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

Pull input subsystem updates from Dmitry Torokhov:

 - a big update from Mauro converting input documentation to ReST format

 - Synaptics PS/2 is now aware of SMBus companion devices, which means
   that we can now use native RMI4 protocol to handle touchpads, instead
   of relying on legacy PS/2 mode.

 - we removed support from BMA180 accelerometer from input devices as it
   is now handled properly by IIO

 - update to TSC2007 to corretcly report pressure

 - other miscellaneous driver fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (152 commits)
  Input: ar1021_i2c - use BIT to check for a bit
  Input: twl4030-pwrbutton - use input_set_capability() helper
  Input: twl4030-pwrbutton - use correct device for irq request
  Input: ar1021_i2c - enable touch mode during open
  Input: add uinput documentation
  dt-bindings: input: add bindings document for ar1021_i2c driver
  dt-bindings: input: rotary-encoder: fix typo
  Input: xen-kbdfront - add module parameter for setting resolution
  ARM: pxa/raumfeld: fix compile error in rotary controller resources
  Input: xpad - do not suggest writing to Dominic
  Input: xpad - don't use literal blocks inside footnotes
  Input: xpad - note that usb/devices is now at /sys/kernel/debug/
  Input: docs - freshen up introduction
  Input: docs - split input docs into kernel- and user-facing
  Input: docs - note that MT-A protocol is obsolete
  Input: docs - update joystick documentation a bit
  Input: docs - remove disclaimer/GPL notice
  Input: fix "Game console" heading level in joystick documentation
  Input: rotary-encoder - remove references to platform data from docs
  Input: move documentation for Amiga CD32
  ...

13 files changed, 335 insertions, 158 deletions

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 9f7b72249eac..3872488c3fd7 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -143,7 +143,7 @@ config INPUT_PM8941_PWRKEY
 
 config INPUT_PM8XXX_VIBRATOR
 	tristate "Qualcomm PM8XXX vibrator support"
-	depends on MFD_PM8XXX
+	depends on MFD_PM8XXX || MFD_SPMI_PMIC
 	select INPUT_FF_MEMLESS
 	help
 	  This option enables device driver support for the vibrator
diff --git a/drivers/input/misc/apanel.c b/drivers/input/misc/apanel.c
index 53630afab606..aad1df04c854 100644
--- a/drivers/input/misc/apanel.c
+++ b/drivers/input/misc/apanel.c
@@ -314,7 +314,8 @@ static int __init apanel_init(void)
 		if (devno >= APANEL_DEV_MAX)
 			pr_notice(APANEL ": unknown device %u found\n", devno);
 		else if (device_chip[devno] != CHIP_NONE)
-			pr_warning(APANEL ": duplicate entry for devno %u\n", devno);
+			pr_warn(APANEL ": duplicate entry for devno %u\n",
+				devno);
 
 		else if (method != 1 && method != 2 && method != 4) {
 			pr_notice(APANEL ": unknown method %u for devno %u\n",
diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c
index 1ac898db303a..f11807db6979 100644
--- a/drivers/input/misc/axp20x-pek.c
+++ b/drivers/input/misc/axp20x-pek.c
@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <linux/acpi.h>
 #include <linux/errno.h>
 #include <linux/irq.h>
 #include <linux/init.h>
@@ -188,21 +189,13 @@ static void axp20x_remove_sysfs_group(void *_data)
 	sysfs_remove_group(&dev->kobj, &axp20x_attribute_group);
 }
 
-static int axp20x_pek_probe(struct platform_device *pdev)
+static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek,
+					 struct platform_device *pdev)
 {
-	struct axp20x_pek *axp20x_pek;
-	struct axp20x_dev *axp20x;
+	struct axp20x_dev *axp20x = axp20x_pek->axp20x;
 	struct input_dev *idev;
 	int error;
 
-	axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek),
-				  GFP_KERNEL);
-	if (!axp20x_pek)
-		return -ENOMEM;
-
-	axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent);
-	axp20x = axp20x_pek->axp20x;
-
 	axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR");
 	if (axp20x_pek->irq_dbr < 0) {
 		dev_err(&pdev->dev, "No IRQ for PEK_DBR, error=%d\n",
@@ -239,7 +232,7 @@ static int axp20x_pek_probe(struct platform_device *pdev)
 					     axp20x_pek_irq, 0,
 					     "axp20x-pek-dbr", idev);
 	if (error < 0) {
-		dev_err(axp20x->dev, "Failed to request dbr IRQ#%d: %d\n",
+		dev_err(&pdev->dev, "Failed to request dbr IRQ#%d: %d\n",
 			axp20x_pek->irq_dbr, error);
 		return error;
 	}
@@ -248,30 +241,57 @@ static int axp20x_pek_probe(struct platform_device *pdev)
 					  axp20x_pek_irq, 0,
 					  "axp20x-pek-dbf", idev);
 	if (error < 0) {
-		dev_err(axp20x->dev, "Failed to request dbf IRQ#%d: %d\n",
+		dev_err(&pdev->dev, "Failed to request dbf IRQ#%d: %d\n",
 			axp20x_pek->irq_dbf, error);
 		return error;
 	}
 
-	error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group);
+	error = input_register_device(idev);
 	if (error) {
-		dev_err(axp20x->dev, "Failed to create sysfs attributes: %d\n",
+		dev_err(&pdev->dev, "Can't register input device: %d\n",
 			error);
 		return error;
 	}
 
-	error = devm_add_action(&pdev->dev,
-				axp20x_remove_sysfs_group, &pdev->dev);
+	return 0;
+}
+
+static int axp20x_pek_probe(struct platform_device *pdev)
+{
+	struct axp20x_pek *axp20x_pek;
+	int error;
+
+	axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek),
+				  GFP_KERNEL);
+	if (!axp20x_pek)
+		return -ENOMEM;
+
+	axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent);
+
+	/*
+	 * Do not register the input device if there is an "INTCFD9"
+	 * gpio button ACPI device, that handles the power button too,
+	 * and otherwise we end up reporting all presses twice.
+	 */
+	if (!acpi_dev_found("INTCFD9") ||
+	    !IS_ENABLED(CONFIG_INPUT_SOC_BUTTON_ARRAY)) {
+		error = axp20x_pek_probe_input_device(axp20x_pek, pdev);
+		if (error)
+			return error;
+	}
+
+	error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group);
 	if (error) {
-		axp20x_remove_sysfs_group(&pdev->dev);
-		dev_err(&pdev->dev, "Failed to add sysfs cleanup action: %d\n",
+		dev_err(&pdev->dev, "Failed to create sysfs attributes: %d\n",
 			error);
 		return error;
 	}
 
-	error = input_register_device(idev);
+	error = devm_add_action(&pdev->dev,
+				axp20x_remove_sysfs_group, &pdev->dev);
 	if (error) {
-		dev_err(axp20x->dev, "Can't register input device: %d\n",
+		axp20x_remove_sysfs_group(&pdev->dev);
+		dev_err(&pdev->dev, "Failed to add sysfs cleanup action: %d\n",
 			error);
 		return error;
 	}
diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
index 1fa85379f86c..1efcfdf9f8a8 100644
--- a/drivers/input/misc/bma150.c
+++ b/drivers/input/misc/bma150.c
@@ -70,7 +70,6 @@
 #define BMA150_CFG_5_REG	0x11
 
 #define BMA150_CHIP_ID		2
-#define BMA180_CHIP_ID		3
 #define BMA150_CHIP_ID_REG	BMA150_DATA_0_REG
 
 #define BMA150_ACC_X_LSB_REG	BMA150_DATA_2_REG
@@ -538,13 +537,8 @@ static int bma150_probe(struct i2c_client *client,
 		return -EIO;
 	}
 
-	/*
-	 * Note if the IIO CONFIG_BMA180 driver is enabled we want to fail
-	 * the probe for the bma180 as the iio driver is preferred.
-	 */
 	chip_id = i2c_smbus_read_byte_data(client, BMA150_CHIP_ID_REG);
-	if (chip_id != BMA150_CHIP_ID &&
-	    (IS_ENABLED(CONFIG_BMA180) || chip_id != BMA180_CHIP_ID)) {
+	if (chip_id != BMA150_CHIP_ID) {
 		dev_err(&client->dev, "BMA150 chip id error: %d\n", chip_id);
 		return -EINVAL;
 	}
@@ -648,9 +642,6 @@ static UNIVERSAL_DEV_PM_OPS(bma150_pm, bma150_suspend, bma150_resume, NULL);
 
 static const struct i2c_device_id bma150_id[] = {
 	{ "bma150", 0 },
-#if !IS_ENABLED(CONFIG_BMA180)
-	{ "bma180", 0 },
-#endif
 	{ "smb380", 0 },
 	{ "bma023", 0 },
 	{ }
diff --git a/drivers/input/misc/dm355evm_keys.c b/drivers/input/misc/dm355evm_keys.c
index 82e272ebc0ed..bab256ef32b9 100644
--- a/drivers/input/misc/dm355evm_keys.c
+++ b/drivers/input/misc/dm355evm_keys.c
@@ -32,7 +32,6 @@
 struct dm355evm_keys {
 	struct input_dev	*input;
 	struct device		*dev;
-	int			irq;
 };
 
 /* These initial keycodes can be remapped */
@@ -176,74 +175,49 @@ static int dm355evm_keys_probe(struct platform_device *pdev)
 {
 	struct dm355evm_keys	*keys;
 	struct input_dev	*input;
-	int			status;
+	int			irq;
+	int			error;
 
-	/* allocate instance struct and input dev */
-	keys = kzalloc(sizeof *keys, GFP_KERNEL);
-	input = input_allocate_device();
-	if (!keys || !input) {
-		status = -ENOMEM;
-		goto fail1;
-	}
+	keys = devm_kzalloc(&pdev->dev, sizeof (*keys), GFP_KERNEL);
+	if (!keys)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
+		return -ENOMEM;
 
 	keys->dev = &pdev->dev;
 	keys->input = input;
 
-	/* set up "threaded IRQ handler" */
-	status = platform_get_irq(pdev, 0);
-	if (status < 0)
-		goto fail1;
-	keys->irq = status;
-
 	input->name = "DM355 EVM Controls";
 	input->phys = "dm355evm/input0";
-	input->dev.parent = &pdev->dev;
 
 	input->id.bustype = BUS_I2C;
 	input->id.product = 0x0355;
 	input->id.version = dm355evm_msp_read(DM355EVM_MSP_FIRMREV);
 
-	status = sparse_keymap_setup(input, dm355evm_keys, NULL);
-	if (status)
-		goto fail1;
+	error = sparse_keymap_setup(input, dm355evm_keys, NULL);
+	if (error)
+		return error;
 
 	/* REVISIT:  flush the event queue? */
 
-	status = request_threaded_irq(keys->irq, NULL, dm355evm_keys_irq,
-				      IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-				      dev_name(&pdev->dev), keys);
-	if (status < 0)
-		goto fail2;
-
-	/* register */
-	status = input_register_device(input);
-	if (status < 0)
-		goto fail3;
-
-	platform_set_drvdata(pdev, keys);
-
-	return 0;
-
-fail3:
-	free_irq(keys->irq, keys);
-fail2:
-	sparse_keymap_free(input);
-fail1:
-	input_free_device(input);
-	kfree(keys);
-	dev_err(&pdev->dev, "can't register, err %d\n", status);
-
-	return status;
-}
+	/* set up "threaded IRQ handler" */
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
 
-static int dm355evm_keys_remove(struct platform_device *pdev)
-{
-	struct dm355evm_keys	*keys = platform_get_drvdata(pdev);
+	error = devm_request_threaded_irq(&pdev->dev, irq,
+					  NULL, dm355evm_keys_irq,
+					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					  dev_name(&pdev->dev), keys);
+	if (error)
+		return error;
 
-	free_irq(keys->irq, keys);
-	sparse_keymap_free(keys->input);
-	input_unregister_device(keys->input);
-	kfree(keys);
+	/* register */
+	error = input_register_device(input);
+	if (error)
+		return error;
 
 	return 0;
 }
@@ -259,7 +233,6 @@ static int dm355evm_keys_remove(struct platform_device *pdev)
  */
 static struct platform_driver dm355evm_keys_driver = {
 	.probe		= dm355evm_keys_probe,
-	.remove		= dm355evm_keys_remove,
 	.driver		= {
 		.name	= "dm355evm_keys",
 	},
diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
index fb089d36c0d6..17eb84ab4c0b 100644
--- a/drivers/input/misc/drv260x.c
+++ b/drivers/input/misc/drv260x.c
@@ -652,7 +652,6 @@ static const struct i2c_device_id drv260x_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, drv260x_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id drv260x_of_match[] = {
 	{ .compatible = "ti,drv2604", },
 	{ .compatible = "ti,drv2604l", },
@@ -661,13 +660,12 @@ static const struct of_device_id drv260x_of_match[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(of, drv260x_of_match);
-#endif
 
 static struct i2c_driver drv260x_driver = {
 	.probe		= drv260x_probe,
 	.driver		= {
 		.name	= "drv260x-haptics",
-		.of_match_table = of_match_ptr(drv260x_of_match),
+		.of_match_table = drv260x_of_match,
 		.pm	= &drv260x_pm_ops,
 	},
 	.id_table = drv260x_id,
diff --git a/drivers/input/misc/pm8xxx-vibrator.c b/drivers/input/misc/pm8xxx-vibrator.c
index 5113877153d7..7dd1c1fbe42a 100644
--- a/drivers/input/misc/pm8xxx-vibrator.c
+++ b/drivers/input/misc/pm8xxx-vibrator.c
@@ -10,19 +10,15 @@
  * GNU General Public License for more details.
  */
 
-#include <linux/module.h>
-#include <linux/kernel.h>
 #include <linux/errno.h>
-#include <linux/platform_device.h>
 #include <linux/input.h>
-#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
 #include <linux/regmap.h>
-
-#define VIB_DRV			0x4A
-
-#define VIB_DRV_SEL_MASK	0xf8
-#define VIB_DRV_SEL_SHIFT	0x03
-#define VIB_DRV_EN_MANUAL_MASK	0xfc
+#include <linux/slab.h>
 
 #define VIB_MAX_LEVEL_mV	(3100)
 #define VIB_MIN_LEVEL_mV	(1200)
@@ -30,20 +26,48 @@
 
 #define MAX_FF_SPEED		0xff
 
+struct pm8xxx_regs {
+	unsigned int enable_addr;
+	unsigned int enable_mask;
+
+	unsigned int drv_addr;
+	unsigned int drv_mask;
+	unsigned int drv_shift;
+	unsigned int drv_en_manual_mask;
+};
+
+static const struct pm8xxx_regs pm8058_regs = {
+	.drv_addr = 0x4A,
+	.drv_mask = 0xf8,
+	.drv_shift = 3,
+	.drv_en_manual_mask = 0xfc,
+};
+
+static struct pm8xxx_regs pm8916_regs = {
+	.enable_addr = 0xc046,
+	.enable_mask = BIT(7),
+	.drv_addr = 0xc041,
+	.drv_mask = 0x1F,
+	.drv_shift = 0,
+	.drv_en_manual_mask = 0,
+};
+
 /**
  * struct pm8xxx_vib - structure to hold vibrator data
  * @vib_input_dev: input device supporting force feedback
  * @work: work structure to set the vibration parameters
  * @regmap: regmap for register read/write
+ * @regs: registers' info
  * @speed: speed of vibration set from userland
  * @active: state of vibrator
  * @level: level of vibration to set in the chip
- * @reg_vib_drv: VIB_DRV register value
+ * @reg_vib_drv: regs->drv_addr register value
  */
 struct pm8xxx_vib {
 	struct input_dev *vib_input_dev;
 	struct work_struct work;
 	struct regmap *regmap;
+	const struct pm8xxx_regs *regs;
 	int speed;
 	int level;
 	bool active;
@@ -59,18 +83,24 @@ static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
 {
 	int rc;
 	unsigned int val = vib->reg_vib_drv;
+	const struct pm8xxx_regs *regs = vib->regs;
 
 	if (on)
-		val |= ((vib->level << VIB_DRV_SEL_SHIFT) & VIB_DRV_SEL_MASK);
+		val |= (vib->level << regs->drv_shift) & regs->drv_mask;
 	else
-		val &= ~VIB_DRV_SEL_MASK;
+		val &= ~regs->drv_mask;
 
-	rc = regmap_write(vib->regmap, VIB_DRV, val);
+	rc = regmap_write(vib->regmap, regs->drv_addr, val);
 	if (rc < 0)
 		return rc;
 
 	vib->reg_vib_drv = val;
-	return 0;
+
+	if (regs->enable_mask)
+		rc = regmap_update_bits(vib->regmap, regs->enable_addr,
+					on ? regs->enable_mask : 0, val);
+
+	return rc;
 }
 
 /**
@@ -80,10 +110,11 @@ static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
 static void pm8xxx_work_handler(struct work_struct *work)
 {
 	struct pm8xxx_vib *vib = container_of(work, struct pm8xxx_vib, work);
+	const struct pm8xxx_regs *regs = vib->regs;
 	int rc;
 	unsigned int val;
 
-	rc = regmap_read(vib->regmap, VIB_DRV, &val);
+	rc = regmap_read(vib->regmap, regs->drv_addr, &val);
 	if (rc < 0)
 		return;
 
@@ -147,6 +178,7 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
 	struct input_dev *input_dev;
 	int error;
 	unsigned int val;
+	const struct pm8xxx_regs *regs;
 
 	vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);
 	if (!vib)
@@ -163,16 +195,19 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
 	INIT_WORK(&vib->work, pm8xxx_work_handler);
 	vib->vib_input_dev = input_dev;
 
+	regs = of_device_get_match_data(&pdev->dev);
+
 	/* operate in manual mode */
-	error = regmap_read(vib->regmap, VIB_DRV, &val);
+	error = regmap_read(vib->regmap, regs->drv_addr, &val);
 	if (error < 0)
 		return error;
 
-	val &= ~VIB_DRV_EN_MANUAL_MASK;
-	error = regmap_write(vib->regmap, VIB_DRV, val);
+	val &= regs->drv_en_manual_mask;
+	error = regmap_write(vib->regmap, regs->drv_addr, val);
 	if (error < 0)
 		return error;
 
+	vib->regs = regs;
 	vib->reg_vib_drv = val;
 
 	input_dev->name = "pm8xxx_vib_ffmemless";
@@ -212,8 +247,9 @@ static int __maybe_unused pm8xxx_vib_suspend(struct device *dev)
 static SIMPLE_DEV_PM_OPS(pm8xxx_vib_pm_ops, pm8xxx_vib_suspend, NULL);
 
 static const struct of_device_id pm8xxx_vib_id_table[] = {
-	{ .compatible = "qcom,pm8058-vib" },
-	{ .compatible = "qcom,pm8921-vib" },
+	{ .compatible = "qcom,pm8058-vib", .data = &pm8058_regs },
+	{ .compatible = "qcom,pm8921-vib", .data = &pm8058_regs },
+	{ .compatible = "qcom,pm8916-vib", .data = &pm8916_regs },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, pm8xxx_vib_id_table);
diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
index e53801dbd560..edca0d737750 100644
--- a/drivers/input/misc/pwm-beeper.c
+++ b/drivers/input/misc/pwm-beeper.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/pwm.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
@@ -29,6 +30,7 @@ struct pwm_beeper {
 	struct regulator *amplifier;
 	struct work_struct work;
 	unsigned long period;
+	unsigned int bell_frequency;
 	bool suspended;
 	bool amplifier_on;
 };
@@ -94,7 +96,7 @@ static int pwm_beeper_event(struct input_dev *input,
 
 	switch (code) {
 	case SND_BELL:
-		value = value ? 1000 : 0;
+		value = value ? beeper->bell_frequency : 0;
 		break;
 	case SND_TONE:
 		break;
@@ -131,6 +133,7 @@ static int pwm_beeper_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct pwm_beeper *beeper;
 	struct pwm_state state;
+	u32 bell_frequency;
 	int error;
 
 	beeper = devm_kzalloc(dev, sizeof(*beeper), GFP_KERNEL);
@@ -167,6 +170,16 @@ static int pwm_beeper_probe(struct platform_device *pdev)
 
 	INIT_WORK(&beeper->work, pwm_beeper_work);
 
+	error = device_property_read_u32(dev, "beeper-hz", &bell_frequency);
+	if (error) {
+		bell_frequency = 1000;
+		dev_dbg(dev,
+			"failed to parse 'beeper-hz' property, using default: %uHz\n",
+			bell_frequency);
+	}
+
+	beeper->bell_frequency = bell_frequency;
+
 	beeper->input = devm_input_allocate_device(dev);
 	if (!beeper->input) {
 		dev_err(dev, "Failed to allocate input device\n");
diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
index ddb2f22fca7a..f210a3322559 100644
--- a/drivers/input/misc/soc_button_array.c
+++ b/drivers/input/misc/soc_button_array.c
@@ -20,13 +20,6 @@
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
 
-/*
- * Definition of buttons on the tablet. The ACPI index of each button
- * is defined in section 2.8.7.2 of "Windows ACPI Design Guide for SoC
- * Platforms"
- */
-#define MAX_NBUTTONS	5
-
 struct soc_button_info {
 	const char *name;
 	int acpi_index;
@@ -55,7 +48,7 @@ static int soc_button_lookup_gpio(struct device *dev, int acpi_index)
 	struct gpio_desc *desc;
 	int gpio;
 
-	desc = gpiod_get_index(dev, KBUILD_MODNAME, acpi_index, GPIOD_ASIS);
+	desc = gpiod_get_index(dev, NULL, acpi_index, GPIOD_ASIS);
 	if (IS_ERR(desc))
 		return PTR_ERR(desc);
 
@@ -79,14 +72,19 @@ soc_button_device_create(struct platform_device *pdev,
 	int gpio;
 	int error;
 
+	for (info = button_info; info->name; info++)
+		if (info->autorepeat == autorepeat)
+			n_buttons++;
+
 	gpio_keys_pdata = devm_kzalloc(&pdev->dev,
 				       sizeof(*gpio_keys_pdata) +
-					sizeof(*gpio_keys) * MAX_NBUTTONS,
+					sizeof(*gpio_keys) * n_buttons,
 				       GFP_KERNEL);
 	if (!gpio_keys_pdata)
 		return ERR_PTR(-ENOMEM);
 
 	gpio_keys = (void *)(gpio_keys_pdata + 1);
+	n_buttons = 0;
 
 	for (info = button_info; info->name; info++) {
 		if (info->autorepeat != autorepeat)
@@ -140,6 +138,153 @@ err_free_mem:
 	return ERR_PTR(error);
 }
 
+static int soc_button_get_acpi_object_int(const union acpi_object *obj)
+{
+	if (obj->type != ACPI_TYPE_INTEGER)
+		return -1;
+
+	return obj->integer.value;
+}
+
+/* Parse a single ACPI0011 _DSD button descriptor */
+static int soc_button_parse_btn_desc(struct device *dev,
+				     const union acpi_object *desc,
+				     int collection_uid,
+				     struct soc_button_info *info)
+{
+	int upage, usage;
+
+	if (desc->type != ACPI_TYPE_PACKAGE ||
+	    desc->package.count != 5 ||
+	    /* First byte should be 1 (control) */
+	    soc_button_get_acpi_object_int(&desc->package.elements[0]) != 1 ||
+	    /* Third byte should be collection uid */
+	    soc_button_get_acpi_object_int(&desc->package.elements[2]) !=
+							    collection_uid) {
+		dev_err(dev, "Invalid ACPI Button Descriptor\n");
+		return -ENODEV;
+	}
+
+	info->event_type = EV_KEY;
+	info->acpi_index =
+		soc_button_get_acpi_object_int(&desc->package.elements[1]);
+	upage = soc_button_get_acpi_object_int(&desc->package.elements[3]);
+	usage = soc_button_get_acpi_object_int(&desc->package.elements[4]);
+
+	/*
+	 * The UUID: fa6bd625-9ce8-470d-a2c7-b3ca36c4282e descriptors use HID
+	 * usage page and usage codes, but otherwise the device is not HID
+	 * compliant: it uses one irq per button instead of generating HID
+	 * input reports and some buttons should generate wakeups where as
+	 * others should not, so we cannot use the HID subsystem.
+	 *
+	 * Luckily all devices only use a few usage page + usage combinations,
+	 * so we can simply check for the known combinations here.
+	 */
+	if (upage == 0x01 && usage == 0x81) {
+		info->name = "power";
+		info->event_code = KEY_POWER;
+		info->wakeup = true;
+	} else if (upage == 0x07 && usage == 0xe3) {
+		info->name = "home";
+		info->event_code = KEY_LEFTMETA;
+		info->wakeup = true;
+	} else if (upage == 0x0c && usage == 0xe9) {
+		info->name = "volume_up";
+		info->event_code = KEY_VOLUMEUP;
+		info->autorepeat = true;
+	} else if (upage == 0x0c && usage == 0xea) {
+		info->name = "volume_down";
+		info->event_code = KEY_VOLUMEDOWN;
+		info->autorepeat = true;
+	} else {
+		dev_warn(dev, "Unknown button index %d upage %02x usage %02x, ignoring\n",
+			 info->acpi_index, upage, usage);
+		info->name = "unknown";
+		info->event_code = KEY_RESERVED;
+	}
+
+	return 0;
+}
+
+/* ACPI0011 _DSD btns descriptors UUID: fa6bd625-9ce8-470d-a2c7-b3ca36c4282e */
+static const u8 btns_desc_uuid[16] = {
+	0x25, 0xd6, 0x6b, 0xfa, 0xe8, 0x9c, 0x0d, 0x47,
+	0xa2, 0xc7, 0xb3, 0xca, 0x36, 0xc4, 0x28, 0x2e
+};
+
+/* Parse ACPI0011 _DSD button descriptors */
+static struct soc_button_info *soc_button_get_button_info(struct device *dev)
+{
+	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
+	const union acpi_object *desc, *el0, *uuid, *btns_desc = NULL;
+	struct soc_button_info *button_info;
+	acpi_status status;
+	int i, btn, collection_uid = -1;
+
+	status = acpi_evaluate_object_typed(ACPI_HANDLE(dev), "_DSD", NULL,
+					    &buf, ACPI_TYPE_PACKAGE);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "ACPI _DSD object not found\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	/* Look for the Button Descriptors UUID */
+	desc = buf.pointer;
+	for (i = 0; (i + 1) < desc->package.count; i += 2) {
+		uuid = &desc->package.elements[i];
+
+		if (uuid->type != ACPI_TYPE_BUFFER ||
+		    uuid->buffer.length != 16 ||
+		    desc->package.elements[i + 1].type != ACPI_TYPE_PACKAGE) {
+			break;
+		}
+
+		if (memcmp(uuid->buffer.pointer, btns_desc_uuid, 16) == 0) {
+			btns_desc = &desc->package.elements[i + 1];
+			break;
+		}
+	}
+
+	if (!btns_desc) {
+		dev_err(dev, "ACPI Button Descriptors not found\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	/* The first package describes the collection */
+	el0 = &btns_desc->package.elements[0];
+	if (el0->type == ACPI_TYPE_PACKAGE &&
+	    el0->package.count == 5 &&
+	    /* First byte should be 0 (collection) */
+	    soc_button_get_acpi_object_int(&el0->package.elements[0]) == 0 &&
+	    /* Third byte should be 0 (top level collection) */
+	    soc_button_get_acpi_object_int(&el0->package.elements[2]) == 0) {
+		collection_uid = soc_button_get_acpi_object_int(
+						&el0->package.elements[1]);
+	}
+	if (collection_uid == -1) {
+		dev_err(dev, "Invalid Button Collection Descriptor\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	/* There are package.count - 1 buttons + 1 terminating empty entry */
+	button_info = devm_kcalloc(dev, btns_desc->package.count,
+				   sizeof(*button_info), GFP_KERNEL);
+	if (!button_info)
+		return ERR_PTR(-ENOMEM);
+
+	/* Parse the button descriptors */
+	for (i = 1, btn = 0; i < btns_desc->package.count; i++, btn++) {
+		if (soc_button_parse_btn_desc(dev,
+					      &btns_desc->package.elements[i],
+					      collection_uid,
+					      &button_info[btn]))
+			return ERR_PTR(-ENODEV);
+	}
+
+	return button_info;
+}
+
 static int soc_button_remove(struct platform_device *pdev)
 {
 	struct soc_button_data *priv = platform_get_drvdata(pdev);
@@ -167,9 +312,15 @@ static int soc_button_probe(struct platform_device *pdev)
 	if (!id)
 		return -ENODEV;
 
-	button_info = (struct soc_button_info *)id->driver_data;
+	if (!id->driver_data) {
+		button_info = soc_button_get_button_info(dev);
+		if (IS_ERR(button_info))
+			return PTR_ERR(button_info);
+	} else {
+		button_info = (struct soc_button_info *)id->driver_data;
+	}
 
-	if (gpiod_count(dev, KBUILD_MODNAME) <= 0) {
+	if (gpiod_count(dev, NULL) <= 0) {
 		dev_dbg(dev, "no GPIO attached, ignoring...\n");
 		return -ENODEV;
 	}
@@ -197,9 +348,17 @@ static int soc_button_probe(struct platform_device *pdev)
 	if (!priv->children[0] && !priv->children[1])
 		return -ENODEV;
 
+	if (!id->driver_data)
+		devm_kfree(dev, button_info);
+
 	return 0;
 }
 
+/*
+ * Definition of buttons on the tablet. The ACPI index of each button
+ * is defined in section 2.8.7.2 of "Windows ACPI Design Guide for SoC
+ * Platforms"
+ */
 static struct soc_button_info soc_button_PNP0C40[] = {
 	{ "power", 0, EV_KEY, KEY_POWER, false, true },
 	{ "home", 1, EV_KEY, KEY_LEFTMETA, false, true },
@@ -211,6 +370,7 @@ static struct soc_button_info soc_button_PNP0C40[] = {
 
 static const struct acpi_device_id soc_button_acpi_match[] = {
 	{ "PNP0C40", (unsigned long)soc_button_PNP0C40 },
+	{ "ACPI0011", 0 },
 	{ }
 };
 
diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c
index 54162d2cbcfc..1c13005b228f 100644
--- a/drivers/input/misc/twl4030-pwrbutton.c
+++ b/drivers/input/misc/twl4030-pwrbutton.c
@@ -64,13 +64,12 @@ static int twl4030_pwrbutton_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	pwr->evbit[0] = BIT_MASK(EV_KEY);
-	pwr->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+	input_set_capability(pwr, EV_KEY, KEY_POWER);
 	pwr->name = "twl4030_pwrbutton";
 	pwr->phys = "twl4030_pwrbutton/input0";
 	pwr->dev.parent = &pdev->dev;
 
-	err = devm_request_threaded_irq(&pwr->dev, irq, NULL, powerbutton_irq,
+	err = devm_request_threaded_irq(&pdev->dev, irq, NULL, powerbutton_irq,
 			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
 			IRQF_ONESHOT,
 			"twl4030_pwrbutton", pwr);
diff --git a/drivers/input/misc/wistron_btns.c b/drivers/input/misc/wistron_btns.c
index e25f87ba19f6..43e67f546366 100644
--- a/drivers/input/misc/wistron_btns.c
+++ b/drivers/input/misc/wistron_btns.c
@@ -1243,12 +1243,10 @@ static int setup_input_dev(void)
 
 	error = input_register_polled_device(wistron_idev);
 	if (error)
-		goto err_free_keymap;
+		goto err_free_dev;
 
 	return 0;
 
- err_free_keymap:
-	sparse_keymap_free(input_dev);
  err_free_dev:
 	input_free_polled_device(wistron_idev);
 	return error;
@@ -1300,7 +1298,6 @@ static int wistron_remove(struct platform_device *dev)
 {
 	wistron_led_remove();
 	input_unregister_polled_device(wistron_idev);
-	sparse_keymap_free(wistron_idev->input);
 	input_free_polled_device(wistron_idev);
 	bios_detach();
 
diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c
index 3900875dec10..690148f9940e 100644
--- a/drivers/input/misc/xen-kbdfront.c
+++ b/drivers/input/misc/xen-kbdfront.c
@@ -41,6 +41,12 @@ struct xenkbd_info {
 	char phys[32];
 };
 
+enum { KPARAM_X, KPARAM_Y, KPARAM_CNT };
+static int ptr_size[KPARAM_CNT] = { XENFB_WIDTH, XENFB_HEIGHT };
+module_param_array(ptr_size, int, NULL, 0444);
+MODULE_PARM_DESC(ptr_size,
+	"Pointing device width, height in pixels (default 800,600)");
+
 static int xenkbd_remove(struct xenbus_device *);
 static int xenkbd_connect_backend(struct xenbus_device *, struct xenkbd_info *);
 static void xenkbd_disconnect_backend(struct xenkbd_info *);
@@ -84,8 +90,8 @@ static irqreturn_t input_handler(int rq, void *dev_id)
 				input_report_key(dev, event->key.keycode,
 						 event->key.pressed);
 			else
-				pr_warning("unhandled keycode 0x%x\n",
-					   event->key.keycode);
+				pr_warn("unhandled keycode 0x%x\n",
+					event->key.keycode);
 			break;
 		case XENKBD_TYPE_POS:
 			input_report_abs(dev, ABS_X, event->pos.abs_x);
@@ -128,12 +134,17 @@ static int xenkbd_probe(struct xenbus_device *dev,
 	if (!info->page)
 		goto error_nomem;
 
+	/* Set input abs params to match backend screen res */
 	abs = xenbus_read_unsigned(dev->otherend, "feature-abs-pointer", 0);
+	ptr_size[KPARAM_X] = xenbus_read_unsigned(dev->otherend, "width",
+						  ptr_size[KPARAM_X]);
+	ptr_size[KPARAM_Y] = xenbus_read_unsigned(dev->otherend, "height",
+						  ptr_size[KPARAM_Y]);
 	if (abs) {
 		ret = xenbus_write(XBT_NIL, dev->nodename,
 				   "request-abs-pointer", "1");
 		if (ret) {
-			pr_warning("xenkbd: can't request abs-pointer");
+			pr_warn("xenkbd: can't request abs-pointer\n");
 			abs = 0;
 		}
 	}
@@ -174,8 +185,8 @@ static int xenkbd_probe(struct xenbus_device *dev,
 
 	if (abs) {
 		__set_bit(EV_ABS, ptr->evbit);
-		input_set_abs_params(ptr, ABS_X, 0, XENFB_WIDTH, 0, 0);
-		input_set_abs_params(ptr, ABS_Y, 0, XENFB_HEIGHT, 0, 0);
+		input_set_abs_params(ptr, ABS_X, 0, ptr_size[KPARAM_X], 0, 0);
+		input_set_abs_params(ptr, ABS_Y, 0, ptr_size[KPARAM_Y], 0, 0);
 	} else {
 		input_set_capability(ptr, EV_REL, REL_X);
 		input_set_capability(ptr, EV_REL, REL_Y);
@@ -309,9 +320,6 @@ static void xenkbd_disconnect_backend(struct xenkbd_info *info)
 static void xenkbd_backend_changed(struct xenbus_device *dev,
 				   enum xenbus_state backend_state)
 {
-	struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
-	int ret, val;
-
 	switch (backend_state) {
 	case XenbusStateInitialising:
 	case XenbusStateInitialised:
@@ -321,15 +329,6 @@ static void xenkbd_backend_changed(struct xenbus_device *dev,
 		break;
 
 	case XenbusStateInitWait:
-InitWait:
-		if (xenbus_read_unsigned(info->xbdev->otherend,
-					 "feature-abs-pointer", 0)) {
-			ret = xenbus_write(XBT_NIL, info->xbdev->nodename,
-					   "request-abs-pointer", "1");
-			if (ret)
-				pr_warning("xenkbd: can't request abs-pointer");
-		}
-
 		xenbus_switch_state(dev, XenbusStateConnected);
 		break;
 
@@ -340,17 +339,7 @@ InitWait:
 		 * get Connected twice here.
 		 */
 		if (dev->state != XenbusStateConnected)
-			goto InitWait; /* no InitWait seen yet, fudge it */
-
-		/* Set input abs params to match backend screen res */
-		if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
-				 "width", "%d", &val) > 0)
-			input_set_abs_params(info->ptr, ABS_X, 0, val, 0, 0);
-
-		if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
-				 "height", "%d", &val) > 0)
-			input_set_abs_params(info->ptr, ABS_Y, 0, val, 0, 0);
-
+			xenbus_switch_state(dev, XenbusStateConnected);
 		break;
 
 	case XenbusStateClosed:
diff --git a/drivers/input/misc/yealink.h b/drivers/input/misc/yealink.h
index 1e0f52397010..934c247f8a0f 100644
--- a/drivers/input/misc/yealink.h
+++ b/drivers/input/misc/yealink.h
@@ -28,7 +28,7 @@
 struct yld_ctl_packet {
 	u8	cmd;		/* command code, see below */
 	u8	size;		/* 1-11, size of used data bytes. */
-	u16	offset;		/* internal packet offset */
+	__be16	offset;		/* internal packet offset */
 	u8	data[11];
 	s8	sum;		/* negative sum of 15 preceding bytes */
 } __attribute__ ((packed));