Merge branch 'next' into for-linus

Documentation/input/rotary-encoder.txt

+rotary-encoder - a generic driver for GPIO connected devices
+Daniel Mack <daniel@caiaq.de>, Feb 2009
+
+0. Function
+-----------
+
+Rotary encoders are devices which are connected to the CPU or other
+peripherals with two wires. The outputs are phase-shifted by 90 degrees
+and by triggering on falling and rising edges, the turn direction can
+be determined.
+
+The phase diagram of these two outputs look like this:
+
+                  _____       _____       _____
+                 |     |     |     |     |     |
+  Channel A  ____|     |_____|     |_____|     |____
+
+                 :  :  :  :  :  :  :  :  :  :  :  :
+            __       _____       _____       _____
+              |     |     |     |     |     |     |
+  Channel B   |_____|     |_____|     |_____|     |__
+
+                 :  :  :  :  :  :  :  :  :  :  :  :
+  Event          a  b  c  d  a  b  c  d  a  b  c  d
+
+                |<-------->|
+	          one step
+
+
+For more information, please see
+	http://en.wikipedia.org/wiki/Rotary_encoder
+
+
+1. Events / state machine
+-------------------------
+
+a) Rising edge on channel A, channel B in low state
+	This state is used to recognize a clockwise turn
+
+b) Rising edge on channel B, channel A in high state
+	When entering this state, the encoder is put into 'armed' state,
+	meaning that there it has seen half the way of a one-step transition.
+
+c) Falling edge on channel A, channel B in high state
+	This state is used to recognize a counter-clockwise turn
+
+d) Falling edge on channel B, channel A in low state
+	Parking position. If the encoder enters this state, a full transition
+	should have happend, unless it flipped back on half the way. The
+	'armed' state tells us about that.
+
+2. Platform requirements
+------------------------
+
+As there is no hardware dependent call in this driver, the platform it is
+used with must support gpiolib. Another requirement is that IRQs must be
+able to fire on both edges.
+
+
+3. Board integration
+--------------------
+
+To use this driver in your system, register a platform_device with the
+name 'rotary-encoder' and associate the IRQs and some specific platform
+data with it.
+
+struct rotary_encoder_platform_data is declared in
+include/linux/rotary-encoder.h and needs to be filled with the number of
+steps the encoder has and can carry information about externally inverted
+signals (because of used invertig buffer or other reasons).
+
+Because GPIO to IRQ mapping is platform specific, this information must
+be given in seperately to the driver. See the example below.
+
+---------<snip>---------
+
+/* board support file example */
+
+#include <linux/input.h>
+#include <linux/rotary_encoder.h>
+
+#define GPIO_ROTARY_A 1
+#define GPIO_ROTARY_B 2
+
+static struct rotary_encoder_platform_data my_rotary_encoder_info = {
+	.steps		= 24,
+	.axis		= ABS_X,
+	.gpio_a		= GPIO_ROTARY_A,
+	.gpio_b		= GPIO_ROTARY_B,
+	.inverted_a	= 0,
+	.inverted_b	= 0,
+};
+
+static struct platform_device rotary_encoder_device = {
+	.name		= "rotary-encoder",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &my_rotary_encoder_info,
+	}
+};
+

arch/mips/include/asm/mach-rc32434/gpio.h

@@ -80,6 +80,9 @@ struct rb532_gpio_reg {
 /* Compact Flash GPIO pin */
 #define CF_GPIO_NUM		13
 
+/* S1 button GPIO (shared with UART0_SIN) */
+#define GPIO_BTN_S1		1
+
 extern void rb532_gpio_set_ilevel(int bit, unsigned gpio);
 extern void rb532_gpio_set_istat(int bit, unsigned gpio);
 extern void rb532_gpio_set_func(unsigned gpio);

arch/mips/rb532/devices.c

@@ -200,26 +200,9 @@ static struct platform_device rb532_led = {
 	.id = -1,
 };
 
-static struct gpio_keys_button rb532_gpio_btn[] = {
-	{
-		.gpio = 1,
-		.code = BTN_0,
-		.desc = "S1",
-		.active_low = 1,
-	}
-};
-
-static struct gpio_keys_platform_data rb532_gpio_btn_data = {
-	.buttons = rb532_gpio_btn,
-	.nbuttons = ARRAY_SIZE(rb532_gpio_btn),
-};
-
 static struct platform_device rb532_button = {
-	.name 	= "gpio-keys",
+	.name	= "rb532-button",
 	.id	= -1,
-	.dev	= {
-		.platform_data = &rb532_gpio_btn_data,
-	}
 };
 
 static struct resource rb532_wdt_res[] = {

drivers/input/input.c

@@ -132,6 +132,11 @@ static void input_start_autorepeat(struct input_dev *dev, int code)
 	}
 }
 
+static void input_stop_autorepeat(struct input_dev *dev)
+{
+	del_timer(&dev->timer);
+}
+
 #define INPUT_IGNORE_EVENT	0
 #define INPUT_PASS_TO_HANDLERS	1
 #define INPUT_PASS_TO_DEVICE	2
@@ -167,6 +172,8 @@ static void input_handle_event(struct input_dev *dev,
 				__change_bit(code, dev->key);
 				if (value)
 					input_start_autorepeat(dev, code);
+				else
+					input_stop_autorepeat(dev);
 			}
 
 			disposition = INPUT_PASS_TO_HANDLERS;
@@ -737,11 +744,11 @@ static inline void input_wakeup_procfs_readers(void)
 
 static unsigned int input_proc_devices_poll(struct file *file, poll_table *wait)
 {
-	int state = input_devices_state;
-
 	poll_wait(file, &input_devices_poll_wait, wait);
-	if (state != input_devices_state)
+	if (file->f_version != input_devices_state) {
+		file->f_version = input_devices_state;
 		return POLLIN | POLLRDNORM;
+	}
 
 	return 0;
 }

drivers/input/keyboard/atkbd.c

@@ -229,7 +229,8 @@ struct atkbd {
 /*
  * System-specific ketymap fixup routine
  */
-static void (*atkbd_platform_fixup)(struct atkbd *);
+static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
+static void *atkbd_platform_fixup_data;
 
 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
 				ssize_t (*handler)(struct atkbd *, char *));
@@ -834,87 +835,64 @@ static void atkbd_disconnect(struct serio *serio)
 }
 
 /*
- * Most special keys (Fn+F?) on Dell laptops do not generate release
- * events so we have to do it ourselves.
+ * generate release events for the keycodes given in data
  */
-static void atkbd_dell_laptop_keymap_fixup(struct atkbd *atkbd)
+static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
+						const void *data)
 {
-	static const unsigned int forced_release_keys[] = {
-		0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93,
-	};
-	int i;
+	const unsigned int *keys = data;
+	unsigned int i;
 
 	if (atkbd->set == 2)
-		for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
-			__set_bit(forced_release_keys[i],
-				  atkbd->force_release_mask);
+		for (i = 0; keys[i] != -1U; i++)
+			__set_bit(keys[i], atkbd->force_release_mask);
 }
 
+/*
+ * Most special keys (Fn+F?) on Dell laptops do not generate release
+ * events so we have to do it ourselves.
+ */
+static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
+	0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
+};
+
 /*
  * Perform fixup for HP system that doesn't generate release
  * for its video switch
  */
-static void atkbd_hp_keymap_fixup(struct atkbd *atkbd)
-{
-	static const unsigned int forced_release_keys[] = {
-		0x94,
-	};
-	int i;
-
-	if (atkbd->set == 2)
-		for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
-			__set_bit(forced_release_keys[i],
-					atkbd->force_release_mask);
-}
+static unsigned int atkbd_hp_forced_release_keys[] = {
+	0x94, -1U
+};
 
 /*
  * Inventec system with broken key release on volume keys
  */
-static void atkbd_inventec_keymap_fixup(struct atkbd *atkbd)
-{
-	const unsigned int forced_release_keys[] = {
-		0xae, 0xb0,
-	};
-	int i;
-
-	if (atkbd->set == 2)
-		for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
-			__set_bit(forced_release_keys[i],
-				  atkbd->force_release_mask);
-}
+static unsigned int atkbd_inventec_forced_release_keys[] = {
+	0xae, 0xb0, -1U
+};
 
 /*
  * Perform fixup for HP Pavilion ZV6100 laptop that doesn't generate release
  * for its volume buttons
  */
-static void atkbd_hp_zv6100_keymap_fixup(struct atkbd *atkbd)
-{
-	const unsigned int forced_release_keys[] = {
-		0xae, 0xb0,
-	};
-	int i;
-
-	if (atkbd->set == 2)
-		for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
-			__set_bit(forced_release_keys[i],
-					atkbd->force_release_mask);
-}
+static unsigned int atkbd_hp_zv6100_forced_release_keys[] = {
+	0xae, 0xb0, -1U
+};
 
 /*
  * Samsung NC10 with Fn+F? key release not working
  */
-static void atkbd_samsung_keymap_fixup(struct atkbd *atkbd)
-{
-	const unsigned int forced_release_keys[] = {
-		0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9,
-	};
-	int i;
+static unsigned int atkbd_samsung_forced_release_keys[] = {
+	0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
+};
 
-	if (atkbd->set == 2)
-		for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
-			__set_bit(forced_release_keys[i],
-				  atkbd->force_release_mask);
-}
+/*
+ * The volume up and volume down special keys on a Fujitsu Amilo PA 1510 laptop
+ * do not generate release events so we have to do it ourselves.
+ */
+static unsigned int atkbd_amilo_pa1510_forced_release_keys[] = {
+	0xb0, 0xae, -1U
+};
 
 /*
  * atkbd_set_keycode_table() initializes keyboard's keycode table
@@ -967,7 +945,7 @@ static void atkbd_set_keycode_table(struct atkbd *atkbd)
  * Perform additional fixups
  */
 	if (atkbd_platform_fixup)
-		atkbd_platform_fixup(atkbd);
+		atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
 }
 
 /*
@@ -1492,9 +1470,11 @@ static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
 	return sprintf(buf, "%lu\n", atkbd->err_count);
 }
 
-static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
+static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
 {
-	atkbd_platform_fixup = id->driver_data;
+	atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
+	atkbd_platform_fixup_data = id->driver_data;
+
 	return 0;
 }
 
@@ -1505,8 +1485,8 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
 		},
-		.callback = atkbd_setup_fixup,
-		.driver_data = atkbd_dell_laptop_keymap_fixup,
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_dell_laptop_forced_release_keys,
 	},
 	{
 		.ident = "Dell Laptop",
@@ -1514,8 +1494,8 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
 		},
-		.callback = atkbd_setup_fixup,
-		.driver_data = atkbd_dell_laptop_keymap_fixup,
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_dell_laptop_forced_release_keys,
 	},
 	{
 		.ident = "HP 2133",
@@ -1523,8 +1503,8 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
 		},
-		.callback = atkbd_setup_fixup,
-		.driver_data = atkbd_hp_keymap_fixup,
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_hp_forced_release_keys,
 	},
 	{
 		.ident = "HP Pavilion ZV6100",
@@ -1532,8 +1512,8 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
 		},
-		.callback = atkbd_setup_fixup,
-		.driver_data = atkbd_hp_zv6100_keymap_fixup,
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_hp_zv6100_forced_release_keys,
 	},
 	{
 		.ident = "Inventec Symphony",
@@ -1541,8 +1521,8 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
 			DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
 		},
-		.callback = atkbd_setup_fixup,
-		.driver_data = atkbd_inventec_keymap_fixup,
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_inventec_forced_release_keys,
 	},
 	{
 		.ident = "Samsung NC10",
@@ -1550,8 +1530,17 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
 			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
 		},
-		.callback = atkbd_setup_fixup,
-		.driver_data = atkbd_samsung_keymap_fixup,
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_samsung_forced_release_keys,
+	},
+	{
+		.ident = "Fujitsu Amilo PA 1510",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
+		},
+		.callback = atkbd_setup_forced_release,
+		.driver_data = atkbd_amilo_pa1510_forced_release_keys,
 	},
 	{ }
 };

drivers/input/keyboard/bf54x-keys.c

@@ -211,8 +211,8 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev)
 
 	if (!pdata->debounce_time || pdata->debounce_time > MAX_MULT ||
 	    !pdata->coldrive_time || pdata->coldrive_time > MAX_MULT) {
-		printk(KERN_ERR DRV_NAME
-			": Invalid Debounce/Columdrive Time from pdata\n");
+		printk(KERN_WARNING DRV_NAME
+			": Invalid Debounce/Columndrive Time in platform data\n");
 		bfin_write_KPAD_MSEL(0xFF0);	/* Default MSEL	*/
 	} else {
 		bfin_write_KPAD_MSEL(

drivers/input/keyboard/hilkbd.c

@@ -198,45 +198,28 @@ static void hil_do(unsigned char cmd, unsigned char *data, unsigned int len)
 }
 
 
-/* initialise HIL */
-static int __init
-hil_keyb_init(void)
+/* initialize HIL */
+static int __devinit hil_keyb_init(void)
 {
 	unsigned char c;
 	unsigned int i, kbid;
 	wait_queue_head_t hil_wait;
 	int err;
 
-	if (hil_dev.dev) {
+	if (hil_dev.dev)
 		return -ENODEV; /* already initialized */
-	}
 
+	init_waitqueue_head(&hil_wait);
 	spin_lock_init(&hil_dev.lock);
+
 	hil_dev.dev = input_allocate_device();
 	if (!hil_dev.dev)
 		return -ENOMEM;
 
-#if defined(CONFIG_HP300)
-	if (!MACH_IS_HP300) {
-		err = -ENODEV;
-		goto err1;
-	}
-	if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
-		printk(KERN_ERR "HIL: hardware register was not found\n");
-		err = -ENODEV;
-		goto err1;
-	}
-	if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
-		printk(KERN_ERR "HIL: IOPORT region already used\n");
-		err = -EIO;
-		goto err1;
-	}
-#endif
-
 	err = request_irq(HIL_IRQ, hil_interrupt, 0, "hil", hil_dev.dev_id);
 	if (err) {
 		printk(KERN_ERR "HIL: Can't get IRQ\n");
-		goto err2;
+		goto err1;
 	}
 
 	/* Turn on interrupts */
@@ -246,11 +229,9 @@ hil_keyb_init(void)
 	hil_dev.valid = 0;	/* clear any pending data */
 	hil_do(HIL_READKBDSADR, NULL, 0);
 
-	init_waitqueue_head(&hil_wait);
-	wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3*HZ);
-	if (!hil_dev.valid) {
+	wait_event_interruptible_timeout(hil_wait, hil_dev.valid, 3 * HZ);
+	if (!hil_dev.valid)
 		printk(KERN_WARNING "HIL: timed out, assuming no keyboard present\n");
-	}
 
 	c = hil_dev.c;
 	hil_dev.valid = 0;
@@ -268,7 +249,7 @@ hil_keyb_init(void)
 
 	for (i = 0; i < HIL_KEYCODES_SET1_TBLSIZE; i++)
 		if (hphilkeyb_keycode[i] != KEY_RESERVED)
-			set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
+			__set_bit(hphilkeyb_keycode[i], hil_dev.dev->keybit);
 
 	hil_dev.dev->evbit[0]	= BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 	hil_dev.dev->ledbit[0]	= BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
@@ -287,34 +268,45 @@ hil_keyb_init(void)
 	err = input_register_device(hil_dev.dev);
 	if (err) {
 		printk(KERN_ERR "HIL: Can't register device\n");
-		goto err3;
+		goto err2;
 	}
+
 	printk(KERN_INFO "input: %s, ID %d at 0x%08lx (irq %d) found and attached\n",
 	       hil_dev.dev->name, kbid, HILBASE, HIL_IRQ);
 
 	return 0;
 
-err3:
+err2:
 	hil_do(HIL_INTOFF, NULL, 0);
-	disable_irq(HIL_IRQ);
 	free_irq(HIL_IRQ, hil_dev.dev_id);
-err2:
-#if defined(CONFIG_HP300)
-	release_region(HILBASE + HIL_DATA, 2);
 err1:
-#endif
 	input_free_device(hil_dev.dev);
 	hil_dev.dev = NULL;
 	return err;
 }
 
+static void __devexit hil_keyb_exit(void)
+{
+	if (HIL_IRQ)
+		free_irq(HIL_IRQ, hil_dev.dev_id);
+
+	/* Turn off interrupts */
+	hil_do(HIL_INTOFF, NULL, 0);
+
+	input_unregister_device(hil_dev.dev);
+	hil_dev.dev = NULL;
+}
 
 #if defined(CONFIG_PARISC)
-static int __init
-hil_init_chip(struct parisc_device *dev)
+static int __devinit hil_probe_chip(struct parisc_device *dev)
 {
+	/* Only allow one HIL keyboard */
+	if (hil_dev.dev)
+		return -ENODEV;
+
 	if (!dev->irq) {
-		printk(KERN_WARNING "HIL: IRQ not found for HIL bus at 0x%08lx\n", dev->hpa.start);
+		printk(KERN_WARNING "HIL: IRQ not found for HIL bus at 0x%p\n",
+			(void *)dev->hpa.start);
 		return -ENODEV;
 	}
 
@@ -327,51 +319,79 @@ hil_init_chip(struct parisc_device *dev)
 	return hil_keyb_init();
 }
 
+static int __devexit hil_remove_chip(struct parisc_device *dev)
+{
+	hil_keyb_exit();
+
+	return 0;
+}
+
 static struct parisc_device_id hil_tbl[] = {
 	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00073 },
 	{ 0, }
 };
 
+#if 0
+/* Disabled to avoid conflicts with the HP SDC HIL drivers */
 MODULE_DEVICE_TABLE(parisc, hil_tbl);
+#endif
 
 static struct parisc_driver hil_driver = {
-	.name =		"hil",
-	.id_table =	hil_tbl,
-	.probe =	hil_init_chip,
+	.name		= "hil",
+	.id_table	= hil_tbl,
+	.probe		= hil_probe_chip,
+	.remove		= __devexit_p(hil_remove_chip),
 };
-#endif /* CONFIG_PARISC */
-
 
 static int __init hil_init(void)
 {
-#if defined(CONFIG_PARISC)
 	return register_parisc_driver(&hil_driver);
-#else
-	return hil_keyb_init();
-#endif
 }
 
-
 static void __exit hil_exit(void)
 {
-	if (HIL_IRQ) {
-		disable_irq(HIL_IRQ);
-		free_irq(HIL_IRQ, hil_dev.dev_id);
+	unregister_parisc_driver(&hil_driver);
+}
+
+#else /* !CONFIG_PARISC */
+
+static int __init hil_init(void)
+{
+	int error;
+
+	/* Only allow one HIL keyboard */
+	if (hil_dev.dev)
+		return -EBUSY;
+
+	if (!MACH_IS_HP300)
+		return -ENODEV;
+
+	if (!hwreg_present((void *)(HILBASE + HIL_DATA))) {
+		printk(KERN_ERR "HIL: hardware register was not found\n");
+		return -ENODEV;
 	}
 
-	/* Turn off interrupts */
-	hil_do(HIL_INTOFF, NULL, 0);
+	if (!request_region(HILBASE + HIL_DATA, 2, "hil")) {
+		printk(KERN_ERR "HIL: IOPORT region already used\n");
+		return -EIO;
+	}
 
-	input_unregister_device(hil_dev.dev);
+	error = hil_keyb_init();
+	if (error) {
+		release_region(HILBASE + HIL_DATA, 2);
+		return error;
+	}
 
-	hil_dev.dev = NULL;
+	return 0;
+}
 
-#if defined(CONFIG_PARISC)
-	unregister_parisc_driver(&hil_driver);
-#else
-	release_region(HILBASE+HIL_DATA, 2);
-#endif
+static void __exit hil_exit(void)
+{
+	hil_keyb_exit();
+	release_region(HILBASE + HIL_DATA, 2);
 }
 
+#endif /* CONFIG_PARISC */
+
 module_init(hil_init);
 module_exit(hil_exit);

drivers/input/misc/Kconfig

@@ -227,4 +227,27 @@ config INPUT_PCF50633_PMU
 	 Say Y to include support for delivering  PMU events via  input
 	 layer on NXP PCF50633.
 
+config INPUT_GPIO_ROTARY_ENCODER
+	tristate "Rotary encoders connected to GPIO pins"
+	depends on GPIOLIB && GENERIC_GPIO
+	help
+	  Say Y here to add support for rotary encoders connected to GPIO lines.
+	  Check file:Documentation/incput/rotary_encoder.txt for more
+	  information.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rotary_encoder.
+
+config INPUT_RB532_BUTTON
+	tristate "Mikrotik Routerboard 532 button interface"
+	depends on MIKROTIK_RB532
+	depends on GPIOLIB && GENERIC_GPIO
+	select INPUT_POLLDEV
+	help
+	  Say Y here if you want support for the S1 button built into
+	  Mikrotik's Routerboard 532.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rb532_button.
+
 endif

drivers/input/misc/Makefile

@@ -4,21 +4,23 @@
 
 # Each configuration option enables a list of files.
 
-obj-$(CONFIG_INPUT_SPARCSPKR)		+= sparcspkr.o
-obj-$(CONFIG_INPUT_PCSPKR)		+= pcspkr.o
-obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o
-obj-$(CONFIG_INPUT_IXP4XX_BEEPER)	+= ixp4xx-beeper.o
-obj-$(CONFIG_INPUT_COBALT_BTNS)		+= cobalt_btns.o
-obj-$(CONFIG_INPUT_WISTRON_BTNS)	+= wistron_btns.o
-obj-$(CONFIG_INPUT_ATLAS_BTNS)		+= atlas_btns.o
+obj-$(CONFIG_INPUT_APANEL)		+= apanel.o
 obj-$(CONFIG_INPUT_ATI_REMOTE)		+= ati_remote.o
 obj-$(CONFIG_INPUT_ATI_REMOTE2)		+= ati_remote2.o
-obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o
-obj-$(CONFIG_INPUT_POWERMATE)		+= powermate.o
-obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o
+obj-$(CONFIG_INPUT_ATLAS_BTNS)		+= atlas_btns.o
 obj-$(CONFIG_INPUT_CM109)		+= cm109.o
+obj-$(CONFIG_INPUT_COBALT_BTNS)		+= cobalt_btns.o
 obj-$(CONFIG_HP_SDC_RTC)		+= hp_sdc_rtc.o
-obj-$(CONFIG_INPUT_UINPUT)		+= uinput.o
-obj-$(CONFIG_INPUT_APANEL)		+= apanel.o
-obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o
+obj-$(CONFIG_INPUT_IXP4XX_BEEPER)	+= ixp4xx-beeper.o
+obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o
+obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o
 obj-$(CONFIG_INPUT_PCF50633_PMU)	+= pcf50633-input.o
+obj-$(CONFIG_INPUT_PCSPKR)		+= pcspkr.o
+obj-$(CONFIG_INPUT_POWERMATE)		+= powermate.o
+obj-$(CONFIG_INPUT_RB532_BUTTON)	+= rb532_button.o
+obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER)	+= rotary_encoder.o
+obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o
+obj-$(CONFIG_INPUT_SPARCSPKR)		+= sparcspkr.o
+obj-$(CONFIG_INPUT_UINPUT)		+= uinput.o
+obj-$(CONFIG_INPUT_WISTRON_BTNS)	+= wistron_btns.o
+obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o

drivers/input/misc/rb532_button.c

+/*
+ * Support for the S1 button on Routerboard 532
+ *
+ * Copyright (C) 2009  Phil Sutter <n0-1@freewrt.org>
+ */
+
+#include <linux/input-polldev.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-rc32434/gpio.h>
+#include <asm/mach-rc32434/rb.h>
+
+#define DRV_NAME "rb532-button"
+
+#define RB532_BTN_RATE 100 /* msec */
+#define RB532_BTN_KSYM BTN_0
+
+/* The S1 button state is provided by GPIO pin 1. But as this
+ * pin is also used for uart input as alternate function, the
+ * operational modes must be switched first:
+ * 1) disable uart using set_latch_u5()
+ * 2) turn off alternate function implicitly through
+ *    gpio_direction_input()
+ * 3) read the GPIO's current value
+ * 4) undo step 2 by enabling alternate function (in this
+ *    mode the GPIO direction is fixed, so no change needed)
+ * 5) turn on uart again
+ * The GPIO value occurs to be inverted, so pin high means
+ * button is not pressed.
+ */
+static bool rb532_button_pressed(void)
+{
+	int val;
+
+	set_latch_u5(0, LO_FOFF);
+	gpio_direction_input(GPIO_BTN_S1);
+
+	val = gpio_get_value(GPIO_BTN_S1);
+
+	rb532_gpio_set_func(GPIO_BTN_S1);
+	set_latch_u5(LO_FOFF, 0);
+
+	return !val;
+}
+
+static void rb532_button_poll(struct input_polled_dev *poll_dev)
+{
+	input_report_key(poll_dev->input, RB532_BTN_KSYM,
+			 rb532_button_pressed());
+	input_sync(poll_dev->input);
+}
+
+static int __devinit rb532_button_probe(struct platform_device *pdev)
+{
+	struct input_polled_dev *poll_dev;
+	int error;
+
+	poll_dev = input_allocate_polled_device();
+	if (!poll_dev)
+		return -ENOMEM;
+
+	poll_dev->poll = rb532_button_poll;
+	poll_dev->poll_interval = RB532_BTN_RATE;
+
+	poll_dev->input->name = "rb532 button";
+	poll_dev->input->phys = "rb532/button0";
+	poll_dev->input->id.bustype = BUS_HOST;
+	poll_dev->input->dev.parent = &pdev->dev;
+
+	dev_set_drvdata(&pdev->dev, poll_dev);
+
+	input_set_capability(poll_dev->input, EV_KEY, RB532_BTN_KSYM);
+
+	error = input_register_polled_device(poll_dev);
+	if (error) {
+		input_free_polled_device(poll_dev);
+		return error;
+	}
+
+	return 0;
+}
+
+static int __devexit rb532_button_remove(struct platform_device *pdev)
+{
+	struct input_polled_dev *poll_dev = dev_get_drvdata(&pdev->dev);
+
+	input_unregister_polled_device(poll_dev);
+	input_free_polled_device(poll_dev);
+	dev_set_drvdata(&pdev->dev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver rb532_button_driver = {
+	.probe = rb532_button_probe,
+	.remove = __devexit_p(rb532_button_remove),
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init rb532_button_init(void)
+{
+	return platform_driver_register(&rb532_button_driver);
+}
+
+static void __exit rb532_button_exit(void)
+{
+	platform_driver_unregister(&rb532_button_driver);
+}
+
+module_init(rb532_button_init);
+module_exit(rb532_button_exit);
+
+MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Support for S1 button on Routerboard 532");
+MODULE_ALIAS("platform:" DRV_NAME);

drivers/input/misc/rotary_encoder.c

+/*
+ * rotary_encoder.c
+ *
+ * (c) 2009 Daniel Mack <daniel@caiaq.de>
+ *
+ * state machine code inspired by code from Tim Ruetz
+ *
+ * A generic driver for rotary encoders connected to GPIO lines.
+ * See file:Documentation/input/rotary_encoder.txt for more information
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/rotary_encoder.h>
+
+#define DRV_NAME "rotary-encoder"
+
+struct rotary_encoder {
+	unsigned int irq_a;
+	unsigned int irq_b;
+	unsigned int pos;
+	unsigned int armed;
+	unsigned int dir;
+	struct input_dev *input;
+	struct rotary_encoder_platform_data *pdata;
+};
+
+static irqreturn_t rotary_encoder_irq(int irq, void *dev_id)
+{
+	struct rotary_encoder *encoder = dev_id;
+	struct rotary_encoder_platform_data *pdata = encoder->pdata;
+	int a = !!gpio_get_value(pdata->gpio_a);
+	int b = !!gpio_get_value(pdata->gpio_b);
+	int state;
+
+	a ^= pdata->inverted_a;
+	b ^= pdata->inverted_b;
+	state = (a << 1) | b;
+
+	switch (state) {
+
+	case 0x0:
+		if (!encoder->armed)
+			break;
+
+		if (encoder->dir) {
+			/* turning counter-clockwise */
+			encoder->pos += pdata->steps;
+			encoder->pos--;
+			encoder->pos %= pdata->steps;
+		} else {
+			/* turning clockwise */
+			encoder->pos++;
+			encoder->pos %= pdata->steps;
+		}
+
+		input_report_abs(encoder->input, pdata->axis, encoder->pos);
+		input_sync(encoder->input);
+
+		encoder->armed = 0;
+		break;
+
+	case 0x1:
+	case 0x2:
+		if (encoder->armed)
+			encoder->dir = state - 1;
+		break;
+
+	case 0x3:
+		encoder->armed = 1;
+		break;
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit rotary_encoder_probe(struct platform_device *pdev)
+{
+	struct rotary_encoder_platform_data *pdata = pdev->dev.platform_data;
+	struct rotary_encoder *encoder;
+	struct input_dev *input;
+	int err;
+
+	if (!pdata || !pdata->steps) {
+		dev_err(&pdev->dev, "invalid platform data\n");
+		return -ENOENT;
+	}
+
+	encoder = kzalloc(sizeof(struct rotary_encoder), GFP_KERNEL);
+	input = input_allocate_device();
+	if (!encoder || !input) {
+		dev_err(&pdev->dev, "failed to allocate memory for device\n");
+		err = -ENOMEM;
+		goto exit_free_mem;
+	}
+
+	encoder->input = input;
+	encoder->pdata = pdata;
+	encoder->irq_a = gpio_to_irq(pdata->gpio_a);
+	encoder->irq_b = gpio_to_irq(pdata->gpio_b);
+
+	/* create and register the input driver */
+	input->name = pdev->name;
+	input->id.bustype = BUS_HOST;
+	input->dev.parent = &pdev->dev;
+	input->evbit[0] = BIT_MASK(EV_ABS);
+	input_set_abs_params(encoder->input,
+			     pdata->axis, 0, pdata->steps, 0, 1);
+
+	err = input_register_device(input);
+	if (err) {
+		dev_err(&pdev->dev, "failed to register input device\n");
+		goto exit_free_mem;
+	}
+
+	/* request the GPIOs */
+	err = gpio_request(pdata->gpio_a, DRV_NAME);
+	if (err) {
+		dev_err(&pdev->dev, "unable to request GPIO %d\n",
+			pdata->gpio_a);
+		goto exit_unregister_input;
+	}
+
+	err = gpio_request(pdata->gpio_b, DRV_NAME);
+	if (err) {
+		dev_err(&pdev->dev, "unable to request GPIO %d\n",
+			pdata->gpio_b);
+		goto exit_free_gpio_a;
+	}
+
+	/* request the IRQs */
+	err = request_irq(encoder->irq_a, &rotary_encoder_irq,
+			  IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE,
+			  DRV_NAME, encoder);
+	if (err) {
+		dev_err(&pdev->dev, "unable to request IRQ %d\n",
+			encoder->irq_a);
+		goto exit_free_gpio_b;
+	}
+
+	err = request_irq(encoder->irq_b, &rotary_encoder_irq,
+			  IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE,
+			  DRV_NAME, encoder);
+	if (err) {
+		dev_err(&pdev->dev, "unable to request IRQ %d\n",
+			encoder->irq_b);
+		goto exit_free_irq_a;
+	}
+
+	platform_set_drvdata(pdev, encoder);
+
+	return 0;
+
+exit_free_irq_a:
+	free_irq(encoder->irq_a, encoder);
+exit_free_gpio_b:
+	gpio_free(pdata->gpio_b);
+exit_free_gpio_a:
+	gpio_free(pdata->gpio_a);
+exit_unregister_input:
+	input_unregister_device(input);
+	input = NULL; /* so we don't try to free it */
+exit_free_mem:
+	input_free_device(input);
+	kfree(encoder);
+	return err;
+}
+
+static int __devexit rotary_encoder_remove(struct platform_device *pdev)
+{
+	struct rotary_encoder *encoder = platform_get_drvdata(pdev);
+	struct rotary_encoder_platform_data *pdata = pdev->dev.platform_data;
+
+	free_irq(encoder->irq_a, encoder);
+	free_irq(encoder->irq_b, encoder);
+	gpio_free(pdata->gpio_a);
+	gpio_free(pdata->gpio_b);
+	input_unregister_device(encoder->input);
+	platform_set_drvdata(pdev, NULL);
+	kfree(encoder);
+
+	return 0;
+}
+
+static struct platform_driver rotary_encoder_driver = {
+	.probe		= rotary_encoder_probe,
+	.remove		= __devexit_p(rotary_encoder_remove),
+	.driver		= {
+		.name	= DRV_NAME,
+		.owner	= THIS_MODULE,
+	}
+};
+
+static int __init rotary_encoder_init(void)
+{
+	return platform_driver_register(&rotary_encoder_driver);
+}
+
+static void __exit rotary_encoder_exit(void)
+{
+	platform_driver_unregister(&rotary_encoder_driver);
+}
+
+module_init(rotary_encoder_init);
+module_exit(rotary_encoder_exit);
+
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DESCRIPTION("GPIO rotary encoder driver");
+MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
+MODULE_LICENSE("GPL v2");
+

drivers/input/mouse/Kconfig

@@ -292,4 +292,15 @@ config MOUSE_PXA930_TRKBALL
 	help
 	  Say Y here to support PXA930 Trackball mouse.
 
+config MOUSE_MAPLE
+	tristate "Maple mouse (for the Dreamcast)"
+	depends on MAPLE
+	help
+	  This driver supports the Maple mouse on the SEGA Dreamcast.
+
+	  Most Dreamcast users, who have a mouse, will say Y here.
+
+	  To compile this driver as a module choose M here: the module will be
+	  called maplemouse.
+
 endif

drivers/input/mouse/Makefile

@@ -6,18 +6,19 @@
 
 obj-$(CONFIG_MOUSE_AMIGA)		+= amimouse.o
 obj-$(CONFIG_MOUSE_APPLETOUCH)		+= appletouch.o
-obj-$(CONFIG_MOUSE_BCM5974)		+= bcm5974.o
 obj-$(CONFIG_MOUSE_ATARI)		+= atarimouse.o
-obj-$(CONFIG_MOUSE_RISCPC)		+= rpcmouse.o
+obj-$(CONFIG_MOUSE_BCM5974)		+= bcm5974.o
+obj-$(CONFIG_MOUSE_GPIO)		+= gpio_mouse.o
+obj-$(CONFIG_MOUSE_HIL)			+= hil_ptr.o
 obj-$(CONFIG_MOUSE_INPORT)		+= inport.o
 obj-$(CONFIG_MOUSE_LOGIBM)		+= logibm.o
+obj-$(CONFIG_MOUSE_MAPLE)		+= maplemouse.o
 obj-$(CONFIG_MOUSE_PC110PAD)		+= pc110pad.o
 obj-$(CONFIG_MOUSE_PS2)			+= psmouse.o
 obj-$(CONFIG_MOUSE_PXA930_TRKBALL)	+= pxa930_trkball.o
+obj-$(CONFIG_MOUSE_RISCPC)		+= rpcmouse.o
 obj-$(CONFIG_MOUSE_SERIAL)		+= sermouse.o
-obj-$(CONFIG_MOUSE_HIL)			+= hil_ptr.o
 obj-$(CONFIG_MOUSE_VSXXXAA)		+= vsxxxaa.o
-obj-$(CONFIG_MOUSE_GPIO)		+= gpio_mouse.o
 
 psmouse-objs := psmouse-base.o synaptics.o
 

drivers/input/mouse/hgpk.c

@@ -472,7 +472,7 @@ static enum hgpk_model_t hgpk_get_model(struct psmouse *psmouse)
 		return -EIO;
 	}
 
-	hgpk_dbg(psmouse, "ID: %02x %02x %02x", param[0], param[1], param[2]);
+	hgpk_dbg(psmouse, "ID: %02x %02x %02x\n", param[0], param[1], param[2]);
 
 	/* HGPK signature: 0x67, 0x00, 0x<model> */
 	if (param[0] != 0x67 || param[1] != 0x00)

drivers/input/mouse/maplemouse.c

+/*
+ *	SEGA Dreamcast mouse driver
+ *	Based on drivers/usb/usbmouse.c
+ *
+ *	Copyright Yaegashi Takeshi, 2001
+ *	Adrian McMenamin, 2008
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/maple.h>
+
+MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
+MODULE_DESCRIPTION("SEGA Dreamcast mouse driver");
+MODULE_LICENSE("GPL");
+
+struct dc_mouse {
+	struct input_dev *dev;
+	struct maple_device *mdev;
+};
+
+static void dc_mouse_callback(struct mapleq *mq)
+{
+	int buttons, relx, rely, relz;
+	struct maple_device *mapledev = mq->dev;
+	struct dc_mouse *mse = maple_get_drvdata(mapledev);
+	struct input_dev *dev = mse->dev;
+	unsigned char *res = mq->recvbuf;
+
+	buttons = ~res[8];
+	relx = *(unsigned short *)(res + 12) - 512;
+	rely = *(unsigned short *)(res + 14) - 512;
+	relz = *(unsigned short *)(res + 16) - 512;
+
+	input_report_key(dev, BTN_LEFT,   buttons & 4);
+	input_report_key(dev, BTN_MIDDLE, buttons & 9);
+	input_report_key(dev, BTN_RIGHT,  buttons & 2);
+	input_report_rel(dev, REL_X,      relx);
+	input_report_rel(dev, REL_Y,      rely);
+	input_report_rel(dev, REL_WHEEL,  relz);
+	input_sync(dev);
+}
+
+static int dc_mouse_open(struct input_dev *dev)
+{
+	struct dc_mouse *mse = dev->dev.platform_data;
+
+	maple_getcond_callback(mse->mdev, dc_mouse_callback, HZ/50,
+		MAPLE_FUNC_MOUSE);
+
+	return 0;
+}
+
+static void dc_mouse_close(struct input_dev *dev)
+{
+	struct dc_mouse *mse = dev->dev.platform_data;
+
+	maple_getcond_callback(mse->mdev, dc_mouse_callback, 0,
+		MAPLE_FUNC_MOUSE);
+}
+
+
+static int __devinit probe_maple_mouse(struct device *dev)
+{
+	struct maple_device *mdev = to_maple_dev(dev);
+	struct maple_driver *mdrv = to_maple_driver(dev->driver);
+	struct input_dev *input_dev;
+	struct dc_mouse *mse;
+	int error;
+
+	mse = kzalloc(sizeof(struct dc_mouse), GFP_KERNEL);
+	input_dev = input_allocate_device();
+
+	if (!mse || !input_dev) {
+		error = -ENOMEM;
+		goto fail;
+	}
+
+	mse->dev = input_dev;
+	mse->mdev = mdev;
+
+	input_set_drvdata(input_dev, mse);
+	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+	input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
+		BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
+	input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
+		BIT_MASK(REL_WHEEL);
+	input_dev->name = mdev->product_name;
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->open = dc_mouse_open;
+	input_dev->close = dc_mouse_close;
+
+	mdev->driver = mdrv;
+	maple_set_drvdata(mdev, mse);
+
+	error =	input_register_device(input_dev);
+	if (error)
+		goto fail;
+
+	return 0;
+
+fail:
+	input_free_device(input_dev);
+	maple_set_drvdata(mdev, NULL);
+	kfree(mse);
+	mdev->driver = NULL;
+	return error;
+}
+
+static int __devexit remove_maple_mouse(struct device *dev)
+{
+	struct maple_device *mdev = to_maple_dev(dev);
+	struct dc_mouse *mse = maple_get_drvdata(mdev);
+
+	mdev->callback = NULL;
+	input_unregister_device(mse->dev);
+	maple_set_drvdata(mdev, NULL);
+	kfree(mse);
+
+	return 0;
+}
+
+static struct maple_driver dc_mouse_driver = {
+	.function =	MAPLE_FUNC_MOUSE,
+	.drv = {
+		.name = "Dreamcast_mouse",
+		.probe = probe_maple_mouse,
+		.remove = __devexit_p(remove_maple_mouse),
+	},
+};
+
+static int __init dc_mouse_init(void)
+{
+	return maple_driver_register(&dc_mouse_driver);
+}
+
+static void __exit dc_mouse_exit(void)
+{
+	maple_driver_unregister(&dc_mouse_driver);
+}
+
+module_init(dc_mouse_init);
+module_exit(dc_mouse_exit);

drivers/input/mouse/pc110pad.c

@@ -111,11 +111,8 @@ static int __init pc110pad_init(void)
 	struct pci_dev *dev;
 	int err;
 
-	dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
-	if (dev) {
-		pci_dev_put(dev);
+	if (!no_pci_devices())
 		return -ENODEV;
-	}
 
 	if (!request_region(pc110pad_io, 4, "pc110pad")) {
 		printk(KERN_ERR "pc110pad: I/O area %#x-%#x in use.\n",

drivers/input/serio/i8042-x86ia64io.h

@@ -151,6 +151,14 @@ static struct dmi_system_id __initdata i8042_dmi_noloop_table[] = {
 			DMI_MATCH(DMI_PRODUCT_VERSION, "01"),
 		},
 	},
+	{
+		.ident = "HP DV9700",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv9700"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Rev 1"),
+		},
+	},
 	{ }
 };
 

drivers/input/touchscreen/Kconfig

@@ -29,6 +29,51 @@ config TOUCHSCREEN_ADS7846
 	  To compile this driver as a module, choose M here: the
 	  module will be called ads7846.
 
+config TOUCHSCREEN_AD7877
+	tristate "AD7877 based touchscreens"
+	depends on SPI_MASTER
+	help
+	  Say Y here if you have a touchscreen interface using the
+	  AD7877 controller, and your board-specific initialization
+	  code includes that in its table of SPI devices.
+
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7877.
+
+config TOUCHSCREEN_AD7879_I2C
+	tristate "AD7879 based touchscreens: AD7879-1 I2C Interface"
+	depends on I2C
+	select TOUCHSCREEN_AD7879
+	help
+	  Say Y here if you have a touchscreen interface using the
+	  AD7879-1 controller, and your board-specific initialization
+	  code includes that in its table of I2C devices.
+
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7879.
+
+config TOUCHSCREEN_AD7879_SPI
+	tristate "AD7879 based touchscreens: AD7879 SPI Interface"
+	depends on SPI_MASTER && TOUCHSCREEN_AD7879_I2C = n
+	select TOUCHSCREEN_AD7879
+	help
+	  Say Y here if you have a touchscreen interface using the
+	  AD7879 controller, and your board-specific initialization
+	  code includes that in its table of SPI devices.
+
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7879.
+
+config TOUCHSCREEN_AD7879
+	tristate
+	default n
+
 config TOUCHSCREEN_BITSY
 	tristate "Compaq iPAQ H3600 (Bitsy) touchscreen"
 	depends on SA1100_BITSY
@@ -308,6 +353,19 @@ config TOUCHSCREEN_WM97XX_MAINSTONE
 	  To compile this driver as a module, choose M here: the
 	  module will be called mainstone-wm97xx.
 
+config TOUCHSCREEN_WM97XX_ZYLONITE
+	tristate "Zylonite accelerated touch"
+	depends on TOUCHSCREEN_WM97XX && MACH_ZYLONITE
+	select TOUCHSCREEN_WM9713
+	help
+	  Say Y here for support for streaming mode with the touchscreen
+	  on Zylonite systems.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called zylonite-wm97xx.
+
 config TOUCHSCREEN_USB_COMPOSITE
 	tristate "USB Touchscreen Driver"
 	depends on USB_ARCH_HAS_HCD

drivers/input/touchscreen/Makefile

@@ -6,6 +6,8 @@
 
 wm97xx-ts-y := wm97xx-core.o
 
+obj-$(CONFIG_TOUCHSCREEN_AD7877)	+= ad7877.o
+obj-$(CONFIG_TOUCHSCREEN_AD7879)	+= ad7879.o
 obj-$(CONFIG_TOUCHSCREEN_ADS7846)	+= ads7846.o
 obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC)	+= atmel_tsadcc.o
 obj-$(CONFIG_TOUCHSCREEN_BITSY)		+= h3600_ts_input.o
@@ -34,3 +36,4 @@ wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705)	+= wm9705.o
 wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712)	+= wm9712.o
 wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9713)	+= wm9713.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE)	+= mainstone-wm97xx.o
+obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE)	+= zylonite-wm97xx.o

drivers/input/touchscreen/mainstone-wm97xx.c

@@ -162,6 +162,7 @@ static int wm97xx_acc_pen_down(struct wm97xx *wm)
 		input_report_abs(wm->input_dev, ABS_X, x & 0xfff);
 		input_report_abs(wm->input_dev, ABS_Y, y & 0xfff);
 		input_report_abs(wm->input_dev, ABS_PRESSURE, p & 0xfff);
+		input_report_key(wm->input_dev, BTN_TOUCH, (p != 0));
 		input_sync(wm->input_dev);
 		reads++;
 	} while (reads < cinfo[sp_idx].reads);
@@ -245,7 +246,7 @@ static void wm97xx_irq_enable(struct wm97xx *wm, int enable)
 	if (enable)
 		enable_irq(wm->pen_irq);
 	else
-		disable_irq(wm->pen_irq);
+		disable_irq_nosync(wm->pen_irq);
 }
 
 static struct wm97xx_mach_ops mainstone_mach_ops = {

drivers/input/touchscreen/ucb1400_ts.c

@@ -151,12 +151,14 @@ static void ucb1400_ts_evt_add(struct input_dev *idev, u16 pressure, u16 x, u16
 	input_report_abs(idev, ABS_X, x);
 	input_report_abs(idev, ABS_Y, y);
 	input_report_abs(idev, ABS_PRESSURE, pressure);
+	input_report_key(idev, BTN_TOUCH, 1);
 	input_sync(idev);
 }
 
 static void ucb1400_ts_event_release(struct input_dev *idev)
 {
 	input_report_abs(idev, ABS_PRESSURE, 0);
+	input_report_key(idev, BTN_TOUCH, 0);
 	input_sync(idev);
 }
 
@@ -377,7 +379,8 @@ static int ucb1400_ts_probe(struct platform_device *dev)
 	ucb->ts_idev->id.product	= ucb->id;
 	ucb->ts_idev->open		= ucb1400_ts_open;
 	ucb->ts_idev->close		= ucb1400_ts_close;
-	ucb->ts_idev->evbit[0]		= BIT_MASK(EV_ABS);
+	ucb->ts_idev->evbit[0]		= BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
+	ucb->ts_idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 
 	ucb1400_adc_enable(ucb->ac97);
 	x_res = ucb1400_ts_read_xres(ucb);

drivers/input/touchscreen/wm97xx-core.c

@@ -409,6 +409,7 @@ static int wm97xx_read_samples(struct wm97xx *wm)
 			wm->pen_is_down = 0;
 			dev_dbg(wm->dev, "pen up\n");
 			input_report_abs(wm->input_dev, ABS_PRESSURE, 0);
+			input_report_key(wm->input_dev, BTN_TOUCH, 0);
 			input_sync(wm->input_dev);
 		} else if (!(rc & RC_AGAIN)) {
 			/* We need high frequency updates only while
@@ -433,6 +434,7 @@ static int wm97xx_read_samples(struct wm97xx *wm)
 		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);
+		input_report_key(wm->input_dev, BTN_TOUCH, 1);
 		input_sync(wm->input_dev);
 		wm->pen_is_down = 1;
 		wm->ts_reader_interval = wm->ts_reader_min_interval;
@@ -628,18 +630,21 @@ static int wm97xx_probe(struct device *dev)
 	wm->input_dev->phys = "wm97xx";
 	wm->input_dev->open = wm97xx_ts_input_open;
 	wm->input_dev->close = wm97xx_ts_input_close;
-	set_bit(EV_ABS, wm->input_dev->evbit);
-	set_bit(ABS_X, wm->input_dev->absbit);
-	set_bit(ABS_Y, wm->input_dev->absbit);
-	set_bit(ABS_PRESSURE, wm->input_dev->absbit);
+
+	__set_bit(EV_ABS, wm->input_dev->evbit);
+	__set_bit(EV_KEY, wm->input_dev->evbit);
+	__set_bit(BTN_TOUCH, wm->input_dev->keybit);
+
 	input_set_abs_params(wm->input_dev, ABS_X, abs_x[0], abs_x[1],
 			     abs_x[2], 0);
 	input_set_abs_params(wm->input_dev, ABS_Y, abs_y[0], abs_y[1],
 			     abs_y[2], 0);
 	input_set_abs_params(wm->input_dev, ABS_PRESSURE, abs_p[0], abs_p[1],
 			     abs_p[2], 0);
+
 	input_set_drvdata(wm->input_dev, wm);
 	wm->input_dev->dev.parent = dev;
+
 	ret = input_register_device(wm->input_dev);
 	if (ret < 0)
 		goto dev_alloc_err;

drivers/input/touchscreen/zylonite-wm97xx.c

+/*
+ * zylonite-wm97xx.c  --  Zylonite Continuous Touch screen driver
+ *
+ * Copyright 2004, 2007, 2008 Wolfson Microelectronics PLC.
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ * Parts Copyright : Ian Molton <spyro@f2s.com>
+ *                   Andrew Zabolotny <zap@homelink.ru>
+ *
+ *  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.
+ *
+ * Notes:
+ *     This is a wm97xx extended touch driver supporting interrupt driven
+ *     and continuous operation on Marvell Zylonite development systems
+ *     (which have a WM9713 on board).
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/wm97xx.h>
+
+#include <mach/hardware.h>
+#include <mach/mfp.h>
+#include <mach/regs-ac97.h>
+
+struct continuous {
+	u16 id;    /* codec id */
+	u8 code;   /* continuous code */
+	u8 reads;  /* number of coord reads per read cycle */
+	u32 speed; /* number of coords per second */
+};
+
+#define WM_READS(sp) ((sp / HZ) + 1)
+
+static const struct continuous cinfo[] = {
+	{ WM9713_ID2, 0, WM_READS(94),  94  },
+	{ WM9713_ID2, 1, WM_READS(120), 120 },
+	{ WM9713_ID2, 2, WM_READS(154), 154 },
+	{ WM9713_ID2, 3, WM_READS(188), 188 },
+};
+
+/* continuous speed index */
+static int sp_idx;
+
+/*
+ * Pen sampling frequency (Hz) in continuous mode.
+ */
+static int cont_rate = 200;
+module_param(cont_rate, int, 0);
+MODULE_PARM_DESC(cont_rate, "Sampling rate in continuous mode (Hz)");
+
+/*
+ * Pressure readback.
+ *
+ * Set to 1 to read back pen down pressure
+ */
+static int pressure;
+module_param(pressure, int, 0);
+MODULE_PARM_DESC(pressure, "Pressure readback (1 = pressure, 0 = no pressure)");
+
+/*
+ * AC97 touch data slot.
+ *
+ * Touch screen readback data ac97 slot
+ */
+static int ac97_touch_slot = 5;
+module_param(ac97_touch_slot, int, 0);
+MODULE_PARM_DESC(ac97_touch_slot, "Touch screen data slot AC97 number");
+
+
+/* flush AC97 slot 5 FIFO machines */
+static void wm97xx_acc_pen_up(struct wm97xx *wm)
+{
+	int i;
+
+	msleep(1);
+
+	for (i = 0; i < 16; i++)
+		MODR;
+}
+
+static int wm97xx_acc_pen_down(struct wm97xx *wm)
+{
+	u16 x, y, p = 0x100 | WM97XX_ADCSEL_PRES;
+	int reads = 0;
+	static u16 last, tries;
+
+	/* When the AC97 queue has been drained we need to allow time
+	 * to buffer up samples otherwise we end up spinning polling
+	 * for samples.  The controller can't have a suitably low
+	 * threashold set to use the notifications it gives.
+	 */
+	msleep(1);
+
+	if (tries > 5) {
+		tries = 0;
+		return RC_PENUP;
+	}
+
+	x = MODR;
+	if (x == last) {
+		tries++;
+		return RC_AGAIN;
+	}
+	last = x;
+	do {
+		if (reads)
+			x = MODR;
+		y = MODR;
+		if (pressure)
+			p = MODR;
+
+		/* are samples valid */
+		if ((x & WM97XX_ADCSRC_MASK) != WM97XX_ADCSEL_X ||
+		    (y & WM97XX_ADCSRC_MASK) != WM97XX_ADCSEL_Y ||
+		    (p & WM97XX_ADCSRC_MASK) != WM97XX_ADCSEL_PRES)
+			goto up;
+
+		/* coordinate is good */
+		tries = 0;
+		input_report_abs(wm->input_dev, ABS_X, x & 0xfff);
+		input_report_abs(wm->input_dev, ABS_Y, y & 0xfff);
+		input_report_abs(wm->input_dev, ABS_PRESSURE, p & 0xfff);
+		input_report_key(wm->input_dev, BTN_TOUCH, (p != 0));
+		input_sync(wm->input_dev);
+		reads++;
+	} while (reads < cinfo[sp_idx].reads);
+up:
+	return RC_PENDOWN | RC_AGAIN;
+}
+
+static int wm97xx_acc_startup(struct wm97xx *wm)
+{
+	int idx;
+
+	/* check we have a codec */
+	if (wm->ac97 == NULL)
+		return -ENODEV;
+
+	/* Go you big red fire engine */
+	for (idx = 0; idx < ARRAY_SIZE(cinfo); idx++) {
+		if (wm->id != cinfo[idx].id)
+			continue;
+		sp_idx = idx;
+		if (cont_rate <= cinfo[idx].speed)
+			break;
+	}
+	wm->acc_rate = cinfo[sp_idx].code;
+	wm->acc_slot = ac97_touch_slot;
+	dev_info(wm->dev,
+		 "zylonite accelerated touchscreen driver, %d samples/sec\n",
+		 cinfo[sp_idx].speed);
+
+	return 0;
+}
+
+static void wm97xx_irq_enable(struct wm97xx *wm, int enable)
+{
+	if (enable)
+		enable_irq(wm->pen_irq);
+	else
+		disable_irq_nosync(wm->pen_irq);
+}
+
+static struct wm97xx_mach_ops zylonite_mach_ops = {
+	.acc_enabled	= 1,
+	.acc_pen_up	= wm97xx_acc_pen_up,
+	.acc_pen_down	= wm97xx_acc_pen_down,
+	.acc_startup	= wm97xx_acc_startup,
+	.irq_enable	= wm97xx_irq_enable,
+	.irq_gpio	= WM97XX_GPIO_2,
+};
+
+static int zylonite_wm97xx_probe(struct platform_device *pdev)
+{
+	struct wm97xx *wm = platform_get_drvdata(pdev);
+	int gpio_touch_irq;
+
+	if (cpu_is_pxa320())
+		gpio_touch_irq = mfp_to_gpio(MFP_PIN_GPIO15);
+	else
+		gpio_touch_irq = mfp_to_gpio(MFP_PIN_GPIO26);
+
+	wm->pen_irq = IRQ_GPIO(gpio_touch_irq);
+	set_irq_type(IRQ_GPIO(gpio_touch_irq), IRQ_TYPE_EDGE_BOTH);
+
+	wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN,
+			   WM97XX_GPIO_POL_HIGH,
+			   WM97XX_GPIO_STICKY,
+			   WM97XX_GPIO_WAKE);
+	wm97xx_config_gpio(wm, WM97XX_GPIO_2, WM97XX_GPIO_OUT,
+			   WM97XX_GPIO_POL_HIGH,
+			   WM97XX_GPIO_NOTSTICKY,
+			   WM97XX_GPIO_NOWAKE);
+
+	return wm97xx_register_mach_ops(wm, &zylonite_mach_ops);
+}
+
+static int zylonite_wm97xx_remove(struct platform_device *pdev)
+{
+	struct wm97xx *wm = platform_get_drvdata(pdev);
+
+	wm97xx_unregister_mach_ops(wm);
+
+	return 0;
+}
+
+static struct platform_driver zylonite_wm97xx_driver = {
+	.probe	= zylonite_wm97xx_probe,
+	.remove	= zylonite_wm97xx_remove,
+	.driver	= {
+		.name	= "wm97xx-touch",
+	},
+};
+
+static int __init zylonite_wm97xx_init(void)
+{
+	return platform_driver_register(&zylonite_wm97xx_driver);
+}
+
+static void __exit zylonite_wm97xx_exit(void)
+{
+	platform_driver_unregister(&zylonite_wm97xx_driver);
+}
+
+module_init(zylonite_wm97xx_init);
+module_exit(zylonite_wm97xx_exit);
+
+/* Module information */
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_DESCRIPTION("wm97xx continuous touch driver for Zylonite");
+MODULE_LICENSE("GPL");

include/linux/rotary_encoder.h

+#ifndef __ROTARY_ENCODER_H__
+#define __ROTARY_ENCODER_H__
+
+struct rotary_encoder_platform_data {
+	unsigned int steps;
+	unsigned int axis;
+	unsigned int gpio_a;
+	unsigned int gpio_b;
+	unsigned int inverted_a;
+	unsigned int inverted_b;
+};
+
+#endif /* __ROTARY_ENCODER_H__ */

include/linux/spi/ad7879.h

+/* linux/spi/ad7879.h */
+
+/* Touchscreen characteristics vary between boards and models.  The
+ * platform_data for the device's "struct device" holds this information.
+ *
+ * It's OK if the min/max values are zero.
+ */
+struct ad7879_platform_data {
+	u16	model;			/* 7879 */
+	u16	x_plate_ohms;
+	u16	x_min, x_max;
+	u16	y_min, y_max;
+	u16	pressure_min, pressure_max;
+
+	/* [0..255] 0=OFF Starts at 1=550us and goes
+	 * all the way to 9.440ms in steps of 35us.
+	 */
+	u8	pen_down_acc_interval;
+	/* [0..15] Starts at 0=128us and goes all the
+	 * way to 4.096ms in steps of 128us.
+	 */
+	u8	first_conversion_delay;
+	/* [0..3] 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */
+	u8	acquisition_time;
+	/* [0..3] Average X middle samples 0 = 2, 1 = 4, 2 = 8, 3 = 16 */
+	u8	averaging;
+	/* [0..3] Perform X measurements 0 = OFF,
+	 * 1 = 4, 2 = 8, 3 = 16 (median > averaging)
+	 */
+	u8	median;
+	/* 1 = AUX/VBAT/GPIO set to GPIO Output */
+	u8	gpio_output;
+	/* Initial GPIO pin state (valid if gpio_output = 1) */
+	u8	gpio_default;
+};