Merge branch 'next' into for-linus

Prepare input updates for 6.9 merge window.

Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml

@@ -49,7 +49,6 @@ patternProperties:
     $ref: input.yaml#
     properties:
       label:
-        $ref: /schemas/types.yaml#/definitions/string
         description: Descriptive name of the key
 
       linux,code: true

Documentation/devicetree/bindings/input/atmel,captouch.txt

-Device tree bindings for Atmel capacitive touch device, typically
-an Atmel touch sensor connected to AtmegaXX MCU running firmware
-based on Qtouch library.
-
-The node for this device must be a child of a I2C controller node, as the
-device communicates via I2C.
-
-Required properties:
-
-	compatible:	Must be "atmel,captouch".
-	reg:		The I2C slave address of the device.
-	interrupts:	Property describing the interrupt line the device
-			is connected to. The device only has one interrupt
-			source.
-	linux,keycodes:	Specifies an array of numeric keycode values to
-			be used for reporting button presses. The array can
-			contain up to 8 entries.
-
-Optional properties:
-
-	autorepeat:	Enables the Linux input system's autorepeat
-			feature on the input device.
-
-Example:
-
-	atmel-captouch@51 {
-		compatible = "atmel,captouch";
-		reg = <0x51>;
-		interrupt-parent = <&tlmm>;
-		interrupts = <67 IRQ_TYPE_EDGE_FALLING>;
-		linux,keycodes = <BTN_0>, <BTN_1>,
-			<BTN_2>, <BTN_3>,
-			<BTN_4>, <BTN_5>,
-			<BTN_6>, <BTN_7>;
-		autorepeat;
-	};

Documentation/devicetree/bindings/input/atmel,captouch.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/atmel,captouch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel capacitive touch device
+
+maintainers:
+  - Dharma balasubiramani <dharma.b@microchip.com>
+
+description:
+  Atmel capacitive touch device, typically an Atmel touch sensor connected to
+  AtmegaXX MCU running firmware based on Qtouch library.
+
+allOf:
+  - $ref: input.yaml#
+
+properties:
+  compatible:
+    const: atmel,captouch
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  linux,keycodes:
+    minItems: 1
+    maxItems: 8
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - linux,keycodes
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/input/linux-event-codes.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      touch@51 {
+        compatible = "atmel,captouch";
+        reg = <0x51>;
+        interrupt-parent = <&tlmm>;
+        interrupts = <67 IRQ_TYPE_EDGE_FALLING>;
+        linux,keycodes = <BTN_0>, <BTN_1>,
+                         <BTN_2>, <BTN_3>,
+                         <BTN_4>, <BTN_5>,
+                         <BTN_6>, <BTN_7>;
+        autorepeat;
+      };
+    };

Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/samsung,s3c6410-keypad.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung SoC series Keypad Controller
+
+description:
+  Samsung SoC Keypad controller is used to interface a SoC with a matrix-type
+  keypad device. The keypad controller supports multiple row and column lines.
+  A key can be placed at each intersection of a unique row and a unique column.
+  The keypad controller can sense a key-press and key-release and report the
+  event using a interrupt to the cpu.
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+  compatible:
+    enum:
+      - samsung,s3c6410-keypad
+      - samsung,s5pv210-keypad
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: keypad
+
+  interrupts:
+    maxItems: 1
+
+  wakeup-source: true
+
+  linux,input-no-autorepeat:
+    type: boolean
+    description:
+      Do no enable autorepeat feature.
+
+  linux,input-wakeup:
+    type: boolean
+    deprecated: true
+
+  samsung,keypad-num-columns:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Number of column lines connected to the keypad controller.
+
+  samsung,keypad-num-rows:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Number of row lines connected to the keypad controller.
+
+patternProperties:
+  '^key-[0-9a-z]+$':
+    type: object
+    $ref: input.yaml#
+    additionalProperties: false
+    description:
+      Each key connected to the keypad controller is represented as a child
+      node to the keypad controller device node.
+
+    properties:
+      keypad,column:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: The column number to which the key is connected.
+
+      keypad,row:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: The row number to which the key is connected.
+
+      linux,code: true
+
+    required:
+      - keypad,column
+      - keypad,row
+      - linux,code
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - samsung,keypad-num-columns
+  - samsung,keypad-num-rows
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos4.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    keypad@100a0000 {
+        compatible = "samsung,s5pv210-keypad";
+        reg = <0x100a0000 0x100>;
+        interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clock CLK_KEYIF>;
+        clock-names = "keypad";
+
+        samsung,keypad-num-rows = <2>;
+        samsung,keypad-num-columns = <8>;
+        linux,input-no-autorepeat;
+        wakeup-source;
+
+        key-1 {
+            keypad,row = <0>;
+            keypad,column = <3>;
+            linux,code = <2>;
+        };
+
+        key-2 {
+            keypad,row = <0>;
+            keypad,column = <4>;
+            linux,code = <3>;
+        };
+    };

Documentation/devicetree/bindings/input/samsung-keypad.txt

-* Samsung's Keypad Controller device tree bindings
-
-Samsung's Keypad controller is used to interface a SoC with a matrix-type
-keypad device. The keypad controller supports multiple row and column lines.
-A key can be placed at each intersection of a unique row and a unique column.
-The keypad controller can sense a key-press and key-release and report the
-event using a interrupt to the cpu.
-
-Required SoC Specific Properties:
-- compatible: should be one of the following
-  - "samsung,s3c6410-keypad": For controllers compatible with s3c6410 keypad
-    controller.
-  - "samsung,s5pv210-keypad": For controllers compatible with s5pv210 keypad
-    controller.
-
-- reg: physical base address of the controller and length of memory mapped
-  region.
-
-- interrupts: The interrupt number to the cpu.
-
-Required Board Specific Properties:
-- samsung,keypad-num-rows: Number of row lines connected to the keypad
-  controller.
-
-- samsung,keypad-num-columns: Number of column lines connected to the
-  keypad controller.
-
-- Keys represented as child nodes: Each key connected to the keypad
-  controller is represented as a child node to the keypad controller
-  device node and should include the following properties.
-  - keypad,row: the row number to which the key is connected.
-  - keypad,column: the column number to which the key is connected.
-  - linux,code: the key-code to be reported when the key is pressed
-    and released.
-
-- pinctrl-0: Should specify pin control groups used for this controller.
-- pinctrl-names: Should contain only one value - "default".
-
-Optional Properties:
-- wakeup-source: use any event on keypad as wakeup event.
-		 (Legacy property supported: "linux,input-wakeup")
-
-Optional Properties specific to linux:
-- linux,keypad-no-autorepeat: do no enable autorepeat feature.
-
-
-Example:
-	keypad@100a0000 {
-		compatible = "samsung,s5pv210-keypad";
-		reg = <0x100A0000 0x100>;
-		interrupts = <173>;
-		samsung,keypad-num-rows = <2>;
-		samsung,keypad-num-columns = <8>;
-		linux,input-no-autorepeat;
-		wakeup-source;
-
-		pinctrl-names = "default";
-		pinctrl-0 = <&keypad_rows &keypad_columns>;
-
-		key_1 {
-			keypad,row = <0>;
-			keypad,column = <3>;
-			linux,code = <2>;
-		};
-
-		key_2 {
-			keypad,row = <0>;
-			keypad,column = <4>;
-			linux,code = <3>;
-		};
-
-		key_3 {
-			keypad,row = <0>;
-			keypad,column = <5>;
-			linux,code = <4>;
-		};
-	};

Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/goodix,gt9916.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Goodix Berlin series touchscreen controller
+
+description: The Goodix Berlin series of touchscreen controllers
+  be connected to either I2C or SPI buses.
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+
+allOf:
+  - $ref: touchscreen.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - goodix,gt9916
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  avdd-supply:
+    description: Analog power supply regulator on AVDD pin
+
+  vddio-supply:
+    description: power supply regulator on VDDIO pin
+
+  spi-max-frequency: true
+  touchscreen-inverted-x: true
+  touchscreen-inverted-y: true
+  touchscreen-size-x: true
+  touchscreen-size-y: true
+  touchscreen-swapped-x-y: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - avdd-supply
+  - touchscreen-size-x
+  - touchscreen-size-y
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      touchscreen@5d {
+        compatible = "goodix,gt9916";
+        reg = <0x5d>;
+        interrupt-parent = <&gpio>;
+        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
+        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
+        avdd-supply = <&ts_avdd>;
+        touchscreen-size-x = <1024>;
+        touchscreen-size-y = <768>;
+      };
+    };
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      num-cs = <1>;
+      cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+      touchscreen@0 {
+        compatible = "goodix,gt9916";
+        reg = <0>;
+        interrupt-parent = <&gpio>;
+        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
+        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
+        avdd-supply = <&ts_avdd>;
+        spi-max-frequency = <1000000>;
+        touchscreen-size-x = <1024>;
+        touchscreen-size-y = <768>;
+      };
+    };
+
+...

Documentation/devicetree/bindings/input/touchscreen/goodix.yaml

@@ -37,8 +37,9 @@ properties:
     maxItems: 1
 
   irq-gpios:
-    description: GPIO pin used for IRQ. The driver uses the interrupt gpio pin
-      as output to reset the device.
+    description: GPIO pin used for IRQ input. Additionally, this line is
+      sampled by the device on reset deassertion to select the I2C client
+      address, thus it can be driven by the host during the reset sequence.
     maxItems: 1
 
   reset-gpios:

Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml

@@ -9,15 +9,14 @@ title: Imagis IST30XXC family touchscreen controller
 maintainers:
   - Markuss Broks <markuss.broks@gmail.com>
 
-allOf:
-  - $ref: touchscreen.yaml#
-
 properties:
   $nodename:
     pattern: "^touchscreen@[0-9a-f]+$"
 
   compatible:
     enum:
+      - imagis,ist3032c
+      - imagis,ist3038b
       - imagis,ist3038c
 
   reg:
@@ -32,6 +31,10 @@ properties:
   vddio-supply:
     description: Power supply regulator for the I2C bus
 
+  linux,keycodes:
+    description: Keycodes for the touch keys
+    maxItems: 5
+
   touchscreen-size-x: true
   touchscreen-size-y: true
   touchscreen-fuzz-x: true
@@ -42,6 +45,18 @@ properties:
 
 additionalProperties: false
 
+allOf:
+  - $ref: touchscreen.yaml#
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: imagis,ist3032c
+    then:
+      properties:
+        linux,keycodes: false
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/input/touchscreen/melfas,mms114.yaml

@@ -17,13 +17,17 @@ properties:
     pattern: "^touchscreen(@.*)?$"
 
   compatible:
-    items:
+    oneOf:
       - enum:
           - melfas,mms114
           - melfas,mms134s
           - melfas,mms136
           - melfas,mms152
           - melfas,mms345l
+      - items:
+          - enum:
+              - melfas,mms252
+          - const: melfas,mms114
 
   reg:
     description: I2C address

Documentation/devicetree/bindings/input/touchscreen/silead,gsl1680.yaml

@@ -31,7 +31,7 @@ properties:
     maxItems: 1
 
   firmware-name:
-    $ref: /schemas/types.yaml#/definitions/string
+    maxItems: 1
     description: >
       File basename for board specific firmware
 

Documentation/devicetree/bindings/power/wakeup-source.txt

@@ -23,7 +23,7 @@ List of legacy properties and respective binding document
 				Documentation/devicetree/bindings/mfd/tc3589x.txt
 				Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
 4. "linux,keypad-wakeup"	Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt
-5. "linux,input-wakeup"		Documentation/devicetree/bindings/input/samsung-keypad.txt
+5. "linux,input-wakeup"		Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml
 6. "nvidia,wakeup-source"	Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt
 
 Examples

drivers/input/gameport/gameport.c

@@ -38,7 +38,7 @@ static DEFINE_MUTEX(gameport_mutex);
 
 static LIST_HEAD(gameport_list);
 
-static struct bus_type gameport_bus;
+static const struct bus_type gameport_bus;
 
 static void gameport_add_port(struct gameport *gameport);
 static void gameport_attach_driver(struct gameport_driver *drv);
@@ -813,7 +813,7 @@ static int gameport_bus_match(struct device *dev, struct device_driver *drv)
 	return !gameport_drv->ignore;
 }
 
-static struct bus_type gameport_bus = {
+static const struct bus_type gameport_bus = {
 	.name		= "gameport",
 	.dev_groups	= gameport_device_groups,
 	.drv_groups	= gameport_driver_groups,

drivers/input/input-leds.c

@@ -18,6 +18,12 @@
 #define VT_TRIGGER(_name)	.trigger = NULL
 #endif
 
+#if IS_ENABLED(CONFIG_SND_CTL_LED)
+#define AUDIO_TRIGGER(_name)	.trigger = _name
+#else
+#define AUDIO_TRIGGER(_name)	.trigger = NULL
+#endif
+
 static const struct {
 	const char *name;
 	const char *trigger;
@@ -29,7 +35,7 @@ static const struct {
 	[LED_KANA]	= { "kana", VT_TRIGGER("kbd-kanalock") },
 	[LED_SLEEP]	= { "sleep" } ,
 	[LED_SUSPEND]	= { "suspend" },
-	[LED_MUTE]	= { "mute" },
+	[LED_MUTE]	= { "mute", AUDIO_TRIGGER("audio-mute") },
 	[LED_MISC]	= { "misc" },
 	[LED_MAIL]	= { "mail" },
 	[LED_CHARGING]	= { "charging" },

drivers/input/input.c

@@ -1918,7 +1918,7 @@ static char *input_devnode(const struct device *dev, umode_t *mode)
 	return kasprintf(GFP_KERNEL, "input/%s", dev_name(dev));
 }
 
-struct class input_class = {
+const struct class input_class = {
 	.name		= "input",
 	.devnode	= input_devnode,
 };
@@ -2629,17 +2629,15 @@ int input_get_new_minor(int legacy_base, unsigned int legacy_num,
 	 * locking is needed here.
 	 */
 	if (legacy_base >= 0) {
-		int minor = ida_simple_get(&input_ida,
-					   legacy_base,
-					   legacy_base + legacy_num,
-					   GFP_KERNEL);
+		int minor = ida_alloc_range(&input_ida, legacy_base,
+					    legacy_base + legacy_num - 1,
+					    GFP_KERNEL);
 		if (minor >= 0 || !allow_dynamic)
 			return minor;
 	}
 
-	return ida_simple_get(&input_ida,
-			      INPUT_FIRST_DYNAMIC_DEV, INPUT_MAX_CHAR_DEVICES,
-			      GFP_KERNEL);
+	return ida_alloc_range(&input_ida, INPUT_FIRST_DYNAMIC_DEV,
+			       INPUT_MAX_CHAR_DEVICES - 1, GFP_KERNEL);
 }
 EXPORT_SYMBOL(input_get_new_minor);
 
@@ -2652,7 +2650,7 @@ EXPORT_SYMBOL(input_get_new_minor);
  */
 void input_free_minor(unsigned int minor)
 {
-	ida_simple_remove(&input_ida, minor);
+	ida_free(&input_ida, minor);
 }
 EXPORT_SYMBOL(input_free_minor);
 

drivers/input/joystick/xpad.c

@@ -127,6 +127,7 @@ static const struct xpad_device {
 	u8 mapping;
 	u8 xtype;
 } xpad_device[] = {
+	/* Please keep this list sorted by vendor and product ID. */
 	{ 0x0079, 0x18d4, "GPD Win 2 X-Box Controller", 0, XTYPE_XBOX360 },
 	{ 0x03eb, 0xff01, "Wooting One (Legacy)", 0, XTYPE_XBOX360 },
 	{ 0x03eb, 0xff02, "Wooting Two (Legacy)", 0, XTYPE_XBOX360 },
@@ -152,9 +153,9 @@ static const struct xpad_device {
 	{ 0x045e, 0x02d1, "Microsoft X-Box One pad", 0, XTYPE_XBOXONE },
 	{ 0x045e, 0x02dd, "Microsoft X-Box One pad (Firmware 2015)", 0, XTYPE_XBOXONE },
 	{ 0x045e, 0x02e3, "Microsoft X-Box One Elite pad", MAP_PADDLES, XTYPE_XBOXONE },
-	{ 0x045e, 0x0b00, "Microsoft X-Box One Elite 2 pad", MAP_PADDLES, XTYPE_XBOXONE },
 	{ 0x045e, 0x02ea, "Microsoft X-Box One S pad", 0, XTYPE_XBOXONE },
 	{ 0x045e, 0x0719, "Xbox 360 Wireless Receiver", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W },
+	{ 0x045e, 0x0b00, "Microsoft X-Box One Elite 2 pad", MAP_PADDLES, XTYPE_XBOXONE },
 	{ 0x045e, 0x0b0a, "Microsoft X-Box Adaptive Controller", MAP_PROFILE_BUTTON, XTYPE_XBOXONE },
 	{ 0x045e, 0x0b12, "Microsoft Xbox Series S|X Controller", MAP_SELECT_BUTTON, XTYPE_XBOXONE },
 	{ 0x046d, 0xc21d, "Logitech Gamepad F310", 0, XTYPE_XBOX360 },
@@ -340,7 +341,6 @@ static const struct xpad_device {
 	{ 0x20d6, 0x2001, "BDA Xbox Series X Wired Controller", 0, XTYPE_XBOXONE },
 	{ 0x20d6, 0x2009, "PowerA Enhanced Wired Controller for Xbox Series X|S", 0, XTYPE_XBOXONE },
 	{ 0x20d6, 0x281f, "PowerA Wired Controller For Xbox 360", 0, XTYPE_XBOX360 },
-	{ 0x2e24, 0x0652, "Hyperkin Duke X-Box One pad", 0, XTYPE_XBOXONE },
 	{ 0x24c6, 0x5000, "Razer Atrox Arcade Stick", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 },
 	{ 0x24c6, 0x5300, "PowerA MINI PROEX Controller", 0, XTYPE_XBOX360 },
 	{ 0x24c6, 0x5303, "Xbox Airflo wired controller", 0, XTYPE_XBOX360 },
@@ -355,9 +355,9 @@ static const struct xpad_device {
 	{ 0x24c6, 0x5502, "Hori Fighting Stick VX Alt", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 },
 	{ 0x24c6, 0x5503, "Hori Fighting Edge", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 },
 	{ 0x24c6, 0x5506, "Hori SOULCALIBUR V Stick", 0, XTYPE_XBOX360 },
-	{ 0x24c6, 0x5510, "Hori Fighting Commander ONE (Xbox 360/PC Mode)", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 },
 	{ 0x24c6, 0x550d, "Hori GEM Xbox controller", 0, XTYPE_XBOX360 },
 	{ 0x24c6, 0x550e, "Hori Real Arcade Pro V Kai 360", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 },
+	{ 0x24c6, 0x5510, "Hori Fighting Commander ONE (Xbox 360/PC Mode)", MAP_TRIGGERS_TO_BUTTONS, XTYPE_XBOX360 },
 	{ 0x24c6, 0x551a, "PowerA FUSION Pro Controller", 0, XTYPE_XBOXONE },
 	{ 0x24c6, 0x561a, "PowerA FUSION Controller", 0, XTYPE_XBOXONE },
 	{ 0x24c6, 0x5b00, "ThrustMaster Ferrari 458 Racing Wheel", 0, XTYPE_XBOX360 },
@@ -366,8 +366,11 @@ static const struct xpad_device {
 	{ 0x24c6, 0x5d04, "Razer Sabertooth", 0, XTYPE_XBOX360 },
 	{ 0x24c6, 0xfafe, "Rock Candy Gamepad for Xbox 360", 0, XTYPE_XBOX360 },
 	{ 0x2563, 0x058d, "OneXPlayer Gamepad", 0, XTYPE_XBOX360 },
+	{ 0x294b, 0x3303, "Snakebyte GAMEPAD BASE X", 0, XTYPE_XBOXONE },
+	{ 0x294b, 0x3404, "Snakebyte GAMEPAD RGB X", 0, XTYPE_XBOXONE },
 	{ 0x2dc8, 0x2000, "8BitDo Pro 2 Wired Controller fox Xbox", 0, XTYPE_XBOXONE },
 	{ 0x2dc8, 0x3106, "8BitDo Pro 2 Wired Controller", 0, XTYPE_XBOX360 },
+	{ 0x2e24, 0x0652, "Hyperkin Duke X-Box One pad", 0, XTYPE_XBOXONE },
 	{ 0x31e3, 0x1100, "Wooting One", 0, XTYPE_XBOX360 },
 	{ 0x31e3, 0x1200, "Wooting Two", 0, XTYPE_XBOX360 },
 	{ 0x31e3, 0x1210, "Wooting Lekker", 0, XTYPE_XBOX360 },
@@ -465,6 +468,10 @@ static const signed short xpad_btn_paddles[] = {
 	{ XPAD_XBOXONE_VENDOR_PROTOCOL((vend), 208) }
 
 static const struct usb_device_id xpad_table[] = {
+	/*
+	 * Please keep this list sorted by vendor ID. Note that there are 2
+	 * macros - XPAD_XBOX360_VENDOR and XPAD_XBOXONE_VENDOR.
+	 */
 	{ USB_INTERFACE_INFO('X', 'B', 0) },	/* Xbox USB-IF not-approved class */
 	XPAD_XBOX360_VENDOR(0x0079),		/* GPD Win 2 controller */
 	XPAD_XBOX360_VENDOR(0x03eb),		/* Wooting Keyboards (Legacy) */
@@ -507,6 +514,7 @@ static const struct usb_device_id xpad_table[] = {
 	XPAD_XBOXONE_VENDOR(0x24c6),		/* PowerA controllers */
 	XPAD_XBOX360_VENDOR(0x2563),		/* OneXPlayer Gamepad */
 	XPAD_XBOX360_VENDOR(0x260d),		/* Dareu H101 */
+       XPAD_XBOXONE_VENDOR(0x294b),            /* Snakebyte */
 	XPAD_XBOX360_VENDOR(0x2c22),		/* Qanba Controllers */
 	XPAD_XBOX360_VENDOR(0x2dc8),            /* 8BitDo Pro 2 Wired Controller */
 	XPAD_XBOXONE_VENDOR(0x2dc8),		/* 8BitDo Pro 2 Wired Controller for Xbox */

drivers/input/keyboard/bcm-keypad.c

@@ -418,7 +418,7 @@ static struct platform_driver bcm_kp_device_driver = {
 	.probe		= bcm_kp_probe,
 	.driver		= {
 		.name	= "bcm-keypad",
-		.of_match_table = of_match_ptr(bcm_kp_of_match),
+		.of_match_table = bcm_kp_of_match,
 	}
 };
 

drivers/input/keyboard/matrix_keypad.c

@@ -28,7 +28,9 @@ struct matrix_keypad {
 	struct input_dev *input_dev;
 	unsigned int row_shift;
 
-	DECLARE_BITMAP(disabled_gpios, MATRIX_MAX_ROWS);
+	unsigned int row_irqs[MATRIX_MAX_ROWS];
+	unsigned int num_row_irqs;
+	DECLARE_BITMAP(wakeup_enabled_irqs, MATRIX_MAX_ROWS);
 
 	uint32_t last_key_state[MATRIX_MAX_COLS];
 	struct delayed_work work;
@@ -85,28 +87,18 @@ static bool row_asserted(const struct matrix_keypad_platform_data *pdata,
 
 static void enable_row_irqs(struct matrix_keypad *keypad)
 {
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
 	int i;
 
-	if (pdata->clustered_irq > 0)
-		enable_irq(pdata->clustered_irq);
-	else {
-		for (i = 0; i < pdata->num_row_gpios; i++)
-			enable_irq(gpio_to_irq(pdata->row_gpios[i]));
-	}
+	for (i = 0; i < keypad->num_row_irqs; i++)
+		enable_irq(keypad->row_irqs[i]);
 }
 
 static void disable_row_irqs(struct matrix_keypad *keypad)
 {
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
 	int i;
 
-	if (pdata->clustered_irq > 0)
-		disable_irq_nosync(pdata->clustered_irq);
-	else {
-		for (i = 0; i < pdata->num_row_gpios; i++)
-			disable_irq_nosync(gpio_to_irq(pdata->row_gpios[i]));
-	}
+	for (i = 0; i < keypad->num_row_irqs; i++)
+		disable_irq_nosync(keypad->row_irqs[i]);
 }
 
 /*
@@ -232,44 +224,20 @@ static void matrix_keypad_stop(struct input_dev *dev)
 
 static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
 {
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	unsigned int gpio;
 	int i;
 
-	if (pdata->clustered_irq > 0) {
-		if (enable_irq_wake(pdata->clustered_irq) == 0)
-			keypad->gpio_all_disabled = true;
-	} else {
-
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			if (!test_bit(i, keypad->disabled_gpios)) {
-				gpio = pdata->row_gpios[i];
-
-				if (enable_irq_wake(gpio_to_irq(gpio)) == 0)
-					__set_bit(i, keypad->disabled_gpios);
-			}
-		}
-	}
+	for_each_clear_bit(i, keypad->wakeup_enabled_irqs, keypad->num_row_irqs)
+		if (enable_irq_wake(keypad->row_irqs[i]) == 0)
+			__set_bit(i, keypad->wakeup_enabled_irqs);
 }
 
 static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)
 {
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	unsigned int gpio;
 	int i;
 
-	if (pdata->clustered_irq > 0) {
-		if (keypad->gpio_all_disabled) {
-			disable_irq_wake(pdata->clustered_irq);
-			keypad->gpio_all_disabled = false;
-		}
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			if (test_and_clear_bit(i, keypad->disabled_gpios)) {
-				gpio = pdata->row_gpios[i];
-				disable_irq_wake(gpio_to_irq(gpio));
-			}
-		}
+	for_each_set_bit(i, keypad->wakeup_enabled_irqs, keypad->num_row_irqs) {
+		disable_irq_wake(keypad->row_irqs[i]);
+		__clear_bit(i, keypad->wakeup_enabled_irqs);
 	}
 }
 
@@ -306,96 +274,83 @@ static int matrix_keypad_init_gpio(struct platform_device *pdev,
 				   struct matrix_keypad *keypad)
 {
 	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i, err;
+	int i, irq, err;
 
 	/* initialized strobe lines as outputs, activated */
 	for (i = 0; i < pdata->num_col_gpios; i++) {
-		err = gpio_request(pdata->col_gpios[i], "matrix_kbd_col");
+		err = devm_gpio_request(&pdev->dev,
+					pdata->col_gpios[i], "matrix_kbd_col");
 		if (err) {
 			dev_err(&pdev->dev,
 				"failed to request GPIO%d for COL%d\n",
 				pdata->col_gpios[i], i);
-			goto err_free_cols;
+			return err;
 		}
 
 		gpio_direction_output(pdata->col_gpios[i], !pdata->active_low);
 	}
 
 	for (i = 0; i < pdata->num_row_gpios; i++) {
-		err = gpio_request(pdata->row_gpios[i], "matrix_kbd_row");
+		err = devm_gpio_request(&pdev->dev,
+					pdata->row_gpios[i], "matrix_kbd_row");
 		if (err) {
 			dev_err(&pdev->dev,
 				"failed to request GPIO%d for ROW%d\n",
 				pdata->row_gpios[i], i);
-			goto err_free_rows;
+			return err;
 		}
 
 		gpio_direction_input(pdata->row_gpios[i]);
 	}
 
 	if (pdata->clustered_irq > 0) {
-		err = request_any_context_irq(pdata->clustered_irq,
+		err = devm_request_any_context_irq(&pdev->dev,
+				pdata->clustered_irq,
 				matrix_keypad_interrupt,
 				pdata->clustered_irq_flags,
 				"matrix-keypad", keypad);
 		if (err < 0) {
 			dev_err(&pdev->dev,
 				"Unable to acquire clustered interrupt\n");
-			goto err_free_rows;
+			return err;
 		}
+
+		keypad->row_irqs[0] = pdata->clustered_irq;
+		keypad->num_row_irqs = 1;
 	} else {
 		for (i = 0; i < pdata->num_row_gpios; i++) {
-			err = request_any_context_irq(
-					gpio_to_irq(pdata->row_gpios[i]),
+			irq = gpio_to_irq(pdata->row_gpios[i]);
+			if (irq < 0) {
+				err = irq;
+				dev_err(&pdev->dev,
+					"Unable to convert GPIO line %i to irq: %d\n",
+					pdata->row_gpios[i], err);
+				return err;
+			}
+
+			err = devm_request_any_context_irq(&pdev->dev,
+					irq,
 					matrix_keypad_interrupt,
 					IRQF_TRIGGER_RISING |
-					IRQF_TRIGGER_FALLING,
+						IRQF_TRIGGER_FALLING,
 					"matrix-keypad", keypad);
 			if (err < 0) {
 				dev_err(&pdev->dev,
 					"Unable to acquire interrupt for GPIO line %i\n",
 					pdata->row_gpios[i]);
-				goto err_free_irqs;
+				return err;
 			}
+
+			keypad->row_irqs[i] = irq;
 		}
+
+		keypad->num_row_irqs = pdata->num_row_gpios;
 	}
 
 	/* initialized as disabled - enabled by input->open */
 	disable_row_irqs(keypad);
-	return 0;
-
-err_free_irqs:
-	while (--i >= 0)
-		free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);
-	i = pdata->num_row_gpios;
-err_free_rows:
-	while (--i >= 0)
-		gpio_free(pdata->row_gpios[i]);
-	i = pdata->num_col_gpios;
-err_free_cols:
-	while (--i >= 0)
-		gpio_free(pdata->col_gpios[i]);
-
-	return err;
-}
-
-static void matrix_keypad_free_gpio(struct matrix_keypad *keypad)
-{
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i;
 
-	if (pdata->clustered_irq > 0) {
-		free_irq(pdata->clustered_irq, keypad);
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++)
-			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);
-	}
-
-	for (i = 0; i < pdata->num_row_gpios; i++)
-		gpio_free(pdata->row_gpios[i]);
-
-	for (i = 0; i < pdata->num_col_gpios; i++)
-		gpio_free(pdata->col_gpios[i]);
+	return 0;
 }
 
 #ifdef CONFIG_OF
@@ -494,12 +449,13 @@ static int matrix_keypad_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);
-	input_dev = input_allocate_device();
-	if (!keypad || !input_dev) {
-		err = -ENOMEM;
-		goto err_free_mem;
-	}
+	keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL);
+	if (!keypad)
+		return -ENOMEM;
+
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev)
+		return -ENOMEM;
 
 	keypad->input_dev = input_dev;
 	keypad->pdata = pdata;
@@ -510,7 +466,6 @@ static int matrix_keypad_probe(struct platform_device *pdev)
 
 	input_dev->name		= pdev->name;
 	input_dev->id.bustype	= BUS_HOST;
-	input_dev->dev.parent	= &pdev->dev;
 	input_dev->open		= matrix_keypad_start;
 	input_dev->close	= matrix_keypad_stop;
 
@@ -520,7 +475,7 @@ static int matrix_keypad_probe(struct platform_device *pdev)
 					 NULL, input_dev);
 	if (err) {
 		dev_err(&pdev->dev, "failed to build keymap\n");
-		goto err_free_mem;
+		return -ENOMEM;
 	}
 
 	if (!pdata->no_autorepeat)
@@ -530,32 +485,16 @@ static int matrix_keypad_probe(struct platform_device *pdev)
 
 	err = matrix_keypad_init_gpio(pdev, keypad);
 	if (err)
-		goto err_free_mem;
+		return err;
 
 	err = input_register_device(keypad->input_dev);
 	if (err)
-		goto err_free_gpio;
+		return err;
 
 	device_init_wakeup(&pdev->dev, pdata->wakeup);
 	platform_set_drvdata(pdev, keypad);
 
 	return 0;
-
-err_free_gpio:
-	matrix_keypad_free_gpio(keypad);
-err_free_mem:
-	input_free_device(input_dev);
-	kfree(keypad);
-	return err;
-}
-
-static void matrix_keypad_remove(struct platform_device *pdev)
-{
-	struct matrix_keypad *keypad = platform_get_drvdata(pdev);
-
-	matrix_keypad_free_gpio(keypad);
-	input_unregister_device(keypad->input_dev);
-	kfree(keypad);
 }
 
 #ifdef CONFIG_OF
@@ -568,7 +507,6 @@ MODULE_DEVICE_TABLE(of, matrix_keypad_dt_match);
 
 static struct platform_driver matrix_keypad_driver = {
 	.probe		= matrix_keypad_probe,
-	.remove_new	= matrix_keypad_remove,
 	.driver		= {
 		.name	= "matrix-keypad",
 		.pm	= pm_sleep_ptr(&matrix_keypad_pm_ops),

drivers/input/misc/88pm80x_onkey.c

+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Marvell 88PM80x ONKEY driver
  *
  * Copyright (C) 2012 Marvell International Ltd.
  * Haojian Zhuang <haojian.zhuang@marvell.com>
  * Qiao Zhou <zhouqiao@marvell.com>
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License. See the file "COPYING" in the main directory of this
- * archive for more details.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/kernel.h>

drivers/input/misc/iqs7222.c

@@ -620,6 +620,118 @@ static const struct iqs7222_dev_desc iqs7222_devs[] = {
 			},
 		},
 	},
+	{
+		.prod_num = IQS7222_PROD_NUM_D,
+		.fw_major = 1,
+		.fw_minor = 2,
+		.touch_link = 1770,
+		.allow_offset = 9,
+		.event_offset = 10,
+		.comms_offset = 11,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 7,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 7,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8700,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 14,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xA000,
+				.num_row = 14,
+				.num_col = 4,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xAE00,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_TPAD] = {
+				.base = 0xB000,
+				.num_row = 1,
+				.num_col = 24,
+			},
+			[IQS7222_REG_GRP_GPIO] = {
+				.base = 0xC000,
+				.num_row = 3,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 12,
+			},
+		},
+	},
+	{
+		.prod_num = IQS7222_PROD_NUM_D,
+		.fw_major = 1,
+		.fw_minor = 1,
+		.touch_link = 1774,
+		.allow_offset = 9,
+		.event_offset = 10,
+		.comms_offset = 11,
+		.reg_grps = {
+			[IQS7222_REG_GRP_STAT] = {
+				.base = IQS7222_SYS_STATUS,
+				.num_row = 1,
+				.num_col = 7,
+			},
+			[IQS7222_REG_GRP_CYCLE] = {
+				.base = 0x8000,
+				.num_row = 7,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_GLBL] = {
+				.base = 0x8700,
+				.num_row = 1,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_BTN] = {
+				.base = 0x9000,
+				.num_row = 14,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_CHAN] = {
+				.base = 0xA000,
+				.num_row = 14,
+				.num_col = 4,
+			},
+			[IQS7222_REG_GRP_FILT] = {
+				.base = 0xAE00,
+				.num_row = 1,
+				.num_col = 2,
+			},
+			[IQS7222_REG_GRP_TPAD] = {
+				.base = 0xB000,
+				.num_row = 1,
+				.num_col = 24,
+			},
+			[IQS7222_REG_GRP_GPIO] = {
+				.base = 0xC000,
+				.num_row = 3,
+				.num_col = 3,
+			},
+			[IQS7222_REG_GRP_SYS] = {
+				.base = IQS7222_SYS_SETUP,
+				.num_row = 1,
+				.num_col = 12,
+			},
+		},
+	},
 	{
 		.prod_num = IQS7222_PROD_NUM_D,
 		.fw_major = 0,

drivers/input/mouse/Kconfig

@@ -439,16 +439,4 @@ config MOUSE_SYNAPTICS_USB
 	  To compile this driver as a module, choose M here: the
 	  module will be called synaptics_usb.
 
-config MOUSE_NAVPOINT_PXA27x
-	tristate "Synaptics NavPoint (PXA27x SSP/SPI)"
-	depends on PXA27x && PXA_SSP
-	help
-	  This driver adds support for the Synaptics NavPoint touchpad connected
-	  to a PXA27x SSP port in SPI slave mode. The device emulates a mouse;
-	  a tap or tap-and-a-half drag gesture emulates the left mouse button.
-	  For example, use the xf86-input-evdev driver for an X pointing device.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called navpoint.
-
 endif

drivers/input/mouse/Makefile

@@ -15,7 +15,6 @@ obj-$(CONFIG_MOUSE_GPIO)		+= gpio_mouse.o
 obj-$(CONFIG_MOUSE_INPORT)		+= inport.o
 obj-$(CONFIG_MOUSE_LOGIBM)		+= logibm.o
 obj-$(CONFIG_MOUSE_MAPLE)		+= maplemouse.o
-obj-$(CONFIG_MOUSE_NAVPOINT_PXA27x)	+= navpoint.o
 obj-$(CONFIG_MOUSE_PC110PAD)		+= pc110pad.o
 obj-$(CONFIG_MOUSE_PS2)			+= psmouse.o
 obj-$(CONFIG_MOUSE_RISCPC)		+= rpcmouse.o

drivers/input/mouse/navpoint.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Synaptics NavPoint (PXA27x SSP/SPI) driver.
- *
- * Copyright (C) 2012 Paul Parsons <lost.distance@yahoo.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/input.h>
-#include <linux/input/navpoint.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/pxa2xx_ssp.h>
-#include <linux/slab.h>
-
-/*
- * Synaptics Modular Embedded Protocol: Module Packet Format.
- * Module header byte 2:0 = Length (# bytes that follow)
- * Module header byte 4:3 = Control
- * Module header byte 7:5 = Module Address
- */
-#define HEADER_LENGTH(byte)	((byte) & 0x07)
-#define HEADER_CONTROL(byte)	(((byte) >> 3) & 0x03)
-#define HEADER_ADDRESS(byte)	((byte) >> 5)
-
-struct navpoint {
-	struct ssp_device	*ssp;
-	struct input_dev	*input;
-	struct device		*dev;
-	struct gpio_desc	*gpiod;
-	int			index;
-	u8			data[1 + HEADER_LENGTH(0xff)];
-};
-
-/*
- * Initialization values for SSCR0_x, SSCR1_x, SSSR_x.
- */
-static const u32 sscr0 = 0
-	| SSCR0_TUM		/* TIM = 1; No TUR interrupts */
-	| SSCR0_RIM		/* RIM = 1; No ROR interrupts */
-	| SSCR0_SSE		/* SSE = 1; SSP enabled */
-	| SSCR0_Motorola	/* FRF = 0; Motorola SPI */
-	| SSCR0_DataSize(16)	/* DSS = 15; Data size = 16-bit */
-	;
-static const u32 sscr1 = 0
-	| SSCR1_SCFR		/* SCFR = 1; SSPSCLK only during transfers */
-	| SSCR1_SCLKDIR		/* SCLKDIR = 1; Slave mode */
-	| SSCR1_SFRMDIR		/* SFRMDIR = 1; Slave mode */
-	| SSCR1_RWOT		/* RWOT = 1; Receive without transmit mode */
-	| SSCR1_RxTresh(1)	/* RFT = 0; Receive FIFO threshold = 1 */
-	| SSCR1_SPH		/* SPH = 1; SSPSCLK inactive 0.5 + 1 cycles */
-	| SSCR1_RIE		/* RIE = 1; Receive FIFO interrupt enabled */
-	;
-static const u32 sssr = 0
-	| SSSR_BCE		/* BCE = 1; Clear BCE */
-	| SSSR_TUR		/* TUR = 1; Clear TUR */
-	| SSSR_EOC		/* EOC = 1; Clear EOC */
-	| SSSR_TINT		/* TINT = 1; Clear TINT */
-	| SSSR_PINT		/* PINT = 1; Clear PINT */
-	| SSSR_ROR		/* ROR = 1; Clear ROR */
-	;
-
-/*
- * MEP Query $22: Touchpad Coordinate Range Query is not supported by
- * the NavPoint module, so sampled values provide the default limits.
- */
-#define NAVPOINT_X_MIN		1278
-#define NAVPOINT_X_MAX		5340
-#define NAVPOINT_Y_MIN		1572
-#define NAVPOINT_Y_MAX		4396
-#define NAVPOINT_PRESSURE_MIN	0
-#define NAVPOINT_PRESSURE_MAX	255
-
-static void navpoint_packet(struct navpoint *navpoint)
-{
-	int finger;
-	int gesture;
-	int x, y, z;
-
-	switch (navpoint->data[0]) {
-	case 0xff:	/* Garbage (packet?) between reset and Hello packet */
-	case 0x00:	/* Module 0, NULL packet */
-		break;
-
-	case 0x0e:	/* Module 0, Absolute packet */
-		finger = (navpoint->data[1] & 0x01);
-		gesture = (navpoint->data[1] & 0x02);
-		x = ((navpoint->data[2] & 0x1f) << 8) | navpoint->data[3];
-		y = ((navpoint->data[4] & 0x1f) << 8) | navpoint->data[5];
-		z = navpoint->data[6];
-		input_report_key(navpoint->input, BTN_TOUCH, finger);
-		input_report_abs(navpoint->input, ABS_X, x);
-		input_report_abs(navpoint->input, ABS_Y, y);
-		input_report_abs(navpoint->input, ABS_PRESSURE, z);
-		input_report_key(navpoint->input, BTN_TOOL_FINGER, finger);
-		input_report_key(navpoint->input, BTN_LEFT, gesture);
-		input_sync(navpoint->input);
-		break;
-
-	case 0x19:	/* Module 0, Hello packet */
-		if ((navpoint->data[1] & 0xf0) == 0x10)
-			break;
-		fallthrough;
-	default:
-		dev_warn(navpoint->dev,
-			 "spurious packet: data=0x%02x,0x%02x,...\n",
-			 navpoint->data[0], navpoint->data[1]);
-		break;
-	}
-}
-
-static irqreturn_t navpoint_irq(int irq, void *dev_id)
-{
-	struct navpoint *navpoint = dev_id;
-	struct ssp_device *ssp = navpoint->ssp;
-	irqreturn_t ret = IRQ_NONE;
-	u32 status;
-
-	status = pxa_ssp_read_reg(ssp, SSSR);
-	if (status & sssr) {
-		dev_warn(navpoint->dev,
-			 "unexpected interrupt: status=0x%08x\n", status);
-		pxa_ssp_write_reg(ssp, SSSR, (status & sssr));
-		ret = IRQ_HANDLED;
-	}
-
-	while (status & SSSR_RNE) {
-		u32 data;
-
-		data = pxa_ssp_read_reg(ssp, SSDR);
-		navpoint->data[navpoint->index + 0] = (data >> 8);
-		navpoint->data[navpoint->index + 1] = data;
-		navpoint->index += 2;
-		if (HEADER_LENGTH(navpoint->data[0]) < navpoint->index) {
-			navpoint_packet(navpoint);
-			navpoint->index = 0;
-		}
-		status = pxa_ssp_read_reg(ssp, SSSR);
-		ret = IRQ_HANDLED;
-	}
-
-	return ret;
-}
-
-static void navpoint_up(struct navpoint *navpoint)
-{
-	struct ssp_device *ssp = navpoint->ssp;
-	int timeout;
-
-	clk_prepare_enable(ssp->clk);
-
-	pxa_ssp_write_reg(ssp, SSCR1, sscr1);
-	pxa_ssp_write_reg(ssp, SSSR, sssr);
-	pxa_ssp_write_reg(ssp, SSTO, 0);
-	pxa_ssp_write_reg(ssp, SSCR0, sscr0);	/* SSCR0_SSE written last */
-
-	/* Wait until SSP port is ready for slave clock operations */
-	for (timeout = 100; timeout != 0; --timeout) {
-		if (!(pxa_ssp_read_reg(ssp, SSSR) & SSSR_CSS))
-			break;
-		msleep(1);
-	}
-
-	if (timeout == 0)
-		dev_err(navpoint->dev,
-			"timeout waiting for SSSR[CSS] to clear\n");
-
-	gpiod_set_value(navpoint->gpiod, 1);
-}
-
-static void navpoint_down(struct navpoint *navpoint)
-{
-	struct ssp_device *ssp = navpoint->ssp;
-
-	gpiod_set_value(navpoint->gpiod, 0);
-
-	pxa_ssp_write_reg(ssp, SSCR0, 0);
-
-	clk_disable_unprepare(ssp->clk);
-}
-
-static int navpoint_open(struct input_dev *input)
-{
-	struct navpoint *navpoint = input_get_drvdata(input);
-
-	navpoint_up(navpoint);
-
-	return 0;
-}
-
-static void navpoint_close(struct input_dev *input)
-{
-	struct navpoint *navpoint = input_get_drvdata(input);
-
-	navpoint_down(navpoint);
-}
-
-static int navpoint_probe(struct platform_device *pdev)
-{
-	const struct navpoint_platform_data *pdata =
-					dev_get_platdata(&pdev->dev);
-	struct ssp_device *ssp;
-	struct input_dev *input;
-	struct navpoint *navpoint;
-	int error;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "no platform data\n");
-		return -EINVAL;
-	}
-
-	ssp = pxa_ssp_request(pdata->port, pdev->name);
-	if (!ssp)
-		return -ENODEV;
-
-	/* HaRET does not disable devices before jumping into Linux */
-	if (pxa_ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) {
-		pxa_ssp_write_reg(ssp, SSCR0, 0);
-		dev_warn(&pdev->dev, "ssp%d already enabled\n", pdata->port);
-	}
-
-	navpoint = kzalloc(sizeof(*navpoint), GFP_KERNEL);
-	input = input_allocate_device();
-	if (!navpoint || !input) {
-		error = -ENOMEM;
-		goto err_free_mem;
-	}
-
-	navpoint->gpiod = gpiod_get_optional(&pdev->dev,
-					     NULL, GPIOD_OUT_LOW);
-	if (IS_ERR(navpoint->gpiod)) {
-		error = PTR_ERR(navpoint->gpiod);
-		dev_err(&pdev->dev, "error getting GPIO\n");
-		goto err_free_mem;
-	}
-	gpiod_set_consumer_name(navpoint->gpiod, "SYNAPTICS_ON");
-
-	navpoint->ssp = ssp;
-	navpoint->input = input;
-	navpoint->dev = &pdev->dev;
-
-	input->name = pdev->name;
-	input->dev.parent = &pdev->dev;
-
-	__set_bit(EV_KEY, input->evbit);
-	__set_bit(EV_ABS, input->evbit);
-	__set_bit(BTN_LEFT, input->keybit);
-	__set_bit(BTN_TOUCH, input->keybit);
-	__set_bit(BTN_TOOL_FINGER, input->keybit);
-
-	input_set_abs_params(input, ABS_X,
-			     NAVPOINT_X_MIN, NAVPOINT_X_MAX, 0, 0);
-	input_set_abs_params(input, ABS_Y,
-			     NAVPOINT_Y_MIN, NAVPOINT_Y_MAX, 0, 0);
-	input_set_abs_params(input, ABS_PRESSURE,
-			     NAVPOINT_PRESSURE_MIN, NAVPOINT_PRESSURE_MAX,
-			     0, 0);
-
-	input->open = navpoint_open;
-	input->close = navpoint_close;
-
-	input_set_drvdata(input, navpoint);
-
-	error = request_irq(ssp->irq, navpoint_irq, 0, pdev->name, navpoint);
-	if (error)
-		goto err_free_mem;
-
-	error = input_register_device(input);
-	if (error)
-		goto err_free_irq;
-
-	platform_set_drvdata(pdev, navpoint);
-	dev_dbg(&pdev->dev, "ssp%d, irq %d\n", pdata->port, ssp->irq);
-
-	return 0;
-
-err_free_irq:
-	free_irq(ssp->irq, navpoint);
-err_free_mem:
-	input_free_device(input);
-	kfree(navpoint);
-	pxa_ssp_free(ssp);
-
-	return error;
-}
-
-static void navpoint_remove(struct platform_device *pdev)
-{
-	struct navpoint *navpoint = platform_get_drvdata(pdev);
-	struct ssp_device *ssp = navpoint->ssp;
-
-	free_irq(ssp->irq, navpoint);
-
-	input_unregister_device(navpoint->input);
-	kfree(navpoint);
-
-	pxa_ssp_free(ssp);
-}
-
-static int navpoint_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct navpoint *navpoint = platform_get_drvdata(pdev);
-	struct input_dev *input = navpoint->input;
-
-	mutex_lock(&input->mutex);
-	if (input_device_enabled(input))
-		navpoint_down(navpoint);
-	mutex_unlock(&input->mutex);
-
-	return 0;
-}
-
-static int navpoint_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct navpoint *navpoint = platform_get_drvdata(pdev);
-	struct input_dev *input = navpoint->input;
-
-	mutex_lock(&input->mutex);
-	if (input_device_enabled(input))
-		navpoint_up(navpoint);
-	mutex_unlock(&input->mutex);
-
-	return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(navpoint_pm_ops,
-				navpoint_suspend, navpoint_resume);
-
-static struct platform_driver navpoint_driver = {
-	.probe		= navpoint_probe,
-	.remove_new	= navpoint_remove,
-	.driver = {
-		.name	= "navpoint",
-		.pm	= pm_sleep_ptr(&navpoint_pm_ops),
-	},
-};
-
-module_platform_driver(navpoint_driver);
-
-MODULE_AUTHOR("Paul Parsons <lost.distance@yahoo.com>");
-MODULE_DESCRIPTION("Synaptics NavPoint (PXA27x SSP/SPI) driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:navpoint");

drivers/input/rmi4/rmi_bus.c

@@ -344,7 +344,7 @@ static int rmi_bus_match(struct device *dev, struct device_driver *drv)
 	return physical || rmi_function_match(dev, drv);
 }
 
-struct bus_type rmi_bus_type = {
+const struct bus_type rmi_bus_type = {
 	.match		= rmi_bus_match,
 	.name		= "rmi4",
 };

drivers/input/rmi4/rmi_bus.h

@@ -185,7 +185,7 @@ static inline int rmi_write_block(struct rmi_device *d, u16 addr,
 
 int rmi_for_each_dev(void *data, int (*func)(struct device *dev, void *data));
 
-extern struct bus_type rmi_bus_type;
+extern const struct bus_type rmi_bus_type;
 
 int rmi_of_property_read_u32(struct device *dev, u32 *result,
 				const char *prop, bool optional);

drivers/input/rmi4/rmi_driver.c

@@ -1196,7 +1196,11 @@ static int rmi_driver_probe(struct device *dev)
 		}
 		rmi_driver_set_input_params(rmi_dev, data->input);
 		data->input->phys = devm_kasprintf(dev, GFP_KERNEL,
-						"%s/input0", dev_name(dev));
+						   "%s/input0", dev_name(dev));
+		if (!data->input->phys) {
+			retval = -ENOMEM;
+			goto err;
+		}
 	}
 
 	retval = rmi_init_functions(data);

drivers/input/serio/serio.c

@@ -1007,7 +1007,7 @@ irqreturn_t serio_interrupt(struct serio *serio,
 }
 EXPORT_SYMBOL(serio_interrupt);
 
-struct bus_type serio_bus = {
+const struct bus_type serio_bus = {
 	.name		= "serio",
 	.drv_groups	= serio_driver_groups,
 	.match		= serio_bus_match,

drivers/input/serio/xilinx_ps2.c

@@ -219,8 +219,7 @@ static void sxps2_close(struct serio *pserio)
 
 /**
  * xps2_of_probe - probe method for the PS/2 device.
- * @of_dev:	pointer to OF device structure
- * @match:	pointer to the structure used for matching a device
+ * @ofdev:	pointer to OF device structure
  *
  * This function probes the PS/2 device in the device tree.
  * It initializes the driver data structure and the hardware.

drivers/input/touchscreen/Kconfig

@@ -416,6 +416,37 @@ config TOUCHSCREEN_GOODIX
 	  To compile this driver as a module, choose M here: the
 	  module will be called goodix.
 
+config TOUCHSCREEN_GOODIX_BERLIN_CORE
+	tristate
+
+config TOUCHSCREEN_GOODIX_BERLIN_I2C
+	tristate "Goodix Berlin I2C touchscreen"
+	depends on I2C
+	select REGMAP_I2C
+	select TOUCHSCREEN_GOODIX_BERLIN_CORE
+	help
+	  Say Y here if you have a Goodix Berlin IC connected to
+	  your system via I2C.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called goodix_berlin_i2c.
+
+config TOUCHSCREEN_GOODIX_BERLIN_SPI
+	tristate "Goodix Berlin SPI touchscreen"
+	depends on SPI_MASTER
+	select REGMAP
+	select TOUCHSCREEN_GOODIX_BERLIN_CORE
+	help
+	  Say Y here if you have a Goodix Berlin IC connected to
+	  your system via SPI.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called goodix_berlin_spi.
+
 config TOUCHSCREEN_HIDEEP
 	tristate "HiDeep Touch IC"
 	depends on I2C

drivers/input/touchscreen/Makefile

@@ -47,6 +47,9 @@ obj-$(CONFIG_TOUCHSCREEN_EGALAX_SERIAL)	+= egalax_ts_serial.o
 obj-$(CONFIG_TOUCHSCREEN_EXC3000)	+= exc3000.o
 obj-$(CONFIG_TOUCHSCREEN_FUJITSU)	+= fujitsu_ts.o
 obj-$(CONFIG_TOUCHSCREEN_GOODIX)	+= goodix_ts.o
+obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_CORE)	+= goodix_berlin_core.o
+obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_I2C)	+= goodix_berlin_i2c.o
+obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_SPI)	+= goodix_berlin_spi.o
 obj-$(CONFIG_TOUCHSCREEN_HIDEEP)	+= hideep.o
 obj-$(CONFIG_TOUCHSCREEN_HYNITRON_CSTXXX)	+= hynitron_cstxxx.o
 obj-$(CONFIG_TOUCHSCREEN_ILI210X)	+= ili210x.o

drivers/input/touchscreen/goodix_berlin.h

+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Goodix Touchscreen Driver
+ * Copyright (C) 2020 - 2021 Goodix, Inc.
+ * Copyright (C) 2023 Linaro Ltd.
+ *
+ * Based on goodix_berlin_berlin driver.
+ */
+
+#ifndef __GOODIX_BERLIN_H_
+#define __GOODIX_BERLIN_H_
+
+#include <linux/pm.h>
+
+struct device;
+struct input_id;
+struct regmap;
+
+int goodix_berlin_probe(struct device *dev, int irq, const struct input_id *id,
+			struct regmap *regmap);
+
+extern const struct dev_pm_ops goodix_berlin_pm_ops;
+
+#endif

drivers/input/touchscreen/goodix_berlin_core.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Goodix "Berlin" Touchscreen IC driver
+ * Copyright (C) 2020 - 2021 Goodix, Inc.
+ * Copyright (C) 2023 Linaro Ltd.
+ *
+ * Based on goodix_ts_berlin driver.
+ *
+ * This driver is distinct from goodix.c since hardware interface
+ * is different enough to require a new driver.
+ * None of the register address or data structure are close enough
+ * to the previous generations.
+ *
+ * Currently the driver only handles Multitouch events with already
+ * programmed firmware and "config" for "Revision D" Berlin IC.
+ *
+ * Support is missing for:
+ * - ESD Management
+ * - Firmware update/flashing
+ * - "Config" update/flashing
+ * - Stylus Events
+ * - Gesture Events
+ * - Support for older revisions (A & B)
+ */
+
+#include <linux/bitfield.h>
+#include <linux/gpio/consumer.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/sizes.h>
+#include <asm/unaligned.h>
+
+#include "goodix_berlin.h"
+
+#define GOODIX_BERLIN_MAX_TOUCH			10
+
+#define GOODIX_BERLIN_NORMAL_RESET_DELAY_MS	100
+
+#define GOODIX_BERLIN_TOUCH_EVENT		BIT(7)
+#define GOODIX_BERLIN_REQUEST_EVENT		BIT(6)
+#define GOODIX_BERLIN_TOUCH_COUNT_MASK		GENMASK(3, 0)
+
+#define GOODIX_BERLIN_REQUEST_CODE_RESET	3
+
+#define GOODIX_BERLIN_POINT_TYPE_MASK		GENMASK(3, 0)
+#define GOODIX_BERLIN_POINT_TYPE_STYLUS_HOVER	1
+#define GOODIX_BERLIN_POINT_TYPE_STYLUS		3
+
+#define GOODIX_BERLIN_TOUCH_ID_MASK		GENMASK(7, 4)
+
+#define GOODIX_BERLIN_DEV_CONFIRM_VAL		0xAA
+#define GOODIX_BERLIN_BOOTOPTION_ADDR		0x10000
+#define GOODIX_BERLIN_FW_VERSION_INFO_ADDR	0x10014
+
+#define GOODIX_BERLIN_IC_INFO_MAX_LEN		SZ_1K
+#define GOODIX_BERLIN_IC_INFO_ADDR		0x10070
+
+#define GOODIX_BERLIN_CHECKSUM_SIZE		sizeof(u16)
+
+struct goodix_berlin_fw_version {
+	u8 rom_pid[6];
+	u8 rom_vid[3];
+	u8 rom_vid_reserved;
+	u8 patch_pid[8];
+	u8 patch_vid[4];
+	u8 patch_vid_reserved;
+	u8 sensor_id;
+	u8 reserved[2];
+	__le16 checksum;
+};
+
+struct goodix_berlin_ic_info_version {
+	u8 info_customer_id;
+	u8 info_version_id;
+	u8 ic_die_id;
+	u8 ic_version_id;
+	__le32 config_id;
+	u8 config_version;
+	u8 frame_data_customer_id;
+	u8 frame_data_version_id;
+	u8 touch_data_customer_id;
+	u8 touch_data_version_id;
+	u8 reserved[3];
+} __packed;
+
+struct goodix_berlin_ic_info_feature {
+	__le16 freqhop_feature;
+	__le16 calibration_feature;
+	__le16 gesture_feature;
+	__le16 side_touch_feature;
+	__le16 stylus_feature;
+} __packed;
+
+struct goodix_berlin_ic_info_misc {
+	__le32 cmd_addr;
+	__le16 cmd_max_len;
+	__le32 cmd_reply_addr;
+	__le16 cmd_reply_len;
+	__le32 fw_state_addr;
+	__le16 fw_state_len;
+	__le32 fw_buffer_addr;
+	__le16 fw_buffer_max_len;
+	__le32 frame_data_addr;
+	__le16 frame_data_head_len;
+	__le16 fw_attr_len;
+	__le16 fw_log_len;
+	u8 pack_max_num;
+	u8 pack_compress_version;
+	__le16 stylus_struct_len;
+	__le16 mutual_struct_len;
+	__le16 self_struct_len;
+	__le16 noise_struct_len;
+	__le32 touch_data_addr;
+	__le16 touch_data_head_len;
+	__le16 point_struct_len;
+	__le16 reserved1;
+	__le16 reserved2;
+	__le32 mutual_rawdata_addr;
+	__le32 mutual_diffdata_addr;
+	__le32 mutual_refdata_addr;
+	__le32 self_rawdata_addr;
+	__le32 self_diffdata_addr;
+	__le32 self_refdata_addr;
+	__le32 iq_rawdata_addr;
+	__le32 iq_refdata_addr;
+	__le32 im_rawdata_addr;
+	__le16 im_readata_len;
+	__le32 noise_rawdata_addr;
+	__le16 noise_rawdata_len;
+	__le32 stylus_rawdata_addr;
+	__le16 stylus_rawdata_len;
+	__le32 noise_data_addr;
+	__le32 esd_addr;
+} __packed;
+
+struct goodix_berlin_touch {
+	u8 status;
+	u8 reserved;
+	__le16 x;
+	__le16 y;
+	__le16 w;
+};
+#define GOODIX_BERLIN_TOUCH_SIZE	sizeof(struct goodix_berlin_touch)
+
+struct goodix_berlin_header {
+	u8 status;
+	u8 reserved1;
+	u8 request_type;
+	u8 reserved2[3];
+	__le16 checksum;
+};
+#define GOODIX_BERLIN_HEADER_SIZE	sizeof(struct goodix_berlin_header)
+
+struct goodix_berlin_event {
+	struct goodix_berlin_header hdr;
+	/* The data below is u16/__le16 aligned */
+	u8 data[GOODIX_BERLIN_TOUCH_SIZE * GOODIX_BERLIN_MAX_TOUCH +
+		GOODIX_BERLIN_CHECKSUM_SIZE];
+};
+
+struct goodix_berlin_core {
+	struct device *dev;
+	struct regmap *regmap;
+	struct regulator *avdd;
+	struct regulator *iovdd;
+	struct gpio_desc *reset_gpio;
+	struct touchscreen_properties props;
+	struct goodix_berlin_fw_version fw_version;
+	struct input_dev *input_dev;
+	int irq;
+
+	/* Runtime parameters extracted from IC_INFO buffer  */
+	u32 touch_data_addr;
+
+	struct goodix_berlin_event event;
+};
+
+static bool goodix_berlin_checksum_valid(const u8 *data, int size)
+{
+	u32 cal_checksum = 0;
+	u16 r_checksum;
+	int i;
+
+	if (size < GOODIX_BERLIN_CHECKSUM_SIZE)
+		return false;
+
+	for (i = 0; i < size - GOODIX_BERLIN_CHECKSUM_SIZE; i++)
+		cal_checksum += data[i];
+
+	r_checksum = get_unaligned_le16(&data[i]);
+
+	return (u16)cal_checksum == r_checksum;
+}
+
+static bool goodix_berlin_is_dummy_data(struct goodix_berlin_core *cd,
+					const u8 *data, int size)
+{
+	int i;
+
+	/*
+	 * If the device is missing or doesn't respond the buffer
+	 * could be filled with bus default line state, 0x00 or 0xff,
+	 * so declare success the first time we encounter neither.
+	 */
+	for (i = 0; i < size; i++)
+		if (data[i] > 0 && data[i] < 0xff)
+			return false;
+
+	return true;
+}
+
+static int goodix_berlin_dev_confirm(struct goodix_berlin_core *cd)
+{
+	u8 tx_buf[8], rx_buf[8];
+	int retry = 3;
+	int error;
+
+	memset(tx_buf, GOODIX_BERLIN_DEV_CONFIRM_VAL, sizeof(tx_buf));
+	while (retry--) {
+		error = regmap_raw_write(cd->regmap,
+					 GOODIX_BERLIN_BOOTOPTION_ADDR,
+					 tx_buf, sizeof(tx_buf));
+		if (error)
+			return error;
+
+		error = regmap_raw_read(cd->regmap,
+					GOODIX_BERLIN_BOOTOPTION_ADDR,
+					rx_buf, sizeof(rx_buf));
+		if (error)
+			return error;
+
+		if (!memcmp(tx_buf, rx_buf, sizeof(tx_buf)))
+			return 0;
+
+		usleep_range(5000, 5100);
+	}
+
+	dev_err(cd->dev, "device confirm failed, rx_buf: %*ph\n",
+		(int)sizeof(rx_buf), rx_buf);
+
+	return -EINVAL;
+}
+
+static int goodix_berlin_power_on(struct goodix_berlin_core *cd)
+{
+	int error;
+
+	error = regulator_enable(cd->iovdd);
+	if (error) {
+		dev_err(cd->dev, "Failed to enable iovdd: %d\n", error);
+		return error;
+	}
+
+	/* Vendor waits 3ms for IOVDD to settle */
+	usleep_range(3000, 3100);
+
+	error = regulator_enable(cd->avdd);
+	if (error) {
+		dev_err(cd->dev, "Failed to enable avdd: %d\n", error);
+		goto err_iovdd_disable;
+	}
+
+	/* Vendor waits 15ms for IOVDD to settle */
+	usleep_range(15000, 15100);
+
+	gpiod_set_value_cansleep(cd->reset_gpio, 0);
+
+	/* Vendor waits 4ms for Firmware to initialize */
+	usleep_range(4000, 4100);
+
+	error = goodix_berlin_dev_confirm(cd);
+	if (error)
+		goto err_dev_reset;
+
+	/* Vendor waits 100ms for Firmware to fully boot */
+	msleep(GOODIX_BERLIN_NORMAL_RESET_DELAY_MS);
+
+	return 0;
+
+err_dev_reset:
+	gpiod_set_value_cansleep(cd->reset_gpio, 1);
+	regulator_disable(cd->avdd);
+err_iovdd_disable:
+	regulator_disable(cd->iovdd);
+	return error;
+}
+
+static void goodix_berlin_power_off(struct goodix_berlin_core *cd)
+{
+	gpiod_set_value_cansleep(cd->reset_gpio, 1);
+	regulator_disable(cd->avdd);
+	regulator_disable(cd->iovdd);
+}
+
+static int goodix_berlin_read_version(struct goodix_berlin_core *cd)
+{
+	int error;
+
+	error = regmap_raw_read(cd->regmap, GOODIX_BERLIN_FW_VERSION_INFO_ADDR,
+				&cd->fw_version, sizeof(cd->fw_version));
+	if (error) {
+		dev_err(cd->dev, "error reading fw version, %d\n", error);
+		return error;
+	}
+
+	if (!goodix_berlin_checksum_valid((u8 *)&cd->fw_version,
+					  sizeof(cd->fw_version))) {
+		dev_err(cd->dev, "invalid fw version: checksum error\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Only extract necessary data for runtime */
+static int goodix_berlin_parse_ic_info(struct goodix_berlin_core *cd,
+				       const u8 *data, u16 length)
+{
+	struct goodix_berlin_ic_info_misc *misc;
+	unsigned int offset = 0;
+
+	offset += sizeof(__le16); /* length */
+	offset += sizeof(struct goodix_berlin_ic_info_version);
+	offset += sizeof(struct goodix_berlin_ic_info_feature);
+
+	/* IC_INFO Parameters, variable width structure */
+	offset += 4 * sizeof(u8); /* drv_num, sen_num, button_num, force_num */
+	if (offset >= length)
+		goto invalid_offset;
+
+#define ADVANCE_LE16_PARAMS()				\
+	do {						\
+		u8 param_num = data[offset++];		\
+		offset += param_num * sizeof(__le16);	\
+		if (offset >= length)			\
+			goto invalid_offset;		\
+	} while (0)
+	ADVANCE_LE16_PARAMS(); /* active_scan_rate_num */
+	ADVANCE_LE16_PARAMS(); /* mutual_freq_num*/
+	ADVANCE_LE16_PARAMS(); /* self_tx_freq_num */
+	ADVANCE_LE16_PARAMS(); /* self_rx_freq_num */
+	ADVANCE_LE16_PARAMS(); /* stylus_freq_num */
+#undef ADVANCE_LE16_PARAMS
+
+	misc = (struct goodix_berlin_ic_info_misc *)&data[offset];
+	cd->touch_data_addr = le32_to_cpu(misc->touch_data_addr);
+
+	return 0;
+
+invalid_offset:
+	dev_err(cd->dev, "ic_info length is invalid (offset %d length %d)\n",
+		offset, length);
+	return -EINVAL;
+}
+
+static int goodix_berlin_get_ic_info(struct goodix_berlin_core *cd)
+{
+	u8 *afe_data __free(kfree) = NULL;
+	__le16 length_raw;
+	u16 length;
+	int error;
+
+	afe_data = kzalloc(GOODIX_BERLIN_IC_INFO_MAX_LEN, GFP_KERNEL);
+	if (!afe_data)
+		return -ENOMEM;
+
+	error = regmap_raw_read(cd->regmap, GOODIX_BERLIN_IC_INFO_ADDR,
+				&length_raw, sizeof(length_raw));
+	if (error) {
+		dev_err(cd->dev, "failed get ic info length, %d\n", error);
+		return error;
+	}
+
+	length = le16_to_cpu(length_raw);
+	if (length >= GOODIX_BERLIN_IC_INFO_MAX_LEN) {
+		dev_err(cd->dev, "invalid ic info length %d\n", length);
+		return -EINVAL;
+	}
+
+	error = regmap_raw_read(cd->regmap, GOODIX_BERLIN_IC_INFO_ADDR,
+				afe_data, length);
+	if (error) {
+		dev_err(cd->dev, "failed get ic info data, %d\n", error);
+		return error;
+	}
+
+	/* check whether the data is valid (ex. bus default values) */
+	if (goodix_berlin_is_dummy_data(cd, afe_data, length)) {
+		dev_err(cd->dev, "fw info data invalid\n");
+		return -EINVAL;
+	}
+
+	if (!goodix_berlin_checksum_valid(afe_data, length)) {
+		dev_err(cd->dev, "fw info checksum error\n");
+		return -EINVAL;
+	}
+
+	error = goodix_berlin_parse_ic_info(cd, afe_data, length);
+	if (error)
+		return error;
+
+	/* check some key info */
+	if (!cd->touch_data_addr) {
+		dev_err(cd->dev, "touch_data_addr is null\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int goodix_berlin_get_remaining_contacts(struct goodix_berlin_core *cd,
+						int n)
+{
+	size_t offset = 2 * GOODIX_BERLIN_TOUCH_SIZE +
+				GOODIX_BERLIN_CHECKSUM_SIZE;
+	u32 addr = cd->touch_data_addr + GOODIX_BERLIN_HEADER_SIZE + offset;
+	int error;
+
+	error = regmap_raw_read(cd->regmap, addr,
+				&cd->event.data[offset],
+				(n - 2) * GOODIX_BERLIN_TOUCH_SIZE);
+	if (error) {
+		dev_err_ratelimited(cd->dev, "failed to get touch data, %d\n",
+				    error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void goodix_berlin_report_state(struct goodix_berlin_core *cd, int n)
+{
+	struct goodix_berlin_touch *touch_data =
+			(struct goodix_berlin_touch *)cd->event.data;
+	struct goodix_berlin_touch *t;
+	int i;
+	u8 type, id;
+
+	for (i = 0; i < n; i++) {
+		t = &touch_data[i];
+
+		type = FIELD_GET(GOODIX_BERLIN_POINT_TYPE_MASK, t->status);
+		if (type == GOODIX_BERLIN_POINT_TYPE_STYLUS ||
+		    type == GOODIX_BERLIN_POINT_TYPE_STYLUS_HOVER) {
+			dev_warn_once(cd->dev, "Stylus event type not handled\n");
+			continue;
+		}
+
+		id = FIELD_GET(GOODIX_BERLIN_TOUCH_ID_MASK, t->status);
+		if (id >= GOODIX_BERLIN_MAX_TOUCH) {
+			dev_warn_ratelimited(cd->dev, "invalid finger id %d\n", id);
+			continue;
+		}
+
+		input_mt_slot(cd->input_dev, id);
+		input_mt_report_slot_state(cd->input_dev, MT_TOOL_FINGER, true);
+
+		touchscreen_report_pos(cd->input_dev, &cd->props,
+				       __le16_to_cpu(t->x), __le16_to_cpu(t->y),
+				       true);
+		input_report_abs(cd->input_dev, ABS_MT_TOUCH_MAJOR,
+				 __le16_to_cpu(t->w));
+	}
+
+	input_mt_sync_frame(cd->input_dev);
+	input_sync(cd->input_dev);
+}
+
+static void goodix_berlin_touch_handler(struct goodix_berlin_core *cd)
+{
+	u8 touch_num;
+	int error;
+
+	touch_num = FIELD_GET(GOODIX_BERLIN_TOUCH_COUNT_MASK,
+			      cd->event.hdr.request_type);
+	if (touch_num > GOODIX_BERLIN_MAX_TOUCH) {
+		dev_warn(cd->dev, "invalid touch num %d\n", touch_num);
+		return;
+	}
+
+	if (touch_num > 2) {
+		/* read additional contact data if more than 2 touch events */
+		error = goodix_berlin_get_remaining_contacts(cd, touch_num);
+		if (error)
+			return;
+	}
+
+	if (touch_num) {
+		int len = touch_num * GOODIX_BERLIN_TOUCH_SIZE +
+			  GOODIX_BERLIN_CHECKSUM_SIZE;
+		if (!goodix_berlin_checksum_valid(cd->event.data, len)) {
+			dev_err(cd->dev, "touch data checksum error: %*ph\n",
+				len, cd->event.data);
+			return;
+		}
+	}
+
+	goodix_berlin_report_state(cd, touch_num);
+}
+
+static int goodix_berlin_request_handle_reset(struct goodix_berlin_core *cd)
+{
+	gpiod_set_value_cansleep(cd->reset_gpio, 1);
+	usleep_range(2000, 2100);
+	gpiod_set_value_cansleep(cd->reset_gpio, 0);
+
+	msleep(GOODIX_BERLIN_NORMAL_RESET_DELAY_MS);
+
+	return 0;
+}
+
+static irqreturn_t goodix_berlin_irq(int irq, void *data)
+{
+	struct goodix_berlin_core *cd = data;
+	int error;
+
+	/*
+	 * First, read buffer with space for 2 touch events:
+	 * - GOODIX_BERLIN_HEADER_SIZE = 8 bytes
+	 * - GOODIX_BERLIN_TOUCH_SIZE * 2 = 16 bytes
+	 * - GOODIX_BERLIN_CHECKLSUM_SIZE = 2 bytes
+	 * For a total of 26 bytes.
+	 *
+	 * If only a single finger is reported, we will read 8 bytes more than
+	 * needed:
+	 * - bytes 0-7:   Header (GOODIX_BERLIN_HEADER_SIZE)
+	 * - bytes 8-15:  Finger 0 Data
+	 * - bytes 24-25: Checksum
+	 * - bytes 18-25: Unused 8 bytes
+	 *
+	 * If 2 fingers are reported, we would have read the exact needed
+	 * amount of data and checksum would be at the end of the buffer:
+	 * - bytes 0-7:   Header (GOODIX_BERLIN_HEADER_SIZE)
+	 * - bytes 8-15:  Finger 0 Bytes 0-7
+	 * - bytes 16-23: Finger 1 Bytes 0-7
+	 * - bytes 24-25: Checksum
+	 *
+	 * If more than 2 fingers were reported, the "Checksum" bytes would
+	 * in fact contain part of the next finger data, and then
+	 * goodix_berlin_get_remaining_contacts() would complete the buffer
+	 * with the missing bytes, including the trailing checksum.
+	 * For example, if 3 fingers are reported, then we would do:
+	 * Read 1:
+	 * - bytes 0-7:   Header (GOODIX_BERLIN_HEADER_SIZE)
+	 * - bytes 8-15:  Finger 0 Bytes 0-7
+	 * - bytes 16-23: Finger 1 Bytes 0-7
+	 * - bytes 24-25: Finger 2 Bytes 0-1
+	 * Read 2 (with length of (3 - 2) * 8 = 8 bytes):
+	 * - bytes 26-31: Finger 2 Bytes 2-7
+	 * - bytes 32-33: Checksum
+	 */
+	error = regmap_raw_read(cd->regmap, cd->touch_data_addr,
+				&cd->event,
+				GOODIX_BERLIN_HEADER_SIZE +
+					2 * GOODIX_BERLIN_TOUCH_SIZE +
+					GOODIX_BERLIN_CHECKSUM_SIZE);
+	if (error) {
+		dev_warn_ratelimited(cd->dev,
+				     "failed get event head data: %d\n", error);
+		goto out;
+	}
+
+	if (cd->event.hdr.status == 0)
+		goto out;
+
+	if (!goodix_berlin_checksum_valid((u8 *)&cd->event.hdr,
+					  GOODIX_BERLIN_HEADER_SIZE)) {
+		dev_warn_ratelimited(cd->dev,
+				     "touch head checksum error: %*ph\n",
+				     (int)GOODIX_BERLIN_HEADER_SIZE,
+				     &cd->event.hdr);
+		goto out_clear;
+	}
+
+	if (cd->event.hdr.status & GOODIX_BERLIN_TOUCH_EVENT)
+		goodix_berlin_touch_handler(cd);
+
+	if (cd->event.hdr.status & GOODIX_BERLIN_REQUEST_EVENT) {
+		switch (cd->event.hdr.request_type) {
+		case GOODIX_BERLIN_REQUEST_CODE_RESET:
+			if (cd->reset_gpio)
+				goodix_berlin_request_handle_reset(cd);
+			break;
+
+		default:
+			dev_warn(cd->dev, "unsupported request code 0x%x\n",
+				 cd->event.hdr.request_type);
+		}
+	}
+
+
+out_clear:
+	/* Clear up status field */
+	regmap_write(cd->regmap, cd->touch_data_addr, 0);
+
+out:
+	return IRQ_HANDLED;
+}
+
+static int goodix_berlin_input_dev_config(struct goodix_berlin_core *cd,
+					  const struct input_id *id)
+{
+	struct input_dev *input_dev;
+	int error;
+
+	input_dev = devm_input_allocate_device(cd->dev);
+	if (!input_dev)
+		return -ENOMEM;
+
+	cd->input_dev = input_dev;
+	input_set_drvdata(input_dev, cd);
+
+	input_dev->name = "Goodix Berlin Capacitive TouchScreen";
+	input_dev->phys = "input/ts";
+
+	input_dev->id = *id;
+
+	input_set_abs_params(cd->input_dev, ABS_MT_POSITION_X,
+			     0, SZ_64K - 1, 0, 0);
+	input_set_abs_params(cd->input_dev, ABS_MT_POSITION_Y,
+			     0, SZ_64K - 1, 0, 0);
+	input_set_abs_params(cd->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+
+	touchscreen_parse_properties(cd->input_dev, true, &cd->props);
+
+	error = input_mt_init_slots(cd->input_dev, GOODIX_BERLIN_MAX_TOUCH,
+				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
+	if (error)
+		return error;
+
+	error = input_register_device(cd->input_dev);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static int goodix_berlin_suspend(struct device *dev)
+{
+	struct goodix_berlin_core *cd = dev_get_drvdata(dev);
+
+	disable_irq(cd->irq);
+	goodix_berlin_power_off(cd);
+
+	return 0;
+}
+
+static int goodix_berlin_resume(struct device *dev)
+{
+	struct goodix_berlin_core *cd = dev_get_drvdata(dev);
+	int error;
+
+	error = goodix_berlin_power_on(cd);
+	if (error)
+		return error;
+
+	enable_irq(cd->irq);
+
+	return 0;
+}
+
+EXPORT_GPL_SIMPLE_DEV_PM_OPS(goodix_berlin_pm_ops,
+			     goodix_berlin_suspend, goodix_berlin_resume);
+
+static void goodix_berlin_power_off_act(void *data)
+{
+	struct goodix_berlin_core *cd = data;
+
+	goodix_berlin_power_off(cd);
+}
+
+int goodix_berlin_probe(struct device *dev, int irq, const struct input_id *id,
+			struct regmap *regmap)
+{
+	struct goodix_berlin_core *cd;
+	int error;
+
+	if (irq <= 0) {
+		dev_err(dev, "Missing interrupt number\n");
+		return -EINVAL;
+	}
+
+	cd = devm_kzalloc(dev, sizeof(*cd), GFP_KERNEL);
+	if (!cd)
+		return -ENOMEM;
+
+	cd->dev = dev;
+	cd->regmap = regmap;
+	cd->irq = irq;
+
+	cd->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(cd->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(cd->reset_gpio),
+				     "Failed to request reset gpio\n");
+
+	cd->avdd = devm_regulator_get(dev, "avdd");
+	if (IS_ERR(cd->avdd))
+		return dev_err_probe(dev, PTR_ERR(cd->avdd),
+				     "Failed to request avdd regulator\n");
+
+	cd->iovdd = devm_regulator_get(dev, "iovdd");
+	if (IS_ERR(cd->iovdd))
+		return dev_err_probe(dev, PTR_ERR(cd->iovdd),
+				     "Failed to request iovdd regulator\n");
+
+	error = goodix_berlin_power_on(cd);
+	if (error) {
+		dev_err(dev, "failed power on");
+		return error;
+	}
+
+	error = devm_add_action_or_reset(dev, goodix_berlin_power_off_act, cd);
+	if (error)
+		return error;
+
+	error = goodix_berlin_read_version(cd);
+	if (error) {
+		dev_err(dev, "failed to get version info");
+		return error;
+	}
+
+	error = goodix_berlin_get_ic_info(cd);
+	if (error) {
+		dev_err(dev, "invalid ic info, abort");
+		return error;
+	}
+
+	error = goodix_berlin_input_dev_config(cd, id);
+	if (error) {
+		dev_err(dev, "failed set input device");
+		return error;
+	}
+
+	error = devm_request_threaded_irq(dev, cd->irq, NULL, goodix_berlin_irq,
+					  IRQF_ONESHOT, "goodix-berlin", cd);
+	if (error) {
+		dev_err(dev, "request threaded irq failed: %d\n", error);
+		return error;
+	}
+
+	dev_set_drvdata(dev, cd);
+
+	dev_dbg(dev, "Goodix Berlin %s Touchscreen Controller",
+		cd->fw_version.patch_pid);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(goodix_berlin_probe);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Goodix Berlin Core Touchscreen driver");
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");

drivers/input/touchscreen/goodix_berlin_i2c.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Goodix Berlin Touchscreen Driver
+ *
+ * Copyright (C) 2020 - 2021 Goodix, Inc.
+ * Copyright (C) 2023 Linaro Ltd.
+ *
+ * Based on goodix_ts_berlin driver.
+ */
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/input.h>
+
+#include "goodix_berlin.h"
+
+#define I2C_MAX_TRANSFER_SIZE		256
+
+static const struct regmap_config goodix_berlin_i2c_regmap_conf = {
+	.reg_bits = 32,
+	.val_bits = 8,
+	.max_raw_read = I2C_MAX_TRANSFER_SIZE,
+	.max_raw_write = I2C_MAX_TRANSFER_SIZE,
+};
+
+/* vendor & product left unassigned here, should probably be updated from fw info */
+static const struct input_id goodix_berlin_i2c_input_id = {
+	.bustype = BUS_I2C,
+};
+
+static int goodix_berlin_i2c_probe(struct i2c_client *client)
+{
+	struct regmap *regmap;
+	int error;
+
+	regmap = devm_regmap_init_i2c(client, &goodix_berlin_i2c_regmap_conf);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	error = goodix_berlin_probe(&client->dev, client->irq,
+				    &goodix_berlin_i2c_input_id, regmap);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static const struct i2c_device_id goodix_berlin_i2c_id[] = {
+	{ "gt9916", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, goodix_berlin_i2c_id);
+
+static const struct of_device_id goodix_berlin_i2c_of_match[] = {
+	{ .compatible = "goodix,gt9916", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, goodix_berlin_i2c_of_match);
+
+static struct i2c_driver goodix_berlin_i2c_driver = {
+	.driver = {
+		.name = "goodix-berlin-i2c",
+		.of_match_table = goodix_berlin_i2c_of_match,
+		.pm = pm_sleep_ptr(&goodix_berlin_pm_ops),
+	},
+	.probe = goodix_berlin_i2c_probe,
+	.id_table = goodix_berlin_i2c_id,
+};
+module_i2c_driver(goodix_berlin_i2c_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Goodix Berlin I2C Touchscreen driver");
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");

drivers/input/touchscreen/goodix_berlin_spi.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Goodix Berlin Touchscreen Driver
+ *
+ * Copyright (C) 2020 - 2021 Goodix, Inc.
+ * Copyright (C) 2023 Linaro Ltd.
+ *
+ * Based on goodix_ts_berlin driver.
+ */
+#include <asm/unaligned.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+#include <linux/input.h>
+
+#include "goodix_berlin.h"
+
+#define GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN	1
+#define GOODIX_BERLIN_REGISTER_WIDTH		4
+#define GOODIX_BERLIN_SPI_READ_DUMMY_LEN	3
+#define GOODIX_BERLIN_SPI_READ_PREFIX_LEN	(GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN + \
+						 GOODIX_BERLIN_REGISTER_WIDTH + \
+						 GOODIX_BERLIN_SPI_READ_DUMMY_LEN)
+#define GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN	(GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN + \
+						 GOODIX_BERLIN_REGISTER_WIDTH)
+
+#define GOODIX_BERLIN_SPI_WRITE_FLAG		0xF0
+#define GOODIX_BERLIN_SPI_READ_FLAG		0xF1
+
+static int goodix_berlin_spi_read(void *context, const void *reg_buf,
+				  size_t reg_size, void *val_buf,
+				  size_t val_size)
+{
+	struct spi_device *spi = context;
+	struct spi_transfer xfers;
+	struct spi_message spi_msg;
+	const u32 *reg = reg_buf; /* reg is stored as native u32 at start of buffer */
+	u8 *buf;
+	int error;
+
+	if (reg_size != GOODIX_BERLIN_REGISTER_WIDTH)
+		return -EINVAL;
+
+	buf = kzalloc(GOODIX_BERLIN_SPI_READ_PREFIX_LEN + val_size, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	spi_message_init(&spi_msg);
+	memset(&xfers, 0, sizeof(xfers));
+
+	/* buffer format: 0xF1 + addr(4bytes) + dummy(3bytes) + data */
+	buf[0] = GOODIX_BERLIN_SPI_READ_FLAG;
+	put_unaligned_be32(*reg, buf + GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN);
+	memset(buf + GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN + GOODIX_BERLIN_REGISTER_WIDTH,
+	       0xff, GOODIX_BERLIN_SPI_READ_DUMMY_LEN);
+
+	xfers.tx_buf = buf;
+	xfers.rx_buf = buf;
+	xfers.len = GOODIX_BERLIN_SPI_READ_PREFIX_LEN + val_size;
+	xfers.cs_change = 0;
+	spi_message_add_tail(&xfers, &spi_msg);
+
+	error = spi_sync(spi, &spi_msg);
+	if (error < 0)
+		dev_err(&spi->dev, "spi transfer error, %d", error);
+	else
+		memcpy(val_buf, buf + GOODIX_BERLIN_SPI_READ_PREFIX_LEN, val_size);
+
+	kfree(buf);
+	return error;
+}
+
+static int goodix_berlin_spi_write(void *context, const void *data,
+				   size_t count)
+{
+	unsigned int len = count - GOODIX_BERLIN_REGISTER_WIDTH;
+	struct spi_device *spi = context;
+	struct spi_transfer xfers;
+	struct spi_message spi_msg;
+	const u32 *reg = data; /* reg is stored as native u32 at start of buffer */
+	u8 *buf;
+	int error;
+
+	buf = kzalloc(GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN + len, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	spi_message_init(&spi_msg);
+	memset(&xfers, 0, sizeof(xfers));
+
+	buf[0] = GOODIX_BERLIN_SPI_WRITE_FLAG;
+	put_unaligned_be32(*reg, buf + GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN);
+	memcpy(buf + GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN,
+	       data + GOODIX_BERLIN_REGISTER_WIDTH, len);
+
+	xfers.tx_buf = buf;
+	xfers.len = GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN + len;
+	xfers.cs_change = 0;
+	spi_message_add_tail(&xfers, &spi_msg);
+
+	error = spi_sync(spi, &spi_msg);
+	if (error < 0)
+		dev_err(&spi->dev, "spi transfer error, %d", error);
+
+	kfree(buf);
+	return error;
+}
+
+static const struct regmap_config goodix_berlin_spi_regmap_conf = {
+	.reg_bits = 32,
+	.val_bits = 8,
+	.read = goodix_berlin_spi_read,
+	.write = goodix_berlin_spi_write,
+};
+
+/* vendor & product left unassigned here, should probably be updated from fw info */
+static const struct input_id goodix_berlin_spi_input_id = {
+	.bustype = BUS_SPI,
+};
+
+static int goodix_berlin_spi_probe(struct spi_device *spi)
+{
+	struct regmap_config regmap_config;
+	struct regmap *regmap;
+	size_t max_size;
+	int error = 0;
+
+	spi->mode = SPI_MODE_0;
+	spi->bits_per_word = 8;
+	error = spi_setup(spi);
+	if (error)
+		return error;
+
+	max_size = spi_max_transfer_size(spi);
+
+	regmap_config = goodix_berlin_spi_regmap_conf;
+	regmap_config.max_raw_read = max_size - GOODIX_BERLIN_SPI_READ_PREFIX_LEN;
+	regmap_config.max_raw_write = max_size - GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN;
+
+	regmap = devm_regmap_init(&spi->dev, NULL, spi, &regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	error = goodix_berlin_probe(&spi->dev, spi->irq,
+				    &goodix_berlin_spi_input_id, regmap);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static const struct spi_device_id goodix_berlin_spi_ids[] = {
+	{ "gt9916" },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, goodix_berlin_spi_ids);
+
+static const struct of_device_id goodix_berlin_spi_of_match[] = {
+	{ .compatible = "goodix,gt9916", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, goodix_berlin_spi_of_match);
+
+static struct spi_driver goodix_berlin_spi_driver = {
+	.driver = {
+		.name = "goodix-berlin-spi",
+		.of_match_table = goodix_berlin_spi_of_match,
+		.pm = pm_sleep_ptr(&goodix_berlin_pm_ops),
+	},
+	.probe = goodix_berlin_spi_probe,
+	.id_table = goodix_berlin_spi_ids,
+};
+module_spi_driver(goodix_berlin_spi_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Goodix Berlin SPI Touchscreen driver");
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");

drivers/input/touchscreen/imagis.c

 // SPDX-License-Identifier: GPL-2.0-only
 
+#include <linux/bitfield.h>
 #include <linux/bits.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
@@ -11,9 +12,15 @@
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
+#define IST3032C_WHOAMI			0x32c
+
+#define IST3038B_REG_STATUS		0x20
+#define IST3038B_REG_CHIPID		0x30
+#define IST3038B_WHOAMI			0x30380b
+
 #define IST3038C_HIB_ACCESS		(0x800B << 16)
 #define IST3038C_DIRECT_ACCESS		BIT(31)
-#define IST3038C_REG_CHIPID		0x40001000
+#define IST3038C_REG_CHIPID		(0x40001000 | IST3038C_DIRECT_ACCESS)
 #define IST3038C_REG_HIB_BASE		0x30000100
 #define IST3038C_REG_TOUCH_STATUS	(IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS)
 #define IST3038C_REG_TOUCH_COORD	(IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS | 0x8)
@@ -23,19 +30,29 @@
 #define IST3038C_I2C_RETRY_COUNT	3
 #define IST3038C_MAX_FINGER_NUM		10
 #define IST3038C_X_MASK			GENMASK(23, 12)
-#define IST3038C_X_SHIFT		12
 #define IST3038C_Y_MASK			GENMASK(11, 0)
 #define IST3038C_AREA_MASK		GENMASK(27, 24)
-#define IST3038C_AREA_SHIFT		24
 #define IST3038C_FINGER_COUNT_MASK	GENMASK(15, 12)
-#define IST3038C_FINGER_COUNT_SHIFT	12
 #define IST3038C_FINGER_STATUS_MASK	GENMASK(9, 0)
+#define IST3032C_KEY_STATUS_MASK	GENMASK(20, 16)
+
+struct imagis_properties {
+	unsigned int interrupt_msg_cmd;
+	unsigned int touch_coord_cmd;
+	unsigned int whoami_cmd;
+	unsigned int whoami_val;
+	bool protocol_b;
+	bool touch_keys_supported;
+};
 
 struct imagis_ts {
 	struct i2c_client *client;
+	const struct imagis_properties *tdata;
 	struct input_dev *input_dev;
 	struct touchscreen_properties prop;
 	struct regulator_bulk_data supplies[2];
+	u32 keycodes[5];
+	int num_keycodes;
 };
 
 static int imagis_i2c_read_reg(struct imagis_ts *ts,
@@ -80,20 +97,18 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id)
 {
 	struct imagis_ts *ts = dev_id;
 	u32 intr_message, finger_status;
-	unsigned int finger_count, finger_pressed;
+	unsigned int finger_count, finger_pressed, key_pressed;
 	int i;
 	int error;
 
-	error = imagis_i2c_read_reg(ts, IST3038C_REG_INTR_MESSAGE,
-				    &intr_message);
+	error = imagis_i2c_read_reg(ts, ts->tdata->interrupt_msg_cmd, &intr_message);
 	if (error) {
 		dev_err(&ts->client->dev,
 			"failed to read the interrupt message: %d\n", error);
 		goto out;
 	}
 
-	finger_count = (intr_message & IST3038C_FINGER_COUNT_MASK) >>
-				IST3038C_FINGER_COUNT_SHIFT;
+	finger_count = FIELD_GET(IST3038C_FINGER_COUNT_MASK, intr_message);
 	if (finger_count > IST3038C_MAX_FINGER_NUM) {
 		dev_err(&ts->client->dev,
 			"finger count %d is more than maximum supported\n",
@@ -101,12 +116,16 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id)
 		goto out;
 	}
 
-	finger_pressed = intr_message & IST3038C_FINGER_STATUS_MASK;
+	finger_pressed = FIELD_GET(IST3038C_FINGER_STATUS_MASK, intr_message);
 
 	for (i = 0; i < finger_count; i++) {
-		error = imagis_i2c_read_reg(ts,
-					    IST3038C_REG_TOUCH_COORD + (i * 4),
-					    &finger_status);
+		if (ts->tdata->protocol_b)
+			error = imagis_i2c_read_reg(ts,
+						    ts->tdata->touch_coord_cmd, &finger_status);
+		else
+			error = imagis_i2c_read_reg(ts,
+						    ts->tdata->touch_coord_cmd + (i * 4),
+						    &finger_status);
 		if (error) {
 			dev_err(&ts->client->dev,
 				"failed to read coordinates for finger %d: %d\n",
@@ -118,14 +137,19 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id)
 		input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER,
 					   finger_pressed & BIT(i));
 		touchscreen_report_pos(ts->input_dev, &ts->prop,
-				       (finger_status & IST3038C_X_MASK) >>
-						IST3038C_X_SHIFT,
-				       finger_status & IST3038C_Y_MASK, 1);
+				       FIELD_GET(IST3038C_X_MASK, finger_status),
+				       FIELD_GET(IST3038C_Y_MASK, finger_status),
+				       true);
 		input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,
-				 (finger_status & IST3038C_AREA_MASK) >>
-					IST3038C_AREA_SHIFT);
+				 FIELD_GET(IST3038C_AREA_MASK, finger_status));
 	}
 
+	key_pressed = FIELD_GET(IST3032C_KEY_STATUS_MASK, intr_message);
+
+	for (int i = 0; i < ts->num_keycodes; i++)
+		input_report_key(ts->input_dev, ts->keycodes[i],
+				 key_pressed & BIT(i));
+
 	input_mt_sync_frame(ts->input_dev);
 	input_sync(ts->input_dev);
 
@@ -210,7 +234,24 @@ static int imagis_init_input_dev(struct imagis_ts *ts)
 
 	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
 	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
-	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 16, 0, 0);
+	if (ts->tdata->touch_keys_supported) {
+		ts->num_keycodes = of_property_read_variable_u32_array(
+				ts->client->dev.of_node, "linux,keycodes",
+				ts->keycodes, 0, ARRAY_SIZE(ts->keycodes));
+		if (ts->num_keycodes <= 0) {
+			ts->keycodes[0] = KEY_APPSELECT;
+			ts->keycodes[1] = KEY_BACK;
+			ts->num_keycodes = 2;
+		}
+
+		input_dev->keycodemax = ts->num_keycodes;
+		input_dev->keycodesize = sizeof(ts->keycodes[0]);
+		input_dev->keycode = ts->keycodes;
+	}
+
+	for (int i = 0; i < ts->num_keycodes; i++)
+		input_set_capability(input_dev, EV_KEY, ts->keycodes[i]);
 
 	touchscreen_parse_properties(input_dev, true, &ts->prop);
 	if (!ts->prop.max_x || !ts->prop.max_y) {
@@ -261,6 +302,12 @@ static int imagis_probe(struct i2c_client *i2c)
 
 	ts->client = i2c;
 
+	ts->tdata = device_get_match_data(dev);
+	if (!ts->tdata) {
+		dev_err(dev, "missing chip data\n");
+		return -EINVAL;
+	}
+
 	error = imagis_init_regulators(ts);
 	if (error) {
 		dev_err(dev, "regulator init error: %d\n", error);
@@ -279,15 +326,13 @@ static int imagis_probe(struct i2c_client *i2c)
 		return error;
 	}
 
-	error = imagis_i2c_read_reg(ts,
-			IST3038C_REG_CHIPID | IST3038C_DIRECT_ACCESS,
-			&chip_id);
+	error = imagis_i2c_read_reg(ts, ts->tdata->whoami_cmd, &chip_id);
 	if (error) {
 		dev_err(dev, "chip ID read failure: %d\n", error);
 		return error;
 	}
 
-	if (chip_id != IST3038C_WHOAMI) {
+	if (chip_id != ts->tdata->whoami_val) {
 		dev_err(dev, "unknown chip ID: 0x%x\n", chip_id);
 		return -EINVAL;
 	}
@@ -343,9 +388,34 @@ static int imagis_resume(struct device *dev)
 
 static DEFINE_SIMPLE_DEV_PM_OPS(imagis_pm_ops, imagis_suspend, imagis_resume);
 
+static const struct imagis_properties imagis_3032c_data = {
+	.interrupt_msg_cmd = IST3038C_REG_INTR_MESSAGE,
+	.touch_coord_cmd = IST3038C_REG_TOUCH_COORD,
+	.whoami_cmd = IST3038C_REG_CHIPID,
+	.whoami_val = IST3032C_WHOAMI,
+	.touch_keys_supported = true,
+};
+
+static const struct imagis_properties imagis_3038b_data = {
+	.interrupt_msg_cmd = IST3038B_REG_STATUS,
+	.touch_coord_cmd = IST3038B_REG_STATUS,
+	.whoami_cmd = IST3038B_REG_CHIPID,
+	.whoami_val = IST3038B_WHOAMI,
+	.protocol_b = true,
+};
+
+static const struct imagis_properties imagis_3038c_data = {
+	.interrupt_msg_cmd = IST3038C_REG_INTR_MESSAGE,
+	.touch_coord_cmd = IST3038C_REG_TOUCH_COORD,
+	.whoami_cmd = IST3038C_REG_CHIPID,
+	.whoami_val = IST3038C_WHOAMI,
+};
+
 #ifdef CONFIG_OF
 static const struct of_device_id imagis_of_match[] = {
-	{ .compatible = "imagis,ist3038c", },
+	{ .compatible = "imagis,ist3032c", .data = &imagis_3032c_data },
+	{ .compatible = "imagis,ist3038b", .data = &imagis_3038b_data },
+	{ .compatible = "imagis,ist3038c", .data = &imagis_3038c_data },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, imagis_of_match);

drivers/input/touchscreen/ti_am335x_tsc.c

@@ -157,7 +157,6 @@ static void titsc_step_config(struct titsc *ts_dev)
 			     n++ == 0 ? STEPCONFIG_OPENDLY : 0);
 	}
 
-	config = 0;
 	config = STEPCONFIG_MODE_HWSYNC |
 			STEPCONFIG_AVG_16 | ts_dev->bit_yn |
 			STEPCONFIG_INM_ADCREFM;

include/linux/input.h

@@ -514,7 +514,7 @@ void input_enable_softrepeat(struct input_dev *dev, int delay, int period);
 
 bool input_device_enabled(struct input_dev *dev);
 
-extern struct class input_class;
+extern const struct class input_class;
 
 /**
  * struct ff_device - force-feedback part of an input device

include/linux/input/navpoint.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  Copyright (C) 2012 Paul Parsons <lost.distance@yahoo.com>
- */
-
-struct navpoint_platform_data {
-	int		port;		/* PXA SSP port for pxa_ssp_request() */
-};

include/linux/serio.h

@@ -15,7 +15,7 @@
 #include <linux/mod_devicetable.h>
 #include <uapi/linux/serio.h>
 
-extern struct bus_type serio_bus;
+extern const struct bus_type serio_bus;
 
 struct serio {
 	void *port_data;