drm/amd/dc: Add dc display driver (v2)

Supported DCE versions: 8.0, 10.0, 11.0, 11.2

v2: rebase against 4.11

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

11 files changed, 7380 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile b/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile
new file mode 100644
index 000000000000..698b1d4f83f5
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile
@@ -0,0 +1,17 @@
+#
+# Makefile for the 'dm' sub-component of DAL.
+# It provides the control and status of dm blocks.
+
+
+
+AMDGPUDM = amdgpu_dm_types.o amdgpu_dm.o amdgpu_dm_irq.o amdgpu_dm_mst_types.o
+
+ifneq ($(CONFIG_DRM_AMD_DC),)
+AMDGPUDM += amdgpu_dm_services.o amdgpu_dm_helpers.o
+endif
+
+subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/dc
+
+AMDGPU_DM = $(addprefix $(AMDDALPATH)/amdgpu_dm/,$(AMDGPUDM))
+
+AMD_DISPLAY_FILES += $(AMDGPU_DM)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
new file mode 100644
index 000000000000..ae4ba7777839
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -0,0 +1,1564 @@
+/*
+ * Copyright 2015 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
+ *
+ */
+
+#include "dm_services_types.h"
+#include "dc.h"
+
+#include "vid.h"
+#include "amdgpu.h"
+#include "atom.h"
+#include "amdgpu_dm.h"
+#include "amdgpu_dm_types.h"
+
+#include "amd_shared.h"
+#include "amdgpu_dm_irq.h"
+#include "dm_helpers.h"
+
+#include "ivsrcid/ivsrcid_vislands30.h"
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_dp_mst_helper.h>
+
+#include "modules/inc/mod_freesync.h"
+
+/* Debug facilities */
+#define AMDGPU_DM_NOT_IMPL(fmt, ...) \
+	DRM_INFO("DM_NOT_IMPL: " fmt, ##__VA_ARGS__)
+
+/*
+ * dm_vblank_get_counter
+ *
+ * @brief
+ * Get counter for number of vertical blanks
+ *
+ * @param
+ * struct amdgpu_device *adev - [in] desired amdgpu device
+ * int disp_idx - [in] which CRTC to get the counter from
+ *
+ * @return
+ * Counter for vertical blanks
+ */
+static u32 dm_vblank_get_counter(struct amdgpu_device *adev, int crtc)
+{
+	if (crtc >= adev->mode_info.num_crtc)
+		return 0;
+	else {
+		struct amdgpu_crtc *acrtc = adev->mode_info.crtcs[crtc];
+
+		if (NULL == acrtc->target) {
+			DRM_ERROR("dc_target is NULL for crtc '%d'!\n", crtc);
+			return 0;
+		}
+
+		return dc_target_get_vblank_counter(acrtc->target);
+	}
+}
+
+static int dm_crtc_get_scanoutpos(struct amdgpu_device *adev, int crtc,
+					u32 *vbl, u32 *position)
+{
+	if ((crtc < 0) || (crtc >= adev->mode_info.num_crtc))
+		return -EINVAL;
+	else {
+		struct amdgpu_crtc *acrtc = adev->mode_info.crtcs[crtc];
+
+		if (NULL == acrtc->target) {
+			DRM_ERROR("dc_target is NULL for crtc '%d'!\n", crtc);
+			return 0;
+		}
+
+		return dc_target_get_scanoutpos(acrtc->target, vbl, position);
+	}
+
+	return 0;
+}
+
+static bool dm_is_idle(void *handle)
+{
+	/* XXX todo */
+	return true;
+}
+
+static int dm_wait_for_idle(void *handle)
+{
+	/* XXX todo */
+	return 0;
+}
+
+static bool dm_check_soft_reset(void *handle)
+{
+	return false;
+}
+
+static int dm_soft_reset(void *handle)
+{
+	/* XXX todo */
+	return 0;
+}
+
+static struct amdgpu_crtc *get_crtc_by_otg_inst(
+	struct amdgpu_device *adev,
+	int otg_inst)
+{
+	struct drm_device *dev = adev->ddev;
+	struct drm_crtc *crtc;
+	struct amdgpu_crtc *amdgpu_crtc;
+
+	/*
+	 * following if is check inherited from both functions where this one is
+	 * used now. Need to be checked why it could happen.
+	 */
+	if (otg_inst == -1) {
+		WARN_ON(1);
+		return adev->mode_info.crtcs[0];
+	}
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+		amdgpu_crtc = to_amdgpu_crtc(crtc);
+
+		if (amdgpu_crtc->otg_inst == otg_inst)
+			return amdgpu_crtc;
+	}
+
+	return NULL;
+}
+
+static void dm_pflip_high_irq(void *interrupt_params)
+{
+	struct amdgpu_flip_work *works;
+	struct amdgpu_crtc *amdgpu_crtc;
+	struct common_irq_params *irq_params = interrupt_params;
+	struct amdgpu_device *adev = irq_params->adev;
+	unsigned long flags;
+
+	amdgpu_crtc = get_crtc_by_otg_inst(adev, irq_params->irq_src - IRQ_TYPE_PFLIP);
+
+	/* IRQ could occur when in initial stage */
+	/*TODO work and BO cleanup */
+	if (amdgpu_crtc == NULL) {
+		DRM_DEBUG_DRIVER("CRTC is null, returning.\n");
+		return;
+	}
+
+	spin_lock_irqsave(&adev->ddev->event_lock, flags);
+	works = amdgpu_crtc->pflip_works;
+
+	if (amdgpu_crtc->pflip_status != AMDGPU_FLIP_SUBMITTED){
+		DRM_DEBUG_DRIVER("amdgpu_crtc->pflip_status = %d !=AMDGPU_FLIP_SUBMITTED(%d) on crtc:%d[%p] \n",
+						 amdgpu_crtc->pflip_status,
+						 AMDGPU_FLIP_SUBMITTED,
+						 amdgpu_crtc->crtc_id,
+						 amdgpu_crtc);
+		spin_unlock_irqrestore(&adev->ddev->event_lock, flags);
+		return;
+	}
+
+	/* page flip completed. clean up */
+	amdgpu_crtc->pflip_status = AMDGPU_FLIP_NONE;
+	amdgpu_crtc->pflip_works = NULL;
+
+	/* wakeup usersapce */
+	if (works->event)
+		drm_crtc_send_vblank_event(&amdgpu_crtc->base,
+					   works->event);
+
+	spin_unlock_irqrestore(&adev->ddev->event_lock, flags);
+
+	DRM_DEBUG_DRIVER("%s - crtc :%d[%p], pflip_stat:AMDGPU_FLIP_NONE, work: %p,\n",
+					__func__, amdgpu_crtc->crtc_id, amdgpu_crtc, works);
+
+	drm_crtc_vblank_put(&amdgpu_crtc->base);
+	schedule_work(&works->unpin_work);
+}
+
+static void dm_crtc_high_irq(void *interrupt_params)
+{
+	struct common_irq_params *irq_params = interrupt_params;
+	struct amdgpu_device *adev = irq_params->adev;
+	uint8_t crtc_index = 0;
+	struct amdgpu_crtc *acrtc;
+
+	acrtc = get_crtc_by_otg_inst(adev, irq_params->irq_src - IRQ_TYPE_VUPDATE);
+
+	if (acrtc)
+		crtc_index = acrtc->crtc_id;
+
+	drm_handle_vblank(adev->ddev, crtc_index);
+}
+
+static int dm_set_clockgating_state(void *handle,
+		  enum amd_clockgating_state state)
+{
+	return 0;
+}
+
+static int dm_set_powergating_state(void *handle,
+		  enum amd_powergating_state state)
+{
+	return 0;
+}
+
+/* Prototypes of private functions */
+static int dm_early_init(void* handle);
+
+static void hotplug_notify_work_func(struct work_struct *work)
+{
+	struct amdgpu_display_manager *dm = container_of(work, struct amdgpu_display_manager, mst_hotplug_work);
+	struct drm_device *dev = dm->ddev;
+
+	drm_kms_helper_hotplug_event(dev);
+}
+
+/* Init display KMS
+ *
+ * Returns 0 on success
+ */
+int amdgpu_dm_init(struct amdgpu_device *adev)
+{
+	struct dc_init_data init_data;
+	adev->dm.ddev = adev->ddev;
+	adev->dm.adev = adev;
+
+	DRM_INFO("DAL is enabled\n");
+	/* Zero all the fields */
+	memset(&init_data, 0, sizeof(init_data));
+
+	/* initialize DAL's lock (for SYNC context use) */
+	spin_lock_init(&adev->dm.dal_lock);
+
+	/* initialize DAL's mutex */
+	mutex_init(&adev->dm.dal_mutex);
+
+	if(amdgpu_dm_irq_init(adev)) {
+		DRM_ERROR("amdgpu: failed to initialize DM IRQ support.\n");
+		goto error;
+	}
+
+	init_data.asic_id.chip_family = adev->family;
+
+	init_data.asic_id.pci_revision_id = adev->rev_id;
+	init_data.asic_id.hw_internal_rev = adev->external_rev_id;
+
+	init_data.asic_id.vram_width = adev->mc.vram_width;
+	/* TODO: initialize init_data.asic_id.vram_type here!!!! */
+	init_data.asic_id.atombios_base_address =
+		adev->mode_info.atom_context->bios;
+
+	init_data.driver = adev;
+
+	adev->dm.cgs_device = amdgpu_cgs_create_device(adev);
+
+	if (!adev->dm.cgs_device) {
+		DRM_ERROR("amdgpu: failed to create cgs device.\n");
+		goto error;
+	}
+
+	init_data.cgs_device = adev->dm.cgs_device;
+
+	adev->dm.dal = NULL;
+
+	init_data.dce_environment = DCE_ENV_PRODUCTION_DRV;
+
+	/* Display Core create. */
+	adev->dm.dc = dc_create(&init_data);
+
+	if (!adev->dm.dc)
+		DRM_INFO("Display Core failed to initialize!\n");
+
+	INIT_WORK(&adev->dm.mst_hotplug_work, hotplug_notify_work_func);
+
+	adev->dm.freesync_module = mod_freesync_create(adev->dm.dc);
+	if (!adev->dm.freesync_module) {
+		DRM_ERROR(
+		"amdgpu: failed to initialize freesync_module.\n");
+	} else
+		DRM_INFO("amdgpu: freesync_module init done %p.\n",
+				adev->dm.freesync_module);
+
+	if (amdgpu_dm_initialize_drm_device(adev)) {
+		DRM_ERROR(
+		"amdgpu: failed to initialize sw for display support.\n");
+		goto error;
+	}
+
+	/* Update the actual used number of crtc */
+	adev->mode_info.num_crtc = adev->dm.display_indexes_num;
+
+	/* TODO: Add_display_info? */
+
+	/* TODO use dynamic cursor width */
+	adev->ddev->mode_config.cursor_width = 128;
+	adev->ddev->mode_config.cursor_height = 128;
+
+	if (drm_vblank_init(adev->ddev, adev->dm.display_indexes_num)) {
+		DRM_ERROR(
+		"amdgpu: failed to initialize sw for display support.\n");
+		goto error;
+	}
+
+	DRM_INFO("KMS initialized.\n");
+
+	return 0;
+error:
+	amdgpu_dm_fini(adev);
+
+	return -1;
+}
+
+void amdgpu_dm_fini(struct amdgpu_device *adev)
+{
+	amdgpu_dm_destroy_drm_device(&adev->dm);
+	/*
+	 * TODO: pageflip, vlank interrupt
+	 *
+	 * amdgpu_dm_irq_fini(adev);
+	 */
+
+	if (adev->dm.cgs_device) {
+		amdgpu_cgs_destroy_device(adev->dm.cgs_device);
+		adev->dm.cgs_device = NULL;
+	}
+	if (adev->dm.freesync_module) {
+		mod_freesync_destroy(adev->dm.freesync_module);
+		adev->dm.freesync_module = NULL;
+	}
+	/* DC Destroy TODO: Replace destroy DAL */
+	{
+		dc_destroy(&adev->dm.dc);
+	}
+	return;
+}
+
+/* moved from amdgpu_dm_kms.c */
+void amdgpu_dm_destroy()
+{
+}
+
+static int dm_sw_init(void *handle)
+{
+	return 0;
+}
+
+static int dm_sw_fini(void *handle)
+{
+	return 0;
+}
+
+static void detect_link_for_all_connectors(struct drm_device *dev)
+{
+	struct amdgpu_connector *aconnector;
+	struct drm_connector *connector;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		   aconnector = to_amdgpu_connector(connector);
+		   if (aconnector->dc_link->type == dc_connection_mst_branch) {
+			   DRM_INFO("DM_MST: starting TM on aconnector: %p [id: %d]\n",
+						aconnector, aconnector->base.base.id);
+
+				if (drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true) < 0) {
+					DRM_ERROR("DM_MST: Failed to start MST\n");
+					((struct dc_link *)aconnector->dc_link)->type = dc_connection_single;
+				}
+		   }
+	}
+
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+}
+
+static void s3_handle_mst(struct drm_device *dev, bool suspend)
+{
+	struct amdgpu_connector *aconnector;
+	struct drm_connector *connector;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		   aconnector = to_amdgpu_connector(connector);
+		   if (aconnector->dc_link->type == dc_connection_mst_branch &&
+				   !aconnector->mst_port) {
+
+			   if (suspend)
+				   drm_dp_mst_topology_mgr_suspend(&aconnector->mst_mgr);
+			   else
+				   drm_dp_mst_topology_mgr_resume(&aconnector->mst_mgr);
+		   }
+	}
+
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+}
+
+static int dm_hw_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	/* Create DAL display manager */
+	amdgpu_dm_init(adev);
+
+	amdgpu_dm_hpd_init(adev);
+
+	detect_link_for_all_connectors(adev->ddev);
+
+	return 0;
+}
+
+static int dm_hw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	amdgpu_dm_hpd_fini(adev);
+
+	amdgpu_dm_irq_fini(adev);
+
+	return 0;
+}
+
+static int dm_suspend(void *handle)
+{
+	struct amdgpu_device *adev = handle;
+	struct amdgpu_display_manager *dm = &adev->dm;
+	int ret = 0;
+	struct drm_crtc *crtc;
+
+	s3_handle_mst(adev->ddev, true);
+
+	/* flash all pending vblank events and turn interrupt off
+	 * before disabling CRTCs. They will be enabled back in
+	 * dm_display_resume
+	 */
+	drm_modeset_lock_all(adev->ddev);
+	list_for_each_entry(crtc, &adev->ddev->mode_config.crtc_list, head) {
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+		if (acrtc->target)
+				drm_crtc_vblank_off(crtc);
+	}
+	drm_modeset_unlock_all(adev->ddev);
+
+	amdgpu_dm_irq_suspend(adev);
+
+	dc_set_power_state(
+		dm->dc,
+		DC_ACPI_CM_POWER_STATE_D3,
+		DC_VIDEO_POWER_SUSPEND);
+
+	return ret;
+}
+
+struct amdgpu_connector *amdgpu_dm_find_first_crct_matching_connector(
+	struct drm_atomic_state *state,
+	struct drm_crtc *crtc,
+	bool from_state_var)
+{
+	uint32_t i;
+	struct drm_connector_state *conn_state;
+	struct drm_connector *connector;
+	struct drm_crtc *crtc_from_state;
+
+	for_each_connector_in_state(
+		state,
+		connector,
+		conn_state,
+		i) {
+		crtc_from_state =
+			from_state_var ?
+				conn_state->crtc :
+				connector->state->crtc;
+
+		if (crtc_from_state == crtc)
+			return to_amdgpu_connector(connector);
+	}
+
+	return NULL;
+}
+
+static int dm_display_resume(struct drm_device *ddev)
+{
+	int ret = 0;
+	struct drm_connector *connector;
+
+	struct drm_atomic_state *state = drm_atomic_state_alloc(ddev);
+	struct drm_plane *plane;
+	struct drm_crtc *crtc;
+	struct amdgpu_connector *aconnector;
+	struct drm_connector_state *conn_state;
+
+	if (!state)
+		return ENOMEM;
+
+	state->acquire_ctx = ddev->mode_config.acquire_ctx;
+
+	/* Construct an atomic state to restore previous display setting */
+
+	/*
+	 * Attach connectors to drm_atomic_state
+	 * Should be done in the first place in order to make connectors
+	 * available in state during crtc state processing. It is used for
+	 * making decision if crtc should be disabled in case sink got
+	 * disconnected.
+	 *
+	 * Connectors state crtc with NULL dc_sink should be cleared, because it
+	 * will fail validation during commit
+	 */
+	list_for_each_entry(connector, &ddev->mode_config.connector_list, head) {
+		aconnector = to_amdgpu_connector(connector);
+		conn_state = drm_atomic_get_connector_state(state, connector);
+
+		ret = PTR_ERR_OR_ZERO(conn_state);
+		if (ret)
+			goto err;
+	}
+
+	/* Attach crtcs to drm_atomic_state*/
+	list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
+		struct drm_crtc_state *crtc_state =
+			drm_atomic_get_crtc_state(state, crtc);
+
+		ret = PTR_ERR_OR_ZERO(crtc_state);
+		if (ret)
+			goto err;
+
+		/* force a restore */
+		crtc_state->mode_changed = true;
+	}
+
+
+	/* Attach planes to drm_atomic_state */
+	list_for_each_entry(plane, &ddev->mode_config.plane_list, head) {
+
+		struct drm_crtc *crtc;
+		struct drm_gem_object *obj;
+		struct drm_framebuffer *fb;
+		struct amdgpu_framebuffer *afb;
+		struct amdgpu_bo *rbo;
+		int r;
+		struct drm_plane_state *plane_state = drm_atomic_get_plane_state(state, plane);
+
+		ret = PTR_ERR_OR_ZERO(plane_state);
+		if (ret)
+			goto err;
+
+		crtc = plane_state->crtc;
+		fb = plane_state->fb;
+
+		if (!crtc || !crtc->state || !crtc->state->active)
+			continue;
+
+		if (!fb) {
+			DRM_DEBUG_KMS("No FB bound\n");
+			return 0;
+		}
+
+		/*
+		 * Pin back the front buffers, cursor buffer was already pinned
+		 * back in amdgpu_resume_kms
+		 */
+
+		afb = to_amdgpu_framebuffer(fb);
+
+		obj = afb->obj;
+		rbo = gem_to_amdgpu_bo(obj);
+		r = amdgpu_bo_reserve(rbo, false);
+		if (unlikely(r != 0))
+		       return r;
+
+		r = amdgpu_bo_pin(rbo, AMDGPU_GEM_DOMAIN_VRAM, NULL);
+
+		amdgpu_bo_unreserve(rbo);
+
+		if (unlikely(r != 0)) {
+			DRM_ERROR("Failed to pin framebuffer\n");
+			return r;
+		}
+
+	}
+
+
+	/* Call commit internally with the state we just constructed */
+	ret = drm_atomic_commit(state);
+	if (!ret)
+		return 0;
+
+err:
+	DRM_ERROR("Restoring old state failed with %i\n", ret);
+	drm_atomic_state_put(state);
+
+	return ret;
+}
+
+static int dm_resume(void *handle)
+{
+	struct amdgpu_device *adev = handle;
+	struct amdgpu_display_manager *dm = &adev->dm;
+
+	/* power on hardware */
+	dc_set_power_state(
+		dm->dc,
+		DC_ACPI_CM_POWER_STATE_D0,
+		DC_VIDEO_POWER_ON);
+
+	return 0;
+}
+
+int amdgpu_dm_display_resume(struct amdgpu_device *adev )
+{
+	struct drm_device *ddev = adev->ddev;
+	struct amdgpu_display_manager *dm = &adev->dm;
+	struct amdgpu_connector *aconnector;
+	struct drm_connector *connector;
+	int ret = 0;
+	struct drm_crtc *crtc;
+
+	/* program HPD filter */
+	dc_resume(dm->dc);
+
+	/* On resume we need to  rewrite the MSTM control bits to enamble MST*/
+	s3_handle_mst(ddev, false);
+
+	/*
+	 * early enable HPD Rx IRQ, should be done before set mode as short
+	 * pulse interrupts are used for MST
+	 */
+	amdgpu_dm_irq_resume_early(adev);
+
+	drm_modeset_lock_all(ddev);
+	list_for_each_entry(crtc, &ddev->mode_config.crtc_list, head) {
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+		if (acrtc->target)
+				drm_crtc_vblank_on(crtc);
+	}
+	drm_modeset_unlock_all(ddev);
+
+	/* Do detection*/
+	list_for_each_entry(connector,
+			&ddev->mode_config.connector_list, head) {
+		aconnector = to_amdgpu_connector(connector);
+
+		/*
+		 * this is the case when traversing through already created
+		 * MST connectors, should be skipped
+		 */
+		if (aconnector->mst_port)
+			continue;
+
+		dc_link_detect(aconnector->dc_link, false);
+		aconnector->dc_sink = NULL;
+		amdgpu_dm_update_connector_after_detect(aconnector);
+	}
+
+	drm_modeset_lock_all(ddev);
+	ret = dm_display_resume(ddev);
+	drm_modeset_unlock_all(ddev);
+
+	amdgpu_dm_irq_resume(adev);
+
+	return ret;
+}
+
+static const struct amd_ip_funcs amdgpu_dm_funcs = {
+	.name = "dm",
+	.early_init = dm_early_init,
+	.late_init = NULL,
+	.sw_init = dm_sw_init,
+	.sw_fini = dm_sw_fini,
+	.hw_init = dm_hw_init,
+	.hw_fini = dm_hw_fini,
+	.suspend = dm_suspend,
+	.resume = dm_resume,
+	.is_idle = dm_is_idle,
+	.wait_for_idle = dm_wait_for_idle,
+	.check_soft_reset = dm_check_soft_reset,
+	.soft_reset = dm_soft_reset,
+	.set_clockgating_state = dm_set_clockgating_state,
+	.set_powergating_state = dm_set_powergating_state,
+};
+
+const struct amdgpu_ip_block_version dm_ip_block =
+{
+	.type = AMD_IP_BLOCK_TYPE_DCE,
+	.major = 1,
+	.minor = 0,
+	.rev = 0,
+	.funcs = &amdgpu_dm_funcs,
+};
+
+/* TODO: it is temporary non-const, should fixed later */
+static struct drm_mode_config_funcs amdgpu_dm_mode_funcs = {
+	.atomic_check = amdgpu_dm_atomic_check,
+	.atomic_commit = amdgpu_dm_atomic_commit
+};
+
+void amdgpu_dm_update_connector_after_detect(
+	struct amdgpu_connector *aconnector)
+{
+	struct drm_connector *connector = &aconnector->base;
+	struct drm_device *dev = connector->dev;
+	const struct dc_sink *sink;
+
+	/* MST handled by drm_mst framework */
+	if (aconnector->mst_mgr.mst_state == true)
+		return;
+
+
+	sink = aconnector->dc_link->local_sink;
+
+	/* Edid mgmt connector gets first update only in mode_valid hook and then
+	 * the connector sink is set to either fake or physical sink depends on link status.
+	 * don't do it here if u are during boot
+	 */
+	if (aconnector->base.force != DRM_FORCE_UNSPECIFIED
+			&& aconnector->dc_em_sink) {
+
+		/* For S3 resume with headless use eml_sink to fake target
+		 * because on resume connecotr->sink is set ti NULL
+		 */
+		mutex_lock(&dev->mode_config.mutex);
+
+		if (sink) {
+			if (aconnector->dc_sink)
+				amdgpu_dm_remove_sink_from_freesync_module(
+								connector);
+			aconnector->dc_sink = sink;
+			amdgpu_dm_add_sink_to_freesync_module(
+						connector, aconnector->edid);
+		} else {
+			amdgpu_dm_remove_sink_from_freesync_module(connector);
+			if (!aconnector->dc_sink)
+				aconnector->dc_sink = aconnector->dc_em_sink;
+		}
+
+		mutex_unlock(&dev->mode_config.mutex);
+		return;
+	}
+
+	/*
+	 * TODO: temporary guard to look for proper fix
+	 * if this sink is MST sink, we should not do anything
+	 */
+	if (sink && sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
+		return;
+
+	if (aconnector->dc_sink == sink) {
+		/* We got a DP short pulse (Link Loss, DP CTS, etc...).
+		 * Do nothing!! */
+		DRM_INFO("DCHPD: connector_id=%d: dc_sink didn't change.\n",
+				aconnector->connector_id);
+		return;
+	}
+
+	DRM_INFO("DCHPD: connector_id=%d: Old sink=%p New sink=%p\n",
+		aconnector->connector_id, aconnector->dc_sink, sink);
+
+	mutex_lock(&dev->mode_config.mutex);
+
+	/* 1. Update status of the drm connector
+	 * 2. Send an event and let userspace tell us what to do */
+	if (sink) {
+		/* TODO: check if we still need the S3 mode update workaround.
+		 * If yes, put it here. */
+		if (aconnector->dc_sink)
+			amdgpu_dm_remove_sink_from_freesync_module(
+							connector);
+
+		aconnector->dc_sink = sink;
+		if (sink->dc_edid.length == 0)
+			aconnector->edid = NULL;
+		else {
+			aconnector->edid =
+				(struct edid *) sink->dc_edid.raw_edid;
+
+
+			drm_mode_connector_update_edid_property(connector,
+					aconnector->edid);
+		}
+		amdgpu_dm_add_sink_to_freesync_module(connector, aconnector->edid);
+
+	} else {
+		amdgpu_dm_remove_sink_from_freesync_module(connector);
+		drm_mode_connector_update_edid_property(connector, NULL);
+		aconnector->num_modes = 0;
+		aconnector->dc_sink = NULL;
+	}
+
+	mutex_unlock(&dev->mode_config.mutex);
+}
+
+static void handle_hpd_irq(void *param)
+{
+	struct amdgpu_connector *aconnector = (struct amdgpu_connector *)param;
+	struct drm_connector *connector = &aconnector->base;
+	struct drm_device *dev = connector->dev;
+
+	/* In case of failure or MST no need to update connector status or notify the OS
+	 * since (for MST case) MST does this in it's own context.
+	 */
+	mutex_lock(&aconnector->hpd_lock);
+	if (dc_link_detect(aconnector->dc_link, false)) {
+		amdgpu_dm_update_connector_after_detect(aconnector);
+
+
+		drm_modeset_lock_all(dev);
+		dm_restore_drm_connector_state(dev, connector);
+		drm_modeset_unlock_all(dev);
+
+		if (aconnector->base.force == DRM_FORCE_UNSPECIFIED)
+			drm_kms_helper_hotplug_event(dev);
+	}
+	mutex_unlock(&aconnector->hpd_lock);
+
+}
+
+static void dm_handle_hpd_rx_irq(struct amdgpu_connector *aconnector)
+{
+	uint8_t esi[DP_PSR_ERROR_STATUS - DP_SINK_COUNT_ESI] = { 0 };
+	uint8_t dret;
+	bool new_irq_handled = false;
+	int dpcd_addr;
+	int dpcd_bytes_to_read;
+
+	const int max_process_count = 30;
+	int process_count = 0;
+
+	const struct dc_link_status *link_status = dc_link_get_status(aconnector->dc_link);
+
+	if (link_status->dpcd_caps->dpcd_rev.raw < 0x12) {
+		dpcd_bytes_to_read = DP_LANE0_1_STATUS - DP_SINK_COUNT;
+		/* DPCD 0x200 - 0x201 for downstream IRQ */
+		dpcd_addr = DP_SINK_COUNT;
+	} else {
+		dpcd_bytes_to_read = DP_PSR_ERROR_STATUS - DP_SINK_COUNT_ESI;
+		/* DPCD 0x2002 - 0x2005 for downstream IRQ */
+		dpcd_addr = DP_SINK_COUNT_ESI;
+	}
+
+	dret = drm_dp_dpcd_read(
+		&aconnector->dm_dp_aux.aux,
+		dpcd_addr,
+		esi,
+		dpcd_bytes_to_read);
+
+	while (dret == dpcd_bytes_to_read &&
+		process_count < max_process_count) {
+		uint8_t retry;
+		dret = 0;
+
+		process_count++;
+
+		DRM_DEBUG_KMS("ESI %02x %02x %02x\n", esi[0], esi[1], esi[2]);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 3, 0)
+		/* handle HPD short pulse irq */
+		if (aconnector->mst_mgr.mst_state)
+			drm_dp_mst_hpd_irq(
+				&aconnector->mst_mgr,
+				esi,
+				&new_irq_handled);
+#endif
+
+		if (new_irq_handled) {
+			/* ACK at DPCD to notify down stream */
+			const int ack_dpcd_bytes_to_write =
+				dpcd_bytes_to_read - 1;
+
+			for (retry = 0; retry < 3; retry++) {
+				uint8_t wret;
+
+				wret = drm_dp_dpcd_write(
+					&aconnector->dm_dp_aux.aux,
+					dpcd_addr + 1,
+					&esi[1],
+					ack_dpcd_bytes_to_write);
+				if (wret == ack_dpcd_bytes_to_write)
+					break;
+			}
+
+			/* check if there is new irq to be handle */
+			dret = drm_dp_dpcd_read(
+				&aconnector->dm_dp_aux.aux,
+				dpcd_addr,
+				esi,
+				dpcd_bytes_to_read);
+
+			new_irq_handled = false;
+		} else
+			break;
+	}
+
+	if (process_count == max_process_count)
+		DRM_DEBUG_KMS("Loop exceeded max iterations\n");
+}
+
+static void handle_hpd_rx_irq(void *param)
+{
+	struct amdgpu_connector *aconnector = (struct amdgpu_connector *)param;
+	struct drm_connector *connector = &aconnector->base;
+	struct drm_device *dev = connector->dev;
+	const struct dc_link *dc_link = aconnector->dc_link;
+	bool is_mst_root_connector = aconnector->mst_mgr.mst_state;
+
+	/* TODO:Temporary add mutex to protect hpd interrupt not have a gpio
+	 * conflict, after implement i2c helper, this mutex should be
+	 * retired.
+	 */
+	if (aconnector->dc_link->type != dc_connection_mst_branch)
+		mutex_lock(&aconnector->hpd_lock);
+
+	if (dc_link_handle_hpd_rx_irq(aconnector->dc_link) &&
+			!is_mst_root_connector) {
+		/* Downstream Port status changed. */
+		if (dc_link_detect(aconnector->dc_link, false)) {
+			amdgpu_dm_update_connector_after_detect(aconnector);
+
+
+			drm_modeset_lock_all(dev);
+			dm_restore_drm_connector_state(dev, connector);
+			drm_modeset_unlock_all(dev);
+
+			drm_kms_helper_hotplug_event(dev);
+		}
+	}
+	if ((dc_link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||
+				(dc_link->type == dc_connection_mst_branch))
+		dm_handle_hpd_rx_irq(aconnector);
+
+	if (aconnector->dc_link->type != dc_connection_mst_branch)
+		mutex_unlock(&aconnector->hpd_lock);
+}
+
+static void register_hpd_handlers(struct amdgpu_device *adev)
+{
+	struct drm_device *dev = adev->ddev;
+	struct drm_connector *connector;
+	struct amdgpu_connector *aconnector;
+	const struct dc_link *dc_link;
+	struct dc_interrupt_params int_params = {0};
+
+	int_params.requested_polarity = INTERRUPT_POLARITY_DEFAULT;
+	int_params.current_polarity = INTERRUPT_POLARITY_DEFAULT;
+
+	list_for_each_entry(connector,
+			&dev->mode_config.connector_list, head)	{
+
+		aconnector = to_amdgpu_connector(connector);
+		dc_link = aconnector->dc_link;
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd) {
+			int_params.int_context = INTERRUPT_LOW_IRQ_CONTEXT;
+			int_params.irq_source = dc_link->irq_source_hpd;
+
+			amdgpu_dm_irq_register_interrupt(adev, &int_params,
+					handle_hpd_irq,
+					(void *) aconnector);
+		}
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd_rx) {
+
+			/* Also register for DP short pulse (hpd_rx). */
+			int_params.int_context = INTERRUPT_LOW_IRQ_CONTEXT;
+			int_params.irq_source =	dc_link->irq_source_hpd_rx;
+
+			amdgpu_dm_irq_register_interrupt(adev, &int_params,
+					handle_hpd_rx_irq,
+					(void *) aconnector);
+		}
+	}
+}
+
+/* Register IRQ sources and initialize IRQ callbacks */
+static int dce110_register_irq_handlers(struct amdgpu_device *adev)
+{
+	struct dc *dc = adev->dm.dc;
+	struct common_irq_params *c_irq_params;
+	struct dc_interrupt_params int_params = {0};
+	int r;
+	int i;
+
+	int_params.requested_polarity = INTERRUPT_POLARITY_DEFAULT;
+	int_params.current_polarity = INTERRUPT_POLARITY_DEFAULT;
+
+	/* Actions of amdgpu_irq_add_id():
+	 * 1. Register a set() function with base driver.
+	 *    Base driver will call set() function to enable/disable an
+	 *    interrupt in DC hardware.
+	 * 2. Register amdgpu_dm_irq_handler().
+	 *    Base driver will call amdgpu_dm_irq_handler() for ALL interrupts
+	 *    coming from DC hardware.
+	 *    amdgpu_dm_irq_handler() will re-direct the interrupt to DC
+	 *    for acknowledging and handling. */
+
+	for (i = VISLANDS30_IV_SRCID_D1_V_UPDATE_INT;
+			i <= VISLANDS30_IV_SRCID_D6_V_UPDATE_INT; i += 2) {
+		r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, i, &adev->crtc_irq);
+		if (r) {
+			DRM_ERROR("Failed to add crtc irq id!\n");
+			return r;
+		}
+
+		int_params.int_context = INTERRUPT_HIGH_IRQ_CONTEXT;
+		int_params.irq_source =
+			dc_interrupt_to_irq_source(dc, i, 0);
+
+		c_irq_params = &adev->dm.vupdate_params[int_params.irq_source - DC_IRQ_SOURCE_VUPDATE1];
+
+		c_irq_params->adev = adev;
+		c_irq_params->irq_src = int_params.irq_source;
+
+		amdgpu_dm_irq_register_interrupt(adev, &int_params,
+				dm_crtc_high_irq, c_irq_params);
+	}
+
+	for (i = VISLANDS30_IV_SRCID_D1_GRPH_PFLIP;
+			i <= VISLANDS30_IV_SRCID_D6_GRPH_PFLIP; i += 2) {
+		r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, i, &adev->pageflip_irq);
+		if (r) {
+			DRM_ERROR("Failed to add page flip irq id!\n");
+			return r;
+		}
+
+		int_params.int_context = INTERRUPT_HIGH_IRQ_CONTEXT;
+		int_params.irq_source =
+			dc_interrupt_to_irq_source(dc, i, 0);
+
+		c_irq_params = &adev->dm.pflip_params[int_params.irq_source - DC_IRQ_SOURCE_PFLIP_FIRST];
+
+		c_irq_params->adev = adev;
+		c_irq_params->irq_src = int_params.irq_source;
+
+		amdgpu_dm_irq_register_interrupt(adev, &int_params,
+				dm_pflip_high_irq, c_irq_params);
+
+	}
+
+	/* HPD */
+	r = amdgpu_irq_add_id(adev, AMDGPU_IH_CLIENTID_LEGACY, VISLANDS30_IV_SRCID_HOTPLUG_DETECT_A,
+			&adev->hpd_irq);
+	if (r) {
+		DRM_ERROR("Failed to add hpd irq id!\n");
+		return r;
+	}
+
+	register_hpd_handlers(adev);
+
+	return 0;
+}
+
+static int amdgpu_dm_mode_config_init(struct amdgpu_device *adev)
+{
+	int r;
+
+	adev->mode_info.mode_config_initialized = true;
+
+	amdgpu_dm_mode_funcs.fb_create =
+		amdgpu_mode_funcs.fb_create;
+	amdgpu_dm_mode_funcs.output_poll_changed =
+		amdgpu_mode_funcs.output_poll_changed;
+
+	adev->ddev->mode_config.funcs = (void *)&amdgpu_dm_mode_funcs;
+
+	adev->ddev->mode_config.max_width = 16384;
+	adev->ddev->mode_config.max_height = 16384;
+
+	adev->ddev->mode_config.preferred_depth = 24;
+	adev->ddev->mode_config.prefer_shadow = 1;
+	/* indicate support of immediate flip */
+	adev->ddev->mode_config.async_page_flip = true;
+
+	adev->ddev->mode_config.fb_base = adev->mc.aper_base;
+
+	r = amdgpu_modeset_create_props(adev);
+	if (r)
+		return r;
+
+	return 0;
+}
+
+#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) ||\
+	defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+
+static int amdgpu_dm_backlight_update_status(struct backlight_device *bd)
+{
+	struct amdgpu_display_manager *dm = bl_get_data(bd);
+
+	if (dc_link_set_backlight_level(dm->backlight_link,
+			bd->props.brightness, 0, 0))
+		return 0;
+	else
+		return 1;
+}
+
+static int amdgpu_dm_backlight_get_brightness(struct backlight_device *bd)
+{
+	return bd->props.brightness;
+}
+
+static const struct backlight_ops amdgpu_dm_backlight_ops = {
+	.get_brightness = amdgpu_dm_backlight_get_brightness,
+	.update_status	= amdgpu_dm_backlight_update_status,
+};
+
+void amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm)
+{
+	char bl_name[16];
+	struct backlight_properties props = { 0 };
+
+	props.max_brightness = AMDGPU_MAX_BL_LEVEL;
+	props.type = BACKLIGHT_RAW;
+
+	snprintf(bl_name, sizeof(bl_name), "amdgpu_bl%d",
+			dm->adev->ddev->primary->index);
+
+	dm->backlight_dev = backlight_device_register(bl_name,
+			dm->adev->ddev->dev,
+			dm,
+			&amdgpu_dm_backlight_ops,
+			&props);
+
+	if (NULL == dm->backlight_dev)
+		DRM_ERROR("DM: Backlight registration failed!\n");
+	else
+		DRM_INFO("DM: Registered Backlight device: %s\n", bl_name);
+}
+
+#endif
+
+/* In this architecture, the association
+ * connector -> encoder -> crtc
+ * id not really requried. The crtc and connector will hold the
+ * display_index as an abstraction to use with DAL component
+ *
+ * Returns 0 on success
+ */
+int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
+{
+	struct amdgpu_display_manager *dm = &adev->dm;
+	uint32_t i;
+	struct amdgpu_connector *aconnector;
+	struct amdgpu_encoder *aencoder;
+	struct amdgpu_crtc *acrtc;
+	uint32_t link_cnt;
+
+	link_cnt = dm->dc->caps.max_links;
+
+	if (amdgpu_dm_mode_config_init(dm->adev)) {
+		DRM_ERROR("DM: Failed to initialize mode config\n");
+		return -1;
+	}
+
+	for (i = 0; i < dm->dc->caps.max_targets; i++) {
+		acrtc = kzalloc(sizeof(struct amdgpu_crtc), GFP_KERNEL);
+		if (!acrtc)
+			goto fail;
+
+		if (amdgpu_dm_crtc_init(
+			dm,
+			acrtc,
+			i)) {
+			DRM_ERROR("KMS: Failed to initialize crtc\n");
+			kfree(acrtc);
+			goto fail;
+		}
+	}
+
+	dm->display_indexes_num = dm->dc->caps.max_targets;
+
+	/* loops over all connectors on the board */
+	for (i = 0; i < link_cnt; i++) {
+
+		if (i > AMDGPU_DM_MAX_DISPLAY_INDEX) {
+			DRM_ERROR(
+				"KMS: Cannot support more than %d display indexes\n",
+					AMDGPU_DM_MAX_DISPLAY_INDEX);
+			continue;
+		}
+
+		aconnector = kzalloc(sizeof(*aconnector), GFP_KERNEL);
+		if (!aconnector)
+			goto fail;
+
+		aencoder = kzalloc(sizeof(*aencoder), GFP_KERNEL);
+		if (!aencoder) {
+			goto fail_free_connector;
+		}
+
+		if (amdgpu_dm_encoder_init(dm->ddev, aencoder, i)) {
+			DRM_ERROR("KMS: Failed to initialize encoder\n");
+			goto fail_free_encoder;
+		}
+
+		if (amdgpu_dm_connector_init(dm, aconnector, i, aencoder)) {
+			DRM_ERROR("KMS: Failed to initialize connector\n");
+			goto fail_free_connector;
+		}
+
+		if (dc_link_detect(dc_get_link_at_index(dm->dc, i), true))
+			amdgpu_dm_update_connector_after_detect(aconnector);
+	}
+
+	/* Software is initialized. Now we can register interrupt handlers. */
+	switch (adev->asic_type) {
+	case CHIP_BONAIRE:
+	case CHIP_HAWAII:
+	case CHIP_TONGA:
+	case CHIP_FIJI:
+	case CHIP_CARRIZO:
+	case CHIP_STONEY:
+	case CHIP_POLARIS11:
+	case CHIP_POLARIS10:
+		if (dce110_register_irq_handlers(dm->adev)) {
+			DRM_ERROR("DM: Failed to initialize IRQ\n");
+			return -1;
+		}
+		break;
+	default:
+		DRM_ERROR("Usupported ASIC type: 0x%X\n", adev->asic_type);
+		return -1;
+	}
+
+	drm_mode_config_reset(dm->ddev);
+
+	return 0;
+fail_free_encoder:
+	kfree(aencoder);
+fail_free_connector:
+	kfree(aconnector);
+fail:
+	return -1;
+}
+
+void amdgpu_dm_destroy_drm_device(struct amdgpu_display_manager *dm)
+{
+	drm_mode_config_cleanup(dm->ddev);
+	return;
+}
+
+/******************************************************************************
+ * amdgpu_display_funcs functions
+ *****************************************************************************/
+
+/**
+ * dm_bandwidth_update - program display watermarks
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Calculate and program the display watermarks and line buffer allocation.
+ */
+static void dm_bandwidth_update(struct amdgpu_device *adev)
+{
+	AMDGPU_DM_NOT_IMPL("%s\n", __func__);
+}
+
+static void dm_set_backlight_level(struct amdgpu_encoder *amdgpu_encoder,
+				     u8 level)
+{
+	/* TODO: translate amdgpu_encoder to display_index and call DAL */
+	AMDGPU_DM_NOT_IMPL("%s\n", __func__);
+}
+
+static u8 dm_get_backlight_level(struct amdgpu_encoder *amdgpu_encoder)
+{
+	/* TODO: translate amdgpu_encoder to display_index and call DAL */
+	AMDGPU_DM_NOT_IMPL("%s\n", __func__);
+	return 0;
+}
+
+/******************************************************************************
+ * Page Flip functions
+ ******************************************************************************/
+
+/**
+ * dm_page_flip - called by amdgpu_flip_work_func(), which is triggered
+ * 			via DRM IOCTL, by user mode.
+ *
+ * @adev: amdgpu_device pointer
+ * @crtc_id: crtc to cleanup pageflip on
+ * @crtc_base: new address of the crtc (GPU MC address)
+ *
+ * Does the actual pageflip (surface address update).
+ */
+static void dm_page_flip(struct amdgpu_device *adev,
+			 int crtc_id, u64 crtc_base, bool async)
+{
+	struct amdgpu_crtc *acrtc;
+	struct dc_target *target;
+	struct dc_flip_addrs addr = { {0} };
+
+	/*
+	 * TODO risk of concurrency issues
+	 *
+	 * This should guarded by the dal_mutex but we can't do this since the
+	 * caller uses a spin_lock on event_lock.
+	 *
+	 * If we wait on the dal_mutex a second page flip interrupt might come,
+	 * spin on the event_lock, disabling interrupts while it does so. At
+	 * this point the core can no longer be pre-empted and return to the
+	 * thread that waited on the dal_mutex and we're deadlocked.
+	 *
+	 * With multiple cores the same essentially happens but might just take
+	 * a little longer to lock up all cores.
+	 *
+	 * The reason we should lock on dal_mutex is so that we can be sure
+	 * nobody messes with acrtc->target after we read and check its value.
+	 *
+	 * We might be able to fix our concurrency issues with a work queue
+	 * where we schedule all work items (mode_set, page_flip, etc.) and
+	 * execute them one by one. Care needs to be taken to still deal with
+	 * any potential concurrency issues arising from interrupt calls.
+	 */
+
+	acrtc = adev->mode_info.crtcs[crtc_id];
+	target = acrtc->target;
+
+	/*
+	 * Received a page flip call after the display has been reset.
+	 * Just return in this case. Everything should be clean-up on reset.
+	 */
+
+	if (!target) {
+		WARN_ON(1);
+		return;
+	}
+
+	addr.address.grph.addr.low_part = lower_32_bits(crtc_base);
+	addr.address.grph.addr.high_part = upper_32_bits(crtc_base);
+	addr.flip_immediate = async;
+
+	DRM_DEBUG_DRIVER("%s Flipping to hi: 0x%x, low: 0x%x \n",
+			 __func__,
+			 addr.address.grph.addr.high_part,
+			 addr.address.grph.addr.low_part);
+
+	dc_flip_surface_addrs(
+			adev->dm.dc,
+			dc_target_get_status(target)->surfaces,
+			&addr, 1);
+}
+
+static int amdgpu_notify_freesync(struct drm_device *dev, void *data,
+				struct drm_file *filp)
+{
+	struct mod_freesync_params freesync_params;
+	uint8_t num_targets;
+	uint8_t i;
+	struct dc_target *target;
+
+	struct amdgpu_device *adev = dev->dev_private;
+	int r = 0;
+
+	/* Get freesync enable flag from DRM */
+
+	num_targets = dc_get_current_target_count(adev->dm.dc);
+
+	for (i = 0; i < num_targets; i++) {
+
+		target = dc_get_target_at_index(adev->dm.dc, i);
+
+		mod_freesync_update_state(adev->dm.freesync_module,
+						target->streams,
+						target->stream_count,
+						&freesync_params);
+	}
+
+	return r;
+}
+
+#ifdef CONFIG_DRM_AMDGPU_CIK
+static const struct amdgpu_display_funcs dm_dce_v8_0_display_funcs = {
+	.bandwidth_update = dm_bandwidth_update, /* called unconditionally */
+	.vblank_get_counter = dm_vblank_get_counter,/* called unconditionally */
+	.vblank_wait = NULL,
+	.backlight_set_level =
+		dm_set_backlight_level,/* called unconditionally */
+	.backlight_get_level =
+		dm_get_backlight_level,/* called unconditionally */
+	.hpd_sense = NULL,/* called unconditionally */
+	.hpd_set_polarity = NULL, /* called unconditionally */
+	.hpd_get_gpio_reg = NULL, /* VBIOS parsing. DAL does it. */
+	.page_flip = dm_page_flip, /* called unconditionally */
+	.page_flip_get_scanoutpos =
+		dm_crtc_get_scanoutpos,/* called unconditionally */
+	.add_encoder = NULL, /* VBIOS parsing. DAL does it. */
+	.add_connector = NULL, /* VBIOS parsing. DAL does it. */
+	.notify_freesync = amdgpu_notify_freesync,
+};
+#endif
+
+static const struct amdgpu_display_funcs dm_dce_v10_0_display_funcs = {
+	.bandwidth_update = dm_bandwidth_update, /* called unconditionally */
+	.vblank_get_counter = dm_vblank_get_counter,/* called unconditionally */
+	.vblank_wait = NULL,
+	.backlight_set_level =
+		dm_set_backlight_level,/* called unconditionally */
+	.backlight_get_level =
+		dm_get_backlight_level,/* called unconditionally */
+	.hpd_sense = NULL,/* called unconditionally */
+	.hpd_set_polarity = NULL, /* called unconditionally */
+	.hpd_get_gpio_reg = NULL, /* VBIOS parsing. DAL does it. */
+	.page_flip = dm_page_flip, /* called unconditionally */
+	.page_flip_get_scanoutpos =
+		dm_crtc_get_scanoutpos,/* called unconditionally */
+	.add_encoder = NULL, /* VBIOS parsing. DAL does it. */
+	.add_connector = NULL, /* VBIOS parsing. DAL does it. */
+	.notify_freesync = amdgpu_notify_freesync,
+
+};
+
+static const struct amdgpu_display_funcs dm_dce_v11_0_display_funcs = {
+	.bandwidth_update = dm_bandwidth_update, /* called unconditionally */
+	.vblank_get_counter = dm_vblank_get_counter,/* called unconditionally */
+	.vblank_wait = NULL,
+	.backlight_set_level =
+		dm_set_backlight_level,/* called unconditionally */
+	.backlight_get_level =
+		dm_get_backlight_level,/* called unconditionally */
+	.hpd_sense = NULL,/* called unconditionally */
+	.hpd_set_polarity = NULL, /* called unconditionally */
+	.hpd_get_gpio_reg = NULL, /* VBIOS parsing. DAL does it. */
+	.page_flip = dm_page_flip, /* called unconditionally */
+	.page_flip_get_scanoutpos =
+		dm_crtc_get_scanoutpos,/* called unconditionally */
+	.add_encoder = NULL, /* VBIOS parsing. DAL does it. */
+	.add_connector = NULL, /* VBIOS parsing. DAL does it. */
+	.notify_freesync = amdgpu_notify_freesync,
+
+};
+
+#if defined(CONFIG_DEBUG_KERNEL_DC)
+
+static ssize_t s3_debug_store(
+	struct device *device,
+	struct device_attribute *attr,
+	const char *buf,
+	size_t count)
+{
+	int ret;
+	int s3_state;
+	struct pci_dev *pdev = to_pci_dev(device);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	struct amdgpu_device *adev = drm_dev->dev_private;
+
+	ret = kstrtoint(buf, 0, &s3_state);
+
+	if (ret == 0) {
+		if (s3_state) {
+			dm_resume(adev);
+			amdgpu_dm_display_resume(adev);
+			drm_kms_helper_hotplug_event(adev->ddev);
+		} else
+			dm_suspend(adev);
+	}
+
+	return ret == 0 ? count : 0;
+}
+
+DEVICE_ATTR_WO(s3_debug);
+
+#endif
+
+static int dm_early_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	amdgpu_dm_set_irq_funcs(adev);
+
+	switch (adev->asic_type) {
+	case CHIP_BONAIRE:
+	case CHIP_HAWAII:
+		adev->mode_info.num_crtc = 6;
+		adev->mode_info.num_hpd = 6;
+		adev->mode_info.num_dig = 6;
+#ifdef CONFIG_DRM_AMDGPU_CIK
+		if (adev->mode_info.funcs == NULL)
+			adev->mode_info.funcs = &dm_dce_v8_0_display_funcs;
+#endif
+		break;
+	case CHIP_FIJI:
+	case CHIP_TONGA:
+		adev->mode_info.num_crtc = 6;
+		adev->mode_info.num_hpd = 6;
+		adev->mode_info.num_dig = 7;
+		if (adev->mode_info.funcs == NULL)
+			adev->mode_info.funcs = &dm_dce_v10_0_display_funcs;
+		break;
+	case CHIP_CARRIZO:
+		adev->mode_info.num_crtc = 3;
+		adev->mode_info.num_hpd = 6;
+		adev->mode_info.num_dig = 9;
+		if (adev->mode_info.funcs == NULL)
+			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
+		break;
+	case CHIP_STONEY:
+		adev->mode_info.num_crtc = 2;
+		adev->mode_info.num_hpd = 6;
+		adev->mode_info.num_dig = 9;
+		if (adev->mode_info.funcs == NULL)
+			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
+		break;
+	case CHIP_POLARIS11:
+		adev->mode_info.num_crtc = 5;
+		adev->mode_info.num_hpd = 5;
+		adev->mode_info.num_dig = 5;
+		if (adev->mode_info.funcs == NULL)
+			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
+		break;
+	case CHIP_POLARIS10:
+		adev->mode_info.num_crtc = 6;
+		adev->mode_info.num_hpd = 6;
+		adev->mode_info.num_dig = 6;
+		if (adev->mode_info.funcs == NULL)
+			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
+		break;
+	default:
+		DRM_ERROR("Usupported ASIC type: 0x%X\n", adev->asic_type);
+		return -EINVAL;
+	}
+
+	/* Note: Do NOT change adev->audio_endpt_rreg and
+	 * adev->audio_endpt_wreg because they are initialised in
+	 * amdgpu_device_init() */
+#if defined(CONFIG_DEBUG_KERNEL_DC)
+	device_create_file(
+		adev->ddev->dev,
+		&dev_attr_s3_debug);
+#endif
+
+	return 0;
+}
+
+bool amdgpu_dm_acquire_dal_lock(struct amdgpu_display_manager *dm)
+{
+	/* TODO */
+	return true;
+}
+
+bool amdgpu_dm_release_dal_lock(struct amdgpu_display_manager *dm)
+{
+	/* TODO */
+	return true;
+}
+
+
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
new file mode 100644
index 000000000000..1b54566f5da1
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2015 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 __AMDGPU_DM_H__
+#define __AMDGPU_DM_H__
+
+/*
+#include "linux/switch.h"
+*/
+
+/*
+ * This file contains the definition for amdgpu_display_manager
+ * and its API for amdgpu driver's use.
+ * This component provides all the display related functionality
+ * and this is the only component that calls DAL API.
+ * The API contained here intended for amdgpu driver use.
+ * The API that is called directly from KMS framework is located
+ * in amdgpu_dm_kms.h file
+ */
+
+#define AMDGPU_DM_MAX_DISPLAY_INDEX 31
+/*
+#include "include/amdgpu_dal_power_if.h"
+#include "amdgpu_dm_irq.h"
+*/
+
+#include "irq_types.h"
+#include "signal_types.h"
+
+/* Forward declarations */
+struct amdgpu_device;
+struct drm_device;
+struct amdgpu_dm_irq_handler_data;
+
+struct amdgpu_dm_prev_state {
+	struct drm_framebuffer *fb;
+	int32_t x;
+	int32_t y;
+	struct drm_display_mode mode;
+};
+
+struct common_irq_params {
+	struct amdgpu_device *adev;
+	enum dc_irq_source irq_src;
+};
+
+struct irq_list_head {
+	struct list_head head;
+	/* In case this interrupt needs post-processing, 'work' will be queued*/
+	struct work_struct work;
+};
+
+struct amdgpu_display_manager {
+	struct dal *dal;
+	struct dc *dc;
+	struct cgs_device *cgs_device;
+	/* lock to be used when DAL is called from SYNC IRQ context */
+	spinlock_t dal_lock;
+
+	struct amdgpu_device *adev;	/*AMD base driver*/
+	struct drm_device *ddev;	/*DRM base driver*/
+	u16 display_indexes_num;
+
+	struct amdgpu_dm_prev_state prev_state;
+
+	/*
+	 * 'irq_source_handler_table' holds a list of handlers
+	 * per (DAL) IRQ source.
+	 *
+	 * Each IRQ source may need to be handled at different contexts.
+	 * By 'context' we mean, for example:
+	 * - The ISR context, which is the direct interrupt handler.
+	 * - The 'deferred' context - this is the post-processing of the
+	 *	interrupt, but at a lower priority.
+	 *
+	 * Note that handlers are called in the same order as they were
+	 * registered (FIFO).
+	 */
+	struct irq_list_head irq_handler_list_low_tab[DAL_IRQ_SOURCES_NUMBER];
+	struct list_head irq_handler_list_high_tab[DAL_IRQ_SOURCES_NUMBER];
+
+	struct common_irq_params
+	pflip_params[DC_IRQ_SOURCE_PFLIP_LAST - DC_IRQ_SOURCE_PFLIP_FIRST + 1];
+
+	struct common_irq_params
+	vupdate_params[DC_IRQ_SOURCE_VUPDATE6 - DC_IRQ_SOURCE_VUPDATE1 + 1];
+
+	/* this spin lock synchronizes access to 'irq_handler_list_table' */
+	spinlock_t irq_handler_list_table_lock;
+
+	/* Timer-related data. */
+	struct list_head timer_handler_list;
+	struct workqueue_struct *timer_workqueue;
+
+	/* Use dal_mutex for any activity which is NOT syncronized by
+	 * DRM mode setting locks.
+	 * For example: amdgpu_dm_hpd_low_irq() calls into DAL *without*
+	 * DRM mode setting locks being acquired. This is where dal_mutex
+	 * is acquired before calling into DAL. */
+	struct mutex dal_mutex;
+
+	struct backlight_device *backlight_dev;
+
+	const struct dc_link *backlight_link;
+
+	struct work_struct mst_hotplug_work;
+
+	struct mod_freesync *freesync_module;
+};
+
+/* basic init/fini API */
+int amdgpu_dm_init(struct amdgpu_device *adev);
+
+void amdgpu_dm_fini(struct amdgpu_device *adev);
+
+void amdgpu_dm_destroy(void);
+
+/* initializes drm_device display related structures, based on the information
+ * provided by DAL. The drm strcutures are: drm_crtc, drm_connector,
+ * drm_encoder, drm_mode_config
+ *
+ * Returns 0 on success
+ */
+int amdgpu_dm_initialize_drm_device(
+	struct amdgpu_device *adev);
+
+/* removes and deallocates the drm structures, created by the above function */
+void amdgpu_dm_destroy_drm_device(
+	struct amdgpu_display_manager *dm);
+
+/* Locking/Mutex */
+bool amdgpu_dm_acquire_dal_lock(struct amdgpu_display_manager *dm);
+
+bool amdgpu_dm_release_dal_lock(struct amdgpu_display_manager *dm);
+
+/* Register "Backlight device" accessible by user-mode. */
+void amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm);
+
+extern const struct amdgpu_ip_block_version dm_ip_block;
+
+void amdgpu_dm_update_connector_after_detect(
+	struct amdgpu_connector *aconnector);
+
+struct amdgpu_connector *amdgpu_dm_find_first_crct_matching_connector(
+	struct drm_atomic_state *state,
+	struct drm_crtc *crtc,
+	bool from_state_var);
+
+#endif /* __AMDGPU_DM_H__ */
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
new file mode 100644
index 000000000000..d4e01b51f949
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -0,0 +1,484 @@
+/*
+ * Copyright 2015 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
+ *
+ */
+
+#include <linux/string.h>
+#include <linux/acpi.h>
+#include <linux/version.h>
+#include <linux/i2c.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/amdgpu_drm.h>
+#include <drm/drm_edid.h>
+
+#include "dm_services.h"
+#include "amdgpu.h"
+#include "dc.h"
+#include "amdgpu_dm.h"
+#include "amdgpu_dm_irq.h"
+#include "amdgpu_dm_types.h"
+
+#include "dm_helpers.h"
+
+/* dm_helpers_parse_edid_caps
+ *
+ * Parse edid caps
+ *
+ * @edid:	[in] pointer to edid
+ *  edid_caps:	[in] pointer to edid caps
+ * @return
+ *	void
+ * */
+enum dc_edid_status dm_helpers_parse_edid_caps(
+		struct dc_context *ctx,
+		const struct dc_edid *edid,
+		struct dc_edid_caps *edid_caps)
+{
+	struct edid *edid_buf = (struct edid *) edid->raw_edid;
+	struct cea_sad *sads;
+	int sad_count = -1;
+	int sadb_count = -1;
+	int i = 0;
+	int j = 0;
+	uint8_t *sadb = NULL;
+
+	enum dc_edid_status result = EDID_OK;
+
+	if (!edid_caps || !edid)
+		return EDID_BAD_INPUT;
+
+	if (!drm_edid_is_valid(edid_buf))
+		result = EDID_BAD_CHECKSUM;
+
+	edid_caps->manufacturer_id = (uint16_t) edid_buf->mfg_id[0] |
+					((uint16_t) edid_buf->mfg_id[1])<<8;
+	edid_caps->product_id = (uint16_t) edid_buf->prod_code[0] |
+					((uint16_t) edid_buf->prod_code[1])<<8;
+	edid_caps->serial_number = edid_buf->serial;
+	edid_caps->manufacture_week = edid_buf->mfg_week;
+	edid_caps->manufacture_year = edid_buf->mfg_year;
+
+	/* One of the four detailed_timings stores the monitor name. It's
+	 * stored in an array of length 13. */
+	for (i = 0; i < 4; i++) {
+		if (edid_buf->detailed_timings[i].data.other_data.type == 0xfc) {
+			while (j < 13 && edid_buf->detailed_timings[i].data.other_data.data.str.str[j]) {
+				if (edid_buf->detailed_timings[i].data.other_data.data.str.str[j] == '\n')
+					break;
+
+				edid_caps->display_name[j] =
+					edid_buf->detailed_timings[i].data.other_data.data.str.str[j];
+				j++;
+			}
+		}
+	}
+
+	edid_caps->edid_hdmi = drm_detect_hdmi_monitor(
+			(struct edid *) edid->raw_edid);
+
+	sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
+	if (sad_count <= 0) {
+		DRM_INFO("SADs count is: %d, don't need to read it\n",
+				sad_count);
+		return result;
+	}
+
+	edid_caps->audio_mode_count = sad_count < DC_MAX_AUDIO_DESC_COUNT ? sad_count : DC_MAX_AUDIO_DESC_COUNT;
+	for (i = 0; i < edid_caps->audio_mode_count; ++i) {
+		struct cea_sad *sad = &sads[i];
+
+		edid_caps->audio_modes[i].format_code = sad->format;
+		edid_caps->audio_modes[i].channel_count = sad->channels;
+		edid_caps->audio_modes[i].sample_rate = sad->freq;
+		edid_caps->audio_modes[i].sample_size = sad->byte2;
+	}
+
+	sadb_count = drm_edid_to_speaker_allocation((struct edid *) edid->raw_edid, &sadb);
+
+	if (sadb_count < 0) {
+		DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sadb_count);
+		sadb_count = 0;
+	}
+
+	if (sadb_count)
+		edid_caps->speaker_flags = sadb[0];
+	else
+		edid_caps->speaker_flags = DEFAULT_SPEAKER_LOCATION;
+
+	kfree(sads);
+	kfree(sadb);
+
+	return result;
+}
+
+static struct amdgpu_connector *get_connector_for_sink(
+	struct drm_device *dev,
+	const struct dc_sink *sink)
+{
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+		if (aconnector->dc_sink == sink)
+			return aconnector;
+	}
+
+	return NULL;
+}
+
+static struct amdgpu_connector *get_connector_for_link(
+	struct drm_device *dev,
+	const struct dc_link *link)
+{
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+		if (aconnector->dc_link == link)
+			return aconnector;
+	}
+
+	return NULL;
+}
+
+static void get_payload_table(
+		struct amdgpu_connector *aconnector,
+		struct dp_mst_stream_allocation_table *proposed_table)
+{
+	int i;
+	struct drm_dp_mst_topology_mgr *mst_mgr =
+			&aconnector->mst_port->mst_mgr;
+
+	mutex_lock(&mst_mgr->payload_lock);
+
+	proposed_table->stream_count = 0;
+
+	/* number of active streams */
+	for (i = 0; i < mst_mgr->max_payloads; i++) {
+		if (mst_mgr->payloads[i].num_slots == 0)
+			break; /* end of vcp_id table */
+
+		ASSERT(mst_mgr->payloads[i].payload_state !=
+				DP_PAYLOAD_DELETE_LOCAL);
+
+		if (mst_mgr->payloads[i].payload_state == DP_PAYLOAD_LOCAL ||
+			mst_mgr->payloads[i].payload_state ==
+					DP_PAYLOAD_REMOTE) {
+
+			struct dp_mst_stream_allocation *sa =
+					&proposed_table->stream_allocations[
+						proposed_table->stream_count];
+
+			sa->slot_count = mst_mgr->payloads[i].num_slots;
+			sa->vcp_id = mst_mgr->proposed_vcpis[i]->vcpi;
+			proposed_table->stream_count++;
+		}
+	}
+
+	mutex_unlock(&mst_mgr->payload_lock);
+}
+
+/*
+ * Writes payload allocation table in immediate downstream device.
+ */
+bool dm_helpers_dp_mst_write_payload_allocation_table(
+		struct dc_context *ctx,
+		const struct dc_stream *stream,
+		struct dp_mst_stream_allocation_table *proposed_table,
+		bool enable)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector;
+	struct drm_dp_mst_topology_mgr *mst_mgr;
+	struct drm_dp_mst_port *mst_port;
+	int slots = 0;
+	bool ret;
+	int clock;
+	int bpp = 0;
+	int pbn = 0;
+
+	aconnector = get_connector_for_sink(dev, stream->sink);
+
+	if (!aconnector || !aconnector->mst_port)
+		return false;
+
+	mst_mgr = &aconnector->mst_port->mst_mgr;
+
+	if (!mst_mgr->mst_state)
+		return false;
+
+	mst_port = aconnector->port;
+
+	if (enable) {
+		clock = stream->timing.pix_clk_khz;
+
+		switch (stream->timing.display_color_depth) {
+
+		case COLOR_DEPTH_666:
+			bpp = 6;
+			break;
+		case COLOR_DEPTH_888:
+			bpp = 8;
+			break;
+		case COLOR_DEPTH_101010:
+			bpp = 10;
+			break;
+		case COLOR_DEPTH_121212:
+			bpp = 12;
+			break;
+		case COLOR_DEPTH_141414:
+			bpp = 14;
+			break;
+		case COLOR_DEPTH_161616:
+			bpp = 16;
+			break;
+		default:
+			ASSERT(bpp != 0);
+			break;
+		}
+
+		bpp = bpp * 3;
+
+		/* TODO need to know link rate */
+
+		pbn = drm_dp_calc_pbn_mode(clock, bpp);
+
+		slots = drm_dp_find_vcpi_slots(mst_mgr, pbn);
+		ret = drm_dp_mst_allocate_vcpi(mst_mgr, mst_port, pbn, slots);
+
+		if (!ret)
+			return false;
+
+	} else {
+		drm_dp_mst_reset_vcpi_slots(mst_mgr, mst_port);
+	}
+
+	ret = drm_dp_update_payload_part1(mst_mgr);
+
+	/* mst_mgr->->payloads are VC payload notify MST branch using DPCD or
+	 * AUX message. The sequence is slot 1-63 allocated sequence for each
+	 * stream. AMD ASIC stream slot allocation should follow the same
+	 * sequence. copy DRM MST allocation to dc */
+
+	get_payload_table(aconnector, proposed_table);
+
+	if (ret)
+		return false;
+
+	return true;
+}
+
+/*
+ * Polls for ACT (allocation change trigger) handled and sends
+ * ALLOCATE_PAYLOAD message.
+ */
+bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
+		struct dc_context *ctx,
+		const struct dc_stream *stream)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector;
+	struct drm_dp_mst_topology_mgr *mst_mgr;
+	int ret;
+
+	aconnector = get_connector_for_sink(dev, stream->sink);
+
+	if (!aconnector || !aconnector->mst_port)
+		return false;
+
+	mst_mgr = &aconnector->mst_port->mst_mgr;
+
+	if (!mst_mgr->mst_state)
+		return false;
+
+	ret = drm_dp_check_act_status(mst_mgr);
+
+	if (ret)
+		return false;
+
+	return true;
+}
+
+bool dm_helpers_dp_mst_send_payload_allocation(
+		struct dc_context *ctx,
+		const struct dc_stream *stream,
+		bool enable)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector;
+	struct drm_dp_mst_topology_mgr *mst_mgr;
+	struct drm_dp_mst_port *mst_port;
+	int ret;
+
+	aconnector = get_connector_for_sink(dev, stream->sink);
+
+	if (!aconnector || !aconnector->mst_port)
+		return false;
+
+	mst_port = aconnector->port;
+
+	mst_mgr = &aconnector->mst_port->mst_mgr;
+
+	if (!mst_mgr->mst_state)
+		return false;
+
+	ret = drm_dp_update_payload_part2(mst_mgr);
+
+	if (ret)
+		return false;
+
+	if (!enable)
+		drm_dp_mst_deallocate_vcpi(mst_mgr, mst_port);
+
+	return true;
+}
+
+bool dm_helpers_dp_mst_start_top_mgr(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		bool boot)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector = get_connector_for_link(dev, link);
+
+	if (!aconnector) {
+			DRM_ERROR("Failed to found connector for link!");
+			return false;
+	}
+
+	if (boot) {
+		DRM_INFO("DM_MST: Differing MST start on aconnector: %p [id: %d]\n",
+					aconnector, aconnector->base.base.id);
+		return true;
+	}
+
+	DRM_INFO("DM_MST: starting TM on aconnector: %p [id: %d]\n",
+			aconnector, aconnector->base.base.id);
+
+	return (drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true) == 0);
+}
+
+void dm_helpers_dp_mst_stop_top_mgr(
+		struct dc_context *ctx,
+		const struct dc_link *link)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector = get_connector_for_link(dev, link);
+
+	if (!aconnector) {
+			DRM_ERROR("Failed to found connector for link!");
+			return;
+	}
+
+	DRM_INFO("DM_MST: stopping TM on aconnector: %p [id: %d]\n",
+			aconnector, aconnector->base.base.id);
+
+	if (aconnector->mst_mgr.mst_state == true)
+		drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, false);
+}
+
+bool dm_helpers_dp_read_dpcd(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		uint32_t address,
+		uint8_t *data,
+		uint32_t size)
+{
+
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector = get_connector_for_link(dev, link);
+
+	if (!aconnector) {
+		DRM_ERROR("Failed to found connector for link!");
+		return false;
+	}
+
+	return drm_dp_dpcd_read(&aconnector->dm_dp_aux.aux, address,
+			data, size) > 0;
+}
+
+bool dm_helpers_dp_write_dpcd(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		uint32_t address,
+		const uint8_t *data,
+		uint32_t size)
+{
+
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector = get_connector_for_link(dev, link);
+
+	if (!aconnector) {
+		DRM_ERROR("Failed to found connector for link!");
+		return false;
+	}
+
+	return drm_dp_dpcd_write(&aconnector->dm_dp_aux.aux,
+			address, (uint8_t *)data, size) > 0;
+}
+
+bool dm_helpers_submit_i2c(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		struct i2c_command *cmd)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	struct drm_device *dev = adev->ddev;
+	struct amdgpu_connector *aconnector = get_connector_for_link(dev, link);
+	struct i2c_msg *msgs;
+	int i = 0;
+	int num = cmd->number_of_payloads;
+	bool result;
+
+	if (!aconnector) {
+		DRM_ERROR("Failed to found connector for link!");
+		return false;
+	}
+
+	msgs = kzalloc(num * sizeof(struct i2c_msg), GFP_KERNEL);
+
+	if (!msgs)
+		return false;
+
+	for (i = 0; i < num; i++) {
+		msgs[i].flags = cmd->payloads[i].write ? I2C_M_RD : 0;
+		msgs[i].addr = cmd->payloads[i].address;
+		msgs[i].len = cmd->payloads[i].length;
+		msgs[i].buf = cmd->payloads[i].data;
+	}
+
+	result = i2c_transfer(&aconnector->i2c->base, msgs, num) == num;
+
+	kfree(msgs);
+
+	return result;
+}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
new file mode 100644
index 000000000000..20e074971bff
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
@@ -0,0 +1,829 @@
+/*
+ * Copyright 2015 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
+ *
+ */
+
+#include <drm/drmP.h>
+
+#include "dm_services_types.h"
+#include "dc.h"
+
+#include "amdgpu.h"
+#include "amdgpu_dm.h"
+#include "amdgpu_dm_irq.h"
+
+/******************************************************************************
+ * Private declarations.
+ *****************************************************************************/
+
+struct handler_common_data {
+	struct list_head list;
+	interrupt_handler handler;
+	void *handler_arg;
+
+	/* DM which this handler belongs to */
+	struct amdgpu_display_manager *dm;
+};
+
+struct amdgpu_dm_irq_handler_data {
+	struct handler_common_data hcd;
+	/* DAL irq source which registered for this interrupt. */
+	enum dc_irq_source irq_source;
+};
+
+struct amdgpu_dm_timer_handler_data {
+	struct handler_common_data hcd;
+	struct delayed_work d_work;
+};
+
+#define DM_IRQ_TABLE_LOCK(adev, flags) \
+	spin_lock_irqsave(&adev->dm.irq_handler_list_table_lock, flags)
+
+#define DM_IRQ_TABLE_UNLOCK(adev, flags) \
+	spin_unlock_irqrestore(&adev->dm.irq_handler_list_table_lock, flags)
+
+/******************************************************************************
+ * Private functions.
+ *****************************************************************************/
+
+static void init_handler_common_data(
+	struct handler_common_data *hcd,
+	void (*ih)(void *),
+	void *args,
+	struct amdgpu_display_manager *dm)
+{
+	hcd->handler = ih;
+	hcd->handler_arg = args;
+	hcd->dm = dm;
+}
+
+/**
+ * dm_irq_work_func - Handle an IRQ outside of the interrupt handler proper.
+ *
+ * @work: work struct
+ */
+static void dm_irq_work_func(struct work_struct *work)
+{
+	struct list_head *entry;
+	struct irq_list_head *irq_list_head =
+		container_of(work, struct irq_list_head, work);
+	struct list_head *handler_list = &irq_list_head->head;
+	struct amdgpu_dm_irq_handler_data *handler_data;
+
+	list_for_each(entry, handler_list) {
+		handler_data =
+			list_entry(
+				entry,
+				struct amdgpu_dm_irq_handler_data,
+				hcd.list);
+
+		DRM_DEBUG_KMS("DM_IRQ: work_func: for dal_src=%d\n",
+				handler_data->irq_source);
+
+		DRM_DEBUG_KMS("DM_IRQ: schedule_work: for dal_src=%d\n",
+			handler_data->irq_source);
+
+		handler_data->hcd.handler(handler_data->hcd.handler_arg);
+	}
+
+	/* Call a DAL subcomponent which registered for interrupt notification
+	 * at INTERRUPT_LOW_IRQ_CONTEXT.
+	 * (The most common use is HPD interrupt) */
+}
+
+/**
+ * Remove a handler and return a pointer to hander list from which the
+ * handler was removed.
+ */
+static struct list_head *remove_irq_handler(
+	struct amdgpu_device *adev,
+	void *ih,
+	const struct dc_interrupt_params *int_params)
+{
+	struct list_head *hnd_list;
+	struct list_head *entry, *tmp;
+	struct amdgpu_dm_irq_handler_data *handler;
+	unsigned long irq_table_flags;
+	bool handler_removed = false;
+	enum dc_irq_source irq_source;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	irq_source = int_params->irq_source;
+
+	switch (int_params->int_context) {
+	case INTERRUPT_HIGH_IRQ_CONTEXT:
+		hnd_list = &adev->dm.irq_handler_list_high_tab[irq_source];
+		break;
+	case INTERRUPT_LOW_IRQ_CONTEXT:
+	default:
+		hnd_list = &adev->dm.irq_handler_list_low_tab[irq_source].head;
+		break;
+	}
+
+	list_for_each_safe(entry, tmp, hnd_list) {
+
+		handler = list_entry(entry, struct amdgpu_dm_irq_handler_data,
+				hcd.list);
+
+		if (ih == handler) {
+			/* Found our handler. Remove it from the list. */
+			list_del(&handler->hcd.list);
+			handler_removed = true;
+			break;
+		}
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	if (handler_removed == false) {
+		/* Not necessarily an error - caller may not
+		 * know the context. */
+		return NULL;
+	}
+
+	kfree(handler);
+
+	DRM_DEBUG_KMS(
+	"DM_IRQ: removed irq handler: %p for: dal_src=%d, irq context=%d\n",
+		ih, int_params->irq_source, int_params->int_context);
+
+	return hnd_list;
+}
+
+/* If 'handler_in == NULL' then remove ALL handlers. */
+static void remove_timer_handler(
+	struct amdgpu_device *adev,
+	struct amdgpu_dm_timer_handler_data *handler_in)
+{
+	struct amdgpu_dm_timer_handler_data *handler_temp;
+	struct list_head *handler_list;
+	struct list_head *entry, *tmp;
+	unsigned long irq_table_flags;
+	bool handler_removed = false;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	handler_list = &adev->dm.timer_handler_list;
+
+	list_for_each_safe(entry, tmp, handler_list) {
+		/* Note that list_for_each_safe() guarantees that
+		 * handler_temp is NOT null. */
+		handler_temp = list_entry(entry,
+				struct amdgpu_dm_timer_handler_data, hcd.list);
+
+		if (handler_in == NULL || handler_in == handler_temp) {
+			list_del(&handler_temp->hcd.list);
+			DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+			DRM_DEBUG_KMS("DM_IRQ: removing timer handler: %p\n",
+					handler_temp);
+
+			if (handler_in == NULL) {
+				/* Since it is still in the queue, it must
+				 * be cancelled. */
+				cancel_delayed_work_sync(&handler_temp->d_work);
+			}
+
+			kfree(handler_temp);
+			handler_removed = true;
+
+			DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+		}
+
+		if (handler_in == NULL) {
+			/* Remove ALL handlers. */
+			continue;
+		}
+
+		if (handler_in == handler_temp) {
+			/* Remove a SPECIFIC handler.
+			 * Found our handler - we can stop here. */
+			break;
+		}
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	if (handler_in != NULL && handler_removed == false) {
+		DRM_ERROR("DM_IRQ: handler: %p is not in the list!\n",
+				handler_in);
+	}
+}
+
+/**
+ * dm_timer_work_func - Handle a timer.
+ *
+ * @work: work struct
+ */
+static void dm_timer_work_func(
+	struct work_struct *work)
+{
+	struct amdgpu_dm_timer_handler_data *handler_data =
+		container_of(work, struct amdgpu_dm_timer_handler_data,
+				d_work.work);
+
+	DRM_DEBUG_KMS("DM_IRQ: work_func: handler_data=%p\n", handler_data);
+
+	/* Call a DAL subcomponent which registered for timer notification. */
+	handler_data->hcd.handler(handler_data->hcd.handler_arg);
+
+	/* We support only "single shot" timers. That means we must delete
+	 * the handler after it was called. */
+	remove_timer_handler(handler_data->hcd.dm->adev, handler_data);
+}
+
+static bool validate_irq_registration_params(
+	struct dc_interrupt_params *int_params,
+	void (*ih)(void *))
+{
+	if (NULL == int_params || NULL == ih) {
+		DRM_ERROR("DM_IRQ: invalid input!\n");
+		return false;
+	}
+
+	if (int_params->int_context >= INTERRUPT_CONTEXT_NUMBER) {
+		DRM_ERROR("DM_IRQ: invalid context: %d!\n",
+				int_params->int_context);
+		return false;
+	}
+
+	if (!DAL_VALID_IRQ_SRC_NUM(int_params->irq_source)) {
+		DRM_ERROR("DM_IRQ: invalid irq_source: %d!\n",
+				int_params->irq_source);
+		return false;
+	}
+
+	return true;
+}
+
+static bool validate_irq_unregistration_params(
+	enum dc_irq_source irq_source,
+	irq_handler_idx handler_idx)
+{
+	if (DAL_INVALID_IRQ_HANDLER_IDX == handler_idx) {
+		DRM_ERROR("DM_IRQ: invalid handler_idx==NULL!\n");
+		return false;
+	}
+
+	if (!DAL_VALID_IRQ_SRC_NUM(irq_source)) {
+		DRM_ERROR("DM_IRQ: invalid irq_source:%d!\n", irq_source);
+		return false;
+	}
+
+	return true;
+}
+/******************************************************************************
+ * Public functions.
+ *
+ * Note: caller is responsible for input validation.
+ *****************************************************************************/
+
+void *amdgpu_dm_irq_register_interrupt(
+	struct amdgpu_device *adev,
+	struct dc_interrupt_params *int_params,
+	void (*ih)(void *),
+	void *handler_args)
+{
+	struct list_head *hnd_list;
+	struct amdgpu_dm_irq_handler_data *handler_data;
+	unsigned long irq_table_flags;
+	enum dc_irq_source irq_source;
+
+	if (false == validate_irq_registration_params(int_params, ih))
+		return DAL_INVALID_IRQ_HANDLER_IDX;
+
+	handler_data = kzalloc(sizeof(*handler_data), GFP_KERNEL);
+	if (!handler_data) {
+		DRM_ERROR("DM_IRQ: failed to allocate irq handler!\n");
+		return DAL_INVALID_IRQ_HANDLER_IDX;
+	}
+
+	memset(handler_data, 0, sizeof(*handler_data));
+
+	init_handler_common_data(&handler_data->hcd, ih, handler_args,
+			&adev->dm);
+
+	irq_source = int_params->irq_source;
+
+	handler_data->irq_source = irq_source;
+
+	/* Lock the list, add the handler. */
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	switch (int_params->int_context) {
+	case INTERRUPT_HIGH_IRQ_CONTEXT:
+		hnd_list = &adev->dm.irq_handler_list_high_tab[irq_source];
+		break;
+	case INTERRUPT_LOW_IRQ_CONTEXT:
+	default:
+		hnd_list = &adev->dm.irq_handler_list_low_tab[irq_source].head;
+		break;
+	}
+
+	list_add_tail(&handler_data->hcd.list, hnd_list);
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	/* This pointer will be stored by code which requested interrupt
+	 * registration.
+	 * The same pointer will be needed in order to unregister the
+	 * interrupt. */
+
+	DRM_DEBUG_KMS(
+		"DM_IRQ: added irq handler: %p for: dal_src=%d, irq context=%d\n",
+		handler_data,
+		irq_source,
+		int_params->int_context);
+
+	return handler_data;
+}
+
+void amdgpu_dm_irq_unregister_interrupt(
+	struct amdgpu_device *adev,
+	enum dc_irq_source irq_source,
+	void *ih)
+{
+	struct list_head *handler_list;
+	struct dc_interrupt_params int_params;
+	int i;
+
+	if (false == validate_irq_unregistration_params(irq_source, ih))
+		return;
+
+	memset(&int_params, 0, sizeof(int_params));
+
+	int_params.irq_source = irq_source;
+
+	for (i = 0; i < INTERRUPT_CONTEXT_NUMBER; i++) {
+
+		int_params.int_context = i;
+
+		handler_list = remove_irq_handler(adev, ih, &int_params);
+
+		if (handler_list != NULL)
+			break;
+	}
+
+	if (handler_list == NULL) {
+		/* If we got here, it means we searched all irq contexts
+		 * for this irq source, but the handler was not found. */
+		DRM_ERROR(
+		"DM_IRQ: failed to find irq handler:%p for irq_source:%d!\n",
+			ih, irq_source);
+	}
+}
+
+int amdgpu_dm_irq_init(
+	struct amdgpu_device *adev)
+{
+	int src;
+	struct irq_list_head *lh;
+
+	DRM_DEBUG_KMS("DM_IRQ\n");
+
+	spin_lock_init(&adev->dm.irq_handler_list_table_lock);
+
+	for (src = 0; src < DAL_IRQ_SOURCES_NUMBER; src++) {
+		/* low context handler list init */
+		lh = &adev->dm.irq_handler_list_low_tab[src];
+		INIT_LIST_HEAD(&lh->head);
+		INIT_WORK(&lh->work, dm_irq_work_func);
+
+		/* high context handler init */
+		INIT_LIST_HEAD(&adev->dm.irq_handler_list_high_tab[src]);
+	}
+
+	INIT_LIST_HEAD(&adev->dm.timer_handler_list);
+
+	/* allocate and initialize the workqueue for DM timer */
+	adev->dm.timer_workqueue = create_singlethread_workqueue(
+			"dm_timer_queue");
+	if (adev->dm.timer_workqueue == NULL) {
+		DRM_ERROR("DM_IRQ: unable to create timer queue!\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+void amdgpu_dm_irq_register_timer(
+	struct amdgpu_device *adev,
+	struct dc_timer_interrupt_params *int_params,
+	interrupt_handler ih,
+	void *args)
+{
+	unsigned long jf_delay;
+	struct list_head *handler_list;
+	struct amdgpu_dm_timer_handler_data *handler_data;
+	unsigned long irq_table_flags;
+
+	handler_data = kzalloc(sizeof(*handler_data), GFP_KERNEL);
+	if (!handler_data) {
+		DRM_ERROR("DM_IRQ: failed to allocate timer handler!\n");
+		return;
+	}
+
+	memset(handler_data, 0, sizeof(*handler_data));
+
+	init_handler_common_data(&handler_data->hcd, ih, args, &adev->dm);
+
+	INIT_DELAYED_WORK(&handler_data->d_work, dm_timer_work_func);
+
+	/* Lock the list, add the handler. */
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	handler_list = &adev->dm.timer_handler_list;
+
+	list_add_tail(&handler_data->hcd.list, handler_list);
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	jf_delay = usecs_to_jiffies(int_params->micro_sec_interval);
+
+	queue_delayed_work(adev->dm.timer_workqueue, &handler_data->d_work,
+			jf_delay);
+
+	DRM_DEBUG_KMS("DM_IRQ: added handler:%p with micro_sec_interval=%u\n",
+			handler_data, int_params->micro_sec_interval);
+	return;
+}
+
+/* DM IRQ and timer resource release */
+void amdgpu_dm_irq_fini(
+	struct amdgpu_device *adev)
+{
+	int src;
+	struct irq_list_head *lh;
+	DRM_DEBUG_KMS("DM_IRQ: releasing resources.\n");
+
+	for (src = 0; src < DAL_IRQ_SOURCES_NUMBER; src++) {
+
+		/* The handler was removed from the table,
+		 * it means it is safe to flush all the 'work'
+		 * (because no code can schedule a new one). */
+		lh = &adev->dm.irq_handler_list_low_tab[src];
+		flush_work(&lh->work);
+	}
+
+	/* Cancel ALL timers and release handlers (if any). */
+	remove_timer_handler(adev, NULL);
+	/* Release the queue itself. */
+	destroy_workqueue(adev->dm.timer_workqueue);
+}
+
+int amdgpu_dm_irq_suspend(
+	struct amdgpu_device *adev)
+{
+	int src;
+	struct list_head *hnd_list_h;
+	struct list_head *hnd_list_l;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	DRM_DEBUG_KMS("DM_IRQ: suspend\n");
+
+	/* disable HW interrupt */
+	for (src = DC_IRQ_SOURCE_HPD1; src < DAL_IRQ_SOURCES_NUMBER; src++) {
+		hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head;
+		hnd_list_h = &adev->dm.irq_handler_list_high_tab[src];
+		if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h))
+			dc_interrupt_set(adev->dm.dc, src, false);
+
+		DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+		flush_work(&adev->dm.irq_handler_list_low_tab[src].work);
+
+		DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+	return 0;
+}
+
+int amdgpu_dm_irq_resume_early(struct amdgpu_device *adev)
+{
+	int src;
+	struct list_head *hnd_list_h, *hnd_list_l;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	DRM_DEBUG_KMS("DM_IRQ: early resume\n");
+
+	/* re-enable short pulse interrupts HW interrupt */
+	for (src = DC_IRQ_SOURCE_HPD1RX; src < DC_IRQ_SOURCE_HPD6RX + 1; src++) {
+		hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head;
+		hnd_list_h = &adev->dm.irq_handler_list_high_tab[src];
+		if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h))
+			dc_interrupt_set(adev->dm.dc, src, true);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	return 0;
+}
+
+int amdgpu_dm_irq_resume(struct amdgpu_device *adev)
+{
+	int src;
+	struct list_head *hnd_list_h, *hnd_list_l;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	DRM_DEBUG_KMS("DM_IRQ: resume\n");
+
+	/* re-enable HW interrupt */
+	for (src = DC_IRQ_SOURCE_HPD1; src < DAL_IRQ_SOURCES_NUMBER; src++) {
+		hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head;
+		hnd_list_h = &adev->dm.irq_handler_list_high_tab[src];
+		if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h))
+			dc_interrupt_set(adev->dm.dc, src, true);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+	return 0;
+}
+
+/**
+ * amdgpu_dm_irq_schedule_work - schedule all work items registered for the
+ * "irq_source".
+ */
+static void amdgpu_dm_irq_schedule_work(
+	struct amdgpu_device *adev,
+	enum dc_irq_source irq_source)
+{
+	unsigned long irq_table_flags;
+	struct work_struct *work = NULL;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	if (!list_empty(&adev->dm.irq_handler_list_low_tab[irq_source].head))
+		work = &adev->dm.irq_handler_list_low_tab[irq_source].work;
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	if (work) {
+		if (!schedule_work(work))
+			DRM_INFO("amdgpu_dm_irq_schedule_work FAILED src %d\n",
+						irq_source);
+	}
+
+}
+
+/** amdgpu_dm_irq_immediate_work
+ *  Callback high irq work immediately, don't send to work queue
+ */
+static void amdgpu_dm_irq_immediate_work(
+	struct amdgpu_device *adev,
+	enum dc_irq_source irq_source)
+{
+	struct amdgpu_dm_irq_handler_data *handler_data;
+	struct list_head *entry;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	list_for_each(
+		entry,
+		&adev->dm.irq_handler_list_high_tab[irq_source]) {
+
+		handler_data =
+			list_entry(
+				entry,
+				struct amdgpu_dm_irq_handler_data,
+				hcd.list);
+
+		/* Call a subcomponent which registered for immediate
+		 * interrupt notification */
+		handler_data->hcd.handler(handler_data->hcd.handler_arg);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+}
+
+/*
+ * amdgpu_dm_irq_handler
+ *
+ * Generic IRQ handler, calls all registered high irq work immediately, and
+ * schedules work for low irq
+ */
+int amdgpu_dm_irq_handler(
+		struct amdgpu_device *adev,
+		struct amdgpu_irq_src *source,
+		struct amdgpu_iv_entry *entry)
+{
+
+	enum dc_irq_source src =
+		dc_interrupt_to_irq_source(
+			adev->dm.dc,
+			entry->src_id,
+			entry->src_data[0]);
+
+	dc_interrupt_ack(adev->dm.dc, src);
+
+	/* Call high irq work immediately */
+	amdgpu_dm_irq_immediate_work(adev, src);
+	/*Schedule low_irq work */
+	amdgpu_dm_irq_schedule_work(adev, src);
+
+	return 0;
+}
+
+static enum dc_irq_source amdgpu_dm_hpd_to_dal_irq_source(unsigned type)
+{
+	switch (type) {
+	case AMDGPU_HPD_1:
+		return DC_IRQ_SOURCE_HPD1;
+	case AMDGPU_HPD_2:
+		return DC_IRQ_SOURCE_HPD2;
+	case AMDGPU_HPD_3:
+		return DC_IRQ_SOURCE_HPD3;
+	case AMDGPU_HPD_4:
+		return DC_IRQ_SOURCE_HPD4;
+	case AMDGPU_HPD_5:
+		return DC_IRQ_SOURCE_HPD5;
+	case AMDGPU_HPD_6:
+		return DC_IRQ_SOURCE_HPD6;
+	default:
+		return DC_IRQ_SOURCE_INVALID;
+	}
+}
+
+static int amdgpu_dm_set_hpd_irq_state(struct amdgpu_device *adev,
+					struct amdgpu_irq_src *source,
+					unsigned type,
+					enum amdgpu_interrupt_state state)
+{
+	enum dc_irq_source src = amdgpu_dm_hpd_to_dal_irq_source(type);
+	bool st = (state == AMDGPU_IRQ_STATE_ENABLE);
+
+	dc_interrupt_set(adev->dm.dc, src, st);
+	return 0;
+}
+
+static inline int dm_irq_state(
+	struct amdgpu_device *adev,
+	struct amdgpu_irq_src *source,
+	unsigned crtc_id,
+	enum amdgpu_interrupt_state state,
+	const enum irq_type dal_irq_type,
+	const char *func)
+{
+	bool st;
+	enum dc_irq_source irq_source;
+
+	struct amdgpu_crtc *acrtc = adev->mode_info.crtcs[crtc_id];
+
+	if (!acrtc) {
+		DRM_ERROR(
+			"%s: crtc is NULL at id :%d\n",
+	 		func,
+	 		crtc_id);
+		return 0;
+	}
+
+	irq_source = dal_irq_type + acrtc->otg_inst;
+
+	st = (state == AMDGPU_IRQ_STATE_ENABLE);
+
+	dc_interrupt_set(adev->dm.dc, irq_source, st);
+	return 0;
+}
+
+static int amdgpu_dm_set_pflip_irq_state(struct amdgpu_device *adev,
+					struct amdgpu_irq_src *source,
+					unsigned crtc_id,
+					enum amdgpu_interrupt_state state)
+{
+	return dm_irq_state(
+		adev,
+		source,
+		crtc_id,
+		state,
+		IRQ_TYPE_PFLIP,
+		__func__);
+}
+
+static int amdgpu_dm_set_crtc_irq_state(struct amdgpu_device *adev,
+					struct amdgpu_irq_src *source,
+					unsigned crtc_id,
+					enum amdgpu_interrupt_state state)
+{
+	return dm_irq_state(
+		adev,
+		source,
+		crtc_id,
+		state,
+		IRQ_TYPE_VUPDATE,
+		__func__);
+}
+
+static const struct amdgpu_irq_src_funcs dm_crtc_irq_funcs = {
+	.set = amdgpu_dm_set_crtc_irq_state,
+	.process = amdgpu_dm_irq_handler,
+};
+
+static const struct amdgpu_irq_src_funcs dm_pageflip_irq_funcs = {
+	.set = amdgpu_dm_set_pflip_irq_state,
+	.process = amdgpu_dm_irq_handler,
+};
+
+static const struct amdgpu_irq_src_funcs dm_hpd_irq_funcs = {
+	.set = amdgpu_dm_set_hpd_irq_state,
+	.process = amdgpu_dm_irq_handler,
+};
+
+void amdgpu_dm_set_irq_funcs(struct amdgpu_device *adev)
+{
+	adev->crtc_irq.num_types = AMDGPU_CRTC_IRQ_LAST;
+	adev->crtc_irq.funcs = &dm_crtc_irq_funcs;
+
+	adev->pageflip_irq.num_types = AMDGPU_PAGEFLIP_IRQ_LAST;
+	adev->pageflip_irq.funcs = &dm_pageflip_irq_funcs;
+
+	adev->hpd_irq.num_types = AMDGPU_HPD_LAST;
+	adev->hpd_irq.funcs = &dm_hpd_irq_funcs;
+}
+
+/*
+ * amdgpu_dm_hpd_init - hpd setup callback.
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Setup the hpd pins used by the card (evergreen+).
+ * Enable the pin, set the polarity, and enable the hpd interrupts.
+ */
+void amdgpu_dm_hpd_init(struct amdgpu_device *adev)
+{
+	struct drm_device *dev = adev->ddev;
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		struct amdgpu_connector *amdgpu_connector =
+				to_amdgpu_connector(connector);
+
+		const struct dc_link *dc_link = amdgpu_connector->dc_link;
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd) {
+			dc_interrupt_set(adev->dm.dc,
+					dc_link->irq_source_hpd,
+					true);
+		}
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd_rx) {
+			dc_interrupt_set(adev->dm.dc,
+					dc_link->irq_source_hpd_rx,
+					true);
+		}
+	}
+}
+
+/**
+ * amdgpu_dm_hpd_fini - hpd tear down callback.
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Tear down the hpd pins used by the card (evergreen+).
+ * Disable the hpd interrupts.
+ */
+void amdgpu_dm_hpd_fini(struct amdgpu_device *adev)
+{
+	struct drm_device *dev = adev->ddev;
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		struct amdgpu_connector *amdgpu_connector =
+				to_amdgpu_connector(connector);
+		const struct dc_link *dc_link = amdgpu_connector->dc_link;
+
+		dc_interrupt_set(adev->dm.dc, dc_link->irq_source_hpd, false);
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd_rx) {
+			dc_interrupt_set(adev->dm.dc,
+					dc_link->irq_source_hpd_rx,
+					false);
+		}
+	}
+}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h
new file mode 100644
index 000000000000..9339861c8897
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2015 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.
+ *
+ */
+
+#ifndef __AMDGPU_DM_IRQ_H__
+#define __AMDGPU_DM_IRQ_H__
+
+#include "irq_types.h" /* DAL irq definitions */
+
+/*
+ * Display Manager IRQ-related interfaces (for use by DAL).
+ */
+
+/**
+ * amdgpu_dm_irq_init - Initialize internal structures of 'amdgpu_dm_irq'.
+ *
+ * This function should be called exactly once - during DM initialization.
+ *
+ * Returns:
+ *	0 - success
+ *	non-zero - error
+ */
+int amdgpu_dm_irq_init(
+	struct amdgpu_device *adev);
+
+/**
+ * amdgpu_dm_irq_fini - deallocate internal structures of 'amdgpu_dm_irq'.
+ *
+ * This function should be called exactly once - during DM destruction.
+ *
+ */
+void amdgpu_dm_irq_fini(
+	struct amdgpu_device *adev);
+
+/**
+ * amdgpu_dm_irq_register_interrupt - register irq handler for Display block.
+ *
+ * @adev: AMD DRM device
+ * @int_params: parameters for the irq
+ * @ih: pointer to the irq hander function
+ * @handler_args: arguments which will be passed to ih
+ *
+ * Returns:
+ * 	IRQ Handler Index on success.
+ * 	NULL on failure.
+ *
+ * Cannot be called from an interrupt handler.
+ */
+void *amdgpu_dm_irq_register_interrupt(
+		struct amdgpu_device *adev,
+		struct dc_interrupt_params *int_params,
+		void (*ih)(void *),
+		void *handler_args);
+
+/**
+ * amdgpu_dm_irq_unregister_interrupt - unregister handler which was registered
+ *	by amdgpu_dm_irq_register_interrupt().
+ *
+ * @adev: AMD DRM device.
+ * @ih_index: irq handler index which was returned by
+ *	amdgpu_dm_irq_register_interrupt
+ */
+void amdgpu_dm_irq_unregister_interrupt(
+		struct amdgpu_device *adev,
+		enum dc_irq_source irq_source,
+		void *ih_index);
+
+void amdgpu_dm_irq_register_timer(
+	struct amdgpu_device *adev,
+	struct dc_timer_interrupt_params *int_params,
+	interrupt_handler ih,
+	void *args);
+
+/**
+ * amdgpu_dm_irq_handler
+ * Generic IRQ handler, calls all registered high irq work immediately, and
+ * schedules work for low irq
+ */
+int amdgpu_dm_irq_handler(
+		struct amdgpu_device *adev,
+		struct amdgpu_irq_src *source,
+		struct amdgpu_iv_entry *entry);
+
+void amdgpu_dm_set_irq_funcs(struct amdgpu_device *adev);
+
+void amdgpu_dm_hpd_init(struct amdgpu_device *adev);
+void amdgpu_dm_hpd_fini(struct amdgpu_device *adev);
+
+/**
+ * amdgpu_dm_irq_suspend - disable ASIC interrupt during suspend.
+ *
+ */
+int amdgpu_dm_irq_suspend(struct amdgpu_device *adev);
+
+/**
+ * amdgpu_dm_irq_resume_early - enable HPDRX ASIC interrupts during resume.
+ * amdgpu_dm_irq_resume - enable ASIC interrupt during resume.
+ *
+ */
+int amdgpu_dm_irq_resume_early(struct amdgpu_device *adev);
+int amdgpu_dm_irq_resume(struct amdgpu_device *adev);
+
+#endif /* __AMDGPU_DM_IRQ_H__ */
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
new file mode 100644
index 000000000000..e4d94d4c215d
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -0,0 +1,443 @@
+/*
+ * 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
+ *
+ */
+
+#include <linux/version.h>
+#include <drm/drm_atomic_helper.h>
+#include "dm_services.h"
+#include "amdgpu.h"
+#include "amdgpu_dm_types.h"
+#include "amdgpu_dm_mst_types.h"
+
+#include "dc.h"
+#include "dm_helpers.h"
+
+/* #define TRACE_DPCD */
+
+#ifdef TRACE_DPCD
+#define SIDE_BAND_MSG(address) (address >= DP_SIDEBAND_MSG_DOWN_REQ_BASE && address < DP_SINK_COUNT_ESI)
+
+static inline char *side_band_msg_type_to_str(uint32_t address)
+{
+	static char str[10] = {0};
+
+	if (address < DP_SIDEBAND_MSG_UP_REP_BASE)
+		strcpy(str, "DOWN_REQ");
+	else if (address < DP_SIDEBAND_MSG_DOWN_REP_BASE)
+		strcpy(str, "UP_REP");
+	else if (address < DP_SIDEBAND_MSG_UP_REQ_BASE)
+		strcpy(str, "DOWN_REP");
+	else
+		strcpy(str, "UP_REQ");
+
+	return str;
+}
+
+void log_dpcd(uint8_t type,
+		uint32_t address,
+		uint8_t *data,
+		uint32_t size,
+		bool res)
+{
+	DRM_DEBUG_KMS("Op: %s, addr: %04x, SideBand Msg: %s, Op res: %s\n",
+			(type == DP_AUX_NATIVE_READ) ||
+			(type == DP_AUX_I2C_READ) ?
+					"Read" : "Write",
+			address,
+			SIDE_BAND_MSG(address) ?
+					side_band_msg_type_to_str(address) : "Nop",
+			res ? "OK" : "Fail");
+
+	if (res) {
+		print_hex_dump(KERN_INFO, "Body: ", DUMP_PREFIX_NONE, 16, 1, data, size, false);
+	}
+}
+#endif
+
+static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
+{
+	struct pci_dev *pdev = to_pci_dev(aux->dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	struct amdgpu_device *adev = drm_dev->dev_private;
+	struct dc *dc = adev->dm.dc;
+	bool res;
+
+	switch (msg->request) {
+	case DP_AUX_NATIVE_READ:
+		res = dc_read_dpcd(
+			dc,
+			TO_DM_AUX(aux)->link_index,
+			msg->address,
+			msg->buffer,
+			msg->size);
+		break;
+	case DP_AUX_NATIVE_WRITE:
+		res = dc_write_dpcd(
+			dc,
+			TO_DM_AUX(aux)->link_index,
+			msg->address,
+			msg->buffer,
+			msg->size);
+		break;
+	default:
+		return 0;
+	}
+
+#ifdef TRACE_DPCD
+	log_dpcd(msg->request,
+			msg->address,
+			msg->buffer,
+			msg->size,
+			res);
+#endif
+
+	return msg->size;
+}
+
+static enum drm_connector_status
+dm_dp_mst_detect(struct drm_connector *connector, bool force)
+{
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+	struct amdgpu_connector *master = aconnector->mst_port;
+
+	enum drm_connector_status status =
+		drm_dp_mst_detect_port(
+			connector,
+			&master->mst_mgr,
+			aconnector->port);
+
+	/*
+	 * we do not want to make this connector connected until we have edid on
+	 * it
+	 */
+	if (status == connector_status_connected &&
+		!aconnector->port->cached_edid)
+		status = connector_status_disconnected;
+
+	return status;
+}
+
+static void
+dm_dp_mst_connector_destroy(struct drm_connector *connector)
+{
+	struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
+	struct amdgpu_encoder *amdgpu_encoder = amdgpu_connector->mst_encoder;
+
+	drm_encoder_cleanup(&amdgpu_encoder->base);
+	kfree(amdgpu_encoder);
+	drm_connector_cleanup(connector);
+	kfree(amdgpu_connector);
+}
+
+static const struct drm_connector_funcs dm_dp_mst_connector_funcs = {
+	.detect = dm_dp_mst_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = dm_dp_mst_connector_destroy,
+	.reset = amdgpu_dm_connector_funcs_reset,
+	.atomic_duplicate_state = amdgpu_dm_connector_atomic_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_set_property = amdgpu_dm_connector_atomic_set_property
+};
+
+static int dm_dp_mst_get_modes(struct drm_connector *connector)
+{
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+	int ret = 0;
+
+	ret = drm_add_edid_modes(&aconnector->base, aconnector->edid);
+
+	drm_edid_to_eld(&aconnector->base, aconnector->edid);
+
+	return ret;
+}
+
+static struct drm_encoder *dm_mst_best_encoder(struct drm_connector *connector)
+{
+	struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
+
+	return &amdgpu_connector->mst_encoder->base;
+}
+
+static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs = {
+	.get_modes = dm_dp_mst_get_modes,
+	.mode_valid = amdgpu_dm_connector_mode_valid,
+	.best_encoder = dm_mst_best_encoder,
+};
+
+static struct amdgpu_encoder *
+dm_dp_create_fake_mst_encoder(struct amdgpu_connector *connector)
+{
+	struct drm_device *dev = connector->base.dev;
+	struct amdgpu_device *adev = dev->dev_private;
+	struct amdgpu_encoder *amdgpu_encoder;
+	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);
+	amdgpu_encoder = kzalloc(sizeof(*amdgpu_encoder), GFP_KERNEL);
+	if (!amdgpu_encoder)
+		return NULL;
+
+	encoder = &amdgpu_encoder->base;
+	encoder->possible_crtcs = amdgpu_dm_get_encoder_crtc_mask(adev);
+
+	drm_encoder_init(
+		dev,
+		&amdgpu_encoder->base,
+		NULL,
+		DRM_MODE_ENCODER_DPMST,
+		NULL);
+
+	drm_encoder_helper_add(encoder, &amdgpu_dm_encoder_helper_funcs);
+
+	return amdgpu_encoder;
+}
+
+static struct drm_connector *dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
+							 struct drm_dp_mst_port *port,
+							 const char *pathprop)
+{
+	struct amdgpu_connector *master = container_of(mgr, struct amdgpu_connector, mst_mgr);
+	struct drm_device *dev = master->base.dev;
+	struct amdgpu_device *adev = dev->dev_private;
+	struct amdgpu_connector *aconnector;
+	struct drm_connector *connector;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		aconnector = to_amdgpu_connector(connector);
+		if (aconnector->mst_port == master
+				&& !aconnector->port) {
+			DRM_INFO("DM_MST: reusing connector: %p [id: %d] [master: %p]\n",
+						aconnector, connector->base.id, aconnector->mst_port);
+
+			aconnector->port = port;
+			drm_mode_connector_set_path_property(connector, pathprop);
+
+			drm_modeset_unlock(&dev->mode_config.connection_mutex);
+			return &aconnector->base;
+		}
+	}
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+	aconnector = kzalloc(sizeof(*aconnector), GFP_KERNEL);
+	if (!aconnector)
+		return NULL;
+
+	connector = &aconnector->base;
+	aconnector->port = port;
+	aconnector->mst_port = master;
+
+	if (drm_connector_init(
+		dev,
+		connector,
+		&dm_dp_mst_connector_funcs,
+		DRM_MODE_CONNECTOR_DisplayPort)) {
+		kfree(aconnector);
+		return NULL;
+	}
+	drm_connector_helper_add(connector, &dm_dp_mst_connector_helper_funcs);
+
+	amdgpu_dm_connector_init_helper(
+		&adev->dm,
+		aconnector,
+		DRM_MODE_CONNECTOR_DisplayPort,
+		master->dc_link,
+		master->connector_id);
+
+	aconnector->mst_encoder = dm_dp_create_fake_mst_encoder(master);
+
+	/*
+	 * TODO: understand why this one is needed
+	 */
+	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_mode_connector_set_path_property(connector, pathprop);
+
+	/*
+	 * Initialize connector state before adding the connectror to drm and
+	 * framebuffer lists
+	 */
+	amdgpu_dm_connector_funcs_reset(connector);
+
+	DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
+			aconnector, connector->base.id, aconnector->mst_port);
+
+	DRM_DEBUG_KMS(":%d\n", connector->base.id);
+
+	return connector;
+}
+
+static void dm_dp_destroy_mst_connector(
+	struct drm_dp_mst_topology_mgr *mgr,
+	struct drm_connector *connector)
+{
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+
+	DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
+				aconnector, connector->base.id, aconnector->mst_port);
+
+	aconnector->port = NULL;
+	if (aconnector->dc_sink) {
+		amdgpu_dm_remove_sink_from_freesync_module(connector);
+		dc_link_remove_remote_sink(aconnector->dc_link, aconnector->dc_sink);
+		dc_sink_release(aconnector->dc_sink);
+		aconnector->dc_sink = NULL;
+	}
+	if (aconnector->edid) {
+		kfree(aconnector->edid);
+		aconnector->edid = NULL;
+	}
+
+	drm_mode_connector_update_edid_property(
+			&aconnector->base,
+			NULL);
+}
+
+static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
+{
+	struct amdgpu_connector *master = container_of(mgr, struct amdgpu_connector, mst_mgr);
+	struct drm_device *dev = master->base.dev;
+	struct amdgpu_device *adev = dev->dev_private;
+	struct drm_connector *connector;
+	struct amdgpu_connector *aconnector;
+	struct edid *edid;
+
+	drm_modeset_lock_all(dev);
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		aconnector = to_amdgpu_connector(connector);
+		if (aconnector->port &&
+				aconnector->port->pdt != DP_PEER_DEVICE_NONE &&
+				aconnector->port->pdt != DP_PEER_DEVICE_MST_BRANCHING &&
+				!aconnector->dc_sink) {
+			/*
+			 * This is plug in case, where port has been created but
+			 * sink hasn't been created yet
+			 */
+			if (!aconnector->edid) {
+				struct dc_sink_init_data init_params = {
+						.link = aconnector->dc_link,
+						.sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST};
+				edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port);
+
+				if (!edid) {
+					drm_mode_connector_update_edid_property(
+						&aconnector->base,
+						NULL);
+					continue;
+				}
+
+				aconnector->edid = edid;
+
+				aconnector->dc_sink = dc_link_add_remote_sink(
+					aconnector->dc_link,
+					(uint8_t *)edid,
+					(edid->extensions + 1) * EDID_LENGTH,
+					&init_params);
+				if (aconnector->dc_sink)
+					amdgpu_dm_add_sink_to_freesync_module(
+							connector,
+							edid);
+
+				dm_restore_drm_connector_state(connector->dev, connector);
+			} else
+				edid = aconnector->edid;
+
+			DRM_DEBUG_KMS("edid retrieved %p\n", edid);
+
+			drm_mode_connector_update_edid_property(
+				&aconnector->base,
+				aconnector->edid);
+		}
+	}
+	drm_modeset_unlock_all(dev);
+
+	schedule_work(&adev->dm.mst_hotplug_work);
+}
+
+static void dm_dp_mst_register_connector(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct amdgpu_device *adev = dev->dev_private;
+	int i;
+
+	drm_modeset_lock_all(dev);
+	if (adev->mode_info.rfbdev) {
+		/*Do not add if already registered in past*/
+		for (i = 0; i < adev->mode_info.rfbdev->helper.connector_count; i++) {
+			if (adev->mode_info.rfbdev->helper.connector_info[i]->connector
+					== connector) {
+				drm_modeset_unlock_all(dev);
+				return;
+			}
+		}
+
+		drm_fb_helper_add_one_connector(&adev->mode_info.rfbdev->helper, connector);
+	}
+	else
+		DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
+
+	drm_modeset_unlock_all(dev);
+
+	drm_connector_register(connector);
+
+}
+
+static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {
+	.add_connector = dm_dp_add_mst_connector,
+	.destroy_connector = dm_dp_destroy_mst_connector,
+	.hotplug = dm_dp_mst_hotplug,
+	.register_connector = dm_dp_mst_register_connector
+};
+
+void amdgpu_dm_initialize_mst_connector(
+	struct amdgpu_display_manager *dm,
+	struct amdgpu_connector *aconnector)
+{
+	aconnector->dm_dp_aux.aux.name = "dmdc";
+	aconnector->dm_dp_aux.aux.dev = dm->adev->dev;
+	aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
+	aconnector->dm_dp_aux.link_index = aconnector->connector_id;
+
+	drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
+	aconnector->mst_mgr.cbs = &dm_mst_cbs;
+	drm_dp_mst_topology_mgr_init(
+		&aconnector->mst_mgr,
+		dm->adev->ddev,
+		&aconnector->dm_dp_aux.aux,
+		16,
+		4,
+		aconnector->connector_id);
+}
+
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
new file mode 100644
index 000000000000..6130d62ac65c
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
@@ -0,0 +1,36 @@
+/*
+ * 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_AMDGPU_DM_MST_TYPES_H__
+#define __DAL_AMDGPU_DM_MST_TYPES_H__
+
+struct amdgpu_display_manager;
+struct amdgpu_connector;
+
+void amdgpu_dm_initialize_mst_connector(
+	struct amdgpu_display_manager *dm,
+	struct amdgpu_connector *aconnector);
+
+#endif
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c
new file mode 100644
index 000000000000..9d5125951acd
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c
@@ -0,0 +1,463 @@
+/*
+ * Copyright 2015 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
+ *
+ */
+
+#include <linux/string.h>
+#include <linux/acpi.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/amdgpu_drm.h>
+#include "dm_services.h"
+#include "amdgpu.h"
+#include "amdgpu_dm.h"
+#include "amdgpu_dm_irq.h"
+#include "amdgpu_dm_types.h"
+#include "amdgpu_pm.h"
+
+#define dm_alloc(size) kzalloc(size, GFP_KERNEL)
+#define dm_realloc(ptr, size) krealloc(ptr, size, GFP_KERNEL)
+#define dm_free(ptr) kfree(ptr)
+
+/******************************************************************************
+ * IRQ Interfaces.
+ *****************************************************************************/
+
+void dal_register_timer_interrupt(
+	struct dc_context *ctx,
+	struct dc_timer_interrupt_params *int_params,
+	interrupt_handler ih,
+	void *args)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+
+	if (!adev || !int_params) {
+		DRM_ERROR("DM_IRQ: invalid input!\n");
+		return;
+	}
+
+	if (int_params->int_context != INTERRUPT_LOW_IRQ_CONTEXT) {
+		/* only low irq ctx is supported. */
+		DRM_ERROR("DM_IRQ: invalid context: %d!\n",
+				int_params->int_context);
+		return;
+	}
+
+	amdgpu_dm_irq_register_timer(adev, int_params, ih, args);
+}
+
+void dal_isr_acquire_lock(struct dc_context *ctx)
+{
+	/*TODO*/
+}
+
+void dal_isr_release_lock(struct dc_context *ctx)
+{
+	/*TODO*/
+}
+
+/******************************************************************************
+ * End-of-IRQ Interfaces.
+ *****************************************************************************/
+
+bool dm_get_platform_info(struct dc_context *ctx,
+			struct platform_info_params *params)
+{
+	/*TODO*/
+	return false;
+}
+
+bool dm_write_persistent_data(struct dc_context *ctx,
+		const struct dc_sink *sink,
+		const char *module_name,
+		const char *key_name,
+		void *params,
+		unsigned int size,
+		struct persistent_data_flag *flag)
+{
+	/*TODO implement*/
+	return false;
+}
+
+bool dm_read_persistent_data(struct dc_context *ctx,
+				const struct dc_sink *sink,
+				const char *module_name,
+				const char *key_name,
+				void *params,
+				unsigned int size,
+				struct persistent_data_flag *flag)
+{
+	/*TODO implement*/
+	return false;
+}
+
+void dm_delay_in_microseconds(struct dc_context *ctx,
+					unsigned int microSeconds)
+{
+	/*TODO implement*/
+	return;
+}
+
+/**** power component interfaces ****/
+
+bool dm_pp_pre_dce_clock_change(
+		struct dc_context *ctx,
+		struct dm_pp_gpu_clock_range *requested_state,
+		struct dm_pp_gpu_clock_range *actual_state)
+{
+	/*TODO*/
+	return false;
+}
+
+bool dm_pp_apply_safe_state(
+		const struct dc_context *ctx)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+
+	if (adev->pm.dpm_enabled) {
+		/* TODO: Does this require PreModeChange event to PPLIB? */
+	}
+
+	return true;
+}
+
+bool dm_pp_apply_display_requirements(
+		const struct dc_context *ctx,
+		const struct dm_pp_display_configuration *pp_display_cfg)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+
+	if (adev->pm.dpm_enabled) {
+
+		memset(&adev->pm.pm_display_cfg, 0,
+				sizeof(adev->pm.pm_display_cfg));
+
+		adev->pm.pm_display_cfg.cpu_cc6_disable =
+			pp_display_cfg->cpu_cc6_disable;
+
+		adev->pm.pm_display_cfg.cpu_pstate_disable =
+			pp_display_cfg->cpu_pstate_disable;
+
+		adev->pm.pm_display_cfg.cpu_pstate_separation_time =
+			pp_display_cfg->cpu_pstate_separation_time;
+
+		adev->pm.pm_display_cfg.nb_pstate_switch_disable =
+			pp_display_cfg->nb_pstate_switch_disable;
+
+		adev->pm.pm_display_cfg.num_display =
+				pp_display_cfg->display_count;
+		adev->pm.pm_display_cfg.num_path_including_non_display =
+				pp_display_cfg->display_count;
+
+		adev->pm.pm_display_cfg.min_core_set_clock =
+				pp_display_cfg->min_engine_clock_khz/10;
+		adev->pm.pm_display_cfg.min_core_set_clock_in_sr =
+				pp_display_cfg->min_engine_clock_deep_sleep_khz/10;
+		adev->pm.pm_display_cfg.min_mem_set_clock =
+				pp_display_cfg->min_memory_clock_khz/10;
+
+		adev->pm.pm_display_cfg.multi_monitor_in_sync =
+				pp_display_cfg->all_displays_in_sync;
+		adev->pm.pm_display_cfg.min_vblank_time =
+				pp_display_cfg->avail_mclk_switch_time_us;
+
+		adev->pm.pm_display_cfg.display_clk =
+				pp_display_cfg->disp_clk_khz/10;
+
+		adev->pm.pm_display_cfg.dce_tolerable_mclk_in_active_latency =
+				pp_display_cfg->avail_mclk_switch_time_in_disp_active_us;
+
+		adev->pm.pm_display_cfg.crtc_index = pp_display_cfg->crtc_index;
+		adev->pm.pm_display_cfg.line_time_in_us =
+				pp_display_cfg->line_time_in_us;
+
+		adev->pm.pm_display_cfg.vrefresh = pp_display_cfg->disp_configs[0].v_refresh;
+		adev->pm.pm_display_cfg.crossfire_display_index = -1;
+		adev->pm.pm_display_cfg.min_bus_bandwidth = 0;
+
+		/* TODO: complete implementation of
+		 * amd_powerplay_display_configuration_change().
+		 * Follow example of:
+		 * PHM_StoreDALConfigurationData - powerplay\hwmgr\hardwaremanager.c
+		 * PP_IRI_DisplayConfigurationChange - powerplay\eventmgr\iri.c */
+		amd_powerplay_display_configuration_change(
+				adev->powerplay.pp_handle,
+				&adev->pm.pm_display_cfg);
+
+		/* TODO: replace by a separate call to 'apply display cfg'? */
+		amdgpu_pm_compute_clocks(adev);
+	}
+
+	return true;
+}
+
+bool dc_service_get_system_clocks_range(
+		const struct dc_context *ctx,
+		struct dm_pp_gpu_clock_range *sys_clks)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+
+	/* Default values, in case PPLib is not compiled-in. */
+	sys_clks->mclk.max_khz = 800000;
+	sys_clks->mclk.min_khz = 800000;
+
+	sys_clks->sclk.max_khz = 600000;
+	sys_clks->sclk.min_khz = 300000;
+
+	if (adev->pm.dpm_enabled) {
+		sys_clks->mclk.max_khz = amdgpu_dpm_get_mclk(adev, false);
+		sys_clks->mclk.min_khz = amdgpu_dpm_get_mclk(adev, true);
+
+		sys_clks->sclk.max_khz = amdgpu_dpm_get_sclk(adev, false);
+		sys_clks->sclk.min_khz = amdgpu_dpm_get_sclk(adev, true);
+	}
+
+	return true;
+}
+
+static void get_default_clock_levels(
+		enum dm_pp_clock_type clk_type,
+		struct dm_pp_clock_levels *clks)
+{
+	uint32_t disp_clks_in_khz[6] = {
+			300000, 400000, 496560, 626090, 685720, 757900 };
+	uint32_t sclks_in_khz[6] = {
+			300000, 360000, 423530, 514290, 626090, 720000 };
+	uint32_t mclks_in_khz[2] = { 333000, 800000 };
+
+	switch (clk_type) {
+	case DM_PP_CLOCK_TYPE_DISPLAY_CLK:
+		clks->num_levels = 6;
+		memmove(clks->clocks_in_khz, disp_clks_in_khz,
+				sizeof(disp_clks_in_khz));
+		break;
+	case DM_PP_CLOCK_TYPE_ENGINE_CLK:
+		clks->num_levels = 6;
+		memmove(clks->clocks_in_khz, sclks_in_khz,
+				sizeof(sclks_in_khz));
+		break;
+	case DM_PP_CLOCK_TYPE_MEMORY_CLK:
+		clks->num_levels = 2;
+		memmove(clks->clocks_in_khz, mclks_in_khz,
+				sizeof(mclks_in_khz));
+		break;
+	default:
+		clks->num_levels = 0;
+		break;
+	}
+}
+
+static enum amd_pp_clock_type dc_to_pp_clock_type(
+		enum dm_pp_clock_type dm_pp_clk_type)
+{
+	enum amd_pp_clock_type amd_pp_clk_type = 0;
+
+	switch (dm_pp_clk_type) {
+	case DM_PP_CLOCK_TYPE_DISPLAY_CLK:
+		amd_pp_clk_type = amd_pp_disp_clock;
+		break;
+	case DM_PP_CLOCK_TYPE_ENGINE_CLK:
+		amd_pp_clk_type = amd_pp_sys_clock;
+		break;
+	case DM_PP_CLOCK_TYPE_MEMORY_CLK:
+		amd_pp_clk_type = amd_pp_mem_clock;
+		break;
+	default:
+		DRM_ERROR("DM_PPLIB: invalid clock type: %d!\n",
+				dm_pp_clk_type);
+		break;
+	}
+
+	return amd_pp_clk_type;
+}
+
+static void pp_to_dc_clock_levels(
+		const struct amd_pp_clocks *pp_clks,
+		struct dm_pp_clock_levels *dc_clks,
+		enum dm_pp_clock_type dc_clk_type)
+{
+	uint32_t i;
+
+	if (pp_clks->count > DM_PP_MAX_CLOCK_LEVELS) {
+		DRM_INFO("DM_PPLIB: Warning: %s clock: number of levels %d exceeds maximum of %d!\n",
+				DC_DECODE_PP_CLOCK_TYPE(dc_clk_type),
+				pp_clks->count,
+				DM_PP_MAX_CLOCK_LEVELS);
+
+		dc_clks->num_levels = DM_PP_MAX_CLOCK_LEVELS;
+	} else
+		dc_clks->num_levels = pp_clks->count;
+
+	DRM_INFO("DM_PPLIB: values for %s clock\n",
+			DC_DECODE_PP_CLOCK_TYPE(dc_clk_type));
+
+	for (i = 0; i < dc_clks->num_levels; i++) {
+		DRM_INFO("DM_PPLIB:\t %d\n", pp_clks->clock[i]);
+		/* translate 10kHz to kHz */
+		dc_clks->clocks_in_khz[i] = pp_clks->clock[i] * 10;
+	}
+}
+
+bool dm_pp_get_clock_levels_by_type(
+		const struct dc_context *ctx,
+		enum dm_pp_clock_type clk_type,
+		struct dm_pp_clock_levels *dc_clks)
+{
+	struct amdgpu_device *adev = ctx->driver_context;
+	void *pp_handle = adev->powerplay.pp_handle;
+	struct amd_pp_clocks pp_clks = { 0 };
+	struct amd_pp_simple_clock_info validation_clks = { 0 };
+	uint32_t i;
+
+	if (amd_powerplay_get_clock_by_type(pp_handle,
+			dc_to_pp_clock_type(clk_type), &pp_clks)) {
+		/* Error in pplib. Provide default values. */
+		get_default_clock_levels(clk_type, dc_clks);
+		return true;
+	}
+
+	pp_to_dc_clock_levels(&pp_clks, dc_clks, clk_type);
+
+	if (amd_powerplay_get_display_mode_validation_clocks(pp_handle,
+			&validation_clks)) {
+		/* Error in pplib. Provide default values. */
+		DRM_INFO("DM_PPLIB: Warning: using default validation clocks!\n");
+		validation_clks.engine_max_clock = 72000;
+		validation_clks.memory_max_clock = 80000;
+		validation_clks.level = 0;
+	}
+
+	DRM_INFO("DM_PPLIB: Validation clocks:\n");
+	DRM_INFO("DM_PPLIB:    engine_max_clock: %d\n",
+			validation_clks.engine_max_clock);
+	DRM_INFO("DM_PPLIB:    memory_max_clock: %d\n",
+			validation_clks.memory_max_clock);
+	DRM_INFO("DM_PPLIB:    level           : %d\n",
+			validation_clks.level);
+
+	/* Translate 10 kHz to kHz. */
+	validation_clks.engine_max_clock *= 10;
+	validation_clks.memory_max_clock *= 10;
+
+	/* Determine the highest non-boosted level from the Validation Clocks */
+	if (clk_type == DM_PP_CLOCK_TYPE_ENGINE_CLK) {
+		for (i = 0; i < dc_clks->num_levels; i++) {
+			if (dc_clks->clocks_in_khz[i] > validation_clks.engine_max_clock) {
+				/* This clock is higher the validation clock.
+				 * Than means the previous one is the highest
+				 * non-boosted one. */
+				DRM_INFO("DM_PPLIB: reducing engine clock level from %d to %d\n",
+						dc_clks->num_levels, i + 1);
+				dc_clks->num_levels = i;
+				break;
+			}
+		}
+	} else if (clk_type == DM_PP_CLOCK_TYPE_MEMORY_CLK) {
+		for (i = 0; i < dc_clks->num_levels; i++) {
+			if (dc_clks->clocks_in_khz[i] > validation_clks.memory_max_clock) {
+				DRM_INFO("DM_PPLIB: reducing memory clock level from %d to %d\n",
+						dc_clks->num_levels, i + 1);
+				dc_clks->num_levels = i;
+				break;
+			}
+		}
+	}
+
+	return true;
+}
+
+bool dm_pp_get_clock_levels_by_type_with_latency(
+	const struct dc_context *ctx,
+	enum dm_pp_clock_type clk_type,
+	struct dm_pp_clock_levels_with_latency *clk_level_info)
+{
+	/* TODO: to be implemented */
+	return false;
+}
+
+bool dm_pp_get_clock_levels_by_type_with_voltage(
+	const struct dc_context *ctx,
+	enum dm_pp_clock_type clk_type,
+	struct dm_pp_clock_levels_with_voltage *clk_level_info)
+{
+	/* TODO: to be implemented */
+	return false;
+}
+
+bool dm_pp_notify_wm_clock_changes(
+	const struct dc_context *ctx,
+	struct dm_pp_wm_sets_with_clock_ranges *wm_with_clock_ranges)
+{
+	/* TODO: to be implemented */
+	return false;
+}
+
+bool dm_pp_apply_power_level_change_request(
+	const struct dc_context *ctx,
+	struct dm_pp_power_level_change_request *level_change_req)
+{
+	/* TODO: to be implemented */
+	return false;
+}
+
+bool dm_pp_apply_clock_for_voltage_request(
+	const struct dc_context *ctx,
+	struct dm_pp_clock_for_voltage_req *clock_for_voltage_req)
+{
+	/* TODO: to be implemented */
+	return false;
+}
+
+bool dm_pp_get_static_clocks(
+	const struct dc_context *ctx,
+	struct dm_pp_static_clock_info *static_clk_info)
+{
+	/* TODO: to be implemented */
+	return false;
+}
+
+/**** end of power component interfaces ****/
+
+/* Calls to notification */
+
+void dal_notify_setmode_complete(struct dc_context *ctx,
+	uint32_t h_total,
+	uint32_t v_total,
+	uint32_t h_active,
+	uint32_t v_active,
+	uint32_t pix_clk_in_khz)
+{
+	/*TODO*/
+}
+/* End of calls to notification */
+
+long dm_get_pid(void)
+{
+	return current->pid;
+}
+
+long dm_get_tgid(void)
+{
+	return current->tgid;
+}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
new file mode 100644
index 000000000000..c073f4558cf4
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -0,0 +1,3150 @@
+/*
+ * Copyright 2012-13 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
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/version.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_edid.h>
+
+#include "amdgpu.h"
+#include "amdgpu_pm.h"
+#include "dm_services_types.h"
+
+// We need to #undef FRAME_SIZE and DEPRECATED because they conflict
+// with ptrace-abi.h's #define's of them.
+#undef FRAME_SIZE
+#undef DEPRECATED
+
+#include "dc.h"
+
+#include "amdgpu_dm_types.h"
+#include "amdgpu_dm_mst_types.h"
+
+#include "modules/inc/mod_freesync.h"
+
+struct dm_connector_state {
+	struct drm_connector_state base;
+
+	enum amdgpu_rmx_type scaling;
+	uint8_t underscan_vborder;
+	uint8_t underscan_hborder;
+	bool underscan_enable;
+};
+
+#define to_dm_connector_state(x)\
+	container_of((x), struct dm_connector_state, base)
+
+
+void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+	kfree(encoder);
+}
+
+static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = {
+	.destroy = amdgpu_dm_encoder_destroy,
+};
+
+static void dm_set_cursor(
+	struct amdgpu_crtc *amdgpu_crtc,
+	uint64_t gpu_addr,
+	uint32_t width,
+	uint32_t height)
+{
+	struct dc_cursor_attributes attributes;
+	amdgpu_crtc->cursor_width = width;
+	amdgpu_crtc->cursor_height = height;
+
+	attributes.address.high_part = upper_32_bits(gpu_addr);
+	attributes.address.low_part  = lower_32_bits(gpu_addr);
+	attributes.width             = width;
+	attributes.height            = height;
+	attributes.x_hot             = 0;
+	attributes.y_hot             = 0;
+	attributes.color_format      = CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA;
+	attributes.rotation_angle    = 0;
+	attributes.attribute_flags.value = 0;
+
+	if (!dc_target_set_cursor_attributes(
+				amdgpu_crtc->target,
+				&attributes)) {
+		DRM_ERROR("DC failed to set cursor attributes\n");
+	}
+}
+
+static int dm_crtc_unpin_cursor_bo_old(
+	struct amdgpu_crtc *amdgpu_crtc)
+{
+	struct amdgpu_bo *robj;
+	int ret = 0;
+
+	if (NULL != amdgpu_crtc && NULL != amdgpu_crtc->cursor_bo) {
+		robj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
+
+		ret = amdgpu_bo_reserve(robj, false);
+
+		if (likely(ret == 0)) {
+			ret = amdgpu_bo_unpin(robj);
+
+			if (unlikely(ret != 0)) {
+				DRM_ERROR(
+					"%s: unpin failed (ret=%d), bo %p\n",
+					__func__,
+					ret,
+					amdgpu_crtc->cursor_bo);
+			}
+
+			amdgpu_bo_unreserve(robj);
+		} else {
+			DRM_ERROR(
+				"%s: reserve failed (ret=%d), bo %p\n",
+				__func__,
+				ret,
+				amdgpu_crtc->cursor_bo);
+		}
+
+		drm_gem_object_unreference_unlocked(amdgpu_crtc->cursor_bo);
+		amdgpu_crtc->cursor_bo = NULL;
+	}
+
+	return ret;
+}
+
+static int dm_crtc_pin_cursor_bo_new(
+	struct drm_crtc *crtc,
+	struct drm_file *file_priv,
+	uint32_t handle,
+	struct amdgpu_bo **ret_obj)
+{
+	struct amdgpu_crtc *amdgpu_crtc;
+	struct amdgpu_bo *robj;
+	struct drm_gem_object *obj;
+	int ret = -EINVAL;
+
+	if (NULL != crtc) {
+		struct drm_device *dev = crtc->dev;
+		struct amdgpu_device *adev = dev->dev_private;
+		uint64_t gpu_addr;
+
+		amdgpu_crtc = to_amdgpu_crtc(crtc);
+
+		obj = drm_gem_object_lookup(file_priv, handle);
+
+		if (!obj) {
+			DRM_ERROR(
+				"Cannot find cursor object %x for crtc %d\n",
+				handle,
+				amdgpu_crtc->crtc_id);
+			goto release;
+		}
+		robj = gem_to_amdgpu_bo(obj);
+
+		ret  = amdgpu_bo_reserve(robj, false);
+
+		if (unlikely(ret != 0)) {
+			drm_gem_object_unreference_unlocked(obj);
+		DRM_ERROR("dm_crtc_pin_cursor_bo_new ret %x, handle %x\n",
+				 ret, handle);
+			goto release;
+		}
+
+		ret = amdgpu_bo_pin_restricted(robj, AMDGPU_GEM_DOMAIN_VRAM, 0,
+						adev->mc.visible_vram_size,
+						&gpu_addr);
+
+		if (ret == 0) {
+			amdgpu_crtc->cursor_addr = gpu_addr;
+			*ret_obj  = robj;
+		}
+		amdgpu_bo_unreserve(robj);
+		if (ret)
+			drm_gem_object_unreference_unlocked(obj);
+
+	}
+release:
+
+	return ret;
+}
+
+static int dm_crtc_cursor_set(
+	struct drm_crtc *crtc,
+	struct drm_file *file_priv,
+	uint32_t handle,
+	uint32_t width,
+	uint32_t height)
+{
+	struct amdgpu_bo *new_cursor_bo;
+	struct dc_cursor_position position;
+
+	int ret;
+
+	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+
+	ret		= EINVAL;
+	new_cursor_bo	= NULL;
+
+	DRM_DEBUG_KMS(
+	"%s: crtc_id=%d with handle %d and size %d to %d, bo_object %p\n",
+		__func__,
+		amdgpu_crtc->crtc_id,
+		handle,
+		width,
+		height,
+		amdgpu_crtc->cursor_bo);
+
+	if (!handle) {
+		/* turn off cursor */
+		position.enable = false;
+		position.x = 0;
+		position.y = 0;
+		position.hot_spot_enable = false;
+
+		if (amdgpu_crtc->target) {
+			/*set cursor visible false*/
+			dc_target_set_cursor_position(
+				amdgpu_crtc->target,
+				&position);
+		}
+		/*unpin old cursor buffer and update cache*/
+		ret = dm_crtc_unpin_cursor_bo_old(amdgpu_crtc);
+		goto release;
+
+	}
+
+	if ((width > amdgpu_crtc->max_cursor_width) ||
+		(height > amdgpu_crtc->max_cursor_height)) {
+		DRM_ERROR(
+			"%s: bad cursor width or height %d x %d\n",
+			__func__,
+			width,
+			height);
+		goto release;
+	}
+	/*try to pin new cursor bo*/
+	ret = dm_crtc_pin_cursor_bo_new(crtc, file_priv, handle, &new_cursor_bo);
+	/*if map not successful then return an error*/
+	if (ret)
+		goto release;
+
+	/*program new cursor bo to hardware*/
+	dm_set_cursor(amdgpu_crtc, amdgpu_crtc->cursor_addr, width, height);
+
+	/*un map old, not used anymore cursor bo ,
+	 * return memory and mapping back */
+	dm_crtc_unpin_cursor_bo_old(amdgpu_crtc);
+
+	/*assign new cursor bo to our internal cache*/
+	amdgpu_crtc->cursor_bo = &new_cursor_bo->gem_base;
+
+release:
+	return ret;
+
+}
+
+static int dm_crtc_cursor_move(struct drm_crtc *crtc,
+				     int x, int y)
+{
+	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+	int xorigin = 0, yorigin = 0;
+	struct dc_cursor_position position;
+
+	/* avivo cursor are offset into the total surface */
+	x += crtc->primary->state->src_x >> 16;
+	y += crtc->primary->state->src_y >> 16;
+
+	/*
+	 * TODO: for cursor debugging unguard the following
+	 */
+#if 0
+	DRM_DEBUG_KMS(
+		"%s: x %d y %d c->x %d c->y %d\n",
+		__func__,
+		x,
+		y,
+		crtc->x,
+		crtc->y);
+#endif
+
+	if (x < 0) {
+		xorigin = min(-x, amdgpu_crtc->max_cursor_width - 1);
+		x = 0;
+	}
+	if (y < 0) {
+		yorigin = min(-y, amdgpu_crtc->max_cursor_height - 1);
+		y = 0;
+	}
+
+	position.enable = true;
+	position.x = x;
+	position.y = y;
+
+	position.hot_spot_enable = true;
+	position.x_hotspot = xorigin;
+	position.y_hotspot = yorigin;
+
+	if (amdgpu_crtc->target) {
+		if (!dc_target_set_cursor_position(
+					amdgpu_crtc->target,
+					&position)) {
+			DRM_ERROR("DC failed to set cursor position\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static void dm_crtc_cursor_reset(struct drm_crtc *crtc)
+{
+	struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+
+	DRM_DEBUG_KMS(
+		"%s: with cursor_bo %p\n",
+		__func__,
+		amdgpu_crtc->cursor_bo);
+
+	if (amdgpu_crtc->cursor_bo && amdgpu_crtc->target) {
+		dm_set_cursor(
+		amdgpu_crtc,
+		amdgpu_crtc->cursor_addr,
+		amdgpu_crtc->cursor_width,
+		amdgpu_crtc->cursor_height);
+	}
+}
+static bool fill_rects_from_plane_state(
+	const struct drm_plane_state *state,
+	struct dc_surface *surface)
+{
+	surface->src_rect.x = state->src_x >> 16;
+	surface->src_rect.y = state->src_y >> 16;
+	/*we ignore for now mantissa and do not to deal with floating pixels :(*/
+	surface->src_rect.width = state->src_w >> 16;
+
+	if (surface->src_rect.width == 0)
+		return false;
+
+	surface->src_rect.height = state->src_h >> 16;
+	if (surface->src_rect.height == 0)
+		return false;
+
+	surface->dst_rect.x = state->crtc_x;
+	surface->dst_rect.y = state->crtc_y;
+
+	if (state->crtc_w == 0)
+		return false;
+
+	surface->dst_rect.width = state->crtc_w;
+
+	if (state->crtc_h == 0)
+		return false;
+
+	surface->dst_rect.height = state->crtc_h;
+
+	surface->clip_rect = surface->dst_rect;
+
+	switch (state->rotation & DRM_MODE_ROTATE_MASK) {
+	case DRM_MODE_ROTATE_0:
+		surface->rotation = ROTATION_ANGLE_0;
+		break;
+	case DRM_MODE_ROTATE_90:
+		surface->rotation = ROTATION_ANGLE_90;
+		break;
+	case DRM_MODE_ROTATE_180:
+		surface->rotation = ROTATION_ANGLE_180;
+		break;
+	case DRM_MODE_ROTATE_270:
+		surface->rotation = ROTATION_ANGLE_270;
+		break;
+	default:
+		surface->rotation = ROTATION_ANGLE_0;
+		break;
+	}
+
+	return true;
+}
+static bool get_fb_info(
+	const struct amdgpu_framebuffer *amdgpu_fb,
+	uint64_t *tiling_flags,
+	uint64_t *fb_location)
+{
+	struct amdgpu_bo *rbo = gem_to_amdgpu_bo(amdgpu_fb->obj);
+	int r = amdgpu_bo_reserve(rbo, false);
+	if (unlikely(r != 0)){
+		DRM_ERROR("Unable to reserve buffer\n");
+		return false;
+	}
+
+	if (fb_location)
+		*fb_location = amdgpu_bo_gpu_offset(rbo);
+
+	if (tiling_flags)
+		amdgpu_bo_get_tiling_flags(rbo, tiling_flags);
+
+	amdgpu_bo_unreserve(rbo);
+
+	return true;
+}
+static void fill_plane_attributes_from_fb(
+	struct dc_surface *surface,
+	const struct amdgpu_framebuffer *amdgpu_fb, bool addReq)
+{
+	uint64_t tiling_flags;
+	uint64_t fb_location = 0;
+	const struct drm_framebuffer *fb = &amdgpu_fb->base;
+	struct drm_format_name_buf format_name;
+
+	get_fb_info(
+		amdgpu_fb,
+		&tiling_flags,
+		addReq == true ? &fb_location:NULL);
+
+	surface->address.type                = PLN_ADDR_TYPE_GRAPHICS;
+	surface->address.grph.addr.low_part  = lower_32_bits(fb_location);
+	surface->address.grph.addr.high_part = upper_32_bits(fb_location);
+
+	switch (fb->format->format) {
+	case DRM_FORMAT_C8:
+		surface->format = SURFACE_PIXEL_FORMAT_GRPH_PALETA_256_COLORS;
+		break;
+	case DRM_FORMAT_RGB565:
+		surface->format = SURFACE_PIXEL_FORMAT_GRPH_RGB565;
+		break;
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+		surface->format = SURFACE_PIXEL_FORMAT_GRPH_ARGB8888;
+		break;
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ARGB2101010:
+		surface->format = SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010;
+		break;
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_ABGR2101010:
+		surface->format = SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010;
+		break;
+	default:
+		DRM_ERROR("Unsupported screen format %s\n",
+		          drm_get_format_name(fb->format->format, &format_name));
+		return;
+	}
+
+	memset(&surface->tiling_info, 0, sizeof(surface->tiling_info));
+
+	if (AMDGPU_TILING_GET(tiling_flags, ARRAY_MODE) == DC_ARRAY_2D_TILED_THIN1)
+	{
+		unsigned bankw, bankh, mtaspect, tile_split, num_banks;
+
+		bankw = AMDGPU_TILING_GET(tiling_flags, BANK_WIDTH);
+		bankh = AMDGPU_TILING_GET(tiling_flags, BANK_HEIGHT);
+		mtaspect = AMDGPU_TILING_GET(tiling_flags, MACRO_TILE_ASPECT);
+		tile_split = AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT);
+		num_banks = AMDGPU_TILING_GET(tiling_flags, NUM_BANKS);
+
+		/* XXX fix me for VI */
+		surface->tiling_info.gfx8.num_banks = num_banks;
+		surface->tiling_info.gfx8.array_mode =
+				DC_ARRAY_2D_TILED_THIN1;
+		surface->tiling_info.gfx8.tile_split = tile_split;
+		surface->tiling_info.gfx8.bank_width = bankw;
+		surface->tiling_info.gfx8.bank_height = bankh;
+		surface->tiling_info.gfx8.tile_aspect = mtaspect;
+		surface->tiling_info.gfx8.tile_mode =
+				DC_ADDR_SURF_MICRO_TILING_DISPLAY;
+	} else if (AMDGPU_TILING_GET(tiling_flags, ARRAY_MODE)
+			== DC_ARRAY_1D_TILED_THIN1) {
+		surface->tiling_info.gfx8.array_mode = DC_ARRAY_1D_TILED_THIN1;
+	}
+
+	surface->tiling_info.gfx8.pipe_config =
+			AMDGPU_TILING_GET(tiling_flags, PIPE_CONFIG);
+
+	surface->plane_size.grph.surface_size.x = 0;
+	surface->plane_size.grph.surface_size.y = 0;
+	surface->plane_size.grph.surface_size.width = fb->width;
+	surface->plane_size.grph.surface_size.height = fb->height;
+	surface->plane_size.grph.surface_pitch =
+		fb->pitches[0] / fb->format->cpp[0];
+
+	surface->visible = true;
+	surface->scaling_quality.h_taps_c = 0;
+	surface->scaling_quality.v_taps_c = 0;
+
+	/* TODO: unhardcode */
+	surface->color_space = COLOR_SPACE_SRGB;
+	/* is this needed? is surface zeroed at allocation? */
+	surface->scaling_quality.h_taps = 0;
+	surface->scaling_quality.v_taps = 0;
+	surface->stereo_format = PLANE_STEREO_FORMAT_NONE;
+
+}
+
+#define NUM_OF_RAW_GAMMA_RAMP_RGB_256 256
+
+static void fill_gamma_from_crtc(
+	const struct drm_crtc *crtc,
+	struct dc_surface *dc_surface)
+{
+	int i;
+	struct dc_gamma *gamma;
+	struct drm_crtc_state *state = crtc->state;
+	struct drm_color_lut *lut = (struct drm_color_lut *) state->gamma_lut->data;
+
+	gamma = dc_create_gamma();
+
+	if (gamma == NULL)
+		return;
+
+	for (i = 0; i < NUM_OF_RAW_GAMMA_RAMP_RGB_256; i++) {
+		gamma->gamma_ramp_rgb256x3x16.red[i] = lut[i].red;
+		gamma->gamma_ramp_rgb256x3x16.green[i] = lut[i].green;
+		gamma->gamma_ramp_rgb256x3x16.blue[i] = lut[i].blue;
+	}
+
+	gamma->type = GAMMA_RAMP_RBG256X3X16;
+	gamma->size = sizeof(gamma->gamma_ramp_rgb256x3x16);
+
+	dc_surface->gamma_correction = gamma;
+}
+
+static void fill_plane_attributes(
+			struct dc_surface *surface,
+			struct drm_plane_state *state, bool addrReq)
+{
+	const struct amdgpu_framebuffer *amdgpu_fb =
+		to_amdgpu_framebuffer(state->fb);
+	const struct drm_crtc *crtc = state->crtc;
+
+	fill_rects_from_plane_state(state, surface);
+	fill_plane_attributes_from_fb(
+		surface,
+		amdgpu_fb,
+		addrReq);
+
+	/* In case of gamma set, update gamma value */
+	if (state->crtc->state->gamma_lut) {
+		fill_gamma_from_crtc(crtc, surface);
+	}
+}
+
+/*****************************************************************************/
+
+struct amdgpu_connector *aconnector_from_drm_crtc_id(
+		const struct drm_crtc *crtc)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_connector *connector;
+	struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+	struct amdgpu_connector *aconnector;
+
+	list_for_each_entry(connector,
+			&dev->mode_config.connector_list, head)	{
+
+		aconnector = to_amdgpu_connector(connector);
+
+		if (aconnector->base.state->crtc != &acrtc->base)
+			continue;
+
+		/* Found the connector */
+		return aconnector;
+	}
+
+	/* If we get here, not found. */
+	return NULL;
+}
+
+static void update_stream_scaling_settings(
+		const struct drm_display_mode *mode,
+		const struct dm_connector_state *dm_state,
+		const struct dc_stream *stream)
+{
+	struct amdgpu_device *adev = dm_state->base.crtc->dev->dev_private;
+	enum amdgpu_rmx_type rmx_type;
+
+	struct rect src = { 0 }; /* viewport in target space*/
+	struct rect dst = { 0 }; /* stream addressable area */
+
+	/* Full screen scaling by default */
+	src.width = mode->hdisplay;
+	src.height = mode->vdisplay;
+	dst.width = stream->timing.h_addressable;
+	dst.height = stream->timing.v_addressable;
+
+	rmx_type = dm_state->scaling;
+	if (rmx_type == RMX_ASPECT || rmx_type == RMX_OFF) {
+		if (src.width * dst.height <
+				src.height * dst.width) {
+			/* height needs less upscaling/more downscaling */
+			dst.width = src.width *
+					dst.height / src.height;
+		} else {
+			/* width needs less upscaling/more downscaling */
+			dst.height = src.height *
+					dst.width / src.width;
+		}
+	} else if (rmx_type == RMX_CENTER) {
+		dst = src;
+	}
+
+	dst.x = (stream->timing.h_addressable - dst.width) / 2;
+	dst.y = (stream->timing.v_addressable - dst.height) / 2;
+
+	if (dm_state->underscan_enable) {
+		dst.x += dm_state->underscan_hborder / 2;
+		dst.y += dm_state->underscan_vborder / 2;
+		dst.width -= dm_state->underscan_hborder;
+		dst.height -= dm_state->underscan_vborder;
+	}
+
+	adev->dm.dc->stream_funcs.stream_update_scaling(adev->dm.dc, stream, &src, &dst);
+
+	DRM_DEBUG_KMS("Destination Rectangle x:%d  y:%d  width:%d  height:%d\n",
+			dst.x, dst.y, dst.width, dst.height);
+
+}
+
+static void dm_dc_surface_commit(
+		struct dc *dc,
+		struct drm_crtc *crtc)
+{
+	struct dc_surface *dc_surface;
+	const struct dc_surface *dc_surfaces[1];
+	const struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+	struct dc_target *dc_target = acrtc->target;
+
+	if (!dc_target) {
+		dm_error(
+			"%s: Failed to obtain target on crtc (%d)!\n",
+			__func__,
+			acrtc->crtc_id);
+		goto fail;
+	}
+
+	dc_surface = dc_create_surface(dc);
+
+	if (!dc_surface) {
+		dm_error(
+			"%s: Failed to create a surface!\n",
+			__func__);
+		goto fail;
+	}
+
+	/* Surface programming */
+	fill_plane_attributes(dc_surface, crtc->primary->state, true);
+
+	dc_surfaces[0] = dc_surface;
+
+	if (false == dc_commit_surfaces_to_target(
+			dc,
+			dc_surfaces,
+			1,
+			dc_target)) {
+		dm_error(
+			"%s: Failed to attach surface!\n",
+			__func__);
+	}
+
+	dc_surface_release(dc_surface);
+fail:
+	return;
+}
+
+static enum dc_color_depth convert_color_depth_from_display_info(
+		const struct drm_connector *connector)
+{
+	uint32_t bpc = connector->display_info.bpc;
+
+	/* Limited color depth to 8bit
+	 * TODO: Still need to handle deep color*/
+	if (bpc > 8)
+		bpc = 8;
+
+	switch (bpc) {
+	case 0:
+		/* Temporary Work around, DRM don't parse color depth for
+		 * EDID revision before 1.4
+		 * TODO: Fix edid parsing
+		 */
+		return COLOR_DEPTH_888;
+	case 6:
+		return COLOR_DEPTH_666;
+	case 8:
+		return COLOR_DEPTH_888;
+	case 10:
+		return COLOR_DEPTH_101010;
+	case 12:
+		return COLOR_DEPTH_121212;
+	case 14:
+		return COLOR_DEPTH_141414;
+	case 16:
+		return COLOR_DEPTH_161616;
+	default:
+		return COLOR_DEPTH_UNDEFINED;
+	}
+}
+
+static enum dc_aspect_ratio get_aspect_ratio(
+		const struct drm_display_mode *mode_in)
+{
+	int32_t width = mode_in->crtc_hdisplay * 9;
+	int32_t height = mode_in->crtc_vdisplay * 16;
+	if ((width - height) < 10 && (width - height) > -10)
+		return ASPECT_RATIO_16_9;
+	else
+		return ASPECT_RATIO_4_3;
+}
+
+static enum dc_color_space get_output_color_space(
+				const struct dc_crtc_timing *dc_crtc_timing)
+{
+	enum dc_color_space color_space = COLOR_SPACE_SRGB;
+
+	switch (dc_crtc_timing->pixel_encoding)	{
+	case PIXEL_ENCODING_YCBCR422:
+	case PIXEL_ENCODING_YCBCR444:
+	case PIXEL_ENCODING_YCBCR420:
+	{
+		/*
+		 * 27030khz is the separation point between HDTV and SDTV
+		 * according to HDMI spec, we use YCbCr709 and YCbCr601
+		 * respectively
+		 */
+		if (dc_crtc_timing->pix_clk_khz > 27030) {
+			if (dc_crtc_timing->flags.Y_ONLY)
+				color_space =
+					COLOR_SPACE_YCBCR709_LIMITED;
+			else
+				color_space = COLOR_SPACE_YCBCR709;
+		} else {
+			if (dc_crtc_timing->flags.Y_ONLY)
+				color_space =
+					COLOR_SPACE_YCBCR601_LIMITED;
+			else
+				color_space = COLOR_SPACE_YCBCR601;
+		}
+
+	}
+	break;
+	case PIXEL_ENCODING_RGB:
+		color_space = COLOR_SPACE_SRGB;
+		break;
+
+	default:
+		WARN_ON(1);
+		break;
+	}
+
+	return color_space;
+}
+
+/*****************************************************************************/
+
+static void fill_stream_properties_from_drm_display_mode(
+	struct dc_stream *stream,
+	const struct drm_display_mode *mode_in,
+	const struct drm_connector *connector)
+{
+	struct dc_crtc_timing *timing_out = &stream->timing;
+	memset(timing_out, 0, sizeof(struct dc_crtc_timing));
+
+	timing_out->h_border_left = 0;
+	timing_out->h_border_right = 0;
+	timing_out->v_border_top = 0;
+	timing_out->v_border_bottom = 0;
+	/* TODO: un-hardcode */
+
+	if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444)
+			&& stream->sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A)
+		timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444;
+	else
+		timing_out->pixel_encoding = PIXEL_ENCODING_RGB;
+
+	timing_out->timing_3d_format = TIMING_3D_FORMAT_NONE;
+	timing_out->display_color_depth = convert_color_depth_from_display_info(
+			connector);
+	timing_out->scan_type = SCANNING_TYPE_NODATA;
+	timing_out->hdmi_vic = 0;
+	timing_out->vic = drm_match_cea_mode(mode_in);
+
+	timing_out->h_addressable = mode_in->crtc_hdisplay;
+	timing_out->h_total = mode_in->crtc_htotal;
+	timing_out->h_sync_width =
+		mode_in->crtc_hsync_end - mode_in->crtc_hsync_start;
+	timing_out->h_front_porch =
+		mode_in->crtc_hsync_start - mode_in->crtc_hdisplay;
+	timing_out->v_total = mode_in->crtc_vtotal;
+	timing_out->v_addressable = mode_in->crtc_vdisplay;
+	timing_out->v_front_porch =
+		mode_in->crtc_vsync_start - mode_in->crtc_vdisplay;
+	timing_out->v_sync_width =
+		mode_in->crtc_vsync_end - mode_in->crtc_vsync_start;
+	timing_out->pix_clk_khz = mode_in->crtc_clock;
+	timing_out->aspect_ratio = get_aspect_ratio(mode_in);
+	if (mode_in->flags & DRM_MODE_FLAG_PHSYNC)
+		timing_out->flags.HSYNC_POSITIVE_POLARITY = 1;
+	if (mode_in->flags & DRM_MODE_FLAG_PVSYNC)
+		timing_out->flags.VSYNC_POSITIVE_POLARITY = 1;
+
+	stream->output_color_space = get_output_color_space(timing_out);
+
+}
+
+static void fill_audio_info(
+	struct audio_info *audio_info,
+	const struct drm_connector *drm_connector,
+	const struct dc_sink *dc_sink)
+{
+	int i = 0;
+	int cea_revision = 0;
+	const struct dc_edid_caps *edid_caps = &dc_sink->edid_caps;
+
+	audio_info->manufacture_id = edid_caps->manufacturer_id;
+	audio_info->product_id = edid_caps->product_id;
+
+	cea_revision = drm_connector->display_info.cea_rev;
+
+	while (i < AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS &&
+		edid_caps->display_name[i]) {
+		audio_info->display_name[i] = edid_caps->display_name[i];
+		i++;
+	}
+
+	if(cea_revision >= 3) {
+		audio_info->mode_count = edid_caps->audio_mode_count;
+
+		for (i = 0; i < audio_info->mode_count; ++i) {
+			audio_info->modes[i].format_code =
+					(enum audio_format_code)
+					(edid_caps->audio_modes[i].format_code);
+			audio_info->modes[i].channel_count =
+					edid_caps->audio_modes[i].channel_count;
+			audio_info->modes[i].sample_rates.all =
+					edid_caps->audio_modes[i].sample_rate;
+			audio_info->modes[i].sample_size =
+					edid_caps->audio_modes[i].sample_size;
+		}
+	}
+
+	audio_info->flags.all = edid_caps->speaker_flags;
+
+	/* TODO: We only check for the progressive mode, check for interlace mode too */
+	if(drm_connector->latency_present[0]) {
+		audio_info->video_latency = drm_connector->video_latency[0];
+		audio_info->audio_latency = drm_connector->audio_latency[0];
+	}
+
+	/* TODO: For DP, video and audio latency should be calculated from DPCD caps */
+
+}
+
+static void copy_crtc_timing_for_drm_display_mode(
+		const struct drm_display_mode *src_mode,
+		struct drm_display_mode *dst_mode)
+{
+	dst_mode->crtc_hdisplay = src_mode->crtc_hdisplay;
+	dst_mode->crtc_vdisplay = src_mode->crtc_vdisplay;
+	dst_mode->crtc_clock = src_mode->crtc_clock;
+	dst_mode->crtc_hblank_start = src_mode->crtc_hblank_start;
+	dst_mode->crtc_hblank_end = src_mode->crtc_hblank_end;
+	dst_mode->crtc_hsync_start=  src_mode->crtc_hsync_start;
+	dst_mode->crtc_hsync_end = src_mode->crtc_hsync_end;
+	dst_mode->crtc_htotal = src_mode->crtc_htotal;
+	dst_mode->crtc_hskew = src_mode->crtc_hskew;
+	dst_mode->crtc_vblank_start = src_mode->crtc_vblank_start;;
+	dst_mode->crtc_vblank_end = src_mode->crtc_vblank_end;;
+	dst_mode->crtc_vsync_start = src_mode->crtc_vsync_start;;
+	dst_mode->crtc_vsync_end = src_mode->crtc_vsync_end;;
+	dst_mode->crtc_vtotal = src_mode->crtc_vtotal;;
+}
+
+static void decide_crtc_timing_for_drm_display_mode(
+		struct drm_display_mode *drm_mode,
+		const struct drm_display_mode *native_mode,
+		bool scale_enabled)
+{
+	if (scale_enabled) {
+		copy_crtc_timing_for_drm_display_mode(native_mode, drm_mode);
+	} else if (native_mode->clock == drm_mode->clock &&
+			native_mode->htotal == drm_mode->htotal &&
+			native_mode->vtotal == drm_mode->vtotal) {
+		copy_crtc_timing_for_drm_display_mode(native_mode, drm_mode);
+	} else {
+		/* no scaling nor amdgpu inserted, no need to patch */
+	}
+}
+
+static struct dc_target *create_target_for_sink(
+		const struct amdgpu_connector *aconnector,
+		const struct drm_display_mode *drm_mode,
+		const struct dm_connector_state *dm_state)
+{
+	struct drm_display_mode *preferred_mode = NULL;
+	const struct drm_connector *drm_connector;
+	struct dc_target *target = NULL;
+	struct dc_stream *stream;
+	struct drm_display_mode mode = *drm_mode;
+	bool native_mode_found = false;
+
+	if (NULL == aconnector) {
+		DRM_ERROR("aconnector is NULL!\n");
+		goto drm_connector_null;
+	}
+
+	if (NULL == dm_state) {
+		DRM_ERROR("dm_state is NULL!\n");
+		goto dm_state_null;
+	}
+
+	drm_connector = &aconnector->base;
+	stream = dc_create_stream_for_sink(aconnector->dc_sink);
+
+	if (NULL == stream) {
+		DRM_ERROR("Failed to create stream for sink!\n");
+		goto stream_create_fail;
+	}
+
+	list_for_each_entry(preferred_mode, &aconnector->base.modes, head) {
+		/* Search for preferred mode */
+		if (preferred_mode->type & DRM_MODE_TYPE_PREFERRED) {
+			native_mode_found = true;
+			break;
+		}
+	}
+	if (!native_mode_found)
+		preferred_mode = list_first_entry_or_null(
+				&aconnector->base.modes,
+				struct drm_display_mode,
+				head);
+
+	if (NULL == preferred_mode) {
+		/* This may not be an error, the use case is when we we have no
+		 * usermode calls to reset and set mode upon hotplug. In this
+		 * case, we call set mode ourselves to restore the previous mode
+		 * and the modelist may not be filled in in time.
+		 */
+		DRM_INFO("No preferred mode found\n");
+	} else {
+		decide_crtc_timing_for_drm_display_mode(
+				&mode, preferred_mode,
+				dm_state->scaling != RMX_OFF);
+	}
+
+	fill_stream_properties_from_drm_display_mode(stream,
+			&mode, &aconnector->base);
+	update_stream_scaling_settings(&mode, dm_state, stream);
+
+	fill_audio_info(
+		&stream->audio_info,
+		drm_connector,
+		aconnector->dc_sink);
+
+	target = dc_create_target_for_streams(&stream, 1);
+	dc_stream_release(stream);
+
+	if (NULL == target) {
+		DRM_ERROR("Failed to create target with streams!\n");
+		goto target_create_fail;
+	}
+
+dm_state_null:
+drm_connector_null:
+target_create_fail:
+stream_create_fail:
+	return target;
+}
+
+void amdgpu_dm_crtc_destroy(struct drm_crtc *crtc)
+{
+	drm_crtc_cleanup(crtc);
+	kfree(crtc);
+}
+
+/* Implemented only the options currently availible for the driver */
+static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = {
+	.reset = drm_atomic_helper_crtc_reset,
+	.cursor_set = dm_crtc_cursor_set,
+	.cursor_move = dm_crtc_cursor_move,
+	.destroy = amdgpu_dm_crtc_destroy,
+	.gamma_set = drm_atomic_helper_legacy_gamma_set,
+	.set_config = drm_atomic_helper_set_config,
+	.page_flip = drm_atomic_helper_page_flip,
+	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+static enum drm_connector_status
+amdgpu_dm_connector_detect(struct drm_connector *connector, bool force)
+{
+	bool connected;
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+
+	/* Notes:
+	 * 1. This interface is NOT called in context of HPD irq.
+	 * 2. This interface *is called* in context of user-mode ioctl. Which
+	 * makes it a bad place for *any* MST-related activit. */
+
+	if (aconnector->base.force == DRM_FORCE_UNSPECIFIED)
+		connected = (aconnector->dc_sink != NULL);
+	else
+		connected = (aconnector->base.force == DRM_FORCE_ON);
+
+	return (connected ? connector_status_connected :
+			connector_status_disconnected);
+}
+
+int amdgpu_dm_connector_atomic_set_property(
+	struct drm_connector *connector,
+	struct drm_connector_state *connector_state,
+	struct drm_property *property,
+	uint64_t val)
+{
+	struct drm_device *dev = connector->dev;
+	struct amdgpu_device *adev = dev->dev_private;
+	struct dm_connector_state *dm_old_state =
+		to_dm_connector_state(connector->state);
+	struct dm_connector_state *dm_new_state =
+		to_dm_connector_state(connector_state);
+
+	struct drm_crtc_state *new_crtc_state;
+	struct drm_crtc *crtc;
+	int i;
+	int ret = -EINVAL;
+
+	if (property == dev->mode_config.scaling_mode_property) {
+		enum amdgpu_rmx_type rmx_type;
+
+		switch (val) {
+		case DRM_MODE_SCALE_CENTER:
+			rmx_type = RMX_CENTER;
+			break;
+		case DRM_MODE_SCALE_ASPECT:
+			rmx_type = RMX_ASPECT;
+			break;
+		case DRM_MODE_SCALE_FULLSCREEN:
+			rmx_type = RMX_FULL;
+			break;
+		case DRM_MODE_SCALE_NONE:
+		default:
+			rmx_type = RMX_OFF;
+			break;
+		}
+
+		if (dm_old_state->scaling == rmx_type)
+			return 0;
+
+		dm_new_state->scaling = rmx_type;
+		ret = 0;
+	} else if (property == adev->mode_info.underscan_hborder_property) {
+		dm_new_state->underscan_hborder = val;
+		ret = 0;
+	} else if (property == adev->mode_info.underscan_vborder_property) {
+		dm_new_state->underscan_vborder = val;
+		ret = 0;
+	} else if (property == adev->mode_info.underscan_property) {
+		dm_new_state->underscan_enable = val;
+		ret = 0;
+	}
+
+	for_each_crtc_in_state(
+		connector_state->state,
+		crtc,
+		new_crtc_state,
+		i) {
+
+		if (crtc == connector_state->crtc) {
+			struct drm_plane_state *plane_state;
+
+			/*
+			 * Bit of magic done here. We need to ensure
+			 * that planes get update after mode is set.
+			 * So, we need to add primary plane to state,
+			 * and this way atomic_update would be called
+			 * for it
+			 */
+			plane_state =
+				drm_atomic_get_plane_state(
+					connector_state->state,
+					crtc->primary);
+
+			if (!plane_state)
+				return -EINVAL;
+		}
+	}
+
+	return ret;
+}
+
+void amdgpu_dm_connector_destroy(struct drm_connector *connector)
+{
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+	const struct dc_link *link = aconnector->dc_link;
+	struct amdgpu_device *adev = connector->dev->dev_private;
+	struct amdgpu_display_manager *dm = &adev->dm;
+#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) ||\
+	defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+
+	if (link->connector_signal & (SIGNAL_TYPE_EDP | SIGNAL_TYPE_LVDS)) {
+		amdgpu_dm_register_backlight_device(dm);
+
+		if (dm->backlight_dev) {
+			backlight_device_unregister(dm->backlight_dev);
+			dm->backlight_dev = NULL;
+		}
+
+	}
+#endif
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(connector);
+	kfree(connector);
+}
+
+void amdgpu_dm_connector_funcs_reset(struct drm_connector *connector)
+{
+	struct dm_connector_state *state =
+		to_dm_connector_state(connector->state);
+
+	kfree(state);
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+
+	if (state) {
+		state->scaling = RMX_OFF;
+		state->underscan_enable = false;
+		state->underscan_hborder = 0;
+		state->underscan_vborder = 0;
+
+		connector->state = &state->base;
+		connector->state->connector = connector;
+	}
+}
+
+struct drm_connector_state *amdgpu_dm_connector_atomic_duplicate_state(
+	struct drm_connector *connector)
+{
+	struct dm_connector_state *state =
+		to_dm_connector_state(connector->state);
+
+	struct dm_connector_state *new_state =
+			kmemdup(state, sizeof(*state), GFP_KERNEL);
+
+	if (new_state) {
+		__drm_atomic_helper_connector_duplicate_state(connector,
+								      &new_state->base);
+		return &new_state->base;
+	}
+
+	return NULL;
+}
+
+static const struct drm_connector_funcs amdgpu_dm_connector_funcs = {
+	.reset = amdgpu_dm_connector_funcs_reset,
+	.detect = amdgpu_dm_connector_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = amdgpu_dm_connector_destroy,
+	.atomic_duplicate_state = amdgpu_dm_connector_atomic_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_set_property = amdgpu_dm_connector_atomic_set_property
+};
+
+static struct drm_encoder *best_encoder(struct drm_connector *connector)
+{
+	int enc_id = connector->encoder_ids[0];
+	struct drm_mode_object *obj;
+	struct drm_encoder *encoder;
+
+	DRM_DEBUG_KMS("Finding the best encoder\n");
+
+	/* pick the encoder ids */
+	if (enc_id) {
+		obj = drm_mode_object_find(connector->dev, enc_id, DRM_MODE_OBJECT_ENCODER);
+		if (!obj) {
+			DRM_ERROR("Couldn't find a matching encoder for our connector\n");
+			return NULL;
+		}
+		encoder = obj_to_encoder(obj);
+		return encoder;
+	}
+	DRM_ERROR("No encoder id\n");
+	return NULL;
+}
+
+static int get_modes(struct drm_connector *connector)
+{
+	return amdgpu_dm_connector_get_modes(connector);
+}
+
+static void create_eml_sink(struct amdgpu_connector *aconnector)
+{
+	struct dc_sink_init_data init_params = {
+			.link = aconnector->dc_link,
+			.sink_signal = SIGNAL_TYPE_VIRTUAL
+	};
+	struct edid *edid = (struct edid *) aconnector->base.edid_blob_ptr->data;
+
+	if (!aconnector->base.edid_blob_ptr ||
+		!aconnector->base.edid_blob_ptr->data) {
+		DRM_ERROR("No EDID firmware found on connector: %s ,forcing to OFF!\n",
+				aconnector->base.name);
+
+		aconnector->base.force = DRM_FORCE_OFF;
+		aconnector->base.override_edid = false;
+		return;
+	}
+
+	aconnector->edid = edid;
+
+	aconnector->dc_em_sink = dc_link_add_remote_sink(
+		aconnector->dc_link,
+		(uint8_t *)edid,
+		(edid->extensions + 1) * EDID_LENGTH,
+		&init_params);
+
+	if (aconnector->base.force
+					== DRM_FORCE_ON)
+		aconnector->dc_sink = aconnector->dc_link->local_sink ?
+		aconnector->dc_link->local_sink :
+		aconnector->dc_em_sink;
+}
+
+static void handle_edid_mgmt(struct amdgpu_connector *aconnector)
+{
+	struct dc_link *link = (struct dc_link *)aconnector->dc_link;
+
+	/* In case of headless boot with force on for DP managed connector
+	 * Those settings have to be != 0 to get initial modeset
+	 */
+	if (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT) {
+		link->verified_link_cap.lane_count = LANE_COUNT_FOUR;
+		link->verified_link_cap.link_rate = LINK_RATE_HIGH2;
+	}
+
+
+	aconnector->base.override_edid = true;
+	create_eml_sink(aconnector);
+}
+
+int amdgpu_dm_connector_mode_valid(
+		struct drm_connector *connector,
+		struct drm_display_mode *mode)
+{
+	int result = MODE_ERROR;
+	const struct dc_sink *dc_sink;
+	struct amdgpu_device *adev = connector->dev->dev_private;
+	struct dc_validation_set val_set = { 0 };
+	/* TODO: Unhardcode stream count */
+	struct dc_stream *streams[1];
+	struct dc_target *target;
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+
+	if ((mode->flags & DRM_MODE_FLAG_INTERLACE) ||
+			(mode->flags & DRM_MODE_FLAG_DBLSCAN))
+		return result;
+
+	/* Only run this the first time mode_valid is called to initilialize
+	 * EDID mgmt
+	 */
+	if (aconnector->base.force != DRM_FORCE_UNSPECIFIED &&
+		!aconnector->dc_em_sink)
+		handle_edid_mgmt(aconnector);
+
+	dc_sink = to_amdgpu_connector(connector)->dc_sink;
+
+	if (NULL == dc_sink) {
+		DRM_ERROR("dc_sink is NULL!\n");
+		goto stream_create_fail;
+	}
+
+	streams[0] = dc_create_stream_for_sink(dc_sink);
+
+	if (NULL == streams[0]) {
+		DRM_ERROR("Failed to create stream for sink!\n");
+		goto stream_create_fail;
+	}
+
+	drm_mode_set_crtcinfo(mode, 0);
+	fill_stream_properties_from_drm_display_mode(streams[0], mode, connector);
+
+	target = dc_create_target_for_streams(streams, 1);
+	val_set.target = target;
+
+	if (NULL == val_set.target) {
+		DRM_ERROR("Failed to create target with stream!\n");
+		goto target_create_fail;
+	}
+
+	val_set.surface_count = 0;
+	streams[0]->src.width = mode->hdisplay;
+	streams[0]->src.height = mode->vdisplay;
+	streams[0]->dst = streams[0]->src;
+
+	if (dc_validate_resources(adev->dm.dc, &val_set, 1))
+		result = MODE_OK;
+
+	dc_target_release(target);
+target_create_fail:
+	dc_stream_release(streams[0]);
+stream_create_fail:
+	/* TODO: error handling*/
+	return result;
+}
+
+static const struct drm_connector_helper_funcs
+amdgpu_dm_connector_helper_funcs = {
+	/*
+	* If hotplug a second bigger display in FB Con mode, bigger resolution
+	* modes will be filtered by drm_mode_validate_size(), and those modes
+	* is missing after user start lightdm. So we need to renew modes list.
+	* in get_modes call back, not just return the modes count
+	*/
+	.get_modes = get_modes,
+	.mode_valid = amdgpu_dm_connector_mode_valid,
+	.best_encoder = best_encoder
+};
+
+static void dm_crtc_helper_disable(struct drm_crtc *crtc)
+{
+}
+
+static int dm_crtc_helper_atomic_check(
+	struct drm_crtc *crtc,
+	struct drm_crtc_state *state)
+{
+	return 0;
+}
+
+static bool dm_crtc_helper_mode_fixup(
+	struct drm_crtc *crtc,
+	const struct drm_display_mode *mode,
+	struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+
+static const struct drm_crtc_helper_funcs amdgpu_dm_crtc_helper_funcs = {
+	.disable = dm_crtc_helper_disable,
+	.atomic_check = dm_crtc_helper_atomic_check,
+	.mode_fixup = dm_crtc_helper_mode_fixup
+};
+
+static void dm_encoder_helper_disable(struct drm_encoder *encoder)
+{
+
+}
+
+static int dm_encoder_helper_atomic_check(
+	struct drm_encoder *encoder,
+	struct drm_crtc_state *crtc_state,
+	struct drm_connector_state *conn_state)
+{
+	return 0;
+}
+
+const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs = {
+	.disable = dm_encoder_helper_disable,
+	.atomic_check = dm_encoder_helper_atomic_check
+};
+
+static const struct drm_plane_funcs dm_plane_funcs = {
+	.reset = drm_atomic_helper_plane_reset,
+	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state
+};
+
+static void clear_unrelated_fields(struct drm_plane_state *state)
+{
+	state->crtc = NULL;
+	state->fb = NULL;
+	state->state = NULL;
+	state->fence = NULL;
+}
+
+static bool page_flip_needed(
+	const struct drm_plane_state *new_state,
+	const struct drm_plane_state *old_state,
+	struct drm_pending_vblank_event *event,
+	bool commit_surface_required)
+{
+	struct drm_plane_state old_state_tmp;
+	struct drm_plane_state new_state_tmp;
+
+	struct amdgpu_framebuffer *amdgpu_fb_old;
+	struct amdgpu_framebuffer *amdgpu_fb_new;
+	struct amdgpu_crtc *acrtc_new;
+
+	uint64_t old_tiling_flags;
+	uint64_t new_tiling_flags;
+
+	bool page_flip_required;
+
+	if (!old_state)
+		return false;
+
+	if (!old_state->fb)
+		return false;
+
+	if (!new_state)
+		return false;
+
+	if (!new_state->fb)
+		return false;
+
+	old_state_tmp = *old_state;
+	new_state_tmp = *new_state;
+
+	if (!event)
+		return false;
+
+	amdgpu_fb_old = to_amdgpu_framebuffer(old_state->fb);
+	amdgpu_fb_new = to_amdgpu_framebuffer(new_state->fb);
+
+	if (!get_fb_info(amdgpu_fb_old, &old_tiling_flags, NULL))
+		return false;
+
+	if (!get_fb_info(amdgpu_fb_new, &new_tiling_flags, NULL))
+		return false;
+
+	if (commit_surface_required == true &&
+	    old_tiling_flags != new_tiling_flags)
+		return false;
+
+	clear_unrelated_fields(&old_state_tmp);
+	clear_unrelated_fields(&new_state_tmp);
+
+	page_flip_required = memcmp(&old_state_tmp,
+				    &new_state_tmp,
+				    sizeof(old_state_tmp)) == 0 ? true:false;
+	if (new_state->crtc && page_flip_required == false) {
+		acrtc_new = to_amdgpu_crtc(new_state->crtc);
+		if (acrtc_new->flip_flags & DRM_MODE_PAGE_FLIP_ASYNC)
+			page_flip_required = true;
+	}
+	return page_flip_required;
+}
+
+static int dm_plane_helper_prepare_fb(
+	struct drm_plane *plane,
+	struct drm_plane_state *new_state)
+{
+	struct amdgpu_framebuffer *afb;
+	struct drm_gem_object *obj;
+	struct amdgpu_bo *rbo;
+	int r;
+
+	if (!new_state->fb) {
+		DRM_DEBUG_KMS("No FB bound\n");
+		return 0;
+	}
+
+	afb = to_amdgpu_framebuffer(new_state->fb);
+
+	obj = afb->obj;
+	rbo = gem_to_amdgpu_bo(obj);
+	r = amdgpu_bo_reserve(rbo, false);
+	if (unlikely(r != 0))
+		return r;
+
+	r = amdgpu_bo_pin(rbo, AMDGPU_GEM_DOMAIN_VRAM, NULL);
+
+	amdgpu_bo_unreserve(rbo);
+
+	if (unlikely(r != 0)) {
+		DRM_ERROR("Failed to pin framebuffer\n");
+		return r;
+	}
+
+	return 0;
+}
+
+static void dm_plane_helper_cleanup_fb(
+	struct drm_plane *plane,
+	struct drm_plane_state *old_state)
+{
+	struct amdgpu_bo *rbo;
+	struct amdgpu_framebuffer *afb;
+	int r;
+
+	if (!old_state->fb)
+		return;
+
+	afb = to_amdgpu_framebuffer(old_state->fb);
+	rbo = gem_to_amdgpu_bo(afb->obj);
+	r = amdgpu_bo_reserve(rbo, false);
+	if (unlikely(r)) {
+		DRM_ERROR("failed to reserve rbo before unpin\n");
+		return;
+	} else {
+		amdgpu_bo_unpin(rbo);
+		amdgpu_bo_unreserve(rbo);
+	}
+}
+
+int dm_create_validation_set_for_target(struct drm_connector *connector,
+		struct drm_display_mode *mode, struct dc_validation_set *val_set)
+{
+	int result = MODE_ERROR;
+	const struct dc_sink *dc_sink =
+			to_amdgpu_connector(connector)->dc_sink;
+	/* TODO: Unhardcode stream count */
+	struct dc_stream *streams[1];
+	struct dc_target *target;
+
+	if ((mode->flags & DRM_MODE_FLAG_INTERLACE) ||
+			(mode->flags & DRM_MODE_FLAG_DBLSCAN))
+		return result;
+
+	if (NULL == dc_sink) {
+		DRM_ERROR("dc_sink is NULL!\n");
+		return result;
+	}
+
+	streams[0] = dc_create_stream_for_sink(dc_sink);
+
+	if (NULL == streams[0]) {
+		DRM_ERROR("Failed to create stream for sink!\n");
+		return result;
+	}
+
+	drm_mode_set_crtcinfo(mode, 0);
+
+	fill_stream_properties_from_drm_display_mode(streams[0], mode, connector);
+
+	target = dc_create_target_for_streams(streams, 1);
+	val_set->target = target;
+
+	if (NULL == val_set->target) {
+		DRM_ERROR("Failed to create target with stream!\n");
+		goto fail;
+	}
+
+	streams[0]->src.width = mode->hdisplay;
+	streams[0]->src.height = mode->vdisplay;
+	streams[0]->dst = streams[0]->src;
+
+	return MODE_OK;
+
+fail:
+	dc_stream_release(streams[0]);
+	return result;
+
+}
+
+static const struct drm_plane_helper_funcs dm_plane_helper_funcs = {
+	.prepare_fb = dm_plane_helper_prepare_fb,
+	.cleanup_fb = dm_plane_helper_cleanup_fb,
+};
+
+/*
+ * TODO: these are currently initialized to rgb formats only.
+ * For future use cases we should either initialize them dynamically based on
+ * plane capabilities, or initialize this array to all formats, so internal drm
+ * check will succeed, and let DC to implement proper check
+ */
+static uint32_t rgb_formats[] = {
+	DRM_FORMAT_XRGB4444,
+	DRM_FORMAT_ARGB4444,
+	DRM_FORMAT_RGBA4444,
+	DRM_FORMAT_ARGB1555,
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_RGBA8888,
+	DRM_FORMAT_XRGB2101010,
+	DRM_FORMAT_XBGR2101010,
+	DRM_FORMAT_ARGB2101010,
+	DRM_FORMAT_ABGR2101010,
+};
+
+int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
+			struct amdgpu_crtc *acrtc,
+			uint32_t crtc_index)
+{
+	int res = -ENOMEM;
+
+	struct drm_plane *primary_plane =
+		kzalloc(sizeof(*primary_plane), GFP_KERNEL);
+
+	if (!primary_plane)
+		goto fail_plane;
+
+	primary_plane->format_default = true;
+
+	res = drm_universal_plane_init(
+		dm->adev->ddev,
+		primary_plane,
+		0,
+		&dm_plane_funcs,
+		rgb_formats,
+		ARRAY_SIZE(rgb_formats),
+		NULL,
+		DRM_PLANE_TYPE_PRIMARY, NULL);
+
+	primary_plane->crtc = &acrtc->base;
+
+	drm_plane_helper_add(primary_plane, &dm_plane_helper_funcs);
+
+	res = drm_crtc_init_with_planes(
+			dm->ddev,
+			&acrtc->base,
+			primary_plane,
+			NULL,
+			&amdgpu_dm_crtc_funcs, NULL);
+
+	if (res)
+		goto fail;
+
+	drm_crtc_helper_add(&acrtc->base, &amdgpu_dm_crtc_helper_funcs);
+
+	acrtc->max_cursor_width = 128;
+	acrtc->max_cursor_height = 128;
+
+	acrtc->crtc_id = crtc_index;
+	acrtc->base.enabled = false;
+
+	dm->adev->mode_info.crtcs[crtc_index] = acrtc;
+	drm_mode_crtc_set_gamma_size(&acrtc->base, 256);
+
+	return 0;
+fail:
+	kfree(primary_plane);
+fail_plane:
+	acrtc->crtc_id = -1;
+	return res;
+}
+
+static int to_drm_connector_type(enum signal_type st)
+{
+	switch (st) {
+	case SIGNAL_TYPE_HDMI_TYPE_A:
+		return DRM_MODE_CONNECTOR_HDMIA;
+	case SIGNAL_TYPE_EDP:
+		return DRM_MODE_CONNECTOR_eDP;
+	case SIGNAL_TYPE_RGB:
+		return DRM_MODE_CONNECTOR_VGA;
+	case SIGNAL_TYPE_DISPLAY_PORT:
+	case SIGNAL_TYPE_DISPLAY_PORT_MST:
+		return DRM_MODE_CONNECTOR_DisplayPort;
+	case SIGNAL_TYPE_DVI_DUAL_LINK:
+	case SIGNAL_TYPE_DVI_SINGLE_LINK:
+		return DRM_MODE_CONNECTOR_DVID;
+	case SIGNAL_TYPE_VIRTUAL:
+		return DRM_MODE_CONNECTOR_VIRTUAL;
+
+	default:
+		return DRM_MODE_CONNECTOR_Unknown;
+	}
+}
+
+static void amdgpu_dm_get_native_mode(struct drm_connector *connector)
+{
+	const struct drm_connector_helper_funcs *helper =
+		connector->helper_private;
+	struct drm_encoder *encoder;
+	struct amdgpu_encoder *amdgpu_encoder;
+
+	encoder = helper->best_encoder(connector);
+
+	if (encoder == NULL)
+		return;
+
+	amdgpu_encoder = to_amdgpu_encoder(encoder);
+
+	amdgpu_encoder->native_mode.clock = 0;
+
+	if (!list_empty(&connector->probed_modes)) {
+		struct drm_display_mode *preferred_mode = NULL;
+		list_for_each_entry(preferred_mode,
+				&connector->probed_modes,
+				head) {
+		if (preferred_mode->type & DRM_MODE_TYPE_PREFERRED) {
+			amdgpu_encoder->native_mode = *preferred_mode;
+		}
+			break;
+		}
+
+	}
+}
+
+static struct drm_display_mode *amdgpu_dm_create_common_mode(
+		struct drm_encoder *encoder, char *name,
+		int hdisplay, int vdisplay)
+{
+	struct drm_device *dev = encoder->dev;
+	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
+	struct drm_display_mode *mode = NULL;
+	struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
+
+	mode = drm_mode_duplicate(dev, native_mode);
+
+	if(mode == NULL)
+		return NULL;
+
+	mode->hdisplay = hdisplay;
+	mode->vdisplay = vdisplay;
+	mode->type &= ~DRM_MODE_TYPE_PREFERRED;
+	strncpy(mode->name, name, DRM_DISPLAY_MODE_LEN);
+
+	return mode;
+
+}
+
+static void amdgpu_dm_connector_add_common_modes(struct drm_encoder *encoder,
+					struct drm_connector *connector)
+{
+	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
+	struct drm_display_mode *mode = NULL;
+	struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
+	struct amdgpu_connector *amdgpu_connector =
+				to_amdgpu_connector(connector);
+	int i;
+	int n;
+	struct mode_size {
+		char name[DRM_DISPLAY_MODE_LEN];
+		int w;
+		int h;
+	}common_modes[] = {
+		{  "640x480",  640,  480},
+		{  "800x600",  800,  600},
+		{ "1024x768", 1024,  768},
+		{ "1280x720", 1280,  720},
+		{ "1280x800", 1280,  800},
+		{"1280x1024", 1280, 1024},
+		{ "1440x900", 1440,  900},
+		{"1680x1050", 1680, 1050},
+		{"1600x1200", 1600, 1200},
+		{"1920x1080", 1920, 1080},
+		{"1920x1200", 1920, 1200}
+	};
+
+	n = sizeof(common_modes) / sizeof(common_modes[0]);
+
+	for (i = 0; i < n; i++) {
+		struct drm_display_mode *curmode = NULL;
+		bool mode_existed = false;
+
+		if (common_modes[i].w > native_mode->hdisplay ||
+			common_modes[i].h > native_mode->vdisplay ||
+			(common_modes[i].w == native_mode->hdisplay &&
+			common_modes[i].h == native_mode->vdisplay))
+				continue;
+
+		list_for_each_entry(curmode, &connector->probed_modes, head) {
+			if (common_modes[i].w == curmode->hdisplay &&
+				common_modes[i].h == curmode->vdisplay) {
+				mode_existed = true;
+				break;
+			}
+		}
+
+		if (mode_existed)
+			continue;
+
+		mode = amdgpu_dm_create_common_mode(encoder,
+				common_modes[i].name, common_modes[i].w,
+				common_modes[i].h);
+		drm_mode_probed_add(connector, mode);
+		amdgpu_connector->num_modes++;
+	}
+}
+
+static void amdgpu_dm_connector_ddc_get_modes(
+	struct drm_connector *connector,
+	struct edid *edid)
+{
+	struct amdgpu_connector *amdgpu_connector =
+			to_amdgpu_connector(connector);
+
+	if (edid) {
+		/* empty probed_modes */
+		INIT_LIST_HEAD(&connector->probed_modes);
+		amdgpu_connector->num_modes =
+				drm_add_edid_modes(connector, edid);
+
+		drm_edid_to_eld(connector, edid);
+
+		amdgpu_dm_get_native_mode(connector);
+	} else
+		amdgpu_connector->num_modes = 0;
+}
+
+int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
+{
+	const struct drm_connector_helper_funcs *helper =
+			connector->helper_private;
+	struct amdgpu_connector *amdgpu_connector =
+			to_amdgpu_connector(connector);
+	struct drm_encoder *encoder;
+	struct edid *edid = amdgpu_connector->edid;
+
+	encoder = helper->best_encoder(connector);
+
+	amdgpu_dm_connector_ddc_get_modes(connector, edid);
+	amdgpu_dm_connector_add_common_modes(encoder, connector);
+	return amdgpu_connector->num_modes;
+}
+
+void amdgpu_dm_connector_init_helper(
+	struct amdgpu_display_manager *dm,
+	struct amdgpu_connector *aconnector,
+	int connector_type,
+	const struct dc_link *link,
+	int link_index)
+{
+	struct amdgpu_device *adev = dm->ddev->dev_private;
+
+	aconnector->connector_id = link_index;
+	aconnector->dc_link = link;
+	aconnector->base.interlace_allowed = true;
+	aconnector->base.doublescan_allowed = true;
+	aconnector->base.dpms = DRM_MODE_DPMS_OFF;
+	aconnector->hpd.hpd = AMDGPU_HPD_NONE; /* not used */
+
+	mutex_init(&aconnector->hpd_lock);
+
+	/*configure suport HPD hot plug connector_>polled default value is 0
+	 * which means HPD hot plug not supported*/
+	switch (connector_type) {
+	case DRM_MODE_CONNECTOR_HDMIA:
+		aconnector->base.polled = DRM_CONNECTOR_POLL_HPD;
+		break;
+	case DRM_MODE_CONNECTOR_DisplayPort:
+		aconnector->base.polled = DRM_CONNECTOR_POLL_HPD;
+		break;
+	case DRM_MODE_CONNECTOR_DVID:
+		aconnector->base.polled = DRM_CONNECTOR_POLL_HPD;
+		break;
+	default:
+		break;
+	}
+
+	drm_object_attach_property(&aconnector->base.base,
+				dm->ddev->mode_config.scaling_mode_property,
+				DRM_MODE_SCALE_NONE);
+
+	drm_object_attach_property(&aconnector->base.base,
+				adev->mode_info.underscan_property,
+				UNDERSCAN_OFF);
+	drm_object_attach_property(&aconnector->base.base,
+				adev->mode_info.underscan_hborder_property,
+				0);
+	drm_object_attach_property(&aconnector->base.base,
+				adev->mode_info.underscan_vborder_property,
+				0);
+
+}
+
+int amdgpu_dm_i2c_xfer(struct i2c_adapter *i2c_adap,
+		      struct i2c_msg *msgs, int num)
+{
+	struct amdgpu_i2c_adapter *i2c = i2c_get_adapdata(i2c_adap);
+	struct i2c_command cmd;
+	int i;
+	int result = -EIO;
+
+	cmd.payloads = kzalloc(num * sizeof(struct i2c_payload), GFP_KERNEL);
+
+	if (!cmd.payloads)
+		return result;
+
+	cmd.number_of_payloads = num;
+	cmd.engine = I2C_COMMAND_ENGINE_DEFAULT;
+	cmd.speed = 100;
+
+	for (i = 0; i < num; i++) {
+		cmd.payloads[i].write = (msgs[i].flags & I2C_M_RD);
+		cmd.payloads[i].address = msgs[i].addr;
+		cmd.payloads[i].length = msgs[i].len;
+		cmd.payloads[i].data = msgs[i].buf;
+	}
+
+	if (dc_submit_i2c(i2c->dm->dc, i2c->link_index, &cmd))
+		result = num;
+
+	kfree(cmd.payloads);
+
+	return result;
+}
+
+u32 amdgpu_dm_i2c_func(struct i2c_adapter *adap)
+{
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm amdgpu_dm_i2c_algo = {
+	.master_xfer = amdgpu_dm_i2c_xfer,
+	.functionality = amdgpu_dm_i2c_func,
+};
+
+struct amdgpu_i2c_adapter *create_i2c(unsigned int link_index, struct amdgpu_display_manager *dm, int *res)
+{
+	struct amdgpu_i2c_adapter *i2c;
+
+	i2c = kzalloc(sizeof (struct amdgpu_i2c_adapter), GFP_KERNEL);
+	i2c->dm = dm;
+	i2c->base.owner = THIS_MODULE;
+	i2c->base.class = I2C_CLASS_DDC;
+	i2c->base.dev.parent = &dm->adev->pdev->dev;
+	i2c->base.algo = &amdgpu_dm_i2c_algo;
+	snprintf(i2c->base.name, sizeof (i2c->base.name), "AMDGPU DM i2c hw bus %d", link_index);
+	i2c->link_index = link_index;
+	i2c_set_adapdata(&i2c->base, i2c);
+
+	return i2c;
+}
+
+/* Note: this function assumes that dc_link_detect() was called for the
+ * dc_link which will be represented by this aconnector. */
+int amdgpu_dm_connector_init(
+	struct amdgpu_display_manager *dm,
+	struct amdgpu_connector *aconnector,
+	uint32_t link_index,
+	struct amdgpu_encoder *aencoder)
+{
+	int res = 0;
+	int connector_type;
+	struct dc *dc = dm->dc;
+	const struct dc_link *link = dc_get_link_at_index(dc, link_index);
+	struct amdgpu_i2c_adapter *i2c;
+
+	DRM_DEBUG_KMS("%s()\n", __func__);
+
+	i2c = create_i2c(link->link_index, dm, &res);
+	aconnector->i2c = i2c;
+	res = i2c_add_adapter(&i2c->base);
+
+	if (res) {
+		DRM_ERROR("Failed to register hw i2c %d\n", link->link_index);
+		goto out_free;
+	}
+
+	connector_type = to_drm_connector_type(link->connector_signal);
+
+	res = drm_connector_init(
+			dm->ddev,
+			&aconnector->base,
+			&amdgpu_dm_connector_funcs,
+			connector_type);
+
+	if (res) {
+		DRM_ERROR("connector_init failed\n");
+		aconnector->connector_id = -1;
+		goto out_free;
+	}
+
+	drm_connector_helper_add(
+			&aconnector->base,
+			&amdgpu_dm_connector_helper_funcs);
+
+	amdgpu_dm_connector_init_helper(
+		dm,
+		aconnector,
+		connector_type,
+		link,
+		link_index);
+
+	drm_mode_connector_attach_encoder(
+		&aconnector->base, &aencoder->base);
+
+	drm_connector_register(&aconnector->base);
+
+	if (connector_type == DRM_MODE_CONNECTOR_DisplayPort
+		|| connector_type == DRM_MODE_CONNECTOR_eDP)
+		amdgpu_dm_initialize_mst_connector(dm, aconnector);
+
+#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) ||\
+	defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
+
+	/* NOTE: this currently will create backlight device even if a panel
+	 * is not connected to the eDP/LVDS connector.
+	 *
+	 * This is less than ideal but we don't have sink information at this
+	 * stage since detection happens after. We can't do detection earlier
+	 * since MST detection needs connectors to be created first.
+	 */
+	if (link->connector_signal & (SIGNAL_TYPE_EDP | SIGNAL_TYPE_LVDS)) {
+		/* Event if registration failed, we should continue with
+		 * DM initialization because not having a backlight control
+		 * is better then a black screen. */
+		amdgpu_dm_register_backlight_device(dm);
+
+		if (dm->backlight_dev)
+			dm->backlight_link = link;
+	}
+#endif
+
+out_free:
+	if (res) {
+		kfree(i2c);
+		aconnector->i2c = NULL;
+	}
+	return res;
+}
+
+int amdgpu_dm_get_encoder_crtc_mask(struct amdgpu_device *adev)
+{
+	switch (adev->mode_info.num_crtc) {
+	case 1:
+		return 0x1;
+	case 2:
+		return 0x3;
+	case 3:
+		return 0x7;
+	case 4:
+		return 0xf;
+	case 5:
+		return 0x1f;
+	case 6:
+	default:
+		return 0x3f;
+	}
+}
+
+int amdgpu_dm_encoder_init(
+	struct drm_device *dev,
+	struct amdgpu_encoder *aencoder,
+	uint32_t link_index)
+{
+	struct amdgpu_device *adev = dev->dev_private;
+
+	int res = drm_encoder_init(dev,
+				   &aencoder->base,
+				   &amdgpu_dm_encoder_funcs,
+				   DRM_MODE_ENCODER_TMDS,
+				   NULL);
+
+	aencoder->base.possible_crtcs = amdgpu_dm_get_encoder_crtc_mask(adev);
+
+	if (!res)
+		aencoder->encoder_id = link_index;
+	else
+		aencoder->encoder_id = -1;
+
+	drm_encoder_helper_add(&aencoder->base, &amdgpu_dm_encoder_helper_funcs);
+
+	return res;
+}
+
+enum dm_commit_action {
+	DM_COMMIT_ACTION_NOTHING,
+	DM_COMMIT_ACTION_RESET,
+	DM_COMMIT_ACTION_DPMS_ON,
+	DM_COMMIT_ACTION_DPMS_OFF,
+	DM_COMMIT_ACTION_SET
+};
+
+static enum dm_commit_action get_dm_commit_action(struct drm_crtc_state *state)
+{
+	/* mode changed means either actually mode changed or enabled changed */
+	/* active changed means dpms changed */
+
+	DRM_DEBUG_KMS("crtc_state_flags: enable:%d, active:%d, planes_changed:%d, mode_changed:%d,active_changed:%d,connectors_changed:%d\n",
+			state->enable,
+			state->active,
+			state->planes_changed,
+			state->mode_changed,
+			state->active_changed,
+			state->connectors_changed);
+
+	if (state->mode_changed) {
+		/* if it is got disabled - call reset mode */
+		if (!state->enable)
+			return DM_COMMIT_ACTION_RESET;
+
+		if (state->active)
+			return DM_COMMIT_ACTION_SET;
+		else
+			return DM_COMMIT_ACTION_RESET;
+	} else {
+		/* ! mode_changed */
+
+		/* if it is remain disable - skip it */
+		if (!state->enable)
+			return DM_COMMIT_ACTION_NOTHING;
+
+		if (state->active && state->connectors_changed)
+			return DM_COMMIT_ACTION_SET;
+
+		if (state->active_changed) {
+			if (state->active) {
+				return DM_COMMIT_ACTION_DPMS_ON;
+			} else {
+				return DM_COMMIT_ACTION_DPMS_OFF;
+			}
+		} else {
+			/* ! active_changed */
+			return DM_COMMIT_ACTION_NOTHING;
+		}
+	}
+}
+
+
+typedef bool (*predicate)(struct amdgpu_crtc *acrtc);
+
+static void wait_while_pflip_status(struct amdgpu_device *adev,
+		struct amdgpu_crtc *acrtc, predicate f) {
+	int count = 0;
+	while (f(acrtc)) {
+		/* Spin Wait*/
+		msleep(1);
+		count++;
+		if (count == 1000) {
+			DRM_ERROR("%s - crtc:%d[%p], pflip_stat:%d, probable hang!\n",
+										__func__, acrtc->crtc_id,
+										acrtc,
+										acrtc->pflip_status);
+
+			/* we do not expect to hit this case except on Polaris with PHY PLL
+			 * 1. DP to HDMI passive dongle connected
+			 * 2. unplug (headless)
+			 * 3. plug in DP
+			 * 3a. on plug in, DP will try verify link by training, and training
+			 * would disable PHY PLL which HDMI rely on to drive TG
+			 * 3b. this will cause flip interrupt cannot be generated, and we
+			 * exit when timeout expired.  however we do not have code to clean
+			 * up flip, flip clean up will happen when the address is written
+			 * with the restore mode change
+			 */
+			WARN_ON(1);
+			break;
+		}
+	}
+
+	DRM_DEBUG_DRIVER("%s - Finished waiting for:%d msec, crtc:%d[%p], pflip_stat:%d \n",
+											__func__,
+											count,
+											acrtc->crtc_id,
+											acrtc,
+											acrtc->pflip_status);
+}
+
+static bool pflip_in_progress_predicate(struct amdgpu_crtc *acrtc)
+{
+	return acrtc->pflip_status != AMDGPU_FLIP_NONE;
+}
+
+static void manage_dm_interrupts(
+	struct amdgpu_device *adev,
+	struct amdgpu_crtc *acrtc,
+	bool enable)
+{
+	/*
+	 * this is not correct translation but will work as soon as VBLANK
+	 * constant is the same as PFLIP
+	 */
+	int irq_type =
+		amdgpu_crtc_idx_to_irq_type(
+			adev,
+			acrtc->crtc_id);
+
+	if (enable) {
+		drm_crtc_vblank_on(&acrtc->base);
+		amdgpu_irq_get(
+			adev,
+			&adev->pageflip_irq,
+			irq_type);
+	} else {
+		wait_while_pflip_status(adev, acrtc,
+				pflip_in_progress_predicate);
+
+		amdgpu_irq_put(
+			adev,
+			&adev->pageflip_irq,
+			irq_type);
+		drm_crtc_vblank_off(&acrtc->base);
+	}
+}
+
+
+static bool pflip_pending_predicate(struct amdgpu_crtc *acrtc)
+{
+	return acrtc->pflip_status == AMDGPU_FLIP_PENDING;
+}
+
+static bool is_scaling_state_different(
+		const struct dm_connector_state *dm_state,
+		const struct dm_connector_state *old_dm_state)
+{
+	if (dm_state->scaling != old_dm_state->scaling)
+		return true;
+	if (!dm_state->underscan_enable && old_dm_state->underscan_enable) {
+		if (old_dm_state->underscan_hborder != 0 && old_dm_state->underscan_vborder != 0)
+			return true;
+	} else  if (dm_state->underscan_enable && !old_dm_state->underscan_enable) {
+		if (dm_state->underscan_hborder != 0 && dm_state->underscan_vborder != 0)
+			return true;
+	} else if (dm_state->underscan_hborder != old_dm_state->underscan_hborder
+				|| dm_state->underscan_vborder != old_dm_state->underscan_vborder)
+			return true;
+	return false;
+}
+
+static void remove_target(struct amdgpu_device *adev, struct amdgpu_crtc *acrtc)
+{
+	int i;
+
+	/*
+	 * we evade vblanks and pflips on crtc that
+	 * should be changed
+	 */
+	manage_dm_interrupts(adev, acrtc, false);
+	/* this is the update mode case */
+	if (adev->dm.freesync_module)
+		for (i = 0; i < acrtc->target->stream_count; i++)
+			mod_freesync_remove_stream(
+					adev->dm.freesync_module,
+					acrtc->target->streams[i]);
+	dc_target_release(acrtc->target);
+	acrtc->target = NULL;
+	acrtc->otg_inst = -1;
+	acrtc->enabled = false;
+}
+
+int amdgpu_dm_atomic_commit(
+	struct drm_device *dev,
+	struct drm_atomic_state *state,
+	bool async)
+{
+	struct amdgpu_device *adev = dev->dev_private;
+	struct amdgpu_display_manager *dm = &adev->dm;
+	struct drm_plane *plane;
+	struct drm_plane_state *new_plane_state;
+	struct drm_plane_state *old_plane_state;
+	uint32_t i, j;
+	int32_t ret = 0;
+	uint32_t commit_targets_count = 0;
+	uint32_t new_crtcs_count = 0;
+	uint32_t flip_crtcs_count = 0;
+	struct drm_crtc *crtc;
+	struct drm_crtc_state *old_crtc_state;
+
+	struct dc_target *commit_targets[MAX_TARGETS];
+	struct amdgpu_crtc *new_crtcs[MAX_TARGETS];
+	struct dc_target *new_target;
+	struct drm_crtc *flip_crtcs[MAX_TARGETS];
+	struct amdgpu_flip_work *work[MAX_TARGETS] = {0};
+	struct amdgpu_bo *new_abo[MAX_TARGETS] = {0};
+
+	/* In this step all new fb would be pinned */
+
+	/*
+	 * TODO: Revisit when we support true asynchronous commit.
+	 * Right now we receive async commit only from pageflip, in which case
+	 * we should not pin/unpin the fb here, it should be done in
+	 * amdgpu_crtc_flip and from the vblank irq handler.
+	 */
+	if (!async) {
+		ret = drm_atomic_helper_prepare_planes(dev, state);
+		if (ret)
+			return ret;
+	}
+
+	/* Page flip if needed */
+	for_each_plane_in_state(state, plane, new_plane_state, i) {
+		struct drm_plane_state *old_plane_state = plane->state;
+		struct drm_crtc *crtc = new_plane_state->crtc;
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+		struct drm_framebuffer *fb = new_plane_state->fb;
+		struct drm_crtc_state *crtc_state;
+
+		if (!fb || !crtc)
+			continue;
+
+		crtc_state = drm_atomic_get_crtc_state(state, crtc);
+
+		if (!crtc_state->planes_changed || !crtc_state->active)
+			continue;
+
+		if (page_flip_needed(
+				new_plane_state,
+				old_plane_state,
+				crtc_state->event,
+				false)) {
+			ret = amdgpu_crtc_prepare_flip(crtc,
+							fb,
+							crtc_state->event,
+							acrtc->flip_flags,
+							drm_crtc_vblank_count(crtc),
+							&work[flip_crtcs_count],
+							&new_abo[flip_crtcs_count]);
+
+			if (ret) {
+				/* According to atomic_commit hook API, EINVAL is not allowed */
+				if (unlikely(ret == -EINVAL))
+					ret = -ENOMEM;
+
+				DRM_ERROR("Atomic commit: Flip for  crtc id %d: [%p], "
+									"failed, errno = %d\n",
+									acrtc->crtc_id,
+									acrtc,
+									ret);
+				/* cleanup all flip configurations which
+				 * succeeded in this commit
+				 */
+				for (i = 0; i < flip_crtcs_count; i++)
+					amdgpu_crtc_cleanup_flip_ctx(
+							work[i],
+							new_abo[i]);
+
+				return ret;
+			}
+
+			flip_crtcs[flip_crtcs_count] = crtc;
+			flip_crtcs_count++;
+		}
+	}
+
+	/*
+	 * This is the point of no return - everything below never fails except
+	 * when the hw goes bonghits. Which means we can commit the new state on
+	 * the software side now.
+	 */
+
+	drm_atomic_helper_swap_state(state, true);
+
+	/*
+	 * From this point state become old state really. New state is
+	 * initialized to appropriate objects and could be accessed from there
+	 */
+
+	/*
+	 * there is no fences usage yet in state. We can skip the following line
+	 * wait_for_fences(dev, state);
+	 */
+
+	drm_atomic_helper_update_legacy_modeset_state(dev, state);
+
+	/* update changed items */
+	for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
+		struct amdgpu_crtc *acrtc;
+		struct amdgpu_connector *aconnector = NULL;
+		enum dm_commit_action action;
+		struct drm_crtc_state *new_state = crtc->state;
+
+		acrtc = to_amdgpu_crtc(crtc);
+
+		aconnector =
+			amdgpu_dm_find_first_crct_matching_connector(
+				state,
+				crtc,
+				false);
+
+		/* handles headless hotplug case, updating new_state and
+		 * aconnector as needed
+		 */
+
+		action = get_dm_commit_action(new_state);
+
+		switch (action) {
+		case DM_COMMIT_ACTION_DPMS_ON:
+		case DM_COMMIT_ACTION_SET: {
+			struct dm_connector_state *dm_state = NULL;
+			new_target = NULL;
+
+			if (aconnector)
+				dm_state = to_dm_connector_state(aconnector->base.state);
+
+			new_target = create_target_for_sink(
+					aconnector,
+					&crtc->state->mode,
+					dm_state);
+
+			DRM_INFO("Atomic commit: SET crtc id %d: [%p]\n", acrtc->crtc_id, acrtc);
+
+			if (!new_target) {
+				/*
+				 * this could happen because of issues with
+				 * userspace notifications delivery.
+				 * In this case userspace tries to set mode on
+				 * display which is disconnect in fact.
+				 * dc_sink in NULL in this case on aconnector.
+				 * We expect reset mode will come soon.
+				 *
+				 * This can also happen when unplug is done
+				 * during resume sequence ended
+				 *
+				 * In this case, we want to pretend we still
+				 * have a sink to keep the pipe running so that
+				 * hw state is consistent with the sw state
+				 */
+				DRM_DEBUG_KMS("%s: Failed to create new target for crtc %d\n",
+						__func__, acrtc->base.base.id);
+				break;
+			}
+
+			if (acrtc->target)
+				remove_target(adev, acrtc);
+
+			/*
+			 * this loop saves set mode crtcs
+			 * we needed to enable vblanks once all
+			 * resources acquired in dc after dc_commit_targets
+			 */
+			new_crtcs[new_crtcs_count] = acrtc;
+			new_crtcs_count++;
+
+			acrtc->target = new_target;
+			acrtc->enabled = true;
+			acrtc->hw_mode = crtc->state->mode;
+			crtc->hwmode = crtc->state->mode;
+
+			break;
+		}
+
+		case DM_COMMIT_ACTION_NOTHING: {
+			struct dm_connector_state *dm_state = NULL;
+
+			if (!aconnector)
+				break;
+
+			dm_state = to_dm_connector_state(aconnector->base.state);
+
+			/* Scaling update */
+			update_stream_scaling_settings(
+					&crtc->state->mode,
+					dm_state,
+					acrtc->target->streams[0]);
+
+			break;
+		}
+		case DM_COMMIT_ACTION_DPMS_OFF:
+		case DM_COMMIT_ACTION_RESET:
+			DRM_INFO("Atomic commit: RESET. crtc id %d:[%p]\n", acrtc->crtc_id, acrtc);
+			/* i.e. reset mode */
+			if (acrtc->target)
+				remove_target(adev, acrtc);
+			break;
+		} /* switch() */
+	} /* for_each_crtc_in_state() */
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
+		if (acrtc->target) {
+			commit_targets[commit_targets_count] = acrtc->target;
+			++commit_targets_count;
+		}
+	}
+
+	/*
+	 * Add streams after required streams from new and replaced targets
+	 * are removed from freesync module
+	 */
+	if (adev->dm.freesync_module) {
+		for (i = 0; i < new_crtcs_count; i++) {
+			struct amdgpu_connector *aconnector = NULL;
+			new_target = new_crtcs[i]->target;
+			aconnector =
+				amdgpu_dm_find_first_crct_matching_connector(
+					state,
+					&new_crtcs[i]->base,
+					false);
+			if (!aconnector) {
+				DRM_INFO(
+						"Atomic commit: Failed to find connector for acrtc id:%d "
+						"skipping freesync init\n",
+						new_crtcs[i]->crtc_id);
+				continue;
+			}
+
+			for (j = 0; j < new_target->stream_count; j++)
+				mod_freesync_add_stream(
+						adev->dm.freesync_module,
+						new_target->streams[j], &aconnector->caps);
+		}
+	}
+
+	/* DC is optimized not to do anything if 'targets' didn't change. */
+	dc_commit_targets(dm->dc, commit_targets, commit_targets_count);
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
+		if (acrtc->target != NULL)
+			acrtc->otg_inst =
+				dc_target_get_status(acrtc->target)->primary_otg_inst;
+	}
+
+	/* update planes when needed */
+	for_each_plane_in_state(state, plane, old_plane_state, i) {
+		struct drm_plane_state *plane_state = plane->state;
+		struct drm_crtc *crtc = plane_state->crtc;
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+		struct drm_framebuffer *fb = plane_state->fb;
+		struct drm_connector *connector;
+		struct dm_connector_state *dm_state = NULL;
+		enum dm_commit_action action;
+
+		if (!fb || !crtc || !crtc->state->active)
+			continue;
+
+		action = get_dm_commit_action(crtc->state);
+
+		/* Surfaces are created under two scenarios:
+		 * 1. This commit is not a page flip.
+		 * 2. This commit is a page flip, and targets are created.
+		 */
+		if (!page_flip_needed(
+				plane_state,
+				old_plane_state,
+				crtc->state->event, true) ||
+				action == DM_COMMIT_ACTION_DPMS_ON ||
+				action == DM_COMMIT_ACTION_SET) {
+			list_for_each_entry(connector,
+				&dev->mode_config.connector_list, head)	{
+				if (connector->state->crtc == crtc) {
+					dm_state = to_dm_connector_state(
+						connector->state);
+					break;
+				}
+			}
+
+			/*
+			 * This situation happens in the following case:
+			 * we are about to get set mode for connector who's only
+			 * possible crtc (in encoder crtc mask) is used by
+			 * another connector, that is why it will try to
+			 * re-assing crtcs in order to make configuration
+			 * supported. For our implementation we need to make all
+			 * encoders support all crtcs, then this issue will
+			 * never arise again. But to guard code from this issue
+			 * check is left.
+			 *
+			 * Also it should be needed when used with actual
+			 * drm_atomic_commit ioctl in future
+			 */
+			if (!dm_state)
+				continue;
+
+			/*
+			 * if flip is pending (ie, still waiting for fence to return
+			 * before address is submitted) here, we cannot commit_surface
+			 * as commit_surface will pre-maturely write out the future
+			 * address. wait until flip is submitted before proceeding.
+			 */
+			wait_while_pflip_status(adev, acrtc, pflip_pending_predicate);
+
+			dm_dc_surface_commit(dm->dc, crtc);
+		}
+	}
+
+	for (i = 0; i < new_crtcs_count; i++) {
+		/*
+		 * loop to enable interrupts on newly arrived crtc
+		 */
+		struct amdgpu_crtc *acrtc = new_crtcs[i];
+
+		if (adev->dm.freesync_module) {
+			for (j = 0; j < acrtc->target->stream_count; j++)
+				mod_freesync_notify_mode_change(
+						adev->dm.freesync_module,
+						acrtc->target->streams,
+						acrtc->target->stream_count);
+		}
+
+		manage_dm_interrupts(adev, acrtc, true);
+		dm_crtc_cursor_reset(&acrtc->base);
+
+	}
+
+	/* Do actual flip */
+	flip_crtcs_count = 0;
+	for_each_plane_in_state(state, plane, old_plane_state, i) {
+		struct drm_plane_state *plane_state = plane->state;
+		struct drm_crtc *crtc = plane_state->crtc;
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+		struct drm_framebuffer *fb = plane_state->fb;
+
+		if (!fb || !crtc || !crtc->state->planes_changed ||
+			!crtc->state->active)
+			continue;
+
+		if (page_flip_needed(
+				plane_state,
+				old_plane_state,
+				crtc->state->event,
+				false)) {
+				amdgpu_crtc_submit_flip(
+							crtc,
+						    fb,
+						    work[flip_crtcs_count],
+						    new_abo[i]);
+				 flip_crtcs_count++;
+			/*clean up the flags for next usage*/
+			acrtc->flip_flags = 0;
+		}
+	}
+
+	/* In this state all old framebuffers would be unpinned */
+
+	/* TODO: Revisit when we support true asynchronous commit.*/
+	if (!async)
+		drm_atomic_helper_cleanup_planes(dev, state);
+
+	drm_atomic_state_put(state);
+
+	return ret;
+}
+/*
+ * This functions handle all cases when set mode does not come upon hotplug.
+ * This include when the same display is unplugged then plugged back into the
+ * same port and when we are running without usermode desktop manager supprot
+ */
+void dm_restore_drm_connector_state(struct drm_device *dev, struct drm_connector *connector)
+{
+	struct drm_crtc *crtc;
+	struct amdgpu_device *adev = dev->dev_private;
+	struct dc *dc = adev->dm.dc;
+	struct amdgpu_connector *aconnector = to_amdgpu_connector(connector);
+	struct amdgpu_crtc *disconnected_acrtc;
+	const struct dc_sink *sink;
+	struct dc_target *commit_targets[6];
+	struct dc_target *current_target;
+	uint32_t commit_targets_count = 0;
+	int i;
+
+	if (!aconnector->dc_sink || !connector->state || !connector->encoder)
+		return;
+
+	disconnected_acrtc = to_amdgpu_crtc(connector->encoder->crtc);
+
+	if (!disconnected_acrtc || !disconnected_acrtc->target)
+		return;
+
+	sink = disconnected_acrtc->target->streams[0]->sink;
+
+	/*
+	 * If the previous sink is not released and different from the current,
+	 * we deduce we are in a state where we can not rely on usermode call
+	 * to turn on the display, so we do it here
+	 */
+	if (sink != aconnector->dc_sink) {
+		struct dm_connector_state *dm_state =
+				to_dm_connector_state(aconnector->base.state);
+
+		struct dc_target *new_target =
+			create_target_for_sink(
+				aconnector,
+				&disconnected_acrtc->base.state->mode,
+				dm_state);
+
+		DRM_INFO("Headless hotplug, restoring connector state\n");
+		/*
+		 * we evade vblanks and pflips on crtc that
+		 * should be changed
+		 */
+		manage_dm_interrupts(adev, disconnected_acrtc, false);
+		/* this is the update mode case */
+
+		current_target = disconnected_acrtc->target;
+
+		disconnected_acrtc->target = new_target;
+		disconnected_acrtc->enabled = true;
+		disconnected_acrtc->hw_mode = disconnected_acrtc->base.state->mode;
+
+		commit_targets_count = 0;
+
+		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+			struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
+			if (acrtc->target) {
+				commit_targets[commit_targets_count] = acrtc->target;
+				++commit_targets_count;
+			}
+		}
+
+		/* DC is optimized not to do anything if 'targets' didn't change. */
+		if (!dc_commit_targets(dc, commit_targets,
+				commit_targets_count)) {
+			DRM_INFO("Failed to restore connector state!\n");
+			dc_target_release(disconnected_acrtc->target);
+			disconnected_acrtc->target = current_target;
+			manage_dm_interrupts(adev, disconnected_acrtc, true);
+			return;
+		}
+
+		if (adev->dm.freesync_module) {
+
+			for (i = 0; i < current_target->stream_count; i++)
+				mod_freesync_remove_stream(
+						adev->dm.freesync_module,
+						current_target->streams[i]);
+
+			for (i = 0; i < new_target->stream_count; i++)
+				mod_freesync_add_stream(
+						adev->dm.freesync_module,
+						new_target->streams[i],
+						&aconnector->caps);
+		}
+		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+			struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
+			if (acrtc->target != NULL) {
+				acrtc->otg_inst =
+					dc_target_get_status(acrtc->target)->primary_otg_inst;
+			}
+		}
+
+		dc_target_release(current_target);
+
+		dm_dc_surface_commit(dc, &disconnected_acrtc->base);
+
+		manage_dm_interrupts(adev, disconnected_acrtc, true);
+		dm_crtc_cursor_reset(&disconnected_acrtc->base);
+
+	}
+}
+
+static uint32_t add_val_sets_surface(
+	struct dc_validation_set *val_sets,
+	uint32_t set_count,
+	const struct dc_target *target,
+	const struct dc_surface *surface)
+{
+	uint32_t i = 0;
+
+	while (i < set_count) {
+		if (val_sets[i].target == target)
+			break;
+		++i;
+	}
+
+	val_sets[i].surfaces[val_sets[i].surface_count] = surface;
+	val_sets[i].surface_count++;
+
+	return val_sets[i].surface_count;
+}
+
+static uint32_t update_in_val_sets_target(
+	struct dc_validation_set *val_sets,
+	struct drm_crtc **crtcs,
+	uint32_t set_count,
+	const struct dc_target *old_target,
+	const struct dc_target *new_target,
+	struct drm_crtc *crtc)
+{
+	uint32_t i = 0;
+
+	while (i < set_count) {
+		if (val_sets[i].target == old_target)
+			break;
+		++i;
+	}
+
+	val_sets[i].target = new_target;
+	crtcs[i] = crtc;
+
+	if (i == set_count) {
+		/* nothing found. add new one to the end */
+		return set_count + 1;
+	}
+
+	return set_count;
+}
+
+static uint32_t remove_from_val_sets(
+	struct dc_validation_set *val_sets,
+	uint32_t set_count,
+	const struct dc_target *target)
+{
+	int i;
+
+	for (i = 0; i < set_count; i++)
+		if (val_sets[i].target == target)
+			break;
+
+	if (i == set_count) {
+		/* nothing found */
+		return set_count;
+	}
+
+	set_count--;
+
+	for (; i < set_count; i++) {
+		val_sets[i] = val_sets[i + 1];
+	}
+
+	return set_count;
+}
+
+int amdgpu_dm_atomic_check(struct drm_device *dev,
+			struct drm_atomic_state *state)
+{
+	struct drm_crtc *crtc;
+	struct drm_crtc_state *crtc_state;
+	struct drm_plane *plane;
+	struct drm_plane_state *plane_state;
+	int i, j;
+	int ret;
+	int set_count;
+	int new_target_count;
+	struct dc_validation_set set[MAX_TARGETS] = {{ 0 }};
+	struct dc_target *new_targets[MAX_TARGETS] = { 0 };
+	struct drm_crtc *crtc_set[MAX_TARGETS] = { 0 };
+	struct amdgpu_device *adev = dev->dev_private;
+	struct dc *dc = adev->dm.dc;
+	bool need_to_validate = false;
+
+	ret = drm_atomic_helper_check(dev, state);
+
+	if (ret) {
+		DRM_ERROR("Atomic state validation failed with error :%d !\n",
+				ret);
+		return ret;
+	}
+
+	ret = -EINVAL;
+
+	/* copy existing configuration */
+	new_target_count = 0;
+	set_count = 0;
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
+
+		if (acrtc->target) {
+			set[set_count].target = acrtc->target;
+			crtc_set[set_count] = crtc;
+			++set_count;
+		}
+	}
+
+	/* update changed items */
+	for_each_crtc_in_state(state, crtc, crtc_state, i) {
+		struct amdgpu_crtc *acrtc = NULL;
+		struct amdgpu_connector *aconnector = NULL;
+		enum dm_commit_action action;
+
+		acrtc = to_amdgpu_crtc(crtc);
+
+		aconnector = amdgpu_dm_find_first_crct_matching_connector(state, crtc, true);
+
+		action = get_dm_commit_action(crtc_state);
+
+		switch (action) {
+		case DM_COMMIT_ACTION_DPMS_ON:
+		case DM_COMMIT_ACTION_SET: {
+			struct dc_target *new_target = NULL;
+			struct drm_connector_state *conn_state = NULL;
+			struct dm_connector_state *dm_state = NULL;
+
+			if (aconnector) {
+				conn_state = drm_atomic_get_connector_state(state, &aconnector->base);
+				if (IS_ERR(conn_state))
+					return ret;
+				dm_state = to_dm_connector_state(conn_state);
+			}
+
+			new_target = create_target_for_sink(aconnector, &crtc_state->mode, dm_state);
+
+			/*
+			 * we can have no target on ACTION_SET if a display
+			 * was disconnected during S3, in this case it not and
+			 * error, the OS will be updated after detection, and
+			 * do the right thing on next atomic commit
+			 */
+			if (!new_target) {
+				DRM_DEBUG_KMS("%s: Failed to create new target for crtc %d\n",
+						__func__, acrtc->base.base.id);
+				break;
+			}
+
+			new_targets[new_target_count] = new_target;
+			set_count = update_in_val_sets_target(
+					set,
+					crtc_set,
+					set_count,
+					acrtc->target,
+					new_target,
+					crtc);
+
+			new_target_count++;
+			need_to_validate = true;
+			break;
+		}
+
+		case DM_COMMIT_ACTION_NOTHING: {
+			const struct drm_connector *drm_connector = NULL;
+			struct drm_connector_state *conn_state = NULL;
+			struct dm_connector_state *dm_state = NULL;
+			struct dm_connector_state *old_dm_state = NULL;
+			struct dc_target *new_target;
+
+			if (!aconnector)
+				break;
+
+			for_each_connector_in_state(
+				state, drm_connector, conn_state, j) {
+				if (&aconnector->base == drm_connector)
+					break;
+			}
+
+			old_dm_state = to_dm_connector_state(drm_connector->state);
+			dm_state = to_dm_connector_state(conn_state);
+
+			/* Support underscan adjustment*/
+			if (!is_scaling_state_different(dm_state, old_dm_state))
+				break;
+
+			new_target = create_target_for_sink(aconnector, &crtc_state->mode, dm_state);
+
+			if (!new_target) {
+				DRM_ERROR("%s: Failed to create new target for crtc %d\n",
+						__func__, acrtc->base.base.id);
+				break;
+			}
+
+			new_targets[new_target_count] = new_target;
+			set_count = update_in_val_sets_target(
+					set,
+					crtc_set,
+					set_count,
+					acrtc->target,
+					new_target,
+					crtc);
+
+			new_target_count++;
+			need_to_validate = true;
+
+			break;
+		}
+		case DM_COMMIT_ACTION_DPMS_OFF:
+		case DM_COMMIT_ACTION_RESET:
+			/* i.e. reset mode */
+			if (acrtc->target) {
+				set_count = remove_from_val_sets(
+						set,
+						set_count,
+						acrtc->target);
+			}
+			break;
+		}
+
+		/*
+		 * TODO revisit when removing commit action
+		 * and looking at atomic flags directly
+		 */
+
+		/* commit needs planes right now (for gamma, eg.) */
+		/* TODO rework commit to chack crtc for gamma change */
+		ret = drm_atomic_add_affected_planes(state, crtc);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < set_count; i++) {
+		for_each_plane_in_state(state, plane, plane_state, j) {
+			struct drm_plane_state *old_plane_state = plane->state;
+			struct drm_crtc *crtc = plane_state->crtc;
+			struct drm_framebuffer *fb = plane_state->fb;
+			struct drm_connector *connector;
+			struct dm_connector_state *dm_state = NULL;
+			enum dm_commit_action action;
+			struct drm_crtc_state *crtc_state;
+
+
+			if (!fb || !crtc || crtc_set[i] != crtc ||
+				!crtc->state->planes_changed || !crtc->state->active)
+				continue;
+
+			action = get_dm_commit_action(crtc->state);
+
+			/* Surfaces are created under two scenarios:
+			 * 1. This commit is not a page flip.
+			 * 2. This commit is a page flip, and targets are created.
+			 */
+			crtc_state = drm_atomic_get_crtc_state(state, crtc);
+			if (!page_flip_needed(plane_state, old_plane_state,
+					crtc_state->event, true) ||
+					action == DM_COMMIT_ACTION_DPMS_ON ||
+					action == DM_COMMIT_ACTION_SET) {
+				struct dc_surface *surface;
+
+				list_for_each_entry(connector,
+					&dev->mode_config.connector_list, head)	{
+					if (connector->state->crtc == crtc) {
+						dm_state = to_dm_connector_state(
+							connector->state);
+						break;
+					}
+				}
+
+				/*
+				 * This situation happens in the following case:
+				 * we are about to get set mode for connector who's only
+				 * possible crtc (in encoder crtc mask) is used by
+				 * another connector, that is why it will try to
+				 * re-assing crtcs in order to make configuration
+				 * supported. For our implementation we need to make all
+				 * encoders support all crtcs, then this issue will
+				 * never arise again. But to guard code from this issue
+				 * check is left.
+				 *
+				 * Also it should be needed when used with actual
+				 * drm_atomic_commit ioctl in future
+				 */
+				if (!dm_state)
+					continue;
+
+				surface = dc_create_surface(dc);
+				fill_plane_attributes(
+					surface,
+					plane_state,
+					false);
+
+				add_val_sets_surface(
+							set,
+							set_count,
+							set[i].target,
+							surface);
+
+				need_to_validate = true;
+			}
+		}
+	}
+
+	if (need_to_validate == false || set_count == 0 ||
+		dc_validate_resources(dc, set, set_count))
+		ret = 0;
+
+	for (i = 0; i < set_count; i++) {
+		for (j = 0; j < set[i].surface_count; j++) {
+			dc_surface_release(set[i].surfaces[j]);
+		}
+	}
+	for (i = 0; i < new_target_count; i++)
+		dc_target_release(new_targets[i]);
+
+	if (ret != 0)
+		DRM_ERROR("Atomic check failed.\n");
+
+	return ret;
+}
+
+static bool is_dp_capable_without_timing_msa(
+		struct dc *dc,
+		struct amdgpu_connector *amdgpu_connector)
+{
+	uint8_t dpcd_data;
+	bool capable = false;
+	if (amdgpu_connector->dc_link &&
+	    dc_read_dpcd(dc, amdgpu_connector->dc_link->link_index,
+			 DP_DOWN_STREAM_PORT_COUNT,
+			 &dpcd_data, sizeof(dpcd_data)) )
+		capable = dpcd_data & DP_MSA_TIMING_PAR_IGNORED? true:false;
+
+	return capable;
+}
+void amdgpu_dm_add_sink_to_freesync_module(
+		struct drm_connector *connector,
+		struct edid *edid)
+{
+	int i;
+	uint64_t val_capable;
+	bool edid_check_required;
+	struct detailed_timing *timing;
+	struct detailed_non_pixel *data;
+	struct detailed_data_monitor_range *range;
+	struct amdgpu_connector *amdgpu_connector =
+			to_amdgpu_connector(connector);
+
+	struct drm_device *dev = connector->dev;
+	struct amdgpu_device *adev = dev->dev_private;
+	edid_check_required = false;
+	if (!amdgpu_connector->dc_sink) {
+		DRM_ERROR("dc_sink NULL, could not add free_sync module.\n");
+		return;
+	}
+	if (!adev->dm.freesync_module)
+		return;
+	/*
+	 * if edid non zero restrict freesync only for dp and edp
+	 */
+	if (edid) {
+		if (amdgpu_connector->dc_sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT
+			|| amdgpu_connector->dc_sink->sink_signal == SIGNAL_TYPE_EDP) {
+			edid_check_required = is_dp_capable_without_timing_msa(
+						adev->dm.dc,
+						amdgpu_connector);
+		}
+	}
+	val_capable = 0;
+	if (edid_check_required == true && (edid->version > 1 ||
+	   (edid->version == 1 && edid->revision > 1))) {
+		for (i = 0; i < 4; i++) {
+
+			timing	= &edid->detailed_timings[i];
+			data	= &timing->data.other_data;
+			range	= &data->data.range;
+			/*
+			 * Check if monitor has continuous frequency mode
+			 */
+			if (data->type != EDID_DETAIL_MONITOR_RANGE)
+				continue;
+			/*
+			 * Check for flag range limits only. If flag == 1 then
+			 * no additional timing information provided.
+			 * Default GTF, GTF Secondary curve and CVT are not
+			 * supported
+			 */
+			if (range->flags != 1)
+				continue;
+
+			amdgpu_connector->min_vfreq = range->min_vfreq;
+			amdgpu_connector->max_vfreq = range->max_vfreq;
+			amdgpu_connector->pixel_clock_mhz =
+				range->pixel_clock_mhz * 10;
+			break;
+		}
+
+		if (amdgpu_connector->max_vfreq -
+				amdgpu_connector->min_vfreq > 10) {
+			amdgpu_connector->caps.supported = true;
+			amdgpu_connector->caps.min_refresh_in_micro_hz =
+					amdgpu_connector->min_vfreq * 1000000;
+			amdgpu_connector->caps.max_refresh_in_micro_hz =
+					amdgpu_connector->max_vfreq * 1000000;
+				val_capable = 1;
+		}
+	}
+
+	/*
+	 * TODO figure out how to notify user-mode or DRM of freesync caps
+	 * once we figure out how to deal with freesync in an upstreamable
+	 * fashion
+	 */
+
+}
+
+void amdgpu_dm_remove_sink_from_freesync_module(
+		struct drm_connector *connector)
+{
+	/*
+	 * TODO fill in once we figure out how to deal with freesync in
+	 * an upstreamable fashion
+	 */
+}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h
new file mode 100644
index 000000000000..4f7bd3bae44e
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2012-13 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 __AMDGPU_DM_TYPES_H__
+#define __AMDGPU_DM_TYPES_H__
+
+#include <drm/drmP.h>
+
+struct amdgpu_framebuffer;
+struct amdgpu_display_manager;
+struct dc_validation_set;
+struct dc_surface;
+
+/*TODO Jodan Hersen use the one in amdgpu_dm*/
+int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
+			struct amdgpu_crtc *amdgpu_crtc,
+			uint32_t link_index);
+int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
+			struct amdgpu_connector *amdgpu_connector,
+			uint32_t link_index,
+			struct amdgpu_encoder *amdgpu_encoder);
+int amdgpu_dm_encoder_init(
+	struct drm_device *dev,
+	struct amdgpu_encoder *aencoder,
+	uint32_t link_index);
+
+void amdgpu_dm_crtc_destroy(struct drm_crtc *crtc);
+void amdgpu_dm_connector_destroy(struct drm_connector *connector);
+void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder);
+
+int amdgpu_dm_connector_get_modes(struct drm_connector *connector);
+
+int amdgpu_dm_atomic_commit(
+	struct drm_device *dev,
+	struct drm_atomic_state *state,
+	bool async);
+int amdgpu_dm_atomic_check(struct drm_device *dev,
+				struct drm_atomic_state *state);
+
+int dm_create_validation_set_for_target(
+	struct drm_connector *connector,
+	struct drm_display_mode *mode,
+	struct dc_validation_set *val_set);
+
+void amdgpu_dm_connector_funcs_reset(struct drm_connector *connector);
+struct drm_connector_state *amdgpu_dm_connector_atomic_duplicate_state(
+	struct drm_connector *connector);
+
+int amdgpu_dm_connector_atomic_set_property(
+	struct drm_connector *connector,
+	struct drm_connector_state *state,
+	struct drm_property *property,
+	uint64_t val);
+
+int amdgpu_dm_get_encoder_crtc_mask(struct amdgpu_device *adev);
+
+void amdgpu_dm_connector_init_helper(
+	struct amdgpu_display_manager *dm,
+	struct amdgpu_connector *aconnector,
+	int connector_type,
+	const struct dc_link *link,
+	int link_index);
+
+int amdgpu_dm_connector_mode_valid(
+	struct drm_connector *connector,
+	struct drm_display_mode *mode);
+
+void dm_restore_drm_connector_state(struct drm_device *dev, struct drm_connector *connector);
+
+void amdgpu_dm_add_sink_to_freesync_module(
+		struct drm_connector *connector,
+		struct edid *edid);
+
+void amdgpu_dm_remove_sink_from_freesync_module(
+		struct drm_connector *connector);
+
+extern const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs;
+
+#endif		/* __AMDGPU_DM_TYPES_H__ */