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

Pull input updates from Dmitry Torokhov:
 "Assorted fixes and cleanups to the existing drivers plus a new driver
  for IMS Passenger Control Unit device they use for ther in-flight
  entertainment system."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (44 commits)
  Input: trackpoint - Optimize trackpoint init to use power-on reset
  Input: apbps2 - convert to devm_ioremap_resource()
  Input: ALPS - use %ph to print buffers
  ARM - shmobile: Armadillo800EVA: Move st1232 reset pin handling
  Input: st1232 - add reset pin handling
  Input: st1232 - convert to devm_* infrastructure
  Input: MT - handle semi-mt devices in core
  Input: adxl34x - use spi_get_drvdata()
  Input: ad7877 - use spi_get_drvdata() and spi_set_drvdata()
  Input: ads7846 - use spi_get_drvdata() and spi_set_drvdata()
  Input: ims-pcu - fix a memory leak on error
  Input: sysrq - supplement reset sequence with timeout functionality
  Input: tegra-kbc - support for defining row/columns based on SoC
  Input: imx_keypad - switch to using managed resources
  Input: arc_ps2 - add support for device tree
  Input: mma8450 - fix signed 12bits to 32bits conversion
  Input: eeti_ts - remove redundant null check
  Input: edt-ft5x06 - remove redundant null check before kfree
  Input: ad714x - add CONFIG_PM_SLEEP to suspend/resume functions
  Input: adxl34x - add CONFIG_PM_SLEEP to suspend/resume functions
  ...

Documentation/devicetree/bindings/input/ps2keyb-mouse-apbps2.txt

+Aeroflex Gaisler APBPS2 PS/2 Core, supporting Keyboard or Mouse.
+
+The APBPS2 PS/2 core is available in the GRLIB VHDL IP core library.
+
+Note: In the ordinary environment for the APBPS2 core, a LEON SPARC system,
+these properties are built from information in the AMBA plug&play and from
+bootloader settings.
+
+Required properties:
+
+- name : Should be "GAISLER_APBPS2" or "01_060"
+- reg : Address and length of the register set for the device
+- interrupts : Interrupt numbers for this device
+
+For further information look in the documentation for the GLIB IP core library:
+http://www.gaisler.com/products/grlib/grip.pdf

Documentation/devicetree/bindings/input/touchscreen/auo_pixcir_ts.txt

+* AUO in-cell touchscreen controller using Pixcir sensors
+
+Required properties:
+- compatible: must be "auo,auo_pixcir_ts"
+- reg: I2C address of the chip
+- interrupts: interrupt to which the chip is connected
+- gpios: gpios the chip is connected to
+  first one is the interrupt gpio and second one the reset gpio
+- x-size: horizontal resolution of touchscreen
+- y-size: vertical resolution of touchscreen
+
+Example:
+
+	i2c@00000000 {
+		/* ... */
+
+		auo_pixcir_ts@5c {
+			compatible = "auo,auo_pixcir_ts";
+			reg = <0x5c>;
+			interrupts = <2 0>;
+
+			gpios = <&gpf 2 0 2>, /* INT */
+				<&gpf 5 1 0>; /* RST */
+
+			x-size = <800>;
+			y-size = <600>;
+		};
+
+		/* ... */
+	};

Documentation/devicetree/bindings/input/touchscreen/sitronix-st1232.txt

+* Sitronix st1232 touchscreen controller
+
+Required properties:
+- compatible: must be "sitronix,st1232"
+- reg: I2C address of the chip
+- interrupts: interrupt to which the chip is connected
+
+Optional properties:
+- gpios: a phandle to the reset GPIO
+
+Example:
+
+	i2c@00000000 {
+		/* ... */
+
+		touchscreen@55 {
+			compatible = "sitronix,st1232";
+			reg = <0x55>;
+			interrupts = <2 0>;
+			gpios = <&gpio1 166 0>;
+		};
+
+		/* ... */
+	};

Documentation/devicetree/bindings/serio/snps-arc_ps2.txt

+* ARC PS/2 driver: PS/2 block used in some ARC FPGA's & nSIM OSCI model
+
+Required properties:
+- compatible		: "snps,arc_ps2"
+- reg			: offset and length (always 0x14) of registers
+- interrupts		: interrupt
+- interrupt-names	: name of interrupt, must be "arc_ps2_irq"
+
+Example:
+
+serio@c9000400 {
+	compatible = "snps,arc_ps2";
+	reg = <0xc9000400 0x14>;
+	interrupts = <13>;
+	interrupt-names = "arc_ps2_irq";
+}

arch/arm/mach-shmobile/board-armadillo800eva.c

@@ -24,6 +24,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/input.h>
+#include <linux/platform_data/st1232_pdata.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
@@ -882,10 +883,15 @@ static struct platform_device i2c_gpio_device = {
 };
 
 /* I2C */
+static struct st1232_pdata st1232_i2c0_pdata = {
+	.reset_gpio = 166,
+};
+
 static struct i2c_board_info i2c0_devices[] = {
 	{
 		I2C_BOARD_INFO("st1232-ts", 0x55),
 		.irq = evt2irq(0x0340),
+		.platform_data = &st1232_i2c0_pdata,
 	},
 	{
 		I2C_BOARD_INFO("wm8978", 0x1a),
@@ -1009,7 +1015,6 @@ static void __init eva_init(void)
 
 	/* Touchscreen */
 	gpio_request(GPIO_FN_IRQ10,	NULL); /* TP_INT */
-	gpio_request_one(GPIO_PORT166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */
 
 	/* GETHER */
 	gpio_request(GPIO_FN_ET_CRS,		NULL);

drivers/base/devres.c

@@ -670,6 +670,80 @@ int devres_release_group(struct device *dev, void *id)
 }
 EXPORT_SYMBOL_GPL(devres_release_group);
 
+/*
+ * Custom devres actions allow inserting a simple function call
+ * into the teadown sequence.
+ */
+
+struct action_devres {
+	void *data;
+	void (*action)(void *);
+};
+
+static int devm_action_match(struct device *dev, void *res, void *p)
+{
+	struct action_devres *devres = res;
+	struct action_devres *target = p;
+
+	return devres->action == target->action &&
+	       devres->data == target->data;
+}
+
+static void devm_action_release(struct device *dev, void *res)
+{
+	struct action_devres *devres = res;
+
+	devres->action(devres->data);
+}
+
+/**
+ * devm_add_action() - add a custom action to list of managed resources
+ * @dev: Device that owns the action
+ * @action: Function that should be called
+ * @data: Pointer to data passed to @action implementation
+ *
+ * This adds a custom action to the list of managed resources so that
+ * it gets executed as part of standard resource unwinding.
+ */
+int devm_add_action(struct device *dev, void (*action)(void *), void *data)
+{
+	struct action_devres *devres;
+
+	devres = devres_alloc(devm_action_release,
+			      sizeof(struct action_devres), GFP_KERNEL);
+	if (!devres)
+		return -ENOMEM;
+
+	devres->data = data;
+	devres->action = action;
+
+	devres_add(dev, devres);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_add_action);
+
+/**
+ * devm_remove_action() - removes previously added custom action
+ * @dev: Device that owns the action
+ * @action: Function implementing the action
+ * @data: Pointer to data passed to @action implementation
+ *
+ * Removes instance of @action previously added by devm_add_action().
+ * Both action and data should match one of the existing entries.
+ */
+void devm_remove_action(struct device *dev, void (*action)(void *), void *data)
+{
+	struct action_devres devres = {
+		.data = data,
+		.action = action,
+	};
+
+	WARN_ON(devres_destroy(dev, devm_action_release, devm_action_match,
+			       &devres));
+
+}
+EXPORT_SYMBOL_GPL(devm_remove_action);
+
 /*
  * Managed kzalloc/kfree
  */

drivers/input/input-mt.c

@@ -79,6 +79,8 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots,
 	}
 	if (flags & INPUT_MT_DIRECT)
 		__set_bit(INPUT_PROP_DIRECT, dev->propbit);
+	if (flags & INPUT_MT_SEMI_MT)
+		__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
 	if (flags & INPUT_MT_TRACK) {
 		unsigned int n2 = num_slots * num_slots;
 		mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL);
@@ -246,6 +248,7 @@ void input_mt_sync_frame(struct input_dev *dev)
 {
 	struct input_mt *mt = dev->mt;
 	struct input_mt_slot *s;
+	bool use_count = false;
 
 	if (!mt)
 		return;
@@ -259,7 +262,10 @@ void input_mt_sync_frame(struct input_dev *dev)
 		}
 	}
 
-	input_mt_report_pointer_emulation(dev, (mt->flags & INPUT_MT_POINTER));
+	if ((mt->flags & INPUT_MT_POINTER) && !(mt->flags & INPUT_MT_SEMI_MT))
+		use_count = true;
+
+	input_mt_report_pointer_emulation(dev, use_count);
 
 	mt->frame++;
 }

drivers/input/keyboard/amikbd.c

@@ -260,18 +260,6 @@ static struct platform_driver amikbd_driver = {
 	},
 };
 
-static int __init amikbd_init(void)
-{
-	return platform_driver_probe(&amikbd_driver, amikbd_probe);
-}
-
-module_init(amikbd_init);
-
-static void __exit amikbd_exit(void)
-{
-	platform_driver_unregister(&amikbd_driver);
-}
-
-module_exit(amikbd_exit);
+module_platform_driver_probe(amikbd_driver, amikbd_probe);
 
 MODULE_ALIAS("platform:amiga-keyboard");

drivers/input/keyboard/davinci_keyscan.c

@@ -329,17 +329,7 @@ static struct platform_driver davinci_ks_driver = {
 	.remove	= davinci_ks_remove,
 };
 
-static int __init davinci_ks_init(void)
-{
-	return platform_driver_probe(&davinci_ks_driver, davinci_ks_probe);
-}
-module_init(davinci_ks_init);
-
-static void __exit davinci_ks_exit(void)
-{
-	platform_driver_unregister(&davinci_ks_driver);
-}
-module_exit(davinci_ks_exit);
+module_platform_driver_probe(davinci_ks_driver, davinci_ks_probe);
 
 MODULE_AUTHOR("Miguel Aguilar");
 MODULE_DESCRIPTION("Texas Instruments DaVinci Key Scan Driver");

drivers/input/keyboard/imx_keypad.c

@@ -448,24 +448,17 @@ static int imx_keypad_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	res = request_mem_region(res->start, resource_size(res), pdev->name);
-	if (res == NULL) {
-		dev_err(&pdev->dev, "failed to request I/O memory\n");
-		return -EBUSY;
-	}
-
-	input_dev = input_allocate_device();
+	input_dev = devm_input_allocate_device(&pdev->dev);
 	if (!input_dev) {
 		dev_err(&pdev->dev, "failed to allocate the input device\n");
-		error = -ENOMEM;
-		goto failed_rel_mem;
+		return -ENOMEM;
 	}
 
-	keypad = kzalloc(sizeof(struct imx_keypad), GFP_KERNEL);
+	keypad = devm_kzalloc(&pdev->dev, sizeof(struct imx_keypad),
+			     GFP_KERNEL);
 	if (!keypad) {
 		dev_err(&pdev->dev, "not enough memory for driver data\n");
-		error = -ENOMEM;
-		goto failed_free_input;
+		return -ENOMEM;
 	}
 
 	keypad->input_dev = input_dev;
@@ -475,18 +468,14 @@ static int imx_keypad_probe(struct platform_device *pdev)
 	setup_timer(&keypad->check_matrix_timer,
 		    imx_keypad_check_for_events, (unsigned long) keypad);
 
-	keypad->mmio_base = ioremap(res->start, resource_size(res));
-	if (keypad->mmio_base == NULL) {
-		dev_err(&pdev->dev, "failed to remap I/O memory\n");
-		error = -ENOMEM;
-		goto failed_free_priv;
-	}
+	keypad->mmio_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(keypad->mmio_base))
+		return PTR_ERR(keypad->mmio_base);
 
-	keypad->clk = clk_get(&pdev->dev, NULL);
+	keypad->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(keypad->clk)) {
 		dev_err(&pdev->dev, "failed to get keypad clock\n");
-		error = PTR_ERR(keypad->clk);
-		goto failed_unmap;
+		return PTR_ERR(keypad->clk);
 	}
 
 	/* Init the Input device */
@@ -502,7 +491,7 @@ static int imx_keypad_probe(struct platform_device *pdev)
 					   keypad->keycodes, input_dev);
 	if (error) {
 		dev_err(&pdev->dev, "failed to build keymap\n");
-		goto failed_clock_put;
+		return error;
 	}
 
 	/* Search for rows and cols enabled */
@@ -527,60 +516,23 @@ static int imx_keypad_probe(struct platform_device *pdev)
 	imx_keypad_inhibit(keypad);
 	clk_disable_unprepare(keypad->clk);
 
-	error = request_irq(irq, imx_keypad_irq_handler, 0,
+	error = devm_request_irq(&pdev->dev, irq, imx_keypad_irq_handler, 0,
 			    pdev->name, keypad);
 	if (error) {
 		dev_err(&pdev->dev, "failed to request IRQ\n");
-		goto failed_clock_put;
+		return error;
 	}
 
 	/* Register the input device */
 	error = input_register_device(input_dev);
 	if (error) {
 		dev_err(&pdev->dev, "failed to register input device\n");
-		goto failed_free_irq;
+		return error;
 	}
 
 	platform_set_drvdata(pdev, keypad);
 	device_init_wakeup(&pdev->dev, 1);
 
-	return 0;
-
-failed_free_irq:
-	free_irq(irq, pdev);
-failed_clock_put:
-	clk_put(keypad->clk);
-failed_unmap:
-	iounmap(keypad->mmio_base);
-failed_free_priv:
-	kfree(keypad);
-failed_free_input:
-	input_free_device(input_dev);
-failed_rel_mem:
-	release_mem_region(res->start, resource_size(res));
-	return error;
-}
-
-static int imx_keypad_remove(struct platform_device *pdev)
-{
-	struct imx_keypad *keypad = platform_get_drvdata(pdev);
-	struct resource *res;
-
-	dev_dbg(&pdev->dev, ">%s\n", __func__);
-
-	platform_set_drvdata(pdev, NULL);
-
-	input_unregister_device(keypad->input_dev);
-
-	free_irq(keypad->irq, keypad);
-	clk_put(keypad->clk);
-
-	iounmap(keypad->mmio_base);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, resource_size(res));
-
-	kfree(keypad);
-
 	return 0;
 }
 
@@ -640,7 +592,6 @@ static struct platform_driver imx_keypad_driver = {
 		.of_match_table = of_match_ptr(imx_keypad_of_match),
 	},
 	.probe		= imx_keypad_probe,
-	.remove		= imx_keypad_remove,
 };
 module_platform_driver(imx_keypad_driver);
 

drivers/input/keyboard/nomadik-ske-keypad.c

@@ -430,17 +430,7 @@ static struct platform_driver ske_keypad_driver = {
 	.remove = ske_keypad_remove,
 };
 
-static int __init ske_keypad_init(void)
-{
-	return platform_driver_probe(&ske_keypad_driver, ske_keypad_probe);
-}
-module_init(ske_keypad_init);
-
-static void __exit ske_keypad_exit(void)
-{
-	platform_driver_unregister(&ske_keypad_driver);
-}
-module_exit(ske_keypad_exit);
+module_platform_driver_probe(ske_keypad_driver, ske_keypad_probe);
 
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Naveen Kumar <naveen.gaddipati@stericsson.com> / Sundar Iyer <sundar.iyer@stericsson.com>");

drivers/input/keyboard/tegra-kbc.c

@@ -27,17 +27,19 @@
 #include <linux/io.h>
 #include <linux/interrupt.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
 #include <linux/input/matrix_keypad.h>
 #include <linux/clk/tegra.h>
+#include <linux/err.h>
 
-#define KBC_MAX_GPIO	24
 #define KBC_MAX_KPENT	8
 
-#define KBC_MAX_ROW	16
-#define KBC_MAX_COL	8
-#define KBC_MAX_KEY	(KBC_MAX_ROW * KBC_MAX_COL)
+/* Maximum row/column supported by Tegra KBC yet  is 16x8 */
+#define KBC_MAX_GPIO	24
+/* Maximum keys supported by Tegra KBC yet is 16 x 8*/
+#define KBC_MAX_KEY	(16 * 8)
 
 #define KBC_MAX_DEBOUNCE_CNT	0x3ffu
 
@@ -80,6 +82,12 @@ enum tegra_pin_type {
 	PIN_CFG_ROW,
 };
 
+/* Tegra KBC hw support */
+struct tegra_kbc_hw_support {
+	int max_rows;
+	int max_columns;
+};
+
 struct tegra_kbc_pin_cfg {
 	enum tegra_pin_type type;
 	unsigned char num;
@@ -108,6 +116,9 @@ struct tegra_kbc {
 	u32 wakeup_key;
 	struct timer_list timer;
 	struct clk *clk;
+	const struct tegra_kbc_hw_support *hw_support;
+	int max_keys;
+	int num_rows_and_columns;
 };
 
 static void tegra_kbc_report_released_keys(struct input_dev *input,
@@ -204,11 +215,11 @@ static void tegra_kbc_report_keys(struct tegra_kbc *kbc)
 
 	/*
 	 * If the platform uses Fn keymaps, translate keys on a Fn keypress.
-	 * Function keycodes are KBC_MAX_KEY apart from the plain keycodes.
+	 * Function keycodes are max_keys apart from the plain keycodes.
 	 */
 	if (fn_keypress) {
 		for (i = 0; i < num_down; i++) {
-			scancodes[i] += KBC_MAX_KEY;
+			scancodes[i] += kbc->max_keys;
 			keycodes[i] = kbc->keycode[scancodes[i]];
 		}
 	}
@@ -315,7 +326,7 @@ static void tegra_kbc_setup_wakekeys(struct tegra_kbc *kbc, bool filter)
 	/* Either mask all keys or none. */
 	rst_val = (filter && !kbc->wakeup) ? ~0 : 0;
 
-	for (i = 0; i < KBC_MAX_ROW; i++)
+	for (i = 0; i < kbc->hw_support->max_rows; i++)
 		writel(rst_val, kbc->mmio + KBC_ROW0_MASK_0 + i * 4);
 }
 
@@ -452,7 +463,7 @@ static bool tegra_kbc_check_pin_cfg(const struct tegra_kbc *kbc,
 
 		switch (pin_cfg->type) {
 		case PIN_CFG_ROW:
-			if (pin_cfg->num >= KBC_MAX_ROW) {
+			if (pin_cfg->num >= kbc->hw_support->max_rows) {
 				dev_err(kbc->dev,
 					"pin_cfg[%d]: invalid row number %d\n",
 					i, pin_cfg->num);
@@ -462,7 +473,7 @@ static bool tegra_kbc_check_pin_cfg(const struct tegra_kbc *kbc,
 			break;
 
 		case PIN_CFG_COL:
-			if (pin_cfg->num >= KBC_MAX_COL) {
+			if (pin_cfg->num >= kbc->hw_support->max_columns) {
 				dev_err(kbc->dev,
 					"pin_cfg[%d]: invalid column number %d\n",
 					i, pin_cfg->num);
@@ -520,6 +531,18 @@ static int tegra_kbc_parse_dt(struct tegra_kbc *kbc)
 	}
 	num_cols = proplen / sizeof(u32);
 
+	if (num_rows > kbc->hw_support->max_rows) {
+		dev_err(kbc->dev,
+			"Number of rows is more than supported by hardware\n");
+		return -EINVAL;
+	}
+
+	if (num_cols > kbc->hw_support->max_columns) {
+		dev_err(kbc->dev,
+			"Number of cols is more than supported by hardware\n");
+		return -EINVAL;
+	}
+
 	if (!of_get_property(np, "linux,keymap", &proplen)) {
 		dev_err(kbc->dev, "property linux,keymap not found\n");
 		return -ENOENT;
@@ -532,7 +555,7 @@ static int tegra_kbc_parse_dt(struct tegra_kbc *kbc)
 	}
 
 	/* Set all pins as non-configured */
-	for (i = 0; i < KBC_MAX_GPIO; i++)
+	for (i = 0; i < kbc->num_rows_and_columns; i++)
 		kbc->pin_cfg[i].type = PIN_CFG_IGNORE;
 
 	ret = of_property_read_u32_array(np, "nvidia,kbc-row-pins",
@@ -562,6 +585,24 @@ static int tegra_kbc_parse_dt(struct tegra_kbc *kbc)
 	return 0;
 }
 
+static const struct tegra_kbc_hw_support tegra20_kbc_hw_support = {
+	.max_rows	= 16,
+	.max_columns	= 8,
+};
+
+static const struct tegra_kbc_hw_support tegra11_kbc_hw_support = {
+	.max_rows	= 11,
+	.max_columns	= 8,
+};
+
+static const struct of_device_id tegra_kbc_of_match[] = {
+	{ .compatible = "nvidia,tegra114-kbc", .data = &tegra11_kbc_hw_support},
+	{ .compatible = "nvidia,tegra30-kbc", .data = &tegra20_kbc_hw_support},
+	{ .compatible = "nvidia,tegra20-kbc", .data = &tegra20_kbc_hw_support},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, tegra_kbc_of_match);
+
 static int tegra_kbc_probe(struct platform_device *pdev)
 {
 	struct tegra_kbc *kbc;
@@ -570,7 +611,10 @@ static int tegra_kbc_probe(struct platform_device *pdev)
 	int num_rows = 0;
 	unsigned int debounce_cnt;
 	unsigned int scan_time_rows;
-	unsigned int keymap_rows = KBC_MAX_KEY;
+	unsigned int keymap_rows;
+	const struct of_device_id *match;
+
+	match = of_match_device(of_match_ptr(tegra_kbc_of_match), &pdev->dev);
 
 	kbc = devm_kzalloc(&pdev->dev, sizeof(*kbc), GFP_KERNEL);
 	if (!kbc) {
@@ -579,6 +623,12 @@ static int tegra_kbc_probe(struct platform_device *pdev)
 	}
 
 	kbc->dev = &pdev->dev;
+	kbc->hw_support = match->data;
+	kbc->max_keys = kbc->hw_support->max_rows *
+				kbc->hw_support->max_columns;
+	kbc->num_rows_and_columns = kbc->hw_support->max_rows +
+					kbc->hw_support->max_columns;
+	keymap_rows = kbc->max_keys;
 	spin_lock_init(&kbc->lock);
 
 	err = tegra_kbc_parse_dt(kbc);
@@ -608,11 +658,9 @@ static int tegra_kbc_probe(struct platform_device *pdev)
 
 	setup_timer(&kbc->timer, tegra_kbc_keypress_timer, (unsigned long)kbc);
 
-	kbc->mmio = devm_request_and_ioremap(&pdev->dev, res);
-	if (!kbc->mmio) {
-		dev_err(&pdev->dev, "Cannot request memregion/iomap address\n");
-		return -EBUSY;
-	}
+	kbc->mmio = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(kbc->mmio))
+		return PTR_ERR(kbc->mmio);
 
 	kbc->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(kbc->clk)) {
@@ -641,7 +689,8 @@ static int tegra_kbc_probe(struct platform_device *pdev)
 		keymap_rows *= 2;
 
 	err = matrix_keypad_build_keymap(kbc->keymap_data, NULL,
-					 keymap_rows, KBC_MAX_COL,
+					 keymap_rows,
+					 kbc->hw_support->max_columns,
 					 kbc->keycode, kbc->idev);
 	if (err) {
 		dev_err(&pdev->dev, "failed to setup keymap\n");
@@ -767,12 +816,6 @@ static int tegra_kbc_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(tegra_kbc_pm_ops, tegra_kbc_suspend, tegra_kbc_resume);
 
-static const struct of_device_id tegra_kbc_of_match[] = {
-	{ .compatible = "nvidia,tegra20-kbc", },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, tegra_kbc_of_match);
-
 static struct platform_driver tegra_kbc_driver = {
 	.probe		= tegra_kbc_probe,
 	.driver	= {

drivers/input/misc/Kconfig

@@ -590,6 +590,16 @@ config INPUT_ADXL34X_SPI
 	  To compile this driver as a module, choose M here: the
 	  module will be called adxl34x-spi.
 
+config INPUT_IMS_PCU
+	tristate "IMS Passenger Control Unit driver"
+	depends on USB
+	depends on LEDS_CLASS
+	help
+	  Say Y here if you have system with IMS Rave Passenger Control Unit.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ims_pcu.
+
 config INPUT_CMA3000
 	tristate "VTI CMA3000 Tri-axis accelerometer"
 	help

drivers/input/misc/Makefile

@@ -29,6 +29,7 @@ obj-$(CONFIG_INPUT_DM355EVM)		+= dm355evm_keys.o
 obj-$(CONFIG_INPUT_GP2A)		+= gp2ap002a00f.o
 obj-$(CONFIG_INPUT_GPIO_TILT_POLLED)	+= gpio_tilt_polled.o
 obj-$(CONFIG_HP_SDC_RTC)		+= hp_sdc_rtc.o
+obj-$(CONFIG_INPUT_IMS_PCU)		+= ims-pcu.o
 obj-$(CONFIG_INPUT_IXP4XX_BEEPER)	+= ixp4xx-beeper.o
 obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o
 obj-$(CONFIG_INPUT_KXTJ9)		+= kxtj9.o

drivers/input/misc/ad714x-i2c.c

@@ -13,7 +13,7 @@
 #include <linux/pm.h>
 #include "ad714x.h"
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int ad714x_i2c_suspend(struct device *dev)
 {
 	return ad714x_disable(i2c_get_clientdata(to_i2c_client(dev)));

drivers/input/misc/ad714x-spi.c

@@ -16,7 +16,7 @@
 #define AD714x_SPI_CMD_PREFIX      0xE000   /* bits 15:11 */
 #define AD714x_SPI_READ            BIT(10)
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int ad714x_spi_suspend(struct device *dev)
 {
 	return ad714x_disable(spi_get_drvdata(to_spi_device(dev)));

drivers/input/misc/adxl34x-i2c.c

@@ -105,7 +105,7 @@ static int adxl34x_i2c_remove(struct i2c_client *client)
 	return adxl34x_remove(ac);
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int adxl34x_i2c_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);

drivers/input/misc/adxl34x-spi.c

@@ -89,16 +89,16 @@ static int adxl34x_spi_probe(struct spi_device *spi)
 
 static int adxl34x_spi_remove(struct spi_device *spi)
 {
-	struct adxl34x *ac = dev_get_drvdata(&spi->dev);
+	struct adxl34x *ac = spi_get_drvdata(spi);
 
 	return adxl34x_remove(ac);
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int adxl34x_spi_suspend(struct device *dev)
 {
 	struct spi_device *spi = to_spi_device(dev);
-	struct adxl34x *ac = dev_get_drvdata(&spi->dev);
+	struct adxl34x *ac = spi_get_drvdata(spi);
 
 	adxl34x_suspend(ac);
 
@@ -108,7 +108,7 @@ static int adxl34x_spi_suspend(struct device *dev)
 static int adxl34x_spi_resume(struct device *dev)
 {
 	struct spi_device *spi = to_spi_device(dev);
-	struct adxl34x *ac = dev_get_drvdata(&spi->dev);
+	struct adxl34x *ac = spi_get_drvdata(spi);
 
 	adxl34x_resume(ac);
 

drivers/input/misc/mma8450.c

@@ -123,9 +123,9 @@ static void mma8450_poll(struct input_polled_dev *dev)
 	if (ret < 0)
 		return;
 
-	x = ((buf[1] << 4) & 0xff0) | (buf[0] & 0xf);
-	y = ((buf[3] << 4) & 0xff0) | (buf[2] & 0xf);
-	z = ((buf[5] << 4) & 0xff0) | (buf[4] & 0xf);
+	x = ((int)(s8)buf[1] << 4) | (buf[0] & 0xf);
+	y = ((int)(s8)buf[3] << 4) | (buf[2] & 0xf);
+	z = ((int)(s8)buf[5] << 4) | (buf[4] & 0xf);
 
 	input_report_abs(dev->input, ABS_X, x);
 	input_report_abs(dev->input, ABS_Y, y);

drivers/input/misc/twl4030-pwrbutton.c

@@ -114,18 +114,8 @@ static struct platform_driver twl4030_pwrbutton_driver = {
 	},
 };
 
-static int __init twl4030_pwrbutton_init(void)
-{
-	return platform_driver_probe(&twl4030_pwrbutton_driver,
+module_platform_driver_probe(twl4030_pwrbutton_driver,
 			twl4030_pwrbutton_probe);
-}
-module_init(twl4030_pwrbutton_init);
-
-static void __exit twl4030_pwrbutton_exit(void)
-{
-	platform_driver_unregister(&twl4030_pwrbutton_driver);
-}
-module_exit(twl4030_pwrbutton_exit);
 
 MODULE_ALIAS("platform:twl4030_pwrbutton");
 MODULE_DESCRIPTION("Triton2 Power Button");

drivers/input/mouse/alps.c

@@ -1013,8 +1013,8 @@ static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
 	if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
 		return -EIO;
 
-	psmouse_dbg(psmouse, "%2.2X report: %2.2x %2.2x %2.2x\n",
-		    repeated_command, param[0], param[1], param[2]);
+	psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
+		    repeated_command, param);
 	return 0;
 }
 
@@ -1274,9 +1274,7 @@ static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
 		psmouse_warn(psmouse, "trackstick E7 report failed\n");
 		ret = -ENODEV;
 	} else {
-		psmouse_dbg(psmouse,
-			    "trackstick E7 report: %2.2x %2.2x %2.2x\n",
-			    param[0], param[1], param[2]);
+		psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
 
 		/*
 		 * Not sure what this does, but it is absolutely
@@ -1323,6 +1321,7 @@ static int alps_hw_init_v3(struct psmouse *psmouse)
 	reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
 	if (reg_val == -EIO)
 		goto error;
+
 	if (reg_val == 0 &&
 	    alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
 		goto error;
@@ -1676,8 +1675,7 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
 	}
 
 	psmouse_info(psmouse,
-		"Unknown ALPS touchpad: E7=%2.2x %2.2x %2.2x, EC=%2.2x %2.2x %2.2x\n",
-		e7[0], e7[1], e7[2], ec[0], ec[1], ec[2]);
+		     "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
 
 	return -EINVAL;
 }

drivers/input/mouse/amimouse.c

@@ -146,18 +146,6 @@ static struct platform_driver amimouse_driver = {
 	},
 };
 
-static int __init amimouse_init(void)
-{
-	return platform_driver_probe(&amimouse_driver, amimouse_probe);
-}
-
-module_init(amimouse_init);
-
-static void __exit amimouse_exit(void)
-{
-	platform_driver_unregister(&amimouse_driver);
-}
-
-module_exit(amimouse_exit);
+module_platform_driver_probe(amimouse_driver, amimouse_probe);
 
 MODULE_ALIAS("platform:amiga-mouse");

drivers/input/mouse/trackpoint.h

@@ -126,6 +126,8 @@
 #define TP_DEF_PTSON		0x00
 #define TP_DEF_SKIPBACK		0x00
 #define TP_DEF_EXT_DEV		0x00	/* 0 means enabled */
+#define TP_DEF_TWOHAND		0x00
+#define TP_DEF_SOURCE_TAG	0x00
 
 #define MAKE_PS2_CMD(params, results, cmd) ((params<<12) | (results<<8) | (cmd))
 
@@ -136,9 +138,9 @@ struct trackpoint_data
 	unsigned char thresh, upthresh;
 	unsigned char ztime, jenks;
 
+	/* toggles */
 	unsigned char press_to_select;
 	unsigned char skipback;
-
 	unsigned char ext_dev;
 };
 

drivers/input/serio/Kconfig

@@ -245,4 +245,14 @@ config SERIO_ARC_PS2
 	  To compile this driver as a module, choose M here; the module
 	  will be called arc_ps2.
 
+config SERIO_APBPS2
+	tristate "GRLIB APBPS2 PS/2 keyboard/mouse controller"
+	depends on OF
+	help
+	  Say Y here if you want support for GRLIB APBPS2 peripherals used
+	  to connect to PS/2 keyboard and/or mouse.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called apbps2.
+
 endif

drivers/input/serio/Makefile

@@ -26,3 +26,4 @@ obj-$(CONFIG_SERIO_AMS_DELTA)	+= ams_delta_serio.o
 obj-$(CONFIG_SERIO_XILINX_XPS_PS2)	+= xilinx_ps2.o
 obj-$(CONFIG_SERIO_ALTERA_PS2)	+= altera_ps2.o
 obj-$(CONFIG_SERIO_ARC_PS2)	+= arc_ps2.o
+obj-$(CONFIG_SERIO_APBPS2)	+= apbps2.o

drivers/input/serio/apbps2.c

+/*
+ * Copyright (C) 2013 Aeroflex Gaisler
+ *
+ * This driver supports the APBPS2 PS/2 core available in the GRLIB
+ * VHDL IP core library.
+ *
+ * Full documentation of the APBPS2 core can be found here:
+ * http://www.gaisler.com/products/grlib/grip.pdf
+ *
+ * See "Documentation/devicetree/bindings/input/ps2keyb-mouse-apbps2.txt" for
+ * information on open firmware properties.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Contributors: Daniel Hellstrom <daniel@gaisler.com>
+ */
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <linux/serio.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/of_irq.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+
+struct apbps2_regs {
+	u32 __iomem data;	/* 0x00 */
+	u32 __iomem status;	/* 0x04 */
+	u32 __iomem ctrl;	/* 0x08 */
+	u32 __iomem reload;	/* 0x0c */
+};
+
+#define APBPS2_STATUS_DR	(1<<0)
+#define APBPS2_STATUS_PE	(1<<1)
+#define APBPS2_STATUS_FE	(1<<2)
+#define APBPS2_STATUS_KI	(1<<3)
+#define APBPS2_STATUS_RF	(1<<4)
+#define APBPS2_STATUS_TF	(1<<5)
+#define APBPS2_STATUS_TCNT	(0x1f<<22)
+#define APBPS2_STATUS_RCNT	(0x1f<<27)
+
+#define APBPS2_CTRL_RE		(1<<0)
+#define APBPS2_CTRL_TE		(1<<1)
+#define APBPS2_CTRL_RI		(1<<2)
+#define APBPS2_CTRL_TI		(1<<3)
+
+struct apbps2_priv {
+	struct serio		*io;
+	struct apbps2_regs	*regs;
+};
+
+static int apbps2_idx;
+
+static irqreturn_t apbps2_isr(int irq, void *dev_id)
+{
+	struct apbps2_priv *priv = dev_id;
+	unsigned long status, data, rxflags;
+	irqreturn_t ret = IRQ_NONE;
+
+	while ((status = ioread32be(&priv->regs->status)) & APBPS2_STATUS_DR) {
+		data = ioread32be(&priv->regs->data);
+		rxflags = (status & APBPS2_STATUS_PE) ? SERIO_PARITY : 0;
+		rxflags |= (status & APBPS2_STATUS_FE) ? SERIO_FRAME : 0;
+
+		/* clear error bits? */
+		if (rxflags)
+			iowrite32be(0, &priv->regs->status);
+
+		serio_interrupt(priv->io, data, rxflags);
+
+		ret = IRQ_HANDLED;
+	}
+
+	return ret;
+}
+
+static int apbps2_write(struct serio *io, unsigned char val)
+{
+	struct apbps2_priv *priv = io->port_data;
+	unsigned int tleft = 10000; /* timeout in 100ms */
+
+	/* delay until PS/2 controller has room for more chars */
+	while ((ioread32be(&priv->regs->status) & APBPS2_STATUS_TF) && tleft--)
+		udelay(10);
+
+	if ((ioread32be(&priv->regs->status) & APBPS2_STATUS_TF) == 0) {
+		iowrite32be(val, &priv->regs->data);
+
+		iowrite32be(APBPS2_CTRL_RE | APBPS2_CTRL_RI | APBPS2_CTRL_TE,
+				&priv->regs->ctrl);
+		return 0;
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int apbps2_open(struct serio *io)
+{
+	struct apbps2_priv *priv = io->port_data;
+	int limit;
+	unsigned long tmp;
+
+	/* clear error flags */
+	iowrite32be(0, &priv->regs->status);
+
+	/* Clear old data if available (unlikely) */
+	limit = 1024;
+	while ((ioread32be(&priv->regs->status) & APBPS2_STATUS_DR) && --limit)
+		tmp = ioread32be(&priv->regs->data);
+
+	/* Enable reciever and it's interrupt */
+	iowrite32be(APBPS2_CTRL_RE | APBPS2_CTRL_RI, &priv->regs->ctrl);
+
+	return 0;
+}
+
+static void apbps2_close(struct serio *io)
+{
+	struct apbps2_priv *priv = io->port_data;
+
+	/* stop interrupts at PS/2 HW level */
+	iowrite32be(0, &priv->regs->ctrl);
+}
+
+/* Initialize one APBPS2 PS/2 core */
+static int apbps2_of_probe(struct platform_device *ofdev)
+{
+	struct apbps2_priv *priv;
+	int irq, err;
+	u32 freq_hz;
+	struct resource *res;
+
+	priv = devm_kzalloc(&ofdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		dev_err(&ofdev->dev, "memory allocation failed\n");
+		return -ENOMEM;
+	}
+
+	/* Find Device Address */
+	res = platform_get_resource(ofdev, IORESOURCE_MEM, 0);
+	priv->regs = devm_ioremap_resource(&ofdev->dev, res);
+	if (IS_ERR(priv->regs))
+		return PTR_ERR(priv->regs);
+
+	/* Reset hardware, disable interrupt */
+	iowrite32be(0, &priv->regs->ctrl);
+
+	/* IRQ */
+	irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
+	err = devm_request_irq(&ofdev->dev, irq, apbps2_isr,
+				IRQF_SHARED, "apbps2", priv);
+	if (err) {
+		dev_err(&ofdev->dev, "request IRQ%d failed\n", irq);
+		return err;
+	}
+
+	/* Get core frequency */
+	if (of_property_read_u32(ofdev->dev.of_node, "freq", &freq_hz)) {
+		dev_err(&ofdev->dev, "unable to get core frequency\n");
+		return -EINVAL;
+	}
+
+	/* Set reload register to core freq in kHz/10 */
+	iowrite32be(freq_hz / 10000, &priv->regs->reload);
+
+	priv->io = kzalloc(sizeof(struct serio), GFP_KERNEL);
+	if (!priv->io)
+		return -ENOMEM;
+
+	priv->io->id.type = SERIO_8042;
+	priv->io->open = apbps2_open;
+	priv->io->close = apbps2_close;
+	priv->io->write = apbps2_write;
+	priv->io->port_data = priv;
+	strlcpy(priv->io->name, "APBPS2 PS/2", sizeof(priv->io->name));
+	snprintf(priv->io->phys, sizeof(priv->io->phys),
+		 "apbps2_%d", apbps2_idx++);
+
+	dev_info(&ofdev->dev, "irq = %d, base = 0x%p\n", irq, priv->regs);
+
+	serio_register_port(priv->io);
+
+	platform_set_drvdata(ofdev, priv);
+
+	return 0;
+}
+
+static int apbps2_of_remove(struct platform_device *of_dev)
+{
+	struct apbps2_priv *priv = platform_get_drvdata(of_dev);
+
+	serio_unregister_port(priv->io);
+
+	return 0;
+}
+
+static struct of_device_id apbps2_of_match[] = {
+	{ .name = "GAISLER_APBPS2", },
+	{ .name = "01_060", },
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, apbps2_of_match);
+
+static struct platform_driver apbps2_of_driver = {
+	.driver = {
+		.name = "grlib-apbps2",
+		.owner = THIS_MODULE,
+		.of_match_table = apbps2_of_match,
+	},
+	.probe = apbps2_of_probe,
+	.remove = apbps2_of_remove,
+};
+
+module_platform_driver(apbps2_of_driver);
+
+MODULE_AUTHOR("Aeroflex Gaisler AB.");
+MODULE_DESCRIPTION("GRLIB APBPS2 PS/2 serial I/O");
+MODULE_LICENSE("GPL");

drivers/input/serio/arc_ps2.c

@@ -14,6 +14,7 @@
 #include <linux/input.h>
 #include <linux/serio.h>
 #include <linux/platform_device.h>
+#include <linux/of.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
@@ -259,10 +260,19 @@ static int arc_ps2_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id arc_ps2_match[] = {
+	{ .compatible = "snps,arc_ps2" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, arc_ps2_match);
+#endif
+
 static struct platform_driver arc_ps2_driver = {
 	.driver	= {
-		.name	= "arc_ps2",
-		.owner	= THIS_MODULE,
+		.name		= "arc_ps2",
+		.owner		= THIS_MODULE,
+		.of_match_table	= of_match_ptr(arc_ps2_match),
 	},
 	.probe	= arc_ps2_probe,
 	.remove	= arc_ps2_remove,

drivers/input/serio/at32psif.c

@@ -359,18 +359,7 @@ static struct platform_driver psif_driver = {
 	},
 };
 
-static int __init psif_init(void)
-{
-	return platform_driver_probe(&psif_driver, psif_probe);
-}
-
-static void __exit psif_exit(void)
-{
-	platform_driver_unregister(&psif_driver);
-}
-
-module_init(psif_init);
-module_exit(psif_exit);
+module_platform_driver_probe(psif_driver, psif_probe);
 
 MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
 MODULE_DESCRIPTION("Atmel AVR32 PSIF PS/2 driver");

drivers/input/serio/q40kbd.c

@@ -193,15 +193,4 @@ static struct platform_driver q40kbd_driver = {
 	.remove		= q40kbd_remove,
 };
 
-static int __init q40kbd_init(void)
-{
-	return platform_driver_probe(&q40kbd_driver, q40kbd_probe);
-}
-
-static void __exit q40kbd_exit(void)
-{
-	platform_driver_unregister(&q40kbd_driver);
-}
-
-module_init(q40kbd_init);
-module_exit(q40kbd_exit);
+module_platform_driver_probe(q40kbd_driver, q40kbd_probe);

drivers/input/touchscreen/ad7877.c

@@ -273,7 +273,7 @@ static int ad7877_write(struct spi_device *spi, u16 reg, u16 val)
 
 static int ad7877_read_adc(struct spi_device *spi, unsigned command)
 {
-	struct ad7877 *ts = dev_get_drvdata(&spi->dev);
+	struct ad7877 *ts = spi_get_drvdata(spi);
 	struct ser_req *req;
 	int status;
 	int sample;
@@ -720,7 +720,7 @@ static int ad7877_probe(struct spi_device *spi)
 		goto err_free_mem;
 	}
 
-	dev_set_drvdata(&spi->dev, ts);
+	spi_set_drvdata(spi, ts);
 	ts->spi = spi;
 	ts->input = input_dev;
 
@@ -806,13 +806,13 @@ static int ad7877_probe(struct spi_device *spi)
 err_free_mem:
 	input_free_device(input_dev);
 	kfree(ts);
-	dev_set_drvdata(&spi->dev, NULL);
+	spi_set_drvdata(spi, NULL);
 	return err;
 }
 
 static int ad7877_remove(struct spi_device *spi)
 {
-	struct ad7877 *ts = dev_get_drvdata(&spi->dev);
+	struct ad7877 *ts = spi_get_drvdata(spi);
 
 	sysfs_remove_group(&spi->dev.kobj, &ad7877_attr_group);
 
@@ -823,7 +823,7 @@ static int ad7877_remove(struct spi_device *spi)
 	kfree(ts);
 
 	dev_dbg(&spi->dev, "unregistered touchscreen\n");
-	dev_set_drvdata(&spi->dev, NULL);
+	spi_set_drvdata(spi, NULL);
 
 	return 0;
 }

drivers/input/touchscreen/ads7846.c

@@ -1245,7 +1245,7 @@ static int ads7846_probe(struct spi_device *spi)
 		goto err_free_mem;
 	}
 
-	dev_set_drvdata(&spi->dev, ts);
+	spi_set_drvdata(spi, ts);
 
 	ts->packet = packet;
 	ts->spi = spi;
@@ -1397,7 +1397,7 @@ static int ads7846_probe(struct spi_device *spi)
 
 static int ads7846_remove(struct spi_device *spi)
 {
-	struct ads7846 *ts = dev_get_drvdata(&spi->dev);
+	struct ads7846 *ts = spi_get_drvdata(spi);
 
 	device_init_wakeup(&spi->dev, false);
 

drivers/input/touchscreen/atmel-wm97xx.c

@@ -432,17 +432,7 @@ static struct platform_driver atmel_wm97xx_driver = {
 	},
 };
 
-static int __init atmel_wm97xx_init(void)
-{
-	return platform_driver_probe(&atmel_wm97xx_driver, atmel_wm97xx_probe);
-}
-module_init(atmel_wm97xx_init);
-
-static void __exit atmel_wm97xx_exit(void)
-{
-	platform_driver_unregister(&atmel_wm97xx_driver);
-}
-module_exit(atmel_wm97xx_exit);
+module_platform_driver_probe(atmel_wm97xx_driver, atmel_wm97xx_probe);
 
 MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
 MODULE_DESCRIPTION("wm97xx continuous touch driver for Atmel AT91 and AVR32");

drivers/input/touchscreen/auo-pixcir-ts.c

@@ -31,6 +31,8 @@
 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/input/auo-pixcir-ts.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
 
 /*
  * Coordinate calculation:
@@ -111,6 +113,7 @@
 struct auo_pixcir_ts {
 	struct i2c_client	*client;
 	struct input_dev	*input;
+	const struct auo_pixcir_ts_platdata *pdata;
 	char			phys[32];
 
 	/* special handling for touch_indicate interupt mode */
@@ -132,7 +135,7 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
 				   struct auo_point_t *point)
 {
 	struct i2c_client *client = ts->client;
-	const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+	const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
 	uint8_t raw_coord[8];
 	uint8_t raw_area[4];
 	int i, ret;
@@ -178,8 +181,7 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
 static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
 {
 	struct auo_pixcir_ts *ts = dev_id;
-	struct i2c_client *client = ts->client;
-	const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+	const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
 	struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS];
 	int i;
 	int ret;
@@ -290,7 +292,7 @@ static int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
 					   int int_setting)
 {
 	struct i2c_client *client = ts->client;
-	struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+	const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
 	int ret;
 
 	ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
@@ -479,53 +481,105 @@ static int auo_pixcir_resume(struct device *dev)
 }
 #endif
 
-static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops, auo_pixcir_suspend,
-			 auo_pixcir_resume);
+static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
+			 auo_pixcir_suspend, auo_pixcir_resume);
+
+#ifdef CONFIG_OF
+static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
+{
+	struct auo_pixcir_ts_platdata *pdata;
+	struct device_node *np = dev->of_node;
+
+	if (!np)
+		return ERR_PTR(-ENOENT);
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		dev_err(dev, "failed to allocate platform data\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	pdata->gpio_int = of_get_gpio(np, 0);
+	if (!gpio_is_valid(pdata->gpio_int)) {
+		dev_err(dev, "failed to get interrupt gpio\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	pdata->gpio_rst = of_get_gpio(np, 1);
+	if (!gpio_is_valid(pdata->gpio_rst)) {
+		dev_err(dev, "failed to get reset gpio\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (of_property_read_u32(np, "x-size", &pdata->x_max)) {
+		dev_err(dev, "failed to get x-size property\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (of_property_read_u32(np, "y-size", &pdata->y_max)) {
+		dev_err(dev, "failed to get y-size property\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	/* default to asserting the interrupt when the screen is touched */
+	pdata->int_setting = AUO_PIXCIR_INT_TOUCH_IND;
+
+	return pdata;
+}
+#else
+static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
+{
+	return ERR_PTR(-EINVAL);
+}
+#endif
+
+static void auo_pixcir_reset(void *data)
+{
+	struct auo_pixcir_ts *ts = data;
+
+	gpio_set_value(ts->pdata->gpio_rst, 0);
+}
 
 static int auo_pixcir_probe(struct i2c_client *client,
-				      const struct i2c_device_id *id)
+			    const struct i2c_device_id *id)
 {
-	const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+	const struct auo_pixcir_ts_platdata *pdata;
 	struct auo_pixcir_ts *ts;
 	struct input_dev *input_dev;
-	int ret;
-
-	if (!pdata)
-		return -EINVAL;
+	int version;
+	int error;
+
+	pdata = dev_get_platdata(&client->dev);
+	if (!pdata) {
+		pdata = auo_pixcir_parse_dt(&client->dev);
+		if (IS_ERR(pdata))
+			return PTR_ERR(pdata);
+	}
 
-	ts = kzalloc(sizeof(struct auo_pixcir_ts), GFP_KERNEL);
+	ts = devm_kzalloc(&client->dev,
+			  sizeof(struct auo_pixcir_ts), GFP_KERNEL);
 	if (!ts)
 		return -ENOMEM;
 
-	ret = gpio_request(pdata->gpio_int, "auo_pixcir_ts_int");
-	if (ret) {
-		dev_err(&client->dev, "request of gpio %d failed, %d\n",
-			pdata->gpio_int, ret);
-		goto err_gpio_int;
+	input_dev = devm_input_allocate_device(&client->dev);
+	if (!input_dev) {
+		dev_err(&client->dev, "could not allocate input device\n");
+		return -ENOMEM;
 	}
 
-	if (pdata->init_hw)
-		pdata->init_hw(client);
-
+	ts->pdata = pdata;
 	ts->client = client;
+	ts->input = input_dev;
 	ts->touch_ind_mode = 0;
+	ts->stopped = true;
 	init_waitqueue_head(&ts->wait);
 
 	snprintf(ts->phys, sizeof(ts->phys),
 		 "%s/input0", dev_name(&client->dev));
 
-	input_dev = input_allocate_device();
-	if (!input_dev) {
-		dev_err(&client->dev, "could not allocate input device\n");
-		goto err_input_alloc;
-	}
-
-	ts->input = input_dev;
-
 	input_dev->name = "AUO-Pixcir touchscreen";
 	input_dev->phys = ts->phys;
 	input_dev->id.bustype = BUS_I2C;
-	input_dev->dev.parent = &client->dev;
 
 	input_dev->open = auo_pixcir_input_open;
 	input_dev->close = auo_pixcir_input_close;
@@ -550,70 +604,70 @@ static int auo_pixcir_probe(struct i2c_client *client,
 			     AUO_PIXCIR_MAX_AREA, 0, 0);
 	input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
 
-	ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
-	if (ret < 0)
-		goto err_fw_vers;
-	dev_info(&client->dev, "firmware version 0x%X\n", ret);
-
-	ret = auo_pixcir_int_config(ts, pdata->int_setting);
-	if (ret)
-		goto err_fw_vers;
-
 	input_set_drvdata(ts->input, ts);
-	ts->stopped = true;
 
-	ret = request_threaded_irq(client->irq, NULL, auo_pixcir_interrupt,
-				   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
-				   input_dev->name, ts);
-	if (ret) {
-		dev_err(&client->dev, "irq %d requested failed\n", client->irq);
-		goto err_fw_vers;
+	error = devm_gpio_request_one(&client->dev, pdata->gpio_int,
+				      GPIOF_DIR_IN, "auo_pixcir_ts_int");
+	if (error) {
+		dev_err(&client->dev, "request of gpio %d failed, %d\n",
+			pdata->gpio_int, error);
+		return error;
 	}
 
-	/* stop device and put it into deep sleep until it is opened */
-	ret = auo_pixcir_stop(ts);
-	if (ret < 0)
-		goto err_input_register;
-
-	ret = input_register_device(input_dev);
-	if (ret) {
-		dev_err(&client->dev, "could not register input device\n");
-		goto err_input_register;
+	error = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
+				      GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
+				      "auo_pixcir_ts_rst");
+	if (error) {
+		dev_err(&client->dev, "request of gpio %d failed, %d\n",
+			pdata->gpio_rst, error);
+		return error;
 	}
 
-	i2c_set_clientdata(client, ts);
-
-	return 0;
+	error = devm_add_action(&client->dev, auo_pixcir_reset, ts);
+	if (error) {
+		auo_pixcir_reset(ts);
+		dev_err(&client->dev, "failed to register reset action, %d\n",
+			error);
+		return error;
+	}
 
-err_input_register:
-	free_irq(client->irq, ts);
-err_fw_vers:
-	input_free_device(input_dev);
-err_input_alloc:
-	if (pdata->exit_hw)
-		pdata->exit_hw(client);
-	gpio_free(pdata->gpio_int);
-err_gpio_int:
-	kfree(ts);
+	msleep(200);
 
-	return ret;
-}
-
-static int auo_pixcir_remove(struct i2c_client *client)
-{
-	struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
-	const struct auo_pixcir_ts_platdata *pdata = client->dev.platform_data;
+	version = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
+	if (version < 0) {
+		error = version;
+		return error;
+	}
 
-	free_irq(client->irq, ts);
+	dev_info(&client->dev, "firmware version 0x%X\n", version);
 
-	input_unregister_device(ts->input);
+	error = auo_pixcir_int_config(ts, pdata->int_setting);
+	if (error)
+		return error;
 
-	if (pdata->exit_hw)
-		pdata->exit_hw(client);
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, auo_pixcir_interrupt,
+					  IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+					  input_dev->name, ts);
+	if (error) {
+		dev_err(&client->dev, "irq %d requested failed, %d\n",
+			client->irq, error);
+		return error;
+	}
 
-	gpio_free(pdata->gpio_int);
+	/* stop device and put it into deep sleep until it is opened */
+	error = auo_pixcir_stop(ts);
+	if (error)
+		return error;
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(&client->dev, "could not register input device, %d\n",
+			error);
+		return error;
+	}
 
-	kfree(ts);
+	i2c_set_clientdata(client, ts);
 
 	return 0;
 }
@@ -624,14 +678,22 @@ static const struct i2c_device_id auo_pixcir_idtable[] = {
 };
 MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable);
 
+#ifdef CONFIG_OF
+static struct of_device_id auo_pixcir_ts_dt_idtable[] = {
+	{ .compatible = "auo,auo_pixcir_ts" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
+#endif
+
 static struct i2c_driver auo_pixcir_driver = {
 	.driver = {
 		.owner	= THIS_MODULE,
 		.name	= "auo_pixcir_ts",
 		.pm	= &auo_pixcir_pm_ops,
+		.of_match_table	= of_match_ptr(auo_pixcir_ts_dt_idtable),
 	},
 	.probe		= auo_pixcir_probe,
-	.remove		= auo_pixcir_remove,
 	.id_table	= auo_pixcir_idtable,
 };
 

drivers/input/touchscreen/edt-ft5x06.c

@@ -440,8 +440,7 @@ static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata)
 		return -EIO;
 	}
 
-	if (tsdata->raw_buffer)
-		kfree(tsdata->raw_buffer);
+	kfree(tsdata->raw_buffer);
 	tsdata->raw_buffer = NULL;
 
 	/* restore parameters */

drivers/input/touchscreen/eeti_ts.c

@@ -206,8 +206,7 @@ static int eeti_ts_probe(struct i2c_client *client,
 	if (err < 0)
 		goto err1;
 
-	if (pdata)
-		priv->irq_active_high = pdata->irq_active_high;
+	priv->irq_active_high = pdata->irq_active_high;
 
 	irq_flags = priv->irq_active_high ?
 		IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING;

drivers/input/touchscreen/mc13783_ts.c

@@ -250,17 +250,7 @@ static struct platform_driver mc13783_ts_driver = {
 	},
 };
 
-static int __init mc13783_ts_init(void)
-{
-	return platform_driver_probe(&mc13783_ts_driver, &mc13783_ts_probe);
-}
-module_init(mc13783_ts_init);
-
-static void __exit mc13783_ts_exit(void)
-{
-	platform_driver_unregister(&mc13783_ts_driver);
-}
-module_exit(mc13783_ts_exit);
+module_platform_driver_probe(mc13783_ts_driver, mc13783_ts_probe);
 
 MODULE_DESCRIPTION("MC13783 input touchscreen driver");
 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");

drivers/input/touchscreen/st1232.c

@@ -19,13 +19,16 @@
  */
 
 #include <linux/delay.h>
+#include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/of_gpio.h>
 #include <linux/pm_qos.h>
 #include <linux/slab.h>
 #include <linux/types.h>
+#include <linux/platform_data/st1232_pdata.h>
 
 #define ST1232_TS_NAME	"st1232-ts"
 
@@ -48,6 +51,7 @@ struct st1232_ts_data {
 	struct input_dev *input_dev;
 	struct st1232_ts_finger finger[MAX_FINGERS];
 	struct dev_pm_qos_request low_latency_req;
+	int reset_gpio;
 };
 
 static int st1232_ts_read_data(struct st1232_ts_data *ts)
@@ -139,10 +143,17 @@ static irqreturn_t st1232_ts_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static void st1232_ts_power(struct st1232_ts_data *ts, bool poweron)
+{
+	if (gpio_is_valid(ts->reset_gpio))
+		gpio_direction_output(ts->reset_gpio, poweron);
+}
+
 static int st1232_ts_probe(struct i2c_client *client,
 					const struct i2c_device_id *id)
 {
 	struct st1232_ts_data *ts;
+	struct st1232_pdata *pdata = client->dev.platform_data;
 	struct input_dev *input_dev;
 	int error;
 
@@ -156,17 +167,36 @@ static int st1232_ts_probe(struct i2c_client *client,
 		return -EINVAL;
 	}
 
+	ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
+	if (!ts)
+		return -ENOMEM;
 
-	ts = kzalloc(sizeof(struct st1232_ts_data), GFP_KERNEL);
-	input_dev = input_allocate_device();
-	if (!ts || !input_dev) {
-		error = -ENOMEM;
-		goto err_free_mem;
-	}
+	input_dev = devm_input_allocate_device(&client->dev);
+	if (!input_dev)
+		return -ENOMEM;
 
 	ts->client = client;
 	ts->input_dev = input_dev;
 
+	if (pdata)
+		ts->reset_gpio = pdata->reset_gpio;
+	else if (client->dev.of_node)
+		ts->reset_gpio = of_get_gpio(client->dev.of_node, 0);
+	else
+		ts->reset_gpio = -ENODEV;
+
+	if (gpio_is_valid(ts->reset_gpio)) {
+		error = devm_gpio_request(&client->dev, ts->reset_gpio, NULL);
+		if (error) {
+			dev_err(&client->dev,
+				"Unable to request GPIO pin %d.\n",
+				ts->reset_gpio);
+				return error;
+		}
+	}
+
+	st1232_ts_power(ts, true);
+
 	input_dev->name = "st1232-touchscreen";
 	input_dev->id.bustype = BUS_I2C;
 	input_dev->dev.parent = &client->dev;
@@ -179,31 +209,26 @@ static int st1232_ts_probe(struct i2c_client *client,
 	input_set_abs_params(input_dev, ABS_MT_POSITION_X, MIN_X, MAX_X, 0, 0);
 	input_set_abs_params(input_dev, ABS_MT_POSITION_Y, MIN_Y, MAX_Y, 0, 0);
 
-	error = request_threaded_irq(client->irq, NULL, st1232_ts_irq_handler,
-				     IRQF_ONESHOT, client->name, ts);
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, st1232_ts_irq_handler,
+					  IRQF_ONESHOT,
+					  client->name, ts);
 	if (error) {
 		dev_err(&client->dev, "Failed to register interrupt\n");
-		goto err_free_mem;
+		return error;
 	}
 
 	error = input_register_device(ts->input_dev);
 	if (error) {
 		dev_err(&client->dev, "Unable to register %s input device\n",
 			input_dev->name);
-		goto err_free_irq;
+		return error;
 	}
 
 	i2c_set_clientdata(client, ts);
 	device_init_wakeup(&client->dev, 1);
 
 	return 0;
-
-err_free_irq:
-	free_irq(client->irq, ts);
-err_free_mem:
-	input_free_device(input_dev);
-	kfree(ts);
-	return error;
 }
 
 static int st1232_ts_remove(struct i2c_client *client)
@@ -211,9 +236,7 @@ static int st1232_ts_remove(struct i2c_client *client)
 	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
 	device_init_wakeup(&client->dev, 0);
-	free_irq(client->irq, ts);
-	input_unregister_device(ts->input_dev);
-	kfree(ts);
+	st1232_ts_power(ts, false);
 
 	return 0;
 }
@@ -222,11 +245,14 @@ static int st1232_ts_remove(struct i2c_client *client)
 static int st1232_ts_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
+	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev))
+	if (device_may_wakeup(&client->dev)) {
 		enable_irq_wake(client->irq);
-	else
+	} else {
 		disable_irq(client->irq);
+		st1232_ts_power(ts, false);
+	}
 
 	return 0;
 }
@@ -234,11 +260,14 @@ static int st1232_ts_suspend(struct device *dev)
 static int st1232_ts_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
+	struct st1232_ts_data *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev))
+	if (device_may_wakeup(&client->dev)) {
 		disable_irq_wake(client->irq);
-	else
+	} else {
+		st1232_ts_power(ts, true);
 		enable_irq(client->irq);
+	}
 
 	return 0;
 }

drivers/input/touchscreen/wm9712.c

@@ -162,14 +162,14 @@ static void wm9712_phy_init(struct wm97xx *wm)
 	if (rpu) {
 		dig2 &= 0xffc0;
 		dig2 |= WM9712_RPU(rpu);
-		dev_dbg(wm->dev, "setting pen detect pull-up to %d Ohms",
+		dev_dbg(wm->dev, "setting pen detect pull-up to %d Ohms\n",
 			64000 / rpu);
 	}
 
 	/* WM9712 five wire */
 	if (five_wire) {
 		dig2 |= WM9712_45W;
-		dev_dbg(wm->dev, "setting 5-wire touchscreen mode.");
+		dev_dbg(wm->dev, "setting 5-wire touchscreen mode.\n");
 
 		if (pil) {
 			dev_warn(wm->dev, "pressure measurement is not "
@@ -182,21 +182,21 @@ static void wm9712_phy_init(struct wm97xx *wm)
 	if (pil == 2) {
 		dig2 |= WM9712_PIL;
 		dev_dbg(wm->dev,
-			"setting pressure measurement current to 400uA.");
+			"setting pressure measurement current to 400uA.\n");
 	} else if (pil)
 		dev_dbg(wm->dev,
-			"setting pressure measurement current to 200uA.");
+			"setting pressure measurement current to 200uA.\n");
 	if (!pil)
 		pressure = 0;
 
 	/* polling mode sample settling delay */
 	if (delay < 0 || delay > 15) {
-		dev_dbg(wm->dev, "supplied delay out of range.");
+		dev_dbg(wm->dev, "supplied delay out of range.\n");
 		delay = 4;
 	}
 	dig1 &= 0xff0f;
 	dig1 |= WM97XX_DELAY(delay);
-	dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.",
+	dev_dbg(wm->dev, "setting adc sample delay to %d u Secs.\n",
 		delay_table[delay]);
 
 	/* mask */
@@ -285,7 +285,7 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample)
 		if (is_pden(wm))
 			wm->pen_probably_down = 0;
 		else
-			dev_dbg(wm->dev, "adc sample timeout");
+			dev_dbg(wm->dev, "adc sample timeout\n");
 		return RC_PENUP;
 	}
 
@@ -295,15 +295,19 @@ static int wm9712_poll_sample(struct wm97xx *wm, int adcsel, int *sample)
 
 	/* check we have correct sample */
 	if ((*sample ^ adcsel) & WM97XX_ADCSEL_MASK) {
-		dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x",
+		dev_dbg(wm->dev, "adc wrong sample, wanted %x got %x\n",
 			adcsel & WM97XX_ADCSEL_MASK,
 			*sample & WM97XX_ADCSEL_MASK);
-		return RC_PENUP;
+		return RC_AGAIN;
 	}
 
 	if (wants_pen && !(*sample & WM97XX_PEN_DOWN)) {
-		wm->pen_probably_down = 0;
-		return RC_PENUP;
+		/* Sometimes it reads a wrong value the first time. */
+		*sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD);
+		if (!(*sample & WM97XX_PEN_DOWN)) {
+			wm->pen_probably_down = 0;
+			return RC_PENUP;
+		}
 	}
 
 	return RC_VALID;
@@ -345,7 +349,7 @@ static int wm9712_poll_coord(struct wm97xx *wm, struct wm97xx_data *data)
 		if (is_pden(wm))
 			wm->pen_probably_down = 0;
 		else
-			dev_dbg(wm->dev, "adc sample timeout");
+			dev_dbg(wm->dev, "adc sample timeout\n");
 		return RC_PENUP;
 	}
 

drivers/input/touchscreen/wm97xx-core.c

@@ -442,6 +442,16 @@ static int wm97xx_read_samples(struct wm97xx *wm)
 			"pen down: x=%x:%d, y=%x:%d, pressure=%x:%d\n",
 			data.x >> 12, data.x & 0xfff, data.y >> 12,
 			data.y & 0xfff, data.p >> 12, data.p & 0xfff);
+
+		if (abs_x[0] > (data.x & 0xfff) ||
+		    abs_x[1] < (data.x & 0xfff) ||
+		    abs_y[0] > (data.y & 0xfff) ||
+		    abs_y[1] < (data.y & 0xfff)) {
+			dev_dbg(wm->dev, "Measurement out of range, dropping it\n");
+			rc = RC_AGAIN;
+			goto out;
+		}
+
 		input_report_abs(wm->input_dev, ABS_X, data.x & 0xfff);
 		input_report_abs(wm->input_dev, ABS_Y, data.y & 0xfff);
 		input_report_abs(wm->input_dev, ABS_PRESSURE, data.p & 0xfff);
@@ -455,6 +465,7 @@ static int wm97xx_read_samples(struct wm97xx *wm)
 		wm->ts_reader_interval = wm->ts_reader_min_interval;
 	}
 
+out:
 	mutex_unlock(&wm->codec_mutex);
 	return rc;
 }

drivers/tty/sysrq.c

@@ -43,6 +43,7 @@
 #include <linux/input.h>
 #include <linux/uaccess.h>
 #include <linux/moduleparam.h>
+#include <linux/jiffies.h>
 
 #include <asm/ptrace.h>
 #include <asm/irq_regs.h>
@@ -51,6 +52,9 @@
 static int __read_mostly sysrq_enabled = SYSRQ_DEFAULT_ENABLE;
 static bool __read_mostly sysrq_always_enabled;
 
+unsigned short platform_sysrq_reset_seq[] __weak = { KEY_RESERVED };
+int sysrq_reset_downtime_ms __weak;
+
 static bool sysrq_on(void)
 {
 	return sysrq_enabled || sysrq_always_enabled;
@@ -586,6 +590,7 @@ struct sysrq_state {
 	int reset_seq_len;
 	int reset_seq_cnt;
 	int reset_seq_version;
+	struct timer_list keyreset_timer;
 };
 
 #define SYSRQ_KEY_RESET_MAX	20 /* Should be plenty */
@@ -619,29 +624,51 @@ static void sysrq_parse_reset_sequence(struct sysrq_state *state)
 	state->reset_seq_version = sysrq_reset_seq_version;
 }
 
-static bool sysrq_detect_reset_sequence(struct sysrq_state *state,
+static void sysrq_do_reset(unsigned long dummy)
+{
+	__handle_sysrq(sysrq_xlate[KEY_B], false);
+}
+
+static void sysrq_handle_reset_request(struct sysrq_state *state)
+{
+	if (sysrq_reset_downtime_ms)
+		mod_timer(&state->keyreset_timer,
+			jiffies + msecs_to_jiffies(sysrq_reset_downtime_ms));
+	else
+		sysrq_do_reset(0);
+}
+
+static void sysrq_detect_reset_sequence(struct sysrq_state *state,
 					unsigned int code, int value)
 {
 	if (!test_bit(code, state->reset_keybit)) {
 		/*
 		 * Pressing any key _not_ in reset sequence cancels
-		 * the reset sequence.
+		 * the reset sequence.  Also cancelling the timer in
+		 * case additional keys were pressed after a reset
+		 * has been requested.
 		 */
-		if (value && state->reset_seq_cnt)
+		if (value && state->reset_seq_cnt) {
 			state->reset_canceled = true;
+			del_timer(&state->keyreset_timer);
+		}
 	} else if (value == 0) {
-		/* key release */
+		/*
+		 * Key release - all keys in the reset sequence need
+		 * to be pressed and held for the reset timeout
+		 * to hold.
+		 */
+		del_timer(&state->keyreset_timer);
+
 		if (--state->reset_seq_cnt == 0)
 			state->reset_canceled = false;
 	} else if (value == 1) {
 		/* key press, not autorepeat */
 		if (++state->reset_seq_cnt == state->reset_seq_len &&
 		    !state->reset_canceled) {
-			return true;
+			sysrq_handle_reset_request(state);
 		}
 	}
-
-	return false;
 }
 
 static void sysrq_reinject_alt_sysrq(struct work_struct *work)
@@ -748,10 +775,8 @@ static bool sysrq_handle_keypress(struct sysrq_state *sysrq,
 		if (was_active)
 			schedule_work(&sysrq->reinject_work);
 
-		if (sysrq_detect_reset_sequence(sysrq, code, value)) {
-			/* Force emergency reboot */
-			__handle_sysrq(sysrq_xlate[KEY_B], false);
-		}
+		/* Check for reset sequence */
+		sysrq_detect_reset_sequence(sysrq, code, value);
 
 	} else if (value == 0 && test_and_clear_bit(code, sysrq->key_down)) {
 		/*
@@ -812,6 +837,7 @@ static int sysrq_connect(struct input_handler *handler,
 	sysrq->handle.handler = handler;
 	sysrq->handle.name = "sysrq";
 	sysrq->handle.private = sysrq;
+	setup_timer(&sysrq->keyreset_timer, sysrq_do_reset, 0);
 
 	error = input_register_handle(&sysrq->handle);
 	if (error) {
@@ -841,6 +867,7 @@ static void sysrq_disconnect(struct input_handle *handle)
 
 	input_close_device(handle);
 	cancel_work_sync(&sysrq->reinject_work);
+	del_timer_sync(&sysrq->keyreset_timer);
 	input_unregister_handle(handle);
 	kfree(sysrq);
 }
@@ -870,8 +897,6 @@ static struct input_handler sysrq_handler = {
 
 static bool sysrq_handler_registered;
 
-unsigned short platform_sysrq_reset_seq[] __weak = { KEY_RESERVED };
-
 static inline void sysrq_register_handler(void)
 {
 	unsigned short key;
@@ -931,6 +956,8 @@ static struct kernel_param_ops param_ops_sysrq_reset_seq = {
 module_param_array_named(reset_seq, sysrq_reset_seq, sysrq_reset_seq,
 			 &sysrq_reset_seq_len, 0644);
 
+module_param_named(sysrq_downtime_ms, sysrq_reset_downtime_ms, int, 0644);
+
 #else
 
 static inline void sysrq_register_handler(void)

drivers/usb/class/cdc-acm.c

@@ -962,6 +962,10 @@ static int acm_probe(struct usb_interface *intf,
 
 	/* normal quirks */
 	quirks = (unsigned long)id->driver_info;
+
+	if (quirks == IGNORE_DEVICE)
+		return -ENODEV;
+
 	num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
 
 	/* handle quirks deadly to normal probing*/
@@ -1675,6 +1679,15 @@ static const struct usb_device_id acm_ids[] = {
 	.driver_info = NO_DATA_INTERFACE,
 	},
 
+#if IS_ENABLED(CONFIG_INPUT_IMS_PCU)
+	{ USB_DEVICE(0x04d8, 0x0082),	/* Application mode */
+	.driver_info = IGNORE_DEVICE,
+	},
+	{ USB_DEVICE(0x04d8, 0x0083),	/* Bootloader mode */
+	.driver_info = IGNORE_DEVICE,
+	},
+#endif
+
 	/* control interfaces without any protocol set */
 	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
 		USB_CDC_PROTO_NONE) },

drivers/usb/class/cdc-acm.h

@@ -128,3 +128,4 @@ struct acm {
 #define NO_CAP_LINE			4
 #define NOT_A_MODEM			8
 #define NO_DATA_INTERFACE		16
+#define IGNORE_DEVICE			32

include/linux/device.h

@@ -576,6 +576,10 @@ void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
 void __iomem *devm_request_and_ioremap(struct device *dev,
 			struct resource *res);
 
+/* allows to add/remove a custom action to devres stack */
+int devm_add_action(struct device *dev, void (*action)(void *), void *data);
+void devm_remove_action(struct device *dev, void (*action)(void *), void *data);
+
 struct device_dma_parameters {
 	/*
 	 * a low level driver may set these to teach IOMMU code about

include/linux/input/auo-pixcir-ts.h

@@ -43,12 +43,10 @@
  */
 struct auo_pixcir_ts_platdata {
 	int gpio_int;
+	int gpio_rst;
 
 	int int_setting;
 
-	void (*init_hw)(struct i2c_client *);
-	void (*exit_hw)(struct i2c_client *);
-
 	unsigned int x_max;
 	unsigned int y_max;
 };

include/linux/input/mt.h

@@ -19,6 +19,7 @@
 #define INPUT_MT_DIRECT		0x0002	/* direct device, e.g. touchscreen */
 #define INPUT_MT_DROP_UNUSED	0x0004	/* drop contacts not seen in frame */
 #define INPUT_MT_TRACK		0x0008	/* use in-kernel tracking */
+#define INPUT_MT_SEMI_MT	0x0010	/* semi-mt device, finger count handled manually */
 
 /**
  * struct input_mt_slot - represents the state of an input MT slot

include/linux/platform_data/st1232_pdata.h

+#ifndef _LINUX_ST1232_PDATA_H
+#define _LINUX_ST1232_PDATA_H
+
+/*
+ * Optional platform data
+ *
+ * Use this if you want the driver to drive the reset pin.
+ */
+struct st1232_pdata {
+	int reset_gpio;
+};
+
+#endif

include/uapi/linux/input.h

@@ -702,6 +702,11 @@ struct input_keymap_entry {
 #define KEY_CAMERA_LEFT		0x219
 #define KEY_CAMERA_RIGHT	0x21a
 
+#define KEY_ATTENDANT_ON	0x21b
+#define KEY_ATTENDANT_OFF	0x21c
+#define KEY_ATTENDANT_TOGGLE	0x21d	/* Attendant call on or off */
+#define KEY_LIGHTS_TOGGLE	0x21e	/* Reading light on or off */
+
 #define BTN_TRIGGER_HAPPY		0x2c0
 #define BTN_TRIGGER_HAPPY1		0x2c0
 #define BTN_TRIGGER_HAPPY2		0x2c1