Merge tag 'drm-for-v4.15-amd-dc' of git://people.freedesktop.org/~airlied/linux

Pull amdgpu DC display code for Vega from Dave Airlie:
 "This is the pull request for the AMD DC (display code) layer which is
  a requirement to program the display engines on the new Vega and Raven
  based GPUs. It also contains support for all amdgpu supported GPUs
  (CIK, VI, Polaris), which has to be enabled. It is also a kms atomic
  modesetting compatible driver (unlike the current in-tree display
  code).

  I've kept it separate from drm-next because it may have some things
  that cause you to reject it.

  Background story:

  AMD have an internal team creating a shared OS codebase for display at
  hw bring up time using information from their hardware teams. This
  process doesn't lead to the most Linux friendly/looking code but we
  have worked together on cleaning a lot of it up and dealing with
  sparse/smatch/checkpatch, and having their team internally adhere to
  Linux coding standards.

  This tree is a complete history rebased since they started opening it,
  we decided not to squash it down as the history may have some value.
  Some of the commits therefore might not reach kernel standards, and we
  are steadily training people in AMD to better write commit msgs.

  There is a major bunch of generated bandwidth calculation and
  verification code that comes from their hardware team. On Vega and
  before this is float calculations, on Raven (DCN10) this is double
  based. They do the required things to do FP in the kernel, and I could
  understand this might raise some issues. Rewriting the bandwidth would
  be a major undertaken in reverification, it's non-trivial to work out
  if a display can handle the complete set of mode information thrown at
  it.

  Future story:

  There is a TODO list with this, and it address most of the remaining
  things that would be nice to refine/remove. The DCN10 code is still
  under development internally and they push out a lot of patches quite
  regularly and are supporting this code base with their display team. I
  think we've reached the point where keeping it out of tree is going to
  motivate distributions to start carrying the code, so I'd prefer we
  get it in tree. I think this code is slightly better than STAGING
  quality but not massively so, I'd really like to see that float/double
  magic gone and fixed point used, but AMD don't seem to think the
  accuracy and revalidation of the code is worth the effort"

* tag 'drm-for-v4.15-amd-dc' of git://people.freedesktop.org/~airlied/linux: (1110 commits)
  drm/amd/display: fix MST link training fail division by 0
  drm/amd/display: Fix formatting for null pointer dereference fix
  drm/amd/display: Remove dangling planes on dc commit state
  drm/amd/display: add flip_immediate to commit update for stream
  drm/amd/display: Miss register MST encoder cbs
  drm/amd/display: Fix warnings on S3 resume
  drm/amd/display: use num_timing_generator instead of pipe_count
  drm/amd/display: use configurable FBC option in dm
  drm/amd/display: fix AZ clock not enabled before program AZ endpoint
  amdgpu/dm: Don't use DRM_ERROR in amdgpu_dm_atomic_check
  amd/display: Fix potential null dereference in dce_calcs.c
  amdgpu/dm: Remove unused forward declaration
  drm/amdgpu: Remove unused dc_stream from amdgpu_crtc
  amdgpu/dc: Fix double unlock in amdgpu_dm_commit_planes
  amdgpu/dc: Fix missing null checks in amdgpu_dm.c
  amdgpu/dc: Fix potential null dereferences in amdgpu_dm.c
  amdgpu/dc: fix more indentation warnings
  amdgpu/dc: handle allocation failures in dc_commit_planes_to_stream.
  amdgpu/dc: fix indentation warning from smatch.
  amdgpu/dc: fix non-ansi function decls.
  ...

Documentation/gpu/todo.rst

@@ -409,5 +409,15 @@ those drivers as simple as possible, so lots of room for refactoring:
 
 Contact: Noralf Trønnes, Daniel Vetter
 
+AMD DC Display Driver
+---------------------
+
+AMD DC is the display driver for AMD devices starting with Vega. There has been
+a bunch of progress cleaning it up but there's still plenty of work to be done.
+
+See drivers/gpu/drm/amd/display/TODO for tasks.
+
+Contact: Harry Wentland, Alex Deucher
+
 Outside DRM
 ===========

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

@@ -4,13 +4,19 @@
 # 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
 
@@ -133,4 +139,13 @@ 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 +102,8 @@ 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_dc_log;
 extern int amdgpu_sched_jobs;
 extern int amdgpu_sched_hw_submission;
 extern int amdgpu_no_evict;
@@ -1535,6 +1538,7 @@ 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;
@@ -1590,6 +1594,9 @@ 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;
@@ -1653,6 +1660,9 @@ 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.
  */
@@ -1911,5 +1921,11 @@ 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_cgs.c

@@ -911,10 +911,6 @@ static int amdgpu_cgs_get_active_displays_info(struct cgs_device *cgs_device,
 					  struct cgs_display_info *info)
 {
 	CGS_FUNC_ADEV;
-	struct amdgpu_crtc *amdgpu_crtc;
-	struct drm_device *ddev = adev->ddev;
-	struct drm_crtc *crtc;
-	uint32_t line_time_us, vblank_lines;
 	struct cgs_mode_info *mode_info;
 
 	if (info == NULL)
@@ -928,30 +924,43 @@ static int amdgpu_cgs_get_active_displays_info(struct cgs_device *cgs_device,
 		mode_info->ref_clock = adev->clock.spll.reference_freq;
 	}
 
-	if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
-		list_for_each_entry(crtc,
-				&ddev->mode_config.crtc_list, head) {
-			amdgpu_crtc = to_amdgpu_crtc(crtc);
-			if (crtc->enabled) {
-				info->active_display_mask |= (1 << amdgpu_crtc->crtc_id);
-				info->display_count++;
-			}
-			if (mode_info != NULL &&
-				crtc->enabled && amdgpu_crtc->enabled &&
-				amdgpu_crtc->hw_mode.clock) {
-				line_time_us = (amdgpu_crtc->hw_mode.crtc_htotal * 1000) /
-							amdgpu_crtc->hw_mode.clock;
-				vblank_lines = amdgpu_crtc->hw_mode.crtc_vblank_end -
-							amdgpu_crtc->hw_mode.crtc_vdisplay +
-							(amdgpu_crtc->v_border * 2);
-				mode_info->vblank_time_us = vblank_lines * line_time_us;
-				mode_info->refresh_rate = drm_mode_vrefresh(&amdgpu_crtc->hw_mode);
-				mode_info->ref_clock = adev->clock.spll.reference_freq;
-				mode_info = NULL;
+	if (!amdgpu_device_has_dc_support(adev)) {
+		struct amdgpu_crtc *amdgpu_crtc;
+		struct drm_device *ddev = adev->ddev;
+		struct drm_crtc *crtc;
+		uint32_t line_time_us, vblank_lines;
+
+		if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
+			list_for_each_entry(crtc,
+					&ddev->mode_config.crtc_list, head) {
+				amdgpu_crtc = to_amdgpu_crtc(crtc);
+				if (crtc->enabled) {
+					info->active_display_mask |= (1 << amdgpu_crtc->crtc_id);
+					info->display_count++;
+				}
+				if (mode_info != NULL &&
+					crtc->enabled && amdgpu_crtc->enabled &&
+					amdgpu_crtc->hw_mode.clock) {
+					line_time_us = (amdgpu_crtc->hw_mode.crtc_htotal * 1000) /
+								amdgpu_crtc->hw_mode.clock;
+					vblank_lines = amdgpu_crtc->hw_mode.crtc_vblank_end -
+								amdgpu_crtc->hw_mode.crtc_vdisplay +
+								(amdgpu_crtc->v_border * 2);
+					mode_info->vblank_time_us = vblank_lines * line_time_us;
+					mode_info->refresh_rate = drm_mode_vrefresh(&amdgpu_crtc->hw_mode);
+					mode_info->ref_clock = adev->clock.spll.reference_freq;
+					mode_info = NULL;
+				}
 			}
 		}
+	} else {
+		info->display_count = adev->pm.pm_display_cfg.num_display;
+		if (mode_info != NULL) {
+			mode_info->vblank_time_us = adev->pm.pm_display_cfg.min_vblank_time;
+			mode_info->refresh_rate = adev->pm.pm_display_cfg.vrefresh;
+			mode_info->ref_clock = adev->clock.spll.reference_freq;
+		}
 	}
-
 	return 0;
 }
 

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>
@@ -2046,6 +2047,52 @@ 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_KAVERI:
+	case CHIP_CARRIZO:
+	case CHIP_STONEY:
+	case CHIP_POLARIS11:
+	case CHIP_POLARIS10:
+	case CHIP_POLARIS12:
+	case CHIP_TONGA:
+	case CHIP_FIJI:
+#if defined(CONFIG_DRM_AMD_DC_PRE_VEGA)
+		return amdgpu_dc != 0;
+#endif
+	case CHIP_KABINI:
+	case CHIP_MULLINS:
+		return amdgpu_dc > 0;
+	case CHIP_VEGA10:
+#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
+	case CHIP_RAVEN:
+#endif
+		return amdgpu_dc != 0;
+#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)
+{
+	if (amdgpu_sriov_vf(adev))
+		return false;
+
+	return amdgpu_device_asic_has_dc_support(adev->asic_type);
+}
+
 /**
  * amdgpu_device_init - initialize the driver
  *
@@ -2100,7 +2147,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg;
 	adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg;
 
-
 	DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
 		 amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
 		 pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
@@ -2242,7 +2288,8 @@ 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 */
@@ -2378,7 +2425,8 @@ 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;
@@ -2429,12 +2477,14 @@ 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);
 
@@ -2577,13 +2627,25 @@ 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);
@@ -2600,7 +2662,10 @@ 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
@@ -2900,6 +2965,7 @@ 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;
@@ -2913,6 +2979,9 @@ 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) {
@@ -3029,7 +3098,11 @@ 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_display.c

@@ -518,7 +518,7 @@ amdgpu_framebuffer_init(struct drm_device *dev,
 	return 0;
 }
 
-static struct drm_framebuffer *
+struct drm_framebuffer *
 amdgpu_user_framebuffer_create(struct drm_device *dev,
 			       struct drm_file *file_priv,
 			       const struct drm_mode_fb_cmd2 *mode_cmd)
@@ -556,7 +556,7 @@ amdgpu_user_framebuffer_create(struct drm_device *dev,
 	return &amdgpu_fb->base;
 }
 
-static void amdgpu_output_poll_changed(struct drm_device *dev)
+void amdgpu_output_poll_changed(struct drm_device *dev)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 	amdgpu_fb_output_poll_changed(adev);

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

+/*
+ * Copyright 2017 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_DISPLAY_H__
+#define __AMDGPU_DISPLAY_H__
+
+struct drm_framebuffer *
+amdgpu_user_framebuffer_create(struct drm_device *dev,
+						       struct drm_file *file_priv,
+							   const struct drm_mode_fb_cmd2 *mode_cmd);
+
+void amdgpu_output_poll_changed(struct drm_device *dev);
+
+#endif

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

@@ -433,7 +433,7 @@ 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

@@ -106,6 +106,8 @@ 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_dc_log = 0;
 int amdgpu_sched_jobs = 32;
 int amdgpu_sched_hw_submission = 2;
 int amdgpu_no_evict = 0;
@@ -211,6 +213,12 @@ 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(dc, "Display Core Log Level (0 = minimal (default), 1 = chatty");
+module_param_named(dc_log, amdgpu_dc_log, 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);
 
@@ -518,15 +526,15 @@ static const struct pci_device_id pciidlist[] = {
 	{0x1002, 0x6997, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_POLARIS12},
 	{0x1002, 0x699F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_POLARIS12},
 	/* Vega 10 */
-	{0x1002, 0x6860, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x6861, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x6862, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x6863, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x6864, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x6867, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x6868, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x686c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
-	{0x1002, 0x687f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10|AMD_EXP_HW_SUPPORT},
+	{0x1002, 0x6860, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x6861, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x6862, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x6863, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x6864, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x6867, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x6868, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x686c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
+	{0x1002, 0x687f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_VEGA10},
 	/* Raven */
 	{0x1002, 0x15dd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RAVEN|AMD_IS_APU|AMD_EXP_HW_SUPPORT},
 

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)
@@ -353,7 +348,8 @@ int amdgpu_fbdev_init(struct amdgpu_device *adev)
 	drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
 
 	/* disable all the possible outputs/crtcs before entering KMS mode */
-	drm_helper_disable_unused_functions(adev->ddev);
+	if (!amdgpu_device_has_dc_support(adev))
+		drm_helper_disable_unused_functions(adev->ddev);
 
 	drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
 	return 0;

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

@@ -1030,7 +1030,7 @@ 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;
@@ -53,9 +57,13 @@ struct amdgpu_hpd;
 #define to_amdgpu_connector(x) container_of(x, struct amdgpu_connector, base)
 #define to_amdgpu_encoder(x) container_of(x, struct amdgpu_encoder, base)
 #define to_amdgpu_framebuffer(x) container_of(x, struct amdgpu_framebuffer, base)
+#define to_amdgpu_plane(x)	container_of(x, struct amdgpu_plane, base)
+
+#define to_dm_plane_state(x)	container_of(x, struct dm_plane_state, base);
 
 #define AMDGPU_MAX_HPD_PINS 6
 #define AMDGPU_MAX_CRTCS 6
+#define AMDGPU_MAX_PLANES 6
 #define AMDGPU_MAX_AFMT_BLOCKS 9
 
 enum amdgpu_rmx_type {
@@ -292,6 +300,30 @@ 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;
+
+	/* caching for later use */
+	uint64_t address;
+};
+
+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 {
@@ -299,6 +331,7 @@ struct amdgpu_mode_info {
 	struct card_info *atom_card_info;
 	bool mode_config_initialized;
 	struct amdgpu_crtc *crtcs[AMDGPU_MAX_CRTCS];
+	struct amdgpu_plane *planes[AMDGPU_MAX_PLANES];
 	struct amdgpu_afmt *afmt[AMDGPU_MAX_AFMT_BLOCKS];
 	/* DVI-I properties */
 	struct drm_property *coherent_mode_property;
@@ -328,6 +361,7 @@ struct amdgpu_mode_info {
 	int			num_dig; /* number of dig blocks */
 	int			disp_priority;
 	const struct amdgpu_display_funcs *funcs;
+	const enum drm_plane_type *plane_type;
 };
 
 #define AMDGPU_MAX_BL_LEVEL 0xFF
@@ -400,6 +434,14 @@ struct amdgpu_crtc {
 	/* for virtual dce */
 	struct hrtimer vblank_timer;
 	enum amdgpu_interrupt_state vsync_timer_enabled;
+
+	int otg_inst;
+	struct drm_pending_vblank_event *event;
+};
+
+struct amdgpu_plane {
+	struct drm_plane base;
+	enum drm_plane_type plane_type;
 };
 
 struct amdgpu_encoder_atom_dig {
@@ -489,6 +531,19 @@ enum amdgpu_connector_dither {
 	AMDGPU_FMT_DITHER_ENABLE = 1,
 };
 
+struct amdgpu_dm_dp_aux {
+	struct drm_dp_aux aux;
+	struct ddc_service *ddc_service;
+};
+
+struct amdgpu_i2c_adapter {
+	struct i2c_adapter base;
+
+	struct ddc_service *ddc_service;
+};
+
+#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 +555,14 @@ 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. */
+	struct dc_sink *dc_sink;
+	struct dc_link *dc_link;
+	struct dc_sink *dc_em_sink;
+	const struct dc_stream *stream;
 	void *con_priv;
 	bool dac_load_detect;
 	bool detected_by_load; /* if the connection status was determined by load */
@@ -510,11 +573,39 @@ 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

@@ -1466,7 +1466,7 @@ 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);
@@ -1928,6 +1937,10 @@ 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_1_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v7_1_ip_block);
@@ -1943,6 +1956,10 @@ 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_3_ip_block);
 		amdgpu_ip_block_add(adev, &gfx_v7_2_ip_block);

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -532,6 +532,12 @@ int soc15_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);
+#else
+#	warning "Enable CONFIG_DRM_AMD_DC for display support on SOC15."
+#endif
 		amdgpu_ip_block_add(adev, &gfx_v9_0_ip_block);
 		amdgpu_ip_block_add(adev, &sdma_v4_0_ip_block);
 		amdgpu_ip_block_add(adev, &uvd_v7_0_ip_block);
@@ -545,6 +551,12 @@ int soc15_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);
+#else
+#	warning "Enable CONFIG_DRM_AMD_DC for display support on SOC15."
+#endif
 		amdgpu_ip_block_add(adev, &gfx_v9_0_ip_block);
 		amdgpu_ip_block_add(adev, &sdma_v4_0_ip_block);
 		amdgpu_ip_block_add(adev, &vcn_v1_0_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
@@ -1502,6 +1503,10 @@ 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);
@@ -1518,6 +1523,10 @@ 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);
@@ -1536,6 +1545,10 @@ 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);
@@ -1550,6 +1563,10 @@ 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);
@@ -1567,6 +1584,10 @@ 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 DRM_AMD_DC_FBC
+	bool "AMD FBC - Enable Frame Buffer Compression"
+	depends on DRM_AMD_DC
+	help
+	  Choose this option if you want to use frame buffer compression
+	  support.
+	  This is a power optimisation feature, check its availability
+	  on your hardware before enabling this option.
+
+
+config DRM_AMD_DC_DCN1_0
+	bool "DCN 1.0 Raven family"
+	depends on DRM_AMD_DC && X86
+	help
+	  Choose this option if you want to have
+	  RV family for display engine
+
+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/TODO

+===============================================================================
+TODOs
+===============================================================================
+
+1. Base this on drm-next - WIP
+
+
+2. Cleanup commit history
+
+
+3. WIP - Drop page flip helper and use DRM's version
+
+
+4. DONE - Flatten all DC objects
+    * dc_stream/core_stream/stream should just be dc_stream
+    * Same for other DC objects
+
+    "Is there any major reason to keep all those abstractions?
+
+    Could you collapse everything into struct dc_stream?
+
+    I haven't looked recently but I didn't get the impression there was a
+    lot of design around what was public/protected, more whatever needed
+    to be used by someone else was in public."
+    ~ Dave Airlie
+
+
+5. DONE - Rename DC objects to align more with DRM
+    * dc_surface -> dc_plane_state
+    * dc_stream -> dc_stream_state
+
+
+6. DONE - Per-plane and per-stream validation
+
+
+7. WIP - Per-plane and per-stream commit
+
+
+8. WIP - Split pipe_ctx into plane and stream resource structs
+
+
+9. Attach plane and stream reources to state object instead of validate_context
+
+
+10. Remove dc_edid_caps and drm_helpers_parse_edid_caps
+    * Use drm_display_info instead
+    * Remove DC's edid quirks and rely on DRM's quirks (add quirks if needed)
+
+    "Making sure you use the sink-specific helper libraries and kernel
+    subsystems, since there's really no good reason to have 2nd
+    implementation of those in the kernel. Looks likes that's done for mst
+    and edid parsing. There's still a bit a midlayer feeling to the edid
+    parsing side (e.g. dc_edid_caps and dm_helpers_parse_edid_caps, I
+    think it'd be much better if you convert that over to reading stuff
+    from drm_display_info and if needed, push stuff into the core). Also,
+    I can't come up with a good reason why DC needs all this (except to
+    reimplement half of our edid quirk table, which really isn't a good
+    idea). Might be good if you put this onto the list of things to fix
+    long-term, but imo not a blocker. Definitely make sure new stuff
+    doesn't slip in (i.e. if you start adding edid quirks to DC instead of
+    the drm core, refactoring to use the core edid stuff was pointless)."
+    ~ Daniel Vetter
+
+
+11. Remove dc/i2caux. This folder can be somewhat misleading. It's basically an
+overy complicated HW programming function for sendind and receiving i2c/aux
+commands. We can greatly simplify that and move it into dc/dceXYZ like other
+HW blocks.
+
+12. drm_modeset_lock in MST should no longer be needed in recent kernels
+    * Adopt appropriate locking scheme
+
+13. get_modes and best_encoder callbacks look a bit funny. Can probably rip out
+a few indirections, and consider removing entirely and using the
+drm_atomic_helper_best_encoder default behaviour.
+
+14. core/dc_debug.c, consider switching to the atomic state debug helpers and
+moving all your driver state printing into the various atomic_print_state
+callbacks. There's also plans to expose this stuff in a standard way across all
+drivers, to make debugging userspace compositors easier across different hw.
+
+15. Move DP/HDMI dual mode adaptors to drm_dp_dual_mode_helper.c. See
+dal_ddc_service_i2c_query_dp_dual_mode_adaptor.
+
+16. Move to core SCDC helpers (I think those are new since initial DC review).
+
+17. There's still a pretty massive layer cake around dp aux and DPCD handling,
+with like 3 levels of abstraction and using your own structures instead of the
+stuff in drm_dp_helper.h. drm_dp_helper.h isn't really great and already has 2
+incompatible styles, just means more reasons not to add a third (or well third
+one gets to do the cleanup refactor).
+
+18. There's a pile of sink handling code, both for DP and HDMI where I didn't
+immediately recognize the standard. I think long term it'd be best for the drm
+subsystem if we try to move as much of that into helpers/core as possible, and
+share it with drivers. But that's a very long term goal, and by far not just an
+issue with DC - other drivers, especially around DP sink handling, are equally
+guilty.
+
+19. The DC logger is still a rather sore thing, but I know that the DRM_DEBUG
+stuff just isn't up to the challenges either. We need to figure out something
+that integrates better with DRM and linux debug printing, while not being
+useless with filtering output. dynamic debug printing might be an option.
+
+20. Use kernel i2c device to program HDMI retimer. Some boards have an HDMI
+retimer that we need to program to pass PHY compliance. Currently that's
+bypassing the i2c device and goes directly to HW. This should be changed.

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.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 <drm/drmP.h>
+#include <drm/drm_atomic.h>
+#include "dc.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;
+};
+
+#if defined(CONFIG_DRM_AMD_DC_FBC)
+struct dm_comressor_info {
+	void *cpu_addr;
+	struct amdgpu_bo *bo_ptr;
+	uint64_t gpu_addr;
+};
+#endif
+
+
+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
+	vblank_params[DC_IRQ_SOURCE_VBLANK6 - DC_IRQ_SOURCE_VBLANK1 + 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;
+
+	/**
+	 * Caches device atomic state for suspend/resume
+	 */
+	struct drm_atomic_state *cached_state;
+#if defined(CONFIG_DRM_AMD_DC_FBC)
+	struct dm_comressor_info compressor;
+#endif
+};
+
+struct amdgpu_dm_connector {
+
+	struct drm_connector base;
+	uint32_t connector_id;
+
+	/* we need to mind the EDID between detect
+	   and get modes due to analog/digital/tvencoder */
+	struct edid *edid;
+
+	/* shared with amdgpu */
+	struct amdgpu_hpd hpd;
+
+	/* 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. */
+	struct dc_sink *dc_sink;
+	struct dc_link *dc_link;
+	struct dc_sink *dc_em_sink;
+
+	/* DM only */
+	struct drm_dp_mst_topology_mgr mst_mgr;
+	struct amdgpu_dm_dp_aux dm_dp_aux;
+	struct drm_dp_mst_port *port;
+	struct amdgpu_dm_connector *mst_port;
+	struct amdgpu_encoder *mst_encoder;
+
+	/* 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;
+
+	bool fake_enable;
+};
+
+#define to_amdgpu_dm_connector(x) container_of(x, struct amdgpu_dm_connector, base)
+
+extern const struct amdgpu_ip_block_version dm_ip_block;
+
+struct amdgpu_framebuffer;
+struct amdgpu_display_manager;
+struct dc_validation_set;
+struct dc_plane_state;
+
+struct dm_plane_state {
+	struct drm_plane_state base;
+	struct dc_plane_state *dc_state;
+};
+
+struct dm_crtc_state {
+	struct drm_crtc_state base;
+	struct dc_stream_state *stream;
+};
+
+#define to_dm_crtc_state(x)    container_of(x, struct dm_crtc_state, base)
+
+struct dm_atomic_state {
+	struct drm_atomic_state base;
+
+	struct dc_state *context;
+};
+
+#define to_dm_atomic_state(x) container_of(x, struct dm_atomic_state, base)
+
+
+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_connector_atomic_get_property(struct drm_connector *connector,
+					    const 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_dm_connector *aconnector,
+				     int connector_type,
+				     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_H__ */

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_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_late(struct amdgpu_device *adev);
+
+#endif /* __AMDGPU_DM_IRQ_H__ */

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_dm_connector;
+
+void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
+				       struct amdgpu_dm_connector *aconnector);
+
+#endif

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

+#
+# Makefile for Display Core (dc) component.
+#
+
+DC_LIBS = basics bios calcs dce gpio i2caux irq virtual
+
+ifdef CONFIG_DRM_AMD_DC_DCN1_0
+DC_LIBS += dcn10 dml
+endif
+
+DC_LIBS += dce120
+
+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_sink.o \
+dc_surface.o dc_link_hwss.o dc_link_dp.o dc_link_ddc.o dc_debug.o dc_stream.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 vector.o
+
+AMD_DAL_BASICS = $(addprefix $(AMDDALPATH)/dc/basics/,$(BASICS))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_BASICS)

drivers/gpu/drm/amd/display/dc/basics/conversion.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 "dm_services.h"
+
+#define DIVIDER 10000
+
+/* S2D13 value in [-3.00...0.9999] */
+#define S2D13_MIN (-3 * DIVIDER)
+#define S2D13_MAX (3 * DIVIDER)
+
+uint16_t fixed_point_to_int_frac(
+	struct fixed31_32 arg,
+	uint8_t integer_bits,
+	uint8_t fractional_bits)
+{
+	int32_t numerator;
+	int32_t divisor = 1 << fractional_bits;
+
+	uint16_t result;
+
+	uint16_t d = (uint16_t)dal_fixed31_32_floor(
+		dal_fixed31_32_abs(
+			arg));
+
+	if (d <= (uint16_t)(1 << integer_bits) - (1 / (uint16_t)divisor))
+		numerator = (uint16_t)dal_fixed31_32_floor(
+			dal_fixed31_32_mul_int(
+				arg,
+				divisor));
+	else {
+		numerator = dal_fixed31_32_floor(
+			dal_fixed31_32_sub(
+				dal_fixed31_32_from_int(
+					1LL << integer_bits),
+				dal_fixed31_32_recip(
+					dal_fixed31_32_from_int(
+						divisor))));
+	}
+
+	if (numerator >= 0)
+		result = (uint16_t)numerator;
+	else
+		result = (uint16_t)(
+		(1 << (integer_bits + fractional_bits + 1)) + numerator);
+
+	if ((result != 0) && dal_fixed31_32_lt(
+		arg, dal_fixed31_32_zero))
+		result |= 1 << (integer_bits + fractional_bits);
+
+	return result;
+}
+/**
+* convert_float_matrix
+* This converts a double into HW register spec defined format S2D13.
+* @param :
+* @return None
+*/
+void convert_float_matrix(
+	uint16_t *matrix,
+	struct fixed31_32 *flt,
+	uint32_t buffer_size)
+{
+	const struct fixed31_32 min_2_13 =
+		dal_fixed31_32_from_fraction(S2D13_MIN, DIVIDER);
+	const struct fixed31_32 max_2_13 =
+		dal_fixed31_32_from_fraction(S2D13_MAX, DIVIDER);
+	uint32_t i;
+
+	for (i = 0; i < buffer_size; ++i) {
+		uint32_t reg_value =
+				fixed_point_to_int_frac(
+					dal_fixed31_32_clamp(
+						flt[i],
+						min_2_13,
+						max_2_13),
+						2,
+						13);
+
+		matrix[i] = (uint16_t)reg_value;
+	}
+}

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);
+
+static inline unsigned int log_2(unsigned int num)
+{
+	return ilog2(num);
+}
+
+#endif

drivers/gpu/drm/amd/display/dc/basics/fixpt32_32.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 "dm_services.h"
+#include "include/fixed32_32.h"
+
+static uint64_t u64_div(uint64_t n, uint64_t d)
+{
+	uint32_t i = 0;
+	uint64_t r;
+	uint64_t q = div64_u64_rem(n, d, &r);
+
+	for (i = 0; i < 32; ++i) {
+		uint64_t sbit = q & (1ULL<<63);
+
+		r <<= 1;
+		r |= sbit ? 1 : 0;
+		q <<= 1;
+		if (r >= d) {
+			r -= d;
+			q |= 1;
+		}
+	}
+
+	if (2*r >= d)
+		q += 1;
+	return q;
+}
+
+struct fixed32_32 dal_fixed32_32_from_fraction(uint32_t n, uint32_t d)
+{
+	struct fixed32_32 fx;
+
+	fx.value = u64_div((uint64_t)n << 32, (uint64_t)d << 32);
+	return fx;
+}
+
+struct fixed32_32 dal_fixed32_32_add(
+	struct fixed32_32 lhs,
+	struct fixed32_32 rhs)
+{
+	struct fixed32_32 fx = {lhs.value + rhs.value};
+
+	ASSERT(fx.value >= rhs.value);
+	return fx;
+}
+
+struct fixed32_32 dal_fixed32_32_add_int(struct fixed32_32 lhs, uint32_t rhs)
+{
+	struct fixed32_32 fx = {lhs.value + ((uint64_t)rhs << 32)};
+
+	ASSERT(fx.value >= (uint64_t)rhs << 32);
+	return fx;
+
+}
+struct fixed32_32 dal_fixed32_32_sub(
+	struct fixed32_32 lhs,
+	struct fixed32_32 rhs)
+{
+	struct fixed32_32 fx;
+
+	ASSERT(lhs.value >= rhs.value);
+	fx.value = lhs.value - rhs.value;
+	return fx;
+}
+
+struct fixed32_32 dal_fixed32_32_sub_int(struct fixed32_32 lhs, uint32_t rhs)
+{
+	struct fixed32_32 fx;
+
+	ASSERT(lhs.value >= ((uint64_t)rhs<<32));
+	fx.value = lhs.value - ((uint64_t)rhs<<32);
+	return fx;
+}
+
+struct fixed32_32 dal_fixed32_32_mul(
+	struct fixed32_32 lhs,
+	struct fixed32_32 rhs)
+{
+	struct fixed32_32 fx;
+	uint64_t lhs_int = lhs.value>>32;
+	uint64_t lhs_frac = (uint32_t)lhs.value;
+	uint64_t rhs_int = rhs.value>>32;
+	uint64_t rhs_frac = (uint32_t)rhs.value;
+	uint64_t ahbh = lhs_int * rhs_int;
+	uint64_t ahbl = lhs_int * rhs_frac;
+	uint64_t albh = lhs_frac * rhs_int;
+	uint64_t albl = lhs_frac * rhs_frac;
+
+	ASSERT((ahbh>>32) == 0);
+
+	fx.value = (ahbh<<32) + ahbl + albh + (albl>>32);
+	return fx;
+
+}
+
+struct fixed32_32 dal_fixed32_32_mul_int(struct fixed32_32 lhs, uint32_t rhs)
+{
+	struct fixed32_32 fx;
+	uint64_t lhsi = (lhs.value>>32) * (uint64_t)rhs;
+	uint64_t lhsf;
+
+	ASSERT((lhsi>>32) == 0);
+	lhsf = ((uint32_t)lhs.value) * (uint64_t)rhs;
+	ASSERT((lhsi<<32) + lhsf >= lhsf);
+	fx.value = (lhsi<<32) + lhsf;
+	return fx;
+}
+
+struct fixed32_32 dal_fixed32_32_div(
+	struct fixed32_32 lhs,
+	struct fixed32_32 rhs)
+{
+	struct fixed32_32 fx;
+
+	fx.value = u64_div(lhs.value, rhs.value);
+	return fx;
+}
+
+struct fixed32_32 dal_fixed32_32_div_int(struct fixed32_32 lhs, uint32_t rhs)
+{
+	struct fixed32_32 fx;
+
+	fx.value = u64_div(lhs.value, (uint64_t)rhs << 32);
+	return fx;
+}
+
+uint32_t dal_fixed32_32_ceil(struct fixed32_32 v)
+{
+	ASSERT((uint32_t)v.value ? (v.value >> 32) + 1 >= 1 : true);
+	return (v.value>>32) + ((uint32_t)v.value ? 1 : 0);
+}
+
+uint32_t dal_fixed32_32_round(struct fixed32_32 v)
+{
+	ASSERT(v.value + (1ULL<<31) >= (1ULL<<31));
+	return (v.value + (1ULL<<31))>>32;
+}
+

drivers/gpu/drm/amd/display/dc/basics/grph_object_id.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 "dm_services.h"
+#include "include/grph_object_id.h"
+
+static bool dal_graphics_object_id_is_valid(struct graphics_object_id id)
+{
+	bool rc = true;
+
+	switch (id.type) {
+	case OBJECT_TYPE_UNKNOWN:
+		rc = false;
+		break;
+	case OBJECT_TYPE_GPU:
+	case OBJECT_TYPE_ENGINE:
+		/* do NOT check for id.id == 0 */
+		if (id.enum_id == ENUM_ID_UNKNOWN)
+			rc = false;
+		break;
+	default:
+		if (id.id == 0 || id.enum_id == ENUM_ID_UNKNOWN)
+			rc = false;
+		break;
+	}
+
+	return rc;
+}
+
+bool dal_graphics_object_id_is_equal(
+	struct graphics_object_id id1,
+	struct graphics_object_id id2)
+{
+	if (false == dal_graphics_object_id_is_valid(id1)) {
+		dm_output_to_console(
+		"%s: Warning: comparing invalid object 'id1'!\n", __func__);
+		return false;
+	}
+
+	if (false == dal_graphics_object_id_is_valid(id2)) {
+		dm_output_to_console(
+		"%s: Warning: comparing invalid object 'id2'!\n", __func__);
+		return false;
+	}
+
+	if (id1.id == id2.id && id1.enum_id == id2.enum_id
+		&& id1.type == id2.type)
+		return true;
+
+	return false;
+}
+
+

drivers/gpu/drm/amd/display/dc/basics/log_helpers.c

+/*
+ * Copyright 2012-16 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 "core_types.h"
+#include "logger.h"
+#include "include/logger_interface.h"
+#include "dm_helpers.h"
+
+#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
+
+struct dc_signal_type_info {
+	enum signal_type type;
+	char name[MAX_NAME_LEN];
+};
+
+static const struct dc_signal_type_info signal_type_info_tbl[] = {
+		{SIGNAL_TYPE_NONE,             "NC"},
+		{SIGNAL_TYPE_DVI_SINGLE_LINK,  "DVI"},
+		{SIGNAL_TYPE_DVI_DUAL_LINK,    "DDVI"},
+		{SIGNAL_TYPE_HDMI_TYPE_A,      "HDMIA"},
+		{SIGNAL_TYPE_LVDS,             "LVDS"},
+		{SIGNAL_TYPE_RGB,              "VGA"},
+		{SIGNAL_TYPE_DISPLAY_PORT,     "DP"},
+		{SIGNAL_TYPE_DISPLAY_PORT_MST, "MST"},
+		{SIGNAL_TYPE_EDP,              "eDP"},
+		{SIGNAL_TYPE_VIRTUAL,          "Virtual"}
+};
+
+void dc_conn_log(struct dc_context *ctx,
+		const struct dc_link *link,
+		uint8_t *hex_data,
+		int hex_data_count,
+		enum dc_log_type event,
+		const char *msg,
+		...)
+{
+	int i;
+	va_list args;
+	struct log_entry entry = { 0 };
+	enum signal_type signal;
+
+	if (link->local_sink)
+		signal = link->local_sink->sink_signal;
+	else
+		signal = link->connector_signal;
+
+	if (link->type == dc_connection_mst_branch)
+		signal = SIGNAL_TYPE_DISPLAY_PORT_MST;
+
+	dm_logger_open(ctx->logger, &entry, event);
+
+	for (i = 0; i < NUM_ELEMENTS(signal_type_info_tbl); i++)
+		if (signal == signal_type_info_tbl[i].type)
+			break;
+
+	dm_logger_append(&entry, "[%s][ConnIdx:%d] ",
+			signal_type_info_tbl[i].name,
+			link->link_index);
+
+	va_start(args, msg);
+	entry.buf_offset += dm_log_to_buffer(
+		&entry.buf[entry.buf_offset],
+		LOG_MAX_LINE_SIZE - entry.buf_offset,
+		msg, args);
+
+	if (entry.buf[strlen(entry.buf) - 1] == '\n') {
+		entry.buf[strlen(entry.buf) - 1] = '\0';
+		entry.buf_offset--;
+	}
+
+	if (hex_data)
+		for (i = 0; i < hex_data_count; i++)
+			dm_logger_append(&entry, "%2.2X ", hex_data[i]);
+
+	dm_logger_append(&entry, "^\n");
+	dm_helpers_dc_conn_log(ctx, &entry, event);
+	dm_logger_close(&entry);
+
+	va_end(args);
+}

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

+#
+# Makefile for common 'dce' logic
+# HW object file under this folder follow similar pattern for HW programming
+#   - register offset and/or shift + mask stored in the dec_hw struct
+#   - register programming through common macros that look up register 
+#     offset/shift/mask stored in dce_hw struct
+
+DCE = dce_audio.o dce_stream_encoder.o dce_link_encoder.o dce_hwseq.o \
+dce_mem_input.o dce_clock_source.o dce_scl_filters.o dce_transform.o \
+dce_clocks.o dce_opp.o dce_dmcu.o dce_abm.o dce_ipp.o
+
+
+AMD_DAL_DCE = $(addprefix $(AMDDALPATH)/dc/dce/,$(DCE))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_DCE)