[linux-2.6-block.git] / drivers / rtc / rtc-max8998.c

// SPDX-License-Identifier: GPL-2.0+
//
// 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>

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/bcd.h>
#include <linux/irqdomain.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 0;
}

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 = max8998->pdata;
	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;

	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);
		return ret;
	}

	if (!max8998->irq_domain)
		goto no_irq;

	info->irq = irq_create_mapping(max8998->irq_domain, MAX8998_IRQ_ALARM0);
	if (!info->irq) {
		dev_warn(&pdev->dev, "Failed to map alarm IRQ\n");
		goto no_irq;
	}

	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);

no_irq:
	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;
}

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

static struct platform_driver max8998_rtc_driver = {
	.driver		= {
		.name	= "max8998-rtc",
	},
	.probe		= max8998_rtc_probe,
	.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
734c5cd5 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// RTC driver for Maxim MAX8998
	4	//
	5	// Copyright (C) 2010 Samsung Electronics Co.Ltd
	6	// Author: Minkyu Kang <mk7.kang@samsung.com>
	7	// Author: Joonyoung Shim <jy0922.shim@samsung.com>
9b16c0a4 JS	8
	9	#include <linux/module.h>
	10	#include <linux/i2c.h>
	11	#include <linux/slab.h>
	12	#include <linux/bcd.h>
443c6ae2	13	#include <linux/irqdomain.h>
9b16c0a4 JS	14	#include <linux/rtc.h>
	15	#include <linux/platform_device.h>
	16	#include <linux/mfd/max8998.h>
	17	#include <linux/mfd/max8998-private.h>
337ce5d1	18	#include <linux/delay.h>
9b16c0a4 JS	19
	20	#define MAX8998_RTC_SEC 0x00
	21	#define MAX8998_RTC_MIN 0x01
	22	#define MAX8998_RTC_HOUR 0x02
	23	#define MAX8998_RTC_WEEKDAY 0x03
	24	#define MAX8998_RTC_DATE 0x04
	25	#define MAX8998_RTC_MONTH 0x05
	26	#define MAX8998_RTC_YEAR1 0x06
	27	#define MAX8998_RTC_YEAR2 0x07
	28	#define MAX8998_ALARM0_SEC 0x08
	29	#define MAX8998_ALARM0_MIN 0x09
	30	#define MAX8998_ALARM0_HOUR 0x0a
	31	#define MAX8998_ALARM0_WEEKDAY 0x0b
	32	#define MAX8998_ALARM0_DATE 0x0c
	33	#define MAX8998_ALARM0_MONTH 0x0d
	34	#define MAX8998_ALARM0_YEAR1 0x0e
	35	#define MAX8998_ALARM0_YEAR2 0x0f
	36	#define MAX8998_ALARM1_SEC 0x10
	37	#define MAX8998_ALARM1_MIN 0x11
	38	#define MAX8998_ALARM1_HOUR 0x12
	39	#define MAX8998_ALARM1_WEEKDAY 0x13
	40	#define MAX8998_ALARM1_DATE 0x14
	41	#define MAX8998_ALARM1_MONTH 0x15
	42	#define MAX8998_ALARM1_YEAR1 0x16
	43	#define MAX8998_ALARM1_YEAR2 0x17
	44	#define MAX8998_ALARM0_CONF 0x18
	45	#define MAX8998_ALARM1_CONF 0x19
	46	#define MAX8998_RTC_STATUS 0x1a
	47	#define MAX8998_WTSR_SMPL_CNTL 0x1b
	48	#define MAX8998_TEST 0x1f
	49
	50	#define HOUR_12 (1 << 7)
	51	#define HOUR_PM (1 << 5)
	52	#define ALARM0_STATUS (1 << 1)
	53	#define ALARM1_STATUS (1 << 2)
	54
	55	enum {
	56	RTC_SEC = 0,
	57	RTC_MIN,
	58	RTC_HOUR,
	59	RTC_WEEKDAY,
	60	RTC_DATE,
	61	RTC_MONTH,
	62	RTC_YEAR1,
	63	RTC_YEAR2,
	64	};
	65
	66	struct max8998_rtc_info {
	67	struct device *dev;
	68	struct max8998_dev *max8998;
	69	struct i2c_client *rtc;
	70	struct rtc_device *rtc_dev;
	71	int irq;
337ce5d1	72	bool lp3974_bug_workaround;
9b16c0a4 JS	73	};
	74
	75	static void max8998_data_to_tm(u8 data, struct rtc_time tm)
	76	{
	77	tm->tm_sec = bcd2bin(data[RTC_SEC]);
	78	tm->tm_min = bcd2bin(data[RTC_MIN]);
	79	if (data[RTC_HOUR] & HOUR_12) {
	80	tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f);
	81	if (data[RTC_HOUR] & HOUR_PM)
	82	tm->tm_hour += 12;
	83	} else
	84	tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f);
	85
	86	tm->tm_wday = data[RTC_WEEKDAY] & 0x07;
	87	tm->tm_mday = bcd2bin(data[RTC_DATE]);
	88	tm->tm_mon = bcd2bin(data[RTC_MONTH]);
	89	tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100;
	90	tm->tm_year -= 1900;
	91	}
	92
	93	static void max8998_tm_to_data(struct rtc_time tm, u8 data)
	94	{
	95	data[RTC_SEC] = bin2bcd(tm->tm_sec);
	96	data[RTC_MIN] = bin2bcd(tm->tm_min);
	97	data[RTC_HOUR] = bin2bcd(tm->tm_hour);
	98	data[RTC_WEEKDAY] = tm->tm_wday;
	99	data[RTC_DATE] = bin2bcd(tm->tm_mday);
	100	data[RTC_MONTH] = bin2bcd(tm->tm_mon);
	101	data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100);
	102	data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100);
	103	}
	104
	105	static int max8998_rtc_read_time(struct device dev, struct rtc_time tm)
	106	{
	107	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	108	u8 data[8];
	109	int ret;
	110
	111	ret = max8998_bulk_read(info->rtc, MAX8998_RTC_SEC, 8, data);
	112	if (ret < 0)
	113	return ret;
	114
	115	max8998_data_to_tm(data, tm);
	116
22652ba7	117	return 0;
9b16c0a4 JS	118	}
	119
	120	static int max8998_rtc_set_time(struct device dev, struct rtc_time tm)
	121	{
	122	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	123	u8 data[8];
337ce5d1	124	int ret;
9b16c0a4 JS	125
	126	max8998_tm_to_data(tm, data);
	127
337ce5d1 MH	128	ret = max8998_bulk_write(info->rtc, MAX8998_RTC_SEC, 8, data);
	129
	130	if (info->lp3974_bug_workaround)
	131	msleep(2000);
	132
	133	return ret;
9b16c0a4 JS	134	}
	135
	136	static int max8998_rtc_read_alarm(struct device dev, struct rtc_wkalrm alrm)
	137	{
	138	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	139	u8 data[8];
	140	u8 val;
	141	int ret;
	142
	143	ret = max8998_bulk_read(info->rtc, MAX8998_ALARM0_SEC, 8, data);
	144	if (ret < 0)
	145	return ret;
	146
	147	max8998_data_to_tm(data, &alrm->time);
	148
	149	ret = max8998_read_reg(info->rtc, MAX8998_ALARM0_CONF, &val);
	150	if (ret < 0)
	151	return ret;
	152
	153	alrm->enabled = !!val;
	154
	155	ret = max8998_read_reg(info->rtc, MAX8998_RTC_STATUS, &val);
	156	if (ret < 0)
	157	return ret;
	158
	159	if (val & ALARM0_STATUS)
	160	alrm->pending = 1;
	161	else
	162	alrm->pending = 0;
	163
	164	return 0;
	165	}
	166
	167	static int max8998_rtc_stop_alarm(struct max8998_rtc_info *info)
	168	{
337ce5d1 MH	169	int ret = max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, 0);
	170
	171	if (info->lp3974_bug_workaround)
	172	msleep(2000);
	173
	174	return ret;
9b16c0a4 JS	175	}
	176
	177	static int max8998_rtc_start_alarm(struct max8998_rtc_info *info)
	178	{
337ce5d1 MH	179	int ret;
	180	u8 alarm0_conf = 0x77;
	181
	182	/* LP3974 with delay bug chips has rtc alarm bugs with "MONTH" field */
	183	if (info->lp3974_bug_workaround)
	184	alarm0_conf = 0x57;
	185
	186	ret = max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, alarm0_conf);
	187
	188	if (info->lp3974_bug_workaround)
	189	msleep(2000);
	190
	191	return ret;
9b16c0a4 JS	192	}
	193
	194	static int max8998_rtc_set_alarm(struct device dev, struct rtc_wkalrm alrm)
	195	{
	196	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	197	u8 data[8];
	198	int ret;
	199
	200	max8998_tm_to_data(&alrm->time, data);
	201
	202	ret = max8998_rtc_stop_alarm(info);
	203	if (ret < 0)
	204	return ret;
	205
	206	ret = max8998_bulk_write(info->rtc, MAX8998_ALARM0_SEC, 8, data);
	207	if (ret < 0)
	208	return ret;
	209
337ce5d1 MH	210	if (info->lp3974_bug_workaround)
	211	msleep(2000);
	212
9b16c0a4	213	if (alrm->enabled)
337ce5d1	214	ret = max8998_rtc_start_alarm(info);
9b16c0a4	215
337ce5d1	216	return ret;
9b16c0a4 JS	217	}
	218
	219	static int max8998_rtc_alarm_irq_enable(struct device *dev,
	220	unsigned int enabled)
	221	{
	222	struct max8998_rtc_info *info = dev_get_drvdata(dev);
	223
	224	if (enabled)
	225	return max8998_rtc_start_alarm(info);
	226	else
	227	return max8998_rtc_stop_alarm(info);
	228	}
	229
	230	static irqreturn_t max8998_rtc_alarm_irq(int irq, void *data)
	231	{
	232	struct max8998_rtc_info *info = data;
	233
	234	rtc_update_irq(info->rtc_dev, 1, RTC_IRQF \| RTC_AF);
	235
	236	return IRQ_HANDLED;
	237	}
	238
	239	static const struct rtc_class_ops max8998_rtc_ops = {
	240	.read_time = max8998_rtc_read_time,
	241	.set_time = max8998_rtc_set_time,
	242	.read_alarm = max8998_rtc_read_alarm,
	243	.set_alarm = max8998_rtc_set_alarm,
	244	.alarm_irq_enable = max8998_rtc_alarm_irq_enable,
	245	};
	246
5a167f45	247	static int max8998_rtc_probe(struct platform_device *pdev)
9b16c0a4 JS	248	{
9b16c0a4 JS	249	struct max8998_dev *max8998 = dev_get_drvdata(pdev->dev.parent);
ee999fb3	250	struct max8998_platform_data *pdata = max8998->pdata;
9b16c0a4 JS	251	struct max8998_rtc_info *info;
	252	int ret;
	253
8925e31a JH	254	info = devm_kzalloc(&pdev->dev, sizeof(struct max8998_rtc_info),
8925e31a JH	255	GFP_KERNEL);
9b16c0a4 JS	256	if (!info)
	257	return -ENOMEM;
	258
	259	info->dev = &pdev->dev;
	260	info->max8998 = max8998;
	261	info->rtc = max8998->rtc;
9b16c0a4	262
03cf7c47 JS	263	platform_set_drvdata(pdev, info);
03cf7c47 JS	264
8925e31a	265	info->rtc_dev = devm_rtc_device_register(&pdev->dev, "max8998-rtc",
9b16c0a4 JS	266	&max8998_rtc_ops, THIS_MODULE);
	267
	268	if (IS_ERR(info->rtc_dev)) {
	269	ret = PTR_ERR(info->rtc_dev);
	270	dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
4802f224	271	return ret;
9b16c0a4 JS	272	}
9b16c0a4 JS	273
443c6ae2 TF	274	if (!max8998->irq_domain)
	275	goto no_irq;
	276
	277	info->irq = irq_create_mapping(max8998->irq_domain, MAX8998_IRQ_ALARM0);
	278	if (!info->irq) {
	279	dev_warn(&pdev->dev, "Failed to map alarm IRQ\n");
	280	goto no_irq;
	281	}
	282
8925e31a JH	283	ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
8925e31a JH	284	max8998_rtc_alarm_irq, 0, "rtc-alarm0", info);
337ce5d1	285
9b16c0a4 JS	286	if (ret < 0)
	287	dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
	288	info->irq, ret);
	289
443c6ae2	290	no_irq:
337ce5d1	291	dev_info(&pdev->dev, "RTC CHIP NAME: %s\n", pdev->id_entry->name);
43c523bf	292	if (pdata && pdata->rtc_delay) {
337ce5d1 MH	293	info->lp3974_bug_workaround = true;
	294	dev_warn(&pdev->dev, "LP3974 with RTC REGERR option."
	295	" RTC updates will be extremely slow.\n");
	296	}
	297
9b16c0a4	298	return 0;
9b16c0a4 JS	299	}
9b16c0a4 JS	300
337ce5d1 MH	301	static const struct platform_device_id max8998_rtc_id[] = {
	302	{ "max8998-rtc", TYPE_MAX8998 },
	303	{ "lp3974-rtc", TYPE_LP3974 },
	304	{ }
	305	};
8ad0f5b6	306	MODULE_DEVICE_TABLE(platform, max8998_rtc_id);
337ce5d1	307
9b16c0a4 JS	308	static struct platform_driver max8998_rtc_driver = {
	309	.driver = {
	310	.name = "max8998-rtc",
9b16c0a4 JS	311	},
9b16c0a4 JS	312	.probe = max8998_rtc_probe,
337ce5d1	313	.id_table = max8998_rtc_id,
9b16c0a4 JS	314	};
9b16c0a4 JS	315
0c4eae66	316	module_platform_driver(max8998_rtc_driver);
9b16c0a4 JS	317
	318	MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
	319	MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
	320	MODULE_DESCRIPTION("Maxim MAX8998 RTC driver");
	321	MODULE_LICENSE("GPL");