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

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -41,3 +41,4 @@ config DRM_AMDGPU_GART_DEBUGFS
 	  pages. Uses more memory for housekeeping, enable only for debugging.
 
 source "drivers/gpu/drm/amd/acp/Kconfig"
+source "drivers/gpu/drm/amd/display/Kconfig"

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -3,13 +3,19 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 FULL_AMD_PATH=$(src)/..
+DISPLAY_FOLDER_NAME=display
+FULL_AMD_DISPLAY_PATH = $(FULL_AMD_PATH)/$(DISPLAY_FOLDER_NAME)
 
 ccflags-y := -I$(FULL_AMD_PATH)/include/asic_reg \
 	-I$(FULL_AMD_PATH)/include \
 	-I$(FULL_AMD_PATH)/amdgpu \
 	-I$(FULL_AMD_PATH)/scheduler \
 	-I$(FULL_AMD_PATH)/powerplay/inc \
-	-I$(FULL_AMD_PATH)/acp/include
+	-I$(FULL_AMD_PATH)/acp/include \
+	-I$(FULL_AMD_DISPLAY_PATH) \
+	-I$(FULL_AMD_DISPLAY_PATH)/include \
+	-I$(FULL_AMD_DISPLAY_PATH)/dc \
+	-I$(FULL_AMD_DISPLAY_PATH)/amdgpu_dm
 
 amdgpu-y := amdgpu_drv.o
 
@@ -132,4 +138,13 @@ include $(FULL_AMD_PATH)/powerplay/Makefile
 
 amdgpu-y += $(AMD_POWERPLAY_FILES)
 
+ifneq ($(CONFIG_DRM_AMD_DC),)
+
+RELATIVE_AMD_DISPLAY_PATH = ../$(DISPLAY_FOLDER_NAME)
+include $(FULL_AMD_DISPLAY_PATH)/Makefile
+
+amdgpu-y += $(AMD_DISPLAY_FILES)
+
+endif
+
 obj-$(CONFIG_DRM_AMDGPU)+= amdgpu.o

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -66,6 +66,7 @@
 #include "amdgpu_vce.h"
 #include "amdgpu_vcn.h"
 #include "amdgpu_mn.h"
+#include "amdgpu_dm.h"
 
 #include "gpu_scheduler.h"
 #include "amdgpu_virt.h"
@@ -101,6 +102,7 @@ extern int amdgpu_vm_fragment_size;
 extern int amdgpu_vm_fault_stop;
 extern int amdgpu_vm_debug;
 extern int amdgpu_vm_update_mode;
+extern int amdgpu_dc;
 extern int amdgpu_sched_jobs;
 extern int amdgpu_sched_hw_submission;
 extern int amdgpu_no_evict;
@@ -1507,6 +1509,7 @@ struct amdgpu_device {
 	/* display */
 	bool				enable_virtual_display;
 	struct amdgpu_mode_info		mode_info;
+	/* For pre-DCE11. DCE11 and later are in "struct amdgpu_device->dm" */
 	struct work_struct		hotplug_work;
 	struct amdgpu_irq_src		crtc_irq;
 	struct amdgpu_irq_src		pageflip_irq;
@@ -1563,6 +1566,9 @@ struct amdgpu_device {
 	/* GDS */
 	struct amdgpu_gds		gds;
 
+	/* display related functionality */
+	struct amdgpu_display_manager dm;
+
 	struct amdgpu_ip_block          ip_blocks[AMDGPU_MAX_IP_NUM];
 	int				num_ip_blocks;
 	struct mutex	mn_lock;
@@ -1624,6 +1630,9 @@ void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v);
 u64 amdgpu_mm_rdoorbell64(struct amdgpu_device *adev, u32 index);
 void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v);
 
+bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type);
+bool amdgpu_device_has_dc_support(struct amdgpu_device *adev);
+
 /*
  * Registers read & write functions.
  */
@@ -1884,5 +1893,11 @@ int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
 			   uint64_t addr, struct amdgpu_bo **bo,
 			   struct amdgpu_bo_va_mapping **mapping);
 
+#if defined(CONFIG_DRM_AMD_DC)
+int amdgpu_dm_display_resume(struct amdgpu_device *adev );
+#else
+static inline int amdgpu_dm_display_resume(struct amdgpu_device *adev) { return 0; }
+#endif
+
 #include "amdgpu_object.h"
 #endif

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -31,6 +31,7 @@
 #include <linux/debugfs.h>
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_atomic_helper.h>
 #include <drm/amdgpu_drm.h>
 #include <linux/vgaarb.h>
 #include <linux/vga_switcheroo.h>
@@ -1973,6 +1974,41 @@ static void amdgpu_device_detect_sriov_bios(struct amdgpu_device *adev)
 	}
 }
 
+bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type)
+{
+	switch (asic_type) {
+#if defined(CONFIG_DRM_AMD_DC)
+	case CHIP_BONAIRE:
+	case CHIP_HAWAII:
+	case CHIP_CARRIZO:
+	case CHIP_STONEY:
+	case CHIP_POLARIS11:
+	case CHIP_POLARIS10:
+	case CHIP_TONGA:
+	case CHIP_FIJI:
+#if defined(CONFIG_DRM_AMD_DC_PRE_VEGA)
+		return amdgpu_dc != 0;
+#else
+		return amdgpu_dc > 0;
+#endif
+#endif
+	default:
+		return false;
+	}
+}
+
+/**
+ * amdgpu_device_has_dc_support - check if dc is supported
+ *
+ * @adev: amdgpu_device_pointer
+ *
+ * Returns true for supported, false for not supported
+ */
+bool amdgpu_device_has_dc_support(struct amdgpu_device *adev)
+{
+	return amdgpu_device_asic_has_dc_support(adev->asic_type);
+}
+
 /**
  * amdgpu_device_init - initialize the driver
  *
@@ -2168,7 +2204,8 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 			goto failed;
 		}
 		/* init i2c buses */
-		amdgpu_atombios_i2c_init(adev);
+		if (!amdgpu_device_has_dc_support(adev))
+			amdgpu_atombios_i2c_init(adev);
 	}
 
 	/* Fence driver */
@@ -2296,7 +2333,8 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
 	adev->accel_working = false;
 	cancel_delayed_work_sync(&adev->late_init_work);
 	/* free i2c buses */
-	amdgpu_i2c_fini(adev);
+	if (!amdgpu_device_has_dc_support(adev))
+		amdgpu_i2c_fini(adev);
 	amdgpu_atombios_fini(adev);
 	kfree(adev->bios);
 	adev->bios = NULL;
@@ -2346,12 +2384,14 @@ int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon)
 
 	drm_kms_helper_poll_disable(dev);
 
-	/* turn off display hw */
-	drm_modeset_lock_all(dev);
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+	if (!amdgpu_device_has_dc_support(adev)) {
+		/* turn off display hw */
+		drm_modeset_lock_all(dev);
+		list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+			drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+		}
+		drm_modeset_unlock_all(dev);
 	}
-	drm_modeset_unlock_all(dev);
 
 	amdgpu_amdkfd_suspend(adev);
 
@@ -2494,13 +2534,25 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
 
 	/* blat the mode back in */
 	if (fbcon) {
-		drm_helper_resume_force_mode(dev);
-		/* turn on display hw */
-		drm_modeset_lock_all(dev);
-		list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-			drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+		if (!amdgpu_device_has_dc_support(adev)) {
+			/* pre DCE11 */
+			drm_helper_resume_force_mode(dev);
+
+			/* turn on display hw */
+			drm_modeset_lock_all(dev);
+			list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+				drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+			}
+			drm_modeset_unlock_all(dev);
+		} else {
+			/*
+			 * There is no equivalent atomic helper to turn on
+			 * display, so we defined our own function for this,
+			 * once suspend resume is supported by the atomic
+			 * framework this will be reworked
+			 */
+			amdgpu_dm_display_resume(adev);
 		}
-		drm_modeset_unlock_all(dev);
 	}
 
 	drm_kms_helper_poll_enable(dev);
@@ -2517,7 +2569,10 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
 #ifdef CONFIG_PM
 	dev->dev->power.disable_depth++;
 #endif
-	drm_helper_hpd_irq_event(dev);
+	if (!amdgpu_device_has_dc_support(adev))
+		drm_helper_hpd_irq_event(dev);
+	else
+		drm_kms_helper_hotplug_event(dev);
 #ifdef CONFIG_PM
 	dev->dev->power.disable_depth--;
 #endif
@@ -2814,6 +2869,7 @@ int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, struct amdgpu_job *job)
  */
 int amdgpu_gpu_reset(struct amdgpu_device *adev)
 {
+	struct drm_atomic_state *state = NULL;
 	int i, r;
 	int resched;
 	bool need_full_reset, vram_lost = false;
@@ -2827,6 +2883,9 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
 
 	/* block TTM */
 	resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
+	/* store modesetting */
+	if (amdgpu_device_has_dc_support(adev))
+		state = drm_atomic_helper_suspend(adev->ddev);
 
 	/* block scheduler */
 	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
@@ -2944,7 +3003,11 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
 		}
 	}
 
-	drm_helper_resume_force_mode(adev->ddev);
+	if (amdgpu_device_has_dc_support(adev)) {
+		r = drm_atomic_helper_resume(adev->ddev, state);
+		amdgpu_dm_display_resume(adev);
+	} else
+		drm_helper_resume_force_mode(adev->ddev);
 
 	ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
 	if (r) {

drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h

@@ -429,7 +429,7 @@ struct amdgpu_pm {
 	uint32_t                fw_version;
 	uint32_t                pcie_gen_mask;
 	uint32_t                pcie_mlw_mask;
-	struct amd_pp_display_configuration pm_display_cfg;/* set by DAL */
+	struct amd_pp_display_configuration pm_display_cfg;/* set by dc */
 };
 
 #define R600_SSTU_DFLT                               0

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -103,6 +103,7 @@ int amdgpu_vm_debug = 0;
 int amdgpu_vram_page_split = 512;
 int amdgpu_vm_update_mode = -1;
 int amdgpu_exp_hw_support = 0;
+int amdgpu_dc = -1;
 int amdgpu_sched_jobs = 32;
 int amdgpu_sched_hw_submission = 2;
 int amdgpu_no_evict = 0;
@@ -207,6 +208,9 @@ module_param_named(vram_page_split, amdgpu_vram_page_split, int, 0444);
 MODULE_PARM_DESC(exp_hw_support, "experimental hw support (1 = enable, 0 = disable (default))");
 module_param_named(exp_hw_support, amdgpu_exp_hw_support, int, 0444);
 
+MODULE_PARM_DESC(dc, "Display Core driver (1 = enable, 0 = disable, -1 = auto (default))");
+module_param_named(dc, amdgpu_dc, int, 0444);
+
 MODULE_PARM_DESC(sched_jobs, "the max number of jobs supported in the sw queue (default 32)");
 module_param_named(sched_jobs, amdgpu_sched_jobs, int, 0444);
 

drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c

@@ -42,11 +42,6 @@
    this contains a helper + a amdgpu fb
    the helper contains a pointer to amdgpu framebuffer baseclass.
 */
-struct amdgpu_fbdev {
-	struct drm_fb_helper helper;
-	struct amdgpu_framebuffer rfb;
-	struct amdgpu_device *adev;
-};
 
 static int
 amdgpufb_open(struct fb_info *info, int user)

drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c

@@ -37,6 +37,10 @@
 
 #include <linux/pm_runtime.h>
 
+#ifdef CONFIG_DRM_AMD_DC
+#include "amdgpu_dm_irq.h"
+#endif
+
 #define AMDGPU_WAIT_IDLE_TIMEOUT 200
 
 /*
@@ -221,15 +225,6 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
 
 	spin_lock_init(&adev->irq.lock);
 
-	if (!adev->enable_virtual_display)
-		/* Disable vblank irqs aggressively for power-saving */
-		adev->ddev->vblank_disable_immediate = true;
-
-	r = drm_vblank_init(adev->ddev, adev->mode_info.num_crtc);
-	if (r) {
-		return r;
-	}
-
 	/* enable msi */
 	adev->irq.msi_enabled = false;
 
@@ -241,7 +236,21 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
 		}
 	}
 
-	INIT_WORK(&adev->hotplug_work, amdgpu_hotplug_work_func);
+	if (!amdgpu_device_has_dc_support(adev)) {
+		if (!adev->enable_virtual_display)
+			/* Disable vblank irqs aggressively for power-saving */
+			/* XXX: can this be enabled for DC? */
+			adev->ddev->vblank_disable_immediate = true;
+
+		r = drm_vblank_init(adev->ddev, adev->mode_info.num_crtc);
+		if (r)
+			return r;
+
+		/* pre DCE11 */
+		INIT_WORK(&adev->hotplug_work,
+				amdgpu_hotplug_work_func);
+	}
+
 	INIT_WORK(&adev->reset_work, amdgpu_irq_reset_work_func);
 
 	adev->irq.installed = true;

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

@@ -1034,7 +1034,7 @@ const struct drm_ioctl_desc amdgpu_ioctls_kms[] = {
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_METADATA, amdgpu_gem_metadata_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_VA, amdgpu_gem_va_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_OP, amdgpu_gem_op_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
-	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_USERPTR, amdgpu_gem_userptr_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(AMDGPU_GEM_USERPTR, amdgpu_gem_userptr_ioctl, DRM_AUTH|DRM_RENDER_ALLOW)
 };
 const int amdgpu_max_kms_ioctl = ARRAY_SIZE(amdgpu_ioctls_kms);
 

drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h

@@ -38,11 +38,15 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_plane_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
 #include <linux/hrtimer.h>
 #include "amdgpu_irq.h"
 
+#include <drm/drm_dp_mst_helper.h>
+#include "modules/inc/mod_freesync.h"
+
 struct amdgpu_bo;
 struct amdgpu_device;
 struct amdgpu_encoder;
@@ -292,6 +296,27 @@ struct amdgpu_display_funcs {
 			      uint16_t connector_object_id,
 			      struct amdgpu_hpd *hpd,
 			      struct amdgpu_router *router);
+	/* it is used to enter or exit into free sync mode */
+	int (*notify_freesync)(struct drm_device *dev, void *data,
+			       struct drm_file *filp);
+	/* it is used to allow enablement of freesync mode */
+	int (*set_freesync_property)(struct drm_connector *connector,
+				     struct drm_property *property,
+				     uint64_t val);
+
+
+};
+
+struct amdgpu_framebuffer {
+	struct drm_framebuffer base;
+	struct drm_gem_object *obj;
+};
+
+struct amdgpu_fbdev {
+	struct drm_fb_helper helper;
+	struct amdgpu_framebuffer rfb;
+	struct list_head fbdev_list;
+	struct amdgpu_device *adev;
 };
 
 struct amdgpu_mode_info {
@@ -400,6 +425,11 @@ struct amdgpu_crtc {
 	/* for virtual dce */
 	struct hrtimer vblank_timer;
 	enum amdgpu_interrupt_state vsync_timer_enabled;
+
+	int otg_inst;
+	uint32_t flip_flags;
+	/* After Set Mode target will be non-NULL */
+	struct dc_target *target;
 };
 
 struct amdgpu_encoder_atom_dig {
@@ -489,6 +519,19 @@ enum amdgpu_connector_dither {
 	AMDGPU_FMT_DITHER_ENABLE = 1,
 };
 
+struct amdgpu_dm_dp_aux {
+	struct drm_dp_aux aux;
+	uint32_t link_index;
+};
+
+struct amdgpu_i2c_adapter {
+	struct i2c_adapter base;
+	struct amdgpu_display_manager *dm;
+	uint32_t link_index;
+};
+
+#define TO_DM_AUX(x) container_of((x), struct amdgpu_dm_dp_aux, aux)
+
 struct amdgpu_connector {
 	struct drm_connector base;
 	uint32_t connector_id;
@@ -500,6 +543,14 @@ struct amdgpu_connector {
 	/* we need to mind the EDID between detect
 	   and get modes due to analog/digital/tvencoder */
 	struct edid *edid;
+	/* number of modes generated from EDID at 'dc_sink' */
+	int num_modes;
+	/* The 'old' sink - before an HPD.
+	 * The 'current' sink is in dc_link->sink. */
+	const struct dc_sink *dc_sink;
+	const struct dc_link *dc_link;
+	const struct dc_sink *dc_em_sink;
+	const struct dc_target *target;
 	void *con_priv;
 	bool dac_load_detect;
 	bool detected_by_load; /* if the connection status was determined by load */
@@ -510,11 +561,39 @@ struct amdgpu_connector {
 	enum amdgpu_connector_audio audio;
 	enum amdgpu_connector_dither dither;
 	unsigned pixelclock_for_modeset;
+
+	struct drm_dp_mst_topology_mgr mst_mgr;
+	struct amdgpu_dm_dp_aux dm_dp_aux;
+	struct drm_dp_mst_port *port;
+	struct amdgpu_connector *mst_port;
+	struct amdgpu_encoder *mst_encoder;
+	struct semaphore mst_sem;
+
+	/* TODO see if we can merge with ddc_bus or make a dm_connector */
+	struct amdgpu_i2c_adapter *i2c;
+
+	/* Monitor range limits */
+	int min_vfreq ;
+	int max_vfreq ;
+	int pixel_clock_mhz;
+
+	/*freesync caps*/
+	struct mod_freesync_caps caps;
+
+	struct mutex hpd_lock;
+
 };
 
-struct amdgpu_framebuffer {
-	struct drm_framebuffer base;
-	struct drm_gem_object *obj;
+/* TODO: start to use this struct and remove same field from base one */
+struct amdgpu_mst_connector {
+	struct amdgpu_connector base;
+
+	struct drm_dp_mst_topology_mgr mst_mgr;
+	struct amdgpu_dm_dp_aux dm_dp_aux;
+	struct drm_dp_mst_port *port;
+	struct amdgpu_connector *mst_port;
+	bool is_mst_connector;
+	struct amdgpu_encoder *mst_encoder;
 };
 
 #define ENCODER_MODE_IS_DP(em) (((em) == ATOM_ENCODER_MODE_DP) || \

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

@@ -1467,7 +1467,7 @@ void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)
 			list_for_each_entry(crtc,
 					    &ddev->mode_config.crtc_list, head) {
 				amdgpu_crtc = to_amdgpu_crtc(crtc);
-				if (crtc->enabled) {
+				if (amdgpu_crtc->enabled) {
 					adev->pm.dpm.new_active_crtcs |= (1 << amdgpu_crtc->crtc_id);
 					adev->pm.dpm.new_active_crtc_count++;
 				}

drivers/gpu/drm/amd/amdgpu/cik.c

@@ -65,6 +65,7 @@
 #include "oss/oss_2_0_d.h"
 #include "oss/oss_2_0_sh_mask.h"
 
+#include "amdgpu_dm.h"
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_powerplay.h"
 #include "dce_virtual.h"
@@ -1900,6 +1901,10 @@ int cik_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display)
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v8_2_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v7_2_ip_block);
@@ -1914,6 +1919,10 @@ int cik_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display)
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v8_5_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v7_3_ip_block);

drivers/gpu/drm/amd/amdgpu/vi.c

@@ -77,6 +77,7 @@
 #endif
 #include "dce_virtual.h"
 #include "mxgpu_vi.h"
+#include "amdgpu_dm.h"
 
 /*
  * Indirect registers accessor
@@ -1496,6 +1497,10 @@ int vi_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display || amdgpu_sriov_vf(adev))
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v10_1_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v8_0_ip_block);
@@ -1512,6 +1517,10 @@ int vi_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display || amdgpu_sriov_vf(adev))
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v10_0_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v8_0_ip_block);
@@ -1530,6 +1539,10 @@ int vi_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display)
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v11_2_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v8_0_ip_block);
@@ -1544,6 +1557,10 @@ int vi_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display)
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v11_0_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v8_0_ip_block);
@@ -1561,6 +1578,10 @@ int vi_set_ip_blocks(struct amdgpu_device *adev)
 		amdgpu_ip_block_add(adev, &amdgpu_pp_ip_block);
 		if (adev->enable_virtual_display)
 			amdgpu_ip_block_add(adev, &dce_virtual_ip_block);
+#if defined(CONFIG_DRM_AMD_DC)
+		else if (amdgpu_device_has_dc_support(adev))
+			amdgpu_ip_block_add(adev, &dm_ip_block);
+#endif
 		else
 			amdgpu_ip_block_add(adev, &dce_v11_0_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v8_1_ip_block);

drivers/gpu/drm/amd/display/Kconfig

+menu "Display Engine Configuration"
+	depends on DRM && DRM_AMDGPU
+
+config DRM_AMD_DC
+	bool "AMD DC - Enable new display engine"
+	default y
+	help
+	  Choose this option if you want to use the new display engine
+	  support for AMDGPU. This adds required support for Vega and
+	  Raven ASICs.
+
+config DRM_AMD_DC_PRE_VEGA
+	bool "DC support for Polaris and older ASICs"
+	default n
+	help
+	  Choose this option to enable the new DC support for older asics
+	  by default. This includes Polaris, Carrizo, Tonga, Bonaire,
+	  and Hawaii.
+
+config DEBUG_KERNEL_DC
+	bool "Enable kgdb break in DC"
+	depends on DRM_AMD_DC
+	help
+	  Choose this option
+	  if you want to hit
+	  kdgb_break in assert.
+
+endmenu

drivers/gpu/drm/amd/display/Makefile

+#
+# Makefile for the DAL (Display Abstract Layer), which is a  sub-component
+# of the AMDGPU drm driver.
+# It provides the HW control for display related functionalities.
+
+AMDDALPATH = $(RELATIVE_AMD_DISPLAY_PATH)
+
+subdir-ccflags-y += -I$(AMDDALPATH)/ -I$(AMDDALPATH)/include
+
+subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/dc/inc/
+subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/dc/inc/hw
+subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/inc
+subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/freesync
+
+#TODO: remove when Timing Sync feature is complete
+subdir-ccflags-y += -DBUILD_FEATURE_TIMING_SYNC=0
+
+DAL_LIBS = amdgpu_dm dc	modules/freesync
+
+AMD_DAL = $(addsuffix /Makefile, $(addprefix $(FULL_AMD_DISPLAY_PATH)/,$(DAL_LIBS)))
+
+include $(AMD_DAL)

drivers/gpu/drm/amd/display/amdgpu_dm/Makefile

+#
+# 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)

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

+/*
+ * 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__ */

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

+/*
+ * 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;
+}

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h

+/*
+ * 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__ */

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c

+/*
+ * 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);
+}
+

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h

+/*
+ * 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

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c

+/*
+ * 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;
+}

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h

+/*
+ * 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__ */

drivers/gpu/drm/amd/display/dc/Makefile

+#
+# Makefile for Display Core (dc) component.
+#
+
+DC_LIBS = basics bios calcs dce \
+gpio gpu i2caux irq virtual
+
+DC_LIBS += dce112
+DC_LIBS += dce110
+DC_LIBS += dce100
+DC_LIBS += dce80
+
+AMD_DC = $(addsuffix /Makefile, $(addprefix $(FULL_AMD_DISPLAY_PATH)/dc/,$(DC_LIBS)))
+
+include $(AMD_DC)
+
+DISPLAY_CORE = dc.o dc_link.o dc_resource.o dc_hw_sequencer.o dc_target.o dc_sink.o dc_stream.o \
+dc_surface.o dc_link_hwss.o dc_link_dp.o dc_link_ddc.o dc_debug.o
+
+AMD_DISPLAY_CORE = $(addprefix $(AMDDALPATH)/dc/core/,$(DISPLAY_CORE))
+
+AMD_DM_REG_UPDATE = $(addprefix $(AMDDALPATH)/dc/,dc_helper.o)
+
+AMD_DISPLAY_FILES += $(AMD_DISPLAY_CORE)
+AMD_DISPLAY_FILES += $(AMD_DM_REG_UPDATE)
+
+
+

drivers/gpu/drm/amd/display/dc/basics/Makefile

+#
+# Makefile for the 'utils' sub-component of DAL.
+# It provides the general basic services required by other DAL
+# subcomponents.
+
+BASICS = conversion.o fixpt31_32.o fixpt32_32.o grph_object_id.o \
+	logger.o log_helpers.o register_logger.o signal_types.o vector.o
+
+AMD_DAL_BASICS = $(addprefix $(AMDDALPATH)/dc/basics/,$(BASICS))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_BASICS)

drivers/gpu/drm/amd/display/dc/basics/conversion.h

+/*
+ * 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_CONVERSION_H__
+#define __DAL_CONVERSION_H__
+
+#include "include/fixed31_32.h"
+
+uint16_t fixed_point_to_int_frac(
+	struct fixed31_32 arg,
+	uint8_t integer_bits,
+	uint8_t fractional_bits);
+
+void convert_float_matrix(
+	uint16_t *matrix,
+	struct fixed31_32 *flt,
+	uint32_t buffer_size);
+
+void calculate_adjustments(
+	const struct fixed31_32 *ideal_matrix,
+	const struct dc_csc_adjustments *adjustments,
+	struct fixed31_32 *matrix);
+
+void calculate_adjustments_y_only(
+	const struct fixed31_32 *ideal_matrix,
+	const struct dc_csc_adjustments *adjustments,
+	struct fixed31_32 *matrix);
+
+#endif

drivers/gpu/drm/amd/display/dc/basics/logger.h

+/*
+ * 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_LOGGER_H__
+#define __DAL_LOGGER_H__
+
+/* Structure for keeping track of offsets, buffer, etc */
+
+#define DAL_LOGGER_BUFFER_MAX_SIZE 2048
+
+/*Connectivity log needs to output EDID, which needs at lease 256x3 bytes,
+ * change log line size to 896 to meet the request.
+ */
+#define LOG_MAX_LINE_SIZE 896
+
+#include "include/logger_types.h"
+
+struct dal_logger {
+
+	/* How far into the circular buffer has been read by dsat
+	 * Read offset should never cross write offset. Write \0's to
+	 * read data just to be sure?
+	 */
+	uint32_t buffer_read_offset;
+
+	/* How far into the circular buffer we have written
+	 * Write offset should never cross read offset
+	 */
+	uint32_t buffer_write_offset;
+
+	uint32_t write_wrap_count;
+	uint32_t read_wrap_count;
+
+	uint32_t open_count;
+
+	char *log_buffer;	/* Pointer to malloc'ed buffer */
+	uint32_t log_buffer_size; /* Size of circular buffer */
+
+	uint32_t mask; /*array of masks for major elements*/
+
+	union logger_flags flags;
+	struct dc_context *ctx;
+};
+
+#endif /* __DAL_LOGGER_H__ */

drivers/gpu/drm/amd/display/dc/calcs/Makefile

+#
+# Makefile for the 'calcs' sub-component of DAL.
+# It calculates Bandwidth and Watermarks values for HW programming
+#
+
+BW_CALCS = bandwidth_calcs.o bw_fixed.o gamma_calcs.o
+
+AMD_DAL_BW_CALCS = $(addprefix $(AMDDALPATH)/dc/calcs/,$(BW_CALCS))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_BW_CALCS)