diff --git a/drivers/gpu/drm/amd/display/dc/basics/signal_types.c b/drivers/gpu/drm/amd/display/dc/basics/signal_types.c
index 44447e07803adc693707cb4eb34f7b5e4f49c290..247487c3db71986a1a2ae0d0f8ab30b75b353e33 100644
--- a/drivers/gpu/drm/amd/display/dc/basics/signal_types.c
+++ b/drivers/gpu/drm/amd/display/dc/basics/signal_types.c
@@ -44,23 +44,6 @@ bool dc_is_dp_signal(enum signal_type signal)
 		signal == SIGNAL_TYPE_DISPLAY_PORT_MST);
 }
 
-bool dc_is_dp_external_signal(enum signal_type signal)
-{
-	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
-		signal == SIGNAL_TYPE_DISPLAY_PORT_MST);
-}
-
-bool dc_is_analog_signal(enum signal_type signal)
-{
-	switch (signal) {
-	case SIGNAL_TYPE_RGB:
-		return true;
-	break;
-	default:
-		return false;
-	}
-}
-
 bool dc_is_embedded_signal(enum signal_type signal)
 {
 	return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS);
@@ -96,21 +79,3 @@ bool dc_is_audio_capable_signal(enum signal_type signal)
 		signal == SIGNAL_TYPE_WIRELESS);
 }
 
-/*
- * @brief
- * Returns whether the signal is compatible
- * with other digital encoder signal types.
- * This is true for DVI, LVDS, and HDMI signal types.
- */
-bool dc_is_digital_encoder_compatible_signal(enum signal_type signal)
-{
-	switch (signal) {
-	case SIGNAL_TYPE_DVI_SINGLE_LINK:
-	case SIGNAL_TYPE_DVI_DUAL_LINK:
-	case SIGNAL_TYPE_HDMI_TYPE_A:
-	case SIGNAL_TYPE_LVDS:
-		return true;
-	default:
-		return false;
-	}
-}
diff --git a/drivers/gpu/drm/amd/display/dc/bios/command_table.c b/drivers/gpu/drm/amd/display/dc/bios/command_table.c
index d0eedb6235fe8a7fa2458c42ac075648f4ec002e..88aaf53cb8c41080499f67a095dfa9622d731995 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/command_table.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/command_table.c
@@ -56,7 +56,6 @@ static void init_dac_encoder_control(struct bios_parser *bp);
 static void init_dac_output_control(struct bios_parser *bp);
 static void init_blank_crtc(struct bios_parser *bp);
 static void init_set_crtc_timing(struct bios_parser *bp);
-static void init_set_crtc_overscan(struct bios_parser *bp);
 static void init_select_crtc_source(struct bios_parser *bp);
 static void init_enable_crtc(struct bios_parser *bp);
 static void init_enable_crtc_mem_req(struct bios_parser *bp);
@@ -77,7 +76,6 @@ void dal_bios_parser_init_cmd_tbl(struct bios_parser *bp)
 	init_dac_output_control(bp);
 	init_blank_crtc(bp);
 	init_set_crtc_timing(bp);
-	init_set_crtc_overscan(bp);
 	init_select_crtc_source(bp);
 	init_enable_crtc(bp);
 	init_enable_crtc_mem_req(bp);
@@ -1931,59 +1929,6 @@ static enum bp_result set_crtc_using_dtd_timing_v3(
 	return result;
 }
 
-/*******************************************************************************
- ********************************************************************************
- **
- **                  SET CRTC OVERSCAN
- **
- ********************************************************************************
- *******************************************************************************/
-
-static enum bp_result set_crtc_overscan_v1(
-	struct bios_parser *bp,
-	struct bp_hw_crtc_overscan_parameters *bp_params);
-
-static void init_set_crtc_overscan(struct bios_parser *bp)
-{
-	switch (BIOS_CMD_TABLE_PARA_REVISION(SetCRTC_OverScan))	{
-	case 1:
-		bp->cmd_tbl.set_crtc_overscan = set_crtc_overscan_v1;
-		break;
-	default:
-		bp->cmd_tbl.set_crtc_overscan = NULL;
-		break;
-	}
-}
-
-static enum bp_result set_crtc_overscan_v1(
-	struct bios_parser *bp,
-	struct bp_hw_crtc_overscan_parameters *bp_params)
-{
-	enum bp_result result = BP_RESULT_FAILURE;
-	SET_CRTC_OVERSCAN_PARAMETERS params = {0};
-	uint8_t atom_controller_id;
-
-	if (bp->cmd_helper->controller_id_to_atom(
-			bp_params->controller_id, &atom_controller_id))
-		params.ucCRTC = atom_controller_id;
-	else
-		return BP_RESULT_BADINPUT;
-
-	params.usOverscanRight =
-			cpu_to_le16((uint16_t)bp_params->h_overscan_right);
-	params.usOverscanLeft =
-			cpu_to_le16((uint16_t)bp_params->h_overscan_left);
-	params.usOverscanBottom =
-			cpu_to_le16((uint16_t)bp_params->v_overscan_bottom);
-	params.usOverscanTop =
-			cpu_to_le16((uint16_t)bp_params->v_overscan_top);
-
-	if (EXEC_BIOS_CMD_TABLE(SetCRTC_OverScan, params))
-		result = BP_RESULT_OK;
-
-	return result;
-}
-
 /*******************************************************************************
  ********************************************************************************
  **
diff --git a/drivers/gpu/drm/amd/display/dc/bios/command_table.h b/drivers/gpu/drm/amd/display/dc/bios/command_table.h
index e1cd21b6e9680cae3b957c28b131d1e00f2ab3c6..b8e6ef06c0c76150aed27e6410ea7bd63929a07c 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/command_table.h
+++ b/drivers/gpu/drm/amd/display/dc/bios/command_table.h
@@ -75,9 +75,6 @@ struct cmd_tbl {
 	enum bp_result (*set_crtc_timing)(
 		struct bios_parser *bp,
 		struct bp_hw_crtc_timing_parameters *bp_params);
-	enum bp_result (*set_crtc_overscan)(
-		struct bios_parser *bp,
-		struct bp_hw_crtc_overscan_parameters *bp_params);
 	enum bp_result (*select_crtc_source)(
 		struct bios_parser *bp,
 		struct bp_crtc_source_select *bp_params);
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index b0f316344e864b1c2a06b60351b30eca9f9b5372..62cfc5cbe773acabaf0254dbce7163ce58c3dce7 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -38,7 +38,6 @@
 #include "hw_sequencer.h"
 #include "resource.h"
 #include "fixed31_32.h"
-#include "include/asic_capability_interface.h"
 #include "dpcd_defs.h"
 
 #include "dce/dce_11_0_d.h"
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index a661fc6a69dd4d647b3f9d2021bd07481b59e4bc..c9c1b48df38460e4a8405237241cbf1a2899d2cf 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1922,7 +1922,7 @@ static void get_active_converter_info(
 		break;
 	}
 
-	if (link->dpcd_caps.dpcd_rev.raw >= DCS_DPCD_REV_11) {
+	if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_11) {
 		uint8_t det_caps[4];
 		union dwnstream_port_caps_byte0 *port_caps =
 			(union dwnstream_port_caps_byte0 *)det_caps;
diff --git a/drivers/gpu/drm/amd/display/include/asic_capability_interface.h b/drivers/gpu/drm/amd/display/include/asic_capability_interface.h
deleted file mode 100644
index 57cc72fdc5602245ffa20be0faf7c23652a3e3ed..0000000000000000000000000000000000000000
--- a/drivers/gpu/drm/amd/display/include/asic_capability_interface.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright 2012-15 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of enc software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and enc permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: AMD
- *
- */
-
-#ifndef __DAL_ASIC_CAPABILITY_INTERFACE_H__
-#define __DAL_ASIC_CAPABILITY_INTERFACE_H__
-
-/* Include */
-#include "include/asic_capability_types.h"
-
-/* Forward declaration */
-struct hw_asic_id;
-
-/* ASIC capability */
-struct asic_capability {
-	struct dc_context *ctx;
-	struct asic_caps caps;
-	struct asic_stereo_3d_caps stereo_3d_caps;
-	struct asic_bugs bugs;
-	uint32_t data[ASIC_DATA_MAX_NUMBER];
-};
-
-/**
- * Interfaces
- */
-
-/* Create and initialize ASIC capability */
-struct asic_capability *dal_asic_capability_create(struct hw_asic_id *init,
-		struct dc_context *ctx);
-
-/* Destroy ASIC capability and free memory space */
-void dal_asic_capability_destroy(struct asic_capability **cap);
-
-#endif /* __DAL_ASIC_CAPABILITY_INTERFACE_H__ */
diff --git a/drivers/gpu/drm/amd/display/include/asic_capability_types.h b/drivers/gpu/drm/amd/display/include/asic_capability_types.h
deleted file mode 100644
index c44dae04359974c2201464a5a0d67cdb3f26018f..0000000000000000000000000000000000000000
--- a/drivers/gpu/drm/amd/display/include/asic_capability_types.h
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright 2012-15 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: AMD
- *
- */
-#ifndef __DAL_ASIC_CAPABILITY_TYPES_H__
-#define __DAL_ASIC_CAPABILITY_TYPES_H__
-
-/*
- * ASIC Capabilities
- */
-struct asic_caps {
-	bool CONSUMER_SINGLE_SELECTED_TIMING:1;
-	bool UNDERSCAN_ADJUST:1;
-	bool DELTA_SIGMA_SUPPORT:1;
-	bool PANEL_SELF_REFRESH_SUPPORTED:1;
-	bool IS_FUSION:1;
-	bool DP_MST_SUPPORTED:1;
-	bool UNDERSCAN_FOR_HDMI_ONLY:1;
-	bool DVI_CLOCK_SHARE_CAPABILITY:1;
-	bool SUPPORT_CEA861E_FINAL:1;
-	bool MIRABILIS_SUPPORTED:1;
-	bool MIRABILIS_ENABLED_BY_DEFAULT:1;
-	bool DEVICE_TAG_REMAP_SUPPORTED:1;
-	bool HEADLESS_NO_OPM_SUPPORTED:1;
-	bool WIRELESS_LIMIT_TO_720P:1;
-	bool WIRELESS_FULL_TIMING_ADJUSTMENT:1;
-	bool WIRELESS_TIMING_ADJUSTMENT:1;
-	bool WIRELESS_COMPRESSED_AUDIO:1;
-	bool VCE_SUPPORTED:1;
-	bool HPD_CHECK_FOR_EDID:1;
-	bool NEED_MC_TUNING:1;
-	bool SKIP_PSR_WAIT_FOR_PLL_LOCK_BIT:1;
-	bool DFSBYPASS_DYNAMIC_SUPPORT:1;
-	bool SUPPORT_8BPP:1;
-};
-
-/*
- * ASIC Stereo 3D Caps
- */
-struct asic_stereo_3d_caps {
-	bool SUPPORTED:1;
-	bool DISPLAY_BASED_ON_WS:1;
-	bool HDMI_FRAME_PACK:1;
-	bool INTERLACE_FRAME_PACK:1;
-	bool DISPLAYPORT_FRAME_PACK:1;
-	bool DISPLAYPORT_FRAME_ALT:1;
-	bool INTERLEAVE:1;
-};
-
-/*
- * ASIC Bugs
- */
-struct asic_bugs {
-	bool MST_SYMBOL_MISALIGNMENT:1;
-	bool PSR_2X_LANE_GANGING:1;
-	bool LB_WA_IS_SUPPORTED:1;
-	bool ROM_REGISTER_ACCESS:1;
-	bool PSR_WA_OVERSCAN_CRC_ERROR:1;
-};
-
-/*
- * ASIC Data
- */
-enum asic_data {
-	ASIC_DATA_FIRST = 0,
-	ASIC_DATA_DCE_VERSION = ASIC_DATA_FIRST,
-	ASIC_DATA_DCE_VERSION_MINOR,
-	ASIC_DATA_LINEBUFFER_SIZE,
-	ASIC_DATA_DRAM_BANDWIDTH_EFFICIENCY,
-	ASIC_DATA_MC_LATENCY,
-	ASIC_DATA_MC_LATENCY_SLOW,
-	ASIC_DATA_MEMORYTYPE_MULTIPLIER,
-	ASIC_DATA_PATH_NUM_PER_DPMST_CONNECTOR,
-	ASIC_DATA_MAX_UNDERSCAN_PERCENTAGE,
-	ASIC_DATA_VIEWPORT_PIXEL_GRANULARITY,
-	ASIC_DATA_MIN_DISPCLK_FOR_UNDERSCAN,
-	ASIC_DATA_DOWNSCALE_LIMIT,
-	ASIC_DATA_MAX_NUMBER /* end of enum */
-};
-
-/*
- * ASIC Feature Flags
- */
-struct asic_feature_flags {
-	union {
-		uint32_t raw;
-		struct {
-			uint32_t LEGACY_CLIENT:1;
-			uint32_t PACKED_PIXEL_FORMAT:1;
-			uint32_t WORKSTATION_STEREO:1;
-			uint32_t WORKSTATION:1;
-		} bits;
-	};
-};
-
-#endif /* __DAL_ASIC_CAPABILITY_TYPES_H__ */
diff --git a/drivers/gpu/drm/amd/display/include/bios_parser_types.h b/drivers/gpu/drm/amd/display/include/bios_parser_types.h
index 9ab9065735f7525fe1f10d5fd66877b65cea678a..7de4fa5a0726277e4c01e716ffa6c624e186f097 100644
--- a/drivers/gpu/drm/amd/display/include/bios_parser_types.h
+++ b/drivers/gpu/drm/amd/display/include/bios_parser_types.h
@@ -190,14 +190,6 @@ struct bp_hw_crtc_timing_parameters {
 	} flags;
 };
 
-struct bp_hw_crtc_overscan_parameters {
-	enum controller_id controller_id;
-	uint32_t h_overscan_left;
-	uint32_t h_overscan_right;
-	uint32_t v_overscan_top;
-	uint32_t v_overscan_bottom;
-};
-
 struct bp_adjust_pixel_clock_parameters {
 	/* Input: Signal Type - to be converted to Encoder mode */
 	enum signal_type signal_type;
diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h
index 0a6ba91e3eba5e262ee2d74bc5f0cf02200c656f..effe03b8f4181a4e7d828bf0a1febc78de0a5d9e 100644
--- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h
+++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h
@@ -52,12 +52,6 @@ enum ddc_service_type {
 	DDC_SERVICE_TYPE_DISPLAY_PORT_MST,
 };
 
-enum dcs_dpcd_revision {
-	DCS_DPCD_REV_10 = 0x10,
-	DCS_DPCD_REV_11 = 0x11,
-	DCS_DPCD_REV_12 = 0x12
-};
-
 /**
  * display sink capability
  */
@@ -97,7 +91,6 @@ struct display_sink_capability {
 	uint32_t dp_link_rate;
 	uint32_t dp_link_spead;
 
-	enum dcs_dpcd_revision dpcd_revision;
 	/* If dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER,
 	indicates 'Frame Sequential-to-lllFrame Pack' conversion capability.*/
 	bool is_dp_hdmi_s3d_converter;
diff --git a/drivers/gpu/drm/amd/display/include/irq_interface.h b/drivers/gpu/drm/amd/display/include/irq_interface.h
deleted file mode 100644
index 077ded3fbedd03e630e24752c479b4c9bf1689d0..0000000000000000000000000000000000000000
--- a/drivers/gpu/drm/amd/display/include/irq_interface.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2012-15 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: AMD
- *
- */
-
-#ifndef __DAL_IRQ_INTERFACE_H__
-#define __DAL_IRQ_INTERFACE_H__
-
-#include "gpio_types.h"
-
-#endif
diff --git a/drivers/gpu/drm/amd/display/include/link_service_types.h b/drivers/gpu/drm/amd/display/include/link_service_types.h
index 6160a467ba37538663c11367edcdeefd5fe0777c..479e5fff8a00b1e794a4ff3acf7478f0a15aa9e9 100644
--- a/drivers/gpu/drm/amd/display/include/link_service_types.h
+++ b/drivers/gpu/drm/amd/display/include/link_service_types.h
@@ -38,34 +38,11 @@ enum {
 	MAX_CONTROLLER_NUM = 6
 };
 
-enum link_service_type {
-	LINK_SERVICE_TYPE_LEGACY = 0,
-	LINK_SERVICE_TYPE_DP_SST,
-	LINK_SERVICE_TYPE_DP_MST,
-	LINK_SERVICE_TYPE_MAX
-};
-
-enum dpcd_value_mask {
-	DPCD_VALUE_MASK_MAX_LANE_COUNT_LANE_COUNT = 0x1F,
-	DPCD_VALUE_MASK_MAX_LANE_COUNT_TPS3_SUPPORTED = 0x40,
-	DPCD_VALUE_MASK_MAX_LANE_COUNT_ENHANCED_FRAME_EN = 0x80,
-	DPCD_VALUE_MASK_MAX_DOWNSPREAD = 0x01,
-	DPCD_VALUE_MASK_LANE_ALIGN_STATUS_INTERLANE_ALIGN_DONE = 0x01
-};
-
 enum dp_power_state {
 	DP_POWER_STATE_D0 = 1,
 	DP_POWER_STATE_D3
 };
 
-enum dpcd_downstream_port_types {
-	DPCD_DOWNSTREAM_DP,
-	DPCD_DOWNSTREAM_VGA,
-	DPCD_DOWNSTREAM_DVI_HDMI,
-	/* has no EDID (TV, CV) */
-	DPCD_DOWNSTREAM_NON_DDC
-};
-
 enum edp_revision {
 	/* eDP version 1.1 or lower */
 	EDP_REVISION_11 = 0x00,
@@ -135,36 +112,6 @@ enum dp_panel_mode {
 	DP_PANEL_MODE_SPECIAL
 };
 
-/**
- * @brief LinkServiceInitOptions to set certain bits
- */
-struct link_service_init_options {
-	uint32_t APPLY_MISALIGNMENT_BUG_WORKAROUND:1;
-};
-
-/**
- * @brief data required to initialize LinkService
- */
-struct link_service_init_data {
-	/* number of displays indices which the MST Mgr would manange*/
-	uint32_t num_of_displays;
-	enum link_service_type link_type;
-	/*struct mst_mgr_callback_object*topology_change_callback;*/
-	/* native aux access */
-	struct ddc_service *dpcd_access_srv;
-	/* for calling HWSS to program HW */
-	struct hw_sequencer *hwss;
-	/* the source which to register IRQ on */
-	enum dc_irq_source irq_src_hpd_rx;
-	enum dc_irq_source irq_src_dp_sink;
-	/* other init options such as SW Workarounds */
-	struct link_service_init_options init_options;
-	uint32_t connector_enum_id;
-	struct graphics_object_id connector_id;
-	struct dc_context *ctx;
-	struct topology_mgr *tm;
-};
-
 /* DPCD_ADDR_TRAINING_LANEx_SET registers value */
 union dpcd_training_lane_set {
 	struct {
@@ -189,28 +136,6 @@ union dpcd_training_lane_set {
 	uint8_t raw;
 };
 
-/**
- * @brief represent the 16 byte
- *  global unique identifier
- */
-struct mst_guid {
-	uint8_t ids[16];
-};
-
-/**
- * @brief represents the relative address used
- * to identify a node in MST topology network
- */
-struct mst_rad {
-	/* number of links. rad[0] up to
-	 * rad [linkCount - 1] are valid. */
-	uint32_t rad_link_count;
-	/* relative address. rad[0] is the
-	 * first device connected to the source.	*/
-	uint8_t rad[15];
-	/* extra 10 bytes for underscores; for e.g.:2_1_8*/
-	int8_t rad_str[25];
-};
 
 /* DP MST stream allocation (payload bandwidth number) */
 struct dp_mst_stream_allocation {
diff --git a/drivers/gpu/drm/amd/display/include/signal_types.h b/drivers/gpu/drm/amd/display/include/signal_types.h
index a50f7ed74a332f631f429322c1e53d7a46df313e..d87f84a56fcc6674d8fd5c836df2239ff1c92d84 100644
--- a/drivers/gpu/drm/amd/display/include/signal_types.h
+++ b/drivers/gpu/drm/amd/display/include/signal_types.h
@@ -47,13 +47,10 @@ enum signal_type {
 bool dc_is_hdmi_signal(enum signal_type signal);
 bool dc_is_dp_sst_signal(enum signal_type signal);
 bool dc_is_dp_signal(enum signal_type signal);
-bool dc_is_dp_external_signal(enum signal_type signal);
-bool dc_is_analog_signal(enum signal_type signal);
 bool dc_is_embedded_signal(enum signal_type signal);
 bool dc_is_dvi_signal(enum signal_type signal);
 bool dc_is_dvi_single_link_signal(enum signal_type signal);
 bool dc_is_dual_link_signal(enum signal_type signal);
 bool dc_is_audio_capable_signal(enum signal_type signal);
-bool dc_is_digital_encoder_compatible_signal(enum signal_type signal);
 
 #endif