diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
index ea5380e24c3c..b783ab39a075 100644
--- a/drivers/gpu/drm/radeon/Makefile
+++ b/drivers/gpu/drm/radeon/Makefile
@@ -49,7 +49,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
 	rv770_smc.o cypress_dpm.o btc_dpm.o sumo_dpm.o sumo_smc.o trinity_dpm.o \
 	trinity_smc.o ni_dpm.o si_smc.o si_dpm.o kv_smc.o kv_dpm.o ci_smc.o \
 	ci_dpm.o dce6_afmt.o radeon_vm.o radeon_ucode.o radeon_ib.o \
-	radeon_sync.o radeon_audio.o radeon_dp_auxch.o radeon_dp_mst.o
+	radeon_sync.o radeon_audio.o radeon_dp_auxch.o
 
 radeon-$(CONFIG_MMU_NOTIFIER) += radeon_mn.o
 
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index c94e429e75f9..e27da31d4f62 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -616,13 +616,6 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
 		}
 	}
 
-	if (radeon_encoder->is_mst_encoder) {
-		struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv;
-		struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv;
-
-		dp_clock = dig_connector->dp_clock;
-	}
-
 	/* use recommended ref_div for ss */
 	if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
 		if (radeon_crtc->ss_enabled) {
@@ -971,9 +964,7 @@ static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_
 	radeon_crtc->bpc = 8;
 	radeon_crtc->ss_enabled = false;
 
-	if (radeon_encoder->is_mst_encoder) {
-		radeon_dp_mst_prepare_pll(crtc, mode);
-	} else if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
+	if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
 	    (radeon_encoder_get_dp_bridge_encoder_id(radeon_crtc->encoder) != ENCODER_OBJECT_ID_NONE)) {
 		struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 		struct drm_connector *connector =
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index 70bd84b7ef2b..597446a8df34 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -681,15 +681,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
 	struct drm_connector *connector;
 	struct radeon_connector *radeon_connector;
 	struct radeon_connector_atom_dig *dig_connector;
-	struct radeon_encoder_atom_dig *dig_enc;
 
-	if (radeon_encoder_is_digital(encoder)) {
-		dig_enc = radeon_encoder->enc_priv;
-		if (dig_enc->active_mst_links)
-			return ATOM_ENCODER_MODE_DP_MST;
-	}
-	if (radeon_encoder->is_mst_encoder || radeon_encoder->offset)
-		return ATOM_ENCODER_MODE_DP_MST;
 	/* dp bridges are always DP */
 	if (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)
 		return ATOM_ENCODER_MODE_DP;
@@ -1737,10 +1729,6 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
 	case DRM_MODE_DPMS_SUSPEND:
 	case DRM_MODE_DPMS_OFF:
 
-		/* don't power off encoders with active MST links */
-		if (dig->active_mst_links)
-			return;
-
 		if (ASIC_IS_DCE4(rdev)) {
 			if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector)
 				atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0);
@@ -2006,53 +1994,6 @@ atombios_set_encoder_crtc_source(struct drm_encoder *encoder)
 	radeon_atombios_encoder_crtc_scratch_regs(encoder, radeon_crtc->crtc_id);
 }
 
-void
-atombios_set_mst_encoder_crtc_source(struct drm_encoder *encoder, int fe)
-{
-	struct drm_device *dev = encoder->dev;
-	struct radeon_device *rdev = dev->dev_private;
-	struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
-	int index = GetIndexIntoMasterTable(COMMAND, SelectCRTC_Source);
-	uint8_t frev, crev;
-	union crtc_source_param args;
-
-	memset(&args, 0, sizeof(args));
-
-	if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
-		return;
-
-	if (frev != 1 && crev != 2)
-		DRM_ERROR("Unknown table for MST %d, %d\n", frev, crev);
-
-	args.v2.ucCRTC = radeon_crtc->crtc_id;
-	args.v2.ucEncodeMode = ATOM_ENCODER_MODE_DP_MST;
-
-	switch (fe) {
-	case 0:
-		args.v2.ucEncoderID = ASIC_INT_DIG1_ENCODER_ID;
-		break;
-	case 1:
-		args.v2.ucEncoderID = ASIC_INT_DIG2_ENCODER_ID;
-		break;
-	case 2:
-		args.v2.ucEncoderID = ASIC_INT_DIG3_ENCODER_ID;
-		break;
-	case 3:
-		args.v2.ucEncoderID = ASIC_INT_DIG4_ENCODER_ID;
-		break;
-	case 4:
-		args.v2.ucEncoderID = ASIC_INT_DIG5_ENCODER_ID;
-		break;
-	case 5:
-		args.v2.ucEncoderID = ASIC_INT_DIG6_ENCODER_ID;
-		break;
-	case 6:
-		args.v2.ucEncoderID = ASIC_INT_DIG7_ENCODER_ID;
-		break;
-	}
-	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
-}
-
 static void
 atombios_apply_encoder_quirks(struct drm_encoder *encoder,
 			      struct drm_display_mode *mode)
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 28c4413f4dc8..204127bad89c 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -826,8 +826,6 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
 	}
 
 	radeon_link_encoder_connector(dev);
-
-	radeon_setup_mst_connector(dev);
 	return true;
 }
 
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 58db79921cd3..f7431d224604 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -37,33 +37,12 @@
 #include <linux/pm_runtime.h>
 #include <linux/vga_switcheroo.h>
 
-static int radeon_dp_handle_hpd(struct drm_connector *connector)
-{
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
-	int ret;
-
-	ret = radeon_dp_mst_check_status(radeon_connector);
-	if (ret == -EINVAL)
-		return 1;
-	return 0;
-}
 void radeon_connector_hotplug(struct drm_connector *connector)
 {
 	struct drm_device *dev = connector->dev;
 	struct radeon_device *rdev = dev->dev_private;
 	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 
-	if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
-		struct radeon_connector_atom_dig *dig_connector =
-			radeon_connector->con_priv;
-
-		if (radeon_connector->is_mst_connector)
-			return;
-		if (dig_connector->is_mst) {
-			radeon_dp_handle_hpd(connector);
-			return;
-		}
-	}
 	/* bail if the connector does not have hpd pin, e.g.,
 	 * VGA, TV, etc.
 	 */
@@ -1664,9 +1643,6 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 	struct drm_encoder *encoder = radeon_best_single_encoder(connector);
 	int r;
 
-	if (radeon_dig_connector->is_mst)
-		return connector_status_disconnected;
-
 	if (!drm_kms_helper_is_poll_worker()) {
 		r = pm_runtime_get_sync(connector->dev->dev);
 		if (r < 0) {
@@ -1729,21 +1705,12 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 		radeon_dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector);
 		if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
 			ret = connector_status_connected;
-			if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
+			if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
 				radeon_dp_getdpcd(radeon_connector);
-				r = radeon_dp_mst_probe(radeon_connector);
-				if (r == 1)
-					ret = connector_status_disconnected;
-			}
 		} else {
 			if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
-				if (radeon_dp_getdpcd(radeon_connector)) {
-					r = radeon_dp_mst_probe(radeon_connector);
-					if (r == 1)
-						ret = connector_status_disconnected;
-					else
-						ret = connector_status_connected;
-				}
+				if (radeon_dp_getdpcd(radeon_connector))
+					ret = connector_status_connected;
 			} else {
 				/* try non-aux ddc (DP to DVI/HDMI/etc. adapter) */
 				if (radeon_ddc_probe(radeon_connector, false))
@@ -2561,25 +2528,3 @@ radeon_add_legacy_connector(struct drm_device *dev,
 	connector->display_info.subpixel_order = subpixel_order;
 	drm_connector_register(connector);
 }
-
-void radeon_setup_mst_connector(struct drm_device *dev)
-{
-	struct radeon_device *rdev = dev->dev_private;
-	struct drm_connector *connector;
-	struct radeon_connector *radeon_connector;
-
-	if (!ASIC_IS_DCE5(rdev))
-		return;
-
-	if (radeon_mst == 0)
-		return;
-
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		radeon_connector = to_radeon_connector(connector);
-
-		if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
-			continue;
-
-		radeon_dp_mst_init(radeon_connector);
-	}
-}
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 15692cb241fc..10548a184cc5 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1437,7 +1437,6 @@ int radeon_device_init(struct radeon_device *rdev,
 		goto failed;
 
 	radeon_gem_debugfs_init(rdev);
-	radeon_mst_debugfs_init(rdev);
 
 	if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
 		/* Acceleration not working on AGP card try again
diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c
deleted file mode 100644
index 54ced1f4ff67..000000000000
--- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
+++ /dev/null
@@ -1,778 +0,0 @@
-// SPDX-License-Identifier: MIT
-
-#include <drm/display/drm_dp_mst_helper.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_file.h>
-#include <drm/drm_probe_helper.h>
-
-#include "atom.h"
-#include "ni_reg.h"
-#include "radeon.h"
-
-static struct radeon_encoder *radeon_dp_create_fake_mst_encoder(struct radeon_connector *connector);
-
-static int radeon_atom_set_enc_offset(int id)
-{
-	static const int offsets[] = { EVERGREEN_CRTC0_REGISTER_OFFSET,
-				       EVERGREEN_CRTC1_REGISTER_OFFSET,
-				       EVERGREEN_CRTC2_REGISTER_OFFSET,
-				       EVERGREEN_CRTC3_REGISTER_OFFSET,
-				       EVERGREEN_CRTC4_REGISTER_OFFSET,
-				       EVERGREEN_CRTC5_REGISTER_OFFSET,
-				       0x13830 - 0x7030 };
-
-	return offsets[id];
-}
-
-static int radeon_dp_mst_set_be_cntl(struct radeon_encoder *primary,
-				     struct radeon_encoder_mst *mst_enc,
-				     enum radeon_hpd_id hpd, bool enable)
-{
-	struct drm_device *dev = primary->base.dev;
-	struct radeon_device *rdev = dev->dev_private;
-	uint32_t reg;
-	int retries = 0;
-	uint32_t temp;
-
-	reg = RREG32(NI_DIG_BE_CNTL + primary->offset);
-
-	/* set MST mode */
-	reg &= ~NI_DIG_FE_DIG_MODE(7);
-	reg |= NI_DIG_FE_DIG_MODE(NI_DIG_MODE_DP_MST);
-
-	if (enable)
-		reg |= NI_DIG_FE_SOURCE_SELECT(1 << mst_enc->fe);
-	else
-		reg &= ~NI_DIG_FE_SOURCE_SELECT(1 << mst_enc->fe);
-
-	reg |= NI_DIG_HPD_SELECT(hpd);
-	DRM_DEBUG_KMS("writing 0x%08x 0x%08x\n", NI_DIG_BE_CNTL + primary->offset, reg);
-	WREG32(NI_DIG_BE_CNTL + primary->offset, reg);
-
-	if (enable) {
-		uint32_t offset = radeon_atom_set_enc_offset(mst_enc->fe);
-
-		do {
-			temp = RREG32(NI_DIG_FE_CNTL + offset);
-		} while ((temp & NI_DIG_SYMCLK_FE_ON) && retries++ < 10000);
-		if (retries == 10000)
-			DRM_ERROR("timed out waiting for FE %d %d\n", primary->offset, mst_enc->fe);
-	}
-	return 0;
-}
-
-static int radeon_dp_mst_set_stream_attrib(struct radeon_encoder *primary,
-					   int stream_number,
-					   int fe,
-					   int slots)
-{
-	struct drm_device *dev = primary->base.dev;
-	struct radeon_device *rdev = dev->dev_private;
-	u32 temp, val;
-	int retries  = 0;
-	int satreg, satidx;
-
-	satreg = stream_number >> 1;
-	satidx = stream_number & 1;
-
-	temp = RREG32(NI_DP_MSE_SAT0 + satreg + primary->offset);
-
-	val = NI_DP_MSE_SAT_SLOT_COUNT0(slots) | NI_DP_MSE_SAT_SRC0(fe);
-
-	val <<= (16 * satidx);
-
-	temp &= ~(0xffff << (16 * satidx));
-
-	temp |= val;
-
-	DRM_DEBUG_KMS("writing 0x%08x 0x%08x\n", NI_DP_MSE_SAT0 + satreg + primary->offset, temp);
-	WREG32(NI_DP_MSE_SAT0 + satreg + primary->offset, temp);
-
-	WREG32(NI_DP_MSE_SAT_UPDATE + primary->offset, 1);
-
-	do {
-		unsigned value1, value2;
-		udelay(10);
-		temp = RREG32(NI_DP_MSE_SAT_UPDATE + primary->offset);
-
-		value1 = temp & NI_DP_MSE_SAT_UPDATE_MASK;
-		value2 = temp & NI_DP_MSE_16_MTP_KEEPOUT;
-
-		if (!value1 && !value2)
-			break;
-	} while (retries++ < 50);
-
-	if (retries == 10000)
-		DRM_ERROR("timed out waitin for SAT update %d\n", primary->offset);
-
-	/* MTP 16 ? */
-	return 0;
-}
-
-static int radeon_dp_mst_update_stream_attribs(struct radeon_connector *mst_conn,
-					       struct radeon_encoder *primary)
-{
-	struct drm_device *dev = mst_conn->base.dev;
-	struct stream_attribs new_attribs[6];
-	int i;
-	int idx = 0;
-	struct radeon_connector *radeon_connector;
-	struct drm_connector *connector;
-
-	memset(new_attribs, 0, sizeof(new_attribs));
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		struct radeon_encoder *subenc;
-		struct radeon_encoder_mst *mst_enc;
-
-		radeon_connector = to_radeon_connector(connector);
-		if (!radeon_connector->is_mst_connector)
-			continue;
-
-		if (radeon_connector->mst_port != mst_conn)
-			continue;
-
-		subenc = radeon_connector->mst_encoder;
-		mst_enc = subenc->enc_priv;
-
-		if (!mst_enc->enc_active)
-			continue;
-
-		new_attribs[idx].fe = mst_enc->fe;
-		new_attribs[idx].slots = drm_dp_mst_get_vcpi_slots(&mst_conn->mst_mgr, mst_enc->port);
-		idx++;
-	}
-
-	for (i = 0; i < idx; i++) {
-		if (new_attribs[i].fe != mst_conn->cur_stream_attribs[i].fe ||
-		    new_attribs[i].slots != mst_conn->cur_stream_attribs[i].slots) {
-			radeon_dp_mst_set_stream_attrib(primary, i, new_attribs[i].fe, new_attribs[i].slots);
-			mst_conn->cur_stream_attribs[i].fe = new_attribs[i].fe;
-			mst_conn->cur_stream_attribs[i].slots = new_attribs[i].slots;
-		}
-	}
-
-	for (i = idx; i < mst_conn->enabled_attribs; i++) {
-		radeon_dp_mst_set_stream_attrib(primary, i, 0, 0);
-		mst_conn->cur_stream_attribs[i].fe = 0;
-		mst_conn->cur_stream_attribs[i].slots = 0;
-	}
-	mst_conn->enabled_attribs = idx;
-	return 0;
-}
-
-static int radeon_dp_mst_set_vcp_size(struct radeon_encoder *mst, s64 avg_time_slots_per_mtp)
-{
-	struct drm_device *dev = mst->base.dev;
-	struct radeon_device *rdev = dev->dev_private;
-	struct radeon_encoder_mst *mst_enc = mst->enc_priv;
-	uint32_t val, temp;
-	uint32_t offset = radeon_atom_set_enc_offset(mst_enc->fe);
-	int retries = 0;
-	uint32_t x = drm_fixp2int(avg_time_slots_per_mtp);
-	uint32_t y = drm_fixp2int_ceil((avg_time_slots_per_mtp - x) << 26);
-
-	val = NI_DP_MSE_RATE_X(x) | NI_DP_MSE_RATE_Y(y);
-
-	WREG32(NI_DP_MSE_RATE_CNTL + offset, val);
-
-	do {
-		temp = RREG32(NI_DP_MSE_RATE_UPDATE + offset);
-		udelay(10);
-	} while ((temp & 0x1) && (retries++ < 10000));
-
-	if (retries >= 10000)
-		DRM_ERROR("timed out wait for rate cntl %d\n", mst_enc->fe);
-	return 0;
-}
-
-static int radeon_dp_mst_get_ddc_modes(struct drm_connector *connector)
-{
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
-	struct radeon_connector *master = radeon_connector->mst_port;
-	struct edid *edid;
-	int ret = 0;
-
-	edid = drm_dp_mst_get_edid(connector, &master->mst_mgr, radeon_connector->port);
-	radeon_connector->edid = edid;
-	DRM_DEBUG_KMS("edid retrieved %p\n", edid);
-	if (radeon_connector->edid) {
-		drm_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid);
-		ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid);
-		return ret;
-	}
-	drm_connector_update_edid_property(&radeon_connector->base, NULL);
-
-	return ret;
-}
-
-static int radeon_dp_mst_get_modes(struct drm_connector *connector)
-{
-	return radeon_dp_mst_get_ddc_modes(connector);
-}
-
-static enum drm_mode_status
-radeon_dp_mst_mode_valid(struct drm_connector *connector,
-			struct drm_display_mode *mode)
-{
-	/* TODO - validate mode against available PBN for link */
-	if (mode->clock < 10000)
-		return MODE_CLOCK_LOW;
-
-	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
-		return MODE_H_ILLEGAL;
-
-	return MODE_OK;
-}
-
-static struct
-drm_encoder *radeon_mst_best_encoder(struct drm_connector *connector)
-{
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
-
-	return &radeon_connector->mst_encoder->base;
-}
-
-static int
-radeon_dp_mst_detect(struct drm_connector *connector,
-		     struct drm_modeset_acquire_ctx *ctx,
-		     bool force)
-{
-	struct radeon_connector *radeon_connector =
-		to_radeon_connector(connector);
-	struct radeon_connector *master = radeon_connector->mst_port;
-
-	if (drm_connector_is_unregistered(connector))
-		return connector_status_disconnected;
-
-	return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr,
-				      radeon_connector->port);
-}
-
-static const struct drm_connector_helper_funcs radeon_dp_mst_connector_helper_funcs = {
-	.get_modes = radeon_dp_mst_get_modes,
-	.mode_valid = radeon_dp_mst_mode_valid,
-	.best_encoder = radeon_mst_best_encoder,
-	.detect_ctx = radeon_dp_mst_detect,
-};
-
-static void
-radeon_dp_mst_connector_destroy(struct drm_connector *connector)
-{
-	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
-	struct radeon_encoder *radeon_encoder = radeon_connector->mst_encoder;
-
-	drm_encoder_cleanup(&radeon_encoder->base);
-	kfree(radeon_encoder);
-	drm_connector_cleanup(connector);
-	kfree(radeon_connector);
-}
-
-static const struct drm_connector_funcs radeon_dp_mst_connector_funcs = {
-	.dpms = drm_helper_connector_dpms,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.destroy = radeon_dp_mst_connector_destroy,
-};
-
-static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
-							 struct drm_dp_mst_port *port,
-							 const char *pathprop)
-{
-	struct radeon_connector *master = container_of(mgr, struct radeon_connector, mst_mgr);
-	struct drm_device *dev = master->base.dev;
-	struct radeon_connector *radeon_connector;
-	struct drm_connector *connector;
-
-	radeon_connector = kzalloc(sizeof(*radeon_connector), GFP_KERNEL);
-	if (!radeon_connector)
-		return NULL;
-
-	radeon_connector->is_mst_connector = true;
-	connector = &radeon_connector->base;
-	radeon_connector->port = port;
-	radeon_connector->mst_port = master;
-	DRM_DEBUG_KMS("\n");
-
-	drm_connector_init(dev, connector, &radeon_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort);
-	drm_connector_helper_add(connector, &radeon_dp_mst_connector_helper_funcs);
-	radeon_connector->mst_encoder = radeon_dp_create_fake_mst_encoder(master);
-
-	drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
-	drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
-	drm_connector_set_path_property(connector, pathprop);
-
-	return connector;
-}
-
-static const struct drm_dp_mst_topology_cbs mst_cbs = {
-	.add_connector = radeon_dp_add_mst_connector,
-};
-
-static struct
-radeon_connector *radeon_mst_find_connector(struct drm_encoder *encoder)
-{
-	struct drm_device *dev = encoder->dev;
-	struct drm_connector *connector;
-
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		struct radeon_connector *radeon_connector = to_radeon_connector(connector);
-		if (!connector->encoder)
-			continue;
-		if (!radeon_connector->is_mst_connector)
-			continue;
-
-		DRM_DEBUG_KMS("checking %p vs %p\n", connector->encoder, encoder);
-		if (connector->encoder == encoder)
-			return radeon_connector;
-	}
-	return NULL;
-}
-
-void radeon_dp_mst_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
-{
-	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
-	struct drm_device *dev = crtc->dev;
-	struct radeon_device *rdev = dev->dev_private;
-	struct radeon_encoder *radeon_encoder = to_radeon_encoder(radeon_crtc->encoder);
-	struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv;
-	struct radeon_connector *radeon_connector = radeon_mst_find_connector(&radeon_encoder->base);
-	int dp_clock;
-	struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv;
-
-	if (radeon_connector) {
-		radeon_connector->pixelclock_for_modeset = mode->clock;
-		if (radeon_connector->base.display_info.bpc)
-			radeon_crtc->bpc = radeon_connector->base.display_info.bpc;
-		else
-			radeon_crtc->bpc = 8;
-	}
-
-	DRM_DEBUG_KMS("dp_clock %p %d\n", dig_connector, dig_connector->dp_clock);
-	dp_clock = dig_connector->dp_clock;
-	radeon_crtc->ss_enabled =
-		radeon_atombios_get_asic_ss_info(rdev, &radeon_crtc->ss,
-						 ASIC_INTERNAL_SS_ON_DP,
-						 dp_clock);
-}
-
-static void
-radeon_mst_encoder_dpms(struct drm_encoder *encoder, int mode)
-{
-	struct drm_device *dev = encoder->dev;
-	struct radeon_device *rdev = dev->dev_private;
-	struct radeon_encoder *radeon_encoder, *primary;
-	struct radeon_encoder_mst *mst_enc;
-	struct radeon_encoder_atom_dig *dig_enc;
-	struct radeon_connector *radeon_connector;
-	struct drm_crtc *crtc;
-	struct radeon_crtc *radeon_crtc;
-	int slots;
-	s64 fixed_pbn, fixed_pbn_per_slot, avg_time_slots_per_mtp;
-	if (!ASIC_IS_DCE5(rdev)) {
-		DRM_ERROR("got mst dpms on non-DCE5\n");
-		return;
-	}
-
-	radeon_connector = radeon_mst_find_connector(encoder);
-	if (!radeon_connector)
-		return;
-
-	radeon_encoder = to_radeon_encoder(encoder);
-
-	mst_enc = radeon_encoder->enc_priv;
-
-	primary = mst_enc->primary;
-
-	dig_enc = primary->enc_priv;
-
-	crtc = encoder->crtc;
-	DRM_DEBUG_KMS("got connector %d\n", dig_enc->active_mst_links);
-
-	switch (mode) {
-	case DRM_MODE_DPMS_ON:
-		dig_enc->active_mst_links++;
-
-		radeon_crtc = to_radeon_crtc(crtc);
-
-		if (dig_enc->active_mst_links == 1) {
-			mst_enc->fe = dig_enc->dig_encoder;
-			mst_enc->fe_from_be = true;
-			atombios_set_mst_encoder_crtc_source(encoder, mst_enc->fe);
-
-			atombios_dig_encoder_setup(&primary->base, ATOM_ENCODER_CMD_SETUP, 0);
-			atombios_dig_transmitter_setup2(&primary->base, ATOM_TRANSMITTER_ACTION_ENABLE,
-							0, 0, dig_enc->dig_encoder);
-
-			if (radeon_dp_needs_link_train(mst_enc->connector) ||
-			    dig_enc->active_mst_links == 1) {
-				radeon_dp_link_train(&primary->base, &mst_enc->connector->base);
-			}
-
-		} else {
-			mst_enc->fe = radeon_atom_pick_dig_encoder(encoder, radeon_crtc->crtc_id);
-			if (mst_enc->fe == -1)
-				DRM_ERROR("failed to get frontend for dig encoder\n");
-			mst_enc->fe_from_be = false;
-			atombios_set_mst_encoder_crtc_source(encoder, mst_enc->fe);
-		}
-
-		DRM_DEBUG_KMS("dig encoder is %d %d %d\n", dig_enc->dig_encoder,
-			      dig_enc->linkb, radeon_crtc->crtc_id);
-
-		slots = drm_dp_find_vcpi_slots(&radeon_connector->mst_port->mst_mgr,
-					       mst_enc->pbn);
-		drm_dp_mst_allocate_vcpi(&radeon_connector->mst_port->mst_mgr,
-					 radeon_connector->port,
-					 mst_enc->pbn, slots);
-		drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr, 1);
-
-		radeon_dp_mst_set_be_cntl(primary, mst_enc,
-					  radeon_connector->mst_port->hpd.hpd, true);
-
-		mst_enc->enc_active = true;
-		radeon_dp_mst_update_stream_attribs(radeon_connector->mst_port, primary);
-
-		fixed_pbn = drm_int2fixp(mst_enc->pbn);
-		fixed_pbn_per_slot = drm_int2fixp(radeon_connector->mst_port->mst_mgr.pbn_div);
-		avg_time_slots_per_mtp = drm_fixp_div(fixed_pbn, fixed_pbn_per_slot);
-		radeon_dp_mst_set_vcp_size(radeon_encoder, avg_time_slots_per_mtp);
-
-		atombios_dig_encoder_setup2(&primary->base, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0,
-					    mst_enc->fe);
-		drm_dp_check_act_status(&radeon_connector->mst_port->mst_mgr);
-
-		drm_dp_update_payload_part2(&radeon_connector->mst_port->mst_mgr);
-
-		break;
-	case DRM_MODE_DPMS_STANDBY:
-	case DRM_MODE_DPMS_SUSPEND:
-	case DRM_MODE_DPMS_OFF:
-		DRM_ERROR("DPMS OFF %d\n", dig_enc->active_mst_links);
-
-		if (!mst_enc->enc_active)
-			return;
-
-		drm_dp_mst_reset_vcpi_slots(&radeon_connector->mst_port->mst_mgr, mst_enc->port);
-		drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr, 1);
-
-		drm_dp_check_act_status(&radeon_connector->mst_port->mst_mgr);
-		/* and this can also fail */
-		drm_dp_update_payload_part2(&radeon_connector->mst_port->mst_mgr);
-
-		drm_dp_mst_deallocate_vcpi(&radeon_connector->mst_port->mst_mgr, mst_enc->port);
-
-		mst_enc->enc_active = false;
-		radeon_dp_mst_update_stream_attribs(radeon_connector->mst_port, primary);
-
-		radeon_dp_mst_set_be_cntl(primary, mst_enc,
-					  radeon_connector->mst_port->hpd.hpd, false);
-		atombios_dig_encoder_setup2(&primary->base, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0,
-					    mst_enc->fe);
-
-		if (!mst_enc->fe_from_be)
-			radeon_atom_release_dig_encoder(rdev, mst_enc->fe);
-
-		mst_enc->fe_from_be = false;
-		dig_enc->active_mst_links--;
-		if (dig_enc->active_mst_links == 0) {
-			/* drop link */
-		}
-
-		break;
-	}
-
-}
-
-static bool radeon_mst_mode_fixup(struct drm_encoder *encoder,
-				   const struct drm_display_mode *mode,
-				   struct drm_display_mode *adjusted_mode)
-{
-	struct radeon_encoder_mst *mst_enc;
-	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
-	struct radeon_connector_atom_dig *dig_connector;
-	int bpp = 24;
-
-	mst_enc = radeon_encoder->enc_priv;
-
-	mst_enc->pbn = drm_dp_calc_pbn_mode(adjusted_mode->clock, bpp, false);
-
-	mst_enc->primary->active_device = mst_enc->primary->devices & mst_enc->connector->devices;
-	DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
-		      mst_enc->primary->active_device, mst_enc->primary->devices,
-		      mst_enc->connector->devices, mst_enc->primary->base.encoder_type);
-
-
-	drm_mode_set_crtcinfo(adjusted_mode, 0);
-	dig_connector = mst_enc->connector->con_priv;
-	dig_connector->dp_lane_count = drm_dp_max_lane_count(dig_connector->dpcd);
-	dig_connector->dp_clock = drm_dp_max_link_rate(dig_connector->dpcd);
-	DRM_DEBUG_KMS("dig clock %p %d %d\n", dig_connector,
-		      dig_connector->dp_lane_count, dig_connector->dp_clock);
-	return true;
-}
-
-static void radeon_mst_encoder_prepare(struct drm_encoder *encoder)
-{
-	struct radeon_connector *radeon_connector;
-	struct radeon_encoder *radeon_encoder, *primary;
-	struct radeon_encoder_mst *mst_enc;
-	struct radeon_encoder_atom_dig *dig_enc;
-
-	radeon_connector = radeon_mst_find_connector(encoder);
-	if (!radeon_connector) {
-		DRM_DEBUG_KMS("failed to find connector %p\n", encoder);
-		return;
-	}
-	radeon_encoder = to_radeon_encoder(encoder);
-
-	radeon_mst_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
-
-	mst_enc = radeon_encoder->enc_priv;
-
-	primary = mst_enc->primary;
-
-	dig_enc = primary->enc_priv;
-
-	mst_enc->port = radeon_connector->port;
-
-	if (dig_enc->dig_encoder == -1) {
-		dig_enc->dig_encoder = radeon_atom_pick_dig_encoder(&primary->base, -1);
-		primary->offset = radeon_atom_set_enc_offset(dig_enc->dig_encoder);
-		atombios_set_mst_encoder_crtc_source(encoder, dig_enc->dig_encoder);
-
-
-	}
-	DRM_DEBUG_KMS("%d %d\n", dig_enc->dig_encoder, primary->offset);
-}
-
-static void
-radeon_mst_encoder_mode_set(struct drm_encoder *encoder,
-			     struct drm_display_mode *mode,
-			     struct drm_display_mode *adjusted_mode)
-{
-	DRM_DEBUG_KMS("\n");
-}
-
-static void radeon_mst_encoder_commit(struct drm_encoder *encoder)
-{
-	radeon_mst_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
-	DRM_DEBUG_KMS("\n");
-}
-
-static const struct drm_encoder_helper_funcs radeon_mst_helper_funcs = {
-	.dpms = radeon_mst_encoder_dpms,
-	.mode_fixup = radeon_mst_mode_fixup,
-	.prepare = radeon_mst_encoder_prepare,
-	.mode_set = radeon_mst_encoder_mode_set,
-	.commit = radeon_mst_encoder_commit,
-};
-
-static void radeon_dp_mst_encoder_destroy(struct drm_encoder *encoder)
-{
-	drm_encoder_cleanup(encoder);
-	kfree(encoder);
-}
-
-static const struct drm_encoder_funcs radeon_dp_mst_enc_funcs = {
-	.destroy = radeon_dp_mst_encoder_destroy,
-};
-
-static struct radeon_encoder *
-radeon_dp_create_fake_mst_encoder(struct radeon_connector *connector)
-{
-	struct drm_device *dev = connector->base.dev;
-	struct radeon_device *rdev = dev->dev_private;
-	struct radeon_encoder *radeon_encoder;
-	struct radeon_encoder_mst *mst_enc;
-	struct drm_encoder *encoder;
-	const struct drm_connector_helper_funcs *connector_funcs = connector->base.helper_private;
-	struct drm_encoder *enc_master = connector_funcs->best_encoder(&connector->base);
-
-	DRM_DEBUG_KMS("enc master is %p\n", enc_master);
-	radeon_encoder = kzalloc(sizeof(*radeon_encoder), GFP_KERNEL);
-	if (!radeon_encoder)
-		return NULL;
-
-	radeon_encoder->enc_priv = kzalloc(sizeof(*mst_enc), GFP_KERNEL);
-	if (!radeon_encoder->enc_priv) {
-		kfree(radeon_encoder);
-		return NULL;
-	}
-	encoder = &radeon_encoder->base;
-	switch (rdev->num_crtc) {
-	case 1:
-		encoder->possible_crtcs = 0x1;
-		break;
-	case 2:
-	default:
-		encoder->possible_crtcs = 0x3;
-		break;
-	case 4:
-		encoder->possible_crtcs = 0xf;
-		break;
-	case 6:
-		encoder->possible_crtcs = 0x3f;
-		break;
-	}
-
-	drm_encoder_init(dev, &radeon_encoder->base, &radeon_dp_mst_enc_funcs,
-			 DRM_MODE_ENCODER_DPMST, NULL);
-	drm_encoder_helper_add(encoder, &radeon_mst_helper_funcs);
-
-	mst_enc = radeon_encoder->enc_priv;
-	mst_enc->connector = connector;
-	mst_enc->primary = to_radeon_encoder(enc_master);
-	radeon_encoder->is_mst_encoder = true;
-	return radeon_encoder;
-}
-
-int
-radeon_dp_mst_init(struct radeon_connector *radeon_connector)
-{
-	struct drm_device *dev = radeon_connector->base.dev;
-	int max_link_rate;
-
-	if (!radeon_connector->ddc_bus->has_aux)
-		return 0;
-
-	if (radeon_connector_is_dp12_capable(&radeon_connector->base))
-		max_link_rate = 0x14;
-	else
-		max_link_rate = 0x0a;
-
-	radeon_connector->mst_mgr.cbs = &mst_cbs;
-	return drm_dp_mst_topology_mgr_init(&radeon_connector->mst_mgr, dev,
-					    &radeon_connector->ddc_bus->aux, 16, 6,
-					    4, drm_dp_bw_code_to_link_rate(max_link_rate),
-					    radeon_connector->base.base.id);
-}
-
-int
-radeon_dp_mst_probe(struct radeon_connector *radeon_connector)
-{
-	struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
-	struct drm_device *dev = radeon_connector->base.dev;
-	struct radeon_device *rdev = dev->dev_private;
-	int ret;
-	u8 msg[1];
-
-	if (!radeon_mst)
-		return 0;
-
-	if (!ASIC_IS_DCE5(rdev))
-		return 0;
-
-	if (dig_connector->dpcd[DP_DPCD_REV] < 0x12)
-		return 0;
-
-	ret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_MSTM_CAP, msg,
-			       1);
-	if (ret) {
-		if (msg[0] & DP_MST_CAP) {
-			DRM_DEBUG_KMS("Sink is MST capable\n");
-			dig_connector->is_mst = true;
-		} else {
-			DRM_DEBUG_KMS("Sink is not MST capable\n");
-			dig_connector->is_mst = false;
-		}
-
-	}
-	drm_dp_mst_topology_mgr_set_mst(&radeon_connector->mst_mgr,
-					dig_connector->is_mst);
-	return dig_connector->is_mst;
-}
-
-int
-radeon_dp_mst_check_status(struct radeon_connector *radeon_connector)
-{
-	struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
-	int retry;
-
-	if (dig_connector->is_mst) {
-		u8 esi[16] = { 0 };
-		int dret;
-		int ret = 0;
-		bool handled;
-
-		dret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux,
-				       DP_SINK_COUNT_ESI, esi, 8);
-go_again:
-		if (dret == 8) {
-			DRM_DEBUG_KMS("got esi %3ph\n", esi);
-			ret = drm_dp_mst_hpd_irq(&radeon_connector->mst_mgr, esi, &handled);
-
-			if (handled) {
-				for (retry = 0; retry < 3; retry++) {
-					int wret;
-					wret = drm_dp_dpcd_write(&radeon_connector->ddc_bus->aux,
-								 DP_SINK_COUNT_ESI + 1, &esi[1], 3);
-					if (wret == 3)
-						break;
-				}
-
-				dret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux,
-							DP_SINK_COUNT_ESI, esi, 8);
-				if (dret == 8) {
-					DRM_DEBUG_KMS("got esi2 %3ph\n", esi);
-					goto go_again;
-				}
-			} else
-				ret = 0;
-
-			return ret;
-		} else {
-			DRM_DEBUG_KMS("failed to get ESI - device may have failed %d\n", ret);
-			dig_connector->is_mst = false;
-			drm_dp_mst_topology_mgr_set_mst(&radeon_connector->mst_mgr,
-							dig_connector->is_mst);
-			/* send a hotplug event */
-		}
-	}
-	return -EINVAL;
-}
-
-#if defined(CONFIG_DEBUG_FS)
-
-static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused)
-{
-	struct radeon_device *rdev = (struct radeon_device *)m->private;
-	struct drm_device *dev = rdev->ddev;
-	struct drm_connector *connector;
-	struct radeon_connector *radeon_connector;
-	struct radeon_connector_atom_dig *dig_connector;
-	int i;
-
-	drm_modeset_lock_all(dev);
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
-			continue;
-
-		radeon_connector = to_radeon_connector(connector);
-		dig_connector = radeon_connector->con_priv;
-		if (radeon_connector->is_mst_connector)
-			continue;
-		if (!dig_connector->is_mst)
-			continue;
-		drm_dp_mst_dump_topology(m, &radeon_connector->mst_mgr);
-
-		for (i = 0; i < radeon_connector->enabled_attribs; i++)
-			seq_printf(m, "attrib %d: %d %d\n", i,
-				   radeon_connector->cur_stream_attribs[i].fe,
-				   radeon_connector->cur_stream_attribs[i].slots);
-	}
-	drm_modeset_unlock_all(dev);
-	return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(radeon_debugfs_mst_info);
-#endif
-
-void radeon_mst_debugfs_init(struct radeon_device *rdev)
-{
-#if defined(CONFIG_DEBUG_FS)
-	struct dentry *root = rdev->ddev->primary->debugfs_root;
-
-	debugfs_create_file("radeon_mst_info", 0444, root, rdev,
-			    &radeon_debugfs_mst_info_fops);
-
-#endif
-}
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 956c72b5aa33..a28d5ceab628 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -172,7 +172,6 @@ int radeon_use_pflipirq = 2;
 int radeon_bapm = -1;
 int radeon_backlight = -1;
 int radeon_auxch = -1;
-int radeon_mst = 0;
 int radeon_uvd = 1;
 int radeon_vce = 1;
 
@@ -263,9 +262,6 @@ module_param_named(backlight, radeon_backlight, int, 0444);
 MODULE_PARM_DESC(auxch, "Use native auxch experimental support (1 = enable, 0 = disable, -1 = auto)");
 module_param_named(auxch, radeon_auxch, int, 0444);
 
-MODULE_PARM_DESC(mst, "DisplayPort MST experimental support (1 = enable, 0 = disable)");
-module_param_named(mst, radeon_mst, int, 0444);
-
 MODULE_PARM_DESC(uvd, "uvd enable/disable uvd support (1 = enable, 0 = disable)");
 module_param_named(uvd, radeon_uvd, int, 0444);
 
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 46549d5179ee..35c535e48b8d 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -244,16 +244,7 @@ radeon_get_connector_for_encoder(struct drm_encoder *encoder)
 
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		radeon_connector = to_radeon_connector(connector);
-		if (radeon_encoder->is_mst_encoder) {
-			struct radeon_encoder_mst *mst_enc;
-
-			if (!radeon_connector->is_mst_connector)
-				continue;
-
-			mst_enc = radeon_encoder->enc_priv;
-			if (mst_enc->connector == radeon_connector->mst_port)
-				return connector;
-		} else if (radeon_encoder->active_device & radeon_connector->devices)
+		if (radeon_encoder->active_device & radeon_connector->devices)
 			return connector;
 	}
 	return NULL;
@@ -399,9 +390,6 @@ bool radeon_dig_monitor_is_duallink(struct drm_encoder *encoder,
 	case DRM_MODE_CONNECTOR_DVID:
 	case DRM_MODE_CONNECTOR_HDMIA:
 	case DRM_MODE_CONNECTOR_DisplayPort:
-		if (radeon_connector->is_mst_connector)
-			return false;
-
 		dig_connector = radeon_connector->con_priv;
 		if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
 		    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 3907785d0798..da2173435edd 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -100,16 +100,8 @@ static void radeon_hotplug_work_func(struct work_struct *work)
 
 static void radeon_dp_work_func(struct work_struct *work)
 {
-	struct radeon_device *rdev = container_of(work, struct radeon_device,
-						  dp_work);
-	struct drm_device *dev = rdev->ddev;
-	struct drm_mode_config *mode_config = &dev->mode_config;
-	struct drm_connector *connector;
-
-	/* this should take a mutex */
-	list_for_each_entry(connector, &mode_config->connector_list, head)
-		radeon_connector_hotplug(connector);
 }
+
 /**
  * radeon_driver_irq_preinstall_kms - drm irq preinstall callback
  *
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 3485e7f142e9..fc98361bd7a3 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -31,7 +31,6 @@
 #define RADEON_MODE_H
 
 #include <drm/display/drm_dp_helper.h>
-#include <drm/display/drm_dp_mst_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_encoder.h>
@@ -440,24 +439,12 @@ struct radeon_encoder_atom_dig {
 	int panel_mode;
 	struct radeon_afmt *afmt;
 	struct r600_audio_pin *pin;
-	int active_mst_links;
 };
 
 struct radeon_encoder_atom_dac {
 	enum radeon_tv_std tv_std;
 };
 
-struct radeon_encoder_mst {
-	int crtc;
-	struct radeon_encoder *primary;
-	struct radeon_connector *connector;
-	struct drm_dp_mst_port *port;
-	int pbn;
-	int fe;
-	bool fe_from_be;
-	bool enc_active;
-};
-
 struct radeon_encoder {
 	struct drm_encoder base;
 	uint32_t encoder_enum;
@@ -479,8 +466,6 @@ struct radeon_encoder {
 	enum radeon_output_csc output_csc;
 	bool can_mst;
 	uint32_t offset;
-	bool is_mst_encoder;
-	/* front end for this mst encoder */
 };
 
 struct radeon_connector_atom_dig {
@@ -491,7 +476,6 @@ struct radeon_connector_atom_dig {
 	int dp_clock;
 	int dp_lane_count;
 	bool edp_on;
-	bool is_mst;
 };
 
 struct radeon_gpio_rec {
@@ -535,11 +519,6 @@ enum radeon_connector_dither {
 	RADEON_FMT_DITHER_ENABLE = 1,
 };
 
-struct stream_attribs {
-	uint16_t fe;
-	uint16_t slots;
-};
-
 struct radeon_connector {
 	struct drm_connector base;
 	uint32_t connector_id;
@@ -562,14 +541,6 @@ struct radeon_connector {
 	enum radeon_connector_audio audio;
 	enum radeon_connector_dither dither;
 	int pixelclock_for_modeset;
-	bool is_mst_connector;
-	struct radeon_connector *mst_port;
-	struct drm_dp_mst_port *port;
-	struct drm_dp_mst_topology_mgr mst_mgr;
-
-	struct radeon_encoder *mst_encoder;
-	struct stream_attribs cur_stream_attribs[6];
-	int enabled_attribs;
 };
 
 #define ENCODER_MODE_IS_DP(em) (((em) == ATOM_ENCODER_MODE_DP) || \
@@ -771,8 +742,6 @@ extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder,
 extern void atombios_dig_transmitter_setup2(struct drm_encoder *encoder,
 					    int action, uint8_t lane_num,
 					    uint8_t lane_set, int fe);
-extern void atombios_set_mst_encoder_crtc_source(struct drm_encoder *encoder,
-						 int fe);
 extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder);
 extern struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder);
 void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le);
@@ -990,15 +959,6 @@ void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id);
 
 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled);
 
-/* mst */
-int radeon_dp_mst_init(struct radeon_connector *radeon_connector);
-int radeon_dp_mst_probe(struct radeon_connector *radeon_connector);
-int radeon_dp_mst_check_status(struct radeon_connector *radeon_connector);
-void radeon_mst_debugfs_init(struct radeon_device *rdev);
-void radeon_dp_mst_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode);
-
-void radeon_setup_mst_connector(struct drm_device *dev);
-
 int radeon_atom_pick_dig_encoder(struct drm_encoder *encoder, int fe_idx);
 void radeon_atom_release_dig_encoder(struct radeon_device *rdev, int enc_idx);
 #endif
