Merge tag 'staging-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here is the big set of staging driver updates for 5.18-rc1.

  Loads of tiny cleanups for almost all staging drivers in here, nothing
  major at all. Highlights include:

   - remove the ashmem Android driver. It is long-dead and if there are
     any legacy userspace applications still using it, the Android
     kernel images will maintain it, the community shouldn't care about
     it anymore

   - wfx wifi driver major cleanups. Should be ready to merge out of
     staging soon, and will coordinate with the wifi maintainers after
     -rc1 is out

   - major cleanups and unwinding of the layers of the r8188eu driver.
     It's amazing just how many unneeded layers of abstraction is in
     there, just when we think it's done, another is found...

   - lots of tiny coding style cleanups in many other staging drivers.

  All have been in linux-next for a while with no reported problems"

* tag 'staging-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (455 commits)
  staging: r8188eu: remove unnecessary memset in r8188eu
  staging: greybus: introduce pwm_ops::apply
  staging: rts5208: Resolve checkpatch.pl issues.
  staging: sm750fb: fix naming style
  staging: fbtft: Consider type of init sequence values in fbtft_init_display()
  staging: fbtft: Constify buf parameter in fbtft_dbg_hex()
  staging: mmal-vchiq: clear redundant item named bulk_scratch
  mips: dts: ralink: add MT7621 SoC
  staging: r8188eu: remove some unused local ieee80211 macros
  staging: r8188eu: make rtl8188e_process_phy_info static
  staging: r8188eu: remove unused function prototype
  staging: r8188eu: remove three unused receive defines
  staging: r8188eu: remove unnecessary initializations
  staging: rtl8192e: Fix spelling mistake "RESQUEST" -> "REQUEST"
  MAINTAINERS: remove the obsolete file entry for staging in ANDROID DRIVERS
  staging: r8188eu: proper error handling in rtw_init_drv_sw
  staging: r8188eu: call _cancel_timer_ex from _rtw_free_recv_priv
  staging: vt6656: Removed unused variable vt3342_vnt_threshold
  staging: vt6656: Removed unused variable bb_vga_0
  staging: remove ashmem
  ...

2 files changed, 149 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
index 915f84efd763..0c0b0ae5e2ac 100644
--- a/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
+++ b/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
@@ -22,6 +22,11 @@ description: |
 
   The clocks are provided inside a system controller node.
 
+  This node is also a reset provider for all the peripherals.
+
+  Reset related bits are defined in:
+  [2]: <include/dt-bindings/reset/mt7621-reset.h>.
+
 properties:
   compatible:
     items:
@@ -37,6 +42,12 @@ properties:
       clocks.
     const: 1
 
+  "#reset-cells":
+    description:
+      The first cell indicates the reset bit within the register, see
+      [2] for available resets.
+    const: 1
+
   ralink,memctl:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
@@ -61,6 +72,7 @@ examples:
       compatible = "mediatek,mt7621-sysc", "syscon";
       reg = <0x0 0x100>;
       #clock-cells = <1>;
+      #reset-cells = <1>;
       ralink,memctl = <&memc>;
       clock-output-names = "xtal", "cpu", "bus",
                            "50m", "125m", "150m",
diff --git a/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml b/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml
new file mode 100644
index 000000000000..105725a127ab
--- /dev/null
+++ b/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2020, Silicon Laboratories, Inc.
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/staging/net/wireless/silabs,wfx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silicon Labs WFxxx devicetree bindings
+
+maintainers:
+  - Jérôme Pouiller <jerome.pouiller@silabs.com>
+
+description: >
+  Support for the Wifi chip WFxxx from Silicon Labs. Currently, the only device
+  from the WFxxx series is the WF200 described here:
+     https://www.silabs.com/documents/public/data-sheets/wf200-datasheet.pdf
+
+  The WF200 can be connected via SPI or via SDIO.
+
+  For SDIO:
+
+    Declaring the WFxxx chip in device tree is mandatory (usually, the VID/PID is
+    sufficient for the SDIO devices).
+
+    It is recommended to declare a mmc-pwrseq on SDIO host above WFx. Without
+    it, you may encounter issues during reboot. The mmc-pwrseq should be
+    compatible with mmc-pwrseq-simple. Please consult
+    Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.yaml for more
+    information.
+
+  For SPI:
+
+    In add of the properties below, please consult
+    Documentation/devicetree/bindings/spi/spi-controller.yaml for optional SPI
+    related properties.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - silabs,brd4001a # WGM160P Evaluation Board
+          - silabs,brd8022a # WF200 Evaluation Board
+          - silabs,brd8023a # WFM200 Evaluation Board
+      - const: silabs,wf200 # Chip alone without antenna
+
+  reg:
+    description:
+      When used on SDIO bus, <reg> must be set to 1. When used on SPI bus, it is
+      the chip select address of the device as defined in the SPI devices
+      bindings.
+    maxItems: 1
+
+  spi-max-frequency: true
+
+  interrupts:
+    description: The interrupt line. Should be IRQ_TYPE_EDGE_RISING. When SPI is
+      used, this property is required. When SDIO is used, the "in-band"
+      interrupt provided by the SDIO bus is used unless an interrupt is defined
+      in the Device Tree.
+    maxItems: 1
+
+  reset-gpios:
+    description: (SPI only) Phandle of gpio that will be used to reset chip
+      during probe. Without this property, you may encounter issues with warm
+      boot.
+
+      For SDIO, the reset gpio should declared using a mmc-pwrseq.
+    maxItems: 1
+
+  wakeup-gpios:
+    description: Phandle of gpio that will be used to wake-up chip. Without this
+      property, driver will disable most of power saving features.
+    maxItems: 1
+
+  silabs,antenna-config-file:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: Use an alternative file for antenna configuration (aka
+      "Platform Data Set" in Silabs jargon). Default depends of "compatible"
+      string. For "silabs,wf200", the default is 'wf200.pds'.
+
+  local-mac-address: true
+
+  mac-address: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        wifi@0 {
+            compatible = "silabs,brd8022a", "silabs,wf200";
+            pinctrl-names = "default";
+            pinctrl-0 = <&wfx_irq &wfx_gpios>;
+            reg = <0>;
+            interrupts-extended = <&gpio 16 IRQ_TYPE_EDGE_RISING>;
+            wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
+            reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+            spi-max-frequency = <42000000>;
+        };
+    };
+
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    wfx_pwrseq: wfx_pwrseq {
+        compatible = "mmc-pwrseq-simple";
+        pinctrl-names = "default";
+        pinctrl-0 = <&wfx_reset>;
+        reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+    };
+
+    mmc {
+        mmc-pwrseq = <&wfx_pwrseq>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        wifi@1 {
+            compatible = "silabs,brd8022a", "silabs,wf200";
+            pinctrl-names = "default";
+            pinctrl-0 = <&wfx_wakeup>;
+            reg = <1>;
+            wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
+        };
+    };
+...