[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / rtc / rtc-max8998.c

/*
 * RTC driver for Maxim MAX8998
 *
 * Copyright (C) 2010 Samsung Electronics Co.Ltd
 * Author: Minkyu Kang <mk7.kang@samsung.com>
 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/bcd.h>
#include <linux/rtc.h>
#include <linux/platform_device.h>
#include <linux/mfd/max8998.h>
#include <linux/mfd/max8998-private.h>
#include <linux/delay.h>

#define MAX8998_RTC_SEC			0x00
#define MAX8998_RTC_MIN			0x01
#define MAX8998_RTC_HOUR		0x02
#define MAX8998_RTC_WEEKDAY		0x03
#define MAX8998_RTC_DATE		0x04
#define MAX8998_RTC_MONTH		0x05
#define MAX8998_RTC_YEAR1		0x06
#define MAX8998_RTC_YEAR2		0x07
#define MAX8998_ALARM0_SEC		0x08
#define MAX8998_ALARM0_MIN		0x09
#define MAX8998_ALARM0_HOUR		0x0a
#define MAX8998_ALARM0_WEEKDAY		0x0b
#define MAX8998_ALARM0_DATE		0x0c
#define MAX8998_ALARM0_MONTH		0x0d
#define MAX8998_ALARM0_YEAR1		0x0e
#define MAX8998_ALARM0_YEAR2		0x0f
#define MAX8998_ALARM1_SEC		0x10
#define MAX8998_ALARM1_MIN		0x11
#define MAX8998_ALARM1_HOUR		0x12
#define MAX8998_ALARM1_WEEKDAY		0x13
#define MAX8998_ALARM1_DATE		0x14
#define MAX8998_ALARM1_MONTH		0x15
#define MAX8998_ALARM1_YEAR1		0x16
#define MAX8998_ALARM1_YEAR2		0x17
#define MAX8998_ALARM0_CONF		0x18
#define MAX8998_ALARM1_CONF		0x19
#define MAX8998_RTC_STATUS		0x1a
#define MAX8998_WTSR_SMPL_CNTL		0x1b
#define MAX8998_TEST			0x1f

#define HOUR_12				(1 << 7)
#define HOUR_PM				(1 << 5)
#define ALARM0_STATUS			(1 << 1)
#define ALARM1_STATUS			(1 << 2)

enum {
	RTC_SEC = 0,
	RTC_MIN,
	RTC_HOUR,
	RTC_WEEKDAY,
	RTC_DATE,
	RTC_MONTH,
	RTC_YEAR1,
	RTC_YEAR2,
};

struct max8998_rtc_info {
	struct device		*dev;
	struct max8998_dev	*max8998;
	struct i2c_client	*rtc;
	struct rtc_device	*rtc_dev;
	int irq;
	bool lp3974_bug_workaround;
};

static void max8998_data_to_tm(u8 *data, struct rtc_time *tm)
{
	tm->tm_sec = bcd2bin(data[RTC_SEC]);
	tm->tm_min = bcd2bin(data[RTC_MIN]);
	if (data[RTC_HOUR] & HOUR_12) {
		tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f);
		if (data[RTC_HOUR] & HOUR_PM)
			tm->tm_hour += 12;
	} else
		tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f);

	tm->tm_wday = data[RTC_WEEKDAY] & 0x07;
	tm->tm_mday = bcd2bin(data[RTC_DATE]);
	tm->tm_mon = bcd2bin(data[RTC_MONTH]);
	tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100;
	tm->tm_year -= 1900;
}

static void max8998_tm_to_data(struct rtc_time *tm, u8 *data)
{
	data[RTC_SEC] = bin2bcd(tm->tm_sec);
	data[RTC_MIN] = bin2bcd(tm->tm_min);
	data[RTC_HOUR] = bin2bcd(tm->tm_hour);
	data[RTC_WEEKDAY] = tm->tm_wday;
	data[RTC_DATE] = bin2bcd(tm->tm_mday);
	data[RTC_MONTH] = bin2bcd(tm->tm_mon);
	data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100);
	data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100);
}

static int max8998_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	u8 data[8];
	int ret;

	ret = max8998_bulk_read(info->rtc, MAX8998_RTC_SEC, 8, data);
	if (ret < 0)
		return ret;

	max8998_data_to_tm(data, tm);

	return rtc_valid_tm(tm);
}

static int max8998_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	u8 data[8];
	int ret;

	max8998_tm_to_data(tm, data);

	ret = max8998_bulk_write(info->rtc, MAX8998_RTC_SEC, 8, data);

	if (info->lp3974_bug_workaround)
		msleep(2000);

	return ret;
}

static int max8998_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	u8 data[8];
	u8 val;
	int ret;

	ret = max8998_bulk_read(info->rtc, MAX8998_ALARM0_SEC, 8, data);
	if (ret < 0)
		return ret;

	max8998_data_to_tm(data, &alrm->time);

	ret = max8998_read_reg(info->rtc, MAX8998_ALARM0_CONF, &val);
	if (ret < 0)
		return ret;

	alrm->enabled = !!val;

	ret = max8998_read_reg(info->rtc, MAX8998_RTC_STATUS, &val);
	if (ret < 0)
		return ret;

	if (val & ALARM0_STATUS)
		alrm->pending = 1;
	else
		alrm->pending = 0;

	return 0;
}

static int max8998_rtc_stop_alarm(struct max8998_rtc_info *info)
{
	int ret = max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, 0);

	if (info->lp3974_bug_workaround)
		msleep(2000);

	return ret;
}

static int max8998_rtc_start_alarm(struct max8998_rtc_info *info)
{
	int ret;
	u8 alarm0_conf = 0x77;

	/* LP3974 with delay bug chips has rtc alarm bugs with "MONTH" field */
	if (info->lp3974_bug_workaround)
		alarm0_conf = 0x57;

	ret = max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, alarm0_conf);

	if (info->lp3974_bug_workaround)
		msleep(2000);

	return ret;
}

static int max8998_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	u8 data[8];
	int ret;

	max8998_tm_to_data(&alrm->time, data);

	ret = max8998_rtc_stop_alarm(info);
	if (ret < 0)
		return ret;

	ret = max8998_bulk_write(info->rtc, MAX8998_ALARM0_SEC, 8, data);
	if (ret < 0)
		return ret;

	if (info->lp3974_bug_workaround)
		msleep(2000);

	if (alrm->enabled)
		ret = max8998_rtc_start_alarm(info);

	return ret;
}

static int max8998_rtc_alarm_irq_enable(struct device *dev,
					unsigned int enabled)
{
	struct max8998_rtc_info *info = dev_get_drvdata(dev);

	if (enabled)
		return max8998_rtc_start_alarm(info);
	else
		return max8998_rtc_stop_alarm(info);
}

static irqreturn_t max8998_rtc_alarm_irq(int irq, void *data)
{
	struct max8998_rtc_info *info = data;

	rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);

	return IRQ_HANDLED;
}

static const struct rtc_class_ops max8998_rtc_ops = {
	.read_time = max8998_rtc_read_time,
	.set_time = max8998_rtc_set_time,
	.read_alarm = max8998_rtc_read_alarm,
	.set_alarm = max8998_rtc_set_alarm,
	.alarm_irq_enable = max8998_rtc_alarm_irq_enable,
};

static int max8998_rtc_probe(struct platform_device *pdev)
{
	struct max8998_dev *max8998 = dev_get_drvdata(pdev->dev.parent);
	struct max8998_platform_data *pdata = dev_get_platdata(max8998->dev);
	struct max8998_rtc_info *info;
	int ret;

	info = devm_kzalloc(&pdev->dev, sizeof(struct max8998_rtc_info),
			GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	info->dev = &pdev->dev;
	info->max8998 = max8998;
	info->rtc = max8998->rtc;
	info->irq = max8998->irq_base + MAX8998_IRQ_ALARM0;

	platform_set_drvdata(pdev, info);

	info->rtc_dev = devm_rtc_device_register(&pdev->dev, "max8998-rtc",
			&max8998_rtc_ops, THIS_MODULE);

	if (IS_ERR(info->rtc_dev)) {
		ret = PTR_ERR(info->rtc_dev);
		dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
		goto out_rtc;
	}

	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
				max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);

	if (ret < 0)
		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
			info->irq, ret);

	dev_info(&pdev->dev, "RTC CHIP NAME: %s\n", pdev->id_entry->name);
	if (pdata && pdata->rtc_delay) {
		info->lp3974_bug_workaround = true;
		dev_warn(&pdev->dev, "LP3974 with RTC REGERR option."
				" RTC updates will be extremely slow.\n");
	}

	return 0;

out_rtc:
	platform_set_drvdata(pdev, NULL);
	return ret;
}

static int max8998_rtc_remove(struct platform_device *pdev)
{
	return 0;
}

static const struct platform_device_id max8998_rtc_id[] = {
	{ "max8998-rtc", TYPE_MAX8998 },
	{ "lp3974-rtc", TYPE_LP3974 },
	{ }
};

static struct platform_driver max8998_rtc_driver = {
	.driver		= {
		.name	= "max8998-rtc",
		.owner	= THIS_MODULE,
	},
	.probe		= max8998_rtc_probe,
	.remove		= max8998_rtc_remove,
	.id_table	= max8998_rtc_id,
};

module_platform_driver(max8998_rtc_driver);

MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
MODULE_DESCRIPTION("Maxim MAX8998 RTC driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
9b16c0a4 JS	1	/*
	2	* RTC driver for Maxim MAX8998
	3	*
	4	* Copyright (C) 2010 Samsung Electronics Co.Ltd
	5	* Author: Minkyu Kang <mk7.kang@samsung.com>
	6	* Author: Joonyoung Shim <jy0922.shim@samsung.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/i2c.h>
	17	#include <linux/slab.h>
	18	#include <linux/bcd.h>
	19	#include <linux/rtc.h>
	20	#include <linux/platform_device.h>
	21	#include <linux/mfd/max8998.h>
	22	#include <linux/mfd/max8998-private.h>
337ce5d1	23	#include <linux/delay.h>
9b16c0a4 JS	24
	25	#define MAX8998_RTC_SEC 0x00
	26	#define MAX8998_RTC_MIN 0x01
	27	#define MAX8998_RTC_HOUR 0x02
	28	#define MAX8998_RTC_WEEKDAY 0x03
	29	#define MAX8998_RTC_DATE 0x04
	30	#define MAX8998_RTC_MONTH 0x05
	31	#define MAX8998_RTC_YEAR1 0x06
	32	#define MAX8998_RTC_YEAR2 0x07
	33	#define MAX8998_ALARM0_SEC 0x08
	34	#define MAX8998_ALARM0_MIN 0x09
	35	#define MAX8998_ALARM0_HOUR 0x0a
	36	#define MAX8998_ALARM0_WEEKDAY 0x0b
	37	#define MAX8998_ALARM0_DATE 0x0c
	38	#define MAX8998_ALARM0_MONTH 0x0d
	39	#define MAX8998_ALARM0_YEAR1 0x0e
	40	#define MAX8998_ALARM0_YEAR2 0x0f
	41	#define MAX8998_ALARM1_SEC 0x10
	42	#define MAX8998_ALARM1_MIN 0x11
	43	#define MAX8998_ALARM1_HOUR 0x12
	44	#define MAX8998_ALARM1_WEEKDAY 0x13
	45	#define MAX8998_ALARM1_DATE 0x14
	46	#define MAX8998_ALARM1_MONTH 0x15
	47	#define MAX8998_ALARM1_YEAR1 0x16
	48	#define MAX8998_ALARM1_YEAR2 0x17
	49	#define MAX8998_ALARM0_CONF 0x18
	50	#define MAX8998_ALARM1_CONF 0x19
	51	#define MAX8998_RTC_STATUS 0x1a
	52	#define MAX8998_WTSR_SMPL_CNTL 0x1b
	53	#define MAX8998_TEST 0x1f
	54
	55	#define HOUR_12 (1 << 7)
	56	#define HOUR_PM (1 << 5)
	57	#define ALARM0_STATUS (1 << 1)
	58	#define ALARM1_STATUS (1 << 2)
	59
	60	enum {
	61	RTC_SEC = 0,
	62	RTC_MIN,
	63	RTC_HOUR,
	64	RTC_WEEKDAY,
	65	RTC_DATE,
	66	RTC_MONTH,
	67	RTC_YEAR1,
	68	RTC_YEAR2,
	69	};
	70
	71	struct max8998_rtc_info {
	72	struct device *dev;
	73	struct max8998_dev *max8998;
	74	struct i2c_client *rtc;
	75	struct rtc_device *rtc_dev;
	76	int irq;
337ce5d1	77	bool lp3974_bug_workaround;
9b16c0a4 JS	78	};
	79
	80	static void max8998_data_to_tm(u8 data, struct rtc_time tm)
	81	{
	82	tm->tm_sec = bcd2bin(data[RTC_SEC]);
	83	tm->tm_min = bcd2bin(data[RTC_MIN]);
	84	if (data[RTC_HOUR] & HOUR_12) {
	85	tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f);
	86	if (data[RTC_HOUR] & HOUR_PM)
	87	tm->tm_hour += 12;
	88	} else
	89	tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f);
	90
	91	tm->tm_wday = data[RTC_WEEKDAY] & 0x07;
	92	tm->tm_mday = bcd2bin(data[RTC_DATE]);
	93	tm->tm_mon = bcd2bin(data[RTC_MONTH]);
	94	tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100;
	95	tm->tm_year -= 1900;
	96	}
	97
	98	static void max8998_tm_to_data(struct rtc_time tm, u8 data)
	99	{
	100	data[RTC_SEC] = bin2bcd(tm->tm_sec);
	101	data[RTC_MIN] = bin2bcd(tm->tm_min);
	102	data[RTC_HOUR] = bin2bcd(tm->tm_hour);
	103	data[RTC_WEEKDAY] = tm->tm_wday;
	104	data[RTC_DATE] = bin2bcd(tm->tm_mday);
	105	data[RTC_MONTH] = bin2bcd(tm->tm_mon);
	106	data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100);
	107	data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100);
	108	}
	109
	110	static int max8998_rtc_read_time(struct device dev, struct rtc_time tm)
	111	{
	112	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	113	u8 data[8];
	114	int ret;
	115
	116	ret = max8998_bulk_read(info->rtc, MAX8998_RTC_SEC, 8, data);
	117	if (ret < 0)
	118	return ret;
	119
	120	max8998_data_to_tm(data, tm);
	121
	122	return rtc_valid_tm(tm);
	123	}
	124
	125	static int max8998_rtc_set_time(struct device dev, struct rtc_time tm)
	126	{
	127	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	128	u8 data[8];
337ce5d1	129	int ret;
9b16c0a4 JS	130
	131	max8998_tm_to_data(tm, data);
	132
337ce5d1 MH	133	ret = max8998_bulk_write(info->rtc, MAX8998_RTC_SEC, 8, data);
	134
	135	if (info->lp3974_bug_workaround)
	136	msleep(2000);
	137
	138	return ret;
9b16c0a4 JS	139	}
	140
	141	static int max8998_rtc_read_alarm(struct device dev, struct rtc_wkalrm alrm)
	142	{
	143	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	144	u8 data[8];
	145	u8 val;
	146	int ret;
	147
	148	ret = max8998_bulk_read(info->rtc, MAX8998_ALARM0_SEC, 8, data);
	149	if (ret < 0)
	150	return ret;
	151
	152	max8998_data_to_tm(data, &alrm->time);
	153
	154	ret = max8998_read_reg(info->rtc, MAX8998_ALARM0_CONF, &val);
	155	if (ret < 0)
	156	return ret;
	157
	158	alrm->enabled = !!val;
	159
	160	ret = max8998_read_reg(info->rtc, MAX8998_RTC_STATUS, &val);
	161	if (ret < 0)
	162	return ret;
	163
	164	if (val & ALARM0_STATUS)
	165	alrm->pending = 1;
	166	else
	167	alrm->pending = 0;
	168
	169	return 0;
	170	}
	171
	172	static int max8998_rtc_stop_alarm(struct max8998_rtc_info *info)
	173	{
337ce5d1 MH	174	int ret = max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, 0);
	175
	176	if (info->lp3974_bug_workaround)
	177	msleep(2000);
	178
	179	return ret;
9b16c0a4 JS	180	}
	181
	182	static int max8998_rtc_start_alarm(struct max8998_rtc_info *info)
	183	{
337ce5d1 MH	184	int ret;
	185	u8 alarm0_conf = 0x77;
	186
	187	/* LP3974 with delay bug chips has rtc alarm bugs with "MONTH" field */
	188	if (info->lp3974_bug_workaround)
	189	alarm0_conf = 0x57;
	190
	191	ret = max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, alarm0_conf);
	192
	193	if (info->lp3974_bug_workaround)
	194	msleep(2000);
	195
	196	return ret;
9b16c0a4 JS	197	}
	198
	199	static int max8998_rtc_set_alarm(struct device dev, struct rtc_wkalrm alrm)
	200	{
	201	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	202	u8 data[8];
	203	int ret;
	204
	205	max8998_tm_to_data(&alrm->time, data);
	206
	207	ret = max8998_rtc_stop_alarm(info);
	208	if (ret < 0)
	209	return ret;
	210
	211	ret = max8998_bulk_write(info->rtc, MAX8998_ALARM0_SEC, 8, data);
	212	if (ret < 0)
	213	return ret;
	214
337ce5d1 MH	215	if (info->lp3974_bug_workaround)
	216	msleep(2000);
	217
9b16c0a4	218	if (alrm->enabled)
337ce5d1	219	ret = max8998_rtc_start_alarm(info);
9b16c0a4	220
337ce5d1	221	return ret;
9b16c0a4 JS	222	}
	223
	224	static int max8998_rtc_alarm_irq_enable(struct device *dev,
	225	unsigned int enabled)
	226	{
	227	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	228
	229	if (enabled)
	230	return max8998_rtc_start_alarm(info);
	231	else
	232	return max8998_rtc_stop_alarm(info);
	233	}
	234
	235	static irqreturn_t max8998_rtc_alarm_irq(int irq, void *data)
	236	{
	237	struct max8998_rtc_info *info = data;
	238
	239	rtc_update_irq(info->rtc_dev, 1, RTC_IRQF \| RTC_AF);
	240
	241	return IRQ_HANDLED;
	242	}
	243
	244	static const struct rtc_class_ops max8998_rtc_ops = {
	245	.read_time = max8998_rtc_read_time,
	246	.set_time = max8998_rtc_set_time,
	247	.read_alarm = max8998_rtc_read_alarm,
	248	.set_alarm = max8998_rtc_set_alarm,
	249	.alarm_irq_enable = max8998_rtc_alarm_irq_enable,
	250	};
	251
5a167f45	252	static int max8998_rtc_probe(struct platform_device *pdev)
9b16c0a4 JS	253	{
9b16c0a4 JS	254	struct max8998_dev *max8998 = dev_get_drvdata(pdev->dev.parent);
337ce5d1	255	struct max8998_platform_data *pdata = dev_get_platdata(max8998->dev);
9b16c0a4 JS	256	struct max8998_rtc_info *info;
	257	int ret;
	258
8925e31a JH	259	info = devm_kzalloc(&pdev->dev, sizeof(struct max8998_rtc_info),
8925e31a JH	260	GFP_KERNEL);
9b16c0a4 JS	261	if (!info)
	262	return -ENOMEM;
	263
	264	info->dev = &pdev->dev;
	265	info->max8998 = max8998;
	266	info->rtc = max8998->rtc;
	267	info->irq = max8998->irq_base + MAX8998_IRQ_ALARM0;
	268
03cf7c47 JS	269	platform_set_drvdata(pdev, info);
03cf7c47 JS	270
8925e31a	271	info->rtc_dev = devm_rtc_device_register(&pdev->dev, "max8998-rtc",
9b16c0a4 JS	272	&max8998_rtc_ops, THIS_MODULE);
	273
	274	if (IS_ERR(info->rtc_dev)) {
	275	ret = PTR_ERR(info->rtc_dev);
	276	dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
	277	goto out_rtc;
	278	}
	279
8925e31a JH	280	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
8925e31a JH	281	max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);
337ce5d1	282
9b16c0a4 JS	283	if (ret < 0)
	284	dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
	285	info->irq, ret);
	286
337ce5d1	287	dev_info(&pdev->dev, "RTC CHIP NAME: %s\n", pdev->id_entry->name);
43c523bf	288	if (pdata && pdata->rtc_delay) {
337ce5d1 MH	289	info->lp3974_bug_workaround = true;
	290	dev_warn(&pdev->dev, "LP3974 with RTC REGERR option."
	291	" RTC updates will be extremely slow.\n");
	292	}
	293
9b16c0a4 JS	294	return 0;
	295
	296	out_rtc:
03cf7c47	297	platform_set_drvdata(pdev, NULL);
9b16c0a4 JS	298	return ret;
	299	}
	300
5a167f45	301	static int max8998_rtc_remove(struct platform_device *pdev)
9b16c0a4	302	{
9b16c0a4 JS	303	return 0;
	304	}
	305
337ce5d1 MH	306	static const struct platform_device_id max8998_rtc_id[] = {
	307	{ "max8998-rtc", TYPE_MAX8998 },
	308	{ "lp3974-rtc", TYPE_LP3974 },
	309	{ }
	310	};
	311
9b16c0a4 JS	312	static struct platform_driver max8998_rtc_driver = {
	313	.driver = {
	314	.name = "max8998-rtc",
	315	.owner = THIS_MODULE,
	316	},
	317	.probe = max8998_rtc_probe,
5a167f45	318	.remove = max8998_rtc_remove,
337ce5d1	319	.id_table = max8998_rtc_id,
9b16c0a4 JS	320	};
9b16c0a4 JS	321
0c4eae66	322	module_platform_driver(max8998_rtc_driver);
9b16c0a4 JS	323
	324	MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
	325	MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
	326	MODULE_DESCRIPTION("Maxim MAX8998 RTC driver");
	327	MODULE_LICENSE("GPL");