drm/amdgpu: add core driver (v4)

This adds the non-asic specific core driver code.

v2: remove extra kconfig option
v3: implement minor fixes from Fengguang Wu
v4: fix cast in amdgpu_ucode.c

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/Kconfig

@@ -120,6 +120,27 @@ config DRM_RADEON
 
 source "drivers/gpu/drm/radeon/Kconfig"
 
+config DRM_AMDGPU
+	tristate "AMD GPU"
+	depends on DRM && PCI
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	select FW_LOADER
+        select DRM_KMS_HELPER
+	select DRM_KMS_FB_HELPER
+        select DRM_TTM
+	select POWER_SUPPLY
+	select HWMON
+	select BACKLIGHT_CLASS_DEVICE
+	select INTERVAL_TREE
+	help
+	  Choose this option if you have a recent AMD Radeon graphics card.
+
+	  If M is selected, the module will be called amdgpu.
+
+source "drivers/gpu/drm/amd/amdgpu/Kconfig"
+
 source "drivers/gpu/drm/nouveau/Kconfig"
 
 config DRM_I810

drivers/gpu/drm/Makefile

@@ -37,6 +37,7 @@ obj-$(CONFIG_DRM_TDFX)	+= tdfx/
 obj-$(CONFIG_DRM_R128)	+= r128/
 obj-$(CONFIG_HSA_AMD) += amd/amdkfd/
 obj-$(CONFIG_DRM_RADEON)+= radeon/
+obj-$(CONFIG_DRM_AMDGPU)+= amd/amdgpu/
 obj-$(CONFIG_DRM_MGA)	+= mga/
 obj-$(CONFIG_DRM_I810)	+= i810/
 obj-$(CONFIG_DRM_I915)  += i915/

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -0,0 +1,17 @@
+config DRM_AMDGPU_CIK
+	bool "Enable amdgpu support for CIK parts"
+	depends on DRM_AMDGPU
+	help
+	  Choose this option if you want to enable experimental support
+	  for CIK asics.
+
+	  CIK is already supported in radeon.  CIK support in amdgpu
+	  is for experimentation and testing.
+
+config DRM_AMDGPU_USERPTR
+	bool "Always enable userptr write support"
+	depends on DRM_AMDGPU
+	select MMU_NOTIFIER
+	help
+	  This option selects CONFIG_MMU_NOTIFIER if it isn't already
+	  selected to enabled full userptr support.

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -0,0 +1,49 @@
+#
+# Makefile for the drm device driver.  This driver provides support for the
+# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
+
+ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/amd/include/asic_reg
+
+amdgpu-y := amdgpu_drv.o
+
+# add KMS driver
+amdgpu-y += amdgpu_device.o amdgpu_kms.o \
+	amdgpu_atombios.o atombios_crtc.o amdgpu_connectors.o \
+	atom.o amdgpu_fence.o amdgpu_ttm.o amdgpu_object.o amdgpu_gart.o \
+	amdgpu_encoders.o amdgpu_display.o amdgpu_i2c.o \
+	amdgpu_fb.o amdgpu_gem.o amdgpu_ring.o \
+	amdgpu_cs.o amdgpu_bios.o amdgpu_benchmark.o amdgpu_test.o \
+	amdgpu_pm.o atombios_dp.o amdgpu_afmt.o amdgpu_trace_points.o \
+	atombios_encoders.o amdgpu_semaphore.o amdgpu_sa.o atombios_i2c.o \
+	amdgpu_prime.o amdgpu_vm.o amdgpu_ib.o amdgpu_pll.o \
+	amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o
+
+# add IH block
+amdgpu-y += \
+	amdgpu_irq.o \
+	amdgpu_ih.o
+
+# add SMC block
+amdgpu-y += \
+	amdgpu_dpm.o
+
+# add GFX block
+amdgpu-y += \
+	amdgpu_gfx.o
+
+# add UVD block
+amdgpu-y += \
+	amdgpu_uvd.o
+
+# add VCE block
+amdgpu-y += \
+	amdgpu_vce.o
+
+amdgpu-$(CONFIG_COMPAT) += amdgpu_ioc32.o
+amdgpu-$(CONFIG_VGA_SWITCHEROO) += amdgpu_atpx_handler.o
+amdgpu-$(CONFIG_ACPI) += amdgpu_acpi.o
+amdgpu-$(CONFIG_MMU_NOTIFIER) += amdgpu_mn.o
+
+obj-$(CONFIG_DRM_AMDGPU)+= amdgpu.o
+
+CFLAGS_amdgpu_trace_points.o := -I$(src)