drm-misc-next for 5.7:

UAPI Changes: Cross-subsystem Changes: Core Changes: Driver Changes: - fb-helper: Remove drm_fb_helper_{add,add_all,remove}_one_connector - fbdev: some cleanups and dead-code removal - Conversions to simple-encoder - zero-length array removal - Panel: panel-dpi support in panel-simple, Novatek NT35510, Elida KD35T133, -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXmZKhwAKCRDj7w1vZxhR xUgxAQDB1kkf1xQdU7rdw344vaaMf270qBeG+GNX/py3h9pbnwEA7XQvbB1wWBec hR629PO+csE0dWcFkGi8d5kpdWQCOQY= =PRn3 -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2020-03-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 5.7: UAPI Changes: Cross-subsystem Changes: Core Changes: Driver Changes: - fb-helper: Remove drm_fb_helper_{add,add_all,remove}_one_connector - fbdev: some cleanups and dead-code removal - Conversions to simple-encoder - zero-length array removal - Panel: panel-dpi support in panel-simple, Novatek NT35510, Elida KD35T133, Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20200309135439.dicfnbo4ikj4tkz7@gilmour
2024-11-23 12:42:02 +00:00 · 2020-03-12 12:42:41 +10:00 · 2020-03-12 12:42:41 +10:00 · 9e12da086e
commit 9e12da086e
parent d3bd37f587 bc1a4130fc
94 changed files with 3016 additions and 922 deletions
--- a/Documentation/devicetree/bindings/display/panel/display-timing.txt
+++ b/Documentation/devicetree/bindings/display/panel/display-timing.txt
@ -1,123 +1 @@
-display-timing bindings
-=======================
-
-display-timings node
--------------------
-
-required properties:
- - none
-
-optional properties:
- - native-mode: The native mode for the display, in case multiple modes are
-		provided. When omitted, assume the first node is the native.
-
-timing subnode
--------------
-
-required properties:
- - hactive, vactive: display resolution
- - hfront-porch, hback-porch, hsync-len: horizontal display timing parameters
-   in pixels
-   vfront-porch, vback-porch, vsync-len: vertical display timing parameters in
-   lines
- - clock-frequency: display clock in Hz
-
-optional properties:
- - hsync-active: hsync pulse is active low/high/ignored
- - vsync-active: vsync pulse is active low/high/ignored
- - de-active: data-enable pulse is active low/high/ignored
- - pixelclk-active: with
-			- active high = drive pixel data on rising edge/
-					sample data on falling edge
-			- active low  = drive pixel data on falling edge/
-					sample data on rising edge
-			- ignored     = ignored
- - syncclk-active: with
-			- active high = drive sync on rising edge/
-					sample sync on falling edge of pixel
-					clock
-			- active low  = drive sync on falling edge/
-					sample sync on rising edge of pixel
-					clock
-			- omitted     = same configuration as pixelclk-active
- - interlaced (bool): boolean to enable interlaced mode
- - doublescan (bool): boolean to enable doublescan mode
- - doubleclk (bool): boolean to enable doubleclock mode
-
-All the optional properties that are not bool follow the following logic:
-    <1>: high active
-    <0>: low active
-    omitted: not used on hardware
-
-There are different ways of describing the capabilities of a display. The
-devicetree representation corresponds to the one commonly found in datasheets
-for displays. If a display supports multiple signal timings, the native-mode
-can be specified.
-
-The parameters are defined as:
-
-  +----------+-------------------------------------+----------+-------+
-  |          |        ^                            |          |       |
-  |          |        |vback_porch                 |          |       |
-  |          |        v                            |          |       |
-  +----------#######################################----------+-------+
-  |          #        ^                            #          |       |
-  |          #        |                            #          |       |
-  |  hback   #        |                            #  hfront  | hsync |
-  |   porch  #        |       hactive              #  porch   |  len  |
-  |<-------->#<-------+--------------------------->#<-------->|<----->|
-  |          #        |                            #          |       |
-  |          #        |vactive                     #          |       |
-  |          #        |                            #          |       |
-  |          #        v                            #          |       |
-  +----------#######################################----------+-------+
-  |          |        ^                            |          |       |
-  |          |        |vfront_porch                |          |       |
-  |          |        v                            |          |       |
-  +----------+-------------------------------------+----------+-------+
-  |          |        ^                            |          |       |
-  |          |        |vsync_len                   |          |       |
-  |          |        v                            |          |       |
-  +----------+-------------------------------------+----------+-------+
-
-Note: In addition to being used as subnode(s) of display-timings, the timing
-      subnode may also be used on its own. This is appropriate if only one mode
-      need be conveyed. In this case, the node should be named 'panel-timing'.
-
-
-Example:
-
-	display-timings {
-		native-mode = <&timing0>;
-		timing0: 1080p24 {
-			/* 1920x1080p24 */
-			clock-frequency = <52000000>;
-			hactive = <1920>;
-			vactive = <1080>;
-			hfront-porch = <25>;
-			hback-porch = <25>;
-			hsync-len = <25>;
-			vback-porch = <2>;
-			vfront-porch = <2>;
-			vsync-len = <2>;
-			hsync-active = <1>;
-		};
-	};
-
-Every required property also supports the use of ranges, so the commonly used
-datasheet description with minimum, typical and maximum values can be used.
-
-Example:
-
-	timing1: timing {
-		/* 1920x1080p24 */
-		clock-frequency = <148500000>;
-		hactive = <1920>;
-		vactive = <1080>;
-		hsync-len = <0 44 60>;
-		hfront-porch = <80 88 95>;
-		hback-porch = <100 148 160>;
-		vfront-porch = <0 4 6>;
-		vback-porch = <0 36 50>;
-		vsync-len = <0 5 6>;
-	};
+See display-timings.yaml in this directory.
--- a/Documentation/devicetree/bindings/display/panel/display-timings.yaml
+++ b/Documentation/devicetree/bindings/display/panel/display-timings.yaml
@ -0,0 +1,77 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/display-timings.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: display timing bindings
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+  - Sam Ravnborg <sam@ravnborg.org>
+
+description: |
+  A display panel may be able to handle several display timings,
+  with different resolutions.
+  The display-timings node makes it possible to specify the timing
+  and to specify the timing that is native for the display.
+
+properties:
+  $nodename:
+    const: display-timings
+
+  native-mode:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: |
+      The default display timing is the one specified as native-mode.
+      If no native-mode is specified then the first node is assumed the
+      native mode.
+
+patternProperties:
+  "^timing":
+    type: object
+    allOf:
+      - $ref: panel-timing.yaml#
+
+additionalProperties: false
+
+examples:
+  - |+
+
+    /*
+     * Example that specifies panel timing using minimum, typical,
+     * maximum values as commonly used in datasheet description.
+     * timing1 is the native-mode.
+     */
+    display-timings {
+        native-mode = <&timing1>;
+        timing0 {
+            /* 1920x1080p24 */
+            clock-frequency = <148500000>;
+            hactive = <1920>;
+            vactive = <1080>;
+            hsync-len = <0 44 60>;
+            hfront-porch = <80 88 95>;
+            hback-porch = <100 148 160>;
+            vfront-porch = <0 4 6>;
+            vback-porch = <0 36 50>;
+            vsync-len = <0 5 6>;
+        };
+        timing1 {
+            /* 1920x1080p24 */
+            clock-frequency = <52000000>;
+            hactive = <1920>;
+            vactive = <1080>;
+            hfront-porch = <25>;
+            hback-porch = <25>;
+            hsync-len = <0 25 25>;
+            vback-porch = <2>;
+            vfront-porch = <2>;
+            vsync-len = <2>;
+            hsync-active = <1>;
+            pixelclk-active = <1>;
+        };
+    };
+
+...
--- a/Documentation/devicetree/bindings/display/panel/elida,kd35t133.yaml
+++ b/Documentation/devicetree/bindings/display/panel/elida,kd35t133.yaml
@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/elida,kd35t133.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Elida KD35T133 3.5in 320x480 DSI panel
+
+maintainers:
+  - Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: elida,kd35t133
+  reg: true
+  backlight: true
+  reset-gpios: true
+  iovcc-supply:
+     description: regulator that supplies the iovcc voltage
+  vdd-supply:
+     description: regulator that supplies the vdd voltage
+
+required:
+  - compatible
+  - reg
+  - backlight
+  - iovcc-supply
+  - vdd-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    dsi@ff450000 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        panel@0 {
+            compatible = "elida,kd35t133";
+            reg = <0>;
+            backlight = <&backlight>;
+            iovcc-supply = <&vcc_1v8>;
+            vdd-supply = <&vcc3v3_lcd>;
+        };
+    };
+
+...
--- a/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
+++ b/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/novatek,nt35510.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Novatek NT35510-based display panels
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: hydis,hva40wv1
+      - const: novatek,nt35510
+    description: This indicates the panel manufacturer of the panel
+      that is in turn using the NT35510 panel driver. The compatible
+      string determines how the NT35510 panel driver shall be configured
+      to work with the indicated panel. The novatek,nt35510 compatible shall
+      always be provided as a fallback.
+  reg: true
+  reset-gpios: true
+  vdd-supply:
+     description: regulator that supplies the vdd voltage
+  vddi-supply:
+     description: regulator that supplies the vddi voltage
+  backlight: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi@a0351000 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        panel {
+            compatible = "hydis,hva40wv1", "novatek,nt35510";
+            reg = <0>;
+            vdd-supply = <&ab8500_ldo_aux4_reg>;
+            vddi-supply = <&ab8500_ldo_aux6_reg>;
+            reset-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
+            backlight = <&gpio_bl>;
+        };
+    };
+
+...
--- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
@ -54,13 +54,20 @@ properties:

  # Display Timings
  panel-timing:
-    type: object
    description:
      Most display panels are restricted to a single resolution and
      require specific display timings. The panel-timing subnode expresses those
-      timings as specified in the timing subnode section of the display timing
-      bindings defined in
-      Documentation/devicetree/bindings/display/panel/display-timing.txt.
+      timings.
+    allOf:
+      - $ref: panel-timing.yaml#
+
+  display-timings:
+    description:
+      Some display panels supports several resolutions with different timing.
+      The display-timings bindings supports specifying several timings and
+      optional specify which is the native mode.
+    allOf:
+      - $ref: display-timings.yaml#

  # Connectivity
  port:
--- a/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
+++ b/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
@ -1,50 +0,0 @@
-Generic MIPI DPI Panel
-======================
-
-Required properties:
- compatible: "panel-dpi"
-
-Optional properties:
- label: a symbolic name for the panel
- enable-gpios: panel enable gpio
- reset-gpios: GPIO to control the RESET pin
- vcc-supply: phandle of regulator that will be used to enable power to the display
- backlight: phandle of the backlight device
-
-Required nodes:
- "panel-timing" containing video timings
-  (Documentation/devicetree/bindings/display/panel/display-timing.txt)
- Video port for DPI input
-
-Example
-------
-
-lcd0: display@0 {
-        compatible = "samsung,lte430wq-f0c", "panel-dpi";
-        label = "lcd";
-
-        backlight = <&backlight>;
-
-        port {
-            lcd_in: endpoint {
-                    remote-endpoint = <&dpi_out>;
-            };
-        };
-
-        panel-timing {
-                clock-frequency = <9200000>;
-                hactive = <480>;
-                vactive = <272>;
-                hfront-porch = <8>;
-                hback-porch = <4>;
-                hsync-len = <41>;
-                vback-porch = <2>;
-                vfront-porch = <4>;
-                vsync-len = <10>;
-
-                hsync-active = <0>;
-                vsync-active = <0>;
-                de-active = <1>;
-                pixelclk-active = <1>;
-        };
-};
--- a/Documentation/devicetree/bindings/display/panel/panel-dpi.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-dpi.yaml
@ -0,0 +1,81 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/panel-dpi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic MIPI DPI Panel
+
+maintainers:
+  - Sam Ravnborg <sam@ravnborg.org>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    description:
+      Shall contain a panel specific compatible and "panel-dpi"
+      in that order.
+    items:
+      - {}
+      - const: panel-dpi
+
+  data-mapping:
+    enum:
+      - rgb24
+      - rgb565
+      - bgr666
+    description: |
+      Describes the media format, how the display panel is connected
+      to the display interface.
+
+  backlight: true
+  enable-gpios: true
+  height-mm: true
+  label: true
+  panel-timing: true
+  port: true
+  power-supply: true
+  reset-gpios: true
+  width-mm: true
+
+required:
+  - panel-timing
+  - power-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    panel@0 {
+        compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
+        label = "osddisplay";
+        power-supply = <&vcc_supply>;
+        data-mapping = "rgb565";
+        backlight = <&backlight>;
+
+        port {
+            lcd_in: endpoint {
+                remote-endpoint = <&dpi_out>;
+            };
+        };
+        panel-timing {
+            clock-frequency = <9200000>;
+            hactive = <800>;
+            vactive = <480>;
+            hfront-porch = <8>;
+            hback-porch = <4>;
+            hsync-len = <41>;
+            vback-porch = <2>;
+            vfront-porch = <4>;
+            vsync-len = <10>;
+
+            hsync-active = <0>;
+            vsync-active = <0>;
+            de-active = <1>;
+            pixelclk-active = <1>;
+        };
+    };
+
+...
--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
@ -177,6 +177,8 @@ properties:
      - nec,nl4827hc19-05b
        # Netron-DY E231732 7.0" WSVGA TFT LCD panel
      - netron-dy,e231732
+        # NewEast Optoelectronics CO., LTD WJFH116008A eDP TFT LCD panel
+      - neweast,wjfh116008a
        # Newhaven Display International 480 x 272 TFT LCD panel
      - newhaven,nhd-4.3-480272ef-atxl
        # NLT Technologies, Ltd. 15.6" FHD (1920x1080) LVDS TFT LCD panel
--- a/Documentation/devicetree/bindings/display/panel/panel-timing.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-timing.yaml
@ -0,0 +1,227 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/panel-timing.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: panel timing bindings
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Sam Ravnborg <sam@ravnborg.org>
+
+description: |
+  There are different ways of describing the timing data of a panel. The
+  devicetree representation corresponds to the one commonly found in datasheets
+  for panels.
+
+  The parameters are defined as seen in the following illustration.
+
+  +----------+-------------------------------------+----------+-------+
+  |          |        ^                            |          |       |
+  |          |        |vback_porch                 |          |       |
+  |          |        v                            |          |       |
+  +----------#######################################----------+-------+
+  |          #        ^                            #          |       |
+  |          #        |                            #          |       |
+  |  hback   #        |                            #  hfront  | hsync |
+  |   porch  #        |       hactive              #  porch   |  len  |
+  |<-------->#<-------+--------------------------->#<-------->|<----->|
+  |          #        |                            #          |       |
+  |          #        |vactive                     #          |       |
+  |          #        |                            #          |       |
+  |          #        v                            #          |       |
+  +----------#######################################----------+-------+
+  |          |        ^                            |          |       |
+  |          |        |vfront_porch                |          |       |
+  |          |        v                            |          |       |
+  +----------+-------------------------------------+----------+-------+
+  |          |        ^                            |          |       |
+  |          |        |vsync_len                   |          |       |
+  |          |        v                            |          |       |
+  +----------+-------------------------------------+----------+-------+
+
+
+  The following is the panel timings shown with time on the x-axis.
+  This matches the timing diagrams often found in data sheets.
+
+              Active                 Front           Sync           Back
+              Region                 Porch                          Porch
+  <-----------------------><----------------><-------------><-------------->
+    //////////////////////|
+   ////////////////////// |
+  //////////////////////  |..................               ................
+                                             _______________
+
+  Timing can be specified either as a typical value or as a tuple
+  of min, typ, max values.
+
+properties:
+
+  clock-frequency:
+   description: Panel clock in Hz
+
+  hactive:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Horizontal panel resolution in pixels
+
+  vactive:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Vertical panel resolution in pixels
+
+  hfront-porch:
+    description: Horizontal front porch panel timing
+    oneOf:
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32
+        - maxItems: 1
+          items:
+            description: typical number of pixels
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32-array
+        - minItems: 3
+          maxItems: 3
+          items:
+            description: min, typ, max number of pixels
+
+  hback-porch:
+    description: Horizontal back porch timing
+    oneOf:
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32
+        - maxItems: 1
+          items:
+            description: typical number of pixels
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32-array
+        - minItems: 3
+          maxItems: 3
+          items:
+            description: min, typ, max number of pixels
+
+  hsync-len:
+    description: Horizontal sync length panel timing
+    oneOf:
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32
+        - maxItems: 1
+          items:
+            description: typical number of pixels
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32-array
+        - minItems: 3
+          maxItems: 3
+          items:
+            description: min, typ, max number of pixels
+
+  vfront-porch:
+    description: Vertical front porch panel timing
+    oneOf:
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32
+        - maxItems: 1
+          items:
+            description: typical number of lines
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32-array
+        - minItems: 3
+          maxItems: 3
+          items:
+            description: min, typ, max number of lines
+
+  vback-porch:
+    description: Vertical back porch panel timing
+    oneOf:
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32
+        - maxItems: 1
+          items:
+            description: typical number of lines
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32-array
+        - minItems: 3
+          maxItems: 3
+          items:
+            description: min, typ, max number of lines
+
+  vsync-len:
+    description: Vertical sync length panel timing
+    oneOf:
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32
+        - maxItems: 1
+          items:
+            description: typical number of lines
+      - allOf:
+        - $ref: /schemas/types.yaml#/definitions/uint32-array
+        - minItems: 3
+          maxItems: 3
+          items:
+            description: min, typ, max number of lines
+
+  hsync-active:
+    description: |
+      Horizontal sync pulse.
+      0 selects active low, 1 selects active high.
+      If omitted then it is not used by the hardware
+    enum: [0, 1]
+
+  vsync-active:
+    description: |
+      Vertical sync pulse.
+      0 selects active low, 1 selects active high.
+      If omitted then it is not used by the hardware
+    enum: [0, 1]
+
+  de-active:
+    description: |
+      Data enable.
+      0 selects active low, 1 selects active high.
+      If omitted then it is not used by the hardware
+    enum: [0, 1]
+
+  pixelclk-active:
+    description: |
+      Data driving on rising or falling edge.
+      Use 0 to drive pixel data on falling edge and
+      sample data on rising edge.
+      Use 1 to drive pixel data on rising edge and
+      sample data on falling edge
+    enum: [0, 1]
+
+  syncclk-active:
+    description: |
+      Drive sync on rising or sample sync on falling edge.
+      If not specified then the setup is as specified by pixelclk-active.
+      Use 0 to drive sync on falling edge and
+      sample sync on rising edge of pixel clock.
+      Use 1 to drive sync on rising edge and
+      sample sync on falling edge of pixel clock
+    enum: [0, 1]
+
+  interlaced:
+    type: boolean
+    description: Enable interlaced mode
+
+  doublescan:
+    type: boolean
+    description: Enable double scan mode
+
+  doubleclk:
+    type: boolean
+    description: Enable double clock mode
+
+required:
+ - clock-frequency
+ - hactive
+ - vactive
+ - hfront-porch
+ - hback-porch
+ - hsync-len
+ - vfront-porch
+ - vback-porch
+ - vsync-len
+
+additionalProperties: false
+
+...
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-drm.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-drm.txt
@ -1,19 +0,0 @@
-Rockchip DRM master device
-================================
-
-The Rockchip DRM master device is a virtual device needed to list all
-vop devices or other display interface nodes that comprise the
-graphics subsystem.
-
-Required properties:
- compatible: Should be "rockchip,display-subsystem"
- ports: Should contain a list of phandles pointing to display interface port
-  of vop devices. vop definitions as defined in
-  Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
-
-example:
-
-display-subsystem {
-	compatible = "rockchip,display-subsystem";
-	ports = <&vopl_out>, <&vopb_out>;
-};
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-drm.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-drm.yaml
@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/rockchip/rockchip-drm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip DRM master device
+
+maintainers:
+  - Sandy Huang <hjc@rock-chips.com>
+  - Heiko Stuebner <heiko@sntech.de>
+
+description: |
+  The Rockchip DRM master device is a virtual device needed to list all
+  vop devices or other display interface nodes that comprise the
+  graphics subsystem.
+
+properties:
+  compatible:
+    const: rockchip,display-subsystem
+
+  ports:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: |
+      Should contain a list of phandles pointing to display interface port
+      of vop devices. vop definitions as defined in
+      Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt
+
+required:
+  - compatible
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    display-subsystem {
+        compatible = "rockchip,display-subsystem";
+        ports = <&vopl_out>, <&vopb_out>;
+    };
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@ -425,6 +425,8 @@ patternProperties:
    description: Shenzhen Hugsun Technology Co. Ltd.
  "^hwacom,.*":
    description: HwaCom Systems Inc.
+  "^hydis,.*":
+    description: Hydis Technologies
  "^hyundai,.*":
    description: Hyundai Technology
  "^i2se,.*":
@ -665,6 +667,8 @@ patternProperties:
    description: Netron DY
  "^netxeon,.*":
    description: Shenzhen Netxeon Technology CO., LTD
+  "^neweast,.*":
+    description: Guangdong Neweast Optoelectronics CO., LTD
  "^nexbox,.*":
    description: Nexbox
  "^nextthing,.*":
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@ -359,23 +359,6 @@ Contact: Sean Paul

 Level: Starter

-drm_fb_helper tasks
-------------------
-
- drm_fb_helper_restore_fbdev_mode_unlocked() should call restore_fbdev_mode()
-  not the _force variant so it can bail out if there is a master. But first
-  these igt tests need to be fixed: kms_fbcon_fbt@psr and
-  kms_fbcon_fbt@psr-suspend.
-
- The max connector argument for drm_fb_helper_init() isn't used anymore and
-  can be removed.
-
- The helper doesn't keep an array of connectors anymore so these can be
-  removed: drm_fb_helper_single_add_all_connectors(),
-  drm_fb_helper_add_one_connector() and drm_fb_helper_remove_one_connector().
-
-Level: Intermediate
-
 connector register/unregister fixes
 -----------------------------------

--- a/9
+++ b/9
@ -5022,7 +5022,7 @@ L:	dri-devel@lists.freedesktop.org
 L:	linaro-mm-sig@lists.linaro.org (moderated for non-subscribers)
 F:	drivers/dma-buf/
 F:	include/linux/dma-buf*
-F:	include/linux/reservation.h
+F:	include/linux/dma-resv.h
 F:	include/linux/*fence.h
 F:	Documentation/driver-api/dma-buf.rst
 K:	dma_(buf|fence|resv)
@ -5336,6 +5336,13 @@ F:	drivers/gpu/drm/msm/
 F:	include/uapi/drm/msm_drm.h
 F:	Documentation/devicetree/bindings/display/msm/

+DRM DRIVER FOR NOVATEK NT35510 PANELS
+M:	Linus Walleij <linus.walleij@linaro.org>
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+S:	Maintained
+F:	drivers/gpu/drm/panel/panel-novatek-nt35510.c
+F:	Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
+
 DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS
 M:	Ben Skeggs <bskeggs@redhat.com>
 L:	dri-devel@lists.freedesktop.org
--- a/drivers/dma-buf/Kconfig
+++ b/drivers/dma-buf/Kconfig
@ -39,6 +39,16 @@ config UDMABUF
 	  A driver to let userspace turn memfd regions into dma-bufs.
 	  Qemu can use this to create host dmabufs for guest framebuffers.

+config DMABUF_MOVE_NOTIFY
+	bool "Move notify between drivers (EXPERIMENTAL)"
+	default n
+	help
+	  Don''t pin buffers if the dynamic DMA-buf interface is available on both the
+	  exporter as well as the importer. This fixes a security problem where
+	  userspace is able to pin unrestricted amounts of memory through DMA-buf.
+	  But marked experimental because we don''t jet have a consistent execution
+	  context and memory management between drivers.
+
 config DMABUF_SELFTESTS
 	tristate "Selftests for the dma-buf interfaces"
 	default n
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@ -525,7 +525,10 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
 	}

 	if (WARN_ON(exp_info->ops->cache_sgt_mapping &&
-		    exp_info->ops->dynamic_mapping))
+		    (exp_info->ops->pin || exp_info->ops->unpin)))
+		return ERR_PTR(-EINVAL);
+
+	if (WARN_ON(!exp_info->ops->pin != !exp_info->ops->unpin))
 		return ERR_PTR(-EINVAL);

 	if (!try_module_get(exp_info->owner))
@ -652,7 +655,8 @@ EXPORT_SYMBOL_GPL(dma_buf_put);
 * calls attach() of dma_buf_ops to allow device-specific attach functionality
 * @dmabuf:		[in]	buffer to attach device to.
 * @dev:		[in]	device to be attached.
- * @dynamic_mapping:	[in]	calling convention for map/unmap
+ * @importer_ops	[in]	importer operations for the attachment
+ * @importer_priv	[in]	importer private pointer for the attachment
 *
 * Returns struct dma_buf_attachment pointer for this attachment. Attachments
 * must be cleaned up by calling dma_buf_detach().
@ -668,7 +672,8 @@ EXPORT_SYMBOL_GPL(dma_buf_put);
 */
 struct dma_buf_attachment *
 dma_buf_dynamic_attach(struct dma_buf *dmabuf, struct device *dev,
-		       bool dynamic_mapping)
+		       const struct dma_buf_attach_ops *importer_ops,
+		       void *importer_priv)
 {
 	struct dma_buf_attachment *attach;
 	int ret;
@ -676,13 +681,17 @@ dma_buf_dynamic_attach(struct dma_buf *dmabuf, struct device *dev,
 	if (WARN_ON(!dmabuf || !dev))
 		return ERR_PTR(-EINVAL);

+	if (WARN_ON(importer_ops && !importer_ops->move_notify))
+		return ERR_PTR(-EINVAL);
+
 	attach = kzalloc(sizeof(*attach), GFP_KERNEL);
 	if (!attach)
 		return ERR_PTR(-ENOMEM);

 	attach->dev = dev;
 	attach->dmabuf = dmabuf;
-	attach->dynamic_mapping = dynamic_mapping;
+	attach->importer_ops = importer_ops;
+	attach->importer_priv = importer_priv;

 	if (dmabuf->ops->attach) {
 		ret = dmabuf->ops->attach(dmabuf, attach);
@ -701,15 +710,19 @@ dma_buf_dynamic_attach(struct dma_buf *dmabuf, struct device *dev,
 	    dma_buf_is_dynamic(dmabuf)) {
 		struct sg_table *sgt;

-		if (dma_buf_is_dynamic(attach->dmabuf))
+		if (dma_buf_is_dynamic(attach->dmabuf)) {
 			dma_resv_lock(attach->dmabuf->resv, NULL);
+			ret = dma_buf_pin(attach);
+			if (ret)
+				goto err_unlock;
+		}

 		sgt = dmabuf->ops->map_dma_buf(attach, DMA_BIDIRECTIONAL);
 		if (!sgt)
 			sgt = ERR_PTR(-ENOMEM);
 		if (IS_ERR(sgt)) {
 			ret = PTR_ERR(sgt);
-			goto err_unlock;
+			goto err_unpin;
 		}
 		if (dma_buf_is_dynamic(attach->dmabuf))
 			dma_resv_unlock(attach->dmabuf->resv);
@ -723,6 +736,10 @@ err_attach:
 	kfree(attach);
 	return ERR_PTR(ret);

+err_unpin:
+	if (dma_buf_is_dynamic(attach->dmabuf))
+		dma_buf_unpin(attach);
+
 err_unlock:
 	if (dma_buf_is_dynamic(attach->dmabuf))
 		dma_resv_unlock(attach->dmabuf->resv);
@ -743,7 +760,7 @@ EXPORT_SYMBOL_GPL(dma_buf_dynamic_attach);
 struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
 					  struct device *dev)
 {
-	return dma_buf_dynamic_attach(dmabuf, dev, false);
+	return dma_buf_dynamic_attach(dmabuf, dev, NULL, NULL);
 }
 EXPORT_SYMBOL_GPL(dma_buf_attach);

@ -766,8 +783,10 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)

 		dmabuf->ops->unmap_dma_buf(attach, attach->sgt, attach->dir);

-		if (dma_buf_is_dynamic(attach->dmabuf))
+		if (dma_buf_is_dynamic(attach->dmabuf)) {
+			dma_buf_unpin(attach);
 			dma_resv_unlock(attach->dmabuf->resv);
+		}
 	}

 	dma_resv_lock(dmabuf->resv, NULL);
@ -780,6 +799,44 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
 }
 EXPORT_SYMBOL_GPL(dma_buf_detach);

+/**
+ * dma_buf_pin - Lock down the DMA-buf
+ *
+ * @attach:	[in]	attachment which should be pinned
+ *
+ * Returns:
+ * 0 on success, negative error code on failure.
+ */
+int dma_buf_pin(struct dma_buf_attachment *attach)
+{
+	struct dma_buf *dmabuf = attach->dmabuf;
+	int ret = 0;
+
+	dma_resv_assert_held(dmabuf->resv);
+
+	if (dmabuf->ops->pin)
+		ret = dmabuf->ops->pin(attach);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(dma_buf_pin);
+
+/**
+ * dma_buf_unpin - Remove lock from DMA-buf
+ *
+ * @attach:	[in]	attachment which should be unpinned
+ */
+void dma_buf_unpin(struct dma_buf_attachment *attach)
+{
+	struct dma_buf *dmabuf = attach->dmabuf;
+
+	dma_resv_assert_held(dmabuf->resv);
+
+	if (dmabuf->ops->unpin)
+		dmabuf->ops->unpin(attach);
+}
+EXPORT_SYMBOL_GPL(dma_buf_unpin);
+
 /**
 * dma_buf_map_attachment - Returns the scatterlist table of the attachment;
 * mapped into _device_ address space. Is a wrapper for map_dma_buf() of the
@ -799,6 +856,7 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
 					enum dma_data_direction direction)
 {
 	struct sg_table *sg_table;
+	int r;

 	might_sleep();

@ -820,13 +878,23 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
 		return attach->sgt;
 	}

-	if (dma_buf_is_dynamic(attach->dmabuf))
+	if (dma_buf_is_dynamic(attach->dmabuf)) {
 		dma_resv_assert_held(attach->dmabuf->resv);
+		if (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
+			r = dma_buf_pin(attach);
+			if (r)
+				return ERR_PTR(r);
+		}
+	}

 	sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
 	if (!sg_table)
 		sg_table = ERR_PTR(-ENOMEM);

+	if (IS_ERR(sg_table) && dma_buf_is_dynamic(attach->dmabuf) &&
+	     !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY))
+		dma_buf_unpin(attach);
+
 	if (!IS_ERR(sg_table) && attach->dmabuf->ops->cache_sgt_mapping) {
 		attach->sgt = sg_table;
 		attach->dir = direction;
@ -865,9 +933,33 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
 		dma_resv_assert_held(attach->dmabuf->resv);

 	attach->dmabuf->ops->unmap_dma_buf(attach, sg_table, direction);
+
+	if (dma_buf_is_dynamic(attach->dmabuf) &&
+	    !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY))
+		dma_buf_unpin(attach);
 }
 EXPORT_SYMBOL_GPL(dma_buf_unmap_attachment);

+/**
+ * dma_buf_move_notify - notify attachments that DMA-buf is moving
+ *
+ * @dmabuf:	[in]	buffer which is moving
+ *
+ * Informs all attachmenst that they need to destroy and recreated all their
+ * mappings.
+ */
+void dma_buf_move_notify(struct dma_buf *dmabuf)
+{
+	struct dma_buf_attachment *attach;
+
+	dma_resv_assert_held(dmabuf->resv);
+
+	list_for_each_entry(attach, &dmabuf->attachments, node)
+		if (attach->importer_ops)
+			attach->importer_ops->move_notify(attach);
+}
+EXPORT_SYMBOL_GPL(dma_buf_move_notify);
+
 /**
 * DOC: cpu access
 *
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@ -54,9 +54,6 @@ config DRM_DEBUG_MM

 	  If in doubt, say "N".

-config DRM_EXPORT_FOR_TESTS
-	bool
-
 config DRM_DEBUG_SELFTEST
 	tristate "kselftests for DRM"
 	depends on DRM
@ -470,6 +467,9 @@ config DRM_SAVAGE

 endif # DRM_LEGACY

+config DRM_EXPORT_FOR_TESTS
+	bool
+
 # Separate option because drm_panel_orientation_quirks.c is shared with fbdev
 config DRM_PANEL_ORIENTATION_QUIRKS
 	tristate
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@ -28,6 +28,7 @@
 #include <linux/file.h>
 #include <linux/pagemap.h>
 #include <linux/sync_file.h>
+#include <linux/dma-buf.h>

 #include <drm/amdgpu_drm.h>
 #include <drm/drm_syncobj.h>
@ -415,7 +416,9 @@ static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
 	/* Don't move this buffer if we have depleted our allowance
 	 * to move it. Don't move anything if the threshold is zero.
 	 */
-	if (p->bytes_moved < p->bytes_moved_threshold) {
+	if (p->bytes_moved < p->bytes_moved_threshold &&
+	    (!bo->tbo.base.dma_buf ||
+	    list_empty(&bo->tbo.base.dma_buf->attachments))) {
 		if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 		    (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)) {
 			/* And don't move a CPU_ACCESS_REQUIRED BO to limited
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@ -222,6 +222,37 @@ static void amdgpu_dma_buf_detach(struct dma_buf *dmabuf,
 		bo->prime_shared_count--;
 }

+/**
+ * amdgpu_dma_buf_pin - &dma_buf_ops.pin implementation
+ *
+ * @attach: attachment to pin down
+ *
+ * Pin the BO which is backing the DMA-buf so that it can't move any more.
+ */
+static int amdgpu_dma_buf_pin(struct dma_buf_attachment *attach)
+{
+	struct drm_gem_object *obj = attach->dmabuf->priv;
+	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+
+	/* pin buffer into GTT */
+	return amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
+}
+
+/**
+ * amdgpu_dma_buf_unpin - &dma_buf_ops.unpin implementation
+ *
+ * @attach: attachment to unpin
+ *
+ * Unpin a previously pinned BO to make it movable again.
+ */
+static void amdgpu_dma_buf_unpin(struct dma_buf_attachment *attach)
+{
+	struct drm_gem_object *obj = attach->dmabuf->priv;
+	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+
+	amdgpu_bo_unpin(bo);
+}
+
 /**
 * amdgpu_dma_buf_map - &dma_buf_ops.map_dma_buf implementation
 * @attach: DMA-buf attachment
@ -244,9 +275,19 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach,
 	struct sg_table *sgt;
 	long r;

-	r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
-	if (r)
-		return ERR_PTR(r);
+	if (!bo->pin_count) {
+		/* move buffer into GTT */
+		struct ttm_operation_ctx ctx = { false, false };
+
+		amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT);
+		r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+		if (r)
+			return ERR_PTR(r);
+
+	} else if (!(amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type) &
+		     AMDGPU_GEM_DOMAIN_GTT)) {
+		return ERR_PTR(-EBUSY);
+	}

 	sgt = drm_prime_pages_to_sg(bo->tbo.ttm->pages, bo->tbo.num_pages);
 	if (IS_ERR(sgt))
@ -277,13 +318,9 @@ static void amdgpu_dma_buf_unmap(struct dma_buf_attachment *attach,
 				 struct sg_table *sgt,
 				 enum dma_data_direction dir)
 {
-	struct drm_gem_object *obj = attach->dmabuf->priv;
-	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
-
 	dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, dir);
 	sg_free_table(sgt);
 	kfree(sgt);
-	amdgpu_bo_unpin(bo);
 }

 /**
@ -327,9 +364,10 @@ static int amdgpu_dma_buf_begin_cpu_access(struct dma_buf *dma_buf,
 }

 const struct dma_buf_ops amdgpu_dmabuf_ops = {
-	.dynamic_mapping = true,
 	.attach = amdgpu_dma_buf_attach,
 	.detach = amdgpu_dma_buf_detach,
+	.pin = amdgpu_dma_buf_pin,
+	.unpin = amdgpu_dma_buf_unpin,
 	.map_dma_buf = amdgpu_dma_buf_map,
 	.unmap_dma_buf = amdgpu_dma_buf_unmap,
 	.release = drm_gem_dmabuf_release,
@ -412,6 +450,73 @@ error:
 	return ERR_PTR(ret);
 }

+/**
+ * amdgpu_dma_buf_move_notify - &attach.move_notify implementation
+ *
+ * @attach: the DMA-buf attachment
+ *
+ * Invalidate the DMA-buf attachment, making sure that the we re-create the
+ * mapping before the next use.
+ */
+static void
+amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach)
+{
+	struct drm_gem_object *obj = attach->importer_priv;
+	struct ww_acquire_ctx *ticket = dma_resv_locking_ctx(obj->resv);
+	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+	struct ttm_operation_ctx ctx = { false, false };
+	struct ttm_placement placement = {};
+	struct amdgpu_vm_bo_base *bo_base;
+	int r;
+
+	if (bo->tbo.mem.mem_type == TTM_PL_SYSTEM)
+		return;
+
+	r = ttm_bo_validate(&bo->tbo, &placement, &ctx);
+	if (r) {
+		DRM_ERROR("Failed to invalidate DMA-buf import (%d))\n", r);
+		return;
+	}
+
+	for (bo_base = bo->vm_bo; bo_base; bo_base = bo_base->next) {
+		struct amdgpu_vm *vm = bo_base->vm;
+		struct dma_resv *resv = vm->root.base.bo->tbo.base.resv;
+
+		if (ticket) {
+			/* When we get an error here it means that somebody
+			 * else is holding the VM lock and updating page tables
+			 * So we can just continue here.
+			 */
+			r = dma_resv_lock(resv, ticket);
+			if (r)
+				continue;
+
+		} else {
+			/* TODO: This is more problematic and we actually need
+			 * to allow page tables updates without holding the
+			 * lock.
+			 */
+			if (!dma_resv_trylock(resv))
+				continue;
+		}
+
+		r = amdgpu_vm_clear_freed(adev, vm, NULL);
+		if (!r)
+			r = amdgpu_vm_handle_moved(adev, vm);
+
+		if (r && r != -EBUSY)
+			DRM_ERROR("Failed to invalidate VM page tables (%d))\n",
+				  r);
+
+		dma_resv_unlock(resv);
+	}
+}
+
+static const struct dma_buf_attach_ops amdgpu_dma_buf_attach_ops = {
+	.move_notify = amdgpu_dma_buf_move_notify
+};
+
 /**
 * amdgpu_gem_prime_import - &drm_driver.gem_prime_import implementation
 * @dev: DRM device
@ -444,7 +549,8 @@ struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev,
 	if (IS_ERR(obj))
 		return obj;

-	attach = dma_buf_dynamic_attach(dma_buf, dev->dev, true);
+	attach = dma_buf_dynamic_attach(dma_buf, dev->dev,
+					&amdgpu_dma_buf_attach_ops, obj);
 	if (IS_ERR(attach)) {
 		drm_gem_object_put(obj);
 		return ERR_CAST(attach);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
@ -336,15 +336,12 @@ int amdgpu_fbdev_init(struct amdgpu_device *adev)
 	drm_fb_helper_prepare(adev->ddev, &rfbdev->helper,
 			&amdgpu_fb_helper_funcs);

-	ret = drm_fb_helper_init(adev->ddev, &rfbdev->helper,
-				 AMDGPUFB_CONN_LIMIT);
+	ret = drm_fb_helper_init(adev->ddev, &rfbdev->helper);
 	if (ret) {
 		kfree(rfbdev);
 		return ret;
 	}

-	drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
-
 	/* disable all the possible outputs/crtcs before entering KMS mode */
 	if (!amdgpu_device_has_dc_support(adev))
 		drm_helper_disable_unused_functions(adev->ddev);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@ -31,6 +31,7 @@
 */
 #include <linux/list.h>
 #include <linux/slab.h>
+#include <linux/dma-buf.h>

 #include <drm/amdgpu_drm.h>
 #include <drm/drm_cache.h>
@ -925,6 +926,9 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 		return 0;
 	}

+	if (bo->tbo.base.import_attach)
+		dma_buf_pin(bo->tbo.base.import_attach);
+
 	bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
 	/* force to pin into visible video ram */
 	if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
@ -1008,6 +1012,9 @@ int amdgpu_bo_unpin(struct amdgpu_bo *bo)

 	amdgpu_bo_subtract_pin_size(bo);

+	if (bo->tbo.base.import_attach)
+		dma_buf_unpin(bo->tbo.base.import_attach);
+
 	for (i = 0; i < bo->placement.num_placement; i++) {
 		bo->placements[i].lpfn = 0;
 		bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
@ -1274,6 +1281,10 @@ void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,

 	amdgpu_bo_kunmap(abo);

+	if (abo->tbo.base.dma_buf && !abo->tbo.base.import_attach &&
+	    bo->mem.mem_type != TTM_PL_SYSTEM)
+		dma_buf_move_notify(abo->tbo.base.dma_buf);
+
 	/* remember the eviction */
 	if (evict)
 		atomic64_inc(&adev->num_evictions);
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@ -440,9 +440,6 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 					struct drm_connector *connector)
 {
-	struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
-	struct drm_device *dev = master->base.dev;
-	struct amdgpu_device *adev = dev->dev_private;
 	struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);

 	DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
@ -458,21 +455,11 @@ static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 	}

 	drm_connector_unregister(connector);
-	if (adev->mode_info.rfbdev)
-		drm_fb_helper_remove_one_connector(&adev->mode_info.rfbdev->helper, connector);
 	drm_connector_put(connector);
 }

 static void dm_dp_mst_register_connector(struct drm_connector *connector)
 {
-	struct drm_device *dev = connector->dev;
-	struct amdgpu_device *adev = dev->dev_private;
-
-	if (adev->mode_info.rfbdev)
-		drm_fb_helper_add_one_connector(&adev->mode_info.rfbdev->helper, connector);
-	else
-		DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
-
 	drm_connector_register(connector);
 }

--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@ -129,18 +129,12 @@ int armada_fbdev_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, fbh, &armada_fb_helper_funcs);

-	ret = drm_fb_helper_init(dev, fbh, 1);
+	ret = drm_fb_helper_init(dev, fbh);
 	if (ret) {
 		DRM_ERROR("failed to initialize drm fb helper\n");
 		goto err_fb_helper;
 	}

-	ret = drm_fb_helper_single_add_all_connectors(fbh);
-	if (ret) {
-		DRM_ERROR("failed to add fb connectors\n");
-		goto err_fb_setup;
-	}
-
 	ret = drm_fb_helper_initial_config(fbh, 32);
 	if (ret) {
 		DRM_ERROR("failed to set initial config\n");
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@ -121,6 +121,7 @@ struct ast_private {
 		unsigned int next_index;
 	} cursor;

+	struct drm_encoder encoder;
 	struct drm_plane primary_plane;
 	struct drm_plane cursor_plane;

@ -238,13 +239,8 @@ struct ast_crtc {
 	u8 offset_x, offset_y;
 };

-struct ast_encoder {
-	struct drm_encoder base;
-};
-
 #define to_ast_crtc(x) container_of(x, struct ast_crtc, base)
 #define to_ast_connector(x) container_of(x, struct ast_connector, base)
-#define to_ast_encoder(x) container_of(x, struct ast_encoder, base)

 struct ast_vbios_stdtable {
 	u8 misc;
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@ -40,6 +40,7 @@
 #include <drm/drm_gem_vram_helper.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>

 #include "ast_drv.h"
 #include "ast_tables.h"
@ -957,28 +958,18 @@ err_kfree:
 * Encoder
 */

-static void ast_encoder_destroy(struct drm_encoder *encoder)
-{
-	drm_encoder_cleanup(encoder);
-	kfree(encoder);
-}
-
-static const struct drm_encoder_funcs ast_enc_funcs = {
-	.destroy = ast_encoder_destroy,
-};
-
 static int ast_encoder_init(struct drm_device *dev)
 {
-	struct ast_encoder *ast_encoder;
+	struct ast_private *ast = dev->dev_private;
+	struct drm_encoder *encoder = &ast->encoder;
+	int ret;

-	ast_encoder = kzalloc(sizeof(struct ast_encoder), GFP_KERNEL);
-	if (!ast_encoder)
-		return -ENOMEM;
+	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
+	if (ret)
+		return ret;

-	drm_encoder_init(dev, &ast_encoder->base, &ast_enc_funcs,
-			 DRM_MODE_ENCODER_DAC, NULL);
+	encoder->possible_crtcs = 1;

-	ast_encoder->base.possible_crtcs = 1;
 	return 0;
 }

--- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
@ -719,14 +719,18 @@ static int anx6345_i2c_probe(struct i2c_client *client,
 	/* 1.2V digital core power regulator  */
 	anx6345->dvdd12 = devm_regulator_get(dev, "dvdd12");
 	if (IS_ERR(anx6345->dvdd12)) {
-		DRM_ERROR("dvdd12-supply not found\n");
+		if (PTR_ERR(anx6345->dvdd12) != -EPROBE_DEFER)
+			DRM_ERROR("Failed to get dvdd12 supply (%ld)\n",
+				  PTR_ERR(anx6345->dvdd12));
 		return PTR_ERR(anx6345->dvdd12);
 	}

 	/* 2.5V digital core power regulator  */
 	anx6345->dvdd25 = devm_regulator_get(dev, "dvdd25");
 	if (IS_ERR(anx6345->dvdd25)) {
-		DRM_ERROR("dvdd25-supply not found\n");
+		if (PTR_ERR(anx6345->dvdd25) != -EPROBE_DEFER)
+			DRM_ERROR("Failed to get dvdd25 supply (%ld)\n",
+				  PTR_ERR(anx6345->dvdd25));
 		return PTR_ERR(anx6345->dvdd25);
 	}

--- a/drivers/gpu/drm/bridge/tc358764.c
+++ b/drivers/gpu/drm/bridge/tc358764.c
@ -375,7 +375,6 @@ static int tc358764_attach(struct drm_bridge *bridge,
 	drm_connector_attach_encoder(&ctx->connector, bridge->encoder);
 	drm_panel_attach(ctx->panel, &ctx->connector);
 	ctx->connector.funcs->reset(&ctx->connector);
-	drm_fb_helper_add_one_connector(drm->fb_helper, &ctx->connector);
 	drm_connector_register(&ctx->connector);

 	return 0;
@ -384,10 +383,8 @@ static int tc358764_attach(struct drm_bridge *bridge,
 static void tc358764_detach(struct drm_bridge *bridge)
 {
 	struct tc358764 *ctx = bridge_to_tc358764(bridge);
-	struct drm_device *drm = bridge->dev;

 	drm_connector_unregister(&ctx->connector);
-	drm_fb_helper_remove_one_connector(drm->fb_helper, &ctx->connector);
 	drm_panel_detach(ctx->panel);
 	ctx->panel = NULL;
 	drm_connector_put(&ctx->connector);
--- a/drivers/gpu/drm/drm_client.c
+++ b/drivers/gpu/drm/drm_client.c
@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+// SPDX-License-Identifier: GPL-2.0 or MIT
 /*
 * Copyright 2018 Noralf Trønnes
 */
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@ -736,6 +736,10 @@ static bool drm_dp_sideband_msg_build(struct drm_dp_sideband_msg_rx *msg,
 	if (msg->curchunk_idx >= msg->curchunk_len) {
 		/* do CRC */
 		crc4 = drm_dp_msg_data_crc4(msg->chunk, msg->curchunk_len - 1);
+		if (crc4 != msg->chunk[msg->curchunk_len - 1])
+			print_hex_dump(KERN_DEBUG, "wrong crc",
+				       DUMP_PREFIX_NONE, 16, 1,
+				       msg->chunk,  msg->curchunk_len, false);
 		/* copy chunk into bigger msg */
 		memcpy(&msg->msg[msg->curlen], msg->chunk, msg->curchunk_len - 1);
 		msg->curlen += msg->curchunk_len - 1;
@ -1035,7 +1039,8 @@ static bool drm_dp_sideband_parse_req(struct drm_dp_sideband_msg_rx *raw,
 	}
 }

-static int build_dpcd_write(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32 offset, u8 num_bytes, u8 *bytes)
+static void build_dpcd_write(struct drm_dp_sideband_msg_tx *msg,
+			     u8 port_num, u32 offset, u8 num_bytes, u8 *bytes)
 {
 	struct drm_dp_sideband_msg_req_body req;

@ -1045,17 +1050,14 @@ static int build_dpcd_write(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32
 	req.u.dpcd_write.num_bytes = num_bytes;
 	req.u.dpcd_write.bytes = bytes;
 	drm_dp_encode_sideband_req(&req, msg);
-
-	return 0;
 }

-static int build_link_address(struct drm_dp_sideband_msg_tx *msg)
+static void build_link_address(struct drm_dp_sideband_msg_tx *msg)
 {
 	struct drm_dp_sideband_msg_req_body req;

 	req.req_type = DP_LINK_ADDRESS;
 	drm_dp_encode_sideband_req(&req, msg);
-	return 0;
 }

 static int build_clear_payload_id_table(struct drm_dp_sideband_msg_tx *msg)
@ -1067,7 +1069,8 @@ static int build_clear_payload_id_table(struct drm_dp_sideband_msg_tx *msg)
 	return 0;
 }

-static int build_enum_path_resources(struct drm_dp_sideband_msg_tx *msg, int port_num)
+static int build_enum_path_resources(struct drm_dp_sideband_msg_tx *msg,
+				     int port_num)
 {
 	struct drm_dp_sideband_msg_req_body req;

@ -1078,10 +1081,11 @@ static int build_enum_path_resources(struct drm_dp_sideband_msg_tx *msg, int por
 	return 0;
 }

-static int build_allocate_payload(struct drm_dp_sideband_msg_tx *msg, int port_num,
-				  u8 vcpi, uint16_t pbn,
-				  u8 number_sdp_streams,
-				  u8 *sdp_stream_sink)
+static void build_allocate_payload(struct drm_dp_sideband_msg_tx *msg,
+				   int port_num,
+				   u8 vcpi, uint16_t pbn,
+				   u8 number_sdp_streams,
+				   u8 *sdp_stream_sink)
 {
 	struct drm_dp_sideband_msg_req_body req;
 	memset(&req, 0, sizeof(req));
@ -1094,11 +1098,10 @@ static int build_allocate_payload(struct drm_dp_sideband_msg_tx *msg, int port_n
 		   number_sdp_streams);
 	drm_dp_encode_sideband_req(&req, msg);
 	msg->path_msg = true;
-	return 0;
 }

-static int build_power_updown_phy(struct drm_dp_sideband_msg_tx *msg,
-				  int port_num, bool power_up)
+static void build_power_updown_phy(struct drm_dp_sideband_msg_tx *msg,
+				   int port_num, bool power_up)
 {
 	struct drm_dp_sideband_msg_req_body req;

@ -1110,7 +1113,6 @@ static int build_power_updown_phy(struct drm_dp_sideband_msg_tx *msg,
 	req.u.port_num.port_number = port_num;
 	drm_dp_encode_sideband_req(&req, msg);
 	msg->path_msg = true;
-	return 0;
 }

 static int drm_dp_mst_assign_payload_id(struct drm_dp_mst_topology_mgr *mgr,
@ -2073,29 +2075,24 @@ ssize_t drm_dp_mst_dpcd_write(struct drm_dp_aux *aux,
 				      offset, size, buffer);
 }

-static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid)
+static int drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid)
 {
-	int ret;
+	int ret = 0;

 	memcpy(mstb->guid, guid, 16);

 	if (!drm_dp_validate_guid(mstb->mgr, mstb->guid)) {
 		if (mstb->port_parent) {
-			ret = drm_dp_send_dpcd_write(
-					mstb->mgr,
-					mstb->port_parent,
-					DP_GUID,
-					16,
-					mstb->guid);
+			ret = drm_dp_send_dpcd_write(mstb->mgr,
+						     mstb->port_parent,
+						     DP_GUID, 16, mstb->guid);
 		} else {
-
-			ret = drm_dp_dpcd_write(
-					mstb->mgr->aux,
-					DP_GUID,
-					mstb->guid,
-					16);
+			ret = drm_dp_dpcd_write(mstb->mgr->aux,
+						DP_GUID, mstb->guid, 16);
 		}
 	}
+
+	return ret;
 }

 static void build_mst_prop_path(const struct drm_dp_mst_branch *mstb,
@ -2645,7 +2642,8 @@ static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr,
 	return false;
 }

-static int build_dpcd_read(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32 offset, u8 num_bytes)
+static void build_dpcd_read(struct drm_dp_sideband_msg_tx *msg,
+			    u8 port_num, u32 offset, u8 num_bytes)
 {
 	struct drm_dp_sideband_msg_req_body req;

@ -2654,8 +2652,6 @@ static int build_dpcd_read(struct drm_dp_sideband_msg_tx *msg, u8 port_num, u32
 	req.u.dpcd_read.dpcd_address = offset;
 	req.u.dpcd_read.num_bytes = num_bytes;
 	drm_dp_encode_sideband_req(&req, msg);
-
-	return 0;
 }

 static int drm_dp_send_sideband_msg(struct drm_dp_mst_topology_mgr *mgr,
@ -2881,7 +2877,7 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
 	struct drm_dp_sideband_msg_tx *txmsg;
 	struct drm_dp_link_address_ack_reply *reply;
 	struct drm_dp_mst_port *port, *tmp;
-	int i, len, ret, port_mask = 0;
+	int i, ret, port_mask = 0;
 	bool changed = false;

 	txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
@ -2889,7 +2885,7 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
 		return -ENOMEM;

 	txmsg->dst = mstb;
-	len = build_link_address(txmsg);
+	build_link_address(txmsg);

 	mstb->link_address_sent = true;
 	drm_dp_queue_down_tx(mgr, txmsg);
@ -2910,7 +2906,9 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
 	DRM_DEBUG_KMS("link address reply: %d\n", reply->nports);
 	drm_dp_dump_link_address(reply);

-	drm_dp_check_mstb_guid(mstb, reply->guid);
+	ret = drm_dp_check_mstb_guid(mstb, reply->guid);
+	if (ret)
+		goto out;

 	for (i = 0; i < reply->nports; i++) {
 		port_mask |= BIT(reply->ports[i].port_number);
@ -2951,14 +2949,14 @@ void drm_dp_send_clear_payload_id_table(struct drm_dp_mst_topology_mgr *mgr,
 					struct drm_dp_mst_branch *mstb)
 {
 	struct drm_dp_sideband_msg_tx *txmsg;
-	int len, ret;
+	int ret;

 	txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
 	if (!txmsg)
 		return;

 	txmsg->dst = mstb;
-	len = build_clear_payload_id_table(txmsg);
+	build_clear_payload_id_table(txmsg);

 	drm_dp_queue_down_tx(mgr, txmsg);

@ -2976,7 +2974,6 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
 {
 	struct drm_dp_enum_path_resources_ack_reply *path_res;
 	struct drm_dp_sideband_msg_tx *txmsg;
-	int len;
 	int ret;

 	txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
@ -2984,7 +2981,7 @@ drm_dp_send_enum_path_resources(struct drm_dp_mst_topology_mgr *mgr,
 		return -ENOMEM;

 	txmsg->dst = mstb;
-	len = build_enum_path_resources(txmsg, port->port_num);
+	build_enum_path_resources(txmsg, port->port_num);

 	drm_dp_queue_down_tx(mgr, txmsg);

@ -3068,7 +3065,7 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
 {
 	struct drm_dp_sideband_msg_tx *txmsg;
 	struct drm_dp_mst_branch *mstb;
-	int len, ret, port_num;
+	int ret, port_num;
 	u8 sinks[DRM_DP_MAX_SDP_STREAMS];
 	int i;

@ -3093,9 +3090,9 @@ static int drm_dp_payload_send_msg(struct drm_dp_mst_topology_mgr *mgr,
 		sinks[i] = i;

 	txmsg->dst = mstb;
-	len = build_allocate_payload(txmsg, port_num,
-				     id,
-				     pbn, port->num_sdp_streams, sinks);
+	build_allocate_payload(txmsg, port_num,
+			       id,
+			       pbn, port->num_sdp_streams, sinks);

 	drm_dp_queue_down_tx(mgr, txmsg);

@ -3124,7 +3121,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr,
 				 struct drm_dp_mst_port *port, bool power_up)
 {
 	struct drm_dp_sideband_msg_tx *txmsg;
-	int len, ret;
+	int ret;

 	port = drm_dp_mst_topology_get_port_validated(mgr, port);
 	if (!port)
@ -3137,7 +3134,7 @@ int drm_dp_send_power_updown_phy(struct drm_dp_mst_topology_mgr *mgr,
 	}

 	txmsg->dst = port->parent;
-	len = build_power_updown_phy(txmsg, port->port_num, power_up);
+	build_power_updown_phy(txmsg, port->port_num, power_up);
 	drm_dp_queue_down_tx(mgr, txmsg);

 	ret = drm_dp_mst_wait_tx_reply(port->parent, txmsg);
@ -3359,7 +3356,6 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
 				 struct drm_dp_mst_port *port,
 				 int offset, int size, u8 *bytes)
 {
-	int len;
 	int ret = 0;
 	struct drm_dp_sideband_msg_tx *txmsg;
 	struct drm_dp_mst_branch *mstb;
@ -3374,7 +3370,7 @@ static int drm_dp_send_dpcd_read(struct drm_dp_mst_topology_mgr *mgr,
 		goto fail_put;
 	}

-	len = build_dpcd_read(txmsg, port->port_num, offset, size);
+	build_dpcd_read(txmsg, port->port_num, offset, size);
 	txmsg->dst = port->parent;

 	drm_dp_queue_down_tx(mgr, txmsg);
@ -3412,7 +3408,6 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
 				  struct drm_dp_mst_port *port,
 				  int offset, int size, u8 *bytes)
 {
-	int len;
 	int ret;
 	struct drm_dp_sideband_msg_tx *txmsg;
 	struct drm_dp_mst_branch *mstb;
@ -3427,7 +3422,7 @@ static int drm_dp_send_dpcd_write(struct drm_dp_mst_topology_mgr *mgr,
 		goto fail_put;
 	}

-	len = build_dpcd_write(txmsg, port->port_num, offset, size, bytes);
+	build_dpcd_write(txmsg, port->port_num, offset, size, bytes);
 	txmsg->dst = mstb;

 	drm_dp_queue_down_tx(mgr, txmsg);
@ -3673,7 +3668,12 @@ int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr,
 		DRM_DEBUG_KMS("dpcd read failed - undocked during suspend?\n");
 		goto out_fail;
 	}
-	drm_dp_check_mstb_guid(mgr->mst_primary, guid);
+
+	ret = drm_dp_check_mstb_guid(mgr->mst_primary, guid);
+	if (ret) {
+		DRM_DEBUG_KMS("check mstb failed - undocked during suspend?\n");
+		goto out_fail;
+	}

 	/*
 	 * For the final step of resuming the topology, we need to bring the
@ -4615,15 +4615,34 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
 		int ret;

 		ret = drm_dp_dpcd_read(mgr->aux, DP_DPCD_REV, buf, DP_RECEIVER_CAP_SIZE);
+		if (ret) {
+			seq_printf(m, "dpcd read failed\n");
+			goto out;
+		}
 		seq_printf(m, "dpcd: %*ph\n", DP_RECEIVER_CAP_SIZE, buf);
+
 		ret = drm_dp_dpcd_read(mgr->aux, DP_FAUX_CAP, buf, 2);
+		if (ret) {
+			seq_printf(m, "faux/mst read failed\n");
+			goto out;
+		}
 		seq_printf(m, "faux/mst: %*ph\n", 2, buf);
+
 		ret = drm_dp_dpcd_read(mgr->aux, DP_MSTM_CTRL, buf, 1);
+		if (ret) {
+			seq_printf(m, "mst ctrl read failed\n");
+			goto out;
+		}
 		seq_printf(m, "mst ctrl: %*ph\n", 1, buf);

 		/* dump the standard OUI branch header */
 		ret = drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_BRANCH_OUI_HEADER_SIZE);
+		if (ret) {
+			seq_printf(m, "branch oui read failed\n");
+			goto out;
+		}
 		seq_printf(m, "branch oui: %*phN devid: ", 3, buf);
+
 		for (i = 0x3; i < 0x8 && buf[i]; i++)
 			seq_printf(m, "%c", buf[i]);
 		seq_printf(m, " revision: hw: %x.%x sw: %x.%x\n",
@ -4632,6 +4651,7 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
 			seq_printf(m, "payload table: %*ph\n", DP_PAYLOAD_TABLE_SIZE, buf);
 	}

+out:
 	mutex_unlock(&mgr->lock);

 }
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@ -450,7 +450,6 @@ EXPORT_SYMBOL(drm_fb_helper_prepare);
 * drm_fb_helper_init - initialize a &struct drm_fb_helper
 * @dev: drm device
 * @fb_helper: driver-allocated fbdev helper structure to initialize
- * @max_conn_count: max connector count (not used)
 *
 * This allocates the structures for the fbdev helper with the given limits.
 * Note that this won't yet touch the hardware (through the driver interfaces)
@ -463,8 +462,7 @@ EXPORT_SYMBOL(drm_fb_helper_prepare);
 * Zero if everything went ok, nonzero otherwise.
 */
 int drm_fb_helper_init(struct drm_device *dev,
-		       struct drm_fb_helper *fb_helper,
-		       int max_conn_count)
+		       struct drm_fb_helper *fb_helper)
 {
 	int ret;

@ -2125,7 +2123,7 @@ static int drm_fbdev_client_hotplug(struct drm_client_dev *client)

 	drm_fb_helper_prepare(dev, fb_helper, &drm_fb_helper_generic_funcs);

-	ret = drm_fb_helper_init(dev, fb_helper, 0);
+	ret = drm_fb_helper_init(dev, fb_helper);
 	if (ret)
 		goto err;

--- a/drivers/gpu/drm/drm_hdcp.c
+++ b/drivers/gpu/drm/drm_hdcp.c
@ -23,14 +23,6 @@

 #include "drm_internal.h"

-static struct hdcp_srm {
-	u32 revoked_ksv_cnt;
-	u8 *revoked_ksv_list;
-
-	/* Mutex to protect above struct member */
-	struct mutex mutex;
-} *srm_data;
-
 static inline void drm_hdcp_print_ksv(const u8 *ksv)
 {
 	DRM_DEBUG("\t%#02x, %#02x, %#02x, %#02x, %#02x\n",
@ -60,11 +52,11 @@ static u32 drm_hdcp_get_revoked_ksv_count(const u8 *buf, u32 vrls_length)
 	return ksv_count;
 }

-static u32 drm_hdcp_get_revoked_ksvs(const u8 *buf, u8 *revoked_ksv_list,
+static u32 drm_hdcp_get_revoked_ksvs(const u8 *buf, u8 **revoked_ksv_list,
 				     u32 vrls_length)
 {
-	u32 parsed_bytes = 0, ksv_count = 0;
 	u32 vrl_ksv_cnt, vrl_ksv_sz, vrl_idx = 0;
+	u32 parsed_bytes = 0, ksv_count = 0;

 	do {
 		vrl_ksv_cnt = *buf;
@ -74,10 +66,10 @@ static u32 drm_hdcp_get_revoked_ksvs(const u8 *buf, u8 *revoked_ksv_list,

 		DRM_DEBUG("vrl: %d, Revoked KSVs: %d\n", vrl_idx++,
 			  vrl_ksv_cnt);
-		memcpy(revoked_ksv_list, buf, vrl_ksv_sz);
+		memcpy((*revoked_ksv_list) + (ksv_count * DRM_HDCP_KSV_LEN),
+		       buf, vrl_ksv_sz);

 		ksv_count += vrl_ksv_cnt;
-		revoked_ksv_list += vrl_ksv_sz;
 		buf += vrl_ksv_sz;

 		parsed_bytes += (vrl_ksv_sz + 1);
@ -91,7 +83,8 @@ static inline u32 get_vrl_length(const u8 *buf)
 	return drm_hdcp_be24_to_cpu(buf);
 }

-static int drm_hdcp_parse_hdcp1_srm(const u8 *buf, size_t count)
+static int drm_hdcp_parse_hdcp1_srm(const u8 *buf, size_t count,
+				    u8 **revoked_ksv_list, u32 *revoked_ksv_cnt)
 {
 	struct hdcp_srm_header *header;
 	u32 vrl_length, ksv_count;
@ -131,29 +124,28 @@ static int drm_hdcp_parse_hdcp1_srm(const u8 *buf, size_t count)
 	ksv_count = drm_hdcp_get_revoked_ksv_count(buf, vrl_length);
 	if (!ksv_count) {
 		DRM_DEBUG("Revoked KSV count is 0\n");
-		return count;
+		return 0;
 	}

-	kfree(srm_data->revoked_ksv_list);
-	srm_data->revoked_ksv_list = kcalloc(ksv_count, DRM_HDCP_KSV_LEN,
-					     GFP_KERNEL);
-	if (!srm_data->revoked_ksv_list) {
+	*revoked_ksv_list = kcalloc(ksv_count, DRM_HDCP_KSV_LEN, GFP_KERNEL);
+	if (!*revoked_ksv_list) {
 		DRM_ERROR("Out of Memory\n");
 		return -ENOMEM;
 	}

-	if (drm_hdcp_get_revoked_ksvs(buf, srm_data->revoked_ksv_list,
+	if (drm_hdcp_get_revoked_ksvs(buf, revoked_ksv_list,
 				      vrl_length) != ksv_count) {
-		srm_data->revoked_ksv_cnt = 0;
-		kfree(srm_data->revoked_ksv_list);
+		*revoked_ksv_cnt = 0;
+		kfree(*revoked_ksv_list);
 		return -EINVAL;
 	}

-	srm_data->revoked_ksv_cnt = ksv_count;
-	return count;
+	*revoked_ksv_cnt = ksv_count;
+	return 0;
 }

-static int drm_hdcp_parse_hdcp2_srm(const u8 *buf, size_t count)
+static int drm_hdcp_parse_hdcp2_srm(const u8 *buf, size_t count,
+				    u8 **revoked_ksv_list, u32 *revoked_ksv_cnt)
 {
 	struct hdcp_srm_header *header;
 	u32 vrl_length, ksv_count, ksv_sz;
@ -195,13 +187,11 @@ static int drm_hdcp_parse_hdcp2_srm(const u8 *buf, size_t count)
 	ksv_count = (*buf << 2) | DRM_HDCP_2_KSV_COUNT_2_LSBITS(*(buf + 1));
 	if (!ksv_count) {
 		DRM_DEBUG("Revoked KSV count is 0\n");
-		return count;
+		return 0;
 	}

-	kfree(srm_data->revoked_ksv_list);
-	srm_data->revoked_ksv_list = kcalloc(ksv_count, DRM_HDCP_KSV_LEN,
-					     GFP_KERNEL);
-	if (!srm_data->revoked_ksv_list) {
+	*revoked_ksv_list = kcalloc(ksv_count, DRM_HDCP_KSV_LEN, GFP_KERNEL);
+	if (!*revoked_ksv_list) {
 		DRM_ERROR("Out of Memory\n");
 		return -ENOMEM;
 	}
@ -210,10 +200,10 @@ static int drm_hdcp_parse_hdcp2_srm(const u8 *buf, size_t count)
 	buf += DRM_HDCP_2_NO_OF_DEV_PLUS_RESERVED_SZ;

 	DRM_DEBUG("Revoked KSVs: %d\n", ksv_count);
-	memcpy(srm_data->revoked_ksv_list, buf, ksv_sz);
+	memcpy(*revoked_ksv_list, buf, ksv_sz);

-	srm_data->revoked_ksv_cnt = ksv_count;
-	return count;
+	*revoked_ksv_cnt = ksv_count;
+	return 0;
 }

 static inline bool is_srm_version_hdcp1(const u8 *buf)
@ -226,22 +216,27 @@ static inline bool is_srm_version_hdcp2(const u8 *buf)
 	return *buf == (u8)(DRM_HDCP_2_SRM_ID << 4 | DRM_HDCP_2_INDICATOR);
 }

-static void drm_hdcp_srm_update(const u8 *buf, size_t count)
+static int drm_hdcp_srm_update(const u8 *buf, size_t count,
+			       u8 **revoked_ksv_list, u32 *revoked_ksv_cnt)
 {
 	if (count < sizeof(struct hdcp_srm_header))
-		return;
+		return -EINVAL;

 	if (is_srm_version_hdcp1(buf))
-		drm_hdcp_parse_hdcp1_srm(buf, count);
+		return drm_hdcp_parse_hdcp1_srm(buf, count, revoked_ksv_list,
+						revoked_ksv_cnt);
 	else if (is_srm_version_hdcp2(buf))
-		drm_hdcp_parse_hdcp2_srm(buf, count);
+		return drm_hdcp_parse_hdcp2_srm(buf, count, revoked_ksv_list,
+						revoked_ksv_cnt);
+	else
+		return -EINVAL;
 }

-static void drm_hdcp_request_srm(struct drm_device *drm_dev)
+static int drm_hdcp_request_srm(struct drm_device *drm_dev,
+				u8 **revoked_ksv_list, u32 *revoked_ksv_cnt)
 {
 	char fw_name[36] = "display_hdcp_srm.bin";
 	const struct firmware *fw;
-
 	int ret;

 	ret = request_firmware_direct(&fw, (const char *)fw_name,
@ -250,10 +245,12 @@ static void drm_hdcp_request_srm(struct drm_device *drm_dev)
 		goto exit;

 	if (fw->size && fw->data)
-		drm_hdcp_srm_update(fw->data, fw->size);
+		ret = drm_hdcp_srm_update(fw->data, fw->size, revoked_ksv_list,
+					  revoked_ksv_cnt);

 exit:
 	release_firmware(fw);
+	return ret;
 }

 /**
@ -279,71 +276,34 @@ exit:
 * https://www.digital-cp.com/sites/default/files/specifications/HDCP%20on%20HDMI%20Specification%20Rev2_2_Final1.pdf
 *
 * Returns:
- * TRUE on any of the KSV is revoked, else FALSE.
+ * Count of the revoked KSVs or -ve error number incase of the failure.
 */
-bool drm_hdcp_check_ksvs_revoked(struct drm_device *drm_dev, u8 *ksvs,
-				 u32 ksv_count)
+int drm_hdcp_check_ksvs_revoked(struct drm_device *drm_dev, u8 *ksvs,
+				u32 ksv_count)
 {
-	u32 rev_ksv_cnt, cnt, i, j;
-	u8 *rev_ksv_list;
+	u32 revoked_ksv_cnt = 0, i, j;
+	u8 *revoked_ksv_list = NULL;
+	int ret = 0;

-	if (!srm_data)
-		return false;
+	ret = drm_hdcp_request_srm(drm_dev, &revoked_ksv_list,
+				   &revoked_ksv_cnt);

-	mutex_lock(&srm_data->mutex);
-	drm_hdcp_request_srm(drm_dev);
+	/* revoked_ksv_cnt will be zero when above function failed */
+	for (i = 0; i < revoked_ksv_cnt; i++)
+		for  (j = 0; j < ksv_count; j++)
+			if (!memcmp(&ksvs[j * DRM_HDCP_KSV_LEN],
+				    &revoked_ksv_list[i * DRM_HDCP_KSV_LEN],
+				    DRM_HDCP_KSV_LEN)) {
+				DRM_DEBUG("Revoked KSV is ");
+				drm_hdcp_print_ksv(&ksvs[j * DRM_HDCP_KSV_LEN]);
+				ret++;
+			}

-	rev_ksv_cnt = srm_data->revoked_ksv_cnt;
-	rev_ksv_list = srm_data->revoked_ksv_list;
-
-	/* If the Revoked ksv list is empty */
-	if (!rev_ksv_cnt || !rev_ksv_list) {
-		mutex_unlock(&srm_data->mutex);
-		return false;
-	}
-
-	for  (cnt = 0; cnt < ksv_count; cnt++) {
-		rev_ksv_list = srm_data->revoked_ksv_list;
-		for (i = 0; i < rev_ksv_cnt; i++) {
-			for (j = 0; j < DRM_HDCP_KSV_LEN; j++)
-				if (ksvs[j] != rev_ksv_list[j]) {
-					break;
-				} else if (j == (DRM_HDCP_KSV_LEN - 1)) {
-					DRM_DEBUG("Revoked KSV is ");
-					drm_hdcp_print_ksv(ksvs);
-					mutex_unlock(&srm_data->mutex);
-					return true;
-				}
-			/* Move the offset to next KSV in the revoked list */
-			rev_ksv_list += DRM_HDCP_KSV_LEN;
-		}
-
-		/* Iterate to next ksv_offset */
-		ksvs += DRM_HDCP_KSV_LEN;
-	}
-	mutex_unlock(&srm_data->mutex);
-	return false;
+	kfree(revoked_ksv_list);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(drm_hdcp_check_ksvs_revoked);

-int drm_setup_hdcp_srm(struct class *drm_class)
-{
-	srm_data = kzalloc(sizeof(*srm_data), GFP_KERNEL);
-	if (!srm_data)
-		return -ENOMEM;
-	mutex_init(&srm_data->mutex);
-
-	return 0;
-}
-
-void drm_teardown_hdcp_srm(struct class *drm_class)
-{
-	if (srm_data) {
-		kfree(srm_data->revoked_ksv_list);
-		kfree(srm_data);
-	}
-}
-
 static struct drm_prop_enum_list drm_cp_enum_list[] = {
 	{ DRM_MODE_CONTENT_PROTECTION_UNDESIRED, "Undesired" },
 	{ DRM_MODE_CONTENT_PROTECTION_DESIRED, "Desired" },
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@ -236,7 +236,3 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
 void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
 				const struct drm_framebuffer *fb);
 int drm_framebuffer_debugfs_init(struct drm_minor *minor);
-
-/* drm_hdcp.c */
-int drm_setup_hdcp_srm(struct class *drm_class);
-void drm_teardown_hdcp_srm(struct class *drm_class);
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@ -45,6 +45,7 @@
 #include <linux/export.h>
 #include <linux/interval_tree_generic.h>
 #include <linux/seq_file.h>
+#include <linux/sched/signal.h>
 #include <linux/slab.h>
 #include <linux/stacktrace.h>

@ -366,6 +367,11 @@ next_hole(struct drm_mm *mm,
 	  struct drm_mm_node *node,
 	  enum drm_mm_insert_mode mode)
 {
+	/* Searching is slow; check if we ran out of time/patience */
+	cond_resched();
+	if (fatal_signal_pending(current))
+		return NULL;
+
 	switch (mode) {
 	default:
 	case DRM_MM_INSERT_BEST:
@ -557,7 +563,7 @@ int drm_mm_insert_node_in_range(struct drm_mm * const mm,
 		return 0;
 	}

-	return -ENOSPC;
+	return signal_pending(current) ? -ERESTARTSYS : -ENOSPC;
 }
 EXPORT_SYMBOL(drm_mm_insert_node_in_range);

--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@ -75,7 +75,6 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t ali

 	return dmah;
 }
-
 EXPORT_SYMBOL(drm_pci_alloc);

 /**
@ -167,6 +166,18 @@ int drm_irq_by_busid(struct drm_device *dev, void *data,
 	return drm_pci_irq_by_busid(dev, p);
 }

+void drm_pci_agp_destroy(struct drm_device *dev)
+{
+	if (dev->agp) {
+		arch_phys_wc_del(dev->agp->agp_mtrr);
+		drm_legacy_agp_clear(dev);
+		kfree(dev->agp);
+		dev->agp = NULL;
+	}
+}
+
+#ifdef CONFIG_DRM_LEGACY
+
 static void drm_pci_agp_init(struct drm_device *dev)
 {
 	if (drm_core_check_feature(dev, DRIVER_USE_AGP)) {
@ -181,33 +192,9 @@ static void drm_pci_agp_init(struct drm_device *dev)
 	}
 }

-void drm_pci_agp_destroy(struct drm_device *dev)
-{
-	if (dev->agp) {
-		arch_phys_wc_del(dev->agp->agp_mtrr);
-		drm_legacy_agp_clear(dev);
-		kfree(dev->agp);
-		dev->agp = NULL;
-	}
-}
-
-/**
- * drm_get_pci_dev - Register a PCI device with the DRM subsystem
- * @pdev: PCI device
- * @ent: entry from the PCI ID table that matches @pdev
- * @driver: DRM device driver
- *
- * Attempt to gets inter module "drm" information. If we are first
- * then register the character device and inter module information.
- * Try and register, if we fail to register, backout previous work.
- *
- * NOTE: This function is deprecated, please use drm_dev_alloc() and
- * drm_dev_register() instead and remove your &drm_driver.load callback.
- *
- * Return: 0 on success or a negative error code on failure.
- */
-int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
-		    struct drm_driver *driver)
+static int drm_get_pci_dev(struct pci_dev *pdev,
+			   const struct pci_device_id *ent,
+			   struct drm_driver *driver)
 {
 	struct drm_device *dev;
 	int ret;
@ -250,9 +237,6 @@ err_free:
 	drm_dev_put(dev);
 	return ret;
 }
-EXPORT_SYMBOL(drm_get_pci_dev);
-
-#ifdef CONFIG_DRM_LEGACY

 /**
 * drm_legacy_pci_init - shadow-attach a legacy DRM PCI driver
--- a/drivers/gpu/drm/drm_scatter.c
+++ b/drivers/gpu/drm/drm_scatter.c
@ -99,6 +99,9 @@ int drm_legacy_sg_alloc(struct drm_device *dev, void *data,
 	if (!drm_core_check_feature(dev, DRIVER_SG))
 		return -EOPNOTSUPP;

+	if (request->size > SIZE_MAX - PAGE_SIZE)
+		return -EINVAL;
+
 	if (dev->sg)
 		return -EINVAL;

--- a/drivers/gpu/drm/drm_simple_kms_helper.c
+++ b/drivers/gpu/drm/drm_simple_kms_helper.c
@ -26,12 +26,51 @@
 * entity. Some flexibility for code reuse is provided through a separately
 * allocated &drm_connector object and supporting optional &drm_bridge
 * encoder drivers.
+ *
+ * Many drivers require only a very simple encoder that fulfills the minimum
+ * requirements of the display pipeline and does not add additional
+ * functionality. The function drm_simple_encoder_init() provides an
+ * implementation of such an encoder.
 */

-static const struct drm_encoder_funcs drm_simple_kms_encoder_funcs = {
+static const struct drm_encoder_funcs drm_simple_encoder_funcs_cleanup = {
 	.destroy = drm_encoder_cleanup,
 };

+/**
+ * drm_simple_encoder_init - Initialize a preallocated encoder with
+ *                           basic functionality.
+ * @dev: drm device
+ * @encoder: the encoder to initialize
+ * @encoder_type: user visible type of the encoder
+ *
+ * Initialises a preallocated encoder that has no further functionality.
+ * Settings for possible CRTC and clones are left to their initial values.
+ * The encoder will be cleaned up automatically as part of the mode-setting
+ * cleanup.
+ *
+ * The caller of drm_simple_encoder_init() is responsible for freeing
+ * the encoder's memory after the encoder has been cleaned up. At the
+ * moment this only works reliably if the encoder data structure is
+ * stored in the device structure. Free the encoder's memory as part of
+ * the device release function.
+ *
+ * FIXME: Later improvements to DRM's resource management may allow for
+ *        an automated kfree() of the encoder's memory.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_simple_encoder_init(struct drm_device *dev,
+			    struct drm_encoder *encoder,
+			    int encoder_type)
+{
+	return drm_encoder_init(dev, encoder,
+				&drm_simple_encoder_funcs_cleanup,
+				encoder_type, NULL);
+}
+EXPORT_SYMBOL(drm_simple_encoder_init);
+
 static enum drm_mode_status
 drm_simple_kms_crtc_mode_valid(struct drm_crtc *crtc,
 			       const struct drm_display_mode *mode)
@ -288,8 +327,7 @@ int drm_simple_display_pipe_init(struct drm_device *dev,
 		return ret;

 	encoder->possible_crtcs = drm_crtc_mask(crtc);
-	ret = drm_encoder_init(dev, encoder, &drm_simple_kms_encoder_funcs,
-			       DRM_MODE_ENCODER_NONE, NULL);
+	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_NONE);
 	if (ret || !connector)
 		return ret;

--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@ -85,7 +85,6 @@ int drm_sysfs_init(void)
 	}

 	drm_class->devnode = drm_devnode;
-	drm_setup_hdcp_srm(drm_class);
 	return 0;
 }

@ -98,7 +97,6 @@ void drm_sysfs_destroy(void)
 {
 	if (IS_ERR_OR_NULL(drm_class))
 		return;
-	drm_teardown_hdcp_srm(drm_class);
 	class_remove_file(drm_class, &class_attr_version.attr);
 	class_destroy(drm_class);
 	drm_class = NULL;
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@ -592,8 +592,7 @@ EXPORT_SYMBOL(drm_calc_timestamping_constants);
 /**
 * drm_crtc_vblank_helper_get_vblank_timestamp_internal - precise vblank
 *                                                        timestamp helper
- * @dev: DRM device
- * @pipe: index of CRTC whose vblank timestamp to retrieve
+ * @crtc: CRTC whose vblank timestamp to retrieve
 * @max_error: Desired maximum allowable error in timestamps (nanosecs)
 *             On return contains true maximum error of timestamp
 * @vblank_time: Pointer to time which should receive the timestamp
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@ -1514,7 +1514,6 @@ static int exynos_dsi_create_connector(struct drm_encoder *encoder)
 		return 0;

 	connector->funcs->reset(connector);
-	drm_fb_helper_add_one_connector(drm->fb_helper, connector);
 	drm_connector_register(connector);
 	return 0;
 }
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@ -200,21 +200,13 @@ int exynos_drm_fbdev_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, helper, &exynos_drm_fb_helper_funcs);

-	ret = drm_fb_helper_init(dev, helper, MAX_CONNECTOR);
+	ret = drm_fb_helper_init(dev, helper);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev->dev,
 			      "failed to initialize drm fb helper.\n");
 		goto err_init;
 	}

-	ret = drm_fb_helper_single_add_all_connectors(helper);
-	if (ret < 0) {
-		DRM_DEV_ERROR(dev->dev,
-			      "failed to register drm_fb_helper_connector.\n");
-		goto err_setup;
-
-	}
-
 	ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev->dev,
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@ -513,14 +513,10 @@ int psb_fbdev_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, fb_helper, &psb_fb_helper_funcs);

-	ret = drm_fb_helper_init(dev, fb_helper, INTELFB_CONN_LIMIT);
+	ret = drm_fb_helper_init(dev, fb_helper);
 	if (ret)
 		goto free;

-	ret = drm_fb_helper_single_add_all_connectors(fb_helper);
-	if (ret)
-		goto fini;
-
 	/* disable all the possible outputs/crtcs before entering KMS mode */
 	drm_helper_disable_unused_functions(dev);

--- a/drivers/gpu/drm/gma500/intel_bios.h
+++ b/drivers/gpu/drm/gma500/intel_bios.h
@ -227,7 +227,7 @@ struct bdb_general_definitions {
 	 * number = (block_size - sizeof(bdb_general_definitions))/
 	 *	     sizeof(child_device_config);
 	 */
-	struct child_device_config devices[0];
+	struct child_device_config devices[];
 };

 struct bdb_lvds_options {
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@ -721,27 +721,15 @@ err:

 static void intel_dp_register_mst_connector(struct drm_connector *connector)
 {
-	struct drm_i915_private *dev_priv = to_i915(connector->dev);
-
-	if (dev_priv->fbdev)
-		drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper,
-						connector);
-
 	drm_connector_register(connector);
 }

 static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 					   struct drm_connector *connector)
 {
-	struct drm_i915_private *dev_priv = to_i915(connector->dev);
-
 	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, connector->name);
 	drm_connector_unregister(connector);

-	if (dev_priv->fbdev)
-		drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper,
-						   connector);
-
 	drm_connector_put(connector);
 }

--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@ -453,7 +453,7 @@ int intel_fbdev_init(struct drm_device *dev)
 	if (!intel_fbdev_init_bios(dev, ifbdev))
 		ifbdev->preferred_bpp = 32;

-	ret = drm_fb_helper_init(dev, &ifbdev->helper, 4);
+	ret = drm_fb_helper_init(dev, &ifbdev->helper);
 	if (ret) {
 		kfree(ifbdev);
 		return ret;
@ -462,8 +462,6 @@ int intel_fbdev_init(struct drm_device *dev)
 	dev_priv->fbdev = ifbdev;
 	INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker);

-	drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
-
 	return 0;
 }

--- a/drivers/gpu/drm/mgag200/mgag200_drv.h
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
@ -95,7 +95,6 @@
 #define MATROX_DPMS_CLEARED (-1)

 #define to_mga_crtc(x) container_of(x, struct mga_crtc, base)
-#define to_mga_encoder(x) container_of(x, struct mga_encoder, base)
 #define to_mga_connector(x) container_of(x, struct mga_connector, base)

 struct mga_crtc {
@ -110,12 +109,6 @@ struct mga_mode_info {
 	struct mga_crtc *crtc;
 };

-struct mga_encoder {
-	struct drm_encoder base;
-	int last_dpms;
-};
-
-
 struct mga_i2c_chan {
 	struct i2c_adapter adapter;
 	struct drm_device *dev;
@ -185,6 +178,8 @@ struct mga_device {

 	/* SE model number stored in reg 0x1e24 */
 	u32 unique_rev_id;
+
+	struct drm_encoder encoder;
 };

 static inline enum mga_type
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@ -15,6 +15,7 @@
 #include <drm/drm_fourcc.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>

 #include "mgag200_drv.h"

@ -1449,76 +1450,6 @@ static void mga_crtc_init(struct mga_device *mdev)
 	drm_crtc_helper_add(&mga_crtc->base, &mga_helper_funcs);
 }

-/*
- * The encoder comes after the CRTC in the output pipeline, but before
- * the connector. It's responsible for ensuring that the digital
- * stream is appropriately converted into the output format. Setup is
- * very simple in this case - all we have to do is inform qemu of the
- * colour depth in order to ensure that it displays appropriately
- */
-
-/*
- * These functions are analagous to those in the CRTC code, but are intended
- * to handle any encoder-specific limitations
- */
-static void mga_encoder_mode_set(struct drm_encoder *encoder,
-				struct drm_display_mode *mode,
-				struct drm_display_mode *adjusted_mode)
-{
-
-}
-
-static void mga_encoder_dpms(struct drm_encoder *encoder, int state)
-{
-	return;
-}
-
-static void mga_encoder_prepare(struct drm_encoder *encoder)
-{
-}
-
-static void mga_encoder_commit(struct drm_encoder *encoder)
-{
-}
-
-static void mga_encoder_destroy(struct drm_encoder *encoder)
-{
-	struct mga_encoder *mga_encoder = to_mga_encoder(encoder);
-	drm_encoder_cleanup(encoder);
-	kfree(mga_encoder);
-}
-
-static const struct drm_encoder_helper_funcs mga_encoder_helper_funcs = {
-	.dpms = mga_encoder_dpms,
-	.mode_set = mga_encoder_mode_set,
-	.prepare = mga_encoder_prepare,
-	.commit = mga_encoder_commit,
-};
-
-static const struct drm_encoder_funcs mga_encoder_encoder_funcs = {
-	.destroy = mga_encoder_destroy,
-};
-
-static struct drm_encoder *mga_encoder_init(struct drm_device *dev)
-{
-	struct drm_encoder *encoder;
-	struct mga_encoder *mga_encoder;
-
-	mga_encoder = kzalloc(sizeof(struct mga_encoder), GFP_KERNEL);
-	if (!mga_encoder)
-		return NULL;
-
-	encoder = &mga_encoder->base;
-	encoder->possible_crtcs = 0x1;
-
-	drm_encoder_init(dev, encoder, &mga_encoder_encoder_funcs,
-			 DRM_MODE_ENCODER_DAC, NULL);
-	drm_encoder_helper_add(encoder, &mga_encoder_helper_funcs);
-
-	return encoder;
-}
-
-
 static int mga_vga_get_modes(struct drm_connector *connector)
 {
 	struct mga_connector *mga_connector = to_mga_connector(connector);
@ -1686,8 +1617,9 @@ static struct drm_connector *mga_vga_init(struct drm_device *dev)

 int mgag200_modeset_init(struct mga_device *mdev)
 {
-	struct drm_encoder *encoder;
+	struct drm_encoder *encoder = &mdev->encoder;
 	struct drm_connector *connector;
+	int ret;

 	mdev->mode_info.mode_config_initialized = true;

@ -1698,11 +1630,15 @@ int mgag200_modeset_init(struct mga_device *mdev)

 	mga_crtc_init(mdev);

-	encoder = mga_encoder_init(mdev->dev);
-	if (!encoder) {
-		DRM_ERROR("mga_encoder_init failed\n");
-		return -1;
+	ret = drm_simple_encoder_init(mdev->dev, encoder,
+				      DRM_MODE_ENCODER_DAC);
+	if (ret) {
+		drm_err(mdev->dev,
+			"drm_simple_encoder_init() failed, error %d\n",
+			ret);
+		return ret;
 	}
+	encoder->possible_crtcs = 0x1;

 	connector = mga_vga_init(mdev->dev);
 	if (!connector) {
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@ -160,16 +160,12 @@ struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, helper, &msm_fb_helper_funcs);

-	ret = drm_fb_helper_init(dev, helper, priv->num_connectors);
+	ret = drm_fb_helper_init(dev, helper);
 	if (ret) {
 		DRM_DEV_ERROR(dev->dev, "could not init fbdev: ret=%d\n", ret);
 		goto fail;
 	}

-	ret = drm_fb_helper_single_add_all_connectors(helper);
-	if (ret)
-		goto fini;
-
 	/* the fw fb could be anywhere in memory */
 	drm_fb_helper_remove_conflicting_framebuffers(NULL, "msm", false);

--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@ -1260,23 +1260,16 @@ static void
 nv50_mstm_destroy_connector(struct drm_dp_mst_topology_mgr *mgr,
 			    struct drm_connector *connector)
 {
-	struct nouveau_drm *drm = nouveau_drm(connector->dev);
 	struct nv50_mstc *mstc = nv50_mstc(connector);

 	drm_connector_unregister(&mstc->connector);

-	drm_fb_helper_remove_one_connector(&drm->fbcon->helper, &mstc->connector);
-
 	drm_connector_put(&mstc->connector);
 }

 static void
 nv50_mstm_register_connector(struct drm_connector *connector)
 {
-	struct nouveau_drm *drm = nouveau_drm(connector->dev);
-
-	drm_fb_helper_add_one_connector(&drm->fbcon->helper, connector);
-
 	drm_connector_register(connector);
 }

--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@ -558,14 +558,10 @@ nouveau_fbcon_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);

-	ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
+	ret = drm_fb_helper_init(dev, &fbcon->helper);
 	if (ret)
 		goto free;

-	ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
-	if (ret)
-		goto fini;
-
 	if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
 		if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
 			preferred_bpp = 8;
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@ -242,14 +242,10 @@ void omap_fbdev_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, helper, &omap_fb_helper_funcs);

-	ret = drm_fb_helper_init(dev, helper, priv->num_pipes);
+	ret = drm_fb_helper_init(dev, helper);
 	if (ret)
 		goto fail;

-	ret = drm_fb_helper_single_add_all_connectors(helper);
-	if (ret)
-		goto fini;
-
 	ret = drm_fb_helper_initial_config(helper, 32);
 	if (ret)
 		goto fini;
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@ -59,6 +59,16 @@ config DRM_PANEL_SIMPLE
 	  that it can be automatically turned off when the panel goes into a
 	  low power state.

+config DRM_PANEL_ELIDA_KD35T133
+	tristate "Elida KD35T133 panel driver"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for the Elida
+	  KD35T133 controller for 320x480 LCD panels with MIPI-DSI
+	  system interfaces.
+
 config DRM_PANEL_FEIXIN_K101_IM2BA02
 	tristate "Feixin K101 IM2BA02 panel"
 	depends on OF
@ -167,6 +177,16 @@ config DRM_PANEL_NEC_NL8048HL11
 	  panel (found on the Zoom2/3/3630 SDP boards). To compile this driver
 	  as a module, choose M here.

+config DRM_PANEL_NOVATEK_NT35510
+	tristate "Novatek NT35510 RGB panel driver"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for the panels built
+	  around the Novatek NT35510 display controller, such as some
+	  Hydis panels.
+
 config DRM_PANEL_NOVATEK_NT39016
 	tristate "Novatek NT39016 RGB/SPI panel"
 	depends on OF && SPI
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
 obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
 obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
 obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
+obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o
 obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o
 obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
@ -15,6 +16,7 @@ obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829) += panel-leadtek-ltk500hd1829.o
 obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
 obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
 obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
+obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35510) += panel-novatek-nt35510.o
 obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o
 obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o
 obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@ -0,0 +1,352 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Elida kd35t133 5.5" MIPI-DSI panel driver
+ * Copyright (C) 2020 Theobroma Systems Design und Consulting GmbH
+ *
+ * based on
+ *
+ * Rockteck jh057n00900 5.5" MIPI-DSI panel driver
+ * Copyright (C) Purism SPC 2019
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/media-bus-format.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/display_timing.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+
+/* Manufacturer specific Commands send via DSI */
+#define KD35T133_CMD_INTERFACEMODECTRL		0xb0
+#define KD35T133_CMD_FRAMERATECTRL		0xb1
+#define KD35T133_CMD_DISPLAYINVERSIONCTRL	0xb4
+#define KD35T133_CMD_DISPLAYFUNCTIONCTRL	0xb6
+#define KD35T133_CMD_POWERCONTROL1		0xc0
+#define KD35T133_CMD_POWERCONTROL2		0xc1
+#define KD35T133_CMD_VCOMCONTROL		0xc5
+#define KD35T133_CMD_POSITIVEGAMMA		0xe0
+#define KD35T133_CMD_NEGATIVEGAMMA		0xe1
+#define KD35T133_CMD_SETIMAGEFUNCTION		0xe9
+#define KD35T133_CMD_ADJUSTCONTROL3		0xf7
+
+struct kd35t133 {
+	struct device *dev;
+	struct drm_panel panel;
+	struct gpio_desc *reset_gpio;
+	struct regulator *vdd;
+	struct regulator *iovcc;
+	bool prepared;
+};
+
+static inline struct kd35t133 *panel_to_kd35t133(struct drm_panel *panel)
+{
+	return container_of(panel, struct kd35t133, panel);
+}
+
+#define dsi_dcs_write_seq(dsi, cmd, seq...) do {			\
+		static const u8 d[] = { seq };				\
+		int ret;						\
+		ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d));	\
+		if (ret < 0)						\
+			return ret;					\
+	} while (0)
+
+static int kd35t133_init_sequence(struct kd35t133 *ctx)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	struct device *dev = ctx->dev;
+
+	/*
+	 * Init sequence was supplied by the panel vendor with minimal
+	 * documentation.
+	 */
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_POSITIVEGAMMA,
+			  0x00, 0x13, 0x18, 0x04, 0x0f, 0x06, 0x3a, 0x56,
+			  0x4d, 0x03, 0x0a, 0x06, 0x30, 0x3e, 0x0f);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_NEGATIVEGAMMA,
+			  0x00, 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34,
+			  0x4d, 0x06, 0x0d, 0x0b, 0x31, 0x37, 0x0f);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL1, 0x18, 0x17);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL2, 0x41);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_VCOMCONTROL, 0x00, 0x1a, 0x80);
+	dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x48);
+	dsi_dcs_write_seq(dsi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_INTERFACEMODECTRL, 0x00);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_FRAMERATECTRL, 0xa0);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYINVERSIONCTRL, 0x02);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYFUNCTIONCTRL,
+			  0x20, 0x02);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_SETIMAGEFUNCTION, 0x00);
+	dsi_dcs_write_seq(dsi, KD35T133_CMD_ADJUSTCONTROL3,
+			  0xa9, 0x51, 0x2c, 0x82);
+	mipi_dsi_dcs_write(dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0);
+
+	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
+	return 0;
+}
+
+static int kd35t133_unprepare(struct drm_panel *panel)
+{
+	struct kd35t133 *ctx = panel_to_kd35t133(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0)
+		DRM_DEV_ERROR(ctx->dev, "failed to set display off: %d\n",
+			      ret);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev, "failed to enter sleep mode: %d\n",
+			      ret);
+		return ret;
+	}
+
+	regulator_disable(ctx->iovcc);
+	regulator_disable(ctx->vdd);
+
+	ctx->prepared = false;
+
+	return 0;
+}
+
+static int kd35t133_prepare(struct drm_panel *panel)
+{
+	struct kd35t133 *ctx = panel_to_kd35t133(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
+	ret = regulator_enable(ctx->vdd);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+			      "Failed to enable vdd supply: %d\n", ret);
+		return ret;
+	}
+
+	ret = regulator_enable(ctx->iovcc);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev,
+			      "Failed to enable iovcc supply: %d\n", ret);
+		goto disable_vdd;
+	}
+
+	msleep(20);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	usleep_range(10, 20);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+
+	msleep(20);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
+		goto disable_iovcc;
+	}
+
+	msleep(250);
+
+	ret = kd35t133_init_sequence(ctx);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
+			      ret);
+		goto disable_iovcc;
+	}
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev, "Failed to set display on: %d\n", ret);
+		goto disable_iovcc;
+	}
+
+	msleep(50);
+
+	ctx->prepared = true;
+
+	return 0;
+
+disable_iovcc:
+	regulator_disable(ctx->iovcc);
+disable_vdd:
+	regulator_disable(ctx->vdd);
+	return ret;
+}
+
+static const struct drm_display_mode default_mode = {
+	.hdisplay	= 320,
+	.hsync_start	= 320 + 130,
+	.hsync_end	= 320 + 130 + 4,
+	.htotal		= 320 + 130 + 4 + 130,
+	.vdisplay	= 480,
+	.vsync_start	= 480 + 2,
+	.vsync_end	= 480 + 2 + 1,
+	.vtotal		= 480 + 2 + 1 + 2,
+	.vrefresh	= 60,
+	.clock		= 17000,
+	.width_mm	= 42,
+	.height_mm	= 82,
+};
+
+static int kd35t133_get_modes(struct drm_panel *panel,
+				struct drm_connector *connector)
+{
+	struct kd35t133 *ctx = panel_to_kd35t133(panel);
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, &default_mode);
+	if (!mode) {
+		DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
+			      default_mode.hdisplay, default_mode.vdisplay,
+			      default_mode.vrefresh);
+		return -ENOMEM;
+	}
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs kd35t133_funcs = {
+	.unprepare	= kd35t133_unprepare,
+	.prepare	= kd35t133_prepare,
+	.get_modes	= kd35t133_get_modes,
+};
+
+static int kd35t133_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct kd35t133 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset_gpio)) {
+		DRM_DEV_ERROR(dev, "cannot get reset gpio\n");
+		return PTR_ERR(ctx->reset_gpio);
+	}
+
+	ctx->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(ctx->vdd)) {
+		ret = PTR_ERR(ctx->vdd);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev,
+				      "Failed to request vdd regulator: %d\n",
+				      ret);
+		return ret;
+	}
+
+	ctx->iovcc = devm_regulator_get(dev, "iovcc");
+	if (IS_ERR(ctx->iovcc)) {
+		ret = PTR_ERR(ctx->iovcc);
+		if (ret != -EPROBE_DEFER)
+			DRM_DEV_ERROR(dev,
+				      "Failed to request iovcc regulator: %d\n",
+				      ret);
+		return ret;
+	}
+
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	ctx->dev = dev;
+
+	dsi->lanes = 1;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+			  MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET;
+
+	drm_panel_init(&ctx->panel, &dsi->dev, &kd35t133_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return ret;
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(dev, "mipi_dsi_attach failed: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void kd35t133_shutdown(struct mipi_dsi_device *dsi)
+{
+	struct kd35t133 *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = drm_panel_unprepare(&ctx->panel);
+	if (ret < 0)
+		DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
+			      ret);
+
+	ret = drm_panel_disable(&ctx->panel);
+	if (ret < 0)
+		DRM_DEV_ERROR(&dsi->dev, "Failed to disable panel: %d\n",
+			      ret);
+}
+
+static int kd35t133_remove(struct mipi_dsi_device *dsi)
+{
+	struct kd35t133 *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	kd35t133_shutdown(dsi);
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
+			      ret);
+
+	drm_panel_remove(&ctx->panel);
+
+	return 0;
+}
+
+static const struct of_device_id kd35t133_of_match[] = {
+	{ .compatible = "elida,kd35t133" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, kd35t133_of_match);
+
+static struct mipi_dsi_driver kd35t133_driver = {
+	.driver = {
+		.name = "panel-elida-kd35t133",
+		.of_match_table = kd35t133_of_match,
+	},
+	.probe	= kd35t133_probe,
+	.remove = kd35t133_remove,
+	.shutdown = kd35t133_shutdown,
+};
+module_mipi_dsi_driver(kd35t133_driver);
+
+MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");
+MODULE_DESCRIPTION("DRM driver for Elida kd35t133 MIPI DSI panel");
+MODULE_LICENSE("GPL v2");
--- a/drivers/gpu/drm/panel/panel-novatek-nt35510.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt35510.c
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@ -351,6 +351,65 @@ static const struct drm_panel_funcs panel_simple_funcs = {
 	.get_timings = panel_simple_get_timings,
 };

+static struct panel_desc panel_dpi;
+
+static int panel_dpi_probe(struct device *dev,
+			   struct panel_simple *panel)
+{
+	struct display_timing *timing;
+	const struct device_node *np;
+	struct panel_desc *desc;
+	unsigned int bus_flags;
+	struct videomode vm;
+	const char *mapping;
+	int ret;
+
+	np = dev->of_node;
+	desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
+	if (!desc)
+		return -ENOMEM;
+
+	timing = devm_kzalloc(dev, sizeof(*timing), GFP_KERNEL);
+	if (!timing)
+		return -ENOMEM;
+
+	ret = of_get_display_timing(np, "panel-timing", timing);
+	if (ret < 0) {
+		dev_err(dev, "%pOF: no panel-timing node found for \"panel-dpi\" binding\n",
+			np);
+		return ret;
+	}
+
+	desc->timings = timing;
+	desc->num_timings = 1;
+
+	of_property_read_u32(np, "width-mm", &desc->size.width);
+	of_property_read_u32(np, "height-mm", &desc->size.height);
+
+	of_property_read_string(np, "data-mapping", &mapping);
+	if (!strcmp(mapping, "rgb24"))
+		desc->bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+	else if (!strcmp(mapping, "rgb565"))
+		desc->bus_format = MEDIA_BUS_FMT_RGB565_1X16;
+	else if (!strcmp(mapping, "bgr666"))
+		desc->bus_format = MEDIA_BUS_FMT_RGB666_1X18;
+	else if (!strcmp(mapping, "lvds666"))
+		desc->bus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI;
+
+	/* Extract bus_flags from display_timing */
+	bus_flags = 0;
+	vm.flags = timing->flags;
+	drm_bus_flags_from_videomode(&vm, &bus_flags);
+	desc->bus_flags = bus_flags;
+
+	/* We do not know the connector for the DT node, so guess it */
+	desc->connector_type = DRM_MODE_CONNECTOR_DPI;
+
+	panel->desc = desc;
+
+	return 0;
+}
+
 #define PANEL_SIMPLE_BOUNDS_CHECK(to_check, bounds, field) \
 	(to_check->field.typ >= bounds->field.min && \
 	 to_check->field.typ <= bounds->field.max)
@ -437,8 +496,15 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
 			return -EPROBE_DEFER;
 	}

-	if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
-		panel_simple_parse_panel_timing_node(dev, panel, &dt);
+	if (desc == &panel_dpi) {
+		/* Handle the generic panel-dpi binding */
+		err = panel_dpi_probe(dev, panel);
+		if (err)
+			goto free_ddc;
+	} else {
+		if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
+			panel_simple_parse_panel_timing_node(dev, panel, &dt);
+	}

 	drm_panel_init(&panel->base, dev, &panel_simple_funcs,
 		       desc->connector_type);
@ -2340,6 +2406,51 @@ static const struct panel_desc netron_dy_e231732 = {
 	.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
 };

+static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
+	{
+		.clock = 138500,
+		.hdisplay = 1920,
+		.hsync_start = 1920 + 48,
+		.hsync_end = 1920 + 48 + 32,
+		.htotal = 1920 + 48 + 32 + 80,
+		.vdisplay = 1080,
+		.vsync_start = 1080 + 3,
+		.vsync_end = 1080 + 3 + 5,
+		.vtotal = 1080 + 3 + 5 + 23,
+		.vrefresh = 60,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	}, {
+		.clock = 110920,
+		.hdisplay = 1920,
+		.hsync_start = 1920 + 48,
+		.hsync_end = 1920 + 48 + 32,
+		.htotal = 1920 + 48 + 32 + 80,
+		.vdisplay = 1080,
+		.vsync_start = 1080 + 3,
+		.vsync_end = 1080 + 3 + 5,
+		.vtotal = 1080 + 3 + 5 + 23,
+		.vrefresh = 48,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	}
+};
+
+static const struct panel_desc neweast_wjfh116008a = {
+	.modes = neweast_wjfh116008a_modes,
+	.num_modes = 2,
+	.bpc = 6,
+	.size = {
+		.width = 260,
+		.height = 150,
+	},
+	.delay = {
+		.prepare = 110,
+		.enable = 20,
+		.unprepare = 500,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
+	.connector_type = DRM_MODE_CONNECTOR_eDP,
+};
+
 static const struct drm_display_mode newhaven_nhd_43_480272ef_atxl_mode = {
 	.clock = 9000,
 	.hdisplay = 480,
@ -2914,30 +3025,6 @@ static const struct panel_desc sharp_lq123p1jx31 = {
 	},
 };

-static const struct drm_display_mode sharp_lq150x1lg11_mode = {
-	.clock = 71100,
-	.hdisplay = 1024,
-	.hsync_start = 1024 + 168,
-	.hsync_end = 1024 + 168 + 64,
-	.htotal = 1024 + 168 + 64 + 88,
-	.vdisplay = 768,
-	.vsync_start = 768 + 37,
-	.vsync_end = 768 + 37 + 2,
-	.vtotal = 768 + 37 + 2 + 8,
-	.vrefresh = 60,
-};
-
-static const struct panel_desc sharp_lq150x1lg11 = {
-	.modes = &sharp_lq150x1lg11_mode,
-	.num_modes = 1,
-	.bpc = 6,
-	.size = {
-		.width = 304,
-		.height = 228,
-	},
-	.bus_format = MEDIA_BUS_FMT_RGB565_1X16,
-};
-
 static const struct display_timing sharp_ls020b1dd01d_timing = {
 	.pixelclock = { 2000000, 4200000, 5000000 },
 	.hactive = { 240, 240, 240 },
@ -3560,6 +3647,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "netron-dy,e231732",
 		.data = &netron_dy_e231732,
+	}, {
+		.compatible = "neweast,wjfh116008a",
+		.data = &neweast_wjfh116008a,
 	}, {
 		.compatible = "newhaven,nhd-4.3-480272ef-atxl",
 		.data = &newhaven_nhd_43_480272ef_atxl,
@ -3629,9 +3719,6 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "sharp,lq123p1jx31",
 		.data = &sharp_lq123p1jx31,
-	}, {
-		.compatible = "sharp,lq150x1lg11",
-		.data = &sharp_lq150x1lg11,
 	}, {
 		.compatible = "sharp,ls020b1dd01d",
 		.data = &sharp_ls020b1dd01d,
@ -3689,6 +3776,10 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "winstar,wf35ltiacd",
 		.data = &winstar_wf35ltiacd,
+	}, {
+		/* Must be the last entry */
+		.compatible = "panel-dpi",
+		.data = &panel_dpi,
 	}, {
 		/* sentinel */
 	}
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@ -659,7 +659,7 @@ static int panfrost_remove(struct platform_device *pdev)
 	return 0;
 }

-const char * const default_supplies[] = { "mali" };
+static const char * const default_supplies[] = { "mali" };
 static const struct panfrost_compatible default_data = {
 	.num_supplies = ARRAY_SIZE(default_supplies),
 	.supply_names = default_supplies,
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@ -31,6 +31,7 @@
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>

 #include "qxl_drv.h"
 #include "qxl_object.h"
@ -1007,9 +1008,6 @@ static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
 	return &qxl_output->enc;
 }

-static const struct drm_encoder_helper_funcs qxl_enc_helper_funcs = {
-};
-
 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
 	.get_modes = qxl_conn_get_modes,
 	.mode_valid = qxl_conn_mode_valid,
@ -1059,15 +1057,6 @@ static const struct drm_connector_funcs qxl_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };

-static void qxl_enc_destroy(struct drm_encoder *encoder)
-{
-	drm_encoder_cleanup(encoder);
-}
-
-static const struct drm_encoder_funcs qxl_enc_funcs = {
-	.destroy = qxl_enc_destroy,
-};
-
 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
 {
 	if (qdev->hotplug_mode_update_property)
@ -1086,6 +1075,7 @@ static int qdev_output_init(struct drm_device *dev, int num_output)
 	struct qxl_output *qxl_output;
 	struct drm_connector *connector;
 	struct drm_encoder *encoder;
+	int ret;

 	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
 	if (!qxl_output)
@ -1098,15 +1088,19 @@ static int qdev_output_init(struct drm_device *dev, int num_output)
 	drm_connector_init(dev, &qxl_output->base,
 			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);

-	drm_encoder_init(dev, &qxl_output->enc, &qxl_enc_funcs,
-			 DRM_MODE_ENCODER_VIRTUAL, NULL);
+	ret = drm_simple_encoder_init(dev, &qxl_output->enc,
+				      DRM_MODE_ENCODER_VIRTUAL);
+	if (ret) {
+		drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
+			ret);
+		goto err_drm_connector_cleanup;
+	}

 	/* we get HPD via client monitors config */
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
 	encoder->possible_crtcs = 1 << num_output;
 	drm_connector_attach_encoder(&qxl_output->base,
 					  &qxl_output->enc);
-	drm_encoder_helper_add(encoder, &qxl_enc_helper_funcs);
 	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);

 	drm_object_attach_property(&connector->base,
@ -1116,6 +1110,11 @@ static int qdev_output_init(struct drm_device *dev, int num_output)
 	drm_object_attach_property(&connector->base,
 				   dev->mode_config.suggested_y_property, 0);
 	return 0;
+
+err_drm_connector_cleanup:
+	drm_connector_cleanup(&qxl_output->base);
+	kfree(qxl_output);
+	return ret;
 }

 static struct drm_framebuffer *
--- a/drivers/gpu/drm/radeon/radeon_dp_mst.c
+++ b/drivers/gpu/drm/radeon/radeon_dp_mst.c
@ -303,23 +303,13 @@ static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topol

 static void radeon_dp_register_mst_connector(struct drm_connector *connector)
 {
-	struct drm_device *dev = connector->dev;
-	struct radeon_device *rdev = dev->dev_private;
-
-	radeon_fb_add_connector(rdev, connector);
-
 	drm_connector_register(connector);
 }

 static void radeon_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
 					    struct drm_connector *connector)
 {
-	struct radeon_connector *master = container_of(mgr, struct radeon_connector, mst_mgr);
-	struct drm_device *dev = master->base.dev;
-	struct radeon_device *rdev = dev->dev_private;
-
 	drm_connector_unregister(connector);
-	radeon_fb_remove_connector(rdev, connector);
 	drm_connector_cleanup(connector);

 	kfree(connector);
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@ -354,15 +354,10 @@ int radeon_fbdev_init(struct radeon_device *rdev)
 	drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper,
 			      &radeon_fb_helper_funcs);

-	ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
-				 RADEONFB_CONN_LIMIT);
+	ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper);
 	if (ret)
 		goto free;

-	ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
-	if (ret)
-		goto fini;
-
 	/* disable all the possible outputs/crtcs before entering KMS mode */
 	drm_helper_disable_unused_functions(rdev->ddev);

@ -404,15 +399,3 @@ bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 		return true;
 	return false;
 }
-
-void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector)
-{
-	if (rdev->mode_info.rfbdev)
-		drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector);
-}
-
-void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector)
-{
-	if (rdev->mode_info.rfbdev)
-		drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector);
-}
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@ -986,9 +986,6 @@ bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)

 void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id);

-void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector);
-void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector);
-
 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id);

 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled);
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
@ -124,7 +124,7 @@ int rockchip_drm_fbdev_init(struct drm_device *dev)

 	drm_fb_helper_prepare(dev, helper, &rockchip_drm_fb_helper_funcs);

-	ret = drm_fb_helper_init(dev, helper, ROCKCHIP_MAX_CONNECTOR);
+	ret = drm_fb_helper_init(dev, helper);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev->dev,
 			      "Failed to initialize drm fb helper - %d.\n",
@ -132,13 +132,6 @@ int rockchip_drm_fbdev_init(struct drm_device *dev)
 		return ret;
 	}

-	ret = drm_fb_helper_single_add_all_connectors(helper);
-	if (ret < 0) {
-		DRM_DEV_ERROR(dev->dev,
-			      "Failed to add connectors - %d.\n", ret);
-		goto err_drm_fb_helper_fini;
-	}
-
 	ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev->dev,
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@ -314,19 +314,13 @@ static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
 	struct drm_device *drm = fbdev->base.dev;
 	int err;

-	err = drm_fb_helper_init(drm, &fbdev->base, max_connectors);
+	err = drm_fb_helper_init(drm, &fbdev->base);
 	if (err < 0) {
 		dev_err(drm->dev, "failed to initialize DRM FB helper: %d\n",
 			err);
 		return err;
 	}

-	err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
-	if (err < 0) {
-		dev_err(drm->dev, "failed to add connectors: %d\n", err);
-		goto fini;
-	}
-
 	err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
 	if (err < 0) {
 		dev_err(drm->dev, "failed to set initial configuration: %d\n",
--- a/drivers/gpu/drm/tidss/tidss_crtc.c
+++ b/drivers/gpu/drm/tidss/tidss_crtc.c
@ -17,6 +17,7 @@
 #include "tidss_dispc.h"
 #include "tidss_drv.h"
 #include "tidss_irq.h"
+#include "tidss_plane.h"

 /* Page flip and frame done IRQs */

@ -111,6 +112,54 @@ static int tidss_crtc_atomic_check(struct drm_crtc *crtc,
 	return dispc_vp_bus_check(dispc, hw_videoport, state);
 }

+/*
+ * This needs all affected planes to be present in the atomic
+ * state. The untouched planes are added to the state in
+ * tidss_atomic_check().
+ */
+static void tidss_crtc_position_planes(struct tidss_device *tidss,
+				       struct drm_crtc *crtc,
+				       struct drm_crtc_state *old_state,
+				       bool newmodeset)
+{
+	struct drm_atomic_state *ostate = old_state->state;
+	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
+	struct drm_crtc_state *cstate = crtc->state;
+	int layer;
+
+	if (!newmodeset && !cstate->zpos_changed &&
+	    !to_tidss_crtc_state(cstate)->plane_pos_changed)
+		return;
+
+	for (layer = 0; layer < tidss->feat->num_planes; layer++) {
+		struct drm_plane_state *pstate;
+		struct drm_plane *plane;
+		bool layer_active = false;
+		int i;
+
+		for_each_new_plane_in_state(ostate, plane, pstate, i) {
+			if (pstate->crtc != crtc || !pstate->visible)
+				continue;
+
+			if (pstate->normalized_zpos == layer) {
+				layer_active = true;
+				break;
+			}
+		}
+
+		if (layer_active) {
+			struct tidss_plane *tplane = to_tidss_plane(plane);
+
+			dispc_ovr_set_plane(tidss->dispc, tplane->hw_plane_id,
+					    tcrtc->hw_videoport,
+					    pstate->crtc_x, pstate->crtc_y,
+					    layer);
+		}
+		dispc_ovr_enable_layer(tidss->dispc, tcrtc->hw_videoport, layer,
+				       layer_active);
+	}
+}
+
 static void tidss_crtc_atomic_flush(struct drm_crtc *crtc,
 				    struct drm_crtc_state *old_crtc_state)
 {
@ -146,6 +195,9 @@ static void tidss_crtc_atomic_flush(struct drm_crtc *crtc,
 	/* Write vp properties to HW if needed. */
 	dispc_vp_setup(tidss->dispc, tcrtc->hw_videoport, crtc->state, false);

+	/* Update plane positions if needed. */
+	tidss_crtc_position_planes(tidss, crtc, old_crtc_state, false);
+
 	WARN_ON(drm_crtc_vblank_get(crtc) != 0);

 	spin_lock_irqsave(&ddev->event_lock, flags);
@ -183,6 +235,7 @@ static void tidss_crtc_atomic_enable(struct drm_crtc *crtc,
 		return;

 	dispc_vp_setup(tidss->dispc, tcrtc->hw_videoport, crtc->state, true);
+	tidss_crtc_position_planes(tidss, crtc, old_state, true);

 	/* Turn vertical blanking interrupt reporting on. */
 	drm_crtc_vblank_on(crtc);
@ -318,6 +371,8 @@ static struct drm_crtc_state *tidss_crtc_duplicate_state(struct drm_crtc *crtc)

 	__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);

+	state->plane_pos_changed = false;
+
 	state->bus_format = current_state->bus_format;
 	state->bus_flags = current_state->bus_flags;

--- a/drivers/gpu/drm/tidss/tidss_crtc.h
+++ b/drivers/gpu/drm/tidss/tidss_crtc.h
@ -32,6 +32,8 @@ struct tidss_crtc_state {
 	/* Must be first. */
 	struct drm_crtc_state base;

+	bool plane_pos_changed;
+
 	u32 bus_format;
 	u32 bus_flags;
 };
--- a/drivers/gpu/drm/tidss/tidss_dispc.c
+++ b/drivers/gpu/drm/tidss/tidss_dispc.c
@ -281,11 +281,6 @@ struct dss_vp_data {
 	u32 *gamma_table;
 };

-struct dss_plane_data {
-	u32 zorder;
-	u32 hw_videoport;
-};
-
 struct dispc_device {
 	struct tidss_device *tidss;
 	struct device *dev;
@ -307,8 +302,6 @@ struct dispc_device {

 	struct dss_vp_data vp_data[TIDSS_MAX_PORTS];

-	struct dss_plane_data plane_data[TIDSS_MAX_PLANES];
-
 	u32 *fourccs;
 	u32 num_fourccs;

@ -1235,7 +1228,7 @@ int dispc_vp_set_clk_rate(struct dispc_device *dispc, u32 hw_videoport,

 	if (dispc_pclk_diff(rate, new_rate) > 5)
 		dev_warn(dispc->dev,
-			 "vp%d: Clock rate %lu differs over 5%% from requsted %lu\n",
+			 "vp%d: Clock rate %lu differs over 5%% from requested %lu\n",
 			 hw_videoport, new_rate, rate);

 	dev_dbg(dispc->dev, "vp%d: new rate %lu Hz (requested %lu Hz)\n",
@ -1247,7 +1240,7 @@ int dispc_vp_set_clk_rate(struct dispc_device *dispc, u32 hw_videoport,
 /* OVR */
 static void dispc_k2g_ovr_set_plane(struct dispc_device *dispc,
 				    u32 hw_plane, u32 hw_videoport,
-				    u32 x, u32 y, u32 zpos)
+				    u32 x, u32 y, u32 layer)
 {
 	/* On k2g there is only one plane and no need for ovr */
 	dispc_vid_write(dispc, hw_plane, DISPC_VID_K2G_POSITION,
@ -1256,44 +1249,43 @@ static void dispc_k2g_ovr_set_plane(struct dispc_device *dispc,

 static void dispc_am65x_ovr_set_plane(struct dispc_device *dispc,
 				      u32 hw_plane, u32 hw_videoport,
-				      u32 x, u32 y, u32 zpos)
+				      u32 x, u32 y, u32 layer)
 {
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(zpos),
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer),
 			hw_plane, 4, 1);
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(zpos),
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer),
 			x, 17, 6);
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(zpos),
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer),
 			y, 30, 19);
 }

 static void dispc_j721e_ovr_set_plane(struct dispc_device *dispc,
 				      u32 hw_plane, u32 hw_videoport,
-				      u32 x, u32 y, u32 zpos)
+				      u32 x, u32 y, u32 layer)
 {
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(zpos),
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer),
 			hw_plane, 4, 1);
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES2(zpos),
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES2(layer),
 			x, 13, 0);
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES2(zpos),
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES2(layer),
 			y, 29, 16);
 }

-static void dispc_ovr_set_plane(struct dispc_device *dispc,
-				u32 hw_plane, u32 hw_videoport,
-				u32 x, u32 y, u32 zpos)
+void dispc_ovr_set_plane(struct dispc_device *dispc, u32 hw_plane,
+			 u32 hw_videoport, u32 x, u32 y, u32 layer)
 {
 	switch (dispc->feat->subrev) {
 	case DISPC_K2G:
 		dispc_k2g_ovr_set_plane(dispc, hw_plane, hw_videoport,
-					x, y, zpos);
+					x, y, layer);
 		break;
 	case DISPC_AM65X:
 		dispc_am65x_ovr_set_plane(dispc, hw_plane, hw_videoport,
-					  x, y, zpos);
+					  x, y, layer);
 		break;
 	case DISPC_J721E:
 		dispc_j721e_ovr_set_plane(dispc, hw_plane, hw_videoport,
-					  x, y, zpos);
+					  x, y, layer);
 		break;
 	default:
 		WARN_ON(1);
@ -1301,10 +1293,13 @@ static void dispc_ovr_set_plane(struct dispc_device *dispc,
 	}
 }

-static void dispc_ovr_enable_plane(struct dispc_device *dispc,
-				   u32 hw_videoport, u32 zpos, bool enable)
+void dispc_ovr_enable_layer(struct dispc_device *dispc,
+			    u32 hw_videoport, u32 layer, bool enable)
 {
-	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(zpos),
+	if (dispc->feat->subrev == DISPC_K2G)
+		return;
+
+	OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer),
 			!!enable, 0, 0);
 }

@ -1510,7 +1505,7 @@ struct dispc_csc_coef *dispc_find_csc(enum drm_color_encoding encoding,
 static void dispc_vid_csc_setup(struct dispc_device *dispc, u32 hw_plane,
 				const struct drm_plane_state *state)
 {
-	static const struct dispc_csc_coef *coef;
+	const struct dispc_csc_coef *coef;

 	coef = dispc_find_csc(state->color_encoding, state->color_range);
 	if (!coef) {
@ -1699,7 +1694,7 @@ static int dispc_vid_calc_scaling(struct dispc_device *dispc,

 		if (sp->xinc > f->xinc_max) {
 			dev_dbg(dispc->dev,
-				"%s: Too wide input bufer %u > %u\n", __func__,
+				"%s: Too wide input buffer %u > %u\n", __func__,
 				state->src_w >> 16, in_width_max * f->xinc_max);
 			return -EINVAL;
 		}
@ -2070,21 +2065,11 @@ int dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane,
 		VID_REG_FLD_MOD(dispc, hw_plane, DISPC_VID_ATTRIBUTES, 0,
 				28, 28);

-	dispc_ovr_set_plane(dispc, hw_plane, hw_videoport,
-			    state->crtc_x, state->crtc_y,
-			    state->normalized_zpos);
-
-	dispc->plane_data[hw_plane].zorder = state->normalized_zpos;
-	dispc->plane_data[hw_plane].hw_videoport = hw_videoport;
-
 	return 0;
 }

 int dispc_plane_enable(struct dispc_device *dispc, u32 hw_plane, bool enable)
 {
-	dispc_ovr_enable_plane(dispc, dispc->plane_data[hw_plane].hw_videoport,
-			       dispc->plane_data[hw_plane].zorder, enable);
-
 	VID_REG_FLD_MOD(dispc, hw_plane, DISPC_VID_ATTRIBUTES, !!enable, 0, 0);

 	return 0;
--- a/drivers/gpu/drm/tidss/tidss_dispc.h
+++ b/drivers/gpu/drm/tidss/tidss_dispc.h
@ -94,6 +94,11 @@ extern const struct dispc_features dispc_j721e_feats;
 void dispc_set_irqenable(struct dispc_device *dispc, dispc_irq_t mask);
 dispc_irq_t dispc_read_and_clear_irqstatus(struct dispc_device *dispc);

+void dispc_ovr_set_plane(struct dispc_device *dispc, u32 hw_plane,
+			 u32 hw_videoport, u32 x, u32 y, u32 layer);
+void dispc_ovr_enable_layer(struct dispc_device *dispc,
+			    u32 hw_videoport, u32 layer, bool enable);
+
 void dispc_vp_prepare(struct dispc_device *dispc, u32 hw_videoport,
 		      const struct drm_crtc_state *state);
 void dispc_vp_enable(struct dispc_device *dispc, u32 hw_videoport,
--- a/drivers/gpu/drm/tidss/tidss_encoder.c
+++ b/drivers/gpu/drm/tidss/tidss_encoder.c
@ -32,7 +32,7 @@ static int tidss_encoder_atomic_check(struct drm_encoder *encoder,
 	 * bridge timings, or from the connector's display_info if no
 	 * bridge defines the timings.
 	 */
-	list_for_each_entry(bridge, &encoder->bridge_chain, chain_node) {
+	drm_for_each_bridge_in_chain(encoder, bridge) {
 		if (!bridge->timings)
 			continue;

--- a/drivers/gpu/drm/tidss/tidss_kms.c
+++ b/drivers/gpu/drm/tidss/tidss_kms.c
@ -47,9 +47,59 @@ static const struct drm_mode_config_helper_funcs mode_config_helper_funcs = {
 	.atomic_commit_tail = tidss_atomic_commit_tail,
 };

+static int tidss_atomic_check(struct drm_device *ddev,
+			      struct drm_atomic_state *state)
+{
+	struct drm_plane_state *opstate;
+	struct drm_plane_state *npstate;
+	struct drm_plane *plane;
+	struct drm_crtc_state *cstate;
+	struct drm_crtc *crtc;
+	int ret, i;
+
+	ret = drm_atomic_helper_check(ddev, state);
+	if (ret)
+		return ret;
+
+	/*
+	 * Add all active planes on a CRTC to the atomic state, if
+	 * x/y/z position or activity of any plane on that CRTC
+	 * changes. This is needed for updating the plane positions in
+	 * tidss_crtc_position_planes() which is called from
+	 * crtc_atomic_enable() and crtc_atomic_flush(). We have an
+	 * extra flag to to mark x,y-position changes and together
+	 * with zpos_changed the condition recognizes all the above
+	 * cases.
+	 */
+	for_each_oldnew_plane_in_state(state, plane, opstate, npstate, i) {
+		if (!npstate->crtc || !npstate->visible)
+			continue;
+
+		if (!opstate->crtc || opstate->crtc_x != npstate->crtc_x ||
+		    opstate->crtc_y != npstate->crtc_y) {
+			cstate = drm_atomic_get_crtc_state(state,
+							   npstate->crtc);
+			if (IS_ERR(cstate))
+				return PTR_ERR(cstate);
+			to_tidss_crtc_state(cstate)->plane_pos_changed = true;
+		}
+	}
+
+	for_each_new_crtc_in_state(state, crtc, cstate, i) {
+		if (to_tidss_crtc_state(cstate)->plane_pos_changed ||
+		    cstate->zpos_changed) {
+			ret = drm_atomic_add_affected_planes(state, crtc);
+			if (ret)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
 static const struct drm_mode_config_funcs mode_config_funcs = {
 	.fb_create = drm_gem_fb_create,
-	.atomic_check = drm_atomic_helper_check,
+	.atomic_check = tidss_atomic_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };

--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@ -1196,6 +1196,18 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
 	uint32_t new_flags;

 	dma_resv_assert_held(bo->base.resv);
+
+	/*
+	 * Remove the backing store if no placement is given.
+	 */
+	if (!placement->num_placement && !placement->num_busy_placement) {
+		ret = ttm_bo_pipeline_gutting(bo);
+		if (ret)
+			return ret;
+
+		return ttm_tt_create(bo, false);
+	}
+
 	/*
 	 * Check whether we need to move buffer.
 	 */
--- a/drivers/gpu/drm/v3d/v3d_drv.h
+++ b/drivers/gpu/drm/v3d/v3d_drv.h
@ -254,27 +254,42 @@ struct v3d_csd_job {
 };

 /**
- * _wait_for - magic (register) wait macro
+ * __wait_for - magic wait macro
 *
- * Does the right thing for modeset paths when run under kdgb or similar atomic
- * contexts. Note that it's important that we check the condition again after
- * having timed out, since the timeout could be due to preemption or similar and
- * we've never had a chance to check the condition before the timeout.
+ * Macro to help avoid open coding check/wait/timeout patterns. Note that it's
+ * important that we check the condition again after having timed out, since the
+ * timeout could be due to preemption or similar and we've never had a chance to
+ * check the condition before the timeout.
 */
-#define wait_for(COND, MS) ({ \
-	unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1;	\
-	int ret__ = 0;							\
-	while (!(COND)) {						\
-		if (time_after(jiffies, timeout__)) {			\
-			if (!(COND))					\
-				ret__ = -ETIMEDOUT;			\
+#define __wait_for(OP, COND, US, Wmin, Wmax) ({ \
+	const ktime_t end__ = ktime_add_ns(ktime_get_raw(), 1000ll * (US)); \
+	long wait__ = (Wmin); /* recommended min for usleep is 10 us */	\
+	int ret__;							\
+	might_sleep();							\
+	for (;;) {							\
+		const bool expired__ = ktime_after(ktime_get_raw(), end__); \
+		OP;							\
+		/* Guarantee COND check prior to timeout */		\
+		barrier();						\
+		if (COND) {						\
+			ret__ = 0;					\
 			break;						\
 		}							\
-		msleep(1);					\
+		if (expired__) {					\
+			ret__ = -ETIMEDOUT;				\
+			break;						\
+		}							\
+		usleep_range(wait__, wait__ * 2);			\
+		if (wait__ < (Wmax))					\
+			wait__ <<= 1;					\
 	}								\
 	ret__;								\
 })

+#define _wait_for(COND, US, Wmin, Wmax)	__wait_for(, (COND), (US), (Wmin), \
+						   (Wmax))
+#define wait_for(COND, MS)		_wait_for((COND), (MS) * 1000, 10, 1000)
+
 static inline unsigned long nsecs_to_jiffies_timeout(const u64 n)
 {
 	/* nsecs_to_jiffies64() does not guard against overflow */
--- a/drivers/gpu/drm/vboxvideo/vboxvideo.h
+++ b/drivers/gpu/drm/vboxvideo/vboxvideo.h
@ -138,7 +138,7 @@ struct vbva_buffer {

 	u32 data_len;
 	/* variable size for the rest of the vbva_buffer area in VRAM. */
-	u8 data[0];
+	u8 data[];
 } __packed;

 #define VBVA_MAX_RECORD_SIZE (128 * 1024 * 1024)
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@ -65,7 +65,7 @@ struct vc4_perfmon {
 	 * Note that counter values can't be reset, but you can fake a reset by
 	 * destroying the perfmon and creating a new one.
 	 */
-	u64 counters[0];
+	u64 counters[];
 };

 struct vc4_dev {
@ -677,32 +677,41 @@ struct vc4_validated_shader_info {
 };

 /**
- * _wait_for - magic (register) wait macro
+ * __wait_for - magic wait macro
 *
- * Does the right thing for modeset paths when run under kdgb or similar atomic
- * contexts. Note that it's important that we check the condition again after
- * having timed out, since the timeout could be due to preemption or similar and
- * we've never had a chance to check the condition before the timeout.
+ * Macro to help avoid open coding check/wait/timeout patterns. Note that it's
+ * important that we check the condition again after having timed out, since the
+ * timeout could be due to preemption or similar and we've never had a chance to
+ * check the condition before the timeout.
 */
-#define _wait_for(COND, MS, W) ({ \
-	unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1;	\
-	int ret__ = 0;							\
-	while (!(COND)) {						\
-		if (time_after(jiffies, timeout__)) {			\
-			if (!(COND))					\
-				ret__ = -ETIMEDOUT;			\
+#define __wait_for(OP, COND, US, Wmin, Wmax) ({ \
+	const ktime_t end__ = ktime_add_ns(ktime_get_raw(), 1000ll * (US)); \
+	long wait__ = (Wmin); /* recommended min for usleep is 10 us */	\
+	int ret__;							\
+	might_sleep();							\
+	for (;;) {							\
+		const bool expired__ = ktime_after(ktime_get_raw(), end__); \
+		OP;							\
+		/* Guarantee COND check prior to timeout */		\
+		barrier();						\
+		if (COND) {						\
+			ret__ = 0;					\
 			break;						\
 		}							\
-		if (W && drm_can_sleep())  {				\
-			msleep(W);					\
-		} else {						\
-			cpu_relax();					\
+		if (expired__) {					\
+			ret__ = -ETIMEDOUT;				\
+			break;						\
 		}							\
+		usleep_range(wait__, wait__ * 2);			\
+		if (wait__ < (Wmax))					\
+			wait__ <<= 1;					\
 	}								\
 	ret__;								\
 })

-#define wait_for(COND, MS) _wait_for(COND, MS, 1)
+#define _wait_for(COND, US, Wmin, Wmax)	__wait_for(, (COND), (US), (Wmin), \
+						   (Wmax))
+#define wait_for(COND, MS)		_wait_for((COND), (MS) * 1000, 10, 1000)

 /* vc4_bo.c */
 struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size);
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@ -69,16 +69,21 @@ struct virtio_gpu_object_params {
 struct virtio_gpu_object {
 	struct drm_gem_shmem_object base;
 	uint32_t hw_res_handle;
-
-	struct sg_table *pages;
-	uint32_t mapped;
-
 	bool dumb;
 	bool created;
 };
 #define gem_to_virtio_gpu_obj(gobj) \
 	container_of((gobj), struct virtio_gpu_object, base.base)

+struct virtio_gpu_object_shmem {
+	struct virtio_gpu_object base;
+	struct sg_table *pages;
+	uint32_t mapped;
+};
+
+#define to_virtio_gpu_shmem(virtio_gpu_object) \
+	container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)
+
 struct virtio_gpu_object_array {
 	struct ww_acquire_ctx ticket;
 	struct list_head next;
@ -366,7 +371,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 			     struct virtio_gpu_object **bo_ptr,
 			     struct virtio_gpu_fence *fence);

-bool virtio_gpu_is_shmem(struct drm_gem_object *obj);
+bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);

 /* virtgpu_prime.c */
 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@ -66,19 +66,25 @@ void virtio_gpu_cleanup_object(struct virtio_gpu_object *bo)
 {
 	struct virtio_gpu_device *vgdev = bo->base.base.dev->dev_private;

-	if (bo->pages) {
-		if (bo->mapped) {
-			dma_unmap_sg(vgdev->vdev->dev.parent,
-				     bo->pages->sgl, bo->mapped,
-				     DMA_TO_DEVICE);
-			bo->mapped = 0;
-		}
-		sg_free_table(bo->pages);
-		bo->pages = NULL;
-		drm_gem_shmem_unpin(&bo->base.base);
-	}
 	virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle);
-	drm_gem_shmem_free_object(&bo->base.base);
+	if (virtio_gpu_is_shmem(bo)) {
+		struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
+
+		if (shmem->pages) {
+			if (shmem->mapped) {
+				dma_unmap_sg(vgdev->vdev->dev.parent,
+					     shmem->pages->sgl, shmem->mapped,
+					     DMA_TO_DEVICE);
+				shmem->mapped = 0;
+			}
+
+			sg_free_table(shmem->pages);
+			shmem->pages = NULL;
+			drm_gem_shmem_unpin(&bo->base.base);
+		}
+
+		drm_gem_shmem_free_object(&bo->base.base);
+	}
 }

 static void virtio_gpu_free_object(struct drm_gem_object *obj)
@ -109,9 +115,9 @@ static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = {
 	.mmap = drm_gem_shmem_mmap,
 };

-bool virtio_gpu_is_shmem(struct drm_gem_object *obj)
+bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo)
 {
-	return obj->funcs == &virtio_gpu_shmem_funcs;
+	return bo->base.base.funcs == &virtio_gpu_shmem_funcs;
 }

 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
@ -134,6 +140,7 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
 					unsigned int *nents)
 {
 	bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
+	struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
 	struct scatterlist *sg;
 	int si, ret;

@ -141,19 +148,20 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
 	if (ret < 0)
 		return -EINVAL;

-	bo->pages = drm_gem_shmem_get_sg_table(&bo->base.base);
-	if (!bo->pages) {
+	shmem->pages = drm_gem_shmem_get_sg_table(&bo->base.base);
+	if (!shmem->pages) {
 		drm_gem_shmem_unpin(&bo->base.base);
 		return -EINVAL;
 	}

 	if (use_dma_api) {
-		bo->mapped = dma_map_sg(vgdev->vdev->dev.parent,
-					bo->pages->sgl, bo->pages->nents,
-					DMA_TO_DEVICE);
-		*nents = bo->mapped;
+		shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
+					   shmem->pages->sgl,
+					   shmem->pages->nents,
+					   DMA_TO_DEVICE);
+		*nents = shmem->mapped;
 	} else {
-		*nents = bo->pages->nents;
+		*nents = shmem->pages->nents;
 	}

 	*ents = kmalloc_array(*nents, sizeof(struct virtio_gpu_mem_entry),
@ -163,7 +171,7 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
 		return -ENOMEM;
 	}

-	for_each_sg(bo->pages->sgl, sg, *nents, si) {
+	for_each_sg(shmem->pages->sgl, sg, *nents, si) {
 		(*ents)[si].addr = cpu_to_le64(use_dma_api
 					       ? sg_dma_address(sg)
 					       : sg_phys(sg));
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@ -600,10 +600,11 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 	struct virtio_gpu_transfer_to_host_2d *cmd_p;
 	struct virtio_gpu_vbuffer *vbuf;
 	bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
+	struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);

 	if (use_dma_api)
 		dma_sync_sg_for_device(vgdev->vdev->dev.parent,
-				       bo->pages->sgl, bo->pages->nents,
+				       shmem->pages->sgl, shmem->pages->nents,
 				       DMA_TO_DEVICE);

 	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
@ -1015,10 +1016,11 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 	struct virtio_gpu_transfer_host_3d *cmd_p;
 	struct virtio_gpu_vbuffer *vbuf;
 	bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
+	struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);

 	if (use_dma_api)
 		dma_sync_sg_for_device(vgdev->vdev->dev.parent,
-				       bo->pages->sgl, bo->pages->nents,
+				       shmem->pages->sgl, shmem->pages->nents,
 				       DMA_TO_DEVICE);

 	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@ -435,7 +435,7 @@ config FB_FM2

 config FB_ARC
 	tristate "Arc Monochrome LCD board support"
-	depends on FB && X86
+	depends on FB && (X86 || COMPILE_TEST)
 	select FB_SYS_FILLRECT
 	select FB_SYS_COPYAREA
 	select FB_SYS_IMAGEBLIT
@ -1639,7 +1639,7 @@ config FB_VT8500

 config FB_WM8505
 	bool "Wondermedia WM8xxx-series frame buffer support"
-	depends on (FB = y) && ARM && ARCH_VT8500
+	depends on (FB = y) && HAS_IOMEM && (ARCH_VT8500 || COMPILE_TEST)
 	select FB_SYS_FILLRECT if (!FB_WMT_GE_ROPS)
 	select FB_SYS_COPYAREA if (!FB_WMT_GE_ROPS)
 	select FB_SYS_IMAGEBLIT
@ -1827,7 +1827,7 @@ config FB_FSL_DIU

 config FB_W100
 	tristate "W100 frame buffer support"
-	depends on FB && ARCH_PXA
+	depends on FB && HAS_IOMEM && (ARCH_PXA || COMPILE_TEST)
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@ -1844,7 +1844,8 @@ config FB_W100

 config FB_SH_MOBILE_LCDC
 	tristate "SuperH Mobile LCDC framebuffer support"
-	depends on FB && (SUPERH || ARCH_RENESAS) && HAVE_CLK
+	depends on FB && HAVE_CLK && HAS_IOMEM
+	depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
 	select FB_SYS_FILLRECT
 	select FB_SYS_COPYAREA
 	select FB_SYS_IMAGEBLIT
--- a/drivers/video/fbdev/aty/mach64_gx.c
+++ b/drivers/video/fbdev/aty/mach64_gx.c
@ -618,14 +618,13 @@ static int aty_var_to_pll_8398(const struct fb_info *info, u32 vclk_per,
 	u32 mhz100;		/* in 0.01 MHz */
 	u32 program_bits;
 	/* u32 post_divider; */
-	u32 mach64MinFreq, mach64MaxFreq, mach64RefFreq;
+	u32 mach64MinFreq, mach64MaxFreq;
 	u16 m, n, k = 0, save_m, save_n, twoToKth;

 	/* Calculate the programming word */
 	mhz100 = 100000000 / vclk_per;
 	mach64MinFreq = MIN_FREQ_2595;
 	mach64MaxFreq = MAX_FREQ_2595;
-	mach64RefFreq = REF_FREQ_2595;	/* 14.32 MHz */

 	save_m = 0;
 	save_n = 0;
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@ -849,12 +849,6 @@ static int radeonfb_check_var (struct fb_var_screeninfo *var, struct fb_info *in
 		case 9 ... 16:
 			v.bits_per_pixel = 16;
 			break;
-		case 17 ... 24:
-#if 0 /* Doesn't seem to work */
-			v.bits_per_pixel = 24;
-			break;
-#endif			
-			return -EINVAL;
 		case 25 ... 32:
 			v.bits_per_pixel = 32;
 			break;
@ -1650,14 +1644,14 @@ static int radeonfb_set_par(struct fb_info *info)
 	struct fb_var_screeninfo *mode = &info->var;
 	struct radeon_regs *newmode;
 	int hTotal, vTotal, hSyncStart, hSyncEnd,
-	    hSyncPol, vSyncStart, vSyncEnd, vSyncPol, cSync;
+	    vSyncStart, vSyncEnd;
 	u8 hsync_adj_tab[] = {0, 0x12, 9, 9, 6, 5};
 	u8 hsync_fudge_fp[] = {2, 2, 0, 0, 5, 5};
 	u32 sync, h_sync_pol, v_sync_pol, dotClock, pixClock;
 	int i, freq;
 	int format = 0;
 	int nopllcalc = 0;
-	int hsync_start, hsync_fudge, bytpp, hsync_wid, vsync_wid;
+	int hsync_start, hsync_fudge, hsync_wid, vsync_wid;
 	int primary_mon = PRIMARY_MONITOR(rinfo);
 	int depth = var_to_depth(mode);
 	int use_rmx = 0;
@ -1730,13 +1724,7 @@ static int radeonfb_set_par(struct fb_info *info)
 	else if (vsync_wid > 0x1f)	/* max */
 		vsync_wid = 0x1f;

-	hSyncPol = mode->sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
-	vSyncPol = mode->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
-
-	cSync = mode->sync & FB_SYNC_COMP_HIGH_ACT ? (1 << 4) : 0;
-
 	format = radeon_get_dstbpp(depth);
-	bytpp = mode->bits_per_pixel >> 3;

 	if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD))
 		hsync_fudge = hsync_fudge_fp[format-1];
@ -2548,16 +2536,6 @@ static void radeonfb_pci_unregister(struct pci_dev *pdev)
 	if (rinfo->mon2_EDID)
 		sysfs_remove_bin_file(&rinfo->pdev->dev.kobj, &edid2_attr);

-#if 0
-	/* restore original state
-	 * 
-	 * Doesn't quite work yet, I suspect if we come from a legacy
-	 * VGA mode (or worse, text mode), we need to do some VGA black
-	 * magic here that I know nothing about. --BenH
-	 */
-        radeon_write_mode (rinfo, &rinfo->init_state, 1);
- #endif
-
 	del_timer_sync(&rinfo->lvds_timer);
 	arch_phys_wc_del(rinfo->wc_cookie);
        unregister_framebuffer(info);
--- a/drivers/video/fbdev/kyro/STG4000OverlayDevice.c
+++ b/drivers/video/fbdev/kyro/STG4000OverlayDevice.c
@ -331,7 +331,7 @@ int SetOverlayViewPort(volatile STG4000REG __iomem *pSTGReg,
 	u32 ulScale;
 	u32 ulLeft, ulRight;
 	u32 ulSrcLeft, ulSrcRight;
-	u32 ulScaleLeft, ulScaleRight;
+	u32 ulScaleLeft;
 	u32 ulhDecim;
 	u32 ulsVal;
 	u32 ulVertDecFactor;
@ -470,7 +470,6 @@ int SetOverlayViewPort(volatile STG4000REG __iomem *pSTGReg,
 		 * round down the pixel pos to the nearest 8 pixels.
 		 */
 		ulScaleLeft = ulSrcLeft;
-		ulScaleRight = ulSrcRight;

 		/* shift fxscale until it is in the range of the scaler */
 		ulhDecim = 0;
--- a/drivers/video/fbdev/matrox/matroxfb_base.c
+++ b/drivers/video/fbdev/matrox/matroxfb_base.c
@ -1376,6 +1376,12 @@ static struct video_board vbG200 = {
 	.accelID = FB_ACCEL_MATROX_MGAG200,
 	.lowlevel = &matrox_G100
 };
+static struct video_board vbG200eW = {
+	.maxvram = 0x800000,
+	.maxdisplayable = 0x800000,
+	.accelID = FB_ACCEL_MATROX_MGAG200,
+	.lowlevel = &matrox_G100
+};
 /* from doc it looks like that accelerator can draw only to low 16MB :-( Direct accesses & displaying are OK for
   whole 32MB */
 static struct video_board vbG400 = {
@ -1494,6 +1500,13 @@ static struct board {
 		MGA_G200,
 		&vbG200,
 		"MGA-G200 (PCI)"},
+	{PCI_VENDOR_ID_MATROX,	0x0532,	0xFF,
+		0,			0,
+		DEVF_G200,
+		250000,
+		MGA_G200,
+		&vbG200eW,
+		"MGA-G200eW (PCI)"},
 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,	0xFF,
 		PCI_SS_VENDOR_ID_MATROX,	PCI_SS_ID_MATROX_GENERIC,
 		DEVF_G200,
@ -2136,6 +2149,8 @@ static const struct pci_device_id matroxfb_devices[] = {
 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_PCI,
 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
+	{PCI_VENDOR_ID_MATROX,	0x0532,
+		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G200_AGP,
 		PCI_ANY_ID,	PCI_ANY_ID,	0, 0, 0},
 	{PCI_VENDOR_ID_MATROX,	PCI_DEVICE_ID_MATROX_G400,
--- a/drivers/video/fbdev/mmp/hw/mmp_ctrl.h
+++ b/drivers/video/fbdev/mmp/hw/mmp_ctrl.h
@ -1406,7 +1406,7 @@ struct mmphw_ctrl {

 	/*pathes*/
 	int path_num;
-	struct mmphw_path_plat path_plats[0];
+	struct mmphw_path_plat path_plats[];
 };

 static inline int overlay_is_vid(struct mmp_overlay *overlay)
--- a/drivers/video/fbdev/pxa168fb.c
+++ b/drivers/video/fbdev/pxa168fb.c
@ -779,7 +779,6 @@ static int pxa168fb_remove(struct platform_device *pdev)
 {
 	struct pxa168fb_info *fbi = platform_get_drvdata(pdev);
 	struct fb_info *info;
-	int irq;
 	unsigned int data;

 	if (!fbi)
@ -799,8 +798,6 @@ static int pxa168fb_remove(struct platform_device *pdev)
 	if (info->cmap.len)
 		fb_dealloc_cmap(&info->cmap);

-	irq = platform_get_irq(pdev, 0);
-
 	dma_free_wc(fbi->dev, info->fix.smem_len,
 		    info->screen_base, info->fix.smem_start);

--- a/drivers/video/fbdev/sh_mobile_lcdcfb.c
+++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c
@ -1572,7 +1572,7 @@ sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
 	info->flags = FBINFO_FLAG_DEFAULT;
 	info->fbops = &sh_mobile_lcdc_overlay_ops;
 	info->device = priv->dev;
-	info->screen_base = ovl->fb_mem;
+	info->screen_buffer = ovl->fb_mem;
 	info->par = ovl;

 	/* Initialize fixed screen information. Restrict pan to 2 lines steps
@ -2056,7 +2056,7 @@ sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
 	info->flags = FBINFO_FLAG_DEFAULT;
 	info->fbops = &sh_mobile_lcdc_ops;
 	info->device = priv->dev;
-	info->screen_base = ch->fb_mem;
+	info->screen_buffer = ch->fb_mem;
 	info->pseudo_palette = &ch->pseudo_palette;
 	info->par = ch;

--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@ -89,7 +89,7 @@ struct ssd1307fb_par {

 struct ssd1307fb_array {
 	u8	type;
-	u8	data[0];
+	u8	data[];
 };

 static const struct fb_fix_screeninfo ssd1307fb_fix = {
--- a/drivers/video/fbdev/w100fb.c
+++ b/drivers/video/fbdev/w100fb.c
@ -61,9 +61,9 @@ struct w100_pll_info *w100_get_xtal_table(unsigned int freq);
 #define BITS_PER_PIXEL    16

 /* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */
-static void *remapped_base;
-static void *remapped_regs;
-static void *remapped_fbuf;
+static void __iomem *remapped_base;
+static void __iomem *remapped_regs;
+static void __iomem *remapped_fbuf;

 #define REMAPPED_FB_LEN   0x15ffff

@ -635,7 +635,7 @@ static int w100fb_resume(struct platform_device *dev)
 #endif


-int w100fb_probe(struct platform_device *pdev)
+static int w100fb_probe(struct platform_device *pdev)
 {
 	int err = -EIO;
 	struct w100fb_mach_info *inf;
@ -807,10 +807,11 @@ static int w100fb_remove(struct platform_device *pdev)

 static void w100_soft_reset(void)
 {
-	u16 val = readw((u16 *) remapped_base + cfgSTATUS);
-	writew(val | 0x08, (u16 *) remapped_base + cfgSTATUS);
+	u16 val = readw((u16 __iomem *)remapped_base + cfgSTATUS);
+
+	writew(val | 0x08, (u16 __iomem *)remapped_base + cfgSTATUS);
 	udelay(100);
-	writew(0x00, (u16 *) remapped_base + cfgSTATUS);
+	writew(0x00, (u16 __iomem *)remapped_base + cfgSTATUS);
 	udelay(100);
 }

@ -1022,7 +1023,8 @@ struct w100_pll_info *w100_get_xtal_table(unsigned int freq)
 			return pll_entry->pll_table;
 		pll_entry++;
 	} while (pll_entry->xtal_freq);
-	return 0;
+
+	return NULL;
 }


--- a/drivers/video/fbdev/wm8505fb.c
+++ b/drivers/video/fbdev/wm8505fb.c
@ -339,7 +339,7 @@ static int wm8505fb_probe(struct platform_device *pdev)

 	fbi->fb.fix.smem_start		= fb_mem_phys;
 	fbi->fb.fix.smem_len		= fb_mem_len;
-	fbi->fb.screen_base		= fb_mem_virt;
+	fbi->fb.screen_buffer		= fb_mem_virt;
 	fbi->fb.screen_size		= fb_mem_len;

 	fbi->contrast = 0x10;
--- a/include/drm/bridge/mhl.h
+++ b/include/drm/bridge/mhl.h
@ -327,13 +327,13 @@ struct mhl_burst_bits_per_pixel_fmt {
 	struct {
 		u8 stream_id;
 		u8 pixel_format;
-	} __packed desc[0];
+	} __packed desc[];
 } __packed;

 struct mhl_burst_emsc_support {
 	struct mhl3_burst_header hdr;
 	u8 num_entries;
-	__be16 burst_id[0];
+	__be16 burst_id[];
 } __packed;

 struct mhl_burst_audio_descr {
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@ -213,8 +213,7 @@ drm_fb_helper_from_client(struct drm_client_dev *client)
 #ifdef CONFIG_DRM_FBDEV_EMULATION
 void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
 			   const struct drm_fb_helper_funcs *funcs);
-int drm_fb_helper_init(struct drm_device *dev,
-		       struct drm_fb_helper *helper, int max_conn);
+int drm_fb_helper_init(struct drm_device *dev, struct drm_fb_helper *helper);
 void drm_fb_helper_fini(struct drm_fb_helper *helper);
 int drm_fb_helper_blank(int blank, struct fb_info *info);
 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
@ -279,8 +278,7 @@ static inline void drm_fb_helper_prepare(struct drm_device *dev,
 }

 static inline int drm_fb_helper_init(struct drm_device *dev,
-		       struct drm_fb_helper *helper,
-		       int max_conn)
+		       struct drm_fb_helper *helper)
 {
 	/* So drivers can use it to free the struct */
 	helper->dev = dev;
@ -453,27 +451,6 @@ drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)

 #endif

-/* TODO: There's a todo entry to remove these three */
-static inline int
-drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
-{
-	return 0;
-}
-
-static inline int
-drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,
-				struct drm_connector *connector)
-{
-	return 0;
-}
-
-static inline int
-drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
-				   struct drm_connector *connector)
-{
-	return 0;
-}
-
 /**
 * drm_fb_helper_remove_conflicting_framebuffers - remove firmware-configured framebuffers
 * @a: memory range, users of which are to be removed
--- a/include/drm/drm_hdcp.h
+++ b/include/drm/drm_hdcp.h
@ -276,7 +276,7 @@ void drm_hdcp_cpu_to_be24(u8 seq_num[HDCP_2_2_SEQ_NUM_LEN], u32 val)
 #define DRM_HDCP_2_VRL_LENGTH_SIZE		3
 #define DRM_HDCP_2_DCP_SIG_SIZE			384
 #define DRM_HDCP_2_NO_OF_DEV_PLUS_RESERVED_SZ	4
-#define DRM_HDCP_2_KSV_COUNT_2_LSBITS(byte)	(((byte) & 0xC) >> 6)
+#define DRM_HDCP_2_KSV_COUNT_2_LSBITS(byte)	(((byte) & 0xC0) >> 6)

 struct hdcp_srm_header {
 	u8 srm_id;
@ -288,8 +288,8 @@ struct hdcp_srm_header {
 struct drm_device;
 struct drm_connector;

-bool drm_hdcp_check_ksvs_revoked(struct drm_device *dev,
-				 u8 *ksvs, u32 ksv_count);
+int drm_hdcp_check_ksvs_revoked(struct drm_device *dev,
+				u8 *ksvs, u32 ksv_count);
 int drm_connector_attach_content_protection_property(
 		struct drm_connector *connector, bool hdcp_content_type);
 void drm_hdcp_update_content_protection(struct drm_connector *connector,
--- a/include/drm/drm_pci.h
+++ b/include/drm/drm_pci.h
@ -45,10 +45,6 @@ struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
 				     size_t align);
 void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);

-int drm_get_pci_dev(struct pci_dev *pdev,
-		    const struct pci_device_id *ent,
-		    struct drm_driver *driver);
-
 #else

 static inline struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev,
@ -62,13 +58,6 @@ static inline void drm_pci_free(struct drm_device *dev,
 {
 }

-static inline int drm_get_pci_dev(struct pci_dev *pdev,
-				  const struct pci_device_id *ent,
-				  struct drm_driver *driver)
-{
-	return -ENOSYS;
-}
-
 #endif

 #endif /* _DRM_PCI_H_ */
--- a/include/drm/drm_simple_kms_helper.h
+++ b/include/drm/drm_simple_kms_helper.h
@ -181,4 +181,8 @@ int drm_simple_display_pipe_init(struct drm_device *dev,
 			const uint64_t *format_modifiers,
 			struct drm_connector *connector);

+int drm_simple_encoder_init(struct drm_device *dev,
+			    struct drm_encoder *encoder,
+			    int encoder_type);
+
 #endif /* __LINUX_DRM_SIMPLE_KMS_HELPER_H */
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@ -42,18 +42,6 @@ struct dma_buf_ops {
 	  */
 	bool cache_sgt_mapping;

-	/**
-	 * @dynamic_mapping:
-	 *
-	 * If true the framework makes sure that the map/unmap_dma_buf
-	 * callbacks are always called with the dma_resv object locked.
-	 *
-	 * If false the framework makes sure that the map/unmap_dma_buf
-	 * callbacks are always called without the dma_resv object locked.
-	 * Mutual exclusive with @cache_sgt_mapping.
-	 */
-	bool dynamic_mapping;
-
 	/**
 	 * @attach:
 	 *
@ -93,14 +81,43 @@ struct dma_buf_ops {
 	 */
 	void (*detach)(struct dma_buf *, struct dma_buf_attachment *);

+	/**
+	 * @pin:
+	 *
+	 * This is called by dma_buf_pin and lets the exporter know that the
+	 * DMA-buf can't be moved any more.
+	 *
+	 * This is called with the dmabuf->resv object locked and is mutual
+	 * exclusive with @cache_sgt_mapping.
+	 *
+	 * This callback is optional and should only be used in limited use
+	 * cases like scanout and not for temporary pin operations.
+	 *
+	 * Returns:
+	 *
+	 * 0 on success, negative error code on failure.
+	 */
+	int (*pin)(struct dma_buf_attachment *attach);
+
+	/**
+	 * @unpin:
+	 *
+	 * This is called by dma_buf_unpin and lets the exporter know that the
+	 * DMA-buf can be moved again.
+	 *
+	 * This is called with the dmabuf->resv object locked and is mutual
+	 * exclusive with @cache_sgt_mapping.
+	 *
+	 * This callback is optional.
+	 */
+	void (*unpin)(struct dma_buf_attachment *attach);
+
 	/**
 	 * @map_dma_buf:
 	 *
 	 * This is called by dma_buf_map_attachment() and is used to map a
 	 * shared &dma_buf into device address space, and it is mandatory. It
-	 * can only be called if @attach has been called successfully. This
-	 * essentially pins the DMA buffer into place, and it cannot be moved
-	 * any more
+	 * can only be called if @attach has been called successfully.
 	 *
 	 * This call may sleep, e.g. when the backing storage first needs to be
 	 * allocated, or moved to a location suitable for all currently attached
@ -141,9 +158,8 @@ struct dma_buf_ops {
 	 *
 	 * This is called by dma_buf_unmap_attachment() and should unmap and
 	 * release the &sg_table allocated in @map_dma_buf, and it is mandatory.
-	 * It should also unpin the backing storage if this is the last mapping
-	 * of the DMA buffer, it the exporter supports backing storage
-	 * migration.
+	 * For static dma_buf handling this might also unpins the backing
+	 * storage if this is the last mapping of the DMA buffer.
 	 */
 	void (*unmap_dma_buf)(struct dma_buf_attachment *,
 			      struct sg_table *,
@ -311,6 +327,34 @@ struct dma_buf {
 	} cb_excl, cb_shared;
 };

+/**
+ * struct dma_buf_attach_ops - importer operations for an attachment
+ * @move_notify: [optional] notification that the DMA-buf is moving
+ *
+ * Attachment operations implemented by the importer.
+ */
+struct dma_buf_attach_ops {
+	/**
+	 * @move_notify
+	 *
+	 * If this callback is provided the framework can avoid pinning the
+	 * backing store while mappings exists.
+	 *
+	 * This callback is called with the lock of the reservation object
+	 * associated with the dma_buf held and the mapping function must be
+	 * called with this lock held as well. This makes sure that no mapping
+	 * is created concurrently with an ongoing move operation.
+	 *
+	 * Mappings stay valid and are not directly affected by this callback.
+	 * But the DMA-buf can now be in a different physical location, so all
+	 * mappings should be destroyed and re-created as soon as possible.
+	 *
+	 * New mappings can be created after this callback returns, and will
+	 * point to the new location of the DMA-buf.
+	 */
+	void (*move_notify)(struct dma_buf_attachment *attach);
+};
+
 /**
 * struct dma_buf_attachment - holds device-buffer attachment data
 * @dmabuf: buffer for this attachment.
@ -319,8 +363,9 @@ struct dma_buf {
 * @sgt: cached mapping.
 * @dir: direction of cached mapping.
 * @priv: exporter specific attachment data.
- * @dynamic_mapping: true if dma_buf_map/unmap_attachment() is called with the
- * dma_resv lock held.
+ * @importer_ops: importer operations for this attachment, if provided
+ * dma_buf_map/unmap_attachment() must be called with the dma_resv lock held.
+ * @importer_priv: importer specific attachment data.
 *
 * This structure holds the attachment information between the dma_buf buffer
 * and its user device(s). The list contains one attachment struct per device
@ -337,7 +382,8 @@ struct dma_buf_attachment {
 	struct list_head node;
 	struct sg_table *sgt;
 	enum dma_data_direction dir;
-	bool dynamic_mapping;
+	const struct dma_buf_attach_ops *importer_ops;
+	void *importer_priv;
 	void *priv;
 };

@ -399,7 +445,7 @@ static inline void get_dma_buf(struct dma_buf *dmabuf)
 */
 static inline bool dma_buf_is_dynamic(struct dma_buf *dmabuf)
 {
-	return dmabuf->ops->dynamic_mapping;
+	return !!dmabuf->ops->pin;
 }

 /**
@ -413,16 +459,19 @@ static inline bool dma_buf_is_dynamic(struct dma_buf *dmabuf)
 static inline bool
 dma_buf_attachment_is_dynamic(struct dma_buf_attachment *attach)
 {
-	return attach->dynamic_mapping;
+	return !!attach->importer_ops;
 }

 struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
 					  struct device *dev);
 struct dma_buf_attachment *
 dma_buf_dynamic_attach(struct dma_buf *dmabuf, struct device *dev,
-		       bool dynamic_mapping);
+		       const struct dma_buf_attach_ops *importer_ops,
+		       void *importer_priv);
 void dma_buf_detach(struct dma_buf *dmabuf,
 		    struct dma_buf_attachment *attach);
+int dma_buf_pin(struct dma_buf_attachment *attach);
+void dma_buf_unpin(struct dma_buf_attachment *attach);

 struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info);

--- a/include/linux/platform_data/simplefb.h
+++ b/include/linux/platform_data/simplefb.h
@ -10,7 +10,7 @@

 #include <drm/drm_fourcc.h>
 #include <linux/fb.h>
-#include <linux/kernel.h>
+#include <linux/types.h>

 /* format array, use it to initialize a "struct simplefb_format" array */
 #define SIMPLEFB_FORMATS \
--- a/include/video/mmp_disp.h
+++ b/include/video/mmp_disp.h
@ -231,7 +231,7 @@ struct mmp_path {

 	/* layers */
 	int overlay_num;
-	struct mmp_overlay overlays[0];
+	struct mmp_overlay overlays[];
 };

 extern struct mmp_path *mmp_get_path(const char *name);