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

Pull input updates from Dmitry Torokhov:

 - a new GPIO bit-banging driver implementing PS/2 protocol

 - a new power key driver for Rockchip RK805 PMIC

 - bunch of patches constifying various device ID structures

 - Elan I2C touchpad driver now supports devices with 2 buttons

 - other assorted fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (76 commits)
  Input: byd - make array seq static, reduces object code size
  Input: xilinx_ps2 - fix multiline comment style
  Input: pxa27x_keypad - handle return value of clk_prepare_enable
  Input: tegra-kbc - handle return value of clk_prepare_enable
  Input: PS/2 gpio bit banging driver for serio bus
  Input: xen-kbdfront - enable auto repeat for xen keyboard frontend driver
  Input: ambakmi - constify amba_id
  Input: atmel_mxt_ts - add support for reset line
  Input: atmel_mxt_ts - use more managed resources
  Input: wacom_w8001 - constify serio_device_id
  Input: tsc40 - constify serio_device_id
  Input: touchwin - constify serio_device_id
  Input: touchright - constify serio_device_id
  Input: touchit213 - constify serio_device_id
  Input: penmount - constify serio_device_id
  Input: mtouch - constify serio_device_id
  Input: inexio - constify serio_device_id
  Input: hampshire - constify serio_device_id
  Input: gunze - constify serio_device_id
  Input: fujitsu_ts - constify serio_device_id
  ...

80 files changed, 947 insertions, 190 deletions

diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
index 1852906517ab..23e3abc3fdef 100644
--- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
+++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
@@ -22,6 +22,8 @@ Optional properties for main touchpad device:
     experiment to determine which bit corresponds to which input. Use
     KEY_RESERVED for unused padding values.
 
+- reset-gpios: GPIO specifier for the touchscreen's reset pin (active low)
+
 Example:
 
 	touch@4b {
diff --git a/Documentation/devicetree/bindings/serio/ps2-gpio.txt b/Documentation/devicetree/bindings/serio/ps2-gpio.txt
new file mode 100644
index 000000000000..7b7bc9cdf986
--- /dev/null
+++ b/Documentation/devicetree/bindings/serio/ps2-gpio.txt
@@ -0,0 +1,23 @@
+Device-Tree binding for ps/2 gpio device
+
+Required properties:
+	- compatible = "ps2-gpio"
+	- data-gpios: the data pin
+	- clk-gpios: the clock pin
+	- interrupts: Should trigger on the falling edge of the clock line.
+
+Optional properties:
+	- write-enable: Indicates whether write function is provided
+	to serio device. Possibly providing the write fn will not work, because
+	of the tough timing requirements.
+
+Example nodes:
+
+ps2@0 {
+	compatible = "ps2-gpio";
+	interrupt-parent = <&gpio>;
+	interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
+	data-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
+	clk-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
+	write-enable;
+};
diff --git a/Documentation/gpio/drivers-on-gpio.txt b/Documentation/gpio/drivers-on-gpio.txt
index 306513251713..9a78d385b92e 100644
--- a/Documentation/gpio/drivers-on-gpio.txt
+++ b/Documentation/gpio/drivers-on-gpio.txt
@@ -84,6 +84,11 @@ hardware descriptions such as device tree or ACPI:
   NAND flash MTD subsystem and provides chip access and partition parsing like
   any other NAND driving hardware.
 
+- ps2-gpio: drivers/input/serio/ps2-gpio.c is used to drive a PS/2 (IBM) serio
+  bus, data and clock line, by bit banging two GPIO lines. It will appear as
+  any other serio bus to the system and makes it possible to connect drivers
+  for e.g. keyboards and other PS/2 protocol based devices.
+
 Apart from this there are special GPIO drivers in subsystems like MMC/SD to
 read card detect and write protect GPIO lines, and in the TTY serial subsystem
 to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index e2c97728b3c6..9d662fed03ec 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -377,7 +377,7 @@ static struct gpiod_lookup_table raumfeld_rotary_gpios_table = {
 	},
 };
 
-static struct property_entry raumfeld_rotary_properties[] = {
+static const struct property_entry raumfeld_rotary_properties[] __initconst = {
 	PROPERTY_ENTRY_INTEGER("rotary-encoder,steps-per-period", u32, 24),
 	PROPERTY_ENTRY_INTEGER("linux,axis",			  u32, REL_X),
 	PROPERTY_ENTRY_INTEGER("rotary-encoder,relative_axis",	  u32, 1),
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 7e6842bd525c..d268fdc23c64 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1398,7 +1398,7 @@ static struct attribute *input_dev_attrs[] = {
 	NULL
 };
 
-static struct attribute_group input_dev_attr_group = {
+static const struct attribute_group input_dev_attr_group = {
 	.attrs	= input_dev_attrs,
 };
 
@@ -1425,7 +1425,7 @@ static struct attribute *input_dev_id_attrs[] = {
 	NULL
 };
 
-static struct attribute_group input_dev_id_attr_group = {
+static const struct attribute_group input_dev_id_attr_group = {
 	.name	= "id",
 	.attrs	= input_dev_id_attrs,
 };
@@ -1495,7 +1495,7 @@ static struct attribute *input_dev_caps_attrs[] = {
 	NULL
 };
 
-static struct attribute_group input_dev_caps_attr_group = {
+static const struct attribute_group input_dev_caps_attr_group = {
 	.name	= "capabilities",
 	.attrs	= input_dev_caps_attrs,
 };
diff --git a/drivers/input/joystick/iforce/iforce-serio.c b/drivers/input/joystick/iforce/iforce-serio.c
index 46d5041d2d9d..154e827b559b 100644
--- a/drivers/input/joystick/iforce/iforce-serio.c
+++ b/drivers/input/joystick/iforce/iforce-serio.c
@@ -164,7 +164,7 @@ static void iforce_serio_disconnect(struct serio *serio)
 	kfree(iforce);
 }
 
-static struct serio_device_id iforce_serio_ids[] = {
+static const struct serio_device_id iforce_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_IFORCE,
diff --git a/drivers/input/joystick/iforce/iforce-usb.c b/drivers/input/joystick/iforce/iforce-usb.c
index db64adfbe1af..e8724f1a4a25 100644
--- a/drivers/input/joystick/iforce/iforce-usb.c
+++ b/drivers/input/joystick/iforce/iforce-usb.c
@@ -209,7 +209,7 @@ static void iforce_usb_disconnect(struct usb_interface *intf)
 	kfree(iforce);
 }
 
-static struct usb_device_id iforce_usb_ids [] = {
+static const struct usb_device_id iforce_usb_ids[] = {
 	{ USB_DEVICE(0x044f, 0xa01c) },		/* Thrustmaster Motor Sport GT */
 	{ USB_DEVICE(0x046d, 0xc281) },		/* Logitech WingMan Force */
 	{ USB_DEVICE(0x046d, 0xc291) },		/* Logitech WingMan Formula Force */
diff --git a/drivers/input/joystick/magellan.c b/drivers/input/joystick/magellan.c
index c5358ba1f571..a9d0e3edca94 100644
--- a/drivers/input/joystick/magellan.c
+++ b/drivers/input/joystick/magellan.c
@@ -198,7 +198,7 @@ static int magellan_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id magellan_serio_ids[] = {
+static const struct serio_device_id magellan_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_MAGELLAN,
diff --git a/drivers/input/joystick/spaceball.c b/drivers/input/joystick/spaceball.c
index f4445a4e8d6a..e9712a1b7cad 100644
--- a/drivers/input/joystick/spaceball.c
+++ b/drivers/input/joystick/spaceball.c
@@ -272,7 +272,7 @@ static int spaceball_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id spaceball_serio_ids[] = {
+static const struct serio_device_id spaceball_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_SPACEBALL,
diff --git a/drivers/input/joystick/spaceorb.c b/drivers/input/joystick/spaceorb.c
index f2667820e8c5..05da0ed514e2 100644
--- a/drivers/input/joystick/spaceorb.c
+++ b/drivers/input/joystick/spaceorb.c
@@ -213,7 +213,7 @@ static int spaceorb_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id spaceorb_serio_ids[] = {
+static const struct serio_device_id spaceorb_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_SPACEORB,
diff --git a/drivers/input/joystick/stinger.c b/drivers/input/joystick/stinger.c
index 099c6d7b5e08..cb10e7b097ae 100644
--- a/drivers/input/joystick/stinger.c
+++ b/drivers/input/joystick/stinger.c
@@ -184,7 +184,7 @@ static int stinger_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id stinger_serio_ids[] = {
+static const struct serio_device_id stinger_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_STINGER,
diff --git a/drivers/input/joystick/twidjoy.c b/drivers/input/joystick/twidjoy.c
index 7f7e5ab3f9e3..e60cb004cb8c 100644
--- a/drivers/input/joystick/twidjoy.c
+++ b/drivers/input/joystick/twidjoy.c
@@ -233,7 +233,7 @@ static int twidjoy_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id twidjoy_serio_ids[] = {
+static const struct serio_device_id twidjoy_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_TWIDJOY,
diff --git a/drivers/input/joystick/warrior.c b/drivers/input/joystick/warrior.c
index e13a9144a25d..ef5391ba4470 100644
--- a/drivers/input/joystick/warrior.c
+++ b/drivers/input/joystick/warrior.c
@@ -193,7 +193,7 @@ static int warrior_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id warrior_serio_ids[] = {
+static const struct serio_device_id warrior_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_WARRIOR,
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index ca0e19ae7a90..f8e34ef643c7 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -408,7 +408,7 @@ static const signed short xpad_abs_triggers[] = {
 #define XPAD_XBOXONE_VENDOR(vend) \
 	{ XPAD_XBOXONE_VENDOR_PROTOCOL(vend, 208) }
 
-static struct usb_device_id xpad_table[] = {
+static const struct usb_device_id xpad_table[] = {
 	{ USB_INTERFACE_INFO('X', 'B', 0) },	/* X-Box USB-IF not approved class */
 	XPAD_XBOX360_VENDOR(0x044f),		/* Thrustmaster X-Box 360 controllers */
 	XPAD_XBOX360_VENDOR(0x045e),		/* Microsoft X-Box 360 controllers */
diff --git a/drivers/input/joystick/zhenhua.c b/drivers/input/joystick/zhenhua.c
index 4a8258bf13fd..5c6d5de743f1 100644
--- a/drivers/input/joystick/zhenhua.c
+++ b/drivers/input/joystick/zhenhua.c
@@ -192,7 +192,7 @@ static int zhenhua_connect(struct serio *serio, struct serio_driver *drv)
  * The serio driver structure.
  */
 
-static struct serio_device_id zhenhua_serio_ids[] = {
+static const struct serio_device_id zhenhua_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_ZHENHUA,
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index ec876b5b1382..7e75835e220f 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -1270,7 +1270,7 @@ static int atkbd_reconnect(struct serio *serio)
 	return retval;
 }
 
-static struct serio_device_id atkbd_serio_ids[] = {
+static const struct serio_device_id atkbd_serio_ids[] = {
 	{
 		.type	= SERIO_8042,
 		.proto	= SERIO_ANY,
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 0b10d4b356db..e9f0ebf3267a 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -353,7 +353,7 @@ static struct attribute *gpio_keys_attrs[] = {
 	NULL,
 };
 
-static struct attribute_group gpio_keys_attr_group = {
+static const struct attribute_group gpio_keys_attr_group = {
 	.attrs = gpio_keys_attrs,
 };
 
diff --git a/drivers/input/keyboard/hil_kbd.c b/drivers/input/keyboard/hil_kbd.c
index 5b152f25a8e1..bb29a7c9a1c0 100644
--- a/drivers/input/keyboard/hil_kbd.c
+++ b/drivers/input/keyboard/hil_kbd.c
@@ -559,7 +559,7 @@ static int hil_dev_connect(struct serio *serio, struct serio_driver *drv)
 	return error;
 }
 
-static struct serio_device_id hil_dev_ids[] = {
+static const struct serio_device_id hil_dev_ids[] = {
 	{
 		.type = SERIO_HIL_MLC,
 		.proto = SERIO_HIL,
diff --git a/drivers/input/keyboard/lkkbd.c b/drivers/input/keyboard/lkkbd.c
index 9fcd9f1d5dc8..471d53815c6d 100644
--- a/drivers/input/keyboard/lkkbd.c
+++ b/drivers/input/keyboard/lkkbd.c
@@ -707,7 +707,7 @@ static void lkkbd_disconnect(struct serio *serio)
 	kfree(lk);
 }
 
-static struct serio_device_id lkkbd_serio_ids[] = {
+static const struct serio_device_id lkkbd_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_LKKBD,
diff --git a/drivers/input/keyboard/newtonkbd.c b/drivers/input/keyboard/newtonkbd.c
index 20f044377990..fb9b8e23ab93 100644
--- a/drivers/input/keyboard/newtonkbd.c
+++ b/drivers/input/keyboard/newtonkbd.c
@@ -142,7 +142,7 @@ static void nkbd_disconnect(struct serio *serio)
 	kfree(nkbd);
 }
 
-static struct serio_device_id nkbd_serio_ids[] = {
+static const struct serio_device_id nkbd_serio_ids[] = {
 	{
 		.type	= SERIO_RS232,
 		.proto	= SERIO_NEWTON,
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 3841fa30db33..d0bdaeadf86d 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -644,9 +644,12 @@ static void pxa27x_keypad_config(struct pxa27x_keypad *keypad)
 static int pxa27x_keypad_open(struct input_dev *dev)
 {
 	struct pxa27x_keypad *keypad = input_get_drvdata(dev);
-
+	int ret;
 	/* Enable unit clock */
-	clk_prepare_enable(keypad->clk);
+	ret = clk_prepare_enable(keypad->clk);
+	if (ret)
+		return ret;
+
 	pxa27x_keypad_config(keypad);
 
 	return 0;
@@ -683,6 +686,7 @@ static int pxa27x_keypad_resume(struct device *dev)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
 	struct input_dev *input_dev = keypad->input_dev;
+	int ret = 0;
 
 	/*
 	 * If the keypad is used as wake up source, the clock is not turned
@@ -695,14 +699,15 @@ static int pxa27x_keypad_resume(struct device *dev)
 
 		if (input_dev->users) {
 			/* Enable unit clock */
-			clk_prepare_enable(keypad->clk);
-			pxa27x_keypad_config(keypad);
+			ret = clk_prepare_enable(keypad->clk);
+			if (!ret)
+				pxa27x_keypad_config(keypad);
 		}
 
 		mutex_unlock(&input_dev->mutex);
 	}
 
-	return 0;
+	return ret;
 }
 #endif
 
diff --git a/drivers/input/keyboard/stowaway.c b/drivers/input/keyboard/stowaway.c
index a6e0d565e306..8b6de9a692dc 100644
--- a/drivers/input/keyboard/stowaway.c
+++ b/drivers/input/keyboard/stowaway.c
@@ -146,7 +146,7 @@ static void skbd_disconnect(struct serio *serio)
 	kfree(skbd);
 }
 
-static struct serio_device