Merge tag 'drm-misc-next-2018-04-26' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v4.18:

UAPI Changes:
- Add support for a generic plane alpha property to sun4i, rcar-du and atmel-hclcdc. (Maxime)

Core Changes:
- Stop looking at legacy plane->fb and crtc members in atomic drivers. (Ville)
- mode_valid return type fixes. (Luc)
- Handle zpos normalization in the core. (Peter)

Driver Changes:
- Implement CTM, plane alpha and generic async cursor support in vc4. (Stefan)
- Various fixes for HPD and aux chan in drm_bridge/analogix_dp. (Lin, Zain, Douglas)
- Add support for MIPI DSI to sun4i. (Maxime)
Signed-off-by: NDave Airlie <airlied@redhat.com>

# gpg: Signature made Thu 26 Apr 2018 08:21:01 PM AEST
# gpg:                using RSA key FE558C72A67013C3
# gpg: Can't check signature: public key not found
Link: https://patchwork.freedesktop.org/patch/msgid/b33da7eb-efc9-ae6f-6f69-b7acd6df6797@mblankhorst.nl

Documentation/devicetree/bindings/display/bridge/adi,adv7511.txt

@@ -14,7 +14,13 @@ Required properties:
 		"adi,adv7513"
 		"adi,adv7533"
 
-- reg: I2C slave address
+- reg: I2C slave addresses
+  The ADV7511 internal registers are split into four pages exposed through
+  different I2C addresses, creating four register maps. Each map has it own
+  I2C address and acts as a standard slave device on the I2C bus. The main
+  address is mandatory, others are optional and revert to defaults if not
+  specified.
+
 
 The ADV7511 supports a large number of input data formats that differ by their
 color depth, color format, clock mode, bit justification and random
@@ -70,6 +76,9 @@ Optional properties:
   rather than generate its own timings for HDMI output.
 - clocks: from common clock binding: reference to the CEC clock.
 - clock-names: from common clock binding: must be "cec".
+- reg-names : Names of maps with programmable addresses.
+	It can contain any map needing a non-default address.
+	Possible maps names are : "main", "edid", "cec", "packet"
 
 Required nodes:
 
@@ -88,7 +97,12 @@ Example
 
 	adv7511w: hdmi@39 {
 		compatible = "adi,adv7511w";
-		reg = <39>;
+		/*
+		 * The EDID page will be accessible on address 0x66 on the I2C
+		 * bus. All other maps continue to use their default addresses.
+		 */
+		reg = <0x39>, <0x66>;
+		reg-names = "main", "edid";
 		interrupt-parent = <&gpio3>;
 		interrupts = <29 IRQ_TYPE_EDGE_FALLING>;
 		clocks = <&cec_clock>;

Documentation/devicetree/bindings/display/bridge/cdns,dsi.txt

+Cadence DSI bridge
+==================
+
+The Cadence DSI bridge is a DPI to DSI bridge supporting up to 4 DSI lanes.
+
+Required properties:
+- compatible: should be set to "cdns,dsi".
+- reg: physical base address and length of the controller's registers.
+- interrupts: interrupt line connected to the DSI bridge.
+- clocks: DSI bridge clocks.
+- clock-names: must contain "dsi_p_clk" and "dsi_sys_clk".
+- phys: phandle link to the MIPI D-PHY controller.
+- phy-names: must contain "dphy".
+- #address-cells: must be set to 1.
+- #size-cells: must be set to 0.
+
+Optional properties:
+- resets: DSI reset lines.
+- reset-names: can contain "dsi_p_rst".
+
+Required subnodes:
+- ports: Ports as described in Documentation/devicetree/bindings/graph.txt.
+  2 ports are available:
+  * port 0: this port is only needed if some of your DSI devices are
+	    controlled through  an external bus like I2C or SPI. Can have at
+	    most 4 endpoints. The endpoint number is directly encoding the
+	    DSI virtual channel used by this device.
+  * port 1: represents the DPI input.
+  Other ports will be added later to support the new kind of inputs.
+
+- one subnode per DSI device connected on the DSI bus. Each DSI device should
+  contain a reg property encoding its virtual channel.
+
+Cadence DPHY
+============
+
+Cadence DPHY block.
+
+Required properties:
+- compatible: should be set to "cdns,dphy".
+- reg: physical base address and length of the DPHY registers.
+- clocks: DPHY reference clocks.
+- clock-names: must contain "psm" and "pll_ref".
+- #phy-cells: must be set to 0.
+
+
+Example:
+	dphy0: dphy@fd0e0000{
+		compatible = "cdns,dphy";
+		reg = <0x0 0xfd0e0000 0x0 0x1000>;
+		clocks = <&psm_clk>, <&pll_ref_clk>;
+		clock-names = "psm", "pll_ref";
+		#phy-cells = <0>;
+	};
+
+	dsi0: dsi@fd0c0000 {
+		compatible = "cdns,dsi";
+		reg = <0x0 0xfd0c0000 0x0 0x1000>;
+		clocks = <&pclk>, <&sysclk>;
+		clock-names = "dsi_p_clk", "dsi_sys_clk";
+		interrupts = <1>;
+		phys = <&dphy0>;
+		phy-names = "dphy";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@1 {
+				reg = <1>;
+				dsi0_dpi_input: endpoint {
+					remote-endpoint = <&xxx_dpi_output>;
+				};
+			};
+		};
+
+		panel: dsi-dev@0 {
+			compatible = "<vendor,panel>";
+			reg = <0>;
+		};
+	};
+
+or
+
+	dsi0: dsi@fd0c0000 {
+		compatible = "cdns,dsi";
+		reg = <0x0 0xfd0c0000 0x0 0x1000>;
+		clocks = <&pclk>, <&sysclk>;
+		clock-names = "dsi_p_clk", "dsi_sys_clk";
+		interrupts = <1>;
+		phys = <&dphy1>;
+		phy-names = "dphy";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				dsi0_output: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&dsi_panel_input>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				dsi0_dpi_input: endpoint {
+					remote-endpoint = <&xxx_dpi_output>;
+				};
+			};
+		};
+	};
+
+	i2c@xxx {
+		panel: panel@59 {
+			compatible = "<vendor,panel>";
+			reg = <0x59>;
+
+			port {
+				dsi_panel_input: endpoint {
+					remote-endpoint = <&dsi0_output>;
+				};
+			};
+		};
+	};

Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt

+Thine Electronics THC63LVD1024 LVDS decoder
+-------------------------------------------
+
+The THC63LVD1024 is a dual link LVDS receiver designed to convert LVDS streams
+to parallel data outputs. The chip supports single/dual input/output modes,
+handling up to two LVDS input streams and up to two digital CMOS/TTL outputs.
+
+Single or dual operation mode, output data mapping and DDR output modes are
+configured through input signals and the chip does not expose any control bus.
+
+Required properties:
+- compatible: Shall be "thine,thc63lvd1024"
+- vcc-supply: Power supply for TTL output, TTL CLOCKOUT signal, LVDS input,
+  PPL and digital circuitry
+
+Optional properties:
+- powerdown-gpios: Power down GPIO signal, pin name "/PDWN". Active low
+- oe-gpios: Output enable GPIO signal, pin name "OE". Active high
+
+The THC63LVD1024 video port connections are modeled according
+to OF graph bindings specified by Documentation/devicetree/bindings/graph.txt
+
+Required video port nodes:
+- port@0: First LVDS input port
+- port@2: First digital CMOS/TTL parallel output
+
+Optional video port nodes:
+- port@1: Second LVDS input port
+- port@3: Second digital CMOS/TTL parallel output
+
+Example:
+--------
+
+	thc63lvd1024: lvds-decoder {
+		compatible = "thine,thc63lvd1024";
+
+		vcc-supply = <&reg_lvds_vcc>;
+		powerdown-gpios = <&gpio4 15 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lvds_dec_in_0: endpoint {
+					remote-endpoint = <&lvds_out>;
+				};
+			};
+
+			port@2{
+				reg = <2>;
+
+				lvds_dec_out_2: endpoint {
+					remote-endpoint = <&adv7511_in>;
+				};
+			};
+		};
+	};

Documentation/devicetree/bindings/display/sunxi/sun6i-dsi.txt

+Allwinner A31 DSI Encoder
+=========================
+
+The DSI pipeline consists of two separate blocks: the DSI controller
+itself, and its associated D-PHY.
+
+DSI Encoder
+-----------
+
+The DSI Encoder generates the DSI signal from the TCON's.
+
+Required properties:
+  - compatible: value must be one of:
+    * allwinner,sun6i-a31-mipi-dsi
+  - reg: base address and size of memory-mapped region
+  - interrupts: interrupt associated to this IP
+  - clocks: phandles to the clocks feeding the DSI encoder
+    * bus: the DSI interface clock
+    * mod: the DSI module clock
+  - clock-names: the clock names mentioned above
+  - phys: phandle to the D-PHY
+  - phy-names: must be "dphy"
+  - resets: phandle to the reset controller driving the encoder
+
+  - ports: A ports node with endpoint definitions as defined in
+    Documentation/devicetree/bindings/media/video-interfaces.txt. The
+    first port should be the input endpoint, usually coming from the
+    associated TCON.
+
+Any MIPI-DSI device attached to this should be described according to
+the bindings defined in ../mipi-dsi-bus.txt
+
+D-PHY
+-----
+
+Required properties:
+  - compatible: value must be one of:
+    * allwinner,sun6i-a31-mipi-dphy
+  - reg: base address and size of memory-mapped region
+  - clocks: phandles to the clocks feeding the DSI encoder
+    * bus: the DSI interface clock
+    * mod: the DSI module clock
+  - clock-names: the clock names mentioned above
+  - resets: phandle to the reset controller driving the encoder
+
+Example:
+
+dsi0: dsi@1ca0000 {
+	compatible = "allwinner,sun6i-a31-mipi-dsi";
+	reg = <0x01ca0000 0x1000>;
+	interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&ccu CLK_BUS_MIPI_DSI>,
+		 <&ccu CLK_DSI_SCLK>;
+	clock-names = "bus", "mod";
+	resets = <&ccu RST_BUS_MIPI_DSI>;
+	phys = <&dphy0>;
+	phy-names = "dphy";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel@0 {
+		compatible = "bananapi,lhr050h41", "ilitek,ili9881c";
+		reg = <0>;
+		power-gpios = <&pio 1 7 GPIO_ACTIVE_HIGH>; /* PB07 */
+		reset-gpios = <&r_pio 0 5 GPIO_ACTIVE_LOW>; /* PL05 */
+		backlight = <&pwm_bl>;
+	};
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+
+			dsi0_in_tcon0: endpoint {
+				remote-endpoint = <&tcon0_out_dsi0>;
+			};
+		};
+	};
+};
+
+dphy0: d-phy@1ca1000 {
+	compatible = "allwinner,sun6i-a31-mipi-dphy";
+	reg = <0x01ca1000 0x1000>;
+	clocks = <&ccu CLK_BUS_MIPI_DSI>,
+		 <&ccu CLK_DSI_DPHY>;
+	clock-names = "bus", "mod";
+	resets = <&ccu RST_BUS_MIPI_DSI>;
+	#phy-cells = <0>;
+};

Documentation/gpu/drivers.rst

@@ -12,6 +12,7 @@ GPU Driver Documentation
    tve200
    vc4
    bridge/dw-hdmi
+   xen-front
 
 .. only::  subproject and html
 

Documentation/gpu/kms-properties.csv

@@ -98,5 +98,4 @@ radeon,DVI-I,“coherent”,RANGE,"Min=0, Max=1",Connector,TBD
 ,,"""underscan vborder""",RANGE,"Min=0, Max=128",Connector,TBD
 ,Audio,“audio”,ENUM,"{ ""off"", ""on"", ""auto"" }",Connector,TBD
 ,FMT Dithering,“dither”,ENUM,"{ ""off"", ""on"" }",Connector,TBD
-rcar-du,Generic,"""alpha""",RANGE,"Min=0, Max=255",Plane,TBD
 ,,"""colorkey""",RANGE,"Min=0, Max=0x01ffffff",Plane,TBD

Documentation/gpu/todo.rst

@@ -212,6 +212,24 @@ probably use drm_fb_helper_fbdev_teardown().
 
 Contact: Maintainer of the driver you plan to convert
 
+Clean up mmap forwarding
+------------------------
+
+A lot of drivers forward gem mmap calls to dma-buf mmap for imported buffers.
+And also a lot of them forward dma-buf mmap to the gem mmap implementations.
+Would be great to refactor this all into a set of small common helpers.
+
+Contact: Daniel Vetter
+
+Put a reservation_object into drm_gem_object
+--------------------------------------------
+
+This would remove the need for the ->gem_prime_res_obj callback. It would also
+allow us to implement generic helpers for waiting for a bo, allowing for quite a
+bit of refactoring in the various wait ioctl implementations.
+
+Contact: Daniel Vetter
+
 idr_init_base()
 ---------------
 

Documentation/gpu/xen-front.rst

+====================================================
+ drm/xen-front Xen para-virtualized frontend driver
+====================================================
+
+This frontend driver implements Xen para-virtualized display
+according to the display protocol described at
+include/xen/interface/io/displif.h
+
+Driver modes of operation in terms of display buffers used
+==========================================================
+
+.. kernel-doc:: drivers/gpu/drm/xen/xen_drm_front.h
+   :doc: Driver modes of operation in terms of display buffers used
+
+Buffers allocated by the frontend driver
+----------------------------------------
+
+.. kernel-doc:: drivers/gpu/drm/xen/xen_drm_front.h
+   :doc: Buffers allocated by the frontend driver
+
+Buffers allocated by the backend
+--------------------------------
+
+.. kernel-doc:: drivers/gpu/drm/xen/xen_drm_front.h
+   :doc: Buffers allocated by the backend
+
+Driver limitations
+==================
+
+.. kernel-doc:: drivers/gpu/drm/xen/xen_drm_front.h
+   :doc: Driver limitations

MAINTAINERS

@@ -4830,6 +4830,15 @@ S:	Maintained
 F:	drivers/gpu/drm/tinydrm/
 F:	include/drm/tinydrm/
 
+DRM DRIVERS FOR XEN
+M:	Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+L:	dri-devel@lists.freedesktop.org
+L:	xen-devel@lists.xen.org
+S:	Supported
+F:	drivers/gpu/drm/xen/
+F:	Documentation/gpu/xen-front.rst
+
 DRM TTM SUBSYSTEM
 M:	Christian Koenig <christian.koenig@amd.com>
 M:	Roger He <Hongbo.He@amd.com>

drivers/gpu/drm/Kconfig

@@ -289,6 +289,8 @@ source "drivers/gpu/drm/pl111/Kconfig"
 
 source "drivers/gpu/drm/tve200/Kconfig"
 
+source "drivers/gpu/drm/xen/Kconfig"
+
 # Keep legacy drivers last
 
 menuconfig DRM_LEGACY

drivers/gpu/drm/Makefile

@@ -103,3 +103,4 @@ obj-$(CONFIG_DRM_MXSFB)	+= mxsfb/
 obj-$(CONFIG_DRM_TINYDRM) += tinydrm/
 obj-$(CONFIG_DRM_PL111) += pl111/
 obj-$(CONFIG_DRM_TVE200) += tve200/
+obj-$(CONFIG_DRM_XEN) += xen/

drivers/gpu/drm/ast/ast_mode.c

@@ -799,7 +799,7 @@ static int ast_get_modes(struct drm_connector *connector)
 	return 0;
 }
 
-static int ast_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status ast_mode_valid(struct drm_connector *connector,
 			  struct drm_display_mode *mode)
 {
 	struct ast_private *ast = connector->dev->dev_private;

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h

@@ -299,7 +299,6 @@ struct atmel_hlcdc_layer {
 struct atmel_hlcdc_plane {
 	struct drm_plane base;
 	struct atmel_hlcdc_layer layer;
-	struct atmel_hlcdc_plane_properties *properties;
 };
 
 static inline struct atmel_hlcdc_plane *
@@ -345,18 +344,6 @@ struct atmel_hlcdc_dc_desc {
 	int nlayers;
 };
 
-/**
- * Atmel HLCDC Plane properties.
- *
- * This structure stores plane property definitions.
- *
- * @alpha: alpha blending (or transparency) property
- * @rotation: rotation property
- */
-struct atmel_hlcdc_plane_properties {
-	struct drm_property *alpha;
-};
-
 /**
  * Atmel HLCDC Display Controller.
  *

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c

@@ -31,7 +31,6 @@
  * @src_y: y buffer position
  * @src_w: buffer width
  * @src_h: buffer height
- * @alpha: alpha blending of the plane
  * @disc_x: x discard position
  * @disc_y: y discard position
  * @disc_w: discard width
@@ -54,8 +53,6 @@ struct atmel_hlcdc_plane_state {
 	uint32_t src_w;
 	uint32_t src_h;
 
-	u8 alpha;
-
 	int disc_x;
 	int disc_y;
 	int disc_w;
@@ -385,7 +382,7 @@ atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
 			cfg |= ATMEL_HLCDC_LAYER_LAEN;
 		else
 			cfg |= ATMEL_HLCDC_LAYER_GAEN |
-			       ATMEL_HLCDC_LAYER_GA(state->alpha);
+			       ATMEL_HLCDC_LAYER_GA(state->base.alpha >> 8);
 	}
 
 	if (state->disc_h && state->disc_w)
@@ -553,7 +550,7 @@ atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
 
 		if (!ovl_s->fb ||
 		    ovl_s->fb->format->has_alpha ||
-		    ovl_state->alpha != 255)
+		    ovl_s->alpha != DRM_BLEND_ALPHA_OPAQUE)
 			continue;
 
 		/* TODO: implement a smarter hidden area detection */
@@ -829,51 +826,18 @@ static void atmel_hlcdc_plane_destroy(struct drm_plane *p)
 	drm_plane_cleanup(p);
 }
 
-static int atmel_hlcdc_plane_atomic_set_property(struct drm_plane *p,
-						 struct drm_plane_state *s,
-						 struct drm_property *property,
-						 uint64_t val)
-{
-	struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
-	struct atmel_hlcdc_plane_properties *props = plane->properties;
-	struct atmel_hlcdc_plane_state *state =
-			drm_plane_state_to_atmel_hlcdc_plane_state(s);
-
-	if (property == props->alpha)
-		state->alpha = val;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-
-static int atmel_hlcdc_plane_atomic_get_property(struct drm_plane *p,
-					const struct drm_plane_state *s,
-					struct drm_property *property,
-					uint64_t *val)
-{
-	struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
-	struct atmel_hlcdc_plane_properties *props = plane->properties;
-	const struct atmel_hlcdc_plane_state *state =
-		container_of(s, const struct atmel_hlcdc_plane_state, base);
-
-	if (property == props->alpha)
-		*val = state->alpha;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-
-static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane,
-				struct atmel_hlcdc_plane_properties *props)
+static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane)
 {
 	const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
 
 	if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
-	    desc->type == ATMEL_HLCDC_CURSOR_LAYER)
-		drm_object_attach_property(&plane->base.base,
-					   props->alpha, 255);
+	    desc->type == ATMEL_HLCDC_CURSOR_LAYER) {
+		int ret;
+
+		ret = drm_plane_create_alpha_property(&plane->base);
+		if (ret)
+			return ret;
+	}
 
 	if (desc->layout.xstride && desc->layout.pstride) {
 		int ret;
@@ -988,8 +952,8 @@ static void atmel_hlcdc_plane_reset(struct drm_plane *p)
 			return;
 		}
 
-		state->alpha = 255;
 		p->state = &state->base;
+		p->state->alpha = DRM_BLEND_ALPHA_OPAQUE;
 		p->state->plane = p;
 	}
 }
@@ -1042,13 +1006,10 @@ static const struct drm_plane_funcs layer_plane_funcs = {
 	.reset = atmel_hlcdc_plane_reset,
 	.atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
 	.atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
-	.atomic_set_property = atmel_hlcdc_plane_atomic_set_property,
-	.atomic_get_property = atmel_hlcdc_plane_atomic_get_property,
 };
 
 static int atmel_hlcdc_plane_create(struct drm_device *dev,
-				    const struct atmel_hlcdc_layer_desc *desc,
-				    struct atmel_hlcdc_plane_properties *props)
+				    const struct atmel_hlcdc_layer_desc *desc)
 {
 	struct atmel_hlcdc_dc *dc = dev->dev_private;
 	struct atmel_hlcdc_plane *plane;
@@ -1060,7 +1021,6 @@ static int atmel_hlcdc_plane_create(struct drm_device *dev,
 		return -ENOMEM;
 
 	atmel_hlcdc_layer_init(&plane->layer, desc, dc->hlcdc->regmap);
-	plane->properties = props;
 
 	if (desc->type == ATMEL_HLCDC_BASE_LAYER)
 		type = DRM_PLANE_TYPE_PRIMARY;
@@ -1081,7 +1041,7 @@ static int atmel_hlcdc_plane_create(struct drm_device *dev,
 			     &atmel_hlcdc_layer_plane_helper_funcs);
 
 	/* Set default property values*/
-	ret = atmel_hlcdc_plane_init_properties(plane, props);
+	ret = atmel_hlcdc_plane_init_properties(plane);
 	if (ret)
 		return ret;
 
@@ -1090,34 +1050,13 @@ static int atmel_hlcdc_plane_create(struct drm_device *dev,
 	return 0;
 }
 
-static struct atmel_hlcdc_plane_properties *
-atmel_hlcdc_plane_create_properties(struct drm_device *dev)
-{
-	struct atmel_hlcdc_plane_properties *props;
-
-	props = devm_kzalloc(dev->dev, sizeof(*props), GFP_KERNEL);
-	if (!props)
-		return ERR_PTR(-ENOMEM);
-
-	props->alpha = drm_property_create_range(dev, 0, "alpha", 0, 255);
-	if (!props->alpha)
-		return ERR_PTR(-ENOMEM);
-
-	return props;
-}
-
 int atmel_hlcdc_create_planes(struct drm_device *dev)
 {
 	struct atmel_hlcdc_dc *dc = dev->dev_private;
-	struct atmel_hlcdc_plane_properties *props;
 	const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers;
 	int nlayers = dc->desc->nlayers;
 	int i, ret;
 
-	props = atmel_hlcdc_plane_create_properties(dev);
-	if (IS_ERR(props))
-		return PTR_ERR(props);
-
 	dc->dscrpool = dmam_pool_create("atmel-hlcdc-dscr", dev->dev,
 				sizeof(struct atmel_hlcdc_dma_channel_dscr),
 				sizeof(u64), 0);
@@ -1130,7 +1069,7 @@ int atmel_hlcdc_create_planes(struct drm_device *dev)
 		    descs[i].type != ATMEL_HLCDC_CURSOR_LAYER)
 			continue;
 
-		ret = atmel_hlcdc_plane_create(dev, &descs[i], props);
+		ret = atmel_hlcdc_plane_create(dev, &descs[i]);
 		if (ret)
 			return ret;
 	}

drivers/gpu/drm/bochs/bochs_kms.c

@@ -188,7 +188,7 @@ static int bochs_connector_get_modes(struct drm_connector *connector)
 	return count;
 }
 
-static int bochs_connector_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status bochs_connector_mode_valid(struct drm_connector *connector,
 				      struct drm_display_mode *mode)
 {
 	struct bochs_device *bochs =

drivers/gpu/drm/bridge/Kconfig

@@ -25,6 +25,16 @@ config DRM_ANALOGIX_ANX78XX
 	  the HDMI output of an application processor to MyDP
 	  or DisplayPort.
 
+config DRM_CDNS_DSI
+	tristate "Cadence DPI/DSI bridge"
+	select DRM_KMS_HELPER
+	select DRM_MIPI_DSI
+	select DRM_PANEL_BRIDGE
+	depends on OF
+	help
+	  Support Cadence DPI to DSI bridge. This is an internal
+	  bridge and is meant to be directly embedded in a SoC.
+
 config DRM_DUMB_VGA_DAC
 	tristate "Dumb VGA DAC Bridge support"
 	depends on OF
@@ -93,6 +103,12 @@ config DRM_SII9234
 	  It is an I2C driver, that detects connection of MHL bridge
 	  and starts encapsulation of HDMI signal.
 
+config DRM_THINE_THC63LVD1024
+	tristate "Thine THC63LVD1024 LVDS decoder bridge"
+	depends on OF
+	---help---
+	  Thine THC63LVD1024 LVDS/parallel converter driver.
+
 config DRM_TOSHIBA_TC358767
 	tristate "Toshiba TC358767 eDP bridge"
 	depends on OF

drivers/gpu/drm/bridge/Makefile

 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o
+obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o
 obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o
 obj-$(CONFIG_DRM_LVDS_ENCODER) += lvds-encoder.o
 obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o
@@ -8,6 +9,7 @@ obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
 obj-$(CONFIG_DRM_SIL_SII8620) += sil-sii8620.o
 obj-$(CONFIG_DRM_SII902X) += sii902x.o
 obj-$(CONFIG_DRM_SII9234) += sii9234.o
+obj-$(CONFIG_DRM_THINE_THC63LVD1024) += thc63lvd1024.o
 obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o
 obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
 obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/

drivers/gpu/drm/bridge/adv7511/adv7511.h

@@ -93,6 +93,11 @@
 #define ADV7511_REG_CHIP_ID_HIGH		0xf5
 #define ADV7511_REG_CHIP_ID_LOW			0xf6
 
+/* Hardware defined default addresses for I2C register maps */
+#define ADV7511_CEC_I2C_ADDR_DEFAULT		0x3c
+#define ADV7511_EDID_I2C_ADDR_DEFAULT		0x3f
+#define ADV7511_PACKET_I2C_ADDR_DEFAULT		0x38
+
 #define ADV7511_CSC_ENABLE			BIT(7)
 #define ADV7511_CSC_UPDATE_MODE			BIT(5)
 
@@ -321,6 +326,7 @@ enum adv7511_type {
 struct adv7511 {
 	struct i2c_client *i2c_main;
 	struct i2c_client *i2c_edid;
+	struct i2c_client *i2c_packet;
 	struct i2c_client *i2c_cec;
 
 	struct regmap *regmap;

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

@@ -586,7 +586,7 @@ static int adv7511_get_modes(struct adv7511 *adv7511,
 	/* Reading the EDID only works if the device is powered */
 	if (!adv7511->powered) {
 		unsigned int edid_i2c_addr =
-					(adv7511->i2c_main->addr << 1) + 4;
+					(adv7511->i2c_edid->addr << 1);
 
 		__adv7511_power_on(adv7511);
 
@@ -654,7 +654,7 @@ adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector)
 	return status;
 }
 
-static int adv7511_mode_valid(struct adv7511 *adv7511,
+static enum drm_mode_status adv7511_mode_valid(struct adv7511 *adv7511,
 			      struct drm_display_mode *mode)
 {
 	if (mode->clock > 165000)
@@ -969,10 +969,10 @@ static int adv7511_init_cec_regmap(struct adv7511 *adv)
 {
 	int ret;
 
-	adv->i2c_cec = i2c_new_dummy(adv->i2c_main->adapter,
-				     adv->i2c_main->addr - 1);
+	adv->i2c_cec = i2c_new_secondary_device(adv->i2c_main, "cec",
+						ADV7511_CEC_I2C_ADDR_DEFAULT);
 	if (!adv->i2c_cec)
-		return -ENOMEM;
+		return -EINVAL;
 	i2c_set_clientdata(adv->i2c_cec, adv);
 
 	adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec,
@@ -1082,8 +1082,6 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	struct adv7511_link_config link_config;
 	struct adv7511 *adv7511;
 	struct device *dev = &i2c->dev;
-	unsigned int main_i2c_addr = i2c->addr << 1;
-	unsigned int edid_i2c_addr = main_i2c_addr + 4;
 	unsigned int val;
 	int ret;
 
@@ -1153,23 +1151,34 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	if (ret)
 		goto uninit_regulators;
 
-	regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, edid_i2c_addr);
-	regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
-		     main_i2c_addr - 0xa);
-	regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR,
-		     main_i2c_addr - 2);
-
 	adv7511_packet_disable(adv7511, 0xffff);
 
-	adv7511->i2c_edid = i2c_new_dummy(i2c->adapter, edid_i2c_addr >> 1);
+	adv7511->i2c_edid = i2c_new_secondary_device(i2c, "edid",
+					ADV7511_EDID_I2C_ADDR_DEFAULT);
 	if (!adv7511->i2c_edid) {
-		ret = -ENOMEM;
+		ret = -EINVAL;
 		goto uninit_regulators;
 	}
 
+	regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR,
+		     adv7511->i2c_edid->addr << 1);
+
+	adv7511->i2c_packet = i2c_new_secondary_device(i2c, "packet",
+					ADV7511_PACKET_I2C_ADDR_DEFAULT);
+	if (!adv7511->i2c_packet) {
+		ret = -EINVAL;
+		goto err_i2c_unregister_edid;
+	}
+
+	regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
+		     adv7511->i2c_packet->addr << 1);
+
 	ret = adv7511_init_cec_regmap(adv7511);
 	if (ret)
-		goto err_i2c_unregister_edid;
+		goto err_i2c_unregister_packet;
+
+	regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR,
+		     adv7511->i2c_cec->addr << 1);
 
 	INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work);
 
@@ -1207,6 +1216,8 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	i2c_unregister_device(adv7511->i2c_cec);
 	if (adv7511->cec_clk)
 		clk_disable_unprepare(adv7511->cec_clk);
+err_i2c_unregister_packet:
+	i2c_unregister_device(adv7511->i2c_packet);
 err_i2c_unregister_edid:
 	i2c_unregister_device(adv7511->i2c_edid);
 uninit_regulators:
@@ -1233,6 +1244,7 @@ static int adv7511_remove(struct i2c_client *i2c)
 
 	cec_unregister_adapter(adv7511->cec_adap);
 
+	i2c_unregister_device(adv7511->i2c_packet);
 	i2c_unregister_device(adv7511->i2c_edid);
 
 	return 0;

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c

@@ -43,8 +43,10 @@ struct bridge_init {
 	struct device_node *node;
 };
 
-static void analogix_dp_init_dp(struct analogix_dp_device *dp)
+static int analogix_dp_init_dp(struct analogix_dp_device *dp)
 {
+	int ret;
+
 	analogix_dp_reset(dp);
 
 	analogix_dp_swreset(dp);
@@ -56,10 +58,13 @@ static void analogix_dp_init_dp(struct analogix_dp_device *dp)
 	analogix_dp_enable_sw_function(dp);
 
 	analogix_dp_config_interrupt(dp);
-	analogix_dp_init_analog_func(dp);
+	ret = analogix_dp_init_analog_func(dp);
+	if (ret)
+		return ret;
 
 	analogix_dp_init_hpd(dp);
 	analogix_dp_init_aux(dp);
+	return 0;
 }
 
 static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
@@ -71,7 +76,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
 			return 0;
 
 		timeout_loop++;
-		usleep_range(10, 11);
+		usleep_range(1000, 1100);
 	}
 
 	/*
@@ -148,87 +153,146 @@ int analogix_dp_disable_psr(struct analogix_dp_device *dp)
 	psr_vsc.DB1 = 0;
 
 	ret = drm_dp_dpcd_writeb(&dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
-	if (ret != 1)
+	if (ret != 1) {
 		dev_err(dp->dev, "Failed to set DP Power0 %d\n", ret);
+		return ret;
+	}
 
 	return analogix_dp_send_psr_spd(dp, &psr_vsc, false);
 }
 EXPORT_SYMBOL_GPL(analogix_dp_disable_psr);
 
-static bool analogix_dp_detect_sink_psr(struct analogix_dp_device *dp)
+static int analogix_dp_detect_sink_psr(struct analogix_dp_device *dp)
 {
 	unsigned char psr_version;
+	int ret;
+
+	ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_SUPPORT, &psr_version);
+	if (ret != 1) {
+		dev_err(dp->dev, "failed to get PSR version, disable it\n");
+		return ret;
+	}
 
-	drm_dp_dpcd_readb(&dp->aux, DP_PSR_SUPPORT, &psr_version);
 	dev_dbg(dp->dev, "Panel PSR version : %x\n", psr_version);
 
-	return (psr_version & DP_PSR_IS_SUPPORTED) ? true : false;
+	dp->psr_enable = (psr_version & DP_PSR_IS_SUPPORTED) ? true : false;
+
+	return 0;
 }
 
-static void analogix_dp_enable_sink_psr(struct analogix_dp_device *dp)
+static int analogix_dp_enable_sink_psr(struct analogix_dp_device *dp)
 {
 	unsigned char psr_en;
+	int ret;
 
 	/* Disable psr function */
-	drm_dp_dpcd_readb(&dp->aux, DP_PSR_EN_CFG, &psr_en);
+	ret = drm_dp_dpcd_readb(&dp->aux, DP_PSR_EN_CFG, &psr_en);
+	if (ret != 1) {
+		dev_err(dp->dev, "failed to get psr config\n");
+		goto end;
+	}
+
 	psr_en &= ~DP_PSR_ENABLE;
-	drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+	ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+	if (ret != 1) {
+		dev_err(dp->dev, "failed to disable panel psr\n");
+		goto end;
+	}
 
 	/* Main-Link transmitter remains active during PSR active states */
 	psr_en = DP_PSR_MAIN_LINK_ACTIVE | DP_PSR_CRC_VERIFICATION;
-	drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+	ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+	if (ret != 1) {
+		dev_err(dp->dev, "failed to set panel psr\n");
+		goto end;
+	}
 
 	/* Enable psr function */
 	psr_en = DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE |
 		 DP_PSR_CRC_VERIFICATION;
-	drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+	ret = drm_dp_dpcd_writeb(&dp->aux, DP_PSR_EN_CFG, psr_en);
+	if (ret != 1) {
+		dev_err(dp->dev, "failed to set panel psr\n");
+		goto end;
+	}
 
 	analogix_dp_enable_psr_crc(dp);
+
+	return 0;
+end:
+	dev_err(dp->dev, "enable psr fail, force to disable psr\n");
+	dp->psr_enable = false;
+
+	return ret;
 }
 
-static void
+static int
 analogix_dp_enable_rx_to_enhanced_mode(struct analogix_dp_device *dp,
 				       bool enable)
 {
 	u8 data;
+	int ret;
 
-	drm_dp_dpcd_readb(&dp->aux, DP_LANE_COUNT_SET, &data);
+	ret = drm_dp_dpcd_readb(&dp->aux, DP_LANE_COUNT_SET, &data);
+	if (ret != 1)
+		return ret;
 
 	if (enable)
-		drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
-				   DP_LANE_COUNT_ENHANCED_FRAME_EN |
-					DPCD_LANE_COUNT_SET(data));
+		ret = drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
+					 DP_LANE_COUNT_ENHANCED_FRAME_EN |
+					 DPCD_LANE_COUNT_SET(data));
 	else
-		drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
-				   DPCD_LANE_COUNT_SET(data));
+		ret = drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
+					 DPCD_LANE_COUNT_SET(data));
+
+	return ret < 0 ? ret : 0;
 }
 
-static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp)
+static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp,
+						  u8 *enhanced_mode_support)
 {
 	u8 data;
-	int retval;
+	int ret;
 
-	drm_dp_dpcd_readb(&dp->aux, DP_MAX_LANE_COUNT, &data);
-	retval = DPCD_ENHANCED_FRAME_CAP(data);
+	ret = drm_dp_dpcd_readb(&dp->aux, DP_MAX_LANE_COUNT, &data);
+	if (ret != 1) {
+		*enhanced_mode_support = 0;
+		return ret;
+	}
 
-	return retval;
+	*enhanced_mode_support = DPCD_ENHANCED_FRAME_CAP(data);
+
+	return 0;
 }
 
-static void analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp)
+static int analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp)
 {
 	u8 data;
+	int ret;
+
+	ret = analogix_dp_is_enhanced_mode_available(dp, &data);
+	if (ret < 0)
+		return ret;
+
+	ret = analogix_dp_enable_rx_to_enhanced_mode(dp, data);
+	if (ret < 0)
+		return ret;
 
-	data = analogix_dp_is_enhanced_mode_available(dp);
-	analogix_dp_enable_rx_to_enhanced_mode(dp, data);
 	analogix_dp_enable_enhanced_mode(dp, data);
+
+	return 0;
 }
 
-static void analogix_dp_training_pattern_dis(struct analogix_dp_device *dp)
+static int analogix_dp_training_pattern_dis(struct analogix_dp_device *dp)
 {
+	int ret;
+
 	analogix_dp_set_training_pattern(dp, DP_NONE);
 
-	drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
-			   DP_TRAINING_PATTERN_DISABLE);
+	ret = drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
+				 DP_TRAINING_PATTERN_DISABLE);
+
+	return ret < 0 ? ret : 0;
 }
 
 static void
@@ -276,6 +340,12 @@ static int analogix_dp_link_start(struct analogix_dp_device *dp)
 	retval = drm_dp_dpcd_write(&dp->aux, DP_LINK_BW_SET, buf, 2);
 	if (retval < 0)
 		return retval;
+	/* set enhanced mode if available */
+	retval = analogix_dp_set_enhanced_mode(dp);
+	if (retval < 0) {
+		dev_err(dp->dev, "failed to set enhance mode\n");
+		return retval;
+	}
 
 	/* Set TX pre-emphasis to minimum */
 	for (lane = 0; lane < lane_count; lane++)
@@ -531,7 +601,7 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
 {
 	int lane, lane_count, retval;
 	u32 reg;
-	u8 link_align, link_status[2], adjust_request[2], spread;
+	u8 link_align, link_status[2], adjust_request[2];
 
 	usleep_range(400, 401);
 
@@ -560,10 +630,11 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
 
 	if (!analogix_dp_channel_eq_ok(link_status, link_align, lane_count)) {
 		/* traing pattern Set to Normal */
-		analogix_dp_training_pattern_dis(dp);
+		retval = analogix_dp_training_pattern_dis(dp);
+		if (retval < 0)
+			return retval;
 
 		dev_info(dp->dev, "Link Training success!\n");
-
 		analogix_dp_get_link_bandwidth(dp, &reg);
 		dp->link_train.link_rate = reg;
 		dev_dbg(dp->dev, "final bandwidth = %.2x\n",
@@ -574,22 +645,6 @@ static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
 		dev_dbg(dp->dev, "final lane count = %.2x\n",
 			dp->link_train.lane_count);
 
-		retval = drm_dp_dpcd_readb(&dp->aux, DP_MAX_DOWNSPREAD,
-					   &spread);
-		if (retval != 1) {
-			dev_err(dp->dev, "failed to read downspread %d\n",
-				retval);
-			dp->fast_train_support = false;
-		} else {
-			dp->fast_train_support =
-				(spread & DP_NO_AUX_HANDSHAKE_LINK_TRAINING) ?
-					true : false;
-		}
-		dev_dbg(dp->dev, "fast link training %s\n",
-			dp->fast_train_support ? "supported" : "unsupported");
-
-		/* set enhanced mode if available */
-		analogix_dp_set_enhanced_mode(dp);
 		dp->link_train.lt_state = FINISHED;
 
 		return 0;
@@ -793,7 +848,7 @@ static int analogix_dp_fast_link_train(struct analogix_dp_device *dp)
 
 static int analogix_dp_train_link(struct analogix_dp_device *dp)
 {
-	if (dp->fast_train_support)
+	if (dp->fast_train_enable)
 		return analogix_dp_fast_link_train(dp);
 
 	return analogix_dp_full_link_train(dp, dp->video_info.max_lane_count,
@@ -819,11 +874,10 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 		if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
 			break;
 		if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
-			dev_err(dp->dev, "Timeout of video streamclk ok\n");
+			dev_err(dp->dev, "Timeout of slave video streamclk ok\n");
 			return -ETIMEDOUT;
 		}
-
-		usleep_range(1, 2);
+		usleep_range(1000, 1001);
 	}
 
 	/* Set to use the register calculated M/N video */
@@ -838,6 +892,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 	/* Configure video slave mode */
 	analogix_dp_enable_video_master(dp, 0);
 
+	/* Enable video */
+	analogix_dp_start_video(dp);
+
 	timeout_loop = 0;
 
 	for (;;) {
@@ -850,8 +907,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 			done_count = 0;
 		}
 		if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
-			dev_err(dp->dev, "Timeout of video streamclk ok\n");
-			return -ETIMEDOUT;
+			dev_warn(dp->dev,
+				 "Ignoring timeout of video streamclk ok\n");
+			break;
 		}
 
 		usleep_range(1000, 1001);
@@ -860,24 +918,32 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 	return 0;
 }
 
-static void analogix_dp_enable_scramble(struct analogix_dp_device *dp,
-					bool enable)
+static int analogix_dp_enable_scramble(struct analogix_dp_device *dp,
+				       bool enable)
 {
 	u8 data;
+	int ret;
 
 	if (enable) {
 		analogix_dp_enable_scrambling(dp);
 
-		drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET, &data);
-		drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
+		ret = drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET,
+					&data);
+		if (ret != 1)
+			return ret;
+		ret = drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
 				   (u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
 	} else {
 		analogix_dp_disable_scrambling(dp);
 
-		drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET, &data);
-		drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
+		ret = drm_dp_dpcd_readb(&dp->aux, DP_TRAINING_PATTERN_SET,
+					&data);
+		if (ret != 1)
+			return ret;
+		ret = drm_dp_dpcd_writeb(&dp->aux, DP_TRAINING_PATTERN_SET,
 				   (u8)(data | DP_LINK_SCRAMBLING_DISABLE));
 	}
+	return ret < 0 ? ret : 0;
 }
 
 static irqreturn_t analogix_dp_hardirq(int irq, void *arg)
@@ -916,7 +982,23 @@ static irqreturn_t analogix_dp_irq_thread(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static void analogix_dp_commit(struct analogix_dp_device *dp)
+static int analogix_dp_fast_link_train_detection(struct analogix_dp_device *dp)
+{
+	int ret;
+	u8 spread;
+
+	ret = drm_dp_dpcd_readb(&dp->aux, DP_MAX_DOWNSPREAD, &spread);
+	if (ret != 1) {
+		dev_err(dp->dev, "failed to read downspread %d\n", ret);
+		return ret;
+	}
+	dp->fast_train_enable = !!(spread & DP_NO_AUX_HANDSHAKE_LINK_TRAINING);
+	dev_dbg(dp->dev, "fast link training %s\n",
+		dp->fast_train_enable ? "supported" : "unsupported");
+	return 0;
+}
+
+static int analogix_dp_commit(struct analogix_dp_device *dp)
 {
 	int ret;
 
@@ -926,34 +1008,50 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
 			DRM_ERROR("failed to disable the panel\n");
 	}
 
-	ret = readx_poll_timeout(analogix_dp_train_link, dp, ret, !ret, 100,
-				 DP_TIMEOUT_TRAINING_US * 5);
+	ret = analogix_dp_train_link(dp);
 	if (ret) {
 		dev_err(dp->dev, "unable to do link train, ret=%d\n", ret);
-		return;
+		return ret;
 	}
 
-	analogix_dp_enable_scramble(dp, 1);
-	analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
-	analogix_dp_enable_enhanced_mode(dp, 1);
+	ret = analogix_dp_enable_scramble(dp, 1);
+	if (ret < 0) {
+		dev_err(dp->dev, "can not enable scramble\n");
+		return ret;
+	}
 
 	analogix_dp_init_video(dp);
 	ret = analogix_dp_config_video(dp);
-	if (ret)
+	if (ret) {
 		dev_err(dp->dev, "unable to config video\n");
+		return ret;
+	}
 
 	/* Safe to enable the panel now */
 	if (dp->plat_data->panel) {
-		if (drm_panel_enable(dp->plat_data->panel))
+		ret = drm_panel_enable(dp->plat_data->panel);
+		if (ret) {
 			DRM_ERROR("failed to enable the panel\n");
+			return ret;
+		}
 	}
 
-	/* Enable video */
-	analogix_dp_start_video(dp);
+	ret = analogix_dp_detect_sink_psr(dp);
+	if (ret)
+		return ret;
 
-	dp->psr_enable = analogix_dp_detect_sink_psr(dp);
-	if (dp->psr_enable)
-		analogix_dp_enable_sink_psr(dp);
+	if (dp->psr_enable) {
+		ret = analogix_dp_enable_sink_psr(dp);
+		if (ret)
+			return ret;
+	}
+
+	/* Check whether panel supports fast training */
+	ret =  analogix_dp_fast_link_train_detection(dp);
+	if (ret)
+		dp->psr_enable = false;
+
+	return ret;
 }
 
 /*
@@ -1150,24 +1248,80 @@ static void analogix_dp_bridge_pre_enable(struct drm_bridge *bridge)
 		DRM_ERROR("failed to setup the panel ret = %d\n", ret);
 }
 
-static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
+static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
-
-	if (dp->dpms_mode == DRM_MODE_DPMS_ON)
-		return;
+	int ret;
 
 	pm_runtime_get_sync(dp->dev);
 
-	if (dp->plat_data->power_on)
-		dp->plat_data->power_on(dp->plat_data);
+	ret = clk_prepare_enable(dp->clock);
+	if (ret < 0) {
+		DRM_ERROR("Failed to prepare_enable the clock clk [%d]\n", ret);
+		goto out_dp_clk_pre;
+	}
+
+	if (dp->plat_data->power_on_start)
+		dp->plat_data->power_on_start(dp->plat_data);
 
 	phy_power_on(dp->phy);
-	analogix_dp_init_dp(dp);
+
+	ret = analogix_dp_init_dp(dp);
+	if (ret)
+		goto out_dp_init;
+
+	/*
+	 * According to DP spec v1.3 chap 3.5.1.2 Link Training,
+	 * We should first make sure the HPD signal is asserted high by device
+	 * when we want to establish a link with it.
+	 */
+	ret = analogix_dp_detect_hpd(dp);
+	if (ret) {
+		DRM_ERROR("failed to get hpd single ret = %d\n", ret);
+		goto out_dp_init;
+	}
+
+	ret = analogix_dp_commit(dp);
+	if (ret) {
+		DRM_ERROR("dp commit error, ret = %d\n", ret);
+		goto out_dp_init;
+	}
+
+	if (dp->plat_data->power_on_end)
+		dp->plat_data->power_on_end(dp->plat_data);
+
 	enable_irq(dp->irq);
-	analogix_dp_commit(dp);
+	return 0;
 
-	dp->dpms_mode = DRM_MODE_DPMS_ON;
+out_dp_init:
+	phy_power_off(dp->phy);
+	if (dp->plat_data->power_off)
+		dp->plat_data->power_off(dp->plat_data);
+	clk_disable_unprepare(dp->clock);
+out_dp_clk_pre:
+	pm_runtime_put_sync(dp->dev);
+
+	return ret;
+}
+
+static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
+{
+	struct analogix_dp_device *dp = bridge->driver_private;
+	int timeout_loop = 0;
+
+	if (dp->dpms_mode == DRM_MODE_DPMS_ON)
+		return;
+
+	while (timeout_loop < MAX_PLL_LOCK_LOOP) {
+		if (analogix_dp_set_bridge(dp) == 0) {
+			dp->dpms_mode = DRM_MODE_DPMS_ON;
+			return;
+		}
+		dev_err(dp->dev, "failed to set bridge, retry: %d\n",
+			timeout_loop);
+		timeout_loop++;
+		usleep_range(10, 11);
+	}
+	dev_err(dp->dev, "too many times retry set bridge, give it up\n");
 }
 
 static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
@@ -1186,11 +1340,15 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 	}
 
 	disable_irq(dp->irq);
-	phy_power_off(dp->phy);
 
 	if (dp->plat_data->power_off)
 		dp->plat_data->power_off(dp->plat_data);
 
+	analogix_dp_set_analog_power_down(dp, POWER_ALL, 1);
+	phy_power_off(dp->phy);
+
+	clk_disable_unprepare(dp->clock);
+
 	pm_runtime_put_sync(dp->dev);
 
 	ret = analogix_dp_prepare_panel(dp, false, true);
@@ -1198,6 +1356,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 		DRM_ERROR("failed to setup the panel ret = %d\n", ret);
 
 	dp->psr_enable = false;
+	dp->fast_train_enable = false;
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
 }
 

drivers/gpu/drm/bridge/analogix/analogix_dp_core.h

@@ -19,6 +19,7 @@
 #define DP_TIMEOUT_LOOP_COUNT 100
 #define MAX_CR_LOOP 5
 #define MAX_EQ_LOOP 5
+#define MAX_PLL_LOCK_LOOP 5
 
 /* Training takes 22ms if AUX channel comm fails. Use this as retry interval */
 #define DP_TIMEOUT_TRAINING_US			22000
@@ -173,7 +174,7 @@ struct analogix_dp_device {
 	int			hpd_gpio;
 	bool                    force_hpd;
 	bool			psr_enable;
-	bool			fast_train_support;
+	bool			fast_train_enable;
 
 	struct mutex		panel_lock;
 	bool			panel_is_modeset;
@@ -197,7 +198,7 @@ void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable);
 void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
 				       enum analog_power_block block,
 				       bool enable);
-void analogix_dp_init_analog_func(struct analogix_dp_device *dp);
+int analogix_dp_init_analog_func(struct analogix_dp_device *dp);
 void analogix_dp_init_hpd(struct analogix_dp_device *dp);
 void analogix_dp_force_hpd(struct analogix_dp_device *dp);
 enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp);

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c

@@ -126,9 +126,14 @@ void analogix_dp_reset(struct analogix_dp_device *dp)
 	analogix_dp_stop_video(dp);
 	analogix_dp_enable_video_mute(dp, 0);
 
-	reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
-		AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
-		HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+	if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+		reg = RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N |
+			SW_FUNC_EN_N;
+	else
+		reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
+			AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
+			HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+
 	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
 
 	reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
@@ -230,16 +235,20 @@ enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp)
 void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable)
 {
 	u32 reg;
+	u32 mask = DP_PLL_PD;
+	u32 pd_addr = ANALOGIX_DP_PLL_CTL;
 
-	if (enable) {
-		reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
-		reg |= DP_PLL_PD;
-		writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
-	} else {
-		reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
-		reg &= ~DP_PLL_PD;
-		writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+	if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
+		pd_addr = ANALOGIX_DP_PD;
+		mask = RK_PLL_PD;
 	}
+
+	reg = readl(dp->reg_base + pd_addr);
+	if (enable)
+		reg |= mask;
+	else
+		reg &= ~mask;
+	writel(reg, dp->reg_base + pd_addr);
 }
 
 void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
@@ -248,83 +257,98 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
 {
 	u32 reg;
 	u32 phy_pd_addr = ANALOGIX_DP_PHY_PD;
+	u32 mask;
 
 	if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
 		phy_pd_addr = ANALOGIX_DP_PD;
 
 	switch (block) {
 	case AUX_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg |= AUX_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		} else {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg &= ~AUX_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		}
+		if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+			mask = RK_AUX_PD;
+		else
+			mask = AUX_PD;
+
+		reg = readl(dp->reg_base + phy_pd_addr);
+		if (enable)
+			reg |= mask;
+		else
+			reg &= ~mask;
+		writel(reg, dp->reg_base + phy_pd_addr);
 		break;
 	case CH0_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg |= CH0_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		} else {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg &= ~CH0_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		}
+		mask = CH0_PD;
+		reg = readl(dp->reg_base + phy_pd_addr);
+
+		if (enable)
+			reg |= mask;
+		else
+			reg &= ~mask;
+		writel(reg, dp->reg_base + phy_pd_addr);
 		break;
 	case CH1_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg |= CH1_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		} else {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg &= ~CH1_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		}
+		mask = CH1_PD;
+		reg = readl(dp->reg_base + phy_pd_addr);
+
+		if (enable)
+			reg |= mask;
+		else
+			reg &= ~mask;
+		writel(reg, dp->reg_base + phy_pd_addr);
 		break;
 	case CH2_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg |= CH2_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		} else {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg &= ~CH2_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		}
+		mask = CH2_PD;
+		reg = readl(dp->reg_base + phy_pd_addr);
+
+		if (enable)
+			reg |= mask;
+		else
+			reg &= ~mask;
+		writel(reg, dp->reg_base + phy_pd_addr);
 		break;
 	case CH3_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg |= CH3_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		} else {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg &= ~CH3_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		}
+		mask = CH3_PD;
+		reg = readl(dp->reg_base + phy_pd_addr);
+
+		if (enable)
+			reg |= mask;
+		else
+			reg &= ~mask;
+		writel(reg, dp->reg_base + phy_pd_addr);
 		break;
 	case ANALOG_TOTAL:
-		if (enable) {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg |= DP_PHY_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		} else {
-			reg = readl(dp->reg_base + phy_pd_addr);
-			reg &= ~DP_PHY_PD;
-			writel(reg, dp->reg_base + phy_pd_addr);
-		}
+		/*
+		 * There is no bit named DP_PHY_PD, so We used DP_INC_BG
+		 * to power off everything instead of DP_PHY_PD in
+		 * Rockchip
+		 */
+		if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+			mask = DP_INC_BG;
+		else
+			mask = DP_PHY_PD;
+
+		reg = readl(dp->reg_base + phy_pd_addr);
+		if (enable)
+			reg |= mask;
+		else
+			reg &= ~mask;
+
+		writel(reg, dp->reg_base + phy_pd_addr);
+		if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
+			usleep_range(10, 15);
 		break;
 	case POWER_ALL:
 		if (enable) {
-			reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD |
-				CH1_PD | CH0_PD;
+			reg = DP_ALL_PD;
 			writel(reg, dp->reg_base + phy_pd_addr);
 		} else {
+			reg = DP_ALL_PD;
+			writel(reg, dp->reg_base + phy_pd_addr);
+			usleep_range(10, 15);
+			reg &= ~DP_INC_BG;
+			writel(reg, dp->reg_base + phy_pd_addr);
+			usleep_range(10, 15);
+
 			writel(0x00, dp->reg_base + phy_pd_addr);
 		}
 		break;
@@ -333,7 +357,7 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
 	}
 }
 
-void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
+int analogix_dp_init_analog_func(struct analogix_dp_device *dp)
 {
 	u32 reg;
 	int timeout_loop = 0;
@@ -355,7 +379,7 @@ void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
 			timeout_loop++;
 			if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
 				dev_err(dp->dev, "failed to get pll lock status\n");
-				return;
+				return -ETIMEDOUT;
 			}
 			usleep_range(10, 20);
 		}
@@ -366,6 +390,7 @@ void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
 	reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
 		| AUX_FUNC_EN_N);
 	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	return 0;
 }
 
 void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp)
@@ -450,17 +475,22 @@ void analogix_dp_init_aux(struct analogix_dp_device *dp)
 	reg = RPLY_RECEIV | AUX_ERR;
 	writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA);
 
+	analogix_dp_set_analog_power_down(dp, AUX_BLOCK, true);
+	usleep_range(10, 11);
+	analogix_dp_set_analog_power_down(dp, AUX_BLOCK, false);
+
 	analogix_dp_reset_aux(dp);
 
-	/* Disable AUX transaction H/W retry */
+	/* AUX_BIT_PERIOD_EXPECTED_DELAY doesn't apply to Rockchip IP */
 	if (dp->plat_data && is_rockchip(dp->plat_data->dev_type))
-		reg = AUX_BIT_PERIOD_EXPECTED_DELAY(0) |
-		      AUX_HW_RETRY_COUNT_SEL(3) |
-		      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+		reg = 0;
 	else
-		reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) |
-		      AUX_HW_RETRY_COUNT_SEL(0) |
-		      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+		reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3);
+
+	/* Disable AUX transaction H/W retry */
+	reg |= AUX_HW_RETRY_COUNT_SEL(0) |
+	       AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+
 	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_HW_RETRY_CTL);
 
 	/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
@@ -947,8 +977,12 @@ void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp)
 	u32 reg;
 
 	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
-	reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
-	reg |= MASTER_VID_FUNC_EN_N;
+	if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
+		reg &= ~(RK_VID_CAP_FUNC_EN_N | RK_VID_FIFO_FUNC_EN_N);
+	} else {
+		reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
+		reg |= MASTER_VID_FUNC_EN_N;
+	}
 	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
 
 	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
@@ -1072,10 +1106,11 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
 			     struct drm_dp_aux_msg *msg)
 {
 	u32 reg;
+	u32 status_reg;
 	u8 *buffer = msg->buffer;
-	int timeout_loop = 0;
 	unsigned int i;
 	int num_transferred = 0;
+	int ret;
 
 	/* Buffer size of AUX CH is 16 bytes */
 	if (WARN_ON(msg->size > 16))
@@ -1139,17 +1174,20 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
 
 	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
 
-	/* Is AUX CH command reply received? */
+	ret = readx_poll_timeout(readl, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2,
+				 reg, !(reg & AUX_EN), 25, 500 * 1000);
+	if (ret) {
+		dev_err(dp->dev, "AUX CH enable timeout!\n");
+		goto aux_error;
+	}
+
 	/* TODO: Wait for an interrupt instead of looping? */
-	reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
-	while (!(reg & RPLY_RECEIV)) {
-		timeout_loop++;
-		if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
-			dev_err(dp->dev, "AUX CH command reply failed!\n");
-			return -ETIMEDOUT;
-		}
-		reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
-		usleep_range(10, 11);
+	/* Is AUX CH command reply received? */
+	ret = readx_poll_timeout(readl, dp->reg_base + ANALOGIX_DP_INT_STA,
+				 reg, reg & RPLY_RECEIV, 10, 20 * 1000);
+	if (ret) {
+		dev_err(dp->dev, "AUX CH cmd reply timeout!\n");
+		goto aux_error;
 	}
 
 	/* Clear interrupt source for AUX CH command reply */
@@ -1157,17 +1195,13 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
 
 	/* Clear interrupt source for AUX CH access error */
 	reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
-	if (reg & AUX_ERR) {
+	status_reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
+	if ((reg & AUX_ERR) || (status_reg & AUX_STATUS_MASK)) {
 		writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
-		return -EREMOTEIO;
-	}
 
-	/* Check AUX CH error access status */
-	reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
-	if ((reg & AUX_STATUS_MASK)) {
-		dev_err(dp->dev, "AUX CH error happened: %d\n\n",
-			reg & AUX_STATUS_MASK);
-		return -EREMOTEIO;
+		dev_warn(dp->dev, "AUX CH error happened: %#x (%d)\n",
+			 status_reg & AUX_STATUS_MASK, !!(reg & AUX_ERR));
+		goto aux_error;
 	}
 
 	if (msg->request & DP_AUX_I2C_READ) {
@@ -1193,4 +1227,10 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
 		msg->reply = DP_AUX_NATIVE_REPLY_ACK;
 
 	return num_transferred > 0 ? num_transferred : -EBUSY;
+
+aux_error:
+	/* if aux err happen, reset aux */
+	analogix_dp_init_aux(dp);
+
+	return -EREMOTEIO;
 }

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h

@@ -127,7 +127,9 @@
 
 /* ANALOGIX_DP_FUNC_EN_1 */
 #define MASTER_VID_FUNC_EN_N			(0x1 << 7)
+#define RK_VID_CAP_FUNC_EN_N			(0x1 << 6)
 #define SLAVE_VID_FUNC_EN_N			(0x1 << 5)
+#define RK_VID_FIFO_FUNC_EN_N			(0x1 << 5)
 #define AUD_FIFO_FUNC_EN_N			(0x1 << 4)
 #define AUD_FUNC_EN_N				(0x1 << 3)
 #define HDCP_FUNC_EN_N				(0x1 << 2)
@@ -342,12 +344,17 @@
 #define DP_PLL_REF_BIT_1_2500V			(0x7 << 0)
 
 /* ANALOGIX_DP_PHY_PD */
+#define DP_INC_BG				(0x1 << 7)
+#define DP_EXP_BG				(0x1 << 6)
 #define DP_PHY_PD				(0x1 << 5)
+#define RK_AUX_PD				(0x1 << 5)
 #define AUX_PD					(0x1 << 4)
+#define RK_PLL_PD				(0x1 << 4)
 #define CH3_PD					(0x1 << 3)
 #define CH2_PD					(0x1 << 2)
 #define CH1_PD					(0x1 << 1)
 #define CH0_PD					(0x1 << 0)
+#define DP_ALL_PD				(0xff)
 
 /* ANALOGIX_DP_PHY_TEST */
 #define MACRO_RST				(0x1 << 5)

drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c

@@ -152,7 +152,6 @@ static struct platform_driver snd_dw_hdmi_driver = {
 	.remove	= snd_dw_hdmi_remove,
 	.driver	= {
 		.name = DRIVER_NAME,
-		.owner = THIS_MODULE,
 	},
 };
 module_platform_driver(snd_dw_hdmi_driver);

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2016, Fuzhou Rockchip Electronics Co., Ltd
  * Copyright (C) STMicroelectronics SA 2017
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  * Modified by Philippe Cornu <philippe.cornu@st.com>
  * This generic Synopsys DesignWare MIPI DSI host driver is based on the
  * Rockchip version from rockchip/dw-mipi-dsi.c with phy & bridge APIs.
@@ -775,20 +771,20 @@ static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
 
 	clk_prepare_enable(dsi->pclk);
 
-	ret = phy_ops->get_lane_mbps(priv_data, mode, dsi->mode_flags,
+	ret = phy_ops->get_lane_mbps(priv_data, adjusted_mode, dsi->mode_flags,
 				     dsi->lanes, dsi->format, &dsi->lane_mbps);
 	if (ret)
 		DRM_DEBUG_DRIVER("Phy get_lane_mbps() failed\n");
 
 	pm_runtime_get_sync(dsi->dev);
 	dw_mipi_dsi_init(dsi);
-	dw_mipi_dsi_dpi_config(dsi, mode);
+	dw_mipi_dsi_dpi_config(dsi, adjusted_mode);
 	dw_mipi_dsi_packet_handler_config(dsi);
 	dw_mipi_dsi_video_mode_config(dsi);
-	dw_mipi_dsi_video_packet_config(dsi, mode);
+	dw_mipi_dsi_video_packet_config(dsi, adjusted_mode);
 	dw_mipi_dsi_command_mode_config(dsi);
-	dw_mipi_dsi_line_timer_config(dsi, mode);
-	dw_mipi_dsi_vertical_timing_config(dsi, mode);
+	dw_mipi_dsi_line_timer_config(dsi, adjusted_mode);
+	dw_mipi_dsi_vertical_timing_config(dsi, adjusted_mode);
 
 	dw_mipi_dsi_dphy_init(dsi);
 	dw_mipi_dsi_dphy_timing_config(dsi);
@@ -802,7 +798,7 @@ static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
 
 	dw_mipi_dsi_dphy_enable(dsi);
 
-	dw_mipi_dsi_wait_for_two_frames(mode);
+	dw_mipi_dsi_wait_for_two_frames(adjusted_mode);
 
 	/* Switch to cmd mode for panel-bridge pre_enable & panel prepare */
 	dw_mipi_dsi_set_mode(dsi, 0);

drivers/gpu/drm/bridge/tc358767.c

@@ -1102,7 +1102,7 @@ static bool tc_bridge_mode_fixup(struct drm_bridge *bridge,
 	return true;
 }
 
-static int tc_connector_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status tc_connector_mode_valid(struct drm_connector *connector,
 				   struct drm_display_mode *mode)
 {
 	/* DPI interface clock limitation: upto 154 MHz */

drivers/gpu/drm/bridge/thc63lvd1024.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * THC63LVD1024 LVDS to parallel data DRM bridge driver.
+ *
+ * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_panel.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/of_graph.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+enum thc63_ports {
+	THC63_LVDS_IN0,
+	THC63_LVDS_IN1,
+	THC63_RGB_OUT0,
+	THC63_RGB_OUT1,
+};
+
+struct thc63_dev {
+	struct device *dev;
+
+	struct regulator *vcc;
+
+	struct gpio_desc *pdwn;
+	struct gpio_desc *oe;
+
+	struct drm_bridge bridge;
+	struct drm_bridge *next;
+};
+
+static inline struct thc63_dev *to_thc63(struct drm_bridge *bridge)
+{
+	return container_of(bridge, struct thc63_dev, bridge);
+}
+
+static int thc63_attach(struct drm_bridge *bridge)
+{
+	struct thc63_dev *thc63 = to_thc63(bridge);
+
+	return drm_bridge_attach(bridge->encoder, thc63->next, bridge);
+}
+
+static void thc63_enable(struct drm_bridge *bridge)
+{
+	struct thc63_dev *thc63 = to_thc63(bridge);
+	int ret;
+
+	ret = regulator_enable(thc63->vcc);
+	if (ret) {
+		dev_err(thc63->dev,
+			"Failed to enable regulator \"vcc\": %d\n", ret);
+		return;
+	}
+
+	gpiod_set_value(thc63->pdwn, 0);
+	gpiod_set_value(thc63->oe, 1);
+}
+
+static void thc63_disable(struct drm_bridge *bridge)
+{
+	struct thc63_dev *thc63 = to_thc63(bridge);
+	int ret;
+
+	gpiod_set_value(thc63->oe, 0);
+	gpiod_set_value(thc63->pdwn, 1);
+
+	ret = regulator_disable(thc63->vcc);
+	if (ret)
+		dev_err(thc63->dev,
+			"Failed to disable regulator \"vcc\": %d\n", ret);
+}
+
+static const struct drm_bridge_funcs thc63_bridge_func = {
+	.attach	= thc63_attach,
+	.enable = thc63_enable,
+	.disable = thc63_disable,
+};
+
+static int thc63_parse_dt(struct thc63_dev *thc63)
+{
+	struct device_node *thc63_out;
+	struct device_node *remote;
+
+	thc63_out = of_graph_get_endpoint_by_regs(thc63->dev->of_node,
+						  THC63_RGB_OUT0, -1);
+	if (!thc63_out) {
+		dev_err(thc63->dev, "Missing endpoint in port@%u\n",
+			THC63_RGB_OUT0);
+		return -ENODEV;
+	}
+
+	remote = of_graph_get_remote_port_parent(thc63_out);
+	of_node_put(thc63_out);
+	if (!remote) {
+		dev_err(thc63->dev, "Endpoint in port@%u unconnected\n",
+			THC63_RGB_OUT0);
+		return -ENODEV;
+	}
+
+	if (!of_device_is_available(remote)) {
+		dev_err(thc63->dev, "port@%u remote endpoint is disabled\n",
+			THC63_RGB_OUT0);
+		of_node_put(remote);
+		return -ENODEV;
+	}
+
+	thc63->next = of_drm_find_bridge(remote);
+	of_node_put(remote);
+	if (!thc63->next)
+		return -EPROBE_DEFER;
+
+	return 0;
+}
+
+static int thc63_gpio_init(struct thc63_dev *thc63)
+{
+	thc63->oe = devm_gpiod_get_optional(thc63->dev, "oe", GPIOD_OUT_LOW);
+	if (IS_ERR(thc63->oe)) {
+		dev_err(thc63->dev, "Unable to get \"oe-gpios\": %ld\n",
+			PTR_ERR(thc63->oe));
+		return PTR_ERR(thc63->oe);
+	}
+
+	thc63->pdwn = devm_gpiod_get_optional(thc63->dev, "powerdown",
+					      GPIOD_OUT_HIGH);
+	if (IS_ERR(thc63->pdwn)) {
+		dev_err(thc63->dev, "Unable to get \"powerdown-gpios\": %ld\n",
+			PTR_ERR(thc63->pdwn));
+		return PTR_ERR(thc63->pdwn);
+	}
+
+	return 0;
+}
+
+static int thc63_probe(struct platform_device *pdev)
+{
+	struct thc63_dev *thc63;
+	int ret;
+
+	thc63 = devm_kzalloc(&pdev->dev, sizeof(*thc63), GFP_KERNEL);
+	if (!thc63)
+		return -ENOMEM;
+
+	thc63->dev = &pdev->dev;
+	platform_set_drvdata(pdev, thc63);
+
+	thc63->vcc = devm_regulator_get_optional(thc63->dev, "vcc");
+	if (IS_ERR(thc63->vcc)) {
+		if (PTR_ERR(thc63->vcc) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dev_err(thc63->dev, "Unable to get \"vcc\" supply: %ld\n",
+			PTR_ERR(thc63->vcc));
+		return PTR_ERR(thc63->vcc);
+	}
+
+	ret = thc63_gpio_init(thc63);
+	if (ret)
+		return ret;
+
+	ret = thc63_parse_dt(thc63);
+	if (ret)
+		return ret;
+
+	thc63->bridge.driver_private = thc63;
+	thc63->bridge.of_node = pdev->dev.of_node;
+	thc63->bridge.funcs = &thc63_bridge_func;
+
+	drm_bridge_add(&thc63->bridge);
+
+	return 0;
+}
+
+static int thc63_remove(struct platform_device *pdev)
+{
+	struct thc63_dev *thc63 = platform_get_drvdata(pdev);
+
+	drm_bridge_remove(&thc63->bridge);
+
+	return 0;
+}
+
+static const struct of_device_id thc63_match[] = {
+	{ .compatible = "thine,thc63lvd1024", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, thc63_match);
+
+static struct platform_driver thc63_driver = {
+	.probe	= thc63_probe,
+	.remove	= thc63_remove,
+	.driver	= {
+		.name		= "thc63lvd1024",
+		.of_match_table	= thc63_match,
+	},
+};
+module_platform_driver(thc63_driver);
+
+MODULE_AUTHOR("Jacopo Mondi <jacopo@jmondi.org>");
+MODULE_DESCRIPTION("Thine THC63LVD1024 LVDS decoder DRM bridge driver");
+MODULE_LICENSE("GPL v2");

drivers/gpu/drm/drm_atomic.c

@@ -783,6 +783,8 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
 		state->src_w = val;
 	} else if (property == config->prop_src_h) {
 		state->src_h = val;
+	} else if (property == plane->alpha_property) {
+		state->alpha = val;
 	} else if (property == plane->rotation_property) {
 		if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK))
 			return -EINVAL;
@@ -848,6 +850,8 @@ drm_atomic_plane_get_property(struct drm_plane *plane,
 		*val = state->src_w;
 	} else if (property == config->prop_src_h) {
 		*val = state->src_h;
+	} else if (property == plane->alpha_property) {
+		*val = state->alpha;
 	} else if (property == plane->rotation_property) {
 		*val = state->rotation;
 	} else if (property == plane->zpos_property) {
@@ -1492,6 +1496,14 @@ EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
  * Otherwise, if &drm_plane_state.fence is not set this function we just set it
  * with the received implicit fence. In both cases this function consumes a
  * reference for @fence.
+ *
+ * This way explicit fencing can be used to overrule implicit fencing, which is
+ * important to make explicit fencing use-cases work: One example is using one
+ * buffer for 2 screens with different refresh rates. Implicit fencing will
+ * clamp rendering to the refresh rate of the slower screen, whereas explicit
+ * fence allows 2 independent render and display loops on a single buffer. If a
+ * driver allows obeys both implicit and explicit fences for plane updates, then
+ * it will break all the benefits of explicit fencing.
  */
 void
 drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,

drivers/gpu/drm/drm_atomic_helper.c

@@ -875,6 +875,11 @@ EXPORT_SYMBOL(drm_atomic_helper_check_planes);
  * functions depend upon an updated adjusted_mode.clock to e.g. properly compute
  * watermarks.
  *
+ * Note that zpos normalization will add all enable planes to the state which
+ * might not desired for some drivers.
+ * For example enable/disable of a cursor plane which have fixed zpos value
+ * would trigger all other enabled planes to be forced to the state change.
+ *
  * RETURNS:
  * Zero for success or -errno
  */
@@ -887,6 +892,12 @@ int drm_atomic_helper_check(struct drm_device *dev,
 	if (ret)
 		return ret;
 
+	if (dev->mode_config.normalize_zpos) {
+		ret = drm_atomic_normalize_zpos(dev, state);
+		if (ret)
+			return ret;
+	}
+
 	ret = drm_atomic_helper_check_planes(dev, state);
 	if (ret)
 		return ret;
@@ -1561,6 +1572,17 @@ void drm_atomic_helper_async_commit(struct drm_device *dev,
 	for_each_new_plane_in_state(state, plane, plane_state, i) {
 		funcs = plane->helper_private;
 		funcs->atomic_async_update(plane, plane_state);
+
+		/*
+		 * ->atomic_async_update() is supposed to update the
+		 * plane->state in-place, make sure at least common
+		 * properties have been properly updated.
+		 */
+		WARN_ON_ONCE(plane->state->fb != plane_state->fb);
+		WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x);
+		WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y);
+		WARN_ON_ONCE(plane->state->src_x != plane_state->src_x);
+		WARN_ON_ONCE(plane->state->src_y != plane_state->src_y);
 	}
 }
 EXPORT_SYMBOL(drm_atomic_helper_async_commit);
@@ -2659,7 +2681,7 @@ int drm_atomic_helper_disable_plane(struct drm_plane *plane,
 		goto fail;
 	}
 
-	if (plane_state->crtc && (plane == plane->crtc->cursor))
+	if (plane_state->crtc && plane_state->crtc->cursor == plane)
 		plane_state->state->legacy_cursor_update = true;
 
 	ret = __drm_atomic_helper_disable_plane(plane, plane_state);
@@ -2881,31 +2903,9 @@ int __drm_atomic_helper_set_config(struct drm_mode_set *set,
 	return 0;
 }
 
-/**
- * drm_atomic_helper_disable_all - disable all currently active outputs
- * @dev: DRM device
- * @ctx: lock acquisition context
- *
- * Loops through all connectors, finding those that aren't turned off and then
- * turns them off by setting their DPMS mode to OFF and deactivating the CRTC
- * that they are connected to.
- *
- * This is used for example in suspend/resume to disable all currently active
- * functions when suspending. If you just want to shut down everything at e.g.
- * driver unload, look at drm_atomic_helper_shutdown().
- *
- * Note that if callers haven't already acquired all modeset locks this might
- * return -EDEADLK, which must be handled by calling drm_modeset_backoff().
- *
- * Returns:
- * 0 on success or a negative error code on failure.
- *
- * See also:
- * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and
- * drm_atomic_helper_shutdown().
- */
-int drm_atomic_helper_disable_all(struct drm_device *dev,
-				  struct drm_modeset_acquire_ctx *ctx)
+static int __drm_atomic_helper_disable_all(struct drm_device *dev,
+					   struct drm_modeset_acquire_ctx *ctx,
+					   bool clean_old_fbs)
 {
 	struct drm_atomic_state *state;
 	struct drm_connector_state *conn_state;
@@ -2957,8 +2957,11 @@ int drm_atomic_helper_disable_all(struct drm_device *dev,
 			goto free;
 
 		drm_atomic_set_fb_for_plane(plane_state, NULL);
-		plane_mask |= BIT(drm_plane_index(plane));
-		plane->old_fb = plane->fb;
+
+		if (clean_old_fbs) {
+			plane->old_fb = plane->fb;
+			plane_mask |= BIT(drm_plane_index(plane));
+		}
 	}
 
 	ret = drm_atomic_commit(state);
@@ -2969,6 +2972,34 @@ int drm_atomic_helper_disable_all(struct drm_device *dev,
 	return ret;
 }
 
+/**
+ * drm_atomic_helper_disable_all - disable all currently active outputs
+ * @dev: DRM device
+ * @ctx: lock acquisition context
+ *
+ * Loops through all connectors, finding those that aren't turned off and then
+ * turns them off by setting their DPMS mode to OFF and deactivating the CRTC
+ * that they are connected to.
+ *
+ * This is used for example in suspend/resume to disable all currently active
+ * functions when suspending. If you just want to shut down everything at e.g.
+ * driver unload, look at drm_atomic_helper_shutdown().
+ *
+ * Note that if callers haven't already acquired all modeset locks this might
+ * return -EDEADLK, which must be handled by calling drm_modeset_backoff().
+ *
+ * Returns:
+ * 0 on success or a negative error code on failure.
+ *
+ * See also:
+ * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and
+ * drm_atomic_helper_shutdown().
+ */
+int drm_atomic_helper_disable_all(struct drm_device *dev,
+				  struct drm_modeset_acquire_ctx *ctx)
+{
+	return __drm_atomic_helper_disable_all(dev, ctx, false);
+}
 EXPORT_SYMBOL(drm_atomic_helper_disable_all);
 
 /**
@@ -2991,7 +3022,7 @@ void drm_atomic_helper_shutdown(struct drm_device *dev)
 	while (1) {
 		ret = drm_modeset_lock_all_ctx(dev, &ctx);
 		if (!ret)
-			ret = drm_atomic_helper_disable_all(dev, &ctx);
+			ret = __drm_atomic_helper_disable_all(dev, &ctx, true);
 
 		if (ret != -EDEADLK)
 			break;
@@ -3095,14 +3126,14 @@ int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 	struct drm_connector_state *new_conn_state;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *new_crtc_state;
-	unsigned plane_mask = 0;
-	struct drm_device *dev = state->dev;
-	int ret;
 
 	state->acquire_ctx = ctx;
 
 	for_each_new_plane_in_state(state, plane, new_plane_state, i) {
-		plane_mask |= BIT(drm_plane_index(plane));
+		WARN_ON(plane->crtc != new_plane_state->crtc);
+		WARN_ON(plane->fb != new_plane_state->fb);
+		WARN_ON(plane->old_fb);
+
 		state->planes[i].old_state = plane->state;
 	}
 
@@ -3112,11 +3143,7 @@ int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 	for_each_new_connector_in_state(state, connector, new_conn_state, i)
 		state->connectors[i].old_state = connector->state;
 
-	ret = drm_atomic_commit(state);
-	if (plane_mask)
-		drm_atomic_clean_old_fb(dev, plane_mask, ret);
-
-	return ret;
+	return drm_atomic_commit(state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state);
 
@@ -3484,6 +3511,10 @@ void drm_atomic_helper_plane_reset(struct drm_plane *plane)
 	if (plane->state) {
 		plane->state->plane = plane;
 		plane->state->rotation = DRM_MODE_ROTATE_0;
+
+		/* Reset the alpha value to fully opaque if it matters */
+		if (plane->alpha_property)
+			plane->state->alpha = plane->alpha_property->values[1];
 	}
 }
 EXPORT_SYMBOL(drm_atomic_helper_plane_reset);

drivers/gpu/drm/drm_blend.c

@@ -88,6 +88,13 @@
  * On top of this basic transformation additional properties can be exposed by
  * the driver:
  *
+ * alpha:
+ * 	Alpha is setup with drm_plane_create_alpha_property(). It controls the
+ * 	plane-wide opacity, from transparent (0) to opaque (0xffff). It can be
+ * 	combined with pixel alpha.
+ *	The pixel values in the framebuffers are expected to not be
+ *	pre-multiplied by the global alpha associated to the plane.
+ *
  * rotation:
  *	Rotation is set up with drm_plane_create_rotation_property(). It adds a
  *	rotation and reflection step between the source and destination rectangles.
@@ -105,6 +112,38 @@
  * exposed and assumed to be black).
  */
 
+/**
+ * drm_plane_create_alpha_property - create a new alpha property
+ * @plane: drm plane
+ *
+ * This function creates a generic, mutable, alpha property and enables support
+ * for it in the DRM core. It is attached to @plane.
+ *
+ * The alpha property will be allowed to be within the bounds of 0
+ * (transparent) to 0xffff (opaque).
+ *
+ * Returns:
+ * 0 on success, negative error code on failure.
+ */
+int drm_plane_create_alpha_property(struct drm_plane *plane)
+{
+	struct drm_property *prop;
+
+	prop = drm_property_create_range(plane->dev, 0, "alpha",
+					 0, DRM_BLEND_ALPHA_OPAQUE);
+	if (!prop)
+		return -ENOMEM;
+
+	drm_object_attach_property(&plane->base, prop, DRM_BLEND_ALPHA_OPAQUE);
+	plane->alpha_property = prop;
+
+	if (plane->state)
+		plane->state->alpha = DRM_BLEND_ALPHA_OPAQUE;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_alpha_property);
+
 /**
  * drm_plane_create_rotation_property - create a new rotation property
  * @plane: drm plane

drivers/gpu/drm/drm_crtc.c

@@ -402,6 +402,7 @@ int drm_mode_getcrtc(struct drm_device *dev,
 {
 	struct drm_mode_crtc *crtc_resp = data;
 	struct drm_crtc *crtc;
+	struct drm_plane *plane;
 
 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return -EINVAL;
@@ -410,34 +411,36 @@ int drm_mode_getcrtc(struct drm_device *dev,
 	if (!crtc)
 		return -ENOENT;
 
+	plane = crtc->primary;
+
 	crtc_resp->gamma_size = crtc->gamma_size;
 
-	drm_modeset_lock(&crtc->primary->mutex, NULL);
-	if (crtc->primary->state && crtc->primary->state->fb)
-		crtc_resp->fb_id = crtc->primary->state->fb->base.id;
-	else if (!crtc->primary->state && crtc->primary->fb)
-		crtc_resp->fb_id = crtc->primary->fb->base.id;
+	drm_modeset_lock(&plane->mutex, NULL);
+	if (plane->state && plane->state->fb)
+		crtc_resp->fb_id = plane->state->fb->base.id;
+	else if (!plane->state && plane->fb)
+		crtc_resp->fb_id = plane->fb->base.id;
 	else
 		crtc_resp->fb_id = 0;
 
-	if (crtc->primary->state) {
-		crtc_resp->x = crtc->primary->state->src_x >> 16;
-		crtc_resp->y = crtc->primary->state->src_y >> 16;
+	if (plane->state) {
+		crtc_resp->x = plane->state->src_x >> 16;
+		crtc_resp->y = plane->state->src_y >> 16;
 	}
-	drm_modeset_unlock(&crtc->primary->mutex);
+	drm_modeset_unlock(&plane->mutex);
 
 	drm_modeset_lock(&crtc->mutex, NULL);
 	if (crtc->state) {
 		if (crtc->state->enable) {
 			drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
 			crtc_resp->mode_valid = 1;
-
 		} else {
 			crtc_resp->mode_valid = 0;
 		}
 	} else {
 		crtc_resp->x = crtc->x;
 		crtc_resp->y = crtc->y;
+
 		if (crtc->enabled) {
 			drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
 			crtc_resp->mode_valid = 1;
@@ -471,7 +474,7 @@ static int __drm_mode_set_config_internal(struct drm_mode_set *set,
 
 	ret = crtc->funcs->set_config(set, ctx);
 	if (ret == 0) {
-		crtc->primary->crtc = crtc;
+		crtc->primary->crtc = fb ? crtc : NULL;
 		crtc->primary->fb = fb;
 	}
 
@@ -554,6 +557,7 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 	struct drm_mode_config *config = &dev->mode_config;
 	struct drm_mode_crtc *crtc_req = data;
 	struct drm_crtc *crtc;
+	struct drm_plane *plane;
 	struct drm_connector **connector_set = NULL, *connector;
 	struct drm_framebuffer *fb = NULL;
 	struct drm_display_mode *mode = NULL;
@@ -580,22 +584,33 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 	}
 	DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
 
+	plane = crtc->primary;
+
 	mutex_lock(&crtc->dev->mode_config.mutex);
 	drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
 retry:
 	ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx);
 	if (ret)
 		goto out;
+
 	if (crtc_req->mode_valid) {
 		/* If we have a mode we need a framebuffer. */
 		/* If we pass -1, set the mode with the currently bound fb */
 		if (crtc_req->fb_id == -1) {
-			if (!crtc->primary->fb) {
+			struct drm_framebuffer *old_fb;
+
+			if (plane->state)
+				old_fb = plane->state->fb;
+			else
+				old_fb = plane->fb;
+
+			if (!old_fb) {
 				DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
 				ret = -EINVAL;
 				goto out;
 			}
-			fb = crtc->primary->fb;
+
+			fb = old_fb;
 			/* Make refcounting symmetric with the lookup path. */
 			drm_framebuffer_get(fb);
 		} else {
@@ -627,8 +642,8 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
 		 * match real hardware capabilities. Skip the check in that
 		 * case.
 		 */
-		if (!crtc->primary->format_default) {
-			ret = drm_plane_check_pixel_format(crtc->primary,
+		if (!plane->format_default) {
+			ret = drm_plane_check_pixel_format(plane,
 							   fb->format->format,
 							   fb->modifier);
 			if (ret) {

drivers/gpu/drm/drm_crtc_internal.h

@@ -220,3 +220,5 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 
 /* drm_edid.c */
 void drm_mode_fixup_1366x768(struct drm_display_mode *mode);
+void drm_reset_display_info(struct drm_connector *connector);
+u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid);

drivers/gpu/drm/drm_dp_mst_topology.c

@@ -2941,12 +2941,14 @@ static void drm_dp_mst_dump_mstb(struct seq_file *m,
 	}
 }
 
+#define DP_PAYLOAD_TABLE_SIZE		64
+
 static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr,
 				  char *buf)
 {
 	int i;
 
-	for (i = 0; i < 64; i += 16) {
+	for (i = 0; i < DP_PAYLOAD_TABLE_SIZE; i += 16) {
 		if (drm_dp_dpcd_read(mgr->aux,
 				     DP_PAYLOAD_TABLE_UPDATE_STATUS + i,
 				     &buf[i], 16) != 16)
@@ -3015,7 +3017,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
 
 	mutex_lock(&mgr->lock);
 	if (mgr->mst_primary) {
-		u8 buf[64];
+		u8 buf[DP_PAYLOAD_TABLE_SIZE];
 		int ret;
 
 		ret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE);
@@ -3033,8 +3035,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
 		seq_printf(m, " revision: hw: %x.%x sw: %x.%x\n",
 			   buf[0x9] >> 4, buf[0x9] & 0xf, buf[0xa], buf[0xb]);
 		if (dump_dp_payload_table(mgr, buf))
-			seq_printf(m, "payload table: %*ph\n", 63, buf);
-
+			seq_printf(m, "payload table: %*ph\n", DP_PAYLOAD_TABLE_SIZE, buf);
 	}
 
 	mutex_unlock(&mgr->lock);

drivers/gpu/drm/drm_drv.c

@@ -32,6 +32,7 @@
 #include <linux/moduleparam.h>
 #include <linux/mount.h>
 #include <linux/slab.h>
+#include <linux/srcu.h>
 
 #include <drm/drm_drv.h>
 #include <drm/drmP.h>
@@ -75,6 +76,8 @@ static bool drm_core_init_complete = false;
 
 static struct dentry *drm_debugfs_root;
 
+DEFINE_STATIC_SRCU(drm_unplug_srcu);
+
 /*
  * DRM Minors
  * A DRM device can provide several char-dev interfaces on the DRM-Major. Each
@@ -318,18 +321,51 @@ void drm_put_dev(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_put_dev);
 
-static void drm_device_set_unplugged(struct drm_device *dev)
+/**
+ * drm_dev_enter - Enter device critical section
+ * @dev: DRM device
+ * @idx: Pointer to index that will be passed to the matching drm_dev_exit()
+ *
+ * This function marks and protects the beginning of a section that should not
+ * be entered after the device has been unplugged. The section end is marked
+ * with drm_dev_exit(). Calls to this function can be nested.
+ *
+ * Returns:
+ * True if it is OK to enter the section, false otherwise.
+ */
+bool drm_dev_enter(struct drm_device *dev, int *idx)
+{
+	*idx = srcu_read_lock(&drm_unplug_srcu);
+
+	if (dev->unplugged) {
+		srcu_read_unlock(&drm_unplug_srcu, *idx);
+		return false;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(drm_dev_enter);
+
+/**
+ * drm_dev_exit - Exit device critical section
+ * @idx: index returned from drm_dev_enter()
+ *
+ * This function marks the end of a section that should not be entered after
+ * the device has been unplugged.
+ */
+void drm_dev_exit(int idx)
 {
-	smp_wmb();
-	atomic_set(&dev->unplugged, 1);
+	srcu_read_unlock(&drm_unplug_srcu, idx);
 }
+EXPORT_SYMBOL(drm_dev_exit);
 
 /**
  * drm_dev_unplug - unplug a DRM device
  * @dev: DRM device
  *
  * This unplugs a hotpluggable DRM device, which makes it inaccessible to
- * userspace operations. Entry-points can use drm_dev_is_unplugged(). This
+ * userspace operations. Entry-points can use drm_dev_enter() and
+ * drm_dev_exit() to protect device resources in a race free manner. This
  * essentially unregisters the device like drm_dev_unregister(), but can be
  * called while there are still open users of @dev.
  */
@@ -338,10 +374,18 @@ void drm_dev_unplug(struct drm_device *dev)
 	drm_dev_unregister(dev);
 
 	mutex_lock(&drm_global_mutex);
-	drm_device_set_unplugged(dev);
 	if (dev->open_count == 0)
 		drm_dev_put(dev);
 	mutex_unlock(&drm_global_mutex);
+
+	/*
+	 * After synchronizing any critical read section is guaranteed to see
+	 * the new value of ->unplugged, and any critical section which might
+	 * still have seen the old value of ->unplugged is guaranteed to have
+	 * finished.
+	 */
+	dev->unplugged = true;
+	synchronize_srcu(&drm_unplug_srcu);
 }
 EXPORT_SYMBOL(drm_dev_unplug);
 

drivers/gpu/drm/drm_edid.c

@@ -4455,7 +4455,6 @@ drm_reset_display_info(struct drm_connector *connector)
 
 	info->non_desktop = 0;
 }
-EXPORT_SYMBOL_GPL(drm_reset_display_info);
 
 u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid)
 {
@@ -4533,7 +4532,6 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
 		info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
 	return quirks;
 }
-EXPORT_SYMBOL_GPL(drm_add_display_info);
 
 static int validate_displayid(u8 *displayid, int length, int idx)
 {

drivers/gpu/drm/drm_framebuffer.c

@@ -468,29 +468,31 @@ int drm_mode_getfb(struct drm_device *dev,
 		goto out;
 	}
 
+	if (!fb->funcs->create_handle) {
+		ret = -ENODEV;
+		goto out;
+	}
+
 	r->height = fb->height;
 	r->width = fb->width;
 	r->depth = fb->format->depth;
 	r->bpp = fb->format->cpp[0] * 8;
 	r->pitch = fb->pitches[0];
-	if (fb->funcs->create_handle) {
-		if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
-		    drm_is_control_client(file_priv)) {
-			ret = fb->funcs->create_handle(fb, file_priv,
-						       &r->handle);
-		} else {
-			/* GET_FB() is an unprivileged ioctl so we must not
-			 * return a buffer-handle to non-master processes! For
-			 * backwards-compatibility reasons, we cannot make
-			 * GET_FB() privileged, so just return an invalid handle
-			 * for non-masters. */
-			r->handle = 0;
-			ret = 0;
-		}
-	} else {
-		ret = -ENODEV;
+
+	/* GET_FB() is an unprivileged ioctl so we must not return a
+	 * buffer-handle to non-master processes! For
+	 * backwards-compatibility reasons, we cannot make GET_FB() privileged,
+	 * so just return an invalid handle for non-masters.
+	 */
+	if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN) &&
+	    !drm_is_control_client(file_priv)) {
+		r->handle = 0;
+		ret = 0;
+		goto out;
 	}
 
+	ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
+
 out:
 	drm_framebuffer_put(fb);
 

drivers/gpu/drm/drm_gem.c

@@ -436,9 +436,12 @@ drm_gem_handle_create_tail(struct drm_file *file_priv,
  * @obj: object to register
  * @handlep: pionter to return the created handle to the caller
  *
- * Create a handle for this object. This adds a handle reference
- * to the object, which includes a regular reference count. Callers
- * will likely want to dereference the object afterwards.
+ * Create a handle for this object. This adds a handle reference to the object,
+ * which includes a regular reference count. Callers will likely want to
+ * dereference the object afterwards.
+ *
+ * Since this publishes @obj to userspace it must be fully set up by this point,
+ * drivers must call this last in their buffer object creation callbacks.
  */
 int drm_gem_handle_create(struct drm_file *file_priv,
 			  struct drm_gem_object *obj,

drivers/gpu/drm/drm_gem_framebuffer_helper.c

@@ -22,6 +22,7 @@
 #include <drm/drm_gem.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_modeset_helper.h>
+#include <drm/drm_simple_kms_helper.h>
 
 /**
  * DOC: overview
@@ -265,6 +266,24 @@ int drm_gem_fb_prepare_fb(struct drm_plane *plane,
 }
 EXPORT_SYMBOL_GPL(drm_gem_fb_prepare_fb);
 
+/**
+ * drm_gem_fb_simple_display_pipe_prepare_fb - prepare_fb helper for
+ *     &drm_simple_display_pipe
+ * @pipe: Simple display pipe
+ * @plane_state: Plane state
+ *
+ * This function uses drm_gem_fb_prepare_fb() to check if the plane FB has a
+ * &dma_buf attached, extracts the exclusive fence and attaches it to plane
+ * state for the atomic helper to wait on. Drivers can use this as their
+ * &drm_simple_display_pipe_funcs.prepare_fb callback.
+ */
+int drm_gem_fb_simple_display_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
+					      struct drm_plane_state *plane_state)
+{
+	return drm_gem_fb_prepare_fb(&pipe->plane, plane_state);
+}
+EXPORT_SYMBOL(drm_gem_fb_simple_display_pipe_prepare_fb);
+
 /**
  * drm_gem_fbdev_fb_create - Create a GEM backed &drm_framebuffer for fbdev
  *                           emulation

drivers/gpu/drm/drm_lease.c

@@ -340,7 +340,7 @@ static void _drm_lease_revoke(struct drm_master *top)
 				break;
 
 			/* Over */
-			master = list_entry(master->lessee_list.next, struct drm_master, lessee_list);
+			master = list_next_entry(master, lessee_list);
 		}
 	}
 }

drivers/gpu/drm/drm_panel_orientation_quirks.c

@@ -60,7 +60,7 @@ static const struct drm_dmi_panel_orientation_data itworks_tw891 = {
 	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 };
 
-static const struct drm_dmi_panel_orientation_data vios_lth17 = {
+static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = {
 	.width = 800,
 	.height = 1280,
 	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
@@ -102,12 +102,30 @@ static const struct dmi_system_id orientation_data[] = {
 		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
 		},
 		.driver_data = (void *)&itworks_tw891,
+	}, {	/*
+		 * Lenovo Ideapad Miix 310 laptop, only some production batches
+		 * have a portrait screen, the resolution checks makes the quirk
+		 * apply only to those batches.
+		 */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
+		},
+		.driver_data = (void *)&lcd800x1280_rightside_up,
+	}, {	/* Lenovo Ideapad Miix 320 */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
+		},
+		.driver_data = (void *)&lcd800x1280_rightside_up,
 	}, {	/* VIOS LTH17 */
 		.matches = {
 		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
 		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
 		},
-		.driver_data = (void *)&vios_lth17,
+		.driver_data = (void *)&lcd800x1280_rightside_up,
 	},
 	{}
 };

drivers/gpu/drm/drm_plane.c

@@ -756,6 +756,7 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 				     struct drm_modeset_acquire_ctx *ctx)
 {
 	struct drm_device *dev = crtc->dev;
+	struct drm_plane *plane = crtc->cursor;
 	struct drm_framebuffer *fb = NULL;
 	struct drm_mode_fb_cmd2 fbreq = {
 		.width = req->width,
@@ -769,8 +770,8 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 	uint32_t src_w = 0, src_h = 0;
 	int ret = 0;
 
-	BUG_ON(!crtc->cursor);
-	WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
+	BUG_ON(!plane);
+	WARN_ON(plane->crtc != crtc && plane->crtc != NULL);
 
 	/*
 	 * Obtain fb we'll be using (either new or existing) and take an extra
@@ -784,13 +785,18 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 				DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
 				return PTR_ERR(fb);
 			}
+
 			fb->hot_x = req->hot_x;
 			fb->hot_y = req->hot_y;
 		} else {
 			fb = NULL;
 		}
 	} else {
-		fb = crtc->cursor->fb;
+		if (plane->state)
+			fb = plane->state->fb;
+		else
+			fb = plane->fb;
+
 		if (fb)
 			drm_framebuffer_get(fb);
 	}
@@ -810,7 +816,7 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
 		src_h = fb->height << 16;
 	}
 
-	ret = __setplane_internal(crtc->cursor, crtc, fb,
+	ret = __setplane_internal(plane, crtc, fb,
 				  crtc_x, crtc_y, crtc_w, crtc_h,
 				  0, 0, src_w, src_h, ctx);
 
@@ -931,7 +937,8 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 {
 	struct drm_mode_crtc_page_flip_target *page_flip = data;
 	struct drm_crtc *crtc;
-	struct drm_framebuffer *fb = NULL;
+	struct drm_plane *plane;
+	struct drm_framebuffer *fb = NULL, *old_fb;
 	struct drm_pending_vblank_event *e = NULL;
 	u32 target_vblank = page_flip->sequence;
 	struct drm_modeset_acquire_ctx ctx;
@@ -959,6 +966,8 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 	if (!crtc)
 		return -ENOENT;
 
+	plane = crtc->primary;
+
 	if (crtc->funcs->page_flip_target) {
 		u32 current_vblank;
 		int r;
@@ -1003,11 +1012,16 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 	ret = drm_modeset_lock(&crtc->mutex, &ctx);
 	if (ret)
 		goto out;
-	ret = drm_modeset_lock(&crtc->primary->mutex, &ctx);
+	ret = drm_modeset_lock(&plane->mutex, &ctx);
 	if (ret)
 		goto out;
 
-	if (crtc->primary->fb == NULL) {
+	if (plane->state)
+		old_fb = plane->state->fb;
+	else
+		old_fb = plane->fb;
+
+	if (old_fb == NULL) {
 		/* The framebuffer is currently unbound, presumably
 		 * due to a hotplug event, that userspace has not
 		 * yet discovered.
@@ -1022,8 +1036,8 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 		goto out;
 	}
 
-	if (crtc->state) {
-		const struct drm_plane_state *state = crtc->primary->state;
+	if (plane->state) {
+		const struct drm_plane_state *state = plane->state;
 
 		ret = drm_framebuffer_check_src_coords(state->src_x,
 						       state->src_y,
@@ -1031,12 +1045,13 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 						       state->src_h,
 						       fb);
 	} else {
-		ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
+		ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y,
+					      &crtc->mode, fb);
 	}
 	if (ret)
 		goto out;
 
-	if (crtc->primary->fb->format != fb->format) {
+	if (old_fb->format != fb->format) {
 		DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
 		ret = -EINVAL;
 		goto out;
@@ -1048,10 +1063,12 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 			ret = -ENOMEM;
 			goto out;
 		}
+
 		e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
 		e->event.base.length = sizeof(e->event);
 		e->event.vbl.user_data = page_flip->user_data;
 		e->event.vbl.crtc_id = crtc->base.id;
+
 		ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
 		if (ret) {
 			kfree(e);
@@ -1060,7 +1077,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 		}
 	}
 
-	crtc->primary->old_fb = crtc->primary->fb;
+	plane->old_fb = plane->fb;
 	if (crtc->funcs->page_flip_target)
 		ret = crtc->funcs->page_flip_target(crtc, fb, e,
 						    page_flip->flags,
@@ -1073,19 +1090,18 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 		if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
 			drm_event_cancel_free(dev, &e->base);
 		/* Keep the old fb, don't unref it. */
-		crtc->primary->old_fb = NULL;
+		plane->old_fb = NULL;
 	} else {
-		crtc->primary->fb = fb;
-		/* Unref only the old framebuffer. */
-		fb = NULL;
+		plane->fb = fb;
+		drm_framebuffer_get(fb);
 	}
 
 out:
 	if (fb)
 		drm_framebuffer_put(fb);
-	if (crtc->primary->old_fb)
-		drm_framebuffer_put(crtc->primary->old_fb);
-	crtc->primary->old_fb = NULL;
+	if (plane->old_fb)
+		drm_framebuffer_put(plane->old_fb);
+	plane->old_fb = NULL;
 
 	if (ret == -EDEADLK) {
 		ret = drm_modeset_backoff(&ctx);

drivers/gpu/drm/drm_prime.c

@@ -331,6 +331,9 @@ EXPORT_SYMBOL(drm_gem_map_dma_buf);
 
 /**
  * drm_gem_unmap_dma_buf - unmap_dma_buf implementation for GEM
+ * @attach: attachment to unmap buffer from
+ * @sgt: scatterlist info of the buffer to unmap
+ * @dir: direction of DMA transfer
  *
  * Not implemented. The unmap is done at drm_gem_map_detach().  This can be
  * used as the &dma_buf_ops.unmap_dma_buf callback.
@@ -429,6 +432,8 @@ EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
 
 /**
  * drm_gem_dmabuf_kmap_atomic - map_atomic implementation for GEM
+ * @dma_buf: buffer to be mapped
+ * @page_num: page number within the buffer
  *
  * Not implemented. This can be used as the &dma_buf_ops.map_atomic callback.
  */
@@ -441,6 +446,9 @@ EXPORT_SYMBOL(drm_gem_dmabuf_kmap_atomic);
 
 /**
  * drm_gem_dmabuf_kunmap_atomic - unmap_atomic implementation for GEM
+ * @dma_buf: buffer to be unmapped
+ * @page_num: page number within the buffer
+ * @addr: virtual address of the buffer
  *
  * Not implemented. This can be used as the &dma_buf_ops.unmap_atomic callback.
  */
@@ -453,6 +461,8 @@ EXPORT_SYMBOL(drm_gem_dmabuf_kunmap_atomic);
 
 /**
  * drm_gem_dmabuf_kmap - map implementation for GEM
+ * @dma_buf: buffer to be mapped
+ * @page_num: page number within the buffer
  *
  * Not implemented. This can be used as the &dma_buf_ops.map callback.
  */
@@ -464,6 +474,9 @@ EXPORT_SYMBOL(drm_gem_dmabuf_kmap);
 
 /**
  * drm_gem_dmabuf_kunmap - unmap implementation for GEM
+ * @dma_buf: buffer to be unmapped
+ * @page_num: page number within the buffer
+ * @addr: virtual address of the buffer
  *
  * Not implemented. This can be used as the &dma_buf_ops.unmap callback.
  */

drivers/gpu/drm/drm_scdc_helper.c

@@ -141,7 +141,7 @@ bool drm_scdc_get_scrambling_status(struct i2c_adapter *adapter)
 
 	ret = drm_scdc_readb(adapter, SCDC_SCRAMBLER_STATUS, &status);
 	if (ret < 0) {
-		DRM_ERROR("Failed to read scrambling status: %d\n", ret);
+		DRM_DEBUG_KMS("Failed to read scrambling status: %d\n", ret);
 		return false;
 	}
 
@@ -168,7 +168,7 @@ bool drm_scdc_set_scrambling(struct i2c_adapter *adapter, bool enable)
 
 	ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
 	if (ret < 0) {
-		DRM_ERROR("Failed to read TMDS config: %d\n", ret);
+		DRM_DEBUG_KMS("Failed to read TMDS config: %d\n", ret);
 		return false;
 	}
 
@@ -179,7 +179,7 @@ bool drm_scdc_set_scrambling(struct i2c_adapter *adapter, bool enable)
 
 	ret = drm_scdc_writeb(adapter, SCDC_TMDS_CONFIG, config);
 	if (ret < 0) {
-		DRM_ERROR("Failed to enable scrambling: %d\n", ret);
+		DRM_DEBUG_KMS("Failed to enable scrambling: %d\n", ret);
 		return false;
 	}
 
@@ -223,7 +223,7 @@ bool drm_scdc_set_high_tmds_clock_ratio(struct i2c_adapter *adapter, bool set)
 
 	ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
 	if (ret < 0) {
-		DRM_ERROR("Failed to read TMDS config: %d\n", ret);
+		DRM_DEBUG_KMS("Failed to read TMDS config: %d\n", ret);
 		return false;
 	}
 
@@ -234,7 +234,7 @@ bool drm_scdc_set_high_tmds_clock_ratio(struct i2c_adapter *adapter, bool set)
 
 	ret = drm_scdc_writeb(adapter, SCDC_TMDS_CONFIG, config);
 	if (ret < 0) {
-		DRM_ERROR("Failed to set TMDS clock ratio: %d\n", ret);
+		DRM_DEBUG_KMS("Failed to set TMDS clock ratio: %d\n", ret);
 		return false;
 	}
 

drivers/gpu/drm/drm_simple_kms_helper.c

@@ -64,13 +64,15 @@ static int drm_simple_kms_crtc_check(struct drm_crtc *crtc,
 static void drm_simple_kms_crtc_enable(struct drm_crtc *crtc,
 				       struct drm_crtc_state *old_state)
 {
+	struct drm_plane *plane;
 	struct drm_simple_display_pipe *pipe;
 
 	pipe = container_of(crtc, struct drm_simple_display_pipe, crtc);
 	if (!pipe->funcs || !pipe->funcs->enable)
 		return;
 
-	pipe->funcs->enable(pipe, crtc->state);
+	plane = &pipe->plane;
+	pipe->funcs->enable(pipe, crtc->state, plane->state);
 }
 
 static void drm_simple_kms_crtc_disable(struct drm_crtc *crtc,

drivers/gpu/drm/exynos/exynos_dp.c

@@ -162,7 +162,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	dp->drm_dev = drm_dev;
 
 	dp->plat_data.dev_type = EXYNOS_DP;
-	dp->plat_data.power_on = exynos_dp_poweron;
+	dp->plat_data.power_on_start = exynos_dp_poweron;
 	dp->plat_data.power_off = exynos_dp_poweroff;
 	dp->plat_data.attach = exynos_dp_bridge_attach;
 	dp->plat_data.get_modes = exynos_dp_get_modes;

drivers/gpu/drm/exynos/exynos_drm_drv.c

@@ -37,26 +37,6 @@
 #define DRIVER_MAJOR	1
 #define DRIVER_MINOR	0
 
-int exynos_atomic_check(struct drm_device *dev,
-			struct drm_atomic_state *state)
-{
-	int ret;
-
-	ret = drm_atomic_helper_check_modeset(dev, state);
-	if (ret)
-		return ret;
-
-	ret = drm_atomic_normalize_zpos(dev, state);
-	if (ret)
-		return ret;
-
-	ret = drm_atomic_helper_check_planes(dev, state);
-	if (ret)
-		return ret;
-
-	return ret;
-}
-
 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 {
 	struct drm_exynos_file_private *file_priv;

drivers/gpu/drm/exynos/exynos_drm_drv.h

@@ -275,7 +275,6 @@ static inline int exynos_dpi_bind(struct drm_device *dev,
 
 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 			 bool nonblock);
-int exynos_atomic_check(struct drm_device *dev, struct drm_atomic_state *state);
 
 
 extern struct platform_driver fimd_driver;

drivers/gpu/drm/exynos/exynos_drm_fb.c

@@ -161,7 +161,7 @@ static struct drm_mode_config_helper_funcs exynos_drm_mode_config_helpers = {
 static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = {
 	.fb_create = exynos_user_fb_create,
 	.output_poll_changed = drm_fb_helper_output_poll_changed,
-	.atomic_check = exynos_atomic_check,
+	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
 
@@ -182,4 +182,6 @@ void exynos_drm_mode_config_init(struct drm_device *dev)
 	dev->mode_config.helper_private = &exynos_drm_mode_config_helpers;
 
 	dev->mode_config.allow_fb_modifiers = true;
+
+	dev->mode_config.normalize_zpos = true;
 }

drivers/gpu/drm/gma500/cdv_intel_crt.c

@@ -64,7 +64,7 @@ static void cdv_intel_crt_dpms(struct drm_encoder *encoder, int mode)
 	REG_WRITE(reg, temp);
 }
 
-static int cdv_intel_crt_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status cdv_intel_crt_mode_valid(struct drm_connector *connector,
 				struct drm_display_mode *mode)
 {
 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)

drivers/gpu/drm/gma500/cdv_intel_dp.c

@@ -505,7 +505,7 @@ static void cdv_intel_edp_backlight_off (struct gma_encoder *intel_encoder)
 	msleep(intel_dp->backlight_off_delay);
 }
 
-static int
+static enum drm_mode_status
 cdv_intel_dp_mode_valid(struct drm_connector *connector,
 		    struct drm_display_mode *mode)
 {

drivers/gpu/drm/gma500/cdv_intel_hdmi.c

@@ -223,7 +223,7 @@ static int cdv_hdmi_get_modes(struct drm_connector *connector)
 	return ret;
 }
 
-static int cdv_hdmi_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector *connector,
 				 struct drm_display_mode *mode)
 {
 	if (mode->clock > 165000)

drivers/gpu/drm/gma500/cdv_intel_lvds.c

@@ -244,7 +244,7 @@ static void cdv_intel_lvds_restore(struct drm_connector *connector)
 {
 }
 
-static int cdv_intel_lvds_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status cdv_intel_lvds_mode_valid(struct drm_connector *connector,
 			      struct drm_display_mode *mode)
 {
 	struct drm_device *dev = connector->dev;

drivers/gpu/drm/gma500/mdfld_dsi_output.c

@@ -346,7 +346,7 @@ static int mdfld_dsi_connector_get_modes(struct drm_connector *connector)
 	return 0;
 }
 
-static int mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
 						struct drm_display_mode *mode)
 {
 	struct mdfld_dsi_connector *dsi_connector =

drivers/gpu/drm/gma500/oaktrail_hdmi.c

@@ -509,7 +509,7 @@ static void oaktrail_hdmi_dpms(struct drm_encoder *encoder, int mode)
 	HDMI_WRITE(HDMI_VIDEO_REG, temp);
 }
 
-static int oaktrail_hdmi_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status oaktrail_hdmi_mode_valid(struct drm_connector *connector,
 				struct drm_display_mode *mode)
 {
 	if (mode->clock > 165000)

drivers/gpu/drm/gma500/psb_intel_drv.h

@@ -255,7 +255,7 @@ extern int intelfb_remove(struct drm_device *dev,
 extern bool psb_intel_lvds_mode_fixup(struct drm_encoder *encoder,
 				      const struct drm_display_mode *mode,
 				      struct drm_display_mode *adjusted_mode);
-extern int psb_intel_lvds_mode_valid(struct drm_connector *connector,
+extern enum drm_mode_status psb_intel_lvds_mode_valid(struct drm_connector *connector,
 				     struct drm_display_mode *mode);
 extern int psb_intel_lvds_set_property(struct drm_connector *connector,
 					struct drm_property *property,

drivers/gpu/drm/gma500/psb_intel_lvds.c

@@ -343,7 +343,7 @@ static void psb_intel_lvds_restore(struct drm_connector *connector)
 	}
 }
 
-int psb_intel_lvds_mode_valid(struct drm_connector *connector,
+enum drm_mode_status psb_intel_lvds_mode_valid(struct drm_connector *connector,
 				 struct drm_display_mode *mode)
 {
 	struct drm_psb_private *dev_priv = connector->dev->dev_private;

drivers/gpu/drm/gma500/psb_intel_sdvo.c

@@ -1157,7 +1157,7 @@ static void psb_intel_sdvo_dpms(struct drm_encoder *encoder, int mode)
 	return;
 }
 
-static int psb_intel_sdvo_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status psb_intel_sdvo_mode_valid(struct drm_connector *connector,
 				 struct drm_display_mode *mode)
 {
 	struct psb_intel_sdvo *psb_intel_sdvo = intel_attached_sdvo(connector);

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c

@@ -27,7 +27,7 @@ static int hibmc_connector_get_modes(struct drm_connector *connector)
 	return drm_add_modes_noedid(connector, 800, 600);
 }
 
-static int hibmc_connector_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status hibmc_connector_mode_valid(struct drm_connector *connector,
 				      struct drm_display_mode *mode)
 {
 	return MODE_OK;

drivers/gpu/drm/i2c/tda998x_drv.c

@@ -1106,7 +1106,7 @@ static int tda998x_connector_get_modes(struct drm_connector *connector)
 	return n;
 }
 
-static int tda998x_connector_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status tda998x_connector_mode_valid(struct drm_connector *connector,
 					struct drm_display_mode *mode)
 {
 	/* TDA19988 dotclock can go up to 165MHz */

drivers/gpu/drm/i915/intel_crt.c

@@ -748,6 +748,11 @@ intel_crt_detect(struct drm_connector *connector,
 		      connector->base.id, connector->name,
 		      force);
 
+	if (i915_modparams.load_detect_test) {
+		intel_display_power_get(dev_priv, intel_encoder->power_domain);
+		goto load_detect;
+	}
+
 	/* Skip machines without VGA that falsely report hotplug events */
 	if (dmi_check_system(intel_spurious_crt_detect))
 		return connector_status_disconnected;
@@ -776,11 +781,12 @@ intel_crt_detect(struct drm_connector *connector,
 	 * broken monitor (without edid) to work behind a broken kvm (that fails
 	 * to have the right resistors for HP detection) needs to fix this up.
 	 * For now just bail out. */
-	if (I915_HAS_HOTPLUG(dev_priv) && !i915_modparams.load_detect_test) {
+	if (I915_HAS_HOTPLUG(dev_priv)) {
 		status = connector_status_disconnected;
 		goto out;
 	}
 
+load_detect:
 	if (!force) {
 		status = connector->status;
 		goto out;

drivers/gpu/drm/i915/intel_display.c

@@ -2824,7 +2824,7 @@ intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
 			continue;
 
 		if (intel_plane_ggtt_offset(state) == plane_config->base) {
-			fb = c->primary->fb;
+			fb = state->base.fb;
 			drm_framebuffer_get(fb);
 			goto valid_fb;
 		}
@@ -9974,6 +9974,8 @@ int intel_get_load_detect_pipe(struct drm_connector *connector,
 	ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
 	if (!ret)
 		ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
+	if (!ret)
+		ret = drm_atomic_add_affected_planes(restore_state, crtc);
 	if (ret) {
 		DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret);
 		goto fail;

drivers/gpu/drm/i915/intel_fbdev.c

@@ -640,7 +640,7 @@ static bool intel_fbdev_init_bios(struct drm_device *dev,
 		if (!crtc->state->active)
 			continue;
 
-		WARN(!crtc->primary->fb,
+		WARN(!crtc->primary->state->fb,
 		     "re-used BIOS config but lost an fb on crtc %d\n",
 		     crtc->base.id);
 	}

drivers/gpu/drm/mgag200/mgag200_mode.c

@@ -1586,7 +1586,7 @@ static uint32_t mga_vga_calculate_mode_bandwidth(struct drm_display_mode *mode,
 
 #define MODE_BANDWIDTH	MODE_BAD
 
-static int mga_vga_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status mga_vga_mode_valid(struct drm_connector *connector,
 				 struct drm_display_mode *mode)
 {
 	struct drm_device *dev = connector->dev;

drivers/gpu/drm/mxsfb/mxsfb_drv.c

@@ -99,7 +99,8 @@ static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = {
 };
 
 static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe,
-			      struct drm_crtc_state *crtc_state)
+			      struct drm_crtc_state *crtc_state,
+			      struct drm_plane_state *plane_state)
 {
 	struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
 
@@ -125,12 +126,6 @@ static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe,
 	mxsfb_plane_atomic_update(mxsfb, plane_state);
 }
 
-static int mxsfb_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
-				 struct drm_plane_state *plane_state)
-{
-	return drm_gem_fb_prepare_fb(&pipe->plane, plane_state);
-}
-
 static int mxsfb_pipe_enable_vblank(struct drm_simple_display_pipe *pipe)
 {
 	struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
@@ -159,7 +154,7 @@ static struct drm_simple_display_pipe_funcs mxsfb_funcs = {
 	.enable		= mxsfb_pipe_enable,
 	.disable	= mxsfb_pipe_disable,
 	.update		= mxsfb_pipe_update,
-	.prepare_fb	= mxsfb_pipe_prepare_fb,
+	.prepare_fb	= drm_gem_fb_simple_display_pipe_prepare_fb,
 	.enable_vblank	= mxsfb_pipe_enable_vblank,
 	.disable_vblank	= mxsfb_pipe_disable_vblank,
 };

drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c

@@ -134,7 +134,7 @@ nvkm_cstate_find_best(struct nvkm_clk *clk, struct nvkm_pstate *pstate,
 			       nvkm_volt_map(volt, volt->max2_id, clk->temp));
 
 	for (cstate = start; &cstate->head != &pstate->list;
-	     cstate = list_entry(cstate->head.prev, typeof(*cstate), head)) {
+	     cstate = list_prev_entry(cstate, head)) {
 		if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
 			break;
 	}

drivers/gpu/drm/omapdrm/omap_drv.c

@@ -319,6 +319,9 @@ static int omap_modeset_init(struct drm_device *dev)
 	dev->mode_config.max_width = 8192;
 	dev->mode_config.max_height = 8192;
 
+	/* We want the zpos to be normalized */
+	dev->mode_config.normalize_zpos = true;
+
 	dev->mode_config.funcs = &omap_mode_config_funcs;
 	dev->mode_config.helper_private = &omap_mode_config_helper_funcs;
 

drivers/gpu/drm/omapdrm/omap_plane.c

@@ -65,7 +65,7 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
 	info.rotation_type = OMAP_DSS_ROT_NONE;
 	info.rotation = DRM_MODE_ROTATE_0;
 	info.global_alpha = 0xff;
-	info.zorder = state->zpos;
+	info.zorder = state->normalized_zpos;
 
 	/* update scanout: */
 	omap_framebuffer_update_scanout(state->fb, state, &info);

drivers/gpu/drm/pl111/pl111_display.c

@@ -120,7 +120,8 @@ static int pl111_display_check(struct drm_simple_display_pipe *pipe,
 }
 
 static void pl111_display_enable(struct drm_simple_display_pipe *pipe,
-				 struct drm_crtc_state *cstate)
+				 struct drm_crtc_state *cstate,
+				 struct drm_plane_state *plane_state)
 {
 	struct drm_crtc *crtc = &pipe->crtc;
 	struct drm_plane *plane = &pipe->plane;
@@ -376,19 +377,13 @@ static void pl111_display_disable_vblank(struct drm_simple_display_pipe *pipe)
 	writel(0, priv->regs + priv->ienb);
 }
 
-static int pl111_display_prepare_fb(struct drm_simple_display_pipe *pipe,
-				    struct drm_plane_state *plane_state)
-{
-	return drm_gem_fb_prepare_fb(&pipe->plane, plane_state);
-}
-
 static struct drm_simple_display_pipe_funcs pl111_display_funcs = {
 	.mode_valid = pl111_mode_valid,
 	.check = pl111_display_check,
 	.enable = pl111_display_enable,
 	.disable = pl111_display_disable,
 	.update = pl111_display_update,
-	.prepare_fb = pl111_display_prepare_fb,
+	.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
 };
 
 static int pl111_clk_div_choose_div(struct clk_hw *hw, unsigned long rate,

drivers/gpu/drm/qxl/qxl_display.c

@@ -1037,7 +1037,7 @@ static int qxl_conn_get_modes(struct drm_connector *connector)
 	return ret;
 }
 
-static int qxl_conn_mode_valid(struct drm_connector *connector,
+static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
 			       struct drm_display_mode *mode)
 {
 	struct drm_device *ddev = connector->dev;

drivers/gpu/drm/rcar-du/rcar_du_drv.h

@@ -87,7 +87,6 @@ struct rcar_du_device {
 	struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
 
 	struct {
-		struct drm_property *alpha;
 		struct drm_property *colorkey;
 	} props;
 

drivers/gpu/drm/rcar-du/rcar_du_kms.c

@@ -233,15 +233,7 @@ static int rcar_du_atomic_check(struct drm_device *dev,
 	struct rcar_du_device *rcdu = dev->dev_private;
 	int ret;
 
-	ret = drm_atomic_helper_check_modeset(dev, state);
-	if (ret)
-		return ret;
-
-	ret = drm_atomic_normalize_zpos(dev, state);
-	if (ret)
-		return ret;
-
-	ret = drm_atomic_helper_check_planes(dev, state);
+	ret = drm_atomic_helper_check(dev, state);
 	if (ret)
 		return ret;
 
@@ -415,11 +407,6 @@ static int rcar_du_encoders_init(struct rcar_du_device *rcdu)
 
 static int rcar_du_properties_init(struct rcar_du_device *rcdu)
 {
-	rcdu->props.alpha =
-		drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
-	if (rcdu->props.alpha == NULL)
-		return -ENOMEM;
-
 	/*
 	 * The color key is expressed as an RGB888 triplet stored in a 32-bit
 	 * integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
@@ -529,6 +516,7 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 	dev->mode_config.min_height = 0;
 	dev->mode_config.max_width = 4095;
 	dev->mode_config.max_height = 2047;
+	dev->mode_config.normalize_zpos = true;
 	dev->mode_config.funcs = &rcar_du_mode_config_funcs;
 	dev->mode_config.helper_private = &rcar_du_mode_config_helper;
 

drivers/gpu/drm/rcar-du/rcar_du_plane.c

@@ -423,7 +423,7 @@ static void rcar_du_plane_setup_mode(struct rcar_du_group *rgrp,
 		rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
 	else
 		rcar_du_plane_write(rgrp, index, PnALPHAR,
-				    PnALPHAR_ABIT_X | state->alpha);
+				    PnALPHAR_ABIT_X | state->state.alpha >> 8);
 
 	pnmr = PnMR_BM_MD | state->format->pnmr;
 
@@ -692,11 +692,11 @@ static void rcar_du_plane_reset(struct drm_plane *plane)
 
 	state->hwindex = -1;
 	state->source = RCAR_DU_PLANE_MEMORY;
-	state->alpha = 255;
 	state->colorkey = RCAR_DU_COLORKEY_NONE;
 	state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
 
 	plane->state = &state->state;
+	plane->state->alpha = DRM_BLEND_ALPHA_OPAQUE;
 	plane->state->plane = plane;
 }
 
@@ -708,9 +708,7 @@ static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
 	struct rcar_du_plane_state *rstate = to_rcar_plane_state(state);
 	struct rcar_du_device *rcdu = to_rcar_plane(plane)->group->dev;
 
-	if (property == rcdu->props.alpha)
-		rstate->alpha = val;
-	else if (property == rcdu->props.colorkey)
+	if (property == rcdu->props.colorkey)
 		rstate->colorkey = val;
 	else
 		return -EINVAL;
@@ -726,9 +724,7 @@ static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
 		container_of(state, const struct rcar_du_plane_state, state);
 	struct rcar_du_device *rcdu = to_rcar_plane(plane)->group->dev;
 
-	if (property == rcdu->props.alpha)
-		*val = rstate->alpha;
-	else if (property == rcdu->props.colorkey)
+	if (property == rcdu->props.colorkey)
 		*val = rstate->colorkey;
 	else
 		return -EINVAL;
@@ -796,11 +792,10 @@ int rcar_du_planes_init(struct rcar_du_group *rgrp)
 		if (type == DRM_PLANE_TYPE_PRIMARY)
 			continue;
 
-		drm_object_attach_property(&plane->plane.base,
-					   rcdu->props.alpha, 255);
 		drm_object_attach_property(&plane->plane.base,
 					   rcdu->props.colorkey,
 					   RCAR_DU_COLORKEY_NONE);
+		drm_plane_create_alpha_property(&plane->plane);
 		drm_plane_create_zpos_property(&plane->plane, 1, 1, 7);
 	}
 

drivers/gpu/drm/rcar-du/rcar_du_plane.h

@@ -50,7 +50,6 @@ static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
  * @state: base DRM plane state
  * @format: information about the pixel format used by the plane
  * @hwindex: 0-based hardware plane index, -1 means unused
- * @alpha: value of the plane alpha property
  * @colorkey: value of the plane colorkey property
  */
 struct rcar_du_plane_state {
@@ -60,7 +59,6 @@ struct rcar_du_plane_state {
 	int hwindex;
 	enum rcar_du_plane_source source;
 
-	unsigned int alpha;
 	unsigned int colorkey;
 };
 

drivers/gpu/drm/rcar-du/rcar_du_vsp.c

@@ -54,6 +54,7 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
 	};
 	struct rcar_du_plane_state state = {
 		.state = {
+			.alpha = DRM_BLEND_ALPHA_OPAQUE,
 			.crtc = &crtc->crtc,
 			.dst.x1 = 0,
 			.dst.y1 = 0,
@@ -67,7 +68,6 @@ void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
 		},
 		.format = rcar_du_format_info(DRM_FORMAT_ARGB8888),
 		.source = RCAR_DU_PLANE_VSPD1,
-		.alpha = 255,
 		.colorkey = 0,
 	};
 
@@ -173,7 +173,7 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
 	struct vsp1_du_atomic_config cfg = {
 		.pixelformat = 0,
 		.pitch = fb->pitches[0],
-		.alpha = state->alpha,
+		.alpha = state->state.alpha >> 8,
 		.zpos = state->state.zpos,
 	};
 	unsigned int i;
@@ -335,44 +335,13 @@ static void rcar_du_vsp_plane_reset(struct drm_plane *plane)
 	if (state == NULL)
 		return;
 
-	state->alpha = 255;
+	state->state.alpha = DRM_BLEND_ALPHA_OPAQUE;
 	state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
 
 	plane->state = &state->state;
 	plane->state->plane = plane;
 }
 
-static int rcar_du_vsp_plane_atomic_set_property(struct drm_plane *plane,
-	struct drm_plane_state *state, struct drm_property *property,
-	uint64_t val)
-{
-	struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
-	struct rcar_du_device *rcdu = to_rcar_vsp_plane(plane)->vsp->dev;
-
-	if (property == rcdu->props.alpha)
-		rstate->alpha = val;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-
-static int rcar_du_vsp_plane_atomic_get_property(struct drm_plane *plane,
-	const struct drm_plane_state *state, struct drm_property *property,
-	uint64_t *val)
-{
-	const struct rcar_du_vsp_plane_state *rstate =
-		container_of(state, const struct rcar_du_vsp_plane_state, state);
-	struct rcar_du_device *rcdu = to_rcar_vsp_plane(plane)->vsp->dev;
-
-	if (property == rcdu->props.alpha)
-		*val = rstate->alpha;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-
 static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
 	.update_plane = drm_atomic_helper_update_plane,
 	.disable_plane = drm_atomic_helper_disable_plane,
@@ -380,8 +349,6 @@ static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
 	.destroy = drm_plane_cleanup,
 	.atomic_duplicate_state = rcar_du_vsp_plane_atomic_duplicate_state,
 	.atomic_destroy_state = rcar_du_vsp_plane_atomic_destroy_state,
-	.atomic_set_property = rcar_du_vsp_plane_atomic_set_property,
-	.atomic_get_property = rcar_du_vsp_plane_atomic_get_property,
 };
 
 int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
@@ -438,8 +405,7 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
 		if (type == DRM_PLANE_TYPE_PRIMARY)
 			continue;
 
-		drm_object_attach_property(&plane->plane.base,
-					   rcdu->props.alpha, 255);
+		drm_plane_create_alpha_property(&plane->plane);
 		drm_plane_create_zpos_property(&plane->plane, 1, 1,
 					       vsp->num_planes - 1);
 	}

drivers/gpu/drm/rcar-du/rcar_du_vsp.h

@@ -44,15 +44,12 @@ static inline struct rcar_du_vsp_plane *to_rcar_vsp_plane(struct drm_plane *p)
  * @state: base DRM plane state
  * @format: information about the pixel format used by the plane
  * @sg_tables: scatter-gather tables for the frame buffer memory
- * @alpha: value of the plane alpha property
  */
 struct rcar_du_vsp_plane_state {
 	struct drm_plane_state state;
 
 	const struct rcar_du_format_info *format;
 	struct sg_table sg_tables[3];
-
-	unsigned int alpha;
 };
 
 static inline struct rcar_du_vsp_plane_state *