From c5b1fb658e875527ff697577093ef07f23309ec9 Mon Sep 17 00:00:00 2001 From: Wyon Bi Date: Thu, 10 Dec 2020 06:18:20 +0000 Subject: [PATCH] video/drm: Add dp helper Signed-off-by: Wyon Bi Change-Id: I559f7288038c9b1128f64e56ea7f156a1f643f33 --- drivers/video/drm/Kconfig | 5 + drivers/video/drm/Makefile | 1 + drivers/video/drm/analogix_dp.h | 536 +-------------- drivers/video/drm/drm_dp_helper.c | 168 +++++ include/drm/drm_dp_helper.h | 1064 +++++++++++++++++++++++++++++ 5 files changed, 1239 insertions(+), 535 deletions(-) create mode 100644 drivers/video/drm/drm_dp_helper.c create mode 100644 include/drm/drm_dp_helper.h diff --git a/drivers/video/drm/Kconfig b/drivers/video/drm/Kconfig index 015d0ba0fe..71db4179dc 100644 --- a/drivers/video/drm/Kconfig +++ b/drivers/video/drm/Kconfig @@ -11,6 +11,10 @@ menuconfig DRM_ROCKCHIP This driver supports the on-chip video output device, and targets the Rockchip RK3288 and RK3399. +config DRM_DP_HELPER + bool + depends on DRM_ROCKCHIP + config DRM_ROCKCHIP_PANEL bool "Rockchip Panel Support" depends on DRM_ROCKCHIP @@ -80,6 +84,7 @@ config DRM_ROCKCHIP_ANALOGIX_DP bool "Rockchip specific extensions for Analogix DP driver" depends on DRM_ROCKCHIP select DRM_ROCKCHIP_PANEL + select DRM_DP_HELPER help This selects support for Rockchip SoC specific extensions for the Analogix Core DP driver. If you want to enable DP diff --git a/drivers/video/drm/Makefile b/drivers/video/drm/Makefile index 65835255f5..a1af938ee4 100644 --- a/drivers/video/drm/Makefile +++ b/drivers/video/drm/Makefile @@ -8,6 +8,7 @@ obj-y += rockchip_display.o rockchip_crtc.o rockchip_phy.o rockchip_bridge.o \ rockchip_vop.o rockchip_vop_reg.o rockchip_vop2.o bmp_helper.o obj-$(CONFIG_DRM_MIPI_DSI) += drm_mipi_dsi.o +obj-$(CONFIG_DRM_DP_HELPER) += drm_dp_helper.o obj-$(CONFIG_DRM_ROCKCHIP_DW_MIPI_DSI) += dw_mipi_dsi.o obj-$(CONFIG_DRM_ROCKCHIP_DW_HDMI) += rockchip_dw_hdmi.o dw_hdmi.o obj-$(CONFIG_ROCKCHIP_INNO_HDMI_PHY) += rockchip-inno-hdmi-phy.o diff --git a/drivers/video/drm/analogix_dp.h b/drivers/video/drm/analogix_dp.h index dddabe2efd..8245b1ed9d 100644 --- a/drivers/video/drm/analogix_dp.h +++ b/drivers/video/drm/analogix_dp.h @@ -9,541 +9,7 @@ #include -/* - * 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. - */ - -#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_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_NO_AUX_HANDSHAKE_LINK_TRAINING (1 << 6) - -#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_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_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_PSR_SUPPORT 0x070 /* XXX 1.2? */ -# define DP_PSR_IS_SUPPORTED 1 -# define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */ - -#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 - -/* - * 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_HPD (1 << 3) -/* offset 1 for VGA is maximum megapixels per second / 8 */ -/* offset 2 */ -# define DP_DS_VGA_MAX_BPC_MASK (3 << 0) -# define DP_DS_VGA_8BPC 0 -# define DP_DS_VGA_10BPC 1 -# define DP_DS_VGA_12BPC 2 -# define DP_DS_VGA_16BPC 3 - -/* 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_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_MASK 0x3 - -/* 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_AUX_FRAME_SYNC_VALUE 0x15c /* eDP 1.4 */ -# define DP_AUX_FRAME_SYNC_VALID (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_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_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_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_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_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_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_SET_POWER 0x600 -# define DP_SET_POWER_D0 0x1 -# define DP_SET_POWER_D3 0x2 -# define DP_SET_POWER_MASK 0x3 - -#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_GENERAL_CAP_1 0x701 - -#define DP_EDP_BACKLIGHT_ADJUSTMENT_CAP 0x702 - -#define DP_EDP_GENERAL_CAP_2 0x703 - -#define DP_EDP_GENERAL_CAP_3 0x704 /* eDP 1.4 */ - -#define DP_EDP_DISPLAY_CONTROL_REGISTER 0x720 - -#define DP_EDP_BACKLIGHT_MODE_SET_REGISTER 0x721 - -#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_BACKLIGHT_CONTROL_STATUS 0x727 - -#define DP_EDP_BACKLIGHT_FREQ_SET 0x728 - -#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_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_RECEIVER_ALPM_STATUS 0x200b /* eDP 1.4 */ -# define DP_ALPM_LOCK_TIMEOUT_ERROR (1 << 0) - -/* 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_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 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 +#include #define ANALOGIX_DP_TX_SW_RESET 0x14 #define ANALOGIX_DP_FUNC_EN_1 0x18 diff --git a/drivers/video/drm/drm_dp_helper.c b/drivers/video/drm/drm_dp_helper.c new file mode 100644 index 0000000000..00a58d6a61 --- /dev/null +++ b/drivers/video/drm/drm_dp_helper.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright © 2009 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. + */ + +#include +#include + +/** + * DOC: dp helpers + * + * These functions contain some common logic and helpers at various abstraction + * levels to deal with Display Port sink devices and related things like DP aux + * channel transfers, EDID reading over DP aux channels, decoding certain DPCD + * blocks, ... + */ + +/* Helpers for DP link training */ +static u8 dp_link_status(const u8 link_status[DP_LINK_STATUS_SIZE], int r) +{ + return link_status[r - DP_LANE0_1_STATUS]; +} + +static u8 dp_get_lane_status(const u8 link_status[DP_LINK_STATUS_SIZE], + int lane) +{ + int i = DP_LANE0_1_STATUS + (lane >> 1); + int s = (lane & 1) * 4; + u8 l = dp_link_status(link_status, i); + + return (l >> s) & 0xf; +} + +bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], + int lane_count) +{ + u8 lane_align; + u8 lane_status; + int lane; + + lane_align = dp_link_status(link_status, + DP_LANE_ALIGN_STATUS_UPDATED); + if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) + return false; + for (lane = 0; lane < lane_count; lane++) { + lane_status = dp_get_lane_status(link_status, lane); + if ((lane_status & DP_CHANNEL_EQ_BITS) != DP_CHANNEL_EQ_BITS) + return false; + } + return true; +} + +bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE], + int lane_count) +{ + int lane; + u8 lane_status; + + for (lane = 0; lane < lane_count; lane++) { + lane_status = dp_get_lane_status(link_status, lane); + if ((lane_status & DP_LANE_CR_DONE) == 0) + return false; + } + return true; +} + +u8 drm_dp_get_adjust_request_voltage(const u8 link_status[DP_LINK_STATUS_SIZE], + int lane) +{ + int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); + int s = ((lane & 1) ? + DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : + DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT); + u8 l = dp_link_status(link_status, i); + + return ((l >> s) & 0x3) << DP_TRAIN_VOLTAGE_SWING_SHIFT; +} + +u8 drm_dp_get_adjust_request_pre_emphasis(const u8 link_status[DP_LINK_STATUS_SIZE], + int lane) +{ + int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); + int s = ((lane & 1) ? + DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT : + DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT); + u8 l = dp_link_status(link_status, i); + + return ((l >> s) & 0x3) << DP_TRAIN_PRE_EMPHASIS_SHIFT; +} + +void drm_dp_link_train_clock_recovery_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + int rd_interval = dpcd[DP_TRAINING_AUX_RD_INTERVAL] & + DP_TRAINING_AUX_RD_MASK; + + if (rd_interval > 4) + printf("AUX interval %d, out of range (max 4)\n", rd_interval); + + if (rd_interval == 0 || dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14) + udelay(100); + else + mdelay(rd_interval * 4); +} + +void drm_dp_link_train_channel_eq_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + int rd_interval = dpcd[DP_TRAINING_AUX_RD_INTERVAL] & + DP_TRAINING_AUX_RD_MASK; + + if (rd_interval > 4) + printf("AUX interval %d, out of range (max 4)\n", rd_interval); + + if (rd_interval == 0) + udelay(400); + else + mdelay(rd_interval * 4); +} + +u8 drm_dp_link_rate_to_bw_code(int link_rate) +{ + switch (link_rate) { + default: + WARN(1, "unknown DP link rate %d, using %x\n", link_rate, + DP_LINK_BW_1_62); + case 162000: + return DP_LINK_BW_1_62; + case 270000: + return DP_LINK_BW_2_7; + case 540000: + return DP_LINK_BW_5_4; + case 810000: + return DP_LINK_BW_8_1; + } +} + +int drm_dp_bw_code_to_link_rate(u8 link_bw) +{ + switch (link_bw) { + default: + WARN(1, "unknown DP link BW code %x, using 162000\n", link_bw); + case DP_LINK_BW_1_62: + return 162000; + case DP_LINK_BW_2_7: + return 270000; + case DP_LINK_BW_5_4: + return 540000; + case DP_LINK_BW_8_1: + return 810000; + } +} diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h new file mode 100644 index 0000000000..b629a25185 --- /dev/null +++ b/include/drm/drm_dp_helper.h @@ -0,0 +1,1064 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * 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_ + +/* + * 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. + */ + +#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_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 /* XXX 1.2? */ + +#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_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_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_1_MASK (0xf << 4) +# define DP_DSC_THROUGHPUT_MODE_1_SHIFT 4 +# 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_MAX_SLICE_WIDTH 0x06C + +#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 */ +/* + * 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) + +/* 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_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_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_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_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_PHY_PATTERN_NONE 0x0 +# define DP_TEST_PHY_PATTERN_D10_2_NO_SCRAMBLING 0x1 +# define DP_TEST_PHY_PATTERN_SYMBOL_ERR_MEASUREMENT_CNT 0x2 +# define DP_TEST_PHY_PATTERN_PRBS7 0x3 +# define DP_TEST_PHY_PATTERN_80_BIT_CUSTOM_PATTERN 0x4 +# define DP_TEST_PHY_PATTERN_CP2520_PATTERN_1 0x5 +# define DP_TEST_PHY_PATTERN_CP2520_PATTERN_2 0x6 +# define DP_TEST_PHY_PATTERN_CP2520_PATTERN_3 0x7 +#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_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_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 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_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 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); + +#define DP_BRANCH_OUI_HEADER_SIZE 0xc +#define DP_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 { + u8 HB0; /* Secondary Data Packet ID */ + u8 HB1; /* Secondary Data Packet Type */ + u8 HB2; /* Secondary Data Packet Specific header, Byte 0 */ + u8 HB3; /* Secondary Data packet Specific header, Byte 1 */ +} __packed; + +#define EDP_SDP_HEADER_REVISION_MASK 0x1F +#define EDP_SDP_HEADER_VALID_PAYLOAD_BYTES 0x1F + +struct edp_vsc_psr { + struct dp_sdp_header sdp_header; + u8 DB0; /* Stereo Interface */ + u8 DB1; /* 0 - PSR State; 1 - Update RFB; 2 - CRC Valid */ + u8 DB2; /* CRC value bits 7:0 of the R or Cr component */ + u8 DB3; /* CRC value bits 15:8 of the R or Cr component */ + u8 DB4; /* CRC value bits 7:0 of the G or Y component */ + u8 DB5; /* CRC value bits 15:8 of the G or Y component */ + u8 DB6; /* CRC value bits 7:0 of the B or Cb component */ + u8 DB7; /* CRC value bits 15:8 of the B or Cb component */ + u8 DB8_31[24]; /* Reserved */ +} __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) + +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_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; +} + +#endif /* _DRM_DP_HELPER_H_ */