[net-next-2.6.git] / drivers / input / keyboard / adp5588-keys.c

/*
 * File: drivers/input/keyboard/adp5588_keys.c
 * Description:  keypad driver for ADP5588 and ADP5587
 *		 I2C QWERTY Keypad and IO Expander
 * Bugs: Enter bugs at http://blackfin.uclinux.org/
 *
 * Copyright (C) 2008-2010 Analog Devices Inc.
 * Licensed under the GPL-2 or later.
 */

#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/i2c/adp5588.h>

/* Key Event Register xy */
#define KEY_EV_PRESSED		(1 << 7)
#define KEY_EV_MASK		(0x7F)

#define KP_SEL(x)		(0xFFFF >> (16 - x))	/* 2^x-1 */

#define KEYP_MAX_EVENT		10

/*
 * Early pre 4.0 Silicon required to delay readout by at least 25ms,
 * since the Event Counter Register updated 25ms after the interrupt
 * asserted.
 */
#define WA_DELAYED_READOUT_REVID(rev)		((rev) < 4)

struct adp5588_kpad {
	struct i2c_client *client;
	struct input_dev *input;
	struct delayed_work work;
	unsigned long delay;
	unsigned short keycode[ADP5588_KEYMAPSIZE];
	const struct adp5588_gpi_map *gpimap;
	unsigned short gpimapsize;
#ifdef CONFIG_GPIOLIB
	unsigned char gpiomap[ADP5588_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 adp5588_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 adp5588_write(struct i2c_client *client, u8 reg, u8 val)
{
	return i2c_smbus_write_byte_data(client, reg, val);
}

#ifdef CONFIG_GPIOLIB
static int adp5588_gpio_get_value(struct gpio_chip *chip, unsigned off)
{
	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);

	return !!(adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank) & bit);
}

static void adp5588_gpio_set_value(struct gpio_chip *chip,
				   unsigned off, int val)
{
	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);

	mutex_lock(&kpad->gpio_lock);

	if (val)
		kpad->dat_out[bank] |= bit;
	else
		kpad->dat_out[bank] &= ~bit;

	adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
			   kpad->dat_out[bank]);

	mutex_unlock(&kpad->gpio_lock);
}

static int adp5588_gpio_direction_input(struct gpio_chip *chip, unsigned off)
{
	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
	int ret;

	mutex_lock(&kpad->gpio_lock);

	kpad->dir[bank] &= ~bit;
	ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);

	mutex_unlock(&kpad->gpio_lock);

	return ret;
}

static int adp5588_gpio_direction_output(struct gpio_chip *chip,
					 unsigned off, int val)
{
	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
	unsigned int bit = ADP5588_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 = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
				 kpad->dat_out[bank]);
	ret |= adp5588_write(kpad->client, GPIO_DIR1 + bank,
				 kpad->dir[bank]);

	mutex_unlock(&kpad->gpio_lock);

	return ret;
}

static int __devinit adp5588_build_gpiomap(struct adp5588_kpad *kpad,
				const struct adp5588_kpad_platform_data *pdata)
{
	bool pin_used[ADP5588_MAXGPIO];
	int n_unused = 0;
	int i;

	memset(pin_used, 0, sizeof(pin_used));

	for (i = 0; i < pdata->rows; i++)
		pin_used[i] = true;

	for (i = 0; i < pdata->cols; i++)
		pin_used[i + GPI_PIN_COL_BASE - GPI_PIN_BASE] = true;

	for (i = 0; i < kpad->gpimapsize; i++)
		pin_used[kpad->gpimap[i].pin - GPI_PIN_BASE] = true;

	for (i = 0; i < ADP5588_MAXGPIO; i++)
		if (!pin_used[i])
			kpad->gpiomap[n_unused++] = i;

	return n_unused;
}

static int __devinit adp5588_gpio_add(struct adp5588_kpad *kpad)
{
	struct device *dev = &kpad->client->dev;
	const struct adp5588_kpad_platform_data *pdata = dev->platform_data;
	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
	int i, error;

	if (!gpio_data)
		return 0;

	kpad->gc.ngpio = adp5588_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 = adp5588_gpio_direction_input;
	kpad->gc.direction_output = adp5588_gpio_direction_output;
	kpad->gc.get = adp5588_gpio_get_value;
	kpad->gc.set = adp5588_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 <= ADP5588_BANK(ADP5588_MAXGPIO); i++) {
		kpad->dat_out[i] = adp5588_read(kpad->client,
						GPIO_DAT_OUT1 + i);
		kpad->dir[i] = adp5588_read(kpad->client, GPIO_DIR1 + 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 adp5588_gpio_remove(struct adp5588_kpad *kpad)
{
	struct device *dev = &kpad->client->dev;
	const struct adp5588_kpad_platform_data *pdata = dev->platform_data;
	const struct adp5588_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 adp5588_gpio_add(struct adp5588_kpad *kpad)
{
	return 0;
}

static inline void adp5588_gpio_remove(struct adp5588_kpad *kpad)
{
}
#endif

static void adp5588_report_events(struct adp5588_kpad *kpad, int ev_cnt)
{
	int i, j;

	for (i = 0; i < ev_cnt; i++) {
		int key = adp5588_read(kpad->client, Key_EVENTA + i);
		int key_val = key & KEY_EV_MASK;

		if (key_val >= GPI_PIN_BASE && key_val <= GPI_PIN_END) {
			for (j = 0; j < kpad->gpimapsize; j++) {
				if (key_val == kpad->gpimap[j].pin) {
					input_report_switch(kpad->input,
							kpad->gpimap[j].sw_evt,
							key & KEY_EV_PRESSED);
					break;
				}
			}
		} else {
			input_report_key(kpad->input,
					 kpad->keycode[key_val - 1],
					 key & KEY_EV_PRESSED);
		}
	}
}

static void adp5588_work(struct work_struct *work)
{
	struct adp5588_kpad *kpad = container_of(work,
						struct adp5588_kpad, work.work);
	struct i2c_client *client = kpad->client;
	int status, ev_cnt;

	status = adp5588_read(client, INT_STAT);

	if (status & ADP5588_OVR_FLOW_INT)	/* Unlikely and should never happen */
		dev_err(&client->dev, "Event Overflow Error\n");

	if (status & ADP5588_KE_INT) {
		ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & ADP5588_KEC;
		if (ev_cnt) {
			adp5588_report_events(kpad, ev_cnt);
			input_sync(kpad->input);
		}
	}
	adp5588_write(client, INT_STAT, status); /* Status is W1C */
}

static irqreturn_t adp5588_irq(int irq, void *handle)
{
	struct adp5588_kpad *kpad = handle;

	/*
	 * use keventd context to read the event fifo registers
	 * Schedule readout at least 25ms after notification for
	 * REVID < 4
	 */

	schedule_delayed_work(&kpad->work, kpad->delay);

	return IRQ_HANDLED;
}

static int __devinit adp5588_setup(struct i2c_client *client)
{
	const struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
	int i, ret;
	unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;

	ret = adp5588_write(client, KP_GPIO1, KP_SEL(pdata->rows));
	ret |= adp5588_write(client, KP_GPIO2, KP_SEL(pdata->cols) & 0xFF);
	ret |= adp5588_write(client, KP_GPIO3, KP_SEL(pdata->cols) >> 8);

	if (pdata->en_keylock) {
		ret |= adp5588_write(client, UNLOCK1, pdata->unlock_key1);
		ret |= adp5588_write(client, UNLOCK2, pdata->unlock_key2);
		ret |= adp5588_write(client, KEY_LCK_EC_STAT, ADP5588_K_LCK_EN);
	}

	for (i = 0; i < KEYP_MAX_EVENT; i++)
		ret |= adp5588_read(client, Key_EVENTA);

	for (i = 0; i < pdata->gpimapsize; i++) {
		unsigned short pin = pdata->gpimap[i].pin;

		if (pin <= GPI_PIN_ROW_END) {
			evt_mode1 |= (1 << (pin - GPI_PIN_ROW_BASE));
		} else {
			evt_mode2 |= ((1 << (pin - GPI_PIN_COL_BASE)) & 0xFF);
			evt_mode3 |= ((1 << (pin - GPI_PIN_COL_BASE)) >> 8);
		}
	}

	if (pdata->gpimapsize) {
		ret |= adp5588_write(client, GPI_EM1, evt_mode1);
		ret |= adp5588_write(client, GPI_EM2, evt_mode2);
		ret |= adp5588_write(client, GPI_EM3, evt_mode3);
	}

	if (gpio_data) {
		for (i = 0; i <= ADP5588_BANK(ADP5588_MAXGPIO); i++) {
			int pull_mask = gpio_data->pullup_dis_mask;

			ret |= adp5588_write(client, GPIO_PULL1 + i,
				(pull_mask >> (8 * i)) & 0xFF);
		}
	}

	ret |= adp5588_write(client, INT_STAT,
				ADP5588_CMP2_INT | ADP5588_CMP1_INT |
				ADP5588_OVR_FLOW_INT | ADP5588_K_LCK_INT |
				ADP5588_GPI_INT | ADP5588_KE_INT); /* Status is W1C */

	ret |= adp5588_write(client, CFG, ADP5588_INT_CFG |
					  ADP5588_OVR_FLOW_IEN |
					  ADP5588_KE_IEN);

	if (ret < 0) {
		dev_err(&client->dev, "Write Error\n");
		return ret;
	}

	return 0;
}

static void __devinit adp5588_report_switch_state(struct adp5588_kpad *kpad)
{
	int gpi_stat1 = adp5588_read(kpad->client, GPIO_DAT_STAT1);
	int gpi_stat2 = adp5588_read(kpad->client, GPIO_DAT_STAT2);
	int gpi_stat3 = adp5588_read(kpad->client, GPIO_DAT_STAT3);
	int gpi_stat_tmp, pin_loc;
	int i;

	for (i = 0; i < kpad->gpimapsize; i++) {
		unsigned short pin = kpad->gpimap[i].pin;

		if (pin <= GPI_PIN_ROW_END) {
			gpi_stat_tmp = gpi_stat1;
			pin_loc = pin - GPI_PIN_ROW_BASE;
		} else if ((pin - GPI_PIN_COL_BASE) < 8) {
			gpi_stat_tmp = gpi_stat2;
			pin_loc = pin - GPI_PIN_COL_BASE;
		} else {
			gpi_stat_tmp = gpi_stat3;
			pin_loc = pin - 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 adp5588_probe(struct i2c_client *client,
					const struct i2c_device_id *id)
{
	struct adp5588_kpad *kpad;
	const struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
	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;
	}

	if (!pdata) {
		dev_err(&client->dev, "no platform data?\n");
		return -EINVAL;
	}

	if (!pdata->rows || !pdata->cols || !pdata->keymap) {
		dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
		return -EINVAL;
	}

	if (pdata->keymapsize != ADP5588_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 > ADP5588_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 < GPI_PIN_BASE || pin > GPI_PIN_END) {
			dev_err(&client->dev, "invalid gpi pin data\n");
			return -EINVAL;
		}

		if (pin <= GPI_PIN_ROW_END) {
			if (pin - GPI_PIN_ROW_BASE + 1 <= pdata->rows) {
				dev_err(&client->dev, "invalid gpi row data\n");
				return -EINVAL;
			}
		} else {
			if (pin - GPI_PIN_COL_BASE + 1 <= pdata->cols) {
				dev_err(&client->dev, "invalid gpi 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;
	INIT_DELAYED_WORK(&kpad->work, adp5588_work);

	ret = adp5588_read(client, DEV_ID);
	if (ret < 0) {
		error = ret;
		goto err_free_mem;
	}

	revid = (u8) ret & ADP5588_DEVICE_ID_MASK;
	if (WA_DELAYED_READOUT_REVID(revid))
		kpad->delay = msecs_to_jiffies(30);

	input->name = client->name;
	input->phys = "adp5588-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_irq(client->irq, adp5588_irq,
			    IRQF_TRIGGER_FALLING | IRQF_DISABLED,
			    client->dev.driver->name, kpad);
	if (error) {
		dev_err(&client->dev, "irq %d busy?\n", client->irq);
		goto err_unreg_dev;
	}

	error = adp5588_setup(client);
	if (error)
		goto err_free_irq;

	if (kpad->gpimapsize)
		adp5588_report_switch_state(kpad);

	error = adp5588_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 adp5588_remove(struct i2c_client *client)
{
	struct adp5588_kpad *kpad = i2c_get_clientdata(client);

	adp5588_write(client, CFG, 0);
	free_irq(client->irq, kpad);
	cancel_delayed_work_sync(&kpad->work);
	input_unregister_device(kpad->input);
	adp5588_gpio_remove(kpad);
	kfree(kpad);

	return 0;
}

#ifdef CONFIG_PM
static int adp5588_suspend(struct device *dev)
{
	struct adp5588_kpad *kpad = dev_get_drvdata(dev);
	struct i2c_client *client = kpad->client;

	disable_irq(client->irq);
	cancel_delayed_work_sync(&kpad->work);

	if (device_may_wakeup(&client->dev))
		enable_irq_wake(client->irq);

	return 0;
}

static int adp5588_resume(struct device *dev)
{
	struct adp5588_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;
}

static const struct dev_pm_ops adp5588_dev_pm_ops = {
	.suspend = adp5588_suspend,
	.resume  = adp5588_resume,
};
#endif

static const struct i2c_device_id adp5588_id[] = {
	{ "adp5588-keys", 0 },
	{ "adp5587-keys", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, adp5588_id);

static struct i2c_driver adp5588_driver = {
	.driver = {
		.name = KBUILD_MODNAME,
#ifdef CONFIG_PM
		.pm   = &adp5588_dev_pm_ops,
#endif
	},
	.probe    = adp5588_probe,
	.remove   = __devexit_p(adp5588_remove),
	.id_table = adp5588_id,
};

static int __init adp5588_init(void)
{
	return i2c_add_driver(&adp5588_driver);
}
module_init(adp5588_init);

static void __exit adp5588_exit(void)
{
	i2c_del_driver(&adp5588_driver);
}
module_exit(adp5588_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP5588/87 Keypad driver");
MODULE_ALIAS("platform:adp5588-keys");
Commit	Line	Data
88751dd6 MH	1	/*
88751dd6 MH	2	* File: drivers/input/keyboard/adp5588_keys.c
5a9003db MH	3	* Description: keypad driver for ADP5588 and ADP5587
5a9003db MH	4	* I2C QWERTY Keypad and IO Expander
88751dd6 MH	5	* Bugs: Enter bugs at http://blackfin.uclinux.org/
88751dd6 MH	6	*
95716c0d	7	* Copyright (C) 2008-2010 Analog Devices Inc.
88751dd6 MH	8	* Licensed under the GPL-2 or later.
	9	*/
	10
	11	#include <linux/module.h>
	12	#include <linux/version.h>
	13	#include <linux/init.h>
	14	#include <linux/interrupt.h>
	15	#include <linux/irq.h>
	16	#include <linux/workqueue.h>
	17	#include <linux/errno.h>
	18	#include <linux/pm.h>
	19	#include <linux/platform_device.h>
	20	#include <linux/input.h>
	21	#include <linux/i2c.h>
ba9f507a	22	#include <linux/gpio.h>
5a0e3ad6	23	#include <linux/slab.h>
88751dd6 MH	24
	25	#include <linux/i2c/adp5588.h>
	26
88751dd6 MH	27	/* Key Event Register xy */
	28	#define KEY_EV_PRESSED (1 << 7)
	29	#define KEY_EV_MASK (0x7F)
	30
	31	#define KP_SEL(x) (0xFFFF >> (16 - x)) /* 2^x-1 */
	32
	33	#define KEYP_MAX_EVENT 10
	34
	35	/*
	36	* Early pre 4.0 Silicon required to delay readout by at least 25ms,
	37	* since the Event Counter Register updated 25ms after the interrupt
	38	* asserted.
	39	*/
	40	#define WA_DELAYED_READOUT_REVID(rev) ((rev) < 4)
	41
	42	struct adp5588_kpad {
	43	struct i2c_client *client;
	44	struct input_dev *input;
	45	struct delayed_work work;
	46	unsigned long delay;
	47	unsigned short keycode[ADP5588_KEYMAPSIZE];
69a4af60 XC	48	const struct adp5588_gpi_map *gpimap;
69a4af60 XC	49	unsigned short gpimapsize;
ba9f507a	50	#ifdef CONFIG_GPIOLIB
95716c0d	51	unsigned char gpiomap[ADP5588_MAXGPIO];
ba9f507a XC	52	bool export_gpio;
	53	struct gpio_chip gc;
	54	struct mutex gpio_lock; /* Protect cached dir, dat_out */
	55	u8 dat_out[3];
	56	u8 dir[3];
	57	#endif
88751dd6 MH	58	};
	59
	60	static int adp5588_read(struct i2c_client *client, u8 reg)
	61	{
	62	int ret = i2c_smbus_read_byte_data(client, reg);
	63
	64	if (ret < 0)
	65	dev_err(&client->dev, "Read Error\n");
	66
	67	return ret;
	68	}
	69
	70	static int adp5588_write(struct i2c_client *client, u8 reg, u8 val)
	71	{
	72	return i2c_smbus_write_byte_data(client, reg, val);
	73	}
	74
ba9f507a XC	75	#ifdef CONFIG_GPIOLIB
	76	static int adp5588_gpio_get_value(struct gpio_chip *chip, unsigned off)
	77	{
	78	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
95716c0d MH	79	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
95716c0d MH	80	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
ba9f507a XC	81
	82	return !!(adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank) & bit);
	83	}
	84
	85	static void adp5588_gpio_set_value(struct gpio_chip *chip,
	86	unsigned off, int val)
	87	{
	88	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
95716c0d MH	89	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
95716c0d MH	90	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
ba9f507a XC	91
	92	mutex_lock(&kpad->gpio_lock);
	93
	94	if (val)
	95	kpad->dat_out[bank] \|= bit;
	96	else
	97	kpad->dat_out[bank] &= ~bit;
	98
	99	adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
	100	kpad->dat_out[bank]);
	101
	102	mutex_unlock(&kpad->gpio_lock);
	103	}
	104
	105	static int adp5588_gpio_direction_input(struct gpio_chip *chip, unsigned off)
	106	{
	107	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
95716c0d MH	108	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
95716c0d MH	109	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
ba9f507a XC	110	int ret;
	111
	112	mutex_lock(&kpad->gpio_lock);
	113
	114	kpad->dir[bank] &= ~bit;
	115	ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);
	116
	117	mutex_unlock(&kpad->gpio_lock);
	118
	119	return ret;
	120	}
	121
	122	static int adp5588_gpio_direction_output(struct gpio_chip *chip,
	123	unsigned off, int val)
	124	{
	125	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
95716c0d MH	126	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
95716c0d MH	127	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
ba9f507a XC	128	int ret;
	129
	130	mutex_lock(&kpad->gpio_lock);
	131
	132	kpad->dir[bank] \|= bit;
	133
	134	if (val)
	135	kpad->dat_out[bank] \|= bit;
	136	else
	137	kpad->dat_out[bank] &= ~bit;
	138
	139	ret = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
	140	kpad->dat_out[bank]);
	141	ret \|= adp5588_write(kpad->client, GPIO_DIR1 + bank,
	142	kpad->dir[bank]);
	143
	144	mutex_unlock(&kpad->gpio_lock);
	145
	146	return ret;
	147	}
	148
0d87c722 DT	149	static int __devinit adp5588_build_gpiomap(struct adp5588_kpad *kpad,
0d87c722 DT	150	const struct adp5588_kpad_platform_data *pdata)
ba9f507a	151	{
95716c0d	152	bool pin_used[ADP5588_MAXGPIO];
0d87c722 DT	153	int n_unused = 0;
0d87c722 DT	154	int i;
ba9f507a	155
0d87c722	156	memset(pin_used, 0, sizeof(pin_used));
ba9f507a	157
0d87c722 DT	158	for (i = 0; i < pdata->rows; i++)
0d87c722 DT	159	pin_used[i] = true;
ba9f507a	160
0d87c722 DT	161	for (i = 0; i < pdata->cols; i++)
0d87c722 DT	162	pin_used[i + GPI_PIN_COL_BASE - GPI_PIN_BASE] = true;
ba9f507a	163
0d87c722 DT	164	for (i = 0; i < kpad->gpimapsize; i++)
0d87c722 DT	165	pin_used[kpad->gpimap[i].pin - GPI_PIN_BASE] = true;
ba9f507a	166
95716c0d	167	for (i = 0; i < ADP5588_MAXGPIO; i++)
0d87c722 DT	168	if (!pin_used[i])
0d87c722 DT	169	kpad->gpiomap[n_unused++] = i;
ba9f507a	170
0d87c722 DT	171	return n_unused;
0d87c722 DT	172	}
ba9f507a	173
0d87c722 DT	174	static int __devinit adp5588_gpio_add(struct adp5588_kpad *kpad)
	175	{
	176	struct device *dev = &kpad->client->dev;
	177	const struct adp5588_kpad_platform_data *pdata = dev->platform_data;
	178	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
	179	int i, error;
	180
	181	if (!gpio_data)
	182	return 0;
	183
	184	kpad->gc.ngpio = adp5588_build_gpiomap(kpad, pdata);
	185	if (kpad->gc.ngpio == 0) {
ba9f507a XC	186	dev_info(dev, "No unused gpios left to export\n");
	187	return 0;
	188	}
	189
0d87c722 DT	190	kpad->export_gpio = true;
0d87c722 DT	191
ba9f507a XC	192	kpad->gc.direction_input = adp5588_gpio_direction_input;
	193	kpad->gc.direction_output = adp5588_gpio_direction_output;
	194	kpad->gc.get = adp5588_gpio_get_value;
	195	kpad->gc.set = adp5588_gpio_set_value;
	196	kpad->gc.can_sleep = 1;
	197
	198	kpad->gc.base = gpio_data->gpio_start;
	199	kpad->gc.label = kpad->client->name;
	200	kpad->gc.owner = THIS_MODULE;
	201
	202	mutex_init(&kpad->gpio_lock);
	203
	204	error = gpiochip_add(&kpad->gc);
	205	if (error) {
	206	dev_err(dev, "gpiochip_add failed, err: %d\n", error);
	207	return error;
	208	}
	209
95716c0d	210	for (i = 0; i <= ADP5588_BANK(ADP5588_MAXGPIO); i++) {
ba9f507a XC	211	kpad->dat_out[i] = adp5588_read(kpad->client,
	212	GPIO_DAT_OUT1 + i);
	213	kpad->dir[i] = adp5588_read(kpad->client, GPIO_DIR1 + i);
	214	}
	215
	216	if (gpio_data->setup) {
	217	error = gpio_data->setup(kpad->client,
	218	kpad->gc.base, kpad->gc.ngpio,
	219	gpio_data->context);
	220	if (error)
	221	dev_warn(dev, "setup failed, %d\n", error);
	222	}
	223
	224	return 0;
	225	}
	226
0d87c722	227	static void __devexit adp5588_gpio_remove(struct adp5588_kpad *kpad)
ba9f507a	228	{
0d87c722	229	struct device *dev = &kpad->client->dev;
ba9f507a XC	230	const struct adp5588_kpad_platform_data *pdata = dev->platform_data;
	231	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
	232	int error;
	233
	234	if (!kpad->export_gpio)
	235	return;
	236
	237	if (gpio_data->teardown) {
	238	error = gpio_data->teardown(kpad->client,
	239	kpad->gc.base, kpad->gc.ngpio,
	240	gpio_data->context);
	241	if (error)
	242	dev_warn(dev, "teardown failed %d\n", error);
	243	}
	244
	245	error = gpiochip_remove(&kpad->gc);
	246	if (error)
	247	dev_warn(dev, "gpiochip_remove failed %d\n", error);
	248	}
	249	#else
0d87c722	250	static inline int adp5588_gpio_add(struct adp5588_kpad *kpad)
ba9f507a XC	251	{
	252	return 0;
	253	}
	254
0d87c722	255	static inline void adp5588_gpio_remove(struct adp5588_kpad *kpad)
ba9f507a XC	256	{
	257	}
	258	#endif
	259
69a4af60 XC	260	static void adp5588_report_events(struct adp5588_kpad *kpad, int ev_cnt)
	261	{
	262	int i, j;
	263
	264	for (i = 0; i < ev_cnt; i++) {
	265	int key = adp5588_read(kpad->client, Key_EVENTA + i);
	266	int key_val = key & KEY_EV_MASK;
	267
	268	if (key_val >= GPI_PIN_BASE && key_val <= GPI_PIN_END) {
	269	for (j = 0; j < kpad->gpimapsize; j++) {
	270	if (key_val == kpad->gpimap[j].pin) {
	271	input_report_switch(kpad->input,
	272	kpad->gpimap[j].sw_evt,
	273	key & KEY_EV_PRESSED);
	274	break;
	275	}
	276	}
	277	} else {
	278	input_report_key(kpad->input,
	279	kpad->keycode[key_val - 1],
	280	key & KEY_EV_PRESSED);
	281	}
	282	}
	283	}
	284
88751dd6 MH	285	static void adp5588_work(struct work_struct *work)
	286	{
	287	struct adp5588_kpad *kpad = container_of(work,
	288	struct adp5588_kpad, work.work);
	289	struct i2c_client *client = kpad->client;
69a4af60	290	int status, ev_cnt;
88751dd6 MH	291
	292	status = adp5588_read(client, INT_STAT);
	293
95716c0d	294	if (status & ADP5588_OVR_FLOW_INT) /* Unlikely and should never happen */
88751dd6 MH	295	dev_err(&client->dev, "Event Overflow Error\n");
88751dd6 MH	296
95716c0d MH	297	if (status & ADP5588_KE_INT) {
95716c0d MH	298	ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & ADP5588_KEC;
88751dd6	299	if (ev_cnt) {
69a4af60	300	adp5588_report_events(kpad, ev_cnt);
88751dd6 MH	301	input_sync(kpad->input);
	302	}
	303	}
	304	adp5588_write(client, INT_STAT, status); /* Status is W1C */
	305	}
	306
	307	static irqreturn_t adp5588_irq(int irq, void *handle)
	308	{
	309	struct adp5588_kpad *kpad = handle;
	310
	311	/*
	312	* use keventd context to read the event fifo registers
	313	* Schedule readout at least 25ms after notification for
	314	* REVID < 4
	315	*/
	316
	317	schedule_delayed_work(&kpad->work, kpad->delay);
	318
	319	return IRQ_HANDLED;
	320	}
	321
	322	static int __devinit adp5588_setup(struct i2c_client *client)
	323	{
ba9f507a XC	324	const struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
ba9f507a XC	325	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
88751dd6	326	int i, ret;
69a4af60	327	unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
88751dd6 MH	328
	329	ret = adp5588_write(client, KP_GPIO1, KP_SEL(pdata->rows));
	330	ret \|= adp5588_write(client, KP_GPIO2, KP_SEL(pdata->cols) & 0xFF);
	331	ret \|= adp5588_write(client, KP_GPIO3, KP_SEL(pdata->cols) >> 8);
	332
	333	if (pdata->en_keylock) {
	334	ret \|= adp5588_write(client, UNLOCK1, pdata->unlock_key1);
	335	ret \|= adp5588_write(client, UNLOCK2, pdata->unlock_key2);
95716c0d	336	ret \|= adp5588_write(client, KEY_LCK_EC_STAT, ADP5588_K_LCK_EN);
88751dd6 MH	337	}
	338
	339	for (i = 0; i < KEYP_MAX_EVENT; i++)
	340	ret \|= adp5588_read(client, Key_EVENTA);
	341
69a4af60 XC	342	for (i = 0; i < pdata->gpimapsize; i++) {
	343	unsigned short pin = pdata->gpimap[i].pin;
	344
	345	if (pin <= GPI_PIN_ROW_END) {
	346	evt_mode1 \|= (1 << (pin - GPI_PIN_ROW_BASE));
	347	} else {
	348	evt_mode2 \|= ((1 << (pin - GPI_PIN_COL_BASE)) & 0xFF);
	349	evt_mode3 \|= ((1 << (pin - GPI_PIN_COL_BASE)) >> 8);
	350	}
	351	}
	352
	353	if (pdata->gpimapsize) {
	354	ret \|= adp5588_write(client, GPI_EM1, evt_mode1);
	355	ret \|= adp5588_write(client, GPI_EM2, evt_mode2);
	356	ret \|= adp5588_write(client, GPI_EM3, evt_mode3);
	357	}
	358
ba9f507a	359	if (gpio_data) {
95716c0d	360	for (i = 0; i <= ADP5588_BANK(ADP5588_MAXGPIO); i++) {
ba9f507a XC	361	int pull_mask = gpio_data->pullup_dis_mask;
	362
	363	ret \|= adp5588_write(client, GPIO_PULL1 + i,
	364	(pull_mask >> (8 * i)) & 0xFF);
	365	}
	366	}
	367
95716c0d MH	368	ret \|= adp5588_write(client, INT_STAT,
	369	ADP5588_CMP2_INT \| ADP5588_CMP1_INT \|
	370	ADP5588_OVR_FLOW_INT \| ADP5588_K_LCK_INT \|
	371	ADP5588_GPI_INT \| ADP5588_KE_INT); /* Status is W1C */
88751dd6	372
95716c0d MH	373	ret \|= adp5588_write(client, CFG, ADP5588_INT_CFG \|
	374	ADP5588_OVR_FLOW_IEN \|
	375	ADP5588_KE_IEN);
88751dd6 MH	376
	377	if (ret < 0) {
	378	dev_err(&client->dev, "Write Error\n");
	379	return ret;
	380	}
	381
	382	return 0;
	383	}
	384
69a4af60 XC	385	static void __devinit adp5588_report_switch_state(struct adp5588_kpad *kpad)
	386	{
	387	int gpi_stat1 = adp5588_read(kpad->client, GPIO_DAT_STAT1);
	388	int gpi_stat2 = adp5588_read(kpad->client, GPIO_DAT_STAT2);
	389	int gpi_stat3 = adp5588_read(kpad->client, GPIO_DAT_STAT3);
	390	int gpi_stat_tmp, pin_loc;
	391	int i;
	392
	393	for (i = 0; i < kpad->gpimapsize; i++) {
	394	unsigned short pin = kpad->gpimap[i].pin;
	395
	396	if (pin <= GPI_PIN_ROW_END) {
	397	gpi_stat_tmp = gpi_stat1;
	398	pin_loc = pin - GPI_PIN_ROW_BASE;
	399	} else if ((pin - GPI_PIN_COL_BASE) < 8) {
	400	gpi_stat_tmp = gpi_stat2;
	401	pin_loc = pin - GPI_PIN_COL_BASE;
	402	} else {
	403	gpi_stat_tmp = gpi_stat3;
	404	pin_loc = pin - GPI_PIN_COL_BASE - 8;
	405	}
	406
	407	if (gpi_stat_tmp < 0) {
	408	dev_err(&kpad->client->dev,
	409	"Can't read GPIO_DAT_STAT switch %d default to OFF\n",
	410	pin);
	411	gpi_stat_tmp = 0;
	412	}
	413
	414	input_report_switch(kpad->input,
	415	kpad->gpimap[i].sw_evt,
	416	!(gpi_stat_tmp & (1 << pin_loc)));
	417	}
	418
	419	input_sync(kpad->input);
	420	}
	421
	422
88751dd6 MH	423	static int __devinit adp5588_probe(struct i2c_client *client,
	424	const struct i2c_device_id *id)
	425	{
	426	struct adp5588_kpad *kpad;
ba9f507a	427	const struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
88751dd6 MH	428	struct input_dev *input;
	429	unsigned int revid;
	430	int ret, i;
	431	int error;
	432
	433	if (!i2c_check_functionality(client->adapter,
	434	I2C_FUNC_SMBUS_BYTE_DATA)) {
	435	dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
	436	return -EIO;
	437	}
	438
	439	if (!pdata) {
	440	dev_err(&client->dev, "no platform data?\n");
	441	return -EINVAL;
	442	}
	443
	444	if (!pdata->rows \|\| !pdata->cols \|\| !pdata->keymap) {
	445	dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
	446	return -EINVAL;
	447	}
	448
	449	if (pdata->keymapsize != ADP5588_KEYMAPSIZE) {
	450	dev_err(&client->dev, "invalid keymapsize\n");
	451	return -EINVAL;
	452	}
	453
69a4af60 XC	454	if (!pdata->gpimap && pdata->gpimapsize) {
	455	dev_err(&client->dev, "invalid gpimap from pdata\n");
	456	return -EINVAL;
	457	}
	458
	459	if (pdata->gpimapsize > ADP5588_GPIMAPSIZE_MAX) {
	460	dev_err(&client->dev, "invalid gpimapsize\n");
	461	return -EINVAL;
	462	}
	463
	464	for (i = 0; i < pdata->gpimapsize; i++) {
	465	unsigned short pin = pdata->gpimap[i].pin;
	466
	467	if (pin < GPI_PIN_BASE \|\| pin > GPI_PIN_END) {
	468	dev_err(&client->dev, "invalid gpi pin data\n");
	469	return -EINVAL;
	470	}
	471
	472	if (pin <= GPI_PIN_ROW_END) {
	473	if (pin - GPI_PIN_ROW_BASE + 1 <= pdata->rows) {
	474	dev_err(&client->dev, "invalid gpi row data\n");
	475	return -EINVAL;
	476	}
	477	} else {
	478	if (pin - GPI_PIN_COL_BASE + 1 <= pdata->cols) {
	479	dev_err(&client->dev, "invalid gpi col data\n");
	480	return -EINVAL;
	481	}
	482	}
	483	}
	484
88751dd6 MH	485	if (!client->irq) {
	486	dev_err(&client->dev, "no IRQ?\n");
	487	return -EINVAL;
	488	}
	489
	490	kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
	491	input = input_allocate_device();
	492	if (!kpad \|\| !input) {
	493	error = -ENOMEM;
	494	goto err_free_mem;
	495	}
	496
	497	kpad->client = client;
	498	kpad->input = input;
	499	INIT_DELAYED_WORK(&kpad->work, adp5588_work);
	500
	501	ret = adp5588_read(client, DEV_ID);
	502	if (ret < 0) {
	503	error = ret;
	504	goto err_free_mem;
	505	}
	506
	507	revid = (u8) ret & ADP5588_DEVICE_ID_MASK;
	508	if (WA_DELAYED_READOUT_REVID(revid))
	509	kpad->delay = msecs_to_jiffies(30);
	510
	511	input->name = client->name;
	512	input->phys = "adp5588-keys/input0";
	513	input->dev.parent = &client->dev;
	514
	515	input_set_drvdata(input, kpad);
	516
	517	input->id.bustype = BUS_I2C;
	518	input->id.vendor = 0x0001;
	519	input->id.product = 0x0001;
	520	input->id.version = revid;
	521
	522	input->keycodesize = sizeof(kpad->keycode[0]);
	523	input->keycodemax = pdata->keymapsize;
	524	input->keycode = kpad->keycode;
	525
	526	memcpy(kpad->keycode, pdata->keymap,
	527	pdata->keymapsize * input->keycodesize);
	528
69a4af60 XC	529	kpad->gpimap = pdata->gpimap;
	530	kpad->gpimapsize = pdata->gpimapsize;
	531
88751dd6 MH	532	/* setup input device */
	533	__set_bit(EV_KEY, input->evbit);
	534
	535	if (pdata->repeat)
	536	__set_bit(EV_REP, input->evbit);
	537
	538	for (i = 0; i < input->keycodemax; i++)
	539	__set_bit(kpad->keycode[i] & KEY_MAX, input->keybit);
	540	__clear_bit(KEY_RESERVED, input->keybit);
	541
69a4af60 XC	542	if (kpad->gpimapsize)
	543	__set_bit(EV_SW, input->evbit);
	544	for (i = 0; i < kpad->gpimapsize; i++)
	545	__set_bit(kpad->gpimap[i].sw_evt, input->swbit);
	546
88751dd6 MH	547	error = input_register_device(input);
	548	if (error) {
	549	dev_err(&client->dev, "unable to register input device\n");
	550	goto err_free_mem;
	551	}
	552
	553	error = request_irq(client->irq, adp5588_irq,
	554	IRQF_TRIGGER_FALLING \| IRQF_DISABLED,
	555	client->dev.driver->name, kpad);
	556	if (error) {
	557	dev_err(&client->dev, "irq %d busy?\n", client->irq);
	558	goto err_unreg_dev;
	559	}
	560
	561	error = adp5588_setup(client);
	562	if (error)
	563	goto err_free_irq;
	564
69a4af60 XC	565	if (kpad->gpimapsize)
	566	adp5588_report_switch_state(kpad);
	567
0d87c722	568	error = adp5588_gpio_add(kpad);
ba9f507a XC	569	if (error)
	570	goto err_free_irq;
	571
88751dd6 MH	572	device_init_wakeup(&client->dev, 1);
	573	i2c_set_clientdata(client, kpad);
	574
	575	dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
	576	return 0;
	577
	578	err_free_irq:
	579	free_irq(client->irq, kpad);
	580	err_unreg_dev:
	581	input_unregister_device(input);
	582	input = NULL;
	583	err_free_mem:
	584	input_free_device(input);
	585	kfree(kpad);
	586
	587	return error;
	588	}
	589
	590	static int __devexit adp5588_remove(struct i2c_client *client)
	591	{
	592	struct adp5588_kpad *kpad = i2c_get_clientdata(client);
	593
	594	adp5588_write(client, CFG, 0);
	595	free_irq(client->irq, kpad);
	596	cancel_delayed_work_sync(&kpad->work);
	597	input_unregister_device(kpad->input);
0d87c722	598	adp5588_gpio_remove(kpad);
88751dd6 MH	599	kfree(kpad);
	600
	601	return 0;
	602	}
	603
	604	#ifdef CONFIG_PM
	605	static int adp5588_suspend(struct device *dev)
	606	{
	607	struct adp5588_kpad *kpad = dev_get_drvdata(dev);
	608	struct i2c_client *client = kpad->client;
	609
	610	disable_irq(client->irq);
	611	cancel_delayed_work_sync(&kpad->work);
	612
	613	if (device_may_wakeup(&client->dev))
	614	enable_irq_wake(client->irq);
	615
	616	return 0;
	617	}
	618
	619	static int adp5588_resume(struct device *dev)
	620	{
	621	struct adp5588_kpad *kpad = dev_get_drvdata(dev);
	622	struct i2c_client *client = kpad->client;
	623
	624	if (device_may_wakeup(&client->dev))
	625	disable_irq_wake(client->irq);
	626
	627	enable_irq(client->irq);
	628
	629	return 0;
	630	}
	631
47145210	632	static const struct dev_pm_ops adp5588_dev_pm_ops = {
88751dd6 MH	633	.suspend = adp5588_suspend,
	634	.resume = adp5588_resume,
	635	};
	636	#endif
	637
	638	static const struct i2c_device_id adp5588_id[] = {
d537155a	639	{ "adp5588-keys", 0 },
5a9003db	640	{ "adp5587-keys", 0 },
88751dd6 MH	641	{ }
	642	};
	643	MODULE_DEVICE_TABLE(i2c, adp5588_id);
	644
	645	static struct i2c_driver adp5588_driver = {
	646	.driver = {
	647	.name = KBUILD_MODNAME,
	648	#ifdef CONFIG_PM
	649	.pm = &adp5588_dev_pm_ops,
	650	#endif
	651	},
	652	.probe = adp5588_probe,
	653	.remove = __devexit_p(adp5588_remove),
	654	.id_table = adp5588_id,
	655	};
	656
	657	static int __init adp5588_init(void)
	658	{
	659	return i2c_add_driver(&adp5588_driver);
	660	}
	661	module_init(adp5588_init);
	662
	663	static void __exit adp5588_exit(void)
	664	{
	665	i2c_del_driver(&adp5588_driver);
	666	}
	667	module_exit(adp5588_exit);
	668
	669	MODULE_LICENSE("GPL");
	670	MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
5a9003db	671	MODULE_DESCRIPTION("ADP5588/87 Keypad driver");
88751dd6	672	MODULE_ALIAS("platform:adp5588-keys");