CAP (1 << 0)
# define DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP (1 << 1)
# define DP_EDP_BACKLIGHT_BRIGHTNESS_BYTE_COUNT (1 << 2)
# define DP_EDP_BACKLIGHT_AUX_PWM_PRODUCT_CAP (1 << 3)
# define DP_EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU_CAP (1 << 4)
# define DP_EDP_BACKLIGHT_FREQ_AUX_SET_CAP (1 << 5)
# define DP_EDP_DYNAMIC_BACKLIGHT_CAP (1 << 6)
# define DP_EDP_VBLANK_BACKLIGHT_UPDATE_CAP (1 << 7)
#define DP_EDP_GENERAL_CAP_2 0x703
# define DP_EDP_OVERDRIVE_ENGINE_ENABLED (1 << 0)
#define DP_EDP_GENERAL_CAP_3 0x704 /* eDP 1.4 */
# define DP_EDP_X_REGION_CAP_MASK (0xf << 0)
# define DP_EDP_X_REGION_CAP_SHIFT 0
# define DP_EDP_Y_REGION_CAP_MASK (0xf << 4)
# define DP_EDP_Y_REGION_CAP_SHIFT 4
#define DP_EDP_DISPLAY_CONTROL_REGISTER 0x720
# define DP_EDP_BACKLIGHT_ENABLE (1 << 0)
# define DP_EDP_BLACK_VIDEO_ENABLE (1 << 1)
# define DP_EDP_FRC_ENABLE (1 << 2)
# define DP_EDP_COLOR_ENGINE_ENABLE (1 << 3)
# define DP_EDP_VBLANK_BACKLIGHT_UPDATE_ENABLE (1 << 7)
#define DP_EDP_BACKLIGHT_MODE_SET_REGISTER 0x721
# define DP_EDP_BACKLIGHT_CONTROL_MODE_MASK (3 << 0)
# define DP_EDP_BACKLIGHT_CONTROL_MODE_PWM (0 << 0)
# define DP_EDP_BACKLIGHT_CONTROL_MODE_PRESET (1 << 0)
# define DP_EDP_BACKLIGHT_CONTROL_MODE_DPCD (2 << 0)
# define DP_EDP_BACKLIGHT_CONTROL_MODE_PRODUCT (3 << 0)
# define DP_EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU_ENABLE (1 << 2)
# define DP_EDP_BACKLIGHT_FREQ_AUX_SET_ENABLE (1 << 3)
# define DP_EDP_DYNAMIC_BACKLIGHT_ENABLE (1 << 4)
# define DP_EDP_REGIONAL_BACKLIGHT_ENABLE (1 << 5)
# define DP_EDP_UPDATE_REGION_BRIGHTNESS (1 << 6) /* eDP 1.4 */
#define DP_EDP_BACKLIGHT_BRIGHTNESS_MSB 0x722
#define DP_EDP_BACKLIGHT_BRIGHTNESS_LSB 0x723
#define DP_EDP_PWMGEN_BIT_COUNT 0x724
#define DP_EDP_PWMGEN_BIT_COUNT_CAP_MIN 0x725
#define DP_EDP_PWMGEN_BIT_COUNT_CAP_MAX 0x726
# define DP_EDP_PWMGEN_BIT_COUNT_MASK (0x1f << 0)
#define DP_EDP_BACKLIGHT_CONTROL_STATUS 0x727
#define DP_EDP_BACKLIGHT_FREQ_SET 0x728
# define DP_EDP_BACKLIGHT_FREQ_BASE_KHZ 27000
#define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MSB 0x72a
#define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_MID 0x72b
#define DP_EDP_BACKLIGHT_FREQ_CAP_MIN_LSB 0x72c
#define DP_EDP_BACKLIGHT_FREQ_CAP_MAX_MSB 0x72d
#define DP_EDP_BACKLIGHT_FREQ_CAP_MAX_MID 0x72e
#define DP_EDP_BACKLIGHT_FREQ_CAP_MAX_LSB 0x72f
#define DP_EDP_DBC_MINIMUM_BRIGHTNESS_SET 0x732
#define DP_EDP_DBC_MAXIMUM_BRIGHTNESS_SET 0x733
#define DP_EDP_REGIONAL_BACKLIGHT_BASE 0x740 /* eDP 1.4 */
#define DP_EDP_REGIONAL_BACKLIGHT_0 0x741 /* eDP 1.4 */
#define DP_SIDEBAND_MSG_DOWN_REQ_BASE 0x1000 /* 1.2 MST */
#define DP_SIDEBAND_MSG_UP_REP_BASE 0x1200 /* 1.2 MST */
#define DP_SIDEBAND_MSG_DOWN_REP_BASE 0x1400 /* 1.2 MST */
#define DP_SIDEBAND_MSG_UP_REQ_BASE 0x1600 /* 1.2 MST */
#define DP_SINK_COUNT_ESI 0x2002 /* 1.2 */
/* 0-5 sink count */
# define DP_SINK_COUNT_CP_READY (1 << 6)
#define DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0 0x2003 /* 1.2 */
#define DP_DEVICE_SERVICE_IRQ_VECTOR_ESI1 0x2004 /* 1.2 */
# define DP_RX_GTC_MSTR_REQ_STATUS_CHANGE (1 << 0)
# define DP_LOCK_ACQUISITION_REQUEST (1 << 1)
# define DP_CEC_IRQ (1 << 2)
#define DP_LINK_SERVICE_IRQ_VECTOR_ESI0 0x2005 /* 1.2 */
#define DP_PSR_ERROR_STATUS 0x2006 /* XXX 1.2? */
# define DP_PSR_LINK_CRC_ERROR (1 << 0)
# define DP_PSR_RFB_STORAGE_ERROR (1 << 1)
# define DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR (1 << 2) /* eDP 1.4 */
#define DP_PSR_ESI 0x2007 /* XXX 1.2? */
# define DP_PSR_CAPS_CHANGE (1 << 0)
#define DP_PSR_STATUS 0x2008 /* XXX 1.2? */
# define DP_PSR_SINK_INACTIVE 0
# define DP_PSR_SINK_ACTIVE_SRC_SYNCED 1
# define DP_PSR_SINK_ACTIVE_RFB 2
# define DP_PSR_SINK_ACTIVE_SINK_SYNCED 3
# define DP_PSR_SINK_ACTIVE_RESYNC 4
# define DP_PSR_SINK_INTERNAL_ERROR 7
# define DP_PSR_SINK_STATE_MASK 0x07
#define DP_SYNCHRONIZATION_LATENCY_IN_SINK 0x2009 /* edp 1.4 */
# define DP_MAX_RESYNC_FRAME_COUNT_MASK (0xf << 0)
# define DP_MAX_RESYNC_FRAME_COUNT_SHIFT 0
# define DP_LAST_ACTUAL_SYNCHRONIZATION_LATENCY_MASK (0xf << 4)
# define DP_LAST_ACTUAL_SYNCHRONIZATION_LATENCY_SHIFT 4
#define DP_LAST_RECEIVED_PSR_SDP 0x200a /* eDP 1.2 */
# define DP_PSR_STATE_BIT (1 << 0) /* eDP 1.2 */
# define DP_UPDATE_RFB_BIT (1 << 1) /* eDP 1.2 */
# define DP_CRC_VALID_BIT (1 << 2) /* eDP 1.2 */
# define DP_SU_VALID (1 << 3) /* eDP 1.4 */
# define DP_FIRST_SCAN_LINE_SU_REGION (1 << 4) /* eDP 1.4 */
# define DP_LAST_SCAN_LINE_SU_REGION (1 << 5) /* eDP 1.4 */
# define DP_Y_COORDINATE_VALID (1 << 6) /* eDP 1.4a */
#define DP_RECEIVER_ALPM_STATUS 0x200b /* eDP 1.4 */
# define DP_ALPM_LOCK_TIMEOUT_ERROR (1 << 0)
#define DP_LANE0_1_STATUS_ESI 0x200c /* status same as 0x202 */
#define DP_LANE2_3_STATUS_ESI 0x200d /* status same as 0x203 */
#define DP_LANE_ALIGN_STATUS_UPDATED_ESI 0x200e /* status same as 0x204 */
#define DP_SINK_STATUS_ESI 0x200f /* status same as 0x205 */
#define DP_DP13_DPCD_REV 0x2200
#define DP_DP13_MAX_LINK_RATE 0x2201
#define DP_DPRX_FEATURE_ENUMERATION_LIST 0x2210 /* DP 1.3 */
# define DP_GTC_CAP (1 << 0) /* DP 1.3 */
# define DP_SST_SPLIT_SDP_CAP (1 << 1) /* DP 1.4 */
# define DP_AV_SYNC_CAP (1 << 2) /* DP 1.3 */
# define DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED (1 << 3) /* DP 1.3 */
# define DP_VSC_EXT_VESA_SDP_SUPPORTED (1 << 4) /* DP 1.4 */
# define DP_VSC_EXT_VESA_SDP_CHAINING_SUPPORTED (1 << 5) /* DP 1.4 */
# define DP_VSC_EXT_CEA_SDP_SUPPORTED (1 << 6) /* DP 1.4 */
# define DP_VSC_EXT_CEA_SDP_CHAINING_SUPPORTED (1 << 7) /* DP 1.4 */
/* HDMI CEC tunneling over AUX DP 1.3 section 5.3.3.3.1 DPCD 1.4+ */
#define DP_CEC_TUNNELING_CAPABILITY 0x3000
# define DP_CEC_TUNNELING_CAPABLE (1 << 0)
# define DP_CEC_SNOOPING_CAPABLE (1 << 1)
# define DP_CEC_MULTIPLE_LA_CAPABLE (1 << 2)
#define DP_CEC_TUNNELING_CONTROL 0x3001
# define DP_CEC_TUNNELING_ENABLE (1 << 0)
# define DP_CEC_SNOOPING_ENABLE (1 << 1)
#define DP_CEC_RX_MESSAGE_INFO 0x3002
# define DP_CEC_RX_MESSAGE_LEN_MASK (0xf << 0)
# define DP_CEC_RX_MESSAGE_LEN_SHIFT 0
# define DP_CEC_RX_MESSAGE_HPD_STATE (1 << 4)
# define DP_CEC_RX_MESSAGE_HPD_LOST (1 << 5)
# define DP_CEC_RX_MESSAGE_ACKED (1 << 6)
# define DP_CEC_RX_MESSAGE_ENDED (1 << 7)
#define DP_CEC_TX_MESSAGE_INFO 0x3003
# define DP_CEC_TX_MESSAGE_LEN_MASK (0xf << 0)
# define DP_CEC_TX_MESSAGE_LEN_SHIFT 0
# define DP_CEC_TX_RETRY_COUNT_MASK (0x7 << 4)
# define DP_CEC_TX_RETRY_COUNT_SHIFT 4
# define DP_CEC_TX_MESSAGE_SEND (1 << 7)
#define DP_CEC_TUNNELING_IRQ_FLAGS 0x3004
# define DP_CEC_RX_MESSAGE_INFO_VALID (1 << 0)
# define DP_CEC_RX_MESSAGE_OVERFLOW (1 << 1)
# define DP_CEC_TX_MESSAGE_SENT (1 << 4)
# define DP_CEC_TX_LINE_ERROR (1 << 5)
# define DP_CEC_TX_ADDRESS_NACK_ERROR (1 << 6)
# define DP_CEC_TX_DATA_NACK_ERROR (1 << 7)
#define DP_CEC_LOGICAL_ADDRESS_MASK 0x300E /* 0x300F word */
# define DP_CEC_LOGICAL_ADDRESS_0 (1 << 0)
# define DP_CEC_LOGICAL_ADDRESS_1 (1 << 1)
# define DP_CEC_LOGICAL_ADDRESS_2 (1 << 2)
# define DP_CEC_LOGICAL_ADDRESS_3 (1 << 3)
# define DP_CEC_LOGICAL_ADDRESS_4 (1 << 4)
# define DP_CEC_LOGICAL_ADDRESS_5 (1 << 5)
# define DP_CEC_LOGICAL_ADDRESS_6 (1 << 6)
# define DP_CEC_LOGICAL_ADDRESS_7 (1 << 7)
#define DP_CEC_LOGICAL_ADDRESS_MASK_2 0x300F /* 0x300E word */
# define DP_CEC_LOGICAL_ADDRESS_8 (1 << 0)
# define DP_CEC_LOGICAL_ADDRESS_9 (1 << 1)
# define DP_CEC_LOGICAL_ADDRESS_10 (1 << 2)
# define DP_CEC_LOGICAL_ADDRESS_11 (1 << 3)
# define DP_CEC_LOGICAL_ADDRESS_12 (1 << 4)
# define DP_CEC_LOGICAL_ADDRESS_13 (1 << 5)
# define DP_CEC_LOGICAL_ADDRESS_14 (1 << 6)
# define DP_CEC_LOGICAL_ADDRESS_15 (1 << 7)
#define DP_CEC_RX_MESSAGE_BUFFER 0x3010
#define DP_CEC_TX_MESSAGE_BUFFER 0x3020
#define DP_CEC_MESSAGE_BUFFER_LENGTH 0x10
#define DP_AUX_HDCP_BKSV 0x68000
#define DP_AUX_HDCP_RI_PRIME 0x68005
#define DP_AUX_HDCP_AKSV 0x68007
#define DP_AUX_HDCP_AN 0x6800C
#define DP_AUX_HDCP_V_PRIME(h) (0x68014 + h * 4)
#define DP_AUX_HDCP_BCAPS 0x68028
# define DP_BCAPS_REPEATER_PRESENT BIT(1)
# define DP_BCAPS_HDCP_CAPABLE BIT(0)
#define DP_AUX_HDCP_BSTATUS 0x68029
# define DP_BSTATUS_REAUTH_REQ BIT(3)
# define DP_BSTATUS_LINK_FAILURE BIT(2)
# define DP_BSTATUS_R0_PRIME_READY BIT(1)
# define DP_BSTATUS_READY BIT(0)
#define DP_AUX_HDCP_BINFO 0x6802A
#define DP_AUX_HDCP_KSV_FIFO 0x6802C
#define DP_AUX_HDCP_AINFO 0x6803B
/* DP HDCP2.2 parameter offsets in DPCD address space */
#define DP_HDCP_2_2_REG_RTX_OFFSET 0x69000
#define DP_HDCP_2_2_REG_TXCAPS_OFFSET 0x69008
#define DP_HDCP_2_2_REG_CERT_RX_OFFSET 0x6900B
#define DP_HDCP_2_2_REG_RRX_OFFSET 0x69215
#define DP_HDCP_2_2_REG_RX_CAPS_OFFSET 0x6921D
#define DP_HDCP_2_2_REG_EKPUB_KM_OFFSET 0x69220
#define DP_HDCP_2_2_REG_EKH_KM_WR_OFFSET 0x692A0
#define DP_HDCP_2_2_REG_M_OFFSET 0x692B0
#define DP_HDCP_2_2_REG_HPRIME_OFFSET 0x692C0
#define DP_HDCP_2_2_REG_EKH_KM_RD_OFFSET 0x692E0
#define DP_HDCP_2_2_REG_RN_OFFSET 0x692F0
#define DP_HDCP_2_2_REG_LPRIME_OFFSET 0x692F8
#define DP_HDCP_2_2_REG_EDKEY_KS_OFFSET 0x69318
#define DP_HDCP_2_2_REG_RIV_OFFSET 0x69328
#define DP_HDCP_2_2_REG_RXINFO_OFFSET 0x69330
#define DP_HDCP_2_2_REG_SEQ_NUM_V_OFFSET 0x69332
#define DP_HDCP_2_2_REG_VPRIME_OFFSET 0x69335
#define DP_HDCP_2_2_REG_RECV_ID_LIST_OFFSET 0x69345
#define DP_HDCP_2_2_REG_V_OFFSET 0x693E0
#define DP_HDCP_2_2_REG_SEQ_NUM_M_OFFSET 0x693F0
#define DP_HDCP_2_2_REG_K_OFFSET 0x693F3
#define DP_HDCP_2_2_REG_STREAM_ID_TYPE_OFFSET 0x693F5
#define DP_HDCP_2_2_REG_MPRIME_OFFSET 0x69473
#define DP_HDCP_2_2_REG_RXSTATUS_OFFSET 0x69493
#define DP_HDCP_2_2_REG_STREAM_TYPE_OFFSET 0x69494
#define DP_HDCP_2_2_REG_DBG_OFFSET 0x69518
/* Link Training (LT)-tunable PHY Repeaters */
#define DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV 0xf0000 /* 1.3 */
#define DP_MAX_LINK_RATE_PHY_REPEATER 0xf0001 /* 1.4a */
#define DP_PHY_REPEATER_CNT 0xf0002 /* 1.3 */
#define DP_PHY_REPEATER_MODE 0xf0003 /* 1.3 */
#define DP_MAX_LANE_COUNT_PHY_REPEATER 0xf0004 /* 1.4a */
#define DP_Repeater_FEC_CAPABILITY 0xf0004 /* 1.4 */
#define DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT 0xf0005 /* 1.4a */
#define DP_TRAINING_PATTERN_SET_PHY_REPEATER1 0xf0010 /* 1.3 */
#define DP_TRAINING_LANE0_SET_PHY_REPEATER1 0xf0011 /* 1.3 */
#define DP_TRAINING_LANE1_SET_PHY_REPEATER1 0xf0012 /* 1.3 */
#define DP_TRAINING_LANE2_SET_PHY_REPEATER1 0xf0013 /* 1.3 */
#define DP_TRAINING_LANE3_SET_PHY_REPEATER1 0xf0014 /* 1.3 */
#define DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 0xf0020 /* 1.4a */
#define DP_TRANSMITTER_CAPABILITY_PHY_REPEATER1 0xf0021 /* 1.4a */
#define DP_LANE0_1_STATUS_PHY_REPEATER1 0xf0030 /* 1.3 */
#define DP_LANE2_3_STATUS_PHY_REPEATER1 0xf0031 /* 1.3 */
#define DP_LANE_ALIGN_STATUS_UPDATED_PHY_REPEATER1 0xf0032 /* 1.3 */
#define DP_ADJUST_REQUEST_LANE0_1_PHY_REPEATER1 0xf0033 /* 1.3 */
#define DP_ADJUST_REQUEST_LANE2_3_PHY_REPEATER1 0xf0034 /* 1.3 */
#define DP_SYMBOL_ERROR_COUNT_LANE0_PHY_REPEATER1 0xf0035 /* 1.3 */
#define DP_SYMBOL_ERROR_COUNT_LANE1_PHY_REPEATER1 0xf0037 /* 1.3 */
#define DP_SYMBOL_ERROR_COUNT_LANE2_PHY_REPEATER1 0xf0039 /* 1.3 */
#define DP_SYMBOL_ERROR_COUNT_LANE3_PHY_REPEATER1 0xf003b /* 1.3 */
#define DP_FEC_STATUS_PHY_REPEATER1 0xf0290 /* 1.4 */
/* Repeater modes */
#define DP_PHY_REPEATER_MODE_TRANSPARENT 0x55 /* 1.3 */
#define DP_PHY_REPEATER_MODE_NON_TRANSPARENT 0xaa /* 1.3 */
/* DP HDCP message start offsets in DPCD address space */
#define DP_HDCP_2_2_AKE_INIT_OFFSET DP_HDCP_2_2_REG_RTX_OFFSET
#define DP_HDCP_2_2_AKE_SEND_CERT_OFFSET DP_HDCP_2_2_REG_CERT_RX_OFFSET
#define DP_HDCP_2_2_AKE_NO_STORED_KM_OFFSET DP_HDCP_2_2_REG_EKPUB_KM_OFFSET
#define DP_HDCP_2_2_AKE_STORED_KM_OFFSET DP_HDCP_2_2_REG_EKH_KM_WR_OFFSET
#define DP_HDCP_2_2_AKE_SEND_HPRIME_OFFSET DP_HDCP_2_2_REG_HPRIME_OFFSET
#define DP_HDCP_2_2_AKE_SEND_PAIRING_INFO_OFFSET \
DP_HDCP_2_2_REG_EKH_KM_RD_OFFSET
#define DP_HDCP_2_2_LC_INIT_OFFSET DP_HDCP_2_2_REG_RN_OFFSET
#define DP_HDCP_2_2_LC_SEND_LPRIME_OFFSET DP_HDCP_2_2_REG_LPRIME_OFFSET
#define DP_HDCP_2_2_SKE_SEND_EKS_OFFSET DP_HDCP_2_2_REG_EDKEY_KS_OFFSET
#define DP_HDCP_2_2_REP_SEND_RECVID_LIST_OFFSET DP_HDCP_2_2_REG_RXINFO_OFFSET
#define DP_HDCP_2_2_REP_SEND_ACK_OFFSET DP_HDCP_2_2_REG_V_OFFSET
#define DP_HDCP_2_2_REP_STREAM_MANAGE_OFFSET DP_HDCP_2_2_REG_SEQ_NUM_M_OFFSET
#define DP_HDCP_2_2_REP_STREAM_READY_OFFSET DP_HDCP_2_2_REG_MPRIME_OFFSET
#define HDCP_2_2_DP_RXSTATUS_LEN 1
#define HDCP_2_2_DP_RXSTATUS_READY(x) ((x) & BIT(0))
#define HDCP_2_2_DP_RXSTATUS_H_PRIME(x) ((x) & BIT(1))
#define HDCP_2_2_DP_RXSTATUS_PAIRING(x) ((x) & BIT(2))
#define HDCP_2_2_DP_RXSTATUS_REAUTH_REQ(x) ((x) & BIT(3))
#define HDCP_2_2_DP_RXSTATUS_LINK_FAILED(x) ((x) & BIT(4))
/* DP 1.2 Sideband message defines */
/* peer device type - DP 1.2a Table 2-92 */
#define DP_PEER_DEVICE_NONE 0x0
#define DP_PEER_DEVICE_SOURCE_OR_SST 0x1
#define DP_PEER_DEVICE_MST_BRANCHING 0x2
#define DP_PEER_DEVICE_SST_SINK 0x3
#define DP_PEER_DEVICE_DP_LEGACY_CONV 0x4
/* DP 1.2 MST sideband request names DP 1.2a Table 2-80 */
#define DP_GET_MSG_TRANSACTION_VERSION 0x00 /* DP 1.3 */
#define DP_LINK_ADDRESS 0x01
#define DP_CONNECTION_STATUS_NOTIFY 0x02
#define DP_ENUM_PATH_RESOURCES 0x10
#define DP_ALLOCATE_PAYLOAD 0x11
#define DP_QUERY_PAYLOAD 0x12
#define DP_RESOURCE_STATUS_NOTIFY 0x13
#define DP_CLEAR_PAYLOAD_ID_TABLE 0x14
#define DP_REMOTE_DPCD_READ 0x20
#define DP_REMOTE_DPCD_WRITE 0x21
#define DP_REMOTE_I2C_READ 0x22
#define DP_REMOTE_I2C_WRITE 0x23
#define DP_POWER_UP_PHY 0x24
#define DP_POWER_DOWN_PHY 0x25
#define DP_SINK_EVENT_NOTIFY 0x30
#define DP_QUERY_STREAM_ENC_STATUS 0x38
/* DP 1.2 MST sideband reply types */
#define DP_SIDEBAND_REPLY_ACK 0x00
#define DP_SIDEBAND_REPLY_NAK 0x01
/* DP 1.2 MST sideband nak reasons - table 2.84 */
#define DP_NAK_WRITE_FAILURE 0x01
#define DP_NAK_INVALID_READ 0x02
#define DP_NAK_CRC_FAILURE 0x03
#define DP_NAK_BAD_PARAM 0x04
#define DP_NAK_DEFER 0x05
#define DP_NAK_LINK_FAILURE 0x06
#define DP_NAK_NO_RESOURCES 0x07
#define DP_NAK_DPCD_FAIL 0x08
#define DP_NAK_I2C_NAK 0x09
#define DP_NAK_ALLOCATE_FAIL 0x0a
#define MODE_I2C_START 1
#define MODE_I2C_WRITE 2
#define MODE_I2C_READ 4
#define MODE_I2C_STOP 8
/* DP 1.2 MST PORTs - Section 2.5.1 v1.2a spec */
#define DP_MST_PHYSICAL_PORT_0 0
#define DP_MST_LOGICAL_PORT_0 8
#define DP_LINK_STATUS_SIZE 6
bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count);
bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count);
u8 drm_dp_get_adjust_request_voltage(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane);
u8 drm_dp_get_adjust_request_pre_emphasis(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane);
u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE],
unsigned int lane);
#define DP_BRANCH_OUI_HEADER_SIZE 0xc
#define DP_RECEIVER_CAP_SIZE 0xf
#define DP_DSC_RECEIVER_CAP_SIZE 0xf
#define EDP_PSR_RECEIVER_CAP_SIZE 2
#define EDP_DISPLAY_CTL_CAP_SIZE 3
void drm_dp_link_train_clock_recovery_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]);
void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]);
u8 drm_dp_link_rate_to_bw_code(int link_rate);
int drm_dp_bw_code_to_link_rate(u8 link_bw);
#define DP_SDP_AUDIO_TIMESTAMP 0x01
#define DP_SDP_AUDIO_STREAM 0x02
#define DP_SDP_EXTENSION 0x04 /* DP 1.1 */
#define DP_SDP_AUDIO_COPYMANAGEMENT 0x05 /* DP 1.2 */
#define DP_SDP_ISRC 0x06 /* DP 1.2 */
#define DP_SDP_VSC 0x07 /* DP 1.2 */
#define DP_SDP_CAMERA_GENERIC(i) (0x08 + (i)) /* 0-7, DP 1.3 */
#define DP_SDP_PPS 0x10 /* DP 1.4 */
#define DP_SDP_VSC_EXT_VESA 0x20 /* DP 1.4 */
#define DP_SDP_VSC_EXT_CEA 0x21 /* DP 1.4 */
/* 0x80+ CEA-861 infoframe types */
/**
* struct dp_sdp_header - DP secondary data packet header
* @HB0: Secondary Data Packet ID
* @HB1: Secondary Data Packet Type
* @HB2: Secondary Data Packet Specific header, Byte 0
* @HB3: Secondary Data packet Specific header, Byte 1
*/
struct dp_sdp_header {
u8 HB0;
u8 HB1;
u8 HB2;
u8 HB3;
} __packed;
#define EDP_SDP_HEADER_REVISION_MASK 0x1F
#define EDP_SDP_HEADER_VALID_PAYLOAD_BYTES 0x1F
#define DP_SDP_PPS_HEADER_PAYLOAD_BYTES_MINUS_1 0x7F
/**
* struct dp_sdp - DP secondary data packet
* @sdp_header: DP secondary data packet header
* @db: DP secondaray data packet data blocks
* VSC SDP Payload for PSR
* db[0]: Stereo Interface
* db[1]: 0 - PSR State; 1 - Update RFB; 2 - CRC Valid
* db[2]: CRC value bits 7:0 of the R or Cr component
* db[3]: CRC value bits 15:8 of the R or Cr component
* db[4]: CRC value bits 7:0 of the G or Y component
* db[5]: CRC value bits 15:8 of the G or Y component
* db[6]: CRC value bits 7:0 of the B or Cb component
* db[7]: CRC value bits 15:8 of the B or Cb component
* db[8] - db[31]: Reserved
* VSC SDP Payload for Pixel Encoding/Colorimetry Format
* db[0] - db[15]: Reserved
* db[16]: Pixel Encoding and Colorimetry Formats
* db[17]: Dynamic Range and Component Bit Depth
* db[18]: Content Type
* db[19] - db[31]: Reserved
*/
struct dp_sdp {
struct dp_sdp_header sdp_header;
u8 db[32];
} __packed;
#define EDP_VSC_PSR_STATE_ACTIVE (1<<0)
#define EDP_VSC_PSR_UPDATE_RFB (1<<1)
#define EDP_VSC_PSR_CRC_VALUES_VALID (1<<2)
int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE]);
static inline int
drm_dp_max_link_rate(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]);
}
static inline u8
drm_dp_max_lane_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
}
static inline bool
drm_dp_enhanced_frame_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_DPCD_REV] >= 0x11 &&
(dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP);
}
static inline bool
drm_dp_fast_training_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_DPCD_REV] >= 0x11 &&
(dpcd[DP_MAX_DOWNSPREAD] & DP_NO_AUX_HANDSHAKE_LINK_TRAINING);
}
static inline bool
drm_dp_tps3_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_DPCD_REV] >= 0x12 &&
dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED;
}
static inline bool
drm_dp_tps4_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_DPCD_REV] >= 0x14 &&
dpcd[DP_MAX_DOWNSPREAD] & DP_TPS4_SUPPORTED;
}
static inline u8
drm_dp_training_pattern_mask(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return (dpcd[DP_DPCD_REV] >= 0x14) ? DP_TRAINING_PATTERN_MASK_1_4 :
DP_TRAINING_PATTERN_MASK;
}
static inline bool
drm_dp_is_branch(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT;
}
/* DP/eDP DSC support */
u8 drm_dp_dsc_sink_max_slice_count(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE],
bool is_edp);
u8 drm_dp_dsc_sink_line_buf_depth(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE]);
int drm_dp_dsc_sink_supported_input_bpcs(const u8 dsc_dpc[DP_DSC_RECEIVER_CAP_SIZE],
u8 dsc_bpc[3]);
static inline bool
drm_dp_sink_supports_dsc(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
{
return dsc_dpcd[DP_DSC_SUPPORT - DP_DSC_SUPPORT] &
DP_DSC_DECOMPRESSION_IS_SUPPORTED;
}
static inline u16
drm_edp_dsc_sink_output_bpp(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
{
return dsc_dpcd[DP_DSC_MAX_BITS_PER_PIXEL_LOW - DP_DSC_SUPPORT] |
(dsc_dpcd[DP_DSC_MAX_BITS_PER_PIXEL_HI - DP_DSC_SUPPORT] &
DP_DSC_MAX_BITS_PER_PIXEL_HI_MASK <<
DP_DSC_MAX_BITS_PER_PIXEL_HI_SHIFT);
}
static inline u32
drm_dp_dsc_sink_max_slice_width(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
{
/* Max Slicewidth = Number of Pixels * 320 */
return dsc_dpcd[DP_DSC_MAX_SLICE_WIDTH - DP_DSC_SUPPORT] *
DP_DSC_SLICE_WIDTH_MULTIPLIER;
}
/* Forward Error Correction Support on DP 1.4 */
static inline bool
drm_dp_sink_supports_fec(const u8 fec_capable)
{
return fec_capable & DP_FEC_CAPABLE;
}
static inline bool
drm_dp_channel_coding_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_MAIN_LINK_CHANNEL_CODING] & DP_CAP_ANSI_8B10B;
}
static inline bool
drm_dp_alternate_scrambler_reset_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_EDP_CONFIGURATION_CAP] &
DP_ALTERNATE_SCRAMBLER_RESET_CAP;
}
/*
* DisplayPort AUX channel
*/
/**
* struct drm_dp_aux_msg - DisplayPort AUX channel transaction
* @address: address of the (first) register to access
* @request: contains the type of transaction (see DP_AUX_* macros)
* @reply: upon completion, contains the reply type of the transaction
* @buffer: pointer to a transmission or reception buffer
* @size: size of @buffer
*/
struct drm_dp_aux_msg {
unsigned int address;
u8 request;
u8 reply;
void *buffer;
size_t size;
};
struct cec_adapter;
struct edid;
struct drm_connector;
/**
* struct drm_dp_aux_cec - DisplayPort CEC-Tunneling-over-AUX
* @lock: mutex protecting this struct
* @adap: the CEC adapter for CEC-Tunneling-over-AUX support.
* @connector: the connector this CEC adapter is associated with
* @unregister_work: unregister the CEC adapter
*/
struct drm_dp_aux_cec {
struct mutex lock;
struct cec_adapter *adap;
struct drm_connector *connector;
struct delayed_work unregister_work;
};
/**
* struct drm_dp_aux - DisplayPort AUX channel
* @name: user-visible name of this AUX channel and the I2C-over-AUX adapter
* @ddc: I2C adapter that can be used for I2C-over-AUX communication
* @dev: pointer to struct device that is the parent for this AUX channel
* @crtc: backpointer to the crtc that is currently using this AUX channel
* @hw_mutex: internal mutex used for locking transfers
* @crc_work: worker that captures CRCs for each frame
* @crc_count: counter of captured frame CRCs
* @transfer: transfers a message representing a single AUX transaction
*
* The .dev field should be set to a pointer to the device that implements
* the AUX channel.
*
* The .name field may be used to specify the name of the I2C adapter. If set to
* NULL, dev_name() of .dev will be used.
*
* Drivers provide a hardware-specific implementation of how transactions
* are executed via the .transfer() function. A pointer to a drm_dp_aux_msg
* structure describing the transaction is passed into this function. Upon
* success, the implementation should return the number of payload bytes
* that were transferred, or a negative error-code on failure. Helpers
* propagate errors from the .transfer() function, with the exception of
* the -EBUSY error, which causes a transaction to be retried. On a short,
* helpers will return -EPROTO to make it simpler to check for failure.
*
* An AUX channel can also be used to transport I2C messages to a sink. A
* typical application of that is to access an EDID that's present in the
* sink device. The .transfer() function can also be used to execute such
* transactions. The drm_dp_aux_register() function registers an I2C
* adapter that can be passed to drm_probe_ddc(). Upon removal, drivers
* should call drm_dp_aux_unregister() to remove the I2C adapter.
* The I2C adapter uses long transfers by default; if a partial response is
* received, the adapter will drop down to the size given by the partial
* response for this transaction only.
*
* Note that the aux helper code assumes that the .transfer() function
* only modifies the reply field of the drm_dp_aux_msg structure. The
* retry logic and i2c helpers assume this is the case.
*/
struct drm_dp_aux {
const char *name;
struct i2c_adapter ddc;
struct device *dev;
struct drm_crtc *crtc;
struct mutex hw_mutex;
struct work_struct crc_work;
u8 crc_count;
ssize_t (*transfer)(struct drm_dp_aux *aux,
struct drm_dp_aux_msg *msg);
/**
* @i2c_nack_count: Counts I2C NACKs, used for DP validation.
*/
unsigned i2c_nack_count;
/**
* @i2c_defer_count: Counts I2C DEFERs, used for DP validation.
*/
unsigned i2c_defer_count;
/**
* @cec: struct containing fields used for CEC-Tunneling-over-AUX.
*/
struct drm_dp_aux_cec cec;
/**
* @is_remote: Is this AUX CH actually using sideband messaging.
*/
bool is_remote;
};
ssize_t drm_dp_dpcd_read(struct drm_dp_aux *aux, unsigned int offset,
void *buffer, size_t size);
ssize_t drm_dp_dpcd_write(struct drm_dp_aux *aux, unsigned int offset,
void *buffer, size_t size);
/**
* drm_dp_dpcd_readb() - read a single byte from the DPCD
* @aux: DisplayPort AUX channel
* @offset: address of the register to read
* @valuep: location where the value of the register will be stored
*
* Returns the number of bytes transferred (1) on success, or a negative
* error code on failure.
*/
static inline ssize_t drm_dp_dpcd_readb(struct drm_dp_aux *aux,
unsigned int offset, u8 *valuep)
{
return drm_dp_dpcd_read(aux, offset, valuep, 1);
}
/**
* drm_dp_dpcd_writeb() - write a single byte to the DPCD
* @aux: DisplayPort AUX channel
* @offset: address of the register to write
* @value: value to write to the register
*
* Returns the number of bytes transferred (1) on success, or a negative
* error code on failure.
*/
static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux,
unsigned int offset, u8 value)
{
return drm_dp_dpcd_write(aux, offset, &value, 1);
}
int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux,
u8 status[DP_LINK_STATUS_SIZE]);
int drm_dp_downstream_max_clock(const u8 dpcd[DP_RECEIVER_CAP_SIZE],
const u8 port_cap[4]);
int drm_dp_downstream_max_bpc(const u8 dpcd[DP_RECEIVER_CAP_SIZE],
const u8 port_cap[4]);
int drm_dp_downstream_id(struct drm_dp_aux *aux, char id[6]);
void drm_dp_downstream_debug(struct seq_file *m, const u8 dpcd[DP_RECEIVER_CAP_SIZE],
const u8 port_cap[4], struct drm_dp_aux *aux);
void drm_dp_aux_init(struct drm_dp_aux *aux);
int drm_dp_aux_register(struct drm_dp_aux *aux);
void drm_dp_aux_unregister(struct drm_dp_aux *aux);
int drm_dp_start_crc(struct drm_dp_aux *aux, struct drm_crtc *crtc);
int drm_dp_stop_crc(struct drm_dp_aux *aux);
struct drm_dp_dpcd_ident {
u8 oui[3];
u8 device_id[6];
u8 hw_rev;
u8 sw_major_rev;
u8 sw_minor_rev;
} __packed;
/**
* struct drm_dp_desc - DP branch/sink device descriptor
* @ident: DP device identification from DPCD 0x400 (sink) or 0x500 (branch).
* @quirks: Quirks; use drm_dp_has_quirk() to query for the quirks.
*/
struct drm_dp_desc {
struct drm_dp_dpcd_ident ident;
u32 quirks;
};
int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc,
bool is_branch);
/**
* enum drm_dp_quirk - Display Port sink/branch device specific quirks
*
* Display Port sink and branch devices in the wild have a variety of bugs, try
* to collect them here. The quirks are shared, but it's up to the drivers to
* implement workarounds for them.
*/
enum drm_dp_quirk {
/**
* @DP_DPCD_QUIRK_CONSTANT_N:
*
* The device requires main link attributes Mvid and Nvid to be limited
* to 16 bits. So will give a constant value (0x8000) for compatability.
*/
DP_DPCD_QUIRK_CONSTANT_N,
/**
* @DP_DPCD_QUIRK_NO_PSR:
*
* The device does not support PSR even if reports that it supports or
* driver still need to implement proper handling for such device.
*/
DP_DPCD_QUIRK_NO_PSR,
/**
* @DP_DPCD_QUIRK_NO_SINK_COUNT:
*
* The device does not set SINK_COUNT to a non-zero value.
* The driver should ignore SINK_COUNT during detection.
*/
DP_DPCD_QUIRK_NO_SINK_COUNT,
};
/**
* drm_dp_has_quirk() - does the DP device have a specific quirk
* @desc: Device decriptor filled by drm_dp_read_desc()
* @quirk: Quirk to query for
*
* Return true if DP device identified by @desc has @quirk.
*/
static inline bool
drm_dp_has_quirk(const struct drm_dp_desc *desc, enum drm_dp_quirk quirk)
{
return desc->quirks & BIT(quirk);
}
#ifdef CONFIG_DRM_DP_CEC
void drm_dp_cec_irq(struct drm_dp_aux *aux);
void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
struct drm_connector *connector);
void drm_dp_cec_unregister_connector(struct drm_dp_aux *aux);
void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid);
void drm_dp_cec_unset_edid(struct drm_dp_aux *aux);
#else
static inline void drm_dp_cec_irq(struct drm_dp_aux *aux)
{
}
static inline void
drm_dp_cec_register_connector(struct drm_dp_aux *aux,
struct drm_connector *connector)
{
}
static inline void drm_dp_cec_unregister_connector(struct drm_dp_aux *aux)
{
}
static inline void drm_dp_cec_set_edid(struct drm_dp_aux *aux,
const struct edid *edid)
{
}
static inline void drm_dp_cec_unset_edid(struct drm_dp_aux *aux)
{
}
#endif
#endif /* _DRM_DP_HELPER_H_ */
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