/* 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