diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_aux_regs.h')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_aux_regs.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h b/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h new file mode 100644 index 0000000000..5185345277 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2023 Intel Corporation + */ + +#ifndef __INTEL_DP_AUX_REGS_H__ +#define __INTEL_DP_AUX_REGS_H__ + +#include "intel_display_reg_defs.h" + +/* + * The aux channel provides a way to talk to the signal sink for DDC etc. Max + * packet size supported is 20 bytes in each direction, hence the 5 fixed data + * registers + */ +#define _DPA_AUX_CH_CTL (DISPLAY_MMIO_BASE(dev_priv) + 0x64010) +#define _DPA_AUX_CH_DATA1 (DISPLAY_MMIO_BASE(dev_priv) + 0x64014) + +#define _DPB_AUX_CH_CTL (DISPLAY_MMIO_BASE(dev_priv) + 0x64110) +#define _DPB_AUX_CH_DATA1 (DISPLAY_MMIO_BASE(dev_priv) + 0x64114) + +#define DP_AUX_CH_CTL(aux_ch) _MMIO_PORT(aux_ch, _DPA_AUX_CH_CTL, _DPB_AUX_CH_CTL) +#define DP_AUX_CH_DATA(aux_ch, i) _MMIO(_PORT(aux_ch, _DPA_AUX_CH_DATA1, _DPB_AUX_CH_DATA1) + (i) * 4) /* 5 registers */ + +#define _XELPDP_USBC1_AUX_CH_CTL 0x16F210 +#define _XELPDP_USBC2_AUX_CH_CTL 0x16F410 +#define _XELPDP_USBC3_AUX_CH_CTL 0x16F610 +#define _XELPDP_USBC4_AUX_CH_CTL 0x16F810 + +#define XELPDP_DP_AUX_CH_CTL(aux_ch) _MMIO(_PICK(aux_ch, \ + _DPA_AUX_CH_CTL, \ + _DPB_AUX_CH_CTL, \ + 0, /* port/aux_ch C is non-existent */ \ + _XELPDP_USBC1_AUX_CH_CTL, \ + _XELPDP_USBC2_AUX_CH_CTL, \ + _XELPDP_USBC3_AUX_CH_CTL, \ + _XELPDP_USBC4_AUX_CH_CTL)) + +#define _XELPDP_USBC1_AUX_CH_DATA1 0x16F214 +#define _XELPDP_USBC2_AUX_CH_DATA1 0x16F414 +#define _XELPDP_USBC3_AUX_CH_DATA1 0x16F614 +#define _XELPDP_USBC4_AUX_CH_DATA1 0x16F814 + +#define XELPDP_DP_AUX_CH_DATA(aux_ch, i) _MMIO(_PICK(aux_ch, \ + _DPA_AUX_CH_DATA1, \ + _DPB_AUX_CH_DATA1, \ + 0, /* port/aux_ch C is non-existent */ \ + _XELPDP_USBC1_AUX_CH_DATA1, \ + _XELPDP_USBC2_AUX_CH_DATA1, \ + _XELPDP_USBC3_AUX_CH_DATA1, \ + _XELPDP_USBC4_AUX_CH_DATA1) + (i) * 4) + +#define DP_AUX_CH_CTL_SEND_BUSY REG_BIT(31) +#define DP_AUX_CH_CTL_DONE REG_BIT(30) +#define DP_AUX_CH_CTL_INTERRUPT REG_BIT(29) +#define DP_AUX_CH_CTL_TIME_OUT_ERROR REG_BIT(28) + +#define DP_AUX_CH_CTL_TIME_OUT_MASK REG_GENMASK(27, 26) +#define DP_AUX_CH_CTL_TIME_OUT_400us REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 0) +#define DP_AUX_CH_CTL_TIME_OUT_600us REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 1) +#define DP_AUX_CH_CTL_TIME_OUT_800us REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 2) +#define DP_AUX_CH_CTL_TIME_OUT_MAX REG_FIELD_PREP(DP_AUX_CH_CTL_TIME_OUT_MASK, 3) /* Varies per platform */ +#define DP_AUX_CH_CTL_RECEIVE_ERROR REG_BIT(25) +#define DP_AUX_CH_CTL_MESSAGE_SIZE_MASK REG_GENMASK(24, 20) +#define DP_AUX_CH_CTL_MESSAGE_SIZE(x) REG_FIELD_PREP(DP_AUX_CH_CTL_MESSAGE_SIZE_MASK, (x)) +#define DP_AUX_CH_CTL_PRECHARGE_2US_MASK REG_GENMASK(19, 16) /* pre-skl */ +#define DP_AUX_CH_CTL_PRECHARGE_2US(x) REG_FIELD_PREP(DP_AUX_CH_CTL_PRECHARGE_2US_MASK, (x)) +#define XELPDP_DP_AUX_CH_CTL_POWER_REQUEST REG_BIT(19) /* mtl+ */ +#define XELPDP_DP_AUX_CH_CTL_POWER_STATUS REG_BIT(18) /* mtl+ */ +#define DP_AUX_CH_CTL_AUX_AKSV_SELECT REG_BIT(15) +#define DP_AUX_CH_CTL_MANCHESTER_TEST REG_BIT(14) /* pre-hsw */ +#define DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL REG_BIT(14) /* skl+ */ +#define DP_AUX_CH_CTL_SYNC_TEST REG_BIT(13) /* pre-hsw */ +#define DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL REG_BIT(13) /* skl+ */ +#define DP_AUX_CH_CTL_DEGLITCH_TEST REG_BIT(12) /* pre-hsw */ +#define DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL REG_BIT(12) /* skl+ */ +#define DP_AUX_CH_CTL_PRECHARGE_TEST REG_BIT(11) /* pre-hsw */ +#define DP_AUX_CH_CTL_TBT_IO REG_BIT(11) /* icl+ */ +#define DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK REG_GENMASK(10, 0) /* pre-skl */ +#define DP_AUX_CH_CTL_BIT_CLOCK_2X(x) REG_FIELD_PREP(DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK, (x)) +#define DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK REG_GENMASK(9, 5) /* skl+ */ +#define DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c) REG_FIELD_PREP(DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK, (c) - 1) +#define DP_AUX_CH_CTL_SYNC_PULSE_SKL_MASK REG_GENMASK(4, 0) /* skl+ */ +#define DP_AUX_CH_CTL_SYNC_PULSE_SKL(c) REG_FIELD_PREP(DP_AUX_CH_CTL_SYNC_PULSE_SKL_MASK, (c) - 1) + +#endif /* __INTEL_DP_AUX_REGS_H__ */ |