[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) 2008-2009 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>

 /* Configuration Register1 */
#define AUTO_INC	(1 << 7)
#define GPIEM_CFG	(1 << 6)
#define OVR_FLOW_M	(1 << 5)
#define INT_CFG		(1 << 4)
#define OVR_FLOW_IEN	(1 << 3)
#define K_LCK_IM	(1 << 2)
#define GPI_IEN		(1 << 1)
#define KE_IEN		(1 << 0)

/* Interrupt Status Register */
#define CMP2_INT	(1 << 5)
#define CMP1_INT	(1 << 4)
#define OVR_FLOW_INT	(1 << 3)
#define K_LCK_INT	(1 << 2)
#define GPI_INT		(1 << 1)
#define KE_INT		(1 << 0)

/* Key Lock and Event Counter Register */
#define K_LCK_EN	(1 << 6)
#define LCK21		0x30
#define KEC		0xF

/* 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

#define MAXGPIO			18
#define ADP_BANK(offs)		((offs) >> 3)
#define ADP_BIT(offs)		(1u << ((offs) & 0x7))

/*
 * 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[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 = ADP_BANK(kpad->gpiomap[off]);
	unsigned int bit = ADP_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 = 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;

	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 = 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 = 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 = 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 = 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[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 < 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 <= ADP_BANK(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 & OVR_FLOW_INT)	/* Unlikely and should never happen */
		dev_err(&client->dev, "Event Overflow Error\n");

	if (status & KE_INT) {
		ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & 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, 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 <= ADP_BANK(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, CMP2_INT | CMP1_INT |
					OVR_FLOW_INT | K_LCK_INT |
					GPI_INT | KE_INT); /* Status is W1C */

	ret |= adp5588_write(client, CFG, INT_CFG | OVR_FLOW_IEN | 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/
	6	*
	7	* Copyright (C) 2008-2009 Analog Devices Inc.
	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
	27	/* Configuration Register1 */
	28	#define AUTO_INC (1 << 7)
	29	#define GPIEM_CFG (1 << 6)
	30	#define OVR_FLOW_M (1 << 5)
	31	#define INT_CFG (1 << 4)
	32	#define OVR_FLOW_IEN (1 << 3)
	33	#define K_LCK_IM (1 << 2)
	34	#define GPI_IEN (1 << 1)
	35	#define KE_IEN (1 << 0)
	36
	37	/* Interrupt Status Register */
	38	#define CMP2_INT (1 << 5)
	39	#define CMP1_INT (1 << 4)
	40	#define OVR_FLOW_INT (1 << 3)
	41	#define K_LCK_INT (1 << 2)
	42	#define GPI_INT (1 << 1)
	43	#define KE_INT (1 << 0)
	44
	45	/* Key Lock and Event Counter Register */
	46	#define K_LCK_EN (1 << 6)
	47	#define LCK21 0x30
	48	#define KEC 0xF
	49
	50	/* Key Event Register xy */
	51	#define KEY_EV_PRESSED (1 << 7)
	52	#define KEY_EV_MASK (0x7F)
	53
	54	#define KP_SEL(x) (0xFFFF >> (16 - x)) /* 2^x-1 */
	55
	56	#define KEYP_MAX_EVENT 10
	57
ba9f507a XC	58	#define MAXGPIO 18
	59	#define ADP_BANK(offs) ((offs) >> 3)
	60	#define ADP_BIT(offs) (1u << ((offs) & 0x7))
	61
88751dd6 MH	62	/*
	63	* Early pre 4.0 Silicon required to delay readout by at least 25ms,
	64	* since the Event Counter Register updated 25ms after the interrupt
	65	* asserted.
	66	*/
	67	#define WA_DELAYED_READOUT_REVID(rev) ((rev) < 4)
	68
	69	struct adp5588_kpad {
	70	struct i2c_client *client;
	71	struct input_dev *input;
	72	struct delayed_work work;
	73	unsigned long delay;
	74	unsigned short keycode[ADP5588_KEYMAPSIZE];
69a4af60 XC	75	const struct adp5588_gpi_map *gpimap;
69a4af60 XC	76	unsigned short gpimapsize;
ba9f507a XC	77	#ifdef CONFIG_GPIOLIB
	78	unsigned char gpiomap[MAXGPIO];
	79	bool export_gpio;
	80	struct gpio_chip gc;
	81	struct mutex gpio_lock; /* Protect cached dir, dat_out */
	82	u8 dat_out[3];
	83	u8 dir[3];
	84	#endif
88751dd6 MH	85	};
	86
	87	static int adp5588_read(struct i2c_client *client, u8 reg)
	88	{
	89	int ret = i2c_smbus_read_byte_data(client, reg);
	90
	91	if (ret < 0)
	92	dev_err(&client->dev, "Read Error\n");
	93
	94	return ret;
	95	}
	96
	97	static int adp5588_write(struct i2c_client *client, u8 reg, u8 val)
	98	{
	99	return i2c_smbus_write_byte_data(client, reg, val);
	100	}
	101
ba9f507a XC	102	#ifdef CONFIG_GPIOLIB
	103	static int adp5588_gpio_get_value(struct gpio_chip *chip, unsigned off)
	104	{
	105	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	106	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);
	107	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);
	108
	109	return !!(adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank) & bit);
	110	}
	111
	112	static void adp5588_gpio_set_value(struct gpio_chip *chip,
	113	unsigned off, int val)
	114	{
	115	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	116	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);
	117	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);
	118
	119	mutex_lock(&kpad->gpio_lock);
	120
	121	if (val)
	122	kpad->dat_out[bank] \|= bit;
	123	else
	124	kpad->dat_out[bank] &= ~bit;
	125
	126	adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
	127	kpad->dat_out[bank]);
	128
	129	mutex_unlock(&kpad->gpio_lock);
	130	}
	131
	132	static int adp5588_gpio_direction_input(struct gpio_chip *chip, unsigned off)
	133	{
	134	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	135	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);
	136	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);
	137	int ret;
	138
	139	mutex_lock(&kpad->gpio_lock);
	140
	141	kpad->dir[bank] &= ~bit;
	142	ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);
	143
	144	mutex_unlock(&kpad->gpio_lock);
	145
	146	return ret;
	147	}
	148
	149	static int adp5588_gpio_direction_output(struct gpio_chip *chip,
	150	unsigned off, int val)
	151	{
	152	struct adp5588_kpad *kpad = container_of(chip, struct adp5588_kpad, gc);
	153	unsigned int bank = ADP_BANK(kpad->gpiomap[off]);
	154	unsigned int bit = ADP_BIT(kpad->gpiomap[off]);
	155	int ret;
	156
	157	mutex_lock(&kpad->gpio_lock);
	158
	159	kpad->dir[bank] \|= bit;
	160
	161	if (val)
	162	kpad->dat_out[bank] \|= bit;
	163	else
	164	kpad->dat_out[bank] &= ~bit;
	165
166	ret = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
167	kpad->dat_out[bank]);
168	ret \|= adp5588_write(kpad->client, GPIO_DIR1 + bank,
169	kpad->dir[bank]);
170
171	mutex_unlock(&kpad->gpio_lock);
172
173	return ret;
174	}
175
0d87c722 DT	176	static int __devinit adp5588_build_gpiomap(struct adp5588_kpad *kpad,
0d87c722 DT	177	const struct adp5588_kpad_platform_data *pdata)
ba9f507a	178	{
0d87c722 DT	179	bool pin_used[MAXGPIO];
	180	int n_unused = 0;
	181	int i;
ba9f507a	182
0d87c722	183	memset(pin_used, 0, sizeof(pin_used));
ba9f507a	184
0d87c722 DT	185	for (i = 0; i < pdata->rows; i++)
0d87c722 DT	186	pin_used[i] = true;
ba9f507a	187
0d87c722 DT	188	for (i = 0; i < pdata->cols; i++)
0d87c722 DT	189	pin_used[i + GPI_PIN_COL_BASE - GPI_PIN_BASE] = true;
ba9f507a	190
0d87c722 DT	191	for (i = 0; i < kpad->gpimapsize; i++)
0d87c722 DT	192	pin_used[kpad->gpimap[i].pin - GPI_PIN_BASE] = true;
ba9f507a	193
0d87c722 DT	194	for (i = 0; i < MAXGPIO; i++)
	195	if (!pin_used[i])
	196	kpad->gpiomap[n_unused++] = i;
ba9f507a	197
0d87c722 DT	198	return n_unused;
0d87c722 DT	199	}
ba9f507a	200
0d87c722 DT	201	static int __devinit adp5588_gpio_add(struct adp5588_kpad *kpad)
	202	{
	203	struct device *dev = &kpad->client->dev;
	204	const struct adp5588_kpad_platform_data *pdata = dev->platform_data;
	205	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
	206	int i, error;
	207
	208	if (!gpio_data)
	209	return 0;
	210
	211	kpad->gc.ngpio = adp5588_build_gpiomap(kpad, pdata);
	212	if (kpad->gc.ngpio == 0) {
ba9f507a XC	213	dev_info(dev, "No unused gpios left to export\n");
	214	return 0;
	215	}
	216
0d87c722 DT	217	kpad->export_gpio = true;
0d87c722 DT	218
ba9f507a XC	219	kpad->gc.direction_input = adp5588_gpio_direction_input;
	220	kpad->gc.direction_output = adp5588_gpio_direction_output;
	221	kpad->gc.get = adp5588_gpio_get_value;
	222	kpad->gc.set = adp5588_gpio_set_value;
	223	kpad->gc.can_sleep = 1;
	224
	225	kpad->gc.base = gpio_data->gpio_start;
	226	kpad->gc.label = kpad->client->name;
	227	kpad->gc.owner = THIS_MODULE;
	228
	229	mutex_init(&kpad->gpio_lock);
	230
	231	error = gpiochip_add(&kpad->gc);
	232	if (error) {
	233	dev_err(dev, "gpiochip_add failed, err: %d\n", error);
	234	return error;
	235	}
	236
	237	for (i = 0; i <= ADP_BANK(MAXGPIO); i++) {
	238	kpad->dat_out[i] = adp5588_read(kpad->client,
	239	GPIO_DAT_OUT1 + i);
	240	kpad->dir[i] = adp5588_read(kpad->client, GPIO_DIR1 + i);
	241	}
	242
	243	if (gpio_data->setup) {
	244	error = gpio_data->setup(kpad->client,
	245	kpad->gc.base, kpad->gc.ngpio,
	246	gpio_data->context);
	247	if (error)
	248	dev_warn(dev, "setup failed, %d\n", error);
	249	}
	250
	251	return 0;
	252	}
	253
0d87c722	254	static void __devexit adp5588_gpio_remove(struct adp5588_kpad *kpad)
ba9f507a	255	{
0d87c722	256	struct device *dev = &kpad->client->dev;
ba9f507a XC	257	const struct adp5588_kpad_platform_data *pdata = dev->platform_data;
	258	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
	259	int error;
	260
	261	if (!kpad->export_gpio)
	262	return;
	263
	264	if (gpio_data->teardown) {
	265	error = gpio_data->teardown(kpad->client,
	266	kpad->gc.base, kpad->gc.ngpio,
	267	gpio_data->context);
	268	if (error)
	269	dev_warn(dev, "teardown failed %d\n", error);
	270	}
	271
	272	error = gpiochip_remove(&kpad->gc);
	273	if (error)
	274	dev_warn(dev, "gpiochip_remove failed %d\n", error);
	275	}
	276	#else
0d87c722	277	static inline int adp5588_gpio_add(struct adp5588_kpad *kpad)
ba9f507a XC	278	{
	279	return 0;
	280	}
	281
0d87c722	282	static inline void adp5588_gpio_remove(struct adp5588_kpad *kpad)
ba9f507a XC	283	{
	284	}
	285	#endif
	286
69a4af60 XC	287	static void adp5588_report_events(struct adp5588_kpad *kpad, int ev_cnt)
	288	{
	289	int i, j;
	290
	291	for (i = 0; i < ev_cnt; i++) {
	292	int key = adp5588_read(kpad->client, Key_EVENTA + i);
	293	int key_val = key & KEY_EV_MASK;
	294
	295	if (key_val >= GPI_PIN_BASE && key_val <= GPI_PIN_END) {
	296	for (j = 0; j < kpad->gpimapsize; j++) {
	297	if (key_val == kpad->gpimap[j].pin) {
	298	input_report_switch(kpad->input,
	299	kpad->gpimap[j].sw_evt,
	300	key & KEY_EV_PRESSED);
	301	break;
	302	}
	303	}
	304	} else {
	305	input_report_key(kpad->input,
	306	kpad->keycode[key_val - 1],
	307	key & KEY_EV_PRESSED);
	308	}
	309	}
	310	}
	311
88751dd6 MH	312	static void adp5588_work(struct work_struct *work)
	313	{
	314	struct adp5588_kpad *kpad = container_of(work,
	315	struct adp5588_kpad, work.work);
	316	struct i2c_client *client = kpad->client;
69a4af60	317	int status, ev_cnt;
88751dd6 MH	318
	319	status = adp5588_read(client, INT_STAT);
	320
	321	if (status & OVR_FLOW_INT) /* Unlikely and should never happen */
	322	dev_err(&client->dev, "Event Overflow Error\n");
	323
	324	if (status & KE_INT) {
	325	ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & KEC;
	326	if (ev_cnt) {
69a4af60	327	adp5588_report_events(kpad, ev_cnt);
88751dd6 MH	328	input_sync(kpad->input);
	329	}
	330	}
	331	adp5588_write(client, INT_STAT, status); /* Status is W1C */
	332	}
	333
	334	static irqreturn_t adp5588_irq(int irq, void *handle)
	335	{
	336	struct adp5588_kpad *kpad = handle;
	337
	338	/*
	339	* use keventd context to read the event fifo registers
	340	* Schedule readout at least 25ms after notification for
	341	* REVID < 4
	342	*/
	343
	344	schedule_delayed_work(&kpad->work, kpad->delay);
	345
	346	return IRQ_HANDLED;
	347	}
	348
	349	static int __devinit adp5588_setup(struct i2c_client *client)
	350	{
ba9f507a XC	351	const struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
ba9f507a XC	352	const struct adp5588_gpio_platform_data *gpio_data = pdata->gpio_data;
88751dd6	353	int i, ret;
69a4af60	354	unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
88751dd6 MH	355
	356	ret = adp5588_write(client, KP_GPIO1, KP_SEL(pdata->rows));
	357	ret \|= adp5588_write(client, KP_GPIO2, KP_SEL(pdata->cols) & 0xFF);
	358	ret \|= adp5588_write(client, KP_GPIO3, KP_SEL(pdata->cols) >> 8);
	359
	360	if (pdata->en_keylock) {
	361	ret \|= adp5588_write(client, UNLOCK1, pdata->unlock_key1);
	362	ret \|= adp5588_write(client, UNLOCK2, pdata->unlock_key2);
	363	ret \|= adp5588_write(client, KEY_LCK_EC_STAT, K_LCK_EN);
	364	}
	365
	366	for (i = 0; i < KEYP_MAX_EVENT; i++)
	367	ret \|= adp5588_read(client, Key_EVENTA);
	368
69a4af60 XC	369	for (i = 0; i < pdata->gpimapsize; i++) {
	370	unsigned short pin = pdata->gpimap[i].pin;
	371
	372	if (pin <= GPI_PIN_ROW_END) {
	373	evt_mode1 \|= (1 << (pin - GPI_PIN_ROW_BASE));
	374	} else {
	375	evt_mode2 \|= ((1 << (pin - GPI_PIN_COL_BASE)) & 0xFF);
	376	evt_mode3 \|= ((1 << (pin - GPI_PIN_COL_BASE)) >> 8);
	377	}
	378	}
	379
	380	if (pdata->gpimapsize) {
	381	ret \|= adp5588_write(client, GPI_EM1, evt_mode1);
	382	ret \|= adp5588_write(client, GPI_EM2, evt_mode2);
	383	ret \|= adp5588_write(client, GPI_EM3, evt_mode3);
	384	}
	385
ba9f507a XC	386	if (gpio_data) {
	387	for (i = 0; i <= ADP_BANK(MAXGPIO); i++) {
	388	int pull_mask = gpio_data->pullup_dis_mask;
	389
	390	ret \|= adp5588_write(client, GPIO_PULL1 + i,
	391	(pull_mask >> (8 * i)) & 0xFF);
	392	}
	393	}
	394
88751dd6 MH	395	ret \|= adp5588_write(client, INT_STAT, CMP2_INT \| CMP1_INT \|
	396	OVR_FLOW_INT \| K_LCK_INT \|
	397	GPI_INT \| KE_INT); /* Status is W1C */
	398
	399	ret \|= adp5588_write(client, CFG, INT_CFG \| OVR_FLOW_IEN \| KE_IEN);
	400
	401	if (ret < 0) {
	402	dev_err(&client->dev, "Write Error\n");
	403	return ret;
	404	}
	405
	406	return 0;
	407	}
	408
69a4af60 XC	409	static void __devinit adp5588_report_switch_state(struct adp5588_kpad *kpad)
	410	{
	411	int gpi_stat1 = adp5588_read(kpad->client, GPIO_DAT_STAT1);
	412	int gpi_stat2 = adp5588_read(kpad->client, GPIO_DAT_STAT2);
	413	int gpi_stat3 = adp5588_read(kpad->client, GPIO_DAT_STAT3);
	414	int gpi_stat_tmp, pin_loc;
	415	int i;
	416
	417	for (i = 0; i < kpad->gpimapsize; i++) {
	418	unsigned short pin = kpad->gpimap[i].pin;
	419
	420	if (pin <= GPI_PIN_ROW_END) {
	421	gpi_stat_tmp = gpi_stat1;
	422	pin_loc = pin - GPI_PIN_ROW_BASE;
	423	} else if ((pin - GPI_PIN_COL_BASE) < 8) {
	424	gpi_stat_tmp = gpi_stat2;
	425	pin_loc = pin - GPI_PIN_COL_BASE;
	426	} else {
	427	gpi_stat_tmp = gpi_stat3;
	428	pin_loc = pin - GPI_PIN_COL_BASE - 8;
	429	}
	430
	431	if (gpi_stat_tmp < 0) {
	432	dev_err(&kpad->client->dev,
	433	"Can't read GPIO_DAT_STAT switch %d default to OFF\n",
	434	pin);
	435	gpi_stat_tmp = 0;
	436	}
	437
	438	input_report_switch(kpad->input,
	439	kpad->gpimap[i].sw_evt,
	440	!(gpi_stat_tmp & (1 << pin_loc)));
	441	}
	442
	443	input_sync(kpad->input);
	444	}
	445
	446
88751dd6 MH	447	static int __devinit adp5588_probe(struct i2c_client *client,
	448	const struct i2c_device_id *id)
	449	{
	450	struct adp5588_kpad *kpad;
ba9f507a	451	const struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
88751dd6 MH	452	struct input_dev *input;
	453	unsigned int revid;
	454	int ret, i;
	455	int error;
	456
	457	if (!i2c_check_functionality(client->adapter,
	458	I2C_FUNC_SMBUS_BYTE_DATA)) {
	459	dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
	460	return -EIO;
	461	}
	462
	463	if (!pdata) {
	464	dev_err(&client->dev, "no platform data?\n");
	465	return -EINVAL;
	466	}
	467
	468	if (!pdata->rows \|\| !pdata->cols \|\| !pdata->keymap) {
	469	dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
	470	return -EINVAL;
	471	}
	472
	473	if (pdata->keymapsize != ADP5588_KEYMAPSIZE) {
	474	dev_err(&client->dev, "invalid keymapsize\n");
	475	return -EINVAL;
	476	}
	477
69a4af60 XC	478	if (!pdata->gpimap && pdata->gpimapsize) {
	479	dev_err(&client->dev, "invalid gpimap from pdata\n");
	480	return -EINVAL;
	481	}
	482
	483	if (pdata->gpimapsize > ADP5588_GPIMAPSIZE_MAX) {
	484	dev_err(&client->dev, "invalid gpimapsize\n");
	485	return -EINVAL;
	486	}
	487
	488	for (i = 0; i < pdata->gpimapsize; i++) {
	489	unsigned short pin = pdata->gpimap[i].pin;
	490
	491	if (pin < GPI_PIN_BASE \|\| pin > GPI_PIN_END) {
	492	dev_err(&client->dev, "invalid gpi pin data\n");
	493	return -EINVAL;
	494	}
	495
	496	if (pin <= GPI_PIN_ROW_END) {
	497	if (pin - GPI_PIN_ROW_BASE + 1 <= pdata->rows) {
	498	dev_err(&client->dev, "invalid gpi row data\n");
	499	return -EINVAL;
	500	}
	501	} else {
	502	if (pin - GPI_PIN_COL_BASE + 1 <= pdata->cols) {
	503	dev_err(&client->dev, "invalid gpi col data\n");
	504	return -EINVAL;
	505	}
	506	}
	507	}
	508
88751dd6 MH	509	if (!client->irq) {
	510	dev_err(&client->dev, "no IRQ?\n");
	511	return -EINVAL;
	512	}
	513
	514	kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
	515	input = input_allocate_device();
	516	if (!kpad \|\| !input) {
	517	error = -ENOMEM;
	518	goto err_free_mem;
	519	}
	520
	521	kpad->client = client;
	522	kpad->input = input;
	523	INIT_DELAYED_WORK(&kpad->work, adp5588_work);
	524
	525	ret = adp5588_read(client, DEV_ID);
	526	if (ret < 0) {
	527	error = ret;
	528	goto err_free_mem;
	529	}
	530
	531	revid = (u8) ret & ADP5588_DEVICE_ID_MASK;
	532	if (WA_DELAYED_READOUT_REVID(revid))
	533	kpad->delay = msecs_to_jiffies(30);
	534
	535	input->name = client->name;
	536	input->phys = "adp5588-keys/input0";
	537	input->dev.parent = &client->dev;
	538
	539	input_set_drvdata(input, kpad);
	540
	541	input->id.bustype = BUS_I2C;
	542	input->id.vendor = 0x0001;
	543	input->id.product = 0x0001;
	544	input->id.version = revid;
	545
	546	input->keycodesize = sizeof(kpad->keycode[0]);
	547	input->keycodemax = pdata->keymapsize;
	548	input->keycode = kpad->keycode;
	549
	550	memcpy(kpad->keycode, pdata->keymap,
	551	pdata->keymapsize * input->keycodesize);
	552
69a4af60 XC	553	kpad->gpimap = pdata->gpimap;
	554	kpad->gpimapsize = pdata->gpimapsize;
	555
88751dd6 MH	556	/* setup input device */
	557	__set_bit(EV_KEY, input->evbit);
	558
	559	if (pdata->repeat)
	560	__set_bit(EV_REP, input->evbit);
	561
	562	for (i = 0; i < input->keycodemax; i++)
	563	__set_bit(kpad->keycode[i] & KEY_MAX, input->keybit);
	564	__clear_bit(KEY_RESERVED, input->keybit);
	565
69a4af60 XC	566	if (kpad->gpimapsize)
	567	__set_bit(EV_SW, input->evbit);
	568	for (i = 0; i < kpad->gpimapsize; i++)
	569	__set_bit(kpad->gpimap[i].sw_evt, input->swbit);
	570
88751dd6 MH	571	error = input_register_device(input);
	572	if (error) {
	573	dev_err(&client->dev, "unable to register input device\n");
	574	goto err_free_mem;
	575	}
	576
	577	error = request_irq(client->irq, adp5588_irq,
	578	IRQF_TRIGGER_FALLING \| IRQF_DISABLED,
	579	client->dev.driver->name, kpad);
	580	if (error) {
	581	dev_err(&client->dev, "irq %d busy?\n", client->irq);
	582	goto err_unreg_dev;
	583	}
	584
	585	error = adp5588_setup(client);
	586	if (error)
	587	goto err_free_irq;
	588
69a4af60 XC	589	if (kpad->gpimapsize)
	590	adp5588_report_switch_state(kpad);
	591
0d87c722	592	error = adp5588_gpio_add(kpad);
ba9f507a XC	593	if (error)
	594	goto err_free_irq;
	595
88751dd6 MH	596	device_init_wakeup(&client->dev, 1);
	597	i2c_set_clientdata(client, kpad);
	598
	599	dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
	600	return 0;
	601
	602	err_free_irq:
	603	free_irq(client->irq, kpad);
	604	err_unreg_dev:
	605	input_unregister_device(input);
	606	input = NULL;
	607	err_free_mem:
	608	input_free_device(input);
	609	kfree(kpad);
	610
	611	return error;
	612	}
	613
	614	static int __devexit adp5588_remove(struct i2c_client *client)
	615	{
	616	struct adp5588_kpad *kpad = i2c_get_clientdata(client);
	617
	618	adp5588_write(client, CFG, 0);
	619	free_irq(client->irq, kpad);
	620	cancel_delayed_work_sync(&kpad->work);
	621	input_unregister_device(kpad->input);
0d87c722	622	adp5588_gpio_remove(kpad);
88751dd6 MH	623	kfree(kpad);
	624
	625	return 0;
	626	}
	627
	628	#ifdef CONFIG_PM
	629	static int adp5588_suspend(struct device *dev)
	630	{
	631	struct adp5588_kpad *kpad = dev_get_drvdata(dev);
	632	struct i2c_client *client = kpad->client;
	633
	634	disable_irq(client->irq);
	635	cancel_delayed_work_sync(&kpad->work);
	636
	637	if (device_may_wakeup(&client->dev))
	638	enable_irq_wake(client->irq);
	639
	640	return 0;
	641	}
	642
	643	static int adp5588_resume(struct device *dev)
	644	{
	645	struct adp5588_kpad *kpad = dev_get_drvdata(dev);
	646	struct i2c_client *client = kpad->client;
	647
	648	if (device_may_wakeup(&client->dev))
	649	disable_irq_wake(client->irq);
	650
	651	enable_irq(client->irq);
	652
	653	return 0;
	654	}
	655
47145210	656	static const struct dev_pm_ops adp5588_dev_pm_ops = {
88751dd6 MH	657	.suspend = adp5588_suspend,
	658	.resume = adp5588_resume,
	659	};
	660	#endif
	661
	662	static const struct i2c_device_id adp5588_id[] = {
d537155a	663	{ "adp5588-keys", 0 },
5a9003db	664	{ "adp5587-keys", 0 },
88751dd6 MH	665	{ }
	666	};
	667	MODULE_DEVICE_TABLE(i2c, adp5588_id);
	668
	669	static struct i2c_driver adp5588_driver = {
	670	.driver = {
	671	.name = KBUILD_MODNAME,
	672	#ifdef CONFIG_PM
	673	.pm = &adp5588_dev_pm_ops,
	674	#endif
	675	},
	676	.probe = adp5588_probe,
	677	.remove = __devexit_p(adp5588_remove),
	678	.id_table = adp5588_id,
	679	};
	680
	681	static int __init adp5588_init(void)
	682	{
	683	return i2c_add_driver(&adp5588_driver);
	684	}
	685	module_init(adp5588_init);
	686
	687	static void __exit adp5588_exit(void)
	688	{
	689	i2c_del_driver(&adp5588_driver);
	690	}
	691	module_exit(adp5588_exit);
	692
	693	MODULE_LICENSE("GPL");
	694	MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
5a9003db	695	MODULE_DESCRIPTION("ADP5588/87 Keypad driver");
88751dd6	696	MODULE_ALIAS("platform:adp5588-keys");