Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:
 "Mostly existing driver fixes plus a new driver for game controllers
  directly connected to Nintendo 64, and an enhancement for keyboards
  driven by Chrome OS EC to communicate layout of the top row to
  userspace"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (47 commits)
  Input: st1232 - fix NORMAL vs. IDLE state handling
  Input: aiptek - convert sysfs sprintf/snprintf family to sysfs_emit
  Input: alps - fix spelling of "positive"
  ARM: dts: cros-ec-keyboard: Use keymap macros
  dt-bindings: input: Fix the keymap for LOCK key
  dt-bindings: input: Create macros for cros-ec keymap
  Input: cros-ec-keyb - expose function row physical map to userspace
  dt-bindings: input: cros-ec-keyb: Add a new property describing top row
  Input: applespi - fix occasional crc errors under load.
  Input: applespi - don't wait for responses to commands indefinitely.
  Input: st1232 - add IDLE state as ready condition
  Input: zinitix - fix return type of zinitix_init_touch()
  Input: i8042 - add ASUS Zenbook Flip to noselftest list
  Input: add missing dependencies on CONFIG_HAS_IOMEM
  Input: joydev - prevent potential read overflow in ioctl
  Input: elo - fix an error code in elo_connect()
  Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S
  Input: sur40 - fix an error code in sur40_probe()
  Input: elants_i2c - detect enum overflow
  Input: zinitix - remove unneeded semicolon
  ...

Documentation/ABI/testing/sysfs-driver-input-cros-ec-keyb

+What:		/sys/class/input/input(x)/device/function_row_physmap
+Date:		January 2021
+Contact:	Philip Chen <philipchen@chromium.org>
+Description:	A space separated list of scancodes for the top row keys,
+		ordered by the physical positions of the keys, from left
+		to right.

Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml

@@ -31,6 +31,17 @@ properties:
       if the EC does not have its own logic or hardware for this.
     type: boolean
 
+  function-row-physmap:
+    minItems: 1
+    maxItems: 15
+    description: |
+      An ordered u32 array describing the rows/columns (in the scan matrix)
+      of top row keys from physical left (KEY_F1) to right. Each entry
+      encodes the row/column as:
+      (((row) & 0xFF) << 24) | (((column) & 0xFF) << 16)
+      where the lower 16 bits are reserved. This property is specified only
+      when the keyboard has a custom design for the top row keys.
+
 required:
   - compatible
 
@@ -38,11 +49,24 @@ unevaluatedProperties: false
 
 examples:
   - |
+    #include <dt-bindings/input/input.h>
     cros-ec-keyb {
         compatible = "google,cros-ec-keyb";
         keypad,num-rows = <8>;
         keypad,num-columns = <13>;
         google,needs-ghost-filter;
+        function-row-physmap = <
+            MATRIX_KEY(0x00, 0x02, 0)   /* T1 */
+            MATRIX_KEY(0x03, 0x02, 0)   /* T2 */
+            MATRIX_KEY(0x02, 0x02, 0)   /* T3 */
+            MATRIX_KEY(0x01, 0x02, 0)   /* T4 */
+            MATRIX_KEY(0x03, 0x04, 0)   /* T5 */
+            MATRIX_KEY(0x02, 0x04, 0)   /* T6 */
+            MATRIX_KEY(0x01, 0x04, 0)   /* T7 */
+            MATRIX_KEY(0x02, 0x09, 0)   /* T8 */
+            MATRIX_KEY(0x01, 0x09, 0)   /* T9 */
+            MATRIX_KEY(0x00, 0x04, 0)   /* T10 */
+        >;
         /*
          * Keymap entries take the form of 0xRRCCKKKK where
          * RR=Row CC=Column KKKK=Key Code

arch/arm/boot/dts/cros-ec-keyboard.dtsi

@@ -6,103 +6,18 @@
 */
 
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/input/cros-ec-keyboard.h>
 
 &cros_ec {
-	keyboard-controller {
+	keyboard_controller: keyboard-controller {
 		compatible = "google,cros-ec-keyb";
 		keypad,num-rows = <8>;
 		keypad,num-columns = <13>;
 		google,needs-ghost-filter;
 
 		linux,keymap = <
-			MATRIX_KEY(0x00, 0x01, KEY_LEFTMETA)
-			MATRIX_KEY(0x00, 0x02, KEY_F1)
-			MATRIX_KEY(0x00, 0x03, KEY_B)
-			MATRIX_KEY(0x00, 0x04, KEY_F10)
-			MATRIX_KEY(0x00, 0x05, KEY_RO)
-			MATRIX_KEY(0x00, 0x06, KEY_N)
-			MATRIX_KEY(0x00, 0x08, KEY_EQUAL)
-			MATRIX_KEY(0x00, 0x0a, KEY_RIGHTALT)
-
-			MATRIX_KEY(0x01, 0x01, KEY_ESC)
-			MATRIX_KEY(0x01, 0x02, KEY_F4)
-			MATRIX_KEY(0x01, 0x03, KEY_G)
-			MATRIX_KEY(0x01, 0x04, KEY_F7)
-			MATRIX_KEY(0x01, 0x06, KEY_H)
-			MATRIX_KEY(0x01, 0x08, KEY_APOSTROPHE)
-			MATRIX_KEY(0x01, 0x09, KEY_F9)
-			MATRIX_KEY(0x01, 0x0b, KEY_BACKSPACE)
-			MATRIX_KEY(0x01, 0x0c, KEY_HENKAN)
-
-			MATRIX_KEY(0x02, 0x00, KEY_LEFTCTRL)
-			MATRIX_KEY(0x02, 0x01, KEY_TAB)
-			MATRIX_KEY(0x02, 0x02, KEY_F3)
-			MATRIX_KEY(0x02, 0x03, KEY_T)
-			MATRIX_KEY(0x02, 0x04, KEY_F6)
-			MATRIX_KEY(0x02, 0x05, KEY_RIGHTBRACE)
-			MATRIX_KEY(0x02, 0x06, KEY_Y)
-			MATRIX_KEY(0x02, 0x07, KEY_102ND)
-			MATRIX_KEY(0x02, 0x08, KEY_LEFTBRACE)
-			MATRIX_KEY(0x02, 0x09, KEY_F8)
-			MATRIX_KEY(0x02, 0x0a, KEY_YEN)
-
-			MATRIX_KEY(0x03, 0x00, KEY_LEFTMETA)
-			MATRIX_KEY(0x03, 0x01, KEY_GRAVE)
-			MATRIX_KEY(0x03, 0x02, KEY_F2)
-			MATRIX_KEY(0x03, 0x03, KEY_5)
-			MATRIX_KEY(0x03, 0x04, KEY_F5)
-			MATRIX_KEY(0x03, 0x06, KEY_6)
-			MATRIX_KEY(0x03, 0x08, KEY_MINUS)
-			MATRIX_KEY(0x03, 0x09, KEY_F13)
-			MATRIX_KEY(0x03, 0x0b, KEY_BACKSLASH)
-			MATRIX_KEY(0x03, 0x0c, KEY_MUHENKAN)
-
-			MATRIX_KEY(0x04, 0x00, KEY_RIGHTCTRL)
-			MATRIX_KEY(0x04, 0x01, KEY_A)
-			MATRIX_KEY(0x04, 0x02, KEY_D)
-			MATRIX_KEY(0x04, 0x03, KEY_F)
-			MATRIX_KEY(0x04, 0x04, KEY_S)
-			MATRIX_KEY(0x04, 0x05, KEY_K)
-			MATRIX_KEY(0x04, 0x06, KEY_J)
-			MATRIX_KEY(0x04, 0x08, KEY_SEMICOLON)
-			MATRIX_KEY(0x04, 0x09, KEY_L)
-			MATRIX_KEY(0x04, 0x0a, KEY_BACKSLASH)
-			MATRIX_KEY(0x04, 0x0b, KEY_ENTER)
-
-			MATRIX_KEY(0x05, 0x01, KEY_Z)
-			MATRIX_KEY(0x05, 0x02, KEY_C)
-			MATRIX_KEY(0x05, 0x03, KEY_V)
-			MATRIX_KEY(0x05, 0x04, KEY_X)
-			MATRIX_KEY(0x05, 0x05, KEY_COMMA)
-			MATRIX_KEY(0x05, 0x06, KEY_M)
-			MATRIX_KEY(0x05, 0x07, KEY_LEFTSHIFT)
-			MATRIX_KEY(0x05, 0x08, KEY_SLASH)
-			MATRIX_KEY(0x05, 0x09, KEY_DOT)
-			MATRIX_KEY(0x05, 0x0b, KEY_SPACE)
-
-			MATRIX_KEY(0x06, 0x01, KEY_1)
-			MATRIX_KEY(0x06, 0x02, KEY_3)
-			MATRIX_KEY(0x06, 0x03, KEY_4)
-			MATRIX_KEY(0x06, 0x04, KEY_2)
-			MATRIX_KEY(0x06, 0x05, KEY_8)
-			MATRIX_KEY(0x06, 0x06, KEY_7)
-			MATRIX_KEY(0x06, 0x08, KEY_0)
-			MATRIX_KEY(0x06, 0x09, KEY_9)
-			MATRIX_KEY(0x06, 0x0a, KEY_LEFTALT)
-			MATRIX_KEY(0x06, 0x0b, KEY_DOWN)
-			MATRIX_KEY(0x06, 0x0c, KEY_RIGHT)
-
-			MATRIX_KEY(0x07, 0x01, KEY_Q)
-			MATRIX_KEY(0x07, 0x02, KEY_E)
-			MATRIX_KEY(0x07, 0x03, KEY_R)
-			MATRIX_KEY(0x07, 0x04, KEY_W)
-			MATRIX_KEY(0x07, 0x05, KEY_I)
-			MATRIX_KEY(0x07, 0x06, KEY_U)
-			MATRIX_KEY(0x07, 0x07, KEY_RIGHTSHIFT)
-			MATRIX_KEY(0x07, 0x08, KEY_P)
-			MATRIX_KEY(0x07, 0x09, KEY_O)
-			MATRIX_KEY(0x07, 0x0b, KEY_UP)
-			MATRIX_KEY(0x07, 0x0c, KEY_LEFT)
+			CROS_STD_TOP_ROW_KEYMAP
+			CROS_STD_MAIN_KEYMAP
 		>;
 	};
 };

drivers/input/joydev.c

@@ -456,7 +456,7 @@ static int joydev_handle_JSIOCSAXMAP(struct joydev *joydev,
 	if (IS_ERR(abspam))
 		return PTR_ERR(abspam);
 
-	for (i = 0; i < joydev->nabs; i++) {
+	for (i = 0; i < len && i < joydev->nabs; i++) {
 		if (abspam[i] > ABS_MAX) {
 			retval = -EINVAL;
 			goto out;
@@ -480,6 +480,9 @@ static int joydev_handle_JSIOCSBTNMAP(struct joydev *joydev,
 	int i;
 	int retval = 0;
 
+	if (len % sizeof(*keypam))
+		return -EINVAL;
+
 	len = min(len, sizeof(joydev->keypam));
 
 	/* Validate the map. */
@@ -487,7 +490,7 @@ static int joydev_handle_JSIOCSBTNMAP(struct joydev *joydev,
 	if (IS_ERR(keypam))
 		return PTR_ERR(keypam);
 
-	for (i = 0; i < joydev->nkey; i++) {
+	for (i = 0; i < (len / 2) && i < joydev->nkey; i++) {
 		if (keypam[i] > KEY_MAX || keypam[i] < BTN_MISC) {
 			retval = -EINVAL;
 			goto out;

drivers/input/joystick/Kconfig

@@ -382,4 +382,11 @@ config JOYSTICK_FSIA6B
 	  To compile this driver as a module, choose M here: the
 	  module will be called fsia6b.
 
+config JOYSTICK_N64
+	bool "N64 controller"
+	depends on MACH_NINTENDO64
+	help
+	  Say Y here if you want enable support for the four
+	  built-in controller ports on the Nintendo 64 console.
+
 endif

drivers/input/joystick/Makefile

@@ -24,6 +24,7 @@ obj-$(CONFIG_JOYSTICK_INTERACT)		+= interact.o
 obj-$(CONFIG_JOYSTICK_JOYDUMP)		+= joydump.o
 obj-$(CONFIG_JOYSTICK_MAGELLAN)		+= magellan.o
 obj-$(CONFIG_JOYSTICK_MAPLE)		+= maplecontrol.o
+obj-$(CONFIG_JOYSTICK_N64)		+= n64joy.o
 obj-$(CONFIG_JOYSTICK_PSXPAD_SPI)	+= psxpad-spi.o
 obj-$(CONFIG_JOYSTICK_PXRC)		+= pxrc.o
 obj-$(CONFIG_JOYSTICK_SIDEWINDER)	+= sidewinder.o
@@ -37,4 +38,3 @@ obj-$(CONFIG_JOYSTICK_WARRIOR)		+= warrior.o
 obj-$(CONFIG_JOYSTICK_WALKERA0701)	+= walkera0701.o
 obj-$(CONFIG_JOYSTICK_XPAD)		+= xpad.o
 obj-$(CONFIG_JOYSTICK_ZHENHUA)		+= zhenhua.o
-

drivers/input/joystick/n64joy.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Support for the four N64 controllers.
+ *
+ * Copyright (c) 2021 Lauri Kasanen
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/limits.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+
+MODULE_AUTHOR("Lauri Kasanen <cand@gmx.com>");
+MODULE_DESCRIPTION("Driver for N64 controllers");
+MODULE_LICENSE("GPL");
+
+#define PIF_RAM 0x1fc007c0
+
+#define SI_DRAM_REG 0
+#define SI_READ_REG 1
+#define SI_WRITE_REG 4
+#define SI_STATUS_REG 6
+
+#define SI_STATUS_DMA_BUSY  BIT(0)
+#define SI_STATUS_IO_BUSY   BIT(1)
+
+#define N64_CONTROLLER_ID 0x0500
+
+#define MAX_CONTROLLERS 4
+
+static const char *n64joy_phys[MAX_CONTROLLERS] = {
+	"n64joy/port0",
+	"n64joy/port1",
+	"n64joy/port2",
+	"n64joy/port3",
+};
+
+struct n64joy_priv {
+	u64 si_buf[8] ____cacheline_aligned;
+	struct timer_list timer;
+	struct mutex n64joy_mutex;
+	struct input_dev *n64joy_dev[MAX_CONTROLLERS];
+	u32 __iomem *reg_base;
+	u8 n64joy_opened;
+};
+
+struct joydata {
+	unsigned int: 16; /* unused */
+	unsigned int err: 2;
+	unsigned int: 14; /* unused */
+
+	union {
+		u32 data;
+
+		struct {
+			unsigned int a: 1;
+			unsigned int b: 1;
+			unsigned int z: 1;
+			unsigned int start: 1;
+			unsigned int up: 1;
+			unsigned int down: 1;
+			unsigned int left: 1;
+			unsigned int right: 1;
+			unsigned int: 2; /* unused */
+			unsigned int l: 1;
+			unsigned int r: 1;
+			unsigned int c_up: 1;
+			unsigned int c_down: 1;
+			unsigned int c_left: 1;
+			unsigned int c_right: 1;
+			signed int x: 8;
+			signed int y: 8;
+		};
+	};
+};
+
+static void n64joy_write_reg(u32 __iomem *reg_base, const u8 reg, const u32 value)
+{
+	writel(value, reg_base + reg);
+}
+
+static u32 n64joy_read_reg(u32 __iomem *reg_base, const u8 reg)
+{
+	return readl(reg_base + reg);
+}
+
+static void n64joy_wait_si_dma(u32 __iomem *reg_base)
+{
+	while (n64joy_read_reg(reg_base, SI_STATUS_REG) &
+	       (SI_STATUS_DMA_BUSY | SI_STATUS_IO_BUSY))
+		cpu_relax();
+}
+
+static void n64joy_exec_pif(struct n64joy_priv *priv, const u64 in[8])
+{
+	unsigned long flags;
+
+	dma_cache_wback_inv((unsigned long) in, 8 * 8);
+	dma_cache_inv((unsigned long) priv->si_buf, 8 * 8);
+
+	local_irq_save(flags);
+
+	n64joy_wait_si_dma(priv->reg_base);
+
+	barrier();
+	n64joy_write_reg(priv->reg_base, SI_DRAM_REG, virt_to_phys(in));
+	barrier();
+	n64joy_write_reg(priv->reg_base, SI_WRITE_REG, PIF_RAM);
+	barrier();
+
+	n64joy_wait_si_dma(priv->reg_base);
+
+	barrier();
+	n64joy_write_reg(priv->reg_base, SI_DRAM_REG, virt_to_phys(priv->si_buf));
+	barrier();
+	n64joy_write_reg(priv->reg_base, SI_READ_REG, PIF_RAM);
+	barrier();
+
+	n64joy_wait_si_dma(priv->reg_base);
+
+	local_irq_restore(flags);
+}
+
+static const u64 polldata[] ____cacheline_aligned = {
+	0xff010401ffffffff,
+	0xff010401ffffffff,
+	0xff010401ffffffff,
+	0xff010401ffffffff,
+	0xfe00000000000000,
+	0,
+	0,
+	1
+};
+
+static void n64joy_poll(struct timer_list *t)
+{
+	const struct joydata *data;
+	struct n64joy_priv *priv = container_of(t, struct n64joy_priv, timer);
+	struct input_dev *dev;
+	u32 i;
+
+	n64joy_exec_pif(priv, polldata);
+
+	data = (struct joydata *) priv->si_buf;
+
+	for (i = 0; i < MAX_CONTROLLERS; i++) {
+		if (!priv->n64joy_dev[i])
+			continue;
+
+		dev = priv->n64joy_dev[i];
+
+		/* d-pad */
+		input_report_key(dev, BTN_DPAD_UP, data[i].up);
+		input_report_key(dev, BTN_DPAD_DOWN, data[i].down);
+		input_report_key(dev, BTN_DPAD_LEFT, data[i].left);
+		input_report_key(dev, BTN_DPAD_RIGHT, data[i].right);
+
+		/* c buttons */
+		input_report_key(dev, BTN_FORWARD, data[i].c_up);
+		input_report_key(dev, BTN_BACK, data[i].c_down);
+		input_report_key(dev, BTN_LEFT, data[i].c_left);
+		input_report_key(dev, BTN_RIGHT, data[i].c_right);
+
+		/* matching buttons */
+		input_report_key(dev, BTN_START, data[i].start);
+		input_report_key(dev, BTN_Z, data[i].z);
+
+		/* remaining ones: a, b, l, r */
+		input_report_key(dev, BTN_0, data[i].a);
+		input_report_key(dev, BTN_1, data[i].b);
+		input_report_key(dev, BTN_2, data[i].l);
+		input_report_key(dev, BTN_3, data[i].r);
+
+		input_report_abs(dev, ABS_X, data[i].x);
+		input_report_abs(dev, ABS_Y, data[i].y);
+
+		input_sync(dev);
+	}
+
+	mod_timer(&priv->timer, jiffies + msecs_to_jiffies(16));
+}
+
+static int n64joy_open(struct input_dev *dev)
+{
+	struct n64joy_priv *priv = input_get_drvdata(dev);
+	int err;
+
+	err = mutex_lock_interruptible(&priv->n64joy_mutex);
+	if (err)
+		return err;
+
+	if (!priv->n64joy_opened) {
+		/*
+		 * We could use the vblank irq, but it's not important if
+		 * the poll point slightly changes.
+		 */
+		timer_setup(&priv->timer, n64joy_poll, 0);
+		mod_timer(&priv->timer, jiffies + msecs_to_jiffies(16));
+	}
+
+	priv->n64joy_opened++;
+
+	mutex_unlock(&priv->n64joy_mutex);
+	return err;
+}
+
+static void n64joy_close(struct input_dev *dev)
+{
+	struct n64joy_priv *priv = input_get_drvdata(dev);
+
+	mutex_lock(&priv->n64joy_mutex);
+	if (!--priv->n64joy_opened)
+		del_timer_sync(&priv->timer);
+	mutex_unlock(&priv->n64joy_mutex);
+}
+
+static const u64 __initconst scandata[] ____cacheline_aligned = {
+	0xff010300ffffffff,
+	0xff010300ffffffff,
+	0xff010300ffffffff,
+	0xff010300ffffffff,
+	0xfe00000000000000,
+	0,
+	0,
+	1
+};
+
+/*
+ * The target device is embedded and RAM-constrained. We save RAM
+ * by initializing in __init code that gets dropped late in boot.
+ * For the same reason there is no module or unloading support.
+ */
+static int __init n64joy_probe(struct platform_device *pdev)
+{
+	const struct joydata *data;
+	struct n64joy_priv *priv;
+	struct input_dev *dev;
+	int err = 0;
+	u32 i, j, found = 0;
+
+	priv = kzalloc(sizeof(struct n64joy_priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+	mutex_init(&priv->n64joy_mutex);
+
+	priv->reg_base = devm_platform_ioremap_resource(pdev, 0);
+	if (!priv->reg_base) {
+		err = -EINVAL;
+		goto fail;
+	}
+
+	/* The controllers are not hotpluggable, so we can scan in init */
+	n64joy_exec_pif(priv, scandata);
+
+	data = (struct joydata *) priv->si_buf;
+
+	for (i = 0; i < MAX_CONTROLLERS; i++) {
+		if (!data[i].err && data[i].data >> 16 == N64_CONTROLLER_ID) {
+			found++;
+
+			dev = priv->n64joy_dev[i] = input_allocate_device();
+			if (!priv->n64joy_dev[i]) {
+				err = -ENOMEM;
+				goto fail;
+			}
+
+			input_set_drvdata(dev, priv);
+
+			dev->name = "N64 controller";
+			dev->phys = n64joy_phys[i];
+			dev->id.bustype = BUS_HOST;
+			dev->id.vendor = 0;
+			dev->id.product = data[i].data >> 16;
+			dev->id.version = 0;
+			dev->dev.parent = &pdev->dev;
+
+			dev->open = n64joy_open;
+			dev->close = n64joy_close;
+
+			/* d-pad */
+			input_set_capability(dev, EV_KEY, BTN_DPAD_UP);
+			input_set_capability(dev, EV_KEY, BTN_DPAD_DOWN);
+			input_set_capability(dev, EV_KEY, BTN_DPAD_LEFT);
+			input_set_capability(dev, EV_KEY, BTN_DPAD_RIGHT);
+			/* c buttons */
+			input_set_capability(dev, EV_KEY, BTN_LEFT);
+			input_set_capability(dev, EV_KEY, BTN_RIGHT);
+			input_set_capability(dev, EV_KEY, BTN_FORWARD);
+			input_set_capability(dev, EV_KEY, BTN_BACK);
+			/* matching buttons */
+			input_set_capability(dev, EV_KEY, BTN_START);
+			input_set_capability(dev, EV_KEY, BTN_Z);
+			/* remaining ones: a, b, l, r */
+			input_set_capability(dev, EV_KEY, BTN_0);
+			input_set_capability(dev, EV_KEY, BTN_1);
+			input_set_capability(dev, EV_KEY, BTN_2);
+			input_set_capability(dev, EV_KEY, BTN_3);
+
+			for (j = 0; j < 2; j++)
+				input_set_abs_params(dev, ABS_X + j,
+						     S8_MIN, S8_MAX, 0, 0);
+
+			err = input_register_device(dev);
+			if (err) {
+				input_free_device(dev);
+				goto fail;
+			}
+		}
+	}
+
+	pr_info("%u controller(s) connected\n", found);
+
+	if (!found)
+		return -ENODEV;
+
+	return 0;
+fail:
+	for (i = 0; i < MAX_CONTROLLERS; i++) {
+		if (!priv->n64joy_dev[i])
+			continue;
+		input_unregister_device(priv->n64joy_dev[i]);
+	}
+	return err;
+}
+
+static struct platform_driver n64joy_driver = {
+	.driver = {
+		.name = "n64joy",
+	},
+};
+
+static int __init n64joy_init(void)
+{
+	return platform_driver_probe(&n64joy_driver, n64joy_probe);
+}
+
+module_init(n64joy_init);

drivers/input/joystick/xpad.c

@@ -305,6 +305,7 @@ static const struct xpad_device {
 	{ 0x1bad, 0xfd00, "Razer Onza TE", 0, XTYPE_XBOX360 },
 	{ 0x1bad, 0xfd01, "Razer Onza", 0, XTYPE_XBOX360 },
 	{ 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 },

drivers/input/keyboard/Kconfig

@@ -446,7 +446,7 @@ config KEYBOARD_MPR121
 
 config KEYBOARD_SNVS_PWRKEY
 	tristate "IMX SNVS Power Key Driver"
-	depends on ARCH_MXC || COMPILE_TEST
+	depends on ARCH_MXC || (COMPILE_TEST && HAS_IOMEM)
 	depends on OF
 	help
 	  This is the snvs powerkey driver for the Freescale i.MX application
@@ -685,7 +685,7 @@ config KEYBOARD_OMAP
 
 config KEYBOARD_OMAP4
 	tristate "TI OMAP4+ keypad support"
-	depends on OF || ARCH_OMAP2PLUS
+	depends on (OF && HAS_IOMEM) || ARCH_OMAP2PLUS
 	select INPUT_MATRIXKMAP
 	help
 	  Say Y here if you want to use the OMAP4+ keypad.
@@ -773,7 +773,7 @@ config KEYBOARD_CAP11XX
 
 config KEYBOARD_BCM
 	tristate "Broadcom keypad driver"
-	depends on OF && HAVE_CLK
+	depends on OF && HAVE_CLK && HAS_IOMEM
 	select INPUT_MATRIXKMAP
 	default ARCH_BCM_CYGNUS
 	help

drivers/input/keyboard/applespi.c

@@ -48,6 +48,7 @@
 #include <linux/efi.h>
 #include <linux/input.h>
 #include <linux/input/mt.h>
+#include <linux/ktime.h>
 #include <linux/leds.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
@@ -409,7 +410,7 @@ struct applespi_data {
 	unsigned int			cmd_msg_cntr;
 	/* lock to protect the above parameters and flags below */
 	spinlock_t			cmd_msg_lock;
-	bool				cmd_msg_queued;
+	ktime_t				cmd_msg_queued;
 	enum applespi_evt_type		cmd_evt_type;
 
 	struct led_classdev		backlight_info;
@@ -729,7 +730,7 @@ static void applespi_msg_complete(struct applespi_data *applespi,
 		wake_up_all(&applespi->drain_complete);
 
 	if (is_write_msg) {
-		applespi->cmd_msg_queued = false;
+		applespi->cmd_msg_queued = 0;
 		applespi_send_cmd_msg(applespi);
 	}
 
@@ -748,6 +749,8 @@ static void applespi_async_write_complete(void *context)
 					 applespi->tx_status,
 					 APPLESPI_STATUS_SIZE);
 
+	udelay(SPI_RW_CHG_DELAY_US);
+
 	if (!applespi_check_write_status(applespi, applespi->wr_m.status)) {
 		/*
 		 * If we got an error, we presumably won't get the expected
@@ -771,9 +774,17 @@ static int applespi_send_cmd_msg(struct applespi_data *applespi)
 		return 0;
 
 	/* check whether send is in progress */
-	if (applespi->cmd_msg_queued)
+	if (applespi->cmd_msg_queued) {
+		if (ktime_ms_delta(ktime_get(), applespi->cmd_msg_queued) < 1000)
 			return 0;
 
+		dev_warn(&applespi->spi->dev, "Command %d timed out\n",
+			 applespi->cmd_evt_type);
+
+		applespi->cmd_msg_queued = 0;
+		applespi->write_active = false;
+	}
+
 	/* set up packet */
 	memset(packet, 0, APPLESPI_PACKET_SIZE);
 
@@ -869,7 +880,7 @@ static int applespi_send_cmd_msg(struct applespi_data *applespi)
 		return sts;
 	}
 
-	applespi->cmd_msg_queued = true;
+	applespi->cmd_msg_queued = ktime_get_coarse();
 	applespi->write_active = true;
 
 	return 0;
@@ -1921,7 +1932,7 @@ static int __maybe_unused applespi_resume(struct device *dev)
 	applespi->drain = false;
 	applespi->have_cl_led_on = false;
 	applespi->have_bl_level = 0;
-	applespi->cmd_msg_queued = false;
+	applespi->cmd_msg_queued = 0;
 	applespi->read_active = false;
 	applespi->write_active = false;
 

drivers/input/keyboard/cros_ec_keyb.c

@@ -27,6 +27,8 @@
 
 #include <asm/unaligned.h>
 
+#define MAX_NUM_TOP_ROW_KEYS   15
+
 /**
  * struct cros_ec_keyb - Structure representing EC keyboard device
  *
@@ -42,6 +44,9 @@
  * @idev: The input device for the matrix keys.
  * @bs_idev: The input device for non-matrix buttons and switches (or NULL).
  * @notifier: interrupt event notifier for transport devices
+ * @function_row_physmap: An array of the encoded rows/columns for the top
+ *                        row function keys, in an order from left to right
+ * @num_function_row_keys: The number of top row keys in a custom keyboard
  */
 struct cros_ec_keyb {
 	unsigned int rows;
@@ -58,6 +63,9 @@ struct cros_ec_keyb {
 	struct input_dev *idev;
 	struct input_dev *bs_idev;
 	struct notifier_block notifier;
+
+	u16 function_row_physmap[MAX_NUM_TOP_ROW_KEYS];
+	size_t num_function_row_keys;
 };
 
 /**
@@ -527,6 +535,11 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev)
 	struct input_dev *idev;
 	const char *phys;
 	int err;
+	struct property *prop;
+	const __be32 *p;
+	u16 *physmap;
+	u32 key_pos;
+	int row, col;
 
 	err = matrix_keypad_parse_properties(dev, &ckdev->rows, &ckdev->cols);
 	if (err)
@@ -578,6 +591,21 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev)
 	ckdev->idev = idev;
 	cros_ec_keyb_compute_valid_keys(ckdev);
 
+	physmap = ckdev->function_row_physmap;
+	of_property_for_each_u32(dev->of_node, "function-row-physmap",
+				 prop, p, key_pos) {
+		if (ckdev->num_function_row_keys == MAX_NUM_TOP_ROW_KEYS) {
+			dev_warn(dev, "Only support up to %d top row keys\n",
+				 MAX_NUM_TOP_ROW_KEYS);
+			break;
+		}
+		row = KEY_ROW(key_pos);
+		col = KEY_COL(key_pos);
+		*physmap = MATRIX_SCAN_CODE(row, col, ckdev->row_shift);
+		physmap++;
+		ckdev->num_function_row_keys++;
+	}
+
 	err = input_register_device(ckdev->idev);
 	if (err) {
 		dev_err(dev, "cannot register input device\n");
@@ -587,6 +615,51 @@ static int cros_ec_keyb_register_matrix(struct cros_ec_keyb *ckdev)
 	return 0;
 }
 
+static ssize_t function_row_physmap_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	ssize_t size = 0;
+	int i;
+	struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
+	u16 *physmap = ckdev->function_row_physmap;
+
+	for (i = 0; i < ckdev->num_function_row_keys; i++)
+		size += scnprintf(buf + size, PAGE_SIZE - size,
+				  "%s%02X", size ? " " : "", physmap[i]);
+	if (size)
+		size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
+
+	return size;
+}
+
+static DEVICE_ATTR_RO(function_row_physmap);
+
+static struct attribute *cros_ec_keyb_attrs[] = {
+	&dev_attr_function_row_physmap.attr,
+	NULL,
+};
+
+static umode_t cros_ec_keyb_attr_is_visible(struct kobject *kobj,
+					    struct attribute *attr,
+					    int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
+
+	if (attr == &dev_attr_function_row_physmap.attr &&
+	    !ckdev->num_function_row_keys)
+		return 0;
+
+	return attr->mode;
+}
+
+static const struct attribute_group cros_ec_keyb_attr_group = {
+	.is_visible = cros_ec_keyb_attr_is_visible,
+	.attrs = cros_ec_keyb_attrs,
+};
+
+
 static int cros_ec_keyb_probe(struct platform_device *pdev)
 {
 	struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
@@ -617,6 +690,12 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
 		return err;
 	}
 
+	err = devm_device_add_group(dev, &cros_ec_keyb_attr_group);
+	if (err) {
+		dev_err(dev, "failed to create attributes. err=%d\n", err);
+		return err;
+	}
+
 	ckdev->notifier.notifier_call = cros_ec_keyb_work;
 	err = blocking_notifier_chain_register(&ckdev->ec->event_notifier,
 					       &ckdev->notifier);

drivers/input/misc/da7280.c

@@ -863,6 +863,7 @@ static void da7280_parse_properties(struct device *dev,
 		gpi_str3[7] = '0' + i;
 		haptics->gpi_ctl[i].polarity = 0;
 		error = device_property_read_string(dev, gpi_str3, &str);
+		if (!error)
 			haptics->gpi_ctl[i].polarity =
 				da7280_haptic_of_gpi_pol_str(dev, str);
 	}
@@ -1299,11 +1300,13 @@ static int __maybe_unused da7280_resume(struct device *dev)
 	return retval;
 }
 
+#ifdef CONFIG_OF
 static const struct of_device_id da7280_of_match[] = {
 	{ .compatible = "dlg,da7280", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, da7280_of_match);
+#endif
 
 static const struct i2c_device_id da7280_i2c_id[] = {
 	{ "da7280", },

drivers/input/mouse/alps.c

@@ -986,7 +986,7 @@ static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
 	case V7_PACKET_ID_TWO:
 		mt[1].x &= ~0x000F;
 		mt[1].y |= 0x000F;
-		/* Detect false-postive touches where x & y report max value */
+		/* Detect false-positive touches where x & y report max value */
 		if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
 			mt[1].x = 0;
 			/* y gets set to 0 at the end of this function */

drivers/input/mouse/synaptics.c

@@ -1106,8 +1106,11 @@ static void synaptics_process_packet(struct psmouse *psmouse)
 					num_fingers = hw.w + 2;
 				break;
 			case 2:
-				if (SYN_MODEL_PEN(info->model_id))
-					;   /* Nothing, treat a pen as a single finger */
+				/*
+				 * SYN_MODEL_PEN(info->model_id): even if
+				 * the device supports pen, we treat it as
+				 * a single finger.
+				 */
 				break;
 			case 4 ... 15:
 				if (SYN_CAP_PALMDETECT(info->capabilities))

drivers/input/serio/Kconfig

@@ -255,7 +255,7 @@ config SERIO_ARC_PS2
 
 config SERIO_APBPS2
 	tristate "GRLIB APBPS2 PS/2 keyboard/mouse controller"
-	depends on OF
+	depends on OF && HAS_IOMEM
 	help
 	  Say Y here if you want support for GRLIB APBPS2 peripherals used
 	  to connect to PS/2 keyboard and/or mouse.

drivers/input/serio/i8042-x86ia64io.h

@@ -588,6 +588,10 @@ static const struct dmi_system_id i8042_dmi_noselftest_table[] = {
 			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 			DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
 		},
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "31"), /* Convertible Notebook */
+		},
 	},
 	{ }
 };

drivers/input/tablet/aiptek.c

@@ -1036,7 +1036,7 @@ static ssize_t show_tabletSize(struct device *dev, struct device_attribute *attr
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%dx%d\n",
+	return sysfs_emit(buf, "%dx%d\n",
 			  input_abs_get_max(aiptek->inputdev, ABS_X) + 1,
 			  input_abs_get_max(aiptek->inputdev, ABS_Y) + 1);
 }
@@ -1064,8 +1064,7 @@ static ssize_t show_tabletPointerMode(struct device *dev, struct device_attribut
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(pointer_mode_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(pointer_mode_map,
 						      aiptek->curSetting.pointerMode));
 }
 
@@ -1101,8 +1100,7 @@ static ssize_t show_tabletCoordinateMode(struct device *dev, struct device_attri
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(coordinate_mode_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(coordinate_mode_map,
 						      aiptek->curSetting.coordinateMode));
 }
 
@@ -1143,8 +1141,7 @@ static ssize_t show_tabletToolMode(struct device *dev, struct device_attribute *
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(tool_mode_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(tool_mode_map,
 						      aiptek->curSetting.toolMode));
 }
 
@@ -1174,10 +1171,9 @@ static ssize_t show_tabletXtilt(struct device *dev, struct device_attribute *att
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
 	if (aiptek->curSetting.xTilt == AIPTEK_TILT_DISABLE) {
-		return snprintf(buf, PAGE_SIZE, "disable\n");
+		return sysfs_emit(buf, "disable\n");
 	} else {
-		return snprintf(buf, PAGE_SIZE, "%d\n",
-				aiptek->curSetting.xTilt);
+		return sysfs_emit(buf, "%d\n", aiptek->curSetting.xTilt);
 	}
 }
 
@@ -1216,10 +1212,9 @@ static ssize_t show_tabletYtilt(struct device *dev, struct device_attribute *att
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
 	if (aiptek->curSetting.yTilt == AIPTEK_TILT_DISABLE) {
-		return snprintf(buf, PAGE_SIZE, "disable\n");
+		return sysfs_emit(buf, "disable\n");
 	} else {
-		return snprintf(buf, PAGE_SIZE, "%d\n",
-				aiptek->curSetting.yTilt);
+		return sysfs_emit(buf, "%d\n", aiptek->curSetting.yTilt);
 	}
 }
 
@@ -1257,7 +1252,7 @@ static ssize_t show_tabletJitterDelay(struct device *dev, struct device_attribut
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", aiptek->curSetting.jitterDelay);
+	return sysfs_emit(buf, "%d\n", aiptek->curSetting.jitterDelay);
 }
 
 static ssize_t
@@ -1286,8 +1281,7 @@ static ssize_t show_tabletProgrammableDelay(struct device *dev, struct device_at
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-			aiptek->curSetting.programmableDelay);
+	return sysfs_emit(buf, "%d\n", aiptek->curSetting.programmableDelay);
 }
 
 static ssize_t
@@ -1316,7 +1310,7 @@ static ssize_t show_tabletEventsReceived(struct device *dev, struct device_attri
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%ld\n", aiptek->eventCount);
+	return sysfs_emit(buf, "%ld\n", aiptek->eventCount);
 }
 
 static DEVICE_ATTR(event_count, S_IRUGO, show_tabletEventsReceived, NULL);
@@ -1355,7 +1349,7 @@ static ssize_t show_tabletDiagnosticMessage(struct device *dev, struct device_at
 	default:
 		return 0;
 	}
-	return snprintf(buf, PAGE_SIZE, retMsg);
+	return sysfs_emit(buf, retMsg);
 }
 
 static DEVICE_ATTR(diagnostic, S_IRUGO, show_tabletDiagnosticMessage, NULL);
@@ -1375,8 +1369,7 @@ static ssize_t show_tabletStylusUpper(struct device *dev, struct device_attribut
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(stylus_button_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(stylus_button_map,
 						      aiptek->curSetting.stylusButtonUpper));
 }
 
@@ -1406,8 +1399,7 @@ static ssize_t show_tabletStylusLower(struct device *dev, struct device_attribut
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(stylus_button_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(stylus_button_map,
 						      aiptek->curSetting.stylusButtonLower));
 }
 
@@ -1444,8 +1436,7 @@ static ssize_t show_tabletMouseLeft(struct device *dev, struct device_attribute
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(mouse_button_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(mouse_button_map,
 						      aiptek->curSetting.mouseButtonLeft));
 }
 
@@ -1474,8 +1465,7 @@ static ssize_t show_tabletMouseMiddle(struct device *dev, struct device_attribut
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(mouse_button_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(mouse_button_map,
 						      aiptek->curSetting.mouseButtonMiddle));
 }
 
@@ -1504,8 +1494,7 @@ static ssize_t show_tabletMouseRight(struct device *dev, struct device_attribute
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n",
-			map_val_to_str(mouse_button_map,
+	return sysfs_emit(buf, "%s\n", map_val_to_str(mouse_button_map,
 						      aiptek->curSetting.mouseButtonRight));
 }
 
@@ -1535,10 +1524,9 @@ static ssize_t show_tabletWheel(struct device *dev, struct device_attribute *att
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
 	if (aiptek->curSetting.wheel == AIPTEK_WHEEL_DISABLE) {
-		return snprintf(buf, PAGE_SIZE, "disable\n");
+		return sysfs_emit(buf, "disable\n");
 	} else {
-		return snprintf(buf, PAGE_SIZE, "%d\n",
-				aiptek->curSetting.wheel);
+		return sysfs_emit(buf, "%d\n", aiptek->curSetting.wheel);
 	}
 }
 
@@ -1568,8 +1556,7 @@ static ssize_t show_tabletExecute(struct device *dev, struct device_attribute *a
 	/* There is nothing useful to display, so a one-line manual
 	 * is in order...
 	 */
-	return snprintf(buf, PAGE_SIZE,
-			"Write anything to this file to program your tablet.\n");
+	return sysfs_emit(buf, "Write anything to this file to program your tablet.\n");
 }
 
 static ssize_t
@@ -1600,7 +1587,7 @@ static ssize_t show_tabletODMCode(struct device *dev, struct device_attribute *a
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.odmCode);
+	return sysfs_emit(buf, "0x%04x\n", aiptek->features.odmCode);
 }
 
 static DEVICE_ATTR(odm_code, S_IRUGO, show_tabletODMCode, NULL);
@@ -1613,7 +1600,7 @@ static ssize_t show_tabletModelCode(struct device *dev, struct device_attribute
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "0x%04x\n", aiptek->features.modelCode);
+	return sysfs_emit(buf, "0x%04x\n", aiptek->features.modelCode);
 }
 
 static DEVICE_ATTR(model_code, S_IRUGO, show_tabletModelCode, NULL);
@@ -1626,8 +1613,7 @@ static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *at
 {
 	struct aiptek *aiptek = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%04x\n",
-			aiptek->features.firmwareCode);
+	return sysfs_emit(buf, "%04x\n", aiptek->features.firmwareCode);
 }
 
 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);

drivers/input/touchscreen/Kconfig

@@ -608,7 +608,7 @@ config TOUCHSCREEN_MTOUCH
 
 config TOUCHSCREEN_IMX6UL_TSC
 	tristate "Freescale i.MX6UL touchscreen controller"
-	depends on (OF && GPIOLIB) || COMPILE_TEST
+	depends on ((OF && GPIOLIB) || COMPILE_TEST) && HAS_IOMEM
 	help
 	  Say Y here if you have a Freescale i.MX6UL, and want to
 	  use the internal touchscreen controller.

drivers/input/touchscreen/elants_i2c.c

@@ -56,6 +56,7 @@
 #define QUEUE_HEADER_SINGLE	0x62
 #define QUEUE_HEADER_NORMAL	0X63
 #define QUEUE_HEADER_WAIT	0x64
+#define QUEUE_HEADER_NORMAL2	0x66
 
 /* Command header definition */
 #define CMD_HEADER_WRITE	0x54
@@ -69,6 +70,7 @@
 #define CMD_HEADER_REK		0x66
 
 /* FW position data */
+#define PACKET_SIZE_OLD		40
 #define PACKET_SIZE		55
 #define MAX_CONTACT_NUM		10
 #define FW_POS_HEADER		0
@@ -90,6 +92,8 @@
 /* FW read command, 0x53 0x?? 0x0, 0x01 */
 #define E_ELAN_INFO_FW_VER	0x00
 #define E_ELAN_INFO_BC_VER	0x10
+#define E_ELAN_INFO_X_RES	0x60
+#define E_ELAN_INFO_Y_RES	0x63
 #define E_ELAN_INFO_REK		0xD0
 #define E_ELAN_INFO_TEST_VER	0xE0
 #define E_ELAN_INFO_FW_ID	0xF0
@@ -112,6 +116,11 @@
 #define ELAN_POWERON_DELAY_USEC	500
 #define ELAN_RESET_DELAY_MSEC	20
 
+enum elants_chip_id {
+	EKTH3500,
+	EKTF3624,
+};
+
 enum elants_state {
 	ELAN_STATE_NORMAL,
 	ELAN_WAIT_QUEUE_HEADER,
@@ -143,9 +152,12 @@ struct elants_data {
 	unsigned int y_res;
 	unsigned int x_max;
 	unsigned int y_max;
+	unsigned int phy_x;
+	unsigned int phy_y;
 	struct touchscreen_properties prop;
 
 	enum elants_state state;
+	enum elants_chip_id chip_id;
 	enum elants_iap_mode iap_mode;
 
 	/* Guards against concurrent access to the device via sysfs */
@@ -433,7 +445,51 @@ static int elants_i2c_query_bc_version(struct elants_data *ts)
 	return 0;
 }
 
-static int elants_i2c_query_ts_info(struct elants_data *ts)
+static int elants_i2c_query_ts_info_ektf(struct elants_data *ts)
+{
+	struct i2c_client *client = ts->client;
+	int error;
+	u8 resp[4];
+	u16 phy_x, phy_y;
+	const u8 get_xres_cmd[] = {
+		CMD_HEADER_READ, E_ELAN_INFO_X_RES, 0x00, 0x00
+	};
+	const u8 get_yres_cmd[] = {
+		CMD_HEADER_READ, E_ELAN_INFO_Y_RES, 0x00, 0x00
+	};
+
+	/* Get X/Y size in mm */
+	error = elants_i2c_execute_command(client, get_xres_cmd,
+					   sizeof(get_xres_cmd),
+					   resp, sizeof(resp), 1,
+					   "get X size");
+	if (error)
+		return error;
+
+	phy_x = resp[2] | ((resp[3] & 0xF0) << 4);
+
+	error = elants_i2c_execute_command(client, get_yres_cmd,
+					   sizeof(get_yres_cmd),
+					   resp, sizeof(resp), 1,
+					   "get Y size");
+	if (error)
+		return error;
+
+	phy_y = resp[2] | ((resp[3] & 0xF0) << 4);
+
+	dev_dbg(&client->dev, "phy_x=%d, phy_y=%d\n", phy_x, phy_y);
+
+	ts->phy_x = phy_x;
+	ts->phy_y = phy_y;
+
+	/* eKTF doesn't report max size, set it to default values */
+	ts->x_max = 2240 - 1;
+	ts->y_max = 1408 - 1;
+
+	return 0;
+}
+
+static int elants_i2c_query_ts_info_ekth(struct elants_data *ts)
 {
 	struct i2c_client *client = ts->client;
 	int error;
@@ -508,6 +564,8 @@ static int elants_i2c_query_ts_info(struct elants_data *ts)
 		ts->x_res = DIV_ROUND_CLOSEST(ts->x_max, phy_x);
 		ts->y_max = ELAN_TS_RESOLUTION(cols, osr);
 		ts->y_res = DIV_ROUND_CLOSEST(ts->y_max, phy_y);
+		ts->phy_x = phy_x;
+		ts->phy_y = phy_y;
 	}
 
 	return 0;
@@ -587,8 +645,19 @@ static int elants_i2c_initialize(struct elants_data *ts)
 		error = elants_i2c_query_fw_version(ts);
 	if (!error)
 		error = elants_i2c_query_test_version(ts);
+
+	switch (ts->chip_id) {
+	case EKTH3500:
+		if (!error)
+			error = elants_i2c_query_ts_info_ekth(ts);
+		break;
+	case EKTF3624:
 		if (!error)
-		error = elants_i2c_query_ts_info(ts);
+			error = elants_i2c_query_ts_info_ektf(ts);
+		break;
+	default:
+		BUG();
+	}
 
 	if (error)
 		ts->iap_mode = ELAN_IAP_RECOVERY;
@@ -853,7 +922,8 @@ static int elants_i2c_fw_update(struct elants_data *ts)
  * Event reporting.
  */
 
-static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf)
+static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf,
+				size_t packet_size)
 {
 	struct input_dev *input = ts->input;
 	unsigned int n_fingers;
@@ -880,8 +950,24 @@ static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf)
 			pos = &buf[FW_POS_XY + i * 3];
 			x = (((u16)pos[0] & 0xf0) << 4) | pos[1];
 			y = (((u16)pos[0] & 0x0f) << 8) | pos[2];
+
+			/*
+			 * eKTF3624 may have use "old" touch-report format,
+			 * depending on a device and TS firmware version.
+			 * For example, ASUS Transformer devices use the "old"
+			 * format, while ASUS Nexus 7 uses the "new" formant.
+			 */
+			if (packet_size == PACKET_SIZE_OLD &&
+			    ts->chip_id == EKTF3624) {
+				w = buf[FW_POS_WIDTH + i / 2];
+				w >>= 4 * (~i & 1);
+				w |= w << 4;
+				w |= !w;
+				p = w;
+			} else {
 				p = buf[FW_POS_PRESSURE + i];
 				w = buf[FW_POS_WIDTH + i];
+			}
 
 			dev_dbg(&ts->client->dev, "i=%d x=%d y=%d p=%d w=%d\n",
 				i, x, y, p, w);
@@ -913,7 +999,8 @@ static u8 elants_i2c_calculate_checksum(u8 *buf)
 	return checksum;
 }
 
-static void elants_i2c_event(struct elants_data *ts, u8 *buf)
+static void elants_i2c_event(struct elants_data *ts, u8 *buf,
+			     size_t packet_size)
 {
 	u8 checksum = elants_i2c_calculate_checksum(buf);
 
@@ -927,7 +1014,7 @@ static void elants_i2c_event(struct elants_data *ts, u8 *buf)
 			 "%s: unknown packet type: %02x\n",
 			 __func__, buf[FW_POS_HEADER]);
 	else
-		elants_i2c_mt_event(ts, buf);
+		elants_i2c_mt_event(ts, buf, packet_size);
 }
 
 static irqreturn_t elants_i2c_irq(int irq, void *_dev)
@@ -970,7 +1057,6 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
 		switch (ts->buf[FW_HDR_TYPE]) {
 		case CMD_HEADER_HELLO:
 		case CMD_HEADER_RESP:
-		case CMD_HEADER_REK:
 			break;
 
 		case QUEUE_HEADER_WAIT:
@@ -985,9 +1071,24 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
 			break;
 
 		case QUEUE_HEADER_SINGLE:
-			elants_i2c_event(ts, &ts->buf[HEADER_SIZE]);
+			elants_i2c_event(ts, &ts->buf[HEADER_SIZE],
+					 ts->buf[FW_HDR_LENGTH]);
 			break;
 
+		case QUEUE_HEADER_NORMAL2: /* CMD_HEADER_REK */
+			/*
+			 * Depending on firmware version, eKTF3624 touchscreens
+			 * may utilize one of these opcodes for the touch events:
+			 * 0x63 (NORMAL) and 0x66 (NORMAL2).  The 0x63 is used by
+			 * older firmware version and differs from 0x66 such that
+			 * touch pressure value needs to be adjusted.  The 0x66
+			 * opcode of newer firmware is equal to 0x63 of eKTH3500.
+			 */
+			if (ts->chip_id != EKTF3624)
+				break;
+
+			fallthrough;
+
 		case QUEUE_HEADER_NORMAL:
 			report_count = ts->buf[FW_HDR_COUNT];
 			if (report_count == 0 || report_count > 3) {
@@ -998,7 +1099,12 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
 			}
 
 			report_len = ts->buf[FW_HDR_LENGTH] / report_count;
-			if (report_len != PACKET_SIZE) {
+
+			if (report_len == PACKET_SIZE_OLD &&
+			    ts->chip_id == EKTF3624) {
+				dev_dbg_once(&client->dev,
+					     "using old report format\n");
+			} else if (report_len != PACKET_SIZE) {
 				dev_err(&client->dev,
 					"mismatching report length: %*ph\n",
 					HEADER_SIZE, ts->buf);
@@ -1007,8 +1113,8 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
 
 			for (i = 0; i < report_count; i++) {
 				u8 *buf = ts->buf + HEADER_SIZE +
-							i * PACKET_SIZE;
-				elants_i2c_event(ts, buf);
+							i * report_len;
+				elants_i2c_event(ts, buf, report_len);
 			}
 			break;
 
@@ -1250,6 +1356,7 @@ static int elants_i2c_probe(struct i2c_client *client,
 	init_completion(&ts->cmd_done);
 
 	ts->client = client;
+	ts->chip_id = (enum elants_chip_id)id->driver_data;
 	i2c_set_clientdata(client, ts);
 
 	ts->vcc33 = devm_regulator_get(&client->dev, "vcc33");
@@ -1331,13 +1438,20 @@ static int elants_i2c_probe(struct i2c_client *client,
 	input_set_abs_params(ts->input, ABS_MT_PRESSURE, 0, 255, 0, 0);
 	input_set_abs_params(ts->input, ABS_MT_TOOL_TYPE,
 			     0, MT_TOOL_PALM, 0, 0);
+
+	touchscreen_parse_properties(ts->input, true, &ts->prop);
+
+	if (ts->chip_id == EKTF3624) {
+		/* calculate resolution from size */
+		ts->x_res = DIV_ROUND_CLOSEST(ts->prop.max_x, ts->phy_x);
+		ts->y_res = DIV_ROUND_CLOSEST(ts->prop.max_y, ts->phy_y);
+	}
+
 	input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res);
 	input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res);
 	if (ts->major_res > 0)
 		input_abs_set_res(ts->input, ABS_MT_TOUCH_MAJOR, ts->major_res);
 
-	touchscreen_parse_properties(ts->input, true, &ts->prop);
-
 	error = input_mt_init_slots(ts->input, MAX_CONTACT_NUM,
 				    INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
 	if (error) {
@@ -1466,14 +1580,16 @@ static SIMPLE_DEV_PM_OPS(elants_i2c_pm_ops,
 			 elants_i2c_suspend, elants_i2c_resume);
 
 static const struct i2c_device_id elants_i2c_id[] = {
-	{ DEVICE_NAME, 0 },
+	{ DEVICE_NAME, EKTH3500 },
+	{ "ekth3500", EKTH3500 },
+	{ "ektf3624", EKTF3624 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, elants_i2c_id);
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id elants_acpi_id[] = {
-	{ "ELAN0001", 0 },
+	{ "ELAN0001", EKTH3500 },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, elants_acpi_id);
@@ -1482,6 +1598,7 @@ MODULE_DEVICE_TABLE(acpi, elants_acpi_id);
 #ifdef CONFIG_OF
 static const struct of_device_id elants_of_match[] = {
 	{ .compatible = "elan,ekth3500" },
+	{ .compatible = "elan,ektf3624" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, elants_of_match);

drivers/input/touchscreen/elo.c

@@ -341,8 +341,10 @@ static int elo_connect(struct serio *serio, struct serio_driver *drv)
 	switch (elo->id) {
 
 	case 0: /* 10-byte protocol */
-		if (elo_setup_10(elo))
+		if (elo_setup_10(elo)) {
+			err = -EIO;
 			goto fail3;
+		}
 
 		break;
 

drivers/input/touchscreen/melfas_mip4.c

@@ -465,13 +465,13 @@ static void mip4_report_keys(struct mip4_ts *ts, u8 *packet)
 static void mip4_report_touch(struct mip4_ts *ts, u8 *packet)
 {
 	int id;
-	bool hover;
-	bool palm;
+	bool __always_unused hover;
+	bool __always_unused palm;
 	bool state;
 	u16 x, y;
-	u8 pressure_stage = 0;
+	u8 __always_unused pressure_stage = 0;
 	u8 pressure;
-	u8 size;
+	u8 __always_unused size;
 	u8 touch_major;
 	u8 touch_minor;
 

drivers/input/touchscreen/raydium_i2c_ts.c

@@ -445,6 +445,7 @@ static int raydium_i2c_write_object(struct i2c_client *client,
 				    enum raydium_bl_ack state)
 {
 	int error;
+	static const u8 cmd[] = { 0xFF, 0x39 };
 
 	error = raydium_i2c_send(client, RM_CMD_BOOT_WRT, data, len);
 	if (error) {
@@ -453,7 +454,7 @@ static int raydium_i2c_write_object(struct i2c_client *client,
 		return error;
 	}
 
-	error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, NULL, 0);
+	error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, cmd, sizeof(cmd));
 	if (error) {
 		dev_err(&client->dev, "Ack obj command failed: %d\n", error);
 		return error;

drivers/input/touchscreen/st1232.c

@@ -94,8 +94,13 @@ static int st1232_ts_wait_ready(struct st1232_ts_data *ts)
 
 	for (retries = 10; retries; retries--) {
 		error = st1232_ts_read_data(ts, REG_STATUS, 1);
-		if (!error && ts->read_buf[0] == (STATUS_NORMAL | ERROR_NONE))
+		if (!error) {
+			switch (ts->read_buf[0]) {
+			case STATUS_NORMAL | ERROR_NONE:
+			case STATUS_IDLE | ERROR_NONE:
 				return 0;
+			}
+		}
 
 		usleep_range(1000, 2000);
 	}

drivers/input/touchscreen/stmpe-ts.c

@@ -52,6 +52,7 @@
  * @idev: registered input device
  * @work: a work item used to scan the device
  * @dev: a pointer back to the MFD cell struct device*
+ * @prop: Touchscreen properties
  * @ave_ctrl: Sample average control
  * (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples)
  * @touch_det_delay: Touch detect interrupt delay

drivers/input/touchscreen/sur40.c

@@ -787,6 +787,7 @@ static int sur40_probe(struct usb_interface *interface,
 		dev_err(&interface->dev,
 			"Unable to register video controls.");
 		v4l2_ctrl_handler_free(&sur40->hdl);
+		error = sur40->hdl.error;
 		goto err_unreg_v4l2;
 	}
 

drivers/input/touchscreen/surface3_spi.c

@@ -94,9 +94,7 @@ static void surface3_spi_report_touch(struct surface3_ts_data *ts_data,
 
 static void surface3_spi_process_touch(struct surface3_ts_data *ts_data, u8 *data)
 {
-	u16 timestamp;
 	unsigned int i;
-	timestamp = get_unaligned_le16(&data[15]);
 
 	for (i = 0; i < 13; i++) {
 		struct surface3_ts_data_finger *finger;

drivers/input/touchscreen/usbtouchscreen.c

@@ -1044,6 +1044,7 @@ static void nexio_exit(struct usbtouch_usb *usbtouch)
 
 static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
 {
+	struct device *dev = &usbtouch->interface->dev;
 	struct nexio_touch_packet *packet = (void *) pkt;
 	struct nexio_priv *priv = usbtouch->priv;
 	unsigned int data_len = be16_to_cpu(packet->data_len);
@@ -1062,6 +1063,8 @@ static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
 
 	/* send ACK */
 	ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
+	if (ret)
+		dev_warn(dev, "Failed to submit ACK URB: %d\n", ret);
 
 	if (!usbtouch->type->max_xc) {
 		usbtouch->type->max_xc = 2 * x_len;

drivers/input/touchscreen/zinitix.c

@@ -161,7 +161,7 @@ static int zinitix_read_data(struct i2c_client *client,
 
 	ret = i2c_master_recv(client, (u8 *)values, length);
 	if (ret != length)
-		return ret < 0 ? ret : -EIO; ;
+		return ret < 0 ? ret : -EIO;
 
 	return 0;
 }
@@ -190,7 +190,7 @@ static int zinitix_write_cmd(struct i2c_client *client, u16 reg)
 	return 0;
 }
 
-static bool zinitix_init_touch(struct bt541_ts_data *bt541)
+static int zinitix_init_touch(struct bt541_ts_data *bt541)
 {
 	struct i2c_client *client = bt541->client;
 	int i;

include/dt-bindings/input/cros-ec-keyboard.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides the constants of the standard Chrome OS key matrix
+ * for cros-ec keyboard-controller bindings.
+ *
+ * Copyright (c) 2021 Google, Inc
+ */
+
+#ifndef _CROS_EC_KEYBOARD_H
+#define _CROS_EC_KEYBOARD_H
+
+#define CROS_STD_TOP_ROW_KEYMAP	\
+	MATRIX_KEY(0x00, 0x02, KEY_F1)	\
+	MATRIX_KEY(0x03, 0x02, KEY_F2)	\
+	MATRIX_KEY(0x02, 0x02, KEY_F3)	\
+	MATRIX_KEY(0x01, 0x02, KEY_F4)	\
+	MATRIX_KEY(0x03, 0x04, KEY_F5)	\
+	MATRIX_KEY(0x02, 0x04, KEY_F6)	\
+	MATRIX_KEY(0x01, 0x04, KEY_F7)	\
+	MATRIX_KEY(0x02, 0x09, KEY_F8)	\
+	MATRIX_KEY(0x01, 0x09, KEY_F9)	\
+	MATRIX_KEY(0x00, 0x04, KEY_F10)
+
+#define CROS_STD_MAIN_KEYMAP	\
+	MATRIX_KEY(0x00, 0x01, KEY_LEFTMETA)	\
+	MATRIX_KEY(0x00, 0x03, KEY_B)		\
+	MATRIX_KEY(0x00, 0x05, KEY_RO)		\
+	MATRIX_KEY(0x00, 0x06, KEY_N)		\
+	MATRIX_KEY(0x00, 0x08, KEY_EQUAL)	\
+	MATRIX_KEY(0x00, 0x0a, KEY_RIGHTALT)	\
+	MATRIX_KEY(0x01, 0x01, KEY_ESC)		\
+	MATRIX_KEY(0x01, 0x03, KEY_G)		\
+	MATRIX_KEY(0x01, 0x06, KEY_H)		\
+	MATRIX_KEY(0x01, 0x08, KEY_APOSTROPHE)	\
+	MATRIX_KEY(0x01, 0x0b, KEY_BACKSPACE)	\
+	MATRIX_KEY(0x01, 0x0c, KEY_HENKAN)	\
+						\
+	MATRIX_KEY(0x02, 0x00, KEY_LEFTCTRL)	\
+	MATRIX_KEY(0x02, 0x01, KEY_TAB)		\
+	MATRIX_KEY(0x02, 0x03, KEY_T)		\
+	MATRIX_KEY(0x02, 0x05, KEY_RIGHTBRACE)	\
+	MATRIX_KEY(0x02, 0x06, KEY_Y)		\
+	MATRIX_KEY(0x02, 0x07, KEY_102ND)	\
+	MATRIX_KEY(0x02, 0x08, KEY_LEFTBRACE)	\
+	MATRIX_KEY(0x02, 0x0a, KEY_YEN)		\
+						\
+	MATRIX_KEY(0x03, 0x00, KEY_LEFTMETA)	\
+	MATRIX_KEY(0x03, 0x01, KEY_GRAVE)	\
+	MATRIX_KEY(0x03, 0x03, KEY_5)		\
+	MATRIX_KEY(0x03, 0x06, KEY_6)		\
+	MATRIX_KEY(0x03, 0x08, KEY_MINUS)	\
+	MATRIX_KEY(0x03, 0x09, KEY_SLEEP)	\
+	MATRIX_KEY(0x03, 0x0b, KEY_BACKSLASH)	\
+	MATRIX_KEY(0x03, 0x0c, KEY_MUHENKAN)	\
+						\
+	MATRIX_KEY(0x04, 0x00, KEY_RIGHTCTRL)	\
+	MATRIX_KEY(0x04, 0x01, KEY_A)		\
+	MATRIX_KEY(0x04, 0x02, KEY_D)		\
+	MATRIX_KEY(0x04, 0x03, KEY_F)		\
+	MATRIX_KEY(0x04, 0x04, KEY_S)		\
+	MATRIX_KEY(0x04, 0x05, KEY_K)		\
+	MATRIX_KEY(0x04, 0x06, KEY_J)		\
+	MATRIX_KEY(0x04, 0x08, KEY_SEMICOLON)	\
+	MATRIX_KEY(0x04, 0x09, KEY_L)		\
+	MATRIX_KEY(0x04, 0x0a, KEY_BACKSLASH)	\
+	MATRIX_KEY(0x04, 0x0b, KEY_ENTER)	\
+						\
+	MATRIX_KEY(0x05, 0x01, KEY_Z)		\
+	MATRIX_KEY(0x05, 0x02, KEY_C)		\
+	MATRIX_KEY(0x05, 0x03, KEY_V)		\
+	MATRIX_KEY(0x05, 0x04, KEY_X)		\
+	MATRIX_KEY(0x05, 0x05, KEY_COMMA)	\
+	MATRIX_KEY(0x05, 0x06, KEY_M)		\
+	MATRIX_KEY(0x05, 0x07, KEY_LEFTSHIFT)	\
+	MATRIX_KEY(0x05, 0x08, KEY_SLASH)	\
+	MATRIX_KEY(0x05, 0x09, KEY_DOT)		\
+	MATRIX_KEY(0x05, 0x0b, KEY_SPACE)	\
+						\
+	MATRIX_KEY(0x06, 0x01, KEY_1)		\
+	MATRIX_KEY(0x06, 0x02, KEY_3)		\
+	MATRIX_KEY(0x06, 0x03, KEY_4)		\
+	MATRIX_KEY(0x06, 0x04, KEY_2)		\
+	MATRIX_KEY(0x06, 0x05, KEY_8)		\
+	MATRIX_KEY(0x06, 0x06, KEY_7)		\
+	MATRIX_KEY(0x06, 0x08, KEY_0)		\
+	MATRIX_KEY(0x06, 0x09, KEY_9)		\
+	MATRIX_KEY(0x06, 0x0a, KEY_LEFTALT)	\
+	MATRIX_KEY(0x06, 0x0b, KEY_DOWN)	\
+	MATRIX_KEY(0x06, 0x0c, KEY_RIGHT)	\
+						\
+	MATRIX_KEY(0x07, 0x01, KEY_Q)		\
+	MATRIX_KEY(0x07, 0x02, KEY_E)		\
+	MATRIX_KEY(0x07, 0x03, KEY_R)		\
+	MATRIX_KEY(0x07, 0x04, KEY_W)		\
+	MATRIX_KEY(0x07, 0x05, KEY_I)		\
+	MATRIX_KEY(0x07, 0x06, KEY_U)		\
+	MATRIX_KEY(0x07, 0x07, KEY_RIGHTSHIFT)	\
+	MATRIX_KEY(0x07, 0x08, KEY_P)		\
+	MATRIX_KEY(0x07, 0x09, KEY_O)		\
+	MATRIX_KEY(0x07, 0x0b, KEY_UP)		\
+	MATRIX_KEY(0x07, 0x0c, KEY_LEFT)
+
+#endif /* _CROS_EC_KEYBOARD_H */