/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2014, NVIDIA Corporation. */ #ifndef _TEGRA_DISPLAYPORT_H #define _TEGRA_DISPLAYPORT_H #include <linux/drm_dp_helper.h> struct dpaux_ctlr { u32 reserved0; u32 intr_en_aux; u32 reserved2_4; u32 intr_aux; }; #define DPAUX_INTR_EN_AUX 0x1 #define DPAUX_INTR_AUX 0x5 #define DPAUX_DP_AUXDATA_WRITE_W(i) (0x9 + 4 * (i)) #define DPAUX_DP_AUXDATA_READ_W(i) (0x19 + 4 * (i)) #define DPAUX_DP_AUXADDR 0x29 #define DPAUX_DP_AUXCTL 0x2d #define DPAUX_DP_AUXCTL_CMDLEN_SHIFT 0 #define DPAUX_DP_AUXCTL_CMDLEN_FIELD 0xff #define DPAUX_DP_AUXCTL_CMD_SHIFT 12 #define DPAUX_DP_AUXCTL_CMD_MASK (0xf << 12) #define DPAUX_DP_AUXCTL_CMD_I2CWR (0 << 12) #define DPAUX_DP_AUXCTL_CMD_I2CRD (1 << 12) #define DPAUX_DP_AUXCTL_CMD_I2CREQWSTAT (2 << 12) #define DPAUX_DP_AUXCTL_CMD_MOTWR (4 << 12) #define DPAUX_DP_AUXCTL_CMD_MOTRD (5 << 12) #define DPAUX_DP_AUXCTL_CMD_MOTREQWSTAT (6 << 12) #define DPAUX_DP_AUXCTL_CMD_AUXWR (8 << 12) #define DPAUX_DP_AUXCTL_CMD_AUXRD (9 << 12) #define DPAUX_DP_AUXCTL_TRANSACTREQ_SHIFT 16 #define DPAUX_DP_AUXCTL_TRANSACTREQ_MASK (0x1 << 16) #define DPAUX_DP_AUXCTL_TRANSACTREQ_DONE (0 << 16) #define DPAUX_DP_AUXCTL_TRANSACTREQ_PENDING (1 << 16) #define DPAUX_DP_AUXCTL_RST_SHIFT 31 #define DPAUX_DP_AUXCTL_RST_DEASSERT (0 << 31) #define DPAUX_DP_AUXCTL_RST_ASSERT (1 << 31) #define DPAUX_DP_AUXSTAT 0x31 #define DPAUX_DP_AUXSTAT_HPD_STATUS_SHIFT 28 #define DPAUX_DP_AUXSTAT_HPD_STATUS_UNPLUG (0 << 28) #define DPAUX_DP_AUXSTAT_HPD_STATUS_PLUGGED (1 << 28) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_SHIFT 20 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_MASK (0xf << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_IDLE (0 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_SYNC (1 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_START1 (2 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_COMMAND (3 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_ADDRESS (4 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_LENGTH (5 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_WRITE1 (6 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_READ1 (7 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_GET_M (8 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_STOP1 (9 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_STOP2 (10 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_REPLY (11 << 20) #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_CLEANUP (12 << 20) #define DPAUX_DP_AUXSTAT_REPLYTYPE_SHIFT 16 #define DPAUX_DP_AUXSTAT_REPLYTYPE_MASK (0xf << 16) #define DPAUX_DP_AUXSTAT_REPLYTYPE_ACK (0 << 16) #define DPAUX_DP_AUXSTAT_REPLYTYPE_NACK (1 << 16) #define DPAUX_DP_AUXSTAT_REPLYTYPE_DEFER (2 << 16) #define DPAUX_DP_AUXSTAT_REPLYTYPE_I2CNACK (4 << 16) #define DPAUX_DP_AUXSTAT_REPLYTYPE_I2CDEFER (8 << 16) #define DPAUX_DP_AUXSTAT_NO_STOP_ERROR_SHIFT 11 #define DPAUX_DP_AUXSTAT_NO_STOP_ERROR_NOT_PENDING (0 << 11) #define DPAUX_DP_AUXSTAT_NO_STOP_ERROR_PENDING (1 << 11) #define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_SHIFT 10 #define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_NOT_PENDING (0 << 10) #define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_PENDING (1 << 10) #define DPAUX_DP_AUXSTAT_RX_ERROR_SHIFT 9 #define DPAUX_DP_AUXSTAT_RX_ERROR_NOT_PENDING (0 << 9) #define DPAUX_DP_AUXSTAT_RX_ERROR_PENDING (1 << 9) #define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_SHIFT 8 #define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_NOT_PENDING (0 << 8) #define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_PENDING (1 << 8) #define DPAUX_DP_AUXSTAT_REPLY_M_SHIFT 0 #define DPAUX_DP_AUXSTAT_REPLY_M_MASK (0xff << 0) #define DPAUX_HPD_CONFIG (0x3d) #define DPAUX_HPD_IRQ_CONFIG 0x41 #define DPAUX_DP_AUX_CONFIG 0x45 #define DPAUX_HYBRID_PADCTL 0x49 #define DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV_SHIFT 15 #define DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV_DISABLE (0 << 15) #define DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV_ENABLE (1 << 15) #define DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV_SHIFT 14 #define DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV_DISABLE (0 << 14) #define DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV_ENABLE (1 << 14) #define DPAUX_HYBRID_PADCTL_AUX_CMH_SHIFT 12 #define DPAUX_HYBRID_PADCTL_AUX_CMH_DEFAULT_MASK (0x3 << 12) #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_60 (0 << 12) #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_64 (1 << 12) #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_70 (2 << 12) #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_56 (3 << 12) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_SHIFT 8 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_DEFAULT_MASK (0x7 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_78 (0 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_60 (1 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_54 (2 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_45 (3 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_50 (4 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_42 (5 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_39 (6 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_34 (7 << 8) #define DPAUX_HYBRID_PADCTL_AUX_DRVI_SHIFT 2 #define DPAUX_HYBRID_PADCTL_AUX_DRVI_DEFAULT_MASK (0x3f << 2) #define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV_SHIFT 1 #define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV_DISABLE (0 << 1) #define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV_ENABLE (1 << 1) #define DPAUX_HYBRID_PADCTL_MODE_SHIFT 0 #define DPAUX_HYBRID_PADCTL_MODE_AUX 0 #define DPAUX_HYBRID_PADCTL_MODE_I2C 1 #define DPAUX_HYBRID_SPARE 0x4d #define DPAUX_HYBRID_SPARE_PAD_PWR_POWERUP 0 #define DPAUX_HYBRID_SPARE_PAD_PWR_POWERDOWN 1 #define DP_AUX_DEFER_MAX_TRIES 7 #define DP_AUX_TIMEOUT_MAX_TRIES 2 #define DP_POWER_ON_MAX_TRIES 3 #define DP_AUX_MAX_BYTES 16 #define DP_AUX_TIMEOUT_MS 40 #define DP_DPCP_RETRY_SLEEP_NS 400 static const u32 tegra_dp_vs_regs[][4][4] = { /* postcursor2 L0 */ { /* pre-emphasis: L0, L1, L2, L3 */ {0x13, 0x19, 0x1e, 0x28}, /* voltage swing: L0 */ {0x1e, 0x25, 0x2d}, /* L1 */ {0x28, 0x32}, /* L2 */ {0x3c}, /* L3 */ }, /* postcursor2 L1 */ { {0x12, 0x17, 0x1b, 0x25}, {0x1c, 0x23, 0x2a}, {0x25, 0x2f}, {0x39}, }, /* postcursor2 L2 */ { {0x12, 0x16, 0x1a, 0x22}, {0x1b, 0x20, 0x27}, {0x24, 0x2d}, {0x36}, }, /* postcursor2 L3 */ { {0x11, 0x14, 0x17, 0x1f}, {0x19, 0x1e, 0x24}, {0x22, 0x2a}, {0x32}, }, }; static const u32 tegra_dp_pe_regs[][4][4] = { /* postcursor2 L0 */ { /* pre-emphasis: L0, L1, L2, L3 */ {0x00, 0x09, 0x13, 0x25}, /* voltage swing: L0 */ {0x00, 0x0f, 0x1e}, /* L1 */ {0x00, 0x14}, /* L2 */ {0x00}, /* L3 */ }, /* postcursor2 L1 */ { {0x00, 0x0a, 0x14, 0x28}, {0x00, 0x0f, 0x1e}, {0x00, 0x14}, {0x00}, }, /* postcursor2 L2 */ { {0x00, 0x0a, 0x14, 0x28}, {0x00, 0x0f, 0x1e}, {0x00, 0x14}, {0x00}, }, /* postcursor2 L3 */ { {0x00, 0x0a, 0x14, 0x28}, {0x00, 0x0f, 0x1e}, {0x00, 0x14}, {0x00}, }, }; static const u32 tegra_dp_pc_regs[][4][4] = { /* postcursor2 L0 */ { /* pre-emphasis: L0, L1, L2, L3 */ {0x00, 0x00, 0x00, 0x00}, /* voltage swing: L0 */ {0x00, 0x00, 0x00}, /* L1 */ {0x00, 0x00}, /* L2 */ {0x00}, /* L3 */ }, /* postcursor2 L1 */ { {0x02, 0x02, 0x04, 0x05}, {0x02, 0x04, 0x05}, {0x04, 0x05}, {0x05}, }, /* postcursor2 L2 */ { {0x04, 0x05, 0x08, 0x0b}, {0x05, 0x09, 0x0b}, {0x08, 0x0a}, {0x0b}, }, /* postcursor2 L3 */ { {0x05, 0x09, 0x0b, 0x12}, {0x09, 0x0d, 0x12}, {0x0b, 0x0f}, {0x12}, }, }; static const u32 tegra_dp_tx_pu[][4][4] = { /* postcursor2 L0 */ { /* pre-emphasis: L0, L1, L2, L3 */ {0x20, 0x30, 0x40, 0x60}, /* voltage swing: L0 */ {0x30, 0x40, 0x60}, /* L1 */ {0x40, 0x60}, /* L2 */ {0x60}, /* L3 */ }, /* postcursor2 L1 */ { {0x20, 0x20, 0x30, 0x50}, {0x30, 0x40, 0x50}, {0x40, 0x50}, {0x60}, }, /* postcursor2 L2 */ { {0x20, 0x20, 0x30, 0x40}, {0x30, 0x30, 0x40}, {0x40, 0x50}, {0x60}, }, /* postcursor2 L3 */ { {0x20, 0x20, 0x20, 0x40}, {0x30, 0x30, 0x40}, {0x40, 0x40}, {0x60}, }, }; enum { DRIVECURRENT_LEVEL0 = 0, DRIVECURRENT_LEVEL1 = 1, DRIVECURRENT_LEVEL2 = 2, DRIVECURRENT_LEVEL3 = 3, }; enum { PREEMPHASIS_DISABLED = 0, PREEMPHASIS_LEVEL1 = 1, PREEMPHASIS_LEVEL2 = 2, PREEMPHASIS_LEVEL3 = 3, }; enum { POSTCURSOR2_LEVEL0 = 0, POSTCURSOR2_LEVEL1 = 1, POSTCURSOR2_LEVEL2 = 2, POSTCURSOR2_LEVEL3 = 3, POSTCURSOR2_SUPPORTED }; static inline int tegra_dp_is_max_vs(u32 pe, u32 vs) { return (vs < (DRIVECURRENT_LEVEL3 - pe)) ? 0 : 1; } static inline int tegra_dp_is_max_pe(u32 pe, u32 vs) { return (pe < (PREEMPHASIS_LEVEL3 - vs)) ? 0 : 1; } static inline int tegra_dp_is_max_pc(u32 pc) { return (pc < POSTCURSOR2_LEVEL3) ? 0 : 1; } /* DPCD definitions which are not defined in drm_dp_helper.h */ #define DP_DPCD_REV_MAJOR_SHIFT 4 #define DP_DPCD_REV_MAJOR_MASK (0xf << 4) #define DP_DPCD_REV_MINOR_SHIFT 0 #define DP_DPCD_REV_MINOR_MASK 0xf #define DP_MAX_LINK_RATE_VAL_1_62_GPBS 0x6 #define DP_MAX_LINK_RATE_VAL_2_70_GPBS 0xa #define DP_MAX_LINK_RATE_VAL_5_40_GPBS 0x4 #define DP_MAX_LANE_COUNT_LANE_1 0x1 #define DP_MAX_LANE_COUNT_LANE_2 0x2 #define DP_MAX_LANE_COUNT_LANE_4 0x4 #define DP_MAX_LANE_COUNT_TPS3_SUPPORTED_YES (1 << 6) #define DP_MAX_LANE_COUNT_ENHANCED_FRAMING_YES (1 << 7) #define NV_DPCD_TRAINING_LANEX_SET_DC_SHIFT 0 #define NV_DPCD_TRAINING_LANEX_SET_DC_MAX_REACHED_T (0x00000001 << 2) #define NV_DPCD_TRAINING_LANEX_SET_DC_MAX_REACHED_F (0x00000000 << 2) #define NV_DPCD_TRAINING_LANEX_SET_PE_SHIFT 3 #define NV_DPCD_TRAINING_LANEX_SET_PE_MAX_REACHED_T (0x00000001 << 5) #define NV_DPCD_TRAINING_LANEX_SET_PE_MAX_REACHED_F (0x00000000 << 5) #define DP_MAX_DOWNSPREAD_VAL_NONE 0 #define DP_MAX_DOWNSPREAD_VAL_0_5_PCT 1 #define DP_MAX_DOWNSPREAD_NO_AUX_HANDSHAKE_LT_T (1 << 6) #define DP_EDP_CONFIGURATION_CAP_ASC_RESET_YES 1 #define DP_EDP_CONFIGURATION_CAP_FRAMING_CHANGE_YES (1 << 1) #define DP_LANE_COUNT_SET_ENHANCEDFRAMING_T (1 << 7) #define DP_TRAINING_PATTERN_SET_SC_DISABLED_T (1 << 5) #define NV_DPCD_TRAINING_PATTERN_SET_SC_DISABLED_F (0x00000000 << 5) #define NV_DPCD_TRAINING_PATTERN_SET_SC_DISABLED_T (0x00000001 << 5) #define DP_MAIN_LINK_CHANNEL_CODING_SET_ASC_RESET_DISABLE 0 #define DP_MAIN_LINK_CHANNEL_CODING_SET_ASC_RESET_ENABLE 1 #define NV_DPCD_TRAINING_LANE0_1_SET2 0x10f #define NV_DPCD_TRAINING_LANE2_3_SET2 0x110 #define NV_DPCD_LANEX_SET2_PC2_MAX_REACHED_T (1 << 2) #define NV_DPCD_LANEX_SET2_PC2_MAX_REACHED_F (0 << 2) #define NV_DPCD_LANEXPLUS1_SET2_PC2_MAX_REACHED_T (1 << 6) #define NV_DPCD_LANEXPLUS1_SET2_PC2_MAX_REACHED_F (0 << 6) #define NV_DPCD_LANEX_SET2_PC2_SHIFT 0 #define NV_DPCD_LANEXPLUS1_SET2_PC2_SHIFT 4 #define NV_DPCD_STATUS_LANEX_CR_DONE_SHIFT 0 #define NV_DPCD_STATUS_LANEX_CR_DONE_NO (0x00000000) #define NV_DPCD_STATUS_LANEX_CR_DONE_YES (0x00000001) #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_SHIFT 1 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_NO (0x00000000 << 1) #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_YES (0x00000001 << 1) #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_SHFIT 2 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_NO (0x00000000 << 2) #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_YES (0x00000001 << 2) #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_SHIFT 4 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_NO (0x00000000 << 4) #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_YES (0x00000001 << 4) #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_SHIFT 5 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_NO (0x00000000 << 5) #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_YES (0x00000001 << 5) #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_SHIFT 6 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_NO (0x00000000 << 6) #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_YES (0x00000001 << 6) #define NV_DPCD_LANE_ALIGN_STATUS_UPDATED (0x00000204) #define NV_DPCD_LANE_ALIGN_STATUS_UPDATED_DONE_NO (0x00000000) #define NV_DPCD_LANE_ALIGN_STATUS_UPDATED_DONE_YES (0x00000001) #define NV_DPCD_STATUS_LANEX_CR_DONE_SHIFT 0 #define NV_DPCD_STATUS_LANEX_CR_DONE_NO (0x00000000) #define NV_DPCD_STATUS_LANEX_CR_DONE_YES (0x00000001) #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_SHIFT 1 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_NO (0x00000000 << 1) #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_YES (0x00000001 << 1) #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_SHFIT 2 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_NO (0x00000000 << 2) #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_YES (0x00000001 << 2) #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_SHIFT 4 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_NO (0x00000000 << 4) #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_YES (0x00000001 << 4) #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_SHIFT 5 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_NO (0x00000000 << 5) #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_YES (0x00000001 << 5) #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_SHIFT 6 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_NO (0x00000000 << 6) #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_YES (0x00000001 << 6) #define NV_DPCD_ADJUST_REQ_LANEX_DC_SHIFT 0 #define NV_DPCD_ADJUST_REQ_LANEX_DC_MASK 0x3 #define NV_DPCD_ADJUST_REQ_LANEX_PE_SHIFT 2 #define NV_DPCD_ADJUST_REQ_LANEX_PE_MASK (0x3 << 2) #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_DC_SHIFT 4 #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_DC_MASK (0x3 << 4) #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_PE_SHIFT 6 #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_PE_MASK (0x3 << 6) #define NV_DPCD_ADJUST_REQ_POST_CURSOR2 (0x0000020C) #define NV_DPCD_ADJUST_REQ_POST_CURSOR2_LANE_MASK 0x3 #define NV_DPCD_ADJUST_REQ_POST_CURSOR2_LANE_SHIFT(i) (i*2) #define NV_DPCD_TRAINING_AUX_RD_INTERVAL (0x0000000E) #define NV_DPCD_TRAINING_LANEX_SET_DC_MAX_REACHED_F (0x00000000 << 2) #endif