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 | 84 |
1 files changed, 84 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 000000000000..5702f318d537 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_regs.h @@ -0,0 +1,84 @@ +/* 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 (1 << 31) +#define DP_AUX_CH_CTL_DONE (1 << 30) +#define DP_AUX_CH_CTL_INTERRUPT (1 << 29) +#define DP_AUX_CH_CTL_TIME_OUT_ERROR (1 << 28) +#define DP_AUX_CH_CTL_TIME_OUT_400us (0 << 26) +#define DP_AUX_CH_CTL_TIME_OUT_600us (1 << 26) +#define DP_AUX_CH_CTL_TIME_OUT_800us (2 << 26) +#define DP_AUX_CH_CTL_TIME_OUT_MAX (3 << 26) /* Varies per platform */ +#define DP_AUX_CH_CTL_TIME_OUT_MASK (3 << 26) +#define DP_AUX_CH_CTL_RECEIVE_ERROR (1 << 25) +#define DP_AUX_CH_CTL_MESSAGE_SIZE_MASK (0x1f << 20) +#define DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT 20 +#define XELPDP_DP_AUX_CH_CTL_POWER_REQUEST REG_BIT(19) +#define XELPDP_DP_AUX_CH_CTL_POWER_STATUS REG_BIT(18) +#define DP_AUX_CH_CTL_PRECHARGE_2US_MASK (0xf << 16) +#define DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT 16 +#define DP_AUX_CH_CTL_AUX_AKSV_SELECT (1 << 15) +#define DP_AUX_CH_CTL_MANCHESTER_TEST (1 << 14) +#define DP_AUX_CH_CTL_SYNC_TEST (1 << 13) +#define DP_AUX_CH_CTL_DEGLITCH_TEST (1 << 12) +#define DP_AUX_CH_CTL_PRECHARGE_TEST (1 << 11) +#define DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK (0x7ff) +#define DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT 0 +#define DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL (1 << 14) +#define DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL (1 << 13) +#define DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL (1 << 12) +#define DP_AUX_CH_CTL_TBT_IO (1 << 11) +#define DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK (0x1f << 5) +#define DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c) (((c) - 1) << 5) +#define DP_AUX_CH_CTL_SYNC_PULSE_SKL(c) ((c) - 1) + +#endif /* __INTEL_DP_AUX_REGS_H__ */ |