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Commit 9d2e1736 authored by Michael Hennerich's avatar Michael Hennerich Committed by Dmitry Torokhov
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Input: ADP5589 - new driver for I2C Keypad Decoder and I/O Expander 

From http://www.analog.com/ADP5589

:
The ADP5589 is an I/O port expander and keypad matrix decoder designed
for QWERTY type phones that require a large keypad matrix and expanded
I/O lines.

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 891e376b

drivers/input/keyboard/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -32,6 +32,16 @@ config KEYBOARD_ADP5588 
	  To compile this driver as a module, choose M here: the

	  module will be called adp5588-keys.



config KEYBOARD_ADP5589

	tristate "ADP5589 I2C QWERTY Keypad and IO Expander"

	depends on I2C

	help

	  Say Y here if you want to use a ADP5589 attached to your

	  system I2C bus.



	  To compile this driver as a module, choose M here: the

	  module will be called adp5589-keys.



config KEYBOARD_AMIGA

	tristate "Amiga keyboard"

	depends on AMIGA

drivers/input/keyboard/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 


obj-$(CONFIG_KEYBOARD_ADP5520)		+= adp5520-keys.o

obj-$(CONFIG_KEYBOARD_ADP5588)		+= adp5588-keys.o

obj-$(CONFIG_KEYBOARD_ADP5589)		+= adp5589-keys.o

obj-$(CONFIG_KEYBOARD_AMIGA)		+= amikbd.o

obj-$(CONFIG_KEYBOARD_ATARI)		+= atakbd.o

obj-$(CONFIG_KEYBOARD_ATKBD)		+= atkbd.o

drivers/input/keyboard/adp5589-keys.c

0 → 100644
+771 −0
Original line number Diff line number Diff line 
/*

 * Description:  keypad driver for ADP5589

 *		 I2C QWERTY Keypad and IO Expander

 * Bugs: Enter bugs at http://blackfin.uclinux.org/

 *

 * Copyright (C) 2010-2011 Analog Devices Inc.

 * Licensed under the GPL-2.

 */



#include <linux/module.h>

#include <linux/version.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/workqueue.h>

#include <linux/errno.h>

#include <linux/pm.h>

#include <linux/platform_device.h>

#include <linux/input.h>

#include <linux/i2c.h>

#include <linux/gpio.h>

#include <linux/slab.h>



#include <linux/input/adp5589.h>



/* GENERAL_CFG Register */

#define OSC_EN		(1 << 7)

#define CORE_CLK(x)	(((x) & 0x3) << 5)

#define LCK_TRK_LOGIC	(1 << 4)

#define LCK_TRK_GPI	(1 << 3)

#define INT_CFG		(1 << 1)

#define RST_CFG		(1 << 0)



/* INT_EN Register */

#define LOGIC2_IEN	(1 << 5)

#define LOGIC1_IEN	(1 << 4)

#define LOCK_IEN	(1 << 3)

#define OVRFLOW_IEN	(1 << 2)

#define GPI_IEN		(1 << 1)

#define EVENT_IEN	(1 << 0)



/* Interrupt Status Register */

#define LOGIC2_INT	(1 << 5)

#define LOGIC1_INT	(1 << 4)

#define LOCK_INT	(1 << 3)

#define OVRFLOW_INT	(1 << 2)

#define GPI_INT		(1 << 1)

#define EVENT_INT	(1 << 0)



/* STATUS Register */



#define LOGIC2_STAT	(1 << 7)

#define LOGIC1_STAT	(1 << 6)

#define LOCK_STAT	(1 << 5)

#define KEC		0xF



/* PIN_CONFIG_D Register */

#define C4_EXTEND_CFG	(1 << 6)	/* RESET2 */

#define R4_EXTEND_CFG	(1 << 5)	/* RESET1 */



/* LOCK_CFG */

#define LOCK_EN		(1 << 0)



#define PTIME_MASK	0x3

#define LTIME_MASK	0x3



/* Key Event Register xy */

#define KEY_EV_PRESSED		(1 << 7)

#define KEY_EV_MASK		(0x7F)



#define KEYP_MAX_EVENT		16



#define MAXGPIO			19

#define ADP_BANK(offs)		((offs) >> 3)

#define ADP_BIT(offs)		(1u << ((offs) & 0x7))



struct adp5589_kpad {

	struct i2c_client *client;

	struct input_dev *input;

	unsigned short keycode[ADP5589_KEYMAPSIZE];

	const struct adp5589_gpi_map *gpimap;

	unsigned short gpimapsize;

	unsigned extend_cfg;

#ifdef CONFIG_GPIOLIB

	unsigned char gpiomap[MAXGPIO];

	bool export_gpio;

	struct gpio_chip gc;

	struct mutex gpio_lock;	/* Protect cached dir, dat_out */

	u8 dat_out[3];

	u8 dir[3];

#endif

};



static int adp5589_read(struct i2c_client *client, u8 reg)

{

	int ret = i2c_smbus_read_byte_data(client, reg);



	if (ret < 0)

		dev_err(&client->dev, "Read Error\n");



	return ret;

}



static int adp5589_write(struct i2c_client *client, u8 reg, u8 val)

{

	return i2c_smbus_write_byte_data(client, reg, val);

}



#ifdef CONFIG_GPIOLIB

static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off)

{

	struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);

	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);

	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);



	return !!(adp5589_read(kpad->client, ADP5589_GPI_STATUS_A + bank) &

		  bit);

}



static void adp5589_gpio_set_value(struct gpio_chip *chip,

				   unsigned off, int val)

{

	struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);

	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);

	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);



	mutex_lock(&kpad->gpio_lock);



	if (val)

		kpad->dat_out[bank] |= bit;

	else

		kpad->dat_out[bank] &= ~bit;



	adp5589_write(kpad->client, ADP5589_GPO_DATA_OUT_A + bank,

		      kpad->dat_out[bank]);



	mutex_unlock(&kpad->gpio_lock);

}



static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off)

{

	struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);

	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);

	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);

	int ret;



	mutex_lock(&kpad->gpio_lock);



	kpad->dir[bank] &= ~bit;

	ret = adp5589_write(kpad->client, ADP5589_GPIO_DIRECTION_A + bank,

			    kpad->dir[bank]);



	mutex_unlock(&kpad->gpio_lock);



	return ret;

}



static int adp5589_gpio_direction_output(struct gpio_chip *chip,

					 unsigned off, int val)

{

	struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);

	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);

	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);

	int ret;



	mutex_lock(&kpad->gpio_lock);



	kpad->dir[bank] |= bit;



	if (val)

		kpad->dat_out[bank] |= bit;

	else

		kpad->dat_out[bank] &= ~bit;



	ret = adp5589_write(kpad->client, ADP5589_GPO_DATA_OUT_A + bank,

			    kpad->dat_out[bank]);

	ret |= adp5589_write(kpad->client, ADP5589_GPIO_DIRECTION_A + bank,

			     kpad->dir[bank]);



	mutex_unlock(&kpad->gpio_lock);



	return ret;

}



static int __devinit adp5589_build_gpiomap(struct adp5589_kpad *kpad,

				const struct adp5589_kpad_platform_data *pdata)

{

	bool pin_used[MAXGPIO];

	int n_unused = 0;

	int i;



	memset(pin_used, false, sizeof(pin_used));



	for (i = 0; i < MAXGPIO; i++)

		if (pdata->keypad_en_mask & (1 << i))

			pin_used[i] = true;



	for (i = 0; i < kpad->gpimapsize; i++)

		pin_used[kpad->gpimap[i].pin - ADP5589_GPI_PIN_BASE] = true;



	if (kpad->extend_cfg & R4_EXTEND_CFG)

		pin_used[4] = true;



	if (kpad->extend_cfg & C4_EXTEND_CFG)

		pin_used[12] = true;



	for (i = 0; i < MAXGPIO; i++)

		if (!pin_used[i])

			kpad->gpiomap[n_unused++] = i;



	return n_unused;

}



static int __devinit adp5589_gpio_add(struct adp5589_kpad *kpad)

{

	struct device *dev = &kpad->client->dev;

	const struct adp5589_kpad_platform_data *pdata = dev->platform_data;

	const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;

	int i, error;



	if (!gpio_data)

		return 0;



	kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata);

	if (kpad->gc.ngpio == 0) {

		dev_info(dev, "No unused gpios left to export\n");

		return 0;

	}



	kpad->export_gpio = true;



	kpad->gc.direction_input = adp5589_gpio_direction_input;

	kpad->gc.direction_output = adp5589_gpio_direction_output;

	kpad->gc.get = adp5589_gpio_get_value;

	kpad->gc.set = adp5589_gpio_set_value;

	kpad->gc.can_sleep = 1;



	kpad->gc.base = gpio_data->gpio_start;

	kpad->gc.label = kpad->client->name;

	kpad->gc.owner = THIS_MODULE;



	mutex_init(&kpad->gpio_lock);



	error = gpiochip_add(&kpad->gc);

	if (error) {

		dev_err(dev, "gpiochip_add failed, err: %d\n", error);

		return error;

	}



	for (i = 0; i <= ADP_BANK(MAXGPIO); i++) {

		kpad->dat_out[i] = adp5589_read(kpad->client,

						ADP5589_GPO_DATA_OUT_A + i);

		kpad->dir[i] = adp5589_read(kpad->client,

					    ADP5589_GPIO_DIRECTION_A + i);

	}



	if (gpio_data->setup) {

		error = gpio_data->setup(kpad->client,

					 kpad->gc.base, kpad->gc.ngpio,

					 gpio_data->context);

		if (error)

			dev_warn(dev, "setup failed, %d\n", error);

	}



	return 0;

}



static void __devexit adp5589_gpio_remove(struct adp5589_kpad *kpad)

{

	struct device *dev = &kpad->client->dev;

	const struct adp5589_kpad_platform_data *pdata = dev->platform_data;

	const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;

	int error;



	if (!kpad->export_gpio)

		return;



	if (gpio_data->teardown) {

		error = gpio_data->teardown(kpad->client,

					    kpad->gc.base, kpad->gc.ngpio,

					    gpio_data->context);

		if (error)

			dev_warn(dev, "teardown failed %d\n", error);

	}



	error = gpiochip_remove(&kpad->gc);

	if (error)

		dev_warn(dev, "gpiochip_remove failed %d\n", error);

}

#else

static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)

{

	return 0;

}



static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)

{

}

#endif



static void adp5589_report_switches(struct adp5589_kpad *kpad,

				    int key, int key_val)

{

	int i;



	for (i = 0; i < kpad->gpimapsize; i++) {

		if (key_val == kpad->gpimap[i].pin) {

			input_report_switch(kpad->input,

					    kpad->gpimap[i].sw_evt,

					    key & KEY_EV_PRESSED);

			break;

		}

	}

}



static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt)

{

	int i;



	for (i = 0; i < ev_cnt; i++) {

		int key = adp5589_read(kpad->client, ADP5589_FIFO_1 + i);

		int key_val = key & KEY_EV_MASK;



		if (key_val >= ADP5589_GPI_PIN_BASE &&

		    key_val <= ADP5589_GPI_PIN_END) {

			adp5589_report_switches(kpad, key, key_val);

		} else {

			input_report_key(kpad->input,

					 kpad->keycode[key_val - 1],

					 key & KEY_EV_PRESSED);

		}

	}

}



static irqreturn_t adp5589_irq(int irq, void *handle)

{

	struct adp5589_kpad *kpad = handle;

	struct i2c_client *client = kpad->client;

	int status, ev_cnt;



	status = adp5589_read(client, ADP5589_INT_STATUS);



	if (status & OVRFLOW_INT)	/* Unlikely and should never happen */

		dev_err(&client->dev, "Event Overflow Error\n");



	if (status & EVENT_INT) {

		ev_cnt = adp5589_read(client, ADP5589_STATUS) & KEC;

		if (ev_cnt) {

			adp5589_report_events(kpad, ev_cnt);

			input_sync(kpad->input);

		}

	}



	adp5589_write(client, ADP5589_INT_STATUS, status);	/* Status is W1C */



	return IRQ_HANDLED;

}



static int __devinit adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)

{

	int i;



	for (i = 0; i < ADP5589_KEYMAPSIZE; i++)

		if (key == kpad->keycode[i])

			return (i + 1) | KEY_EV_PRESSED;



	dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n");



	return -EINVAL;

}



static int __devinit adp5589_setup(struct adp5589_kpad *kpad)

{

	struct i2c_client *client = kpad->client;

	const struct adp5589_kpad_platform_data *pdata =

	    client->dev.platform_data;

	int i, ret;

	unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;

	unsigned char pull_mask = 0;



	ret = adp5589_write(client, ADP5589_PIN_CONFIG_A,

			    pdata->keypad_en_mask & 0xFF);

	ret |= adp5589_write(client, ADP5589_PIN_CONFIG_B,

			     (pdata->keypad_en_mask >> 8) & 0xFF);

	ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,

			     (pdata->keypad_en_mask >> 16) & 0xFF);



	if (pdata->en_keylock) {

		ret |= adp5589_write(client, ADP5589_UNLOCK1,

				     pdata->unlock_key1);

		ret |= adp5589_write(client, ADP5589_UNLOCK2,

				     pdata->unlock_key2);

		ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS,

				     pdata->unlock_timer & LTIME_MASK);

		ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN);

	}



	for (i = 0; i < KEYP_MAX_EVENT; i++)

		ret |= adp5589_read(client, ADP5589_FIFO_1 + i);



	for (i = 0; i < pdata->gpimapsize; i++) {

		unsigned short pin = pdata->gpimap[i].pin;



		if (pin <= ADP5589_GPI_PIN_ROW_END) {

			evt_mode1 |= (1 << (pin - ADP5589_GPI_PIN_ROW_BASE));

		} else {

			evt_mode2 |=

			    ((1 << (pin - ADP5589_GPI_PIN_COL_BASE)) & 0xFF);

			evt_mode3 |=

			    ((1 << (pin - ADP5589_GPI_PIN_COL_BASE)) >> 8);

		}

	}



	if (pdata->gpimapsize) {

		ret |= adp5589_write(client, ADP5589_GPI_EVENT_EN_A, evt_mode1);

		ret |= adp5589_write(client, ADP5589_GPI_EVENT_EN_B, evt_mode2);

		ret |= adp5589_write(client, ADP5589_GPI_EVENT_EN_C, evt_mode3);

	}



	if (pdata->pull_dis_mask & pdata->pullup_en_100k &

	    pdata->pullup_en_300k & pdata->pulldown_en_300k)

		dev_warn(&client->dev, "Conflicting pull resistor config\n");



	for (i = 0; i < MAXGPIO; i++) {

		unsigned val = 0;



		if (pdata->pullup_en_300k & (1 << i))

			val = 0;

		else if (pdata->pulldown_en_300k & (1 << i))

			val = 1;

		else if (pdata->pullup_en_100k & (1 << i))

			val = 2;

		else if (pdata->pull_dis_mask & (1 << i))

			val = 3;



		pull_mask |= val << (2 * (i & 0x3));



		if ((i & 0x3) == 0x3 || i == MAXGPIO - 1) {

			ret |= adp5589_write(client,

					     ADP5589_RPULL_CONFIG_A + (i >> 2),

					     pull_mask);

			pull_mask = 0;

		}

	}



	if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) {

		ret |= adp5589_write(client, ADP5589_RESET1_EVENT_A,

				     adp5589_get_evcode(kpad,

							pdata->reset1_key_1));

		ret |= adp5589_write(client, ADP5589_RESET1_EVENT_B,

				     adp5589_get_evcode(kpad,

							pdata->reset1_key_2));

		ret |= adp5589_write(client, ADP5589_RESET1_EVENT_C,

				     adp5589_get_evcode(kpad,

							pdata->reset1_key_3));

		kpad->extend_cfg |= R4_EXTEND_CFG;

	}



	if (pdata->reset2_key_1 && pdata->reset2_key_2) {

		ret |= adp5589_write(client, ADP5589_RESET2_EVENT_A,

				     adp5589_get_evcode(kpad,

							pdata->reset2_key_1));

		ret |= adp5589_write(client, ADP5589_RESET2_EVENT_B,

				     adp5589_get_evcode(kpad,

							pdata->reset2_key_2));

		kpad->extend_cfg |= C4_EXTEND_CFG;

	}



	if (kpad->extend_cfg) {

		ret |= adp5589_write(client, ADP5589_RESET_CFG,

				     pdata->reset_cfg);

		ret |= adp5589_write(client, ADP5589_PIN_CONFIG_D,

				     kpad->extend_cfg);

	}



	for (i = 0; i <= ADP_BANK(MAXGPIO); i++)

		ret |= adp5589_write(client, ADP5589_DEBOUNCE_DIS_A + i,

				     pdata->debounce_dis_mask >> (i * 8));



	ret |= adp5589_write(client, ADP5589_POLL_PTIME_CFG,

			     pdata->scan_cycle_time & PTIME_MASK);

	ret |= adp5589_write(client, ADP5589_INT_STATUS, LOGIC2_INT |

			     LOGIC1_INT | OVRFLOW_INT | LOCK_INT |

			     GPI_INT | EVENT_INT);	/* Status is W1C */



	ret |= adp5589_write(client, ADP5589_GENERAL_CFG,

			     INT_CFG | OSC_EN | CORE_CLK(3));

	ret |= adp5589_write(client, ADP5589_INT_EN,

			     OVRFLOW_IEN | GPI_IEN | EVENT_IEN);



	if (ret < 0) {

		dev_err(&client->dev, "Write Error\n");

		return ret;

	}



	return 0;

}



static void __devinit adp5589_report_switch_state(struct adp5589_kpad *kpad)

{

	int gpi_stat1 = adp5589_read(kpad->client, ADP5589_GPI_STATUS_A);

	int gpi_stat2 = adp5589_read(kpad->client, ADP5589_GPI_STATUS_B);

	int gpi_stat3 = adp5589_read(kpad->client, ADP5589_GPI_STATUS_C);

	int gpi_stat_tmp, pin_loc;

	int i;



	for (i = 0; i < kpad->gpimapsize; i++) {

		unsigned short pin = kpad->gpimap[i].pin;



		if (pin <= ADP5589_GPI_PIN_ROW_END) {

			gpi_stat_tmp = gpi_stat1;

			pin_loc = pin - ADP5589_GPI_PIN_ROW_BASE;

		} else if ((pin - ADP5589_GPI_PIN_COL_BASE) < 8) {

			gpi_stat_tmp = gpi_stat2;

			pin_loc = pin - ADP5589_GPI_PIN_COL_BASE;

		} else {

			gpi_stat_tmp = gpi_stat3;

			pin_loc = pin - ADP5589_GPI_PIN_COL_BASE - 8;

		}



		if (gpi_stat_tmp < 0) {

			dev_err(&kpad->client->dev,

				"Can't read GPIO_DAT_STAT switch"

				" %d default to OFF\n", pin);

			gpi_stat_tmp = 0;

		}



		input_report_switch(kpad->input,

				    kpad->gpimap[i].sw_evt,

				    !(gpi_stat_tmp & (1 << pin_loc)));

	}



	input_sync(kpad->input);

}



static int __devinit adp5589_probe(struct i2c_client *client,

				   const struct i2c_device_id *id)

{

	struct adp5589_kpad *kpad;

	const struct adp5589_kpad_platform_data *pdata;

	struct input_dev *input;

	unsigned int revid;

	int ret, i;

	int error;



	if (!i2c_check_functionality(client->adapter,

				     I2C_FUNC_SMBUS_BYTE_DATA)) {

		dev_err(&client->dev, "SMBUS Byte Data not Supported\n");

		return -EIO;

	}



	pdata = client->dev.platform_data;

	if (!pdata) {

		dev_err(&client->dev, "no platform data?\n");

		return -EINVAL;

	}



	if (!((pdata->keypad_en_mask & 0xFF) &&

			(pdata->keypad_en_mask >> 8)) || !pdata->keymap) {

		dev_err(&client->dev, "no rows, cols or keymap from pdata\n");

		return -EINVAL;

	}



	if (pdata->keymapsize != ADP5589_KEYMAPSIZE) {

		dev_err(&client->dev, "invalid keymapsize\n");

		return -EINVAL;

	}



	if (!pdata->gpimap && pdata->gpimapsize) {

		dev_err(&client->dev, "invalid gpimap from pdata\n");

		return -EINVAL;

	}



	if (pdata->gpimapsize > ADP5589_GPIMAPSIZE_MAX) {

		dev_err(&client->dev, "invalid gpimapsize\n");

		return -EINVAL;

	}



	for (i = 0; i < pdata->gpimapsize; i++) {

		unsigned short pin = pdata->gpimap[i].pin;



		if (pin < ADP5589_GPI_PIN_BASE || pin > ADP5589_GPI_PIN_END) {

			dev_err(&client->dev, "invalid gpi pin data\n");

			return -EINVAL;

		}



		if ((1 << (pin - ADP5589_GPI_PIN_ROW_BASE)) &

				pdata->keypad_en_mask) {

			dev_err(&client->dev, "invalid gpi row/col data\n");

			return -EINVAL;

		}

	}



	if (!client->irq) {

		dev_err(&client->dev, "no IRQ?\n");

		return -EINVAL;

	}



	kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);

	input = input_allocate_device();

	if (!kpad || !input) {

		error = -ENOMEM;

		goto err_free_mem;

	}



	kpad->client = client;

	kpad->input = input;



	ret = adp5589_read(client, ADP5589_ID);

	if (ret < 0) {

		error = ret;

		goto err_free_mem;

	}



	revid = (u8) ret & ADP5589_DEVICE_ID_MASK;



	input->name = client->name;

	input->phys = "adp5589-keys/input0";

	input->dev.parent = &client->dev;



	input_set_drvdata(input, kpad);



	input->id.bustype = BUS_I2C;

	input->id.vendor = 0x0001;

	input->id.product = 0x0001;

	input->id.version = revid;



	input->keycodesize = sizeof(kpad->keycode[0]);

	input->keycodemax = pdata->keymapsize;

	input->keycode = kpad->keycode;



	memcpy(kpad->keycode, pdata->keymap,

	       pdata->keymapsize * input->keycodesize);



	kpad->gpimap = pdata->gpimap;

	kpad->gpimapsize = pdata->gpimapsize;



	/* setup input device */

	__set_bit(EV_KEY, input->evbit);



	if (pdata->repeat)

		__set_bit(EV_REP, input->evbit);



	for (i = 0; i < input->keycodemax; i++)

		__set_bit(kpad->keycode[i] & KEY_MAX, input->keybit);

	__clear_bit(KEY_RESERVED, input->keybit);



	if (kpad->gpimapsize)

		__set_bit(EV_SW, input->evbit);

	for (i = 0; i < kpad->gpimapsize; i++)

		__set_bit(kpad->gpimap[i].sw_evt, input->swbit);



	error = input_register_device(input);

	if (error) {

		dev_err(&client->dev, "unable to register input device\n");

		goto err_free_mem;

	}



	error = request_threaded_irq(client->irq, NULL, adp5589_irq,

				     IRQF_TRIGGER_FALLING | IRQF_ONESHOT,

				     client->dev.driver->name, kpad);

	if (error) {

		dev_err(&client->dev, "irq %d busy?\n", client->irq);

		goto err_unreg_dev;

	}



	error = adp5589_setup(kpad);

	if (error)

		goto err_free_irq;



	if (kpad->gpimapsize)

		adp5589_report_switch_state(kpad);



	error = adp5589_gpio_add(kpad);

	if (error)

		goto err_free_irq;



	device_init_wakeup(&client->dev, 1);

	i2c_set_clientdata(client, kpad);



	dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);

	return 0;



err_free_irq:

	free_irq(client->irq, kpad);

err_unreg_dev:

	input_unregister_device(input);

	input = NULL;

err_free_mem:

	input_free_device(input);

	kfree(kpad);



	return error;

}



static int __devexit adp5589_remove(struct i2c_client *client)

{

	struct adp5589_kpad *kpad = i2c_get_clientdata(client);



	adp5589_write(client, ADP5589_GENERAL_CFG, 0);

	free_irq(client->irq, kpad);

	input_unregister_device(kpad->input);

	adp5589_gpio_remove(kpad);

	kfree(kpad);



	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int adp5589_suspend(struct device *dev)

{

	struct adp5589_kpad *kpad = dev_get_drvdata(dev);

	struct i2c_client *client = kpad->client;



	disable_irq(client->irq);



	if (device_may_wakeup(&client->dev))

		enable_irq_wake(client->irq);



	return 0;

}



static int adp5589_resume(struct device *dev)

{

	struct adp5589_kpad *kpad = dev_get_drvdata(dev);

	struct i2c_client *client = kpad->client;



	if (device_may_wakeup(&client->dev))

		disable_irq_wake(client->irq);



	enable_irq(client->irq);



	return 0;

}

#endif



static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);



static const struct i2c_device_id adp5589_id[] = {

	{"adp5589-keys", 0},

	{}

};



MODULE_DEVICE_TABLE(i2c, adp5589_id);



static struct i2c_driver adp5589_driver = {

	.driver = {

		.name = KBUILD_MODNAME,

		.owner = THIS_MODULE,

		.pm = &adp5589_dev_pm_ops,

	},

	.probe = adp5589_probe,

	.remove = __devexit_p(adp5589_remove),

	.id_table = adp5589_id,

};



static int __init adp5589_init(void)

{

	return i2c_add_driver(&adp5589_driver);

}

module_init(adp5589_init);



static void __exit adp5589_exit(void)

{

	i2c_del_driver(&adp5589_driver);

}

module_exit(adp5589_exit);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");

MODULE_DESCRIPTION("ADP5589 Keypad driver");

include/linux/input/adp5589.h

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