[linux-2.6-block.git] / drivers / leds / leds-pca9532.c

/*
 * pca9532.c - 16-bit Led dimmer
 *
 * Copyright (C) 2008 Riku Voipio
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * Datasheet: http://www.nxp.com/acrobat/datasheets/PCA9532_3.pdf
 *
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/input.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <linux/leds-pca9532.h>

static const unsigned short normal_i2c[] = { /*0x60,*/ I2C_CLIENT_END};
I2C_CLIENT_INSMOD_1(pca9532);

#define PCA9532_REG_PSC(i) (0x2+(i)*2)
#define PCA9532_REG_PWM(i) (0x3+(i)*2)
#define PCA9532_REG_LS0  0x6
#define LED_REG(led) ((led>>2)+PCA9532_REG_LS0)
#define LED_NUM(led) (led & 0x3)

#define ldev_to_led(c)       container_of(c, struct pca9532_led, ldev)

struct pca9532_data {
	struct i2c_client *client;
	struct pca9532_led leds[16];
	struct mutex update_lock;
	struct input_dev    *idev;
	struct work_struct work;
	u8 pwm[2];
	u8 psc[2];
};

static int pca9532_probe(struct i2c_client *client,
	const struct i2c_device_id *id);
static int pca9532_remove(struct i2c_client *client);

static const struct i2c_device_id pca9532_id[] = {
	{ "pca9532", 0 },
	{ }
};

MODULE_DEVICE_TABLE(i2c, pca9532_id);

static struct i2c_driver pca9532_driver = {
	.driver = {
		.name   = "pca9532",
	},
	.probe  = pca9532_probe,
	.remove = pca9532_remove,
	.id_table = pca9532_id,
};

/* We have two pwm/blinkers, but 16 possible leds to drive. Additionaly,
 * the clever Thecus people are using one pwm to drive the beeper. So,
 * as a compromise we average one pwm to the values requested by all
 * leds that are not ON/OFF.
 * */
static int pca9532_calcpwm(struct i2c_client *client, int pwm, int blink,
	enum led_brightness value)
{
	int a = 0, b = 0, i = 0;
	struct pca9532_data *data = i2c_get_clientdata(client);
	for (i = 0; i < 16; i++) {
		if (data->leds[i].type == PCA9532_TYPE_LED &&
			data->leds[i].state == PCA9532_PWM0+pwm) {
				a++;
				b += data->leds[i].ldev.brightness;
		}
	}
	if (a == 0) {
		dev_err(&client->dev,
		"fear of division by zero %d/%d, wanted %d\n",
			b, a, value);
		return -EINVAL;
	}
	b = b/a;
	if (b > 0xFF)
		return -EINVAL;
	data->pwm[pwm] = b;
	data->psc[pwm] = blink;
	return 0;
}

static int pca9532_setpwm(struct i2c_client *client, int pwm)
{
	struct pca9532_data *data = i2c_get_clientdata(client);
	mutex_lock(&data->update_lock);
	i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(pwm),
		data->pwm[pwm]);
	i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(pwm),
		data->psc[pwm]);
	mutex_unlock(&data->update_lock);
	return 0;
}

/* Set LED routing */
static void pca9532_setled(struct pca9532_led *led)
{
	struct i2c_client *client = led->client;
	struct pca9532_data *data = i2c_get_clientdata(client);
	char reg;

	mutex_lock(&data->update_lock);
	reg = i2c_smbus_read_byte_data(client, LED_REG(led->id));
	/* zero led bits */
	reg = reg & ~(0x3<<LED_NUM(led->id)*2);
	/* set the new value */
	reg = reg | (led->state << LED_NUM(led->id)*2);
	i2c_smbus_write_byte_data(client, LED_REG(led->id), reg);
	mutex_unlock(&data->update_lock);
}

static void pca9532_set_brightness(struct led_classdev *led_cdev,
	enum led_brightness value)
{
	int err = 0;
	struct pca9532_led *led = ldev_to_led(led_cdev);

	if (value == LED_OFF)
		led->state = PCA9532_OFF;
	else if (value == LED_FULL)
		led->state = PCA9532_ON;
	else {
		led->state = PCA9532_PWM0; /* Thecus: hardcode one pwm */
		err = pca9532_calcpwm(led->client, 0, 0, value);
		if (err)
			return; /* XXX: led api doesn't allow error code? */
	}
	schedule_work(&led->work);
}

static int pca9532_set_blink(struct led_classdev *led_cdev,
	unsigned long *delay_on, unsigned long *delay_off)
{
	struct pca9532_led *led = ldev_to_led(led_cdev);
	struct i2c_client *client = led->client;
	int psc;
	int err = 0;

	if (*delay_on == 0 && *delay_off == 0) {
	/* led subsystem ask us for a blink rate */
		*delay_on  = 1000;
		*delay_off = 1000;
	}
	if (*delay_on != *delay_off || *delay_on > 1690 || *delay_on < 6)
		return -EINVAL;

	/* Thecus specific: only use PSC/PWM 0 */
	psc = (*delay_on * 152-1)/1000;
	err = pca9532_calcpwm(client, 0, psc, led_cdev->brightness);
	if (err)
		return err;
	schedule_work(&led->work);
	return 0;
}

static int pca9532_event(struct input_dev *dev, unsigned int type,
	unsigned int code, int value)
{
	struct pca9532_data *data = input_get_drvdata(dev);

	if (!(type == EV_SND && (code == SND_BELL || code == SND_TONE)))
		return -1;

	/* XXX: allow different kind of beeps with psc/pwm modifications */
	if (value > 1 && value < 32767)
		data->pwm[1] = 127;
	else
		data->pwm[1] = 0;

	schedule_work(&data->work);

	return 0;
}

static void pca9532_input_work(struct work_struct *work)
{
	struct pca9532_data *data;
	data = container_of(work, struct pca9532_data, work);
	mutex_lock(&data->update_lock);
	i2c_smbus_write_byte_data(data->client, PCA9532_REG_PWM(1),
		data->pwm[1]);
	mutex_unlock(&data->update_lock);
}

static void pca9532_led_work(struct work_struct *work)
{
	struct pca9532_led *led;
	led = container_of(work, struct pca9532_led, work);
	if (led->state == PCA9532_PWM0)
		pca9532_setpwm(led->client, 0);
	pca9532_setled(led);
}

static int pca9532_configure(struct i2c_client *client,
	struct pca9532_data *data, struct pca9532_platform_data *pdata)
{
	int i, err = 0;

	for (i = 0; i < 2; i++)	{
		data->pwm[i] = pdata->pwm[i];
		data->psc[i] = pdata->psc[i];
		i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(i),
			data->pwm[i]);
		i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(i),
			data->psc[i]);
	}

	for (i = 0; i < 16; i++) {
		struct pca9532_led *led = &data->leds[i];
		struct pca9532_led *pled = &pdata->leds[i];
		led->client = client;
		led->id = i;
		led->type = pled->type;
		switch (led->type) {
		case PCA9532_TYPE_NONE:
			break;
		case PCA9532_TYPE_LED:
			led->state = pled->state;
			led->name =  pled->name;
			led->ldev.name = led->name;
			led->ldev.brightness = LED_OFF;
			led->ldev.brightness_set = pca9532_set_brightness;
			led->ldev.blink_set = pca9532_set_blink;
			INIT_WORK(&led->work, pca9532_led_work);
			err = led_classdev_register(&client->dev, &led->ldev);
			if (err < 0) {
				dev_err(&client->dev,
					"couldn't register LED %s\n",
					led->name);
				goto exit;
			}
			pca9532_setled(led);
			break;
		case PCA9532_TYPE_N2100_BEEP:
			BUG_ON(data->idev);
			led->state = PCA9532_PWM1;
			pca9532_setled(led);
			data->idev = input_allocate_device();
			if (data->idev == NULL) {
				err = -ENOMEM;
				goto exit;
			}
			data->idev->name = pled->name;
			data->idev->phys = "i2c/pca9532";
			data->idev->id.bustype = BUS_HOST;
			data->idev->id.vendor  = 0x001f;
			data->idev->id.product = 0x0001;
			data->idev->id.version = 0x0100;
			data->idev->evbit[0] = BIT_MASK(EV_SND);
			data->idev->sndbit[0] = BIT_MASK(SND_BELL) |
						BIT_MASK(SND_TONE);
			data->idev->event = pca9532_event;
			input_set_drvdata(data->idev, data);
			INIT_WORK(&data->work, pca9532_input_work);
			err = input_register_device(data->idev);
			if (err) {
				input_free_device(data->idev);
				cancel_work_sync(&data->work);
				data->idev = NULL;
				goto exit;
			}
			break;
		}
	}
	return 0;

exit:
	if (i > 0)
		for (i = i - 1; i >= 0; i--)
			switch (data->leds[i].type) {
			case PCA9532_TYPE_NONE:
				break;
			case PCA9532_TYPE_LED:
				led_classdev_unregister(&data->leds[i].ldev);
				cancel_work_sync(&data->leds[i].work);
				break;
			case PCA9532_TYPE_N2100_BEEP:
				if (data->idev != NULL) {
					input_unregister_device(data->idev);
					input_free_device(data->idev);
					cancel_work_sync(&data->work);
					data->idev = NULL;
				}
				break;
			}

	return err;
}

static int pca9532_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
{
	struct pca9532_data *data = i2c_get_clientdata(client);
	struct pca9532_platform_data *pca9532_pdata = client->dev.platform_data;
	int err;

	if (!pca9532_pdata)
		return -EIO;

	if (!i2c_check_functionality(client->adapter,
		I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	dev_info(&client->dev, "setting platform data\n");
	i2c_set_clientdata(client, data);
	data->client = client;
	mutex_init(&data->update_lock);

	err = pca9532_configure(client, data, pca9532_pdata);
	if (err) {
		kfree(data);
		i2c_set_clientdata(client, NULL);
	}

	return err;
}

static int pca9532_remove(struct i2c_client *client)
{
	struct pca9532_data *data = i2c_get_clientdata(client);
	int i;
	for (i = 0; i < 16; i++)
		switch (data->leds[i].type) {
		case PCA9532_TYPE_NONE:
			break;
		case PCA9532_TYPE_LED:
			led_classdev_unregister(&data->leds[i].ldev);
			cancel_work_sync(&data->leds[i].work);
			break;
		case PCA9532_TYPE_N2100_BEEP:
			if (data->idev != NULL) {
				input_unregister_device(data->idev);
				input_free_device(data->idev);
				cancel_work_sync(&data->work);
				data->idev = NULL;
			}
			break;
		}

	kfree(data);
	i2c_set_clientdata(client, NULL);
	return 0;
}

static int __init pca9532_init(void)
{
	return i2c_add_driver(&pca9532_driver);
}

static void __exit pca9532_exit(void)
{
	i2c_del_driver(&pca9532_driver);
}

MODULE_AUTHOR("Riku Voipio");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("PCA 9532 LED dimmer");

module_init(pca9532_init);
module_exit(pca9532_exit);
Commit	Line	Data
e14fa824 RV	1	/*
	2	* pca9532.c - 16-bit Led dimmer
	3	*
b26e0ed4	4	* Copyright (C) 2008 Riku Voipio
e14fa824 RV	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; version 2 of the License.
	9	*
	10	* Datasheet: http://www.nxp.com/acrobat/datasheets/PCA9532_3.pdf
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/i2c.h>
	16	#include <linux/leds.h>
	17	#include <linux/input.h>
	18	#include <linux/mutex.h>
934cd3f9	19	#include <linux/workqueue.h>
e14fa824 RV	20	#include <linux/leds-pca9532.h>
	21
	22	static const unsigned short normal_i2c[] = { /0x60,/ I2C_CLIENT_END};
	23	I2C_CLIENT_INSMOD_1(pca9532);
	24
	25	#define PCA9532_REG_PSC(i) (0x2+(i)*2)
	26	#define PCA9532_REG_PWM(i) (0x3+(i)*2)
	27	#define PCA9532_REG_LS0 0x6
	28	#define LED_REG(led) ((led>>2)+PCA9532_REG_LS0)
	29	#define LED_NUM(led) (led & 0x3)
	30
	31	#define ldev_to_led(c) container_of(c, struct pca9532_led, ldev)
	32
	33	struct pca9532_data {
	34	struct i2c_client *client;
	35	struct pca9532_led leds[16];
	36	struct mutex update_lock;
	37	struct input_dev *idev;
07172d2b	38	struct work_struct work;
e14fa824 RV	39	u8 pwm[2];
	40	u8 psc[2];
	41	};
	42
	43	static int pca9532_probe(struct i2c_client *client,
	44	const struct i2c_device_id *id);
	45	static int pca9532_remove(struct i2c_client *client);
	46
	47	static const struct i2c_device_id pca9532_id[] = {
	48	{ "pca9532", 0 },
	49	{ }
	50	};
	51
	52	MODULE_DEVICE_TABLE(i2c, pca9532_id);
	53
	54	static struct i2c_driver pca9532_driver = {
	55	.driver = {
	56	.name = "pca9532",
	57	},
	58	.probe = pca9532_probe,
	59	.remove = pca9532_remove,
	60	.id_table = pca9532_id,
	61	};
	62
	63	/* We have two pwm/blinkers, but 16 possible leds to drive. Additionaly,
	64	* the clever Thecus people are using one pwm to drive the beeper. So,
	65	* as a compromise we average one pwm to the values requested by all
	66	* leds that are not ON/OFF.
	67	* */
934cd3f9	68	static int pca9532_calcpwm(struct i2c_client *client, int pwm, int blink,
e14fa824 RV	69	enum led_brightness value)
	70	{
	71	int a = 0, b = 0, i = 0;
	72	struct pca9532_data *data = i2c_get_clientdata(client);
	73	for (i = 0; i < 16; i++) {
	74	if (data->leds[i].type == PCA9532_TYPE_LED &&
	75	data->leds[i].state == PCA9532_PWM0+pwm) {
	76	a++;
	77	b += data->leds[i].ldev.brightness;
	78	}
	79	}
	80	if (a == 0) {
	81	dev_err(&client->dev,
	82	"fear of division by zero %d/%d, wanted %d\n",
	83	b, a, value);
	84	return -EINVAL;
	85	}
	86	b = b/a;
	87	if (b > 0xFF)
	88	return -EINVAL;
e14fa824	89	data->pwm[pwm] = b;
07172d2b AO	90	data->psc[pwm] = blink;
07172d2b AO	91	return 0;
934cd3f9 RV	92	}
	93
	94	static int pca9532_setpwm(struct i2c_client *client, int pwm)
	95	{
07172d2b AO	96	struct pca9532_data *data = i2c_get_clientdata(client);
07172d2b AO	97	mutex_lock(&data->update_lock);
e14fa824 RV	98	i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(pwm),
e14fa824 RV	99	data->pwm[pwm]);
e14fa824 RV	100	i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(pwm),
	101	data->psc[pwm]);
	102	mutex_unlock(&data->update_lock);
	103	return 0;
	104	}
	105
	106	/* Set LED routing */
	107	static void pca9532_setled(struct pca9532_led *led)
	108	{
	109	struct i2c_client *client = led->client;
	110	struct pca9532_data *data = i2c_get_clientdata(client);
	111	char reg;
	112
	113	mutex_lock(&data->update_lock);
	114	reg = i2c_smbus_read_byte_data(client, LED_REG(led->id));
	115	/* zero led bits */
	116	reg = reg & ~(0x3<<LED_NUM(led->id)*2);
	117	/* set the new value */
	118	reg = reg \| (led->state << LED_NUM(led->id)*2);
	119	i2c_smbus_write_byte_data(client, LED_REG(led->id), reg);
	120	mutex_unlock(&data->update_lock);
	121	}
	122
	123	static void pca9532_set_brightness(struct led_classdev *led_cdev,
	124	enum led_brightness value)
	125	{
	126	int err = 0;
	127	struct pca9532_led *led = ldev_to_led(led_cdev);
	128
	129	if (value == LED_OFF)
	130	led->state = PCA9532_OFF;
	131	else if (value == LED_FULL)
	132	led->state = PCA9532_ON;
	133	else {
	134	led->state = PCA9532_PWM0; /* Thecus: hardcode one pwm */
07172d2b	135	err = pca9532_calcpwm(led->client, 0, 0, value);
e14fa824 RV	136	if (err)
	137	return; /* XXX: led api doesn't allow error code? */
	138	}
07172d2b	139	schedule_work(&led->work);
e14fa824 RV	140	}
	141
	142	static int pca9532_set_blink(struct led_classdev *led_cdev,
	143	unsigned long delay_on, unsigned long delay_off)
	144	{
	145	struct pca9532_led *led = ldev_to_led(led_cdev);
	146	struct i2c_client *client = led->client;
	147	int psc;
07172d2b	148	int err = 0;
e14fa824 RV	149
	150	if (delay_on == 0 && delay_off == 0) {
	151	/* led subsystem ask us for a blink rate */
	152	*delay_on = 1000;
	153	*delay_off = 1000;
	154	}
	155	if (delay_on != delay_off \|\| delay_on > 1690 \|\| delay_on < 6)
	156	return -EINVAL;
	157
	158	/* Thecus specific: only use PSC/PWM 0 */
	159	psc = (delay_on 152-1)/1000;
07172d2b AO	160	err = pca9532_calcpwm(client, 0, psc, led_cdev->brightness);
	161	if (err)
	162	return err;
	163	schedule_work(&led->work);
	164	return 0;
e14fa824 RV	165	}
e14fa824 RV	166
0d733579 SW	167	static int pca9532_event(struct input_dev *dev, unsigned int type,
0d733579 SW	168	unsigned int code, int value)
e14fa824 RV	169	{
	170	struct pca9532_data *data = input_get_drvdata(dev);
	171
7fbc3a9b	172	if (!(type == EV_SND && (code == SND_BELL \|\| code == SND_TONE)))
e14fa824 RV	173	return -1;
	174
	175	/* XXX: allow different kind of beeps with psc/pwm modifications */
	176	if (value > 1 && value < 32767)
	177	data->pwm[1] = 127;
	178	else
	179	data->pwm[1] = 0;
	180
07172d2b	181	schedule_work(&data->work);
934cd3f9	182
07172d2b	183	return 0;
934cd3f9 RV	184	}
	185
	186	static void pca9532_input_work(struct work_struct *work)
	187	{
07172d2b AO	188	struct pca9532_data *data;
07172d2b AO	189	data = container_of(work, struct pca9532_data, work);
e14fa824 RV	190	mutex_lock(&data->update_lock);
	191	i2c_smbus_write_byte_data(data->client, PCA9532_REG_PWM(1),
	192	data->pwm[1]);
	193	mutex_unlock(&data->update_lock);
934cd3f9	194	}
e14fa824	195
934cd3f9 RV	196	static void pca9532_led_work(struct work_struct *work)
934cd3f9 RV	197	{
07172d2b AO	198	struct pca9532_led *led;
	199	led = container_of(work, struct pca9532_led, work);
	200	if (led->state == PCA9532_PWM0)
	201	pca9532_setpwm(led->client, 0);
	202	pca9532_setled(led);
e14fa824 RV	203	}
	204
	205	static int pca9532_configure(struct i2c_client *client,
	206	struct pca9532_data data, struct pca9532_platform_data pdata)
	207	{
	208	int i, err = 0;
	209
	210	for (i = 0; i < 2; i++) {
	211	data->pwm[i] = pdata->pwm[i];
	212	data->psc[i] = pdata->psc[i];
	213	i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(i),
	214	data->pwm[i]);
	215	i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(i),
	216	data->psc[i]);
	217	}
	218
	219	for (i = 0; i < 16; i++) {
	220	struct pca9532_led *led = &data->leds[i];
	221	struct pca9532_led *pled = &pdata->leds[i];
	222	led->client = client;
	223	led->id = i;
	224	led->type = pled->type;
	225	switch (led->type) {
	226	case PCA9532_TYPE_NONE:
	227	break;
	228	case PCA9532_TYPE_LED:
	229	led->state = pled->state;
	230	led->name = pled->name;
	231	led->ldev.name = led->name;
	232	led->ldev.brightness = LED_OFF;
	233	led->ldev.brightness_set = pca9532_set_brightness;
	234	led->ldev.blink_set = pca9532_set_blink;
07172d2b	235	INIT_WORK(&led->work, pca9532_led_work);
f785d022 SW	236	err = led_classdev_register(&client->dev, &led->ldev);
f785d022 SW	237	if (err < 0) {
e14fa824 RV	238	dev_err(&client->dev,
	239	"couldn't register LED %s\n",
	240	led->name);
	241	goto exit;
	242	}
	243	pca9532_setled(led);
	244	break;
	245	case PCA9532_TYPE_N2100_BEEP:
	246	BUG_ON(data->idev);
	247	led->state = PCA9532_PWM1;
	248	pca9532_setled(led);
	249	data->idev = input_allocate_device();
	250	if (data->idev == NULL) {
	251	err = -ENOMEM;
	252	goto exit;
	253	}
	254	data->idev->name = pled->name;
	255	data->idev->phys = "i2c/pca9532";
	256	data->idev->id.bustype = BUS_HOST;
	257	data->idev->id.vendor = 0x001f;
	258	data->idev->id.product = 0x0001;
	259	data->idev->id.version = 0x0100;
	260	data->idev->evbit[0] = BIT_MASK(EV_SND);
	261	data->idev->sndbit[0] = BIT_MASK(SND_BELL) \|
	262	BIT_MASK(SND_TONE);
	263	data->idev->event = pca9532_event;
	264	input_set_drvdata(data->idev, data);
07172d2b	265	INIT_WORK(&data->work, pca9532_input_work);
e14fa824 RV	266	err = input_register_device(data->idev);
	267	if (err) {
	268	input_free_device(data->idev);
07172d2b	269	cancel_work_sync(&data->work);
e14fa824 RV	270	data->idev = NULL;
	271	goto exit;
	272	}
	273	break;
	274	}
	275	}
	276	return 0;
	277
	278	exit:
	279	if (i > 0)
	280	for (i = i - 1; i >= 0; i--)
	281	switch (data->leds[i].type) {
	282	case PCA9532_TYPE_NONE:
	283	break;
	284	case PCA9532_TYPE_LED:
	285	led_classdev_unregister(&data->leds[i].ldev);
07172d2b	286	cancel_work_sync(&data->leds[i].work);
e14fa824 RV	287	break;
	288	case PCA9532_TYPE_N2100_BEEP:
	289	if (data->idev != NULL) {
	290	input_unregister_device(data->idev);
	291	input_free_device(data->idev);
07172d2b	292	cancel_work_sync(&data->work);
e14fa824 RV	293	data->idev = NULL;
	294	}
	295	break;
	296	}
	297
	298	return err;
e14fa824 RV	299	}
	300
	301	static int pca9532_probe(struct i2c_client *client,
	302	const struct i2c_device_id *id)
	303	{
	304	struct pca9532_data *data = i2c_get_clientdata(client);
	305	struct pca9532_platform_data *pca9532_pdata = client->dev.platform_data;
f785d022 SW	306	int err;
	307
	308	if (!pca9532_pdata)
	309	return -EIO;
e14fa824 RV	310
	311	if (!i2c_check_functionality(client->adapter,
	312	I2C_FUNC_SMBUS_BYTE_DATA))
	313	return -EIO;
	314
f785d022	315	data = kzalloc(sizeof(*data), GFP_KERNEL);
e14fa824 RV	316	if (!data)
	317	return -ENOMEM;
	318
	319	dev_info(&client->dev, "setting platform data\n");
	320	i2c_set_clientdata(client, data);
	321	data->client = client;
	322	mutex_init(&data->update_lock);
	323
f785d022 SW	324	err = pca9532_configure(client, data, pca9532_pdata);
	325	if (err) {
	326	kfree(data);
	327	i2c_set_clientdata(client, NULL);
	328	}
e14fa824	329
f785d022	330	return err;
e14fa824 RV	331	}
	332
	333	static int pca9532_remove(struct i2c_client *client)
	334	{
	335	struct pca9532_data *data = i2c_get_clientdata(client);
	336	int i;
	337	for (i = 0; i < 16; i++)
	338	switch (data->leds[i].type) {
	339	case PCA9532_TYPE_NONE:
	340	break;
	341	case PCA9532_TYPE_LED:
	342	led_classdev_unregister(&data->leds[i].ldev);
07172d2b	343	cancel_work_sync(&data->leds[i].work);
e14fa824 RV	344	break;
	345	case PCA9532_TYPE_N2100_BEEP:
	346	if (data->idev != NULL) {
	347	input_unregister_device(data->idev);
	348	input_free_device(data->idev);
07172d2b	349	cancel_work_sync(&data->work);
e14fa824 RV	350	data->idev = NULL;
	351	}
	352	break;
	353	}
	354
	355	kfree(data);
	356	i2c_set_clientdata(client, NULL);
	357	return 0;
	358	}
	359
	360	static int __init pca9532_init(void)
	361	{
	362	return i2c_add_driver(&pca9532_driver);
	363	}
	364
	365	static void __exit pca9532_exit(void)
	366	{
	367	i2c_del_driver(&pca9532_driver);
	368	}
	369
b26e0ed4	370	MODULE_AUTHOR("Riku Voipio");
e14fa824 RV	371	MODULE_LICENSE("GPL");
	372	MODULE_DESCRIPTION("PCA 9532 LED dimmer");
	373
	374	module_init(pca9532_init);
	375	module_exit(pca9532_exit);
	376