intel_dp_aux_regs.h

  1/* SPDX-License-Identifier: MIT */
  2/*
  3 * Copyright © 2023 Intel Corporation
  4 */
  5
  6#ifndef __INTEL_DP_AUX_REGS_H__
  7#define __INTEL_DP_AUX_REGS_H__
  8
  9#include "intel_display_reg_defs.h"
 10
 11/*
 12 * The aux channel provides a way to talk to the signal sink for DDC etc. Max
 13 * packet size supported is 20 bytes in each direction, hence the 5 fixed data
 14 * registers
 15 */
 16
 17/*
 18 * Wrapper macro to convert from aux_ch to the index used in some of the
 19 * registers.
 20 */
 21#define __xe2lpd_aux_ch_idx(aux_ch)						\
 22	(aux_ch >= AUX_CH_USBC1 ? aux_ch : AUX_CH_USBC4 + 1 + (aux_ch) - AUX_CH_A)
 23
 24#define _DPA_AUX_CH_CTL			0x64010
 25#define _DPB_AUX_CH_CTL			0x64110
 26#define DP_AUX_CH_CTL(aux_ch)		_MMIO_PORT(aux_ch, _DPA_AUX_CH_CTL,	\
 27						   _DPB_AUX_CH_CTL)
 28#define VLV_DP_AUX_CH_CTL(aux_ch)	_MMIO(VLV_DISPLAY_BASE + \
 29					      _PORT(aux_ch, _DPA_AUX_CH_CTL, _DPB_AUX_CH_CTL))
 30
 31#define _PCH_DPB_AUX_CH_CTL		0xe4110
 32#define _PCH_DPC_AUX_CH_CTL		0xe4210
 33#define PCH_DP_AUX_CH_CTL(aux_ch)	_MMIO_PORT((aux_ch) - AUX_CH_B, _PCH_DPB_AUX_CH_CTL, _PCH_DPC_AUX_CH_CTL)
 34
 35#define _XELPDP_USBC1_AUX_CH_CTL	0x16f210
 36#define _XELPDP_USBC2_AUX_CH_CTL	0x16f410
 37#define _XELPDP_DP_AUX_CH_CTL(aux_ch)						\
 38		_MMIO(_PICK_EVEN_2RANGES(aux_ch, AUX_CH_USBC1,			\
 39					 _DPA_AUX_CH_CTL, _DPB_AUX_CH_CTL,	\
 40					 _XELPDP_USBC1_AUX_CH_CTL,		\
 41					 _XELPDP_USBC2_AUX_CH_CTL))
 42#define XELPDP_DP_AUX_CH_CTL(i915__, aux_ch)					\
 43		(DISPLAY_VER(i915__) >= 20 ?					\
 44		 _XELPDP_DP_AUX_CH_CTL(__xe2lpd_aux_ch_idx(aux_ch)) :		\
 45		 _XELPDP_DP_AUX_CH_CTL(aux_ch))
 46#define   DP_AUX_CH_CTL_SEND_BUSY		REG_BIT(31)
 47#define   DP_AUX_CH_CTL_DONE			REG_BIT(30)
 48#define   DP_AUX_CH_CTL_INTERRUPT		REG_BIT(29)
 49#define   DP_AUX_CH_CTL_TIME_OUT_ERROR		REG_BIT(28)
 50#define   DP_AUX_CH_CTL_TIME_OUT_MASK		REG_GENMASK(27, 26)
 51#define   DP_AUX_CH_CTL_TIME_OUT_400us		REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 0)
 52#define   DP_AUX_CH_CTL_TIME_OUT_600us		REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 1)
 53#define   DP_AUX_CH_CTL_TIME_OUT_800us		REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 2)
 54#define   DP_AUX_CH_CTL_TIME_OUT_MAX		REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 3) /* Varies per platform */
 55#define   DP_AUX_CH_CTL_RECEIVE_ERROR		REG_BIT(25)
 56#define   DP_AUX_CH_CTL_MESSAGE_SIZE_MASK	REG_GENMASK(24, 20)
 57#define   DP_AUX_CH_CTL_MESSAGE_SIZE(x)		REG_FIELD_PREP(DP_AUX_CH_CTL_MESSAGE_SIZE_MASK, (x))
 58#define   DP_AUX_CH_CTL_PRECHARGE_2US_MASK	REG_GENMASK(19, 16) /* pre-skl */
 59#define   DP_AUX_CH_CTL_PRECHARGE_2US(x)	REG_FIELD_PREP(DP_AUX_CH_CTL_PRECHARGE_2US_MASK, (x))
 60#define   XELPDP_DP_AUX_CH_CTL_POWER_REQUEST	REG_BIT(19) /* mtl+ */
 61#define   XELPDP_DP_AUX_CH_CTL_POWER_STATUS	REG_BIT(18) /* mtl+ */
 62#define   DP_AUX_CH_CTL_AUX_AKSV_SELECT		REG_BIT(15)
 63#define   DP_AUX_CH_CTL_MANCHESTER_TEST		REG_BIT(14) /* pre-hsw */
 64#define   DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL	REG_BIT(14) /* skl+ */
 65#define   DP_AUX_CH_CTL_SYNC_TEST		REG_BIT(13) /* pre-hsw */
 66#define   DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL	REG_BIT(13) /* skl+ */
 67#define   DP_AUX_CH_CTL_DEGLITCH_TEST		REG_BIT(12) /* pre-hsw */
 68#define   DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL	REG_BIT(12) /* skl+ */
 69#define   DP_AUX_CH_CTL_PRECHARGE_TEST		REG_BIT(11) /* pre-hsw */
 70#define   DP_AUX_CH_CTL_TBT_IO			REG_BIT(11) /* icl+ */
 71#define   DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK	REG_GENMASK(10, 0) /* pre-skl */
 72#define   DP_AUX_CH_CTL_BIT_CLOCK_2X(x)		REG_FIELD_PREP(DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK, (x))
 73#define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK	REG_GENMASK(9, 5) /* skl+ */
 74#define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c)	REG_FIELD_PREP(DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK, (c) - 1)
 75#define   DP_AUX_CH_CTL_SYNC_PULSE_SKL_MASK	REG_GENMASK(4, 0) /* skl+ */
 76#define   DP_AUX_CH_CTL_SYNC_PULSE_SKL(c)	REG_FIELD_PREP(DP_AUX_CH_CTL_SYNC_PULSE_SKL_MASK, (c) - 1)
 77
 78#define _DPA_AUX_CH_DATA1		0x64014
 79#define _DPB_AUX_CH_DATA1		0x64114
 80#define DP_AUX_CH_DATA(aux_ch, i)	_MMIO(_PORT(aux_ch, _DPA_AUX_CH_DATA1,	\
 81						    _DPB_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
 82#define VLV_DP_AUX_CH_DATA(aux_ch, i)	_MMIO(VLV_DISPLAY_BASE + _PORT(aux_ch, _DPA_AUX_CH_DATA1, \
 83								       _DPB_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
 84
 85#define _PCH_DPB_AUX_CH_DATA1		0xe4114
 86#define _PCH_DPC_AUX_CH_DATA1		0xe4214
 87#define PCH_DP_AUX_CH_DATA(aux_ch, i)	_MMIO(_PORT((aux_ch) - AUX_CH_B, _PCH_DPB_AUX_CH_DATA1, _PCH_DPC_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
 88
 89#define _XELPDP_USBC1_AUX_CH_DATA1	0x16f214
 90#define _XELPDP_USBC2_AUX_CH_DATA1	0x16f414
 91#define _XELPDP_DP_AUX_CH_DATA(aux_ch, i)					\
 92		_MMIO(_PICK_EVEN_2RANGES(aux_ch, AUX_CH_USBC1,			\
 93					 _DPA_AUX_CH_DATA1, _DPB_AUX_CH_DATA1,	\
 94					 _XELPDP_USBC1_AUX_CH_DATA1,		\
 95					 _XELPDP_USBC2_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
 96#define XELPDP_DP_AUX_CH_DATA(i915__, aux_ch, i)				\
 97		(DISPLAY_VER(i915__) >= 20 ?					\
 98		 _XELPDP_DP_AUX_CH_DATA(__xe2lpd_aux_ch_idx(aux_ch), i) :	\
 99		 _XELPDP_DP_AUX_CH_DATA(aux_ch, i))
100
101/* PICA Power Well Control */
102#define XE2LPD_PICA_PW_CTL			_MMIO(0x16fe04)
103#define   XE2LPD_PICA_CTL_POWER_REQUEST		REG_BIT(31)
104#define   XE2LPD_PICA_CTL_POWER_STATUS		REG_BIT(30)
105
106#endif /* __INTEL_DP_AUX_REGS_H__ */