[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / rtc / rtc-tps65910.c

/*
 * rtc-tps65910.c -- TPS65910 Real Time Clock interface
 *
 * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
 * Author: Venu Byravarasu <vbyravarasu@nvidia.com>
 *
 * Based on original TI driver rtc-twl.c
 *   Copyright (C) 2007 MontaVista Software, Inc
 *   Author: Alexandre Rusev <source@mvista.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/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/interrupt.h>
#include <linux/mfd/tps65910.h>

struct tps65910_rtc {
	struct rtc_device	*rtc;
	int irq;
};

/* Total number of RTC registers needed to set time*/
#define NUM_TIME_REGS	(TPS65910_YEARS - TPS65910_SECONDS + 1)

static int tps65910_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
{
	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	u8 val = 0;

	if (enabled)
		val = TPS65910_RTC_INTERRUPTS_IT_ALARM;

	return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS, val);
}

/*
 * Gets current tps65910 RTC time and date parameters.
 *
 * The RTC's time/alarm representation is not what gmtime(3) requires
 * Linux to use:
 *
 *  - Months are 1..12 vs Linux 0-11
 *  - Years are 0..99 vs Linux 1900..N (we assume 21st century)
 */
static int tps65910_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
	unsigned char rtc_data[NUM_TIME_REGS];
	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	int ret;

	/* Copy RTC counting registers to static registers or latches */
	ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL,
		TPS65910_RTC_CTRL_GET_TIME, TPS65910_RTC_CTRL_GET_TIME);
	if (ret < 0) {
		dev_err(dev, "RTC CTRL reg update failed with err:%d\n", ret);
		return ret;
	}

	ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, rtc_data,
		NUM_TIME_REGS);
	if (ret < 0) {
		dev_err(dev, "reading from RTC failed with err:%d\n", ret);
		return ret;
	}

	tm->tm_sec = bcd2bin(rtc_data[0]);
	tm->tm_min = bcd2bin(rtc_data[1]);
	tm->tm_hour = bcd2bin(rtc_data[2]);
	tm->tm_mday = bcd2bin(rtc_data[3]);
	tm->tm_mon = bcd2bin(rtc_data[4]) - 1;
	tm->tm_year = bcd2bin(rtc_data[5]) + 100;

	return ret;
}

static int tps65910_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
	unsigned char rtc_data[NUM_TIME_REGS];
	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	int ret;

	rtc_data[0] = bin2bcd(tm->tm_sec);
	rtc_data[1] = bin2bcd(tm->tm_min);
	rtc_data[2] = bin2bcd(tm->tm_hour);
	rtc_data[3] = bin2bcd(tm->tm_mday);
	rtc_data[4] = bin2bcd(tm->tm_mon + 1);
	rtc_data[5] = bin2bcd(tm->tm_year - 100);

	/* Stop RTC while updating the RTC time registers */
	ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL,
		TPS65910_RTC_CTRL_STOP_RTC, 0);
	if (ret < 0) {
		dev_err(dev, "RTC stop failed with err:%d\n", ret);
		return ret;
	}

	/* update all the time registers in one shot */
	ret = regmap_bulk_write(tps->regmap, TPS65910_SECONDS, rtc_data,
		NUM_TIME_REGS);
	if (ret < 0) {
		dev_err(dev, "rtc_set_time error %d\n", ret);
		return ret;
	}

	/* Start back RTC */
	ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL,
		TPS65910_RTC_CTRL_STOP_RTC, 1);
	if (ret < 0)
		dev_err(dev, "RTC start failed with err:%d\n", ret);

	return ret;
}

/*
 * Gets current tps65910 RTC alarm time.
 */
static int tps65910_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
	unsigned char alarm_data[NUM_TIME_REGS];
	u32 int_val;
	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	int ret;

	ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, alarm_data,
		NUM_TIME_REGS);
	if (ret < 0) {
		dev_err(dev, "rtc_read_alarm error %d\n", ret);
		return ret;
	}

	alm->time.tm_sec = bcd2bin(alarm_data[0]);
	alm->time.tm_min = bcd2bin(alarm_data[1]);
	alm->time.tm_hour = bcd2bin(alarm_data[2]);
	alm->time.tm_mday = bcd2bin(alarm_data[3]);
	alm->time.tm_mon = bcd2bin(alarm_data[4]) - 1;
	alm->time.tm_year = bcd2bin(alarm_data[5]) + 100;

	ret = regmap_read(tps->regmap, TPS65910_RTC_INTERRUPTS, &int_val);
	if (ret < 0)
		return ret;

	if (int_val & TPS65910_RTC_INTERRUPTS_IT_ALARM)
		alm->enabled = 1;

	return ret;
}

static int tps65910_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
	unsigned char alarm_data[NUM_TIME_REGS];
	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	int ret;

	ret = tps65910_rtc_alarm_irq_enable(dev, 0);
	if (ret)
		return ret;

	alarm_data[0] = bin2bcd(alm->time.tm_sec);
	alarm_data[1] = bin2bcd(alm->time.tm_min);
	alarm_data[2] = bin2bcd(alm->time.tm_hour);
	alarm_data[3] = bin2bcd(alm->time.tm_mday);
	alarm_data[4] = bin2bcd(alm->time.tm_mon + 1);
	alarm_data[5] = bin2bcd(alm->time.tm_year - 100);

	/* update all the alarm registers in one shot */
	ret = regmap_bulk_write(tps->regmap, TPS65910_ALARM_SECONDS,
		alarm_data, NUM_TIME_REGS);
	if (ret) {
		dev_err(dev, "rtc_set_alarm error %d\n", ret);
		return ret;
	}

	if (alm->enabled)
		ret = tps65910_rtc_alarm_irq_enable(dev, 1);

	return ret;
}

static irqreturn_t tps65910_rtc_interrupt(int irq, void *rtc)
{
	struct device *dev = rtc;
	unsigned long events = 0;
	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
	int ret;
	u32 rtc_reg;

	ret = regmap_read(tps->regmap, TPS65910_RTC_STATUS, &rtc_reg);
	if (ret)
		return IRQ_NONE;

	if (rtc_reg & TPS65910_RTC_STATUS_ALARM)
		events = RTC_IRQF | RTC_AF;

	ret = regmap_write(tps->regmap, TPS65910_RTC_STATUS, rtc_reg);
	if (ret)
		return IRQ_NONE;

	/* Notify RTC core on event */
	rtc_update_irq(tps_rtc->rtc, 1, events);

	return IRQ_HANDLED;
}

static const struct rtc_class_ops tps65910_rtc_ops = {
	.read_time	= tps65910_rtc_read_time,
	.set_time	= tps65910_rtc_set_time,
	.read_alarm	= tps65910_rtc_read_alarm,
	.set_alarm	= tps65910_rtc_set_alarm,
	.alarm_irq_enable = tps65910_rtc_alarm_irq_enable,
};

static int tps65910_rtc_probe(struct platform_device *pdev)
{
	struct tps65910 *tps65910 = NULL;
	struct tps65910_rtc *tps_rtc = NULL;
	int ret;
	int irq;
	u32 rtc_reg;

	tps65910 = dev_get_drvdata(pdev->dev.parent);

	tps_rtc = devm_kzalloc(&pdev->dev, sizeof(struct tps65910_rtc),
			GFP_KERNEL);
	if (!tps_rtc)
		return -ENOMEM;

	/* Clear pending interrupts */
	ret = regmap_read(tps65910->regmap, TPS65910_RTC_STATUS, &rtc_reg);
	if (ret < 0)
		return ret;

	ret = regmap_write(tps65910->regmap, TPS65910_RTC_STATUS, rtc_reg);
	if (ret < 0)
		return ret;

	dev_dbg(&pdev->dev, "Enabling rtc-tps65910.\n");

	/* Enable RTC digital power domain */
	ret = regmap_update_bits(tps65910->regmap, TPS65910_DEVCTRL,
		DEVCTRL_RTC_PWDN_MASK, 0 << DEVCTRL_RTC_PWDN_SHIFT);
	if (ret < 0)
		return ret;

	rtc_reg = TPS65910_RTC_CTRL_STOP_RTC;
	ret = regmap_write(tps65910->regmap, TPS65910_RTC_CTRL, rtc_reg);
	if (ret < 0)
		return ret;

	irq  = platform_get_irq(pdev, 0);
	if (irq <= 0) {
		dev_warn(&pdev->dev, "Wake up is not possible as irq = %d\n",
			irq);
		return -ENXIO;
	}

	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
		tps65910_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_EARLY_RESUME,
		dev_name(&pdev->dev), &pdev->dev);
	if (ret < 0) {
		dev_err(&pdev->dev, "IRQ is not free.\n");
		return ret;
	}
	tps_rtc->irq = irq;
	device_set_wakeup_capable(&pdev->dev, 1);

	tps_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
		&tps65910_rtc_ops, THIS_MODULE);
	if (IS_ERR(tps_rtc->rtc)) {
		ret = PTR_ERR(tps_rtc->rtc);
		dev_err(&pdev->dev, "RTC device register: err %d\n", ret);
		return ret;
	}

	platform_set_drvdata(pdev, tps_rtc);

	return 0;
}

/*
 * Disable tps65910 RTC interrupts.
 * Sets status flag to free.
 */
static int tps65910_rtc_remove(struct platform_device *pdev)
{
	tps65910_rtc_alarm_irq_enable(&pdev->dev, 0);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int tps65910_rtc_suspend(struct device *dev)
{
	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);

	if (device_may_wakeup(dev))
		enable_irq_wake(tps_rtc->irq);
	return 0;
}

static int tps65910_rtc_resume(struct device *dev)
{
	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);

	if (device_may_wakeup(dev))
		disable_irq_wake(tps_rtc->irq);
	return 0;
}
#endif

static SIMPLE_DEV_PM_OPS(tps65910_rtc_pm_ops, tps65910_rtc_suspend,
			tps65910_rtc_resume);

static struct platform_driver tps65910_rtc_driver = {
	.probe		= tps65910_rtc_probe,
	.remove		= tps65910_rtc_remove,
	.driver		= {
		.owner	= THIS_MODULE,
		.name	= "tps65910-rtc",
		.pm	= &tps65910_rtc_pm_ops,
	},
};

module_platform_driver(tps65910_rtc_driver);
MODULE_ALIAS("platform:rtc-tps65910");
MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
0e783980 VB	1	/*
	2	* rtc-tps65910.c -- TPS65910 Real Time Clock interface
	3	*
	4	* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
	5	* Author: Venu Byravarasu <vbyravarasu@nvidia.com>
	6	*
	7	* Based on original TI driver rtc-twl.c
	8	* Copyright (C) 2007 MontaVista Software, Inc
	9	* Author: Alexandre Rusev <source@mvista.com>
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License
	13	* as published by the Free Software Foundation; either version
	14	* 2 of the License, or (at your option) any later version.
	15	*/
	16
	17	#include <linux/kernel.h>
	18	#include <linux/errno.h>
	19	#include <linux/init.h>
	20	#include <linux/module.h>
	21	#include <linux/types.h>
	22	#include <linux/rtc.h>
	23	#include <linux/bcd.h>
	24	#include <linux/platform_device.h>
176a9f20	25	#include <linux/pm_runtime.h>
0e783980 VB	26	#include <linux/interrupt.h>
	27	#include <linux/mfd/tps65910.h>
	28
	29	struct tps65910_rtc {
	30	struct rtc_device *rtc;
eb5eba4e	31	int irq;
0e783980 VB	32	};
	33
	34	/* Total number of RTC registers needed to set time*/
	35	#define NUM_TIME_REGS (TPS65910_YEARS - TPS65910_SECONDS + 1)
	36
	37	static int tps65910_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
	38	{
	39	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	40	u8 val = 0;
	41
	42	if (enabled)
	43	val = TPS65910_RTC_INTERRUPTS_IT_ALARM;
	44
	45	return regmap_write(tps->regmap, TPS65910_RTC_INTERRUPTS, val);
	46	}
	47
	48	/*
	49	* Gets current tps65910 RTC time and date parameters.
	50	*
	51	* The RTC's time/alarm representation is not what gmtime(3) requires
	52	* Linux to use:
	53	*
	54	* - Months are 1..12 vs Linux 0-11
	55	* - Years are 0..99 vs Linux 1900..N (we assume 21st century)
	56	*/
	57	static int tps65910_rtc_read_time(struct device dev, struct rtc_time tm)
	58	{
	59	unsigned char rtc_data[NUM_TIME_REGS];
	60	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	61	int ret;
	62
	63	/* Copy RTC counting registers to static registers or latches */
	64	ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL,
	65	TPS65910_RTC_CTRL_GET_TIME, TPS65910_RTC_CTRL_GET_TIME);
	66	if (ret < 0) {
	67	dev_err(dev, "RTC CTRL reg update failed with err:%d\n", ret);
	68	return ret;
	69	}
	70
	71	ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, rtc_data,
	72	NUM_TIME_REGS);
	73	if (ret < 0) {
	74	dev_err(dev, "reading from RTC failed with err:%d\n", ret);
	75	return ret;
	76	}
	77
	78	tm->tm_sec = bcd2bin(rtc_data[0]);
	79	tm->tm_min = bcd2bin(rtc_data[1]);
	80	tm->tm_hour = bcd2bin(rtc_data[2]);
	81	tm->tm_mday = bcd2bin(rtc_data[3]);
	82	tm->tm_mon = bcd2bin(rtc_data[4]) - 1;
	83	tm->tm_year = bcd2bin(rtc_data[5]) + 100;
	84
	85	return ret;
	86	}
	87
	88	static int tps65910_rtc_set_time(struct device dev, struct rtc_time tm)
	89	{
	90	unsigned char rtc_data[NUM_TIME_REGS];
	91	struct tps65910 *tps = dev_get_drvdata(dev->parent);
	92	int ret;
	93
	94	rtc_data[0] = bin2bcd(tm->tm_sec);
	95	rtc_data[1] = bin2bcd(tm->tm_min);
96	rtc_data[2] = bin2bcd(tm->tm_hour);
97	rtc_data[3] = bin2bcd(tm->tm_mday);
98	rtc_data[4] = bin2bcd(tm->tm_mon + 1);
99	rtc_data[5] = bin2bcd(tm->tm_year - 100);
100
101	/* Stop RTC while updating the RTC time registers */
102	ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL,
103	TPS65910_RTC_CTRL_STOP_RTC, 0);
104	if (ret < 0) {
105	dev_err(dev, "RTC stop failed with err:%d\n", ret);
106	return ret;
107	}
108
109	/* update all the time registers in one shot */
110	ret = regmap_bulk_write(tps->regmap, TPS65910_SECONDS, rtc_data,
111	NUM_TIME_REGS);
112	if (ret < 0) {
113	dev_err(dev, "rtc_set_time error %d\n", ret);
114	return ret;
115	}
116
117	/* Start back RTC */
118	ret = regmap_update_bits(tps->regmap, TPS65910_RTC_CTRL,
119	TPS65910_RTC_CTRL_STOP_RTC, 1);
120	if (ret < 0)
121	dev_err(dev, "RTC start failed with err:%d\n", ret);
122
123	return ret;
124	}
125
126	/*
127	* Gets current tps65910 RTC alarm time.
128	*/
129	static int tps65910_rtc_read_alarm(struct device dev, struct rtc_wkalrm alm)
130	{
131	unsigned char alarm_data[NUM_TIME_REGS];
132	u32 int_val;
133	struct tps65910 *tps = dev_get_drvdata(dev->parent);
134	int ret;
135
136	ret = regmap_bulk_read(tps->regmap, TPS65910_SECONDS, alarm_data,
137	NUM_TIME_REGS);
138	if (ret < 0) {
139	dev_err(dev, "rtc_read_alarm error %d\n", ret);
140	return ret;
141	}
142
143	alm->time.tm_sec = bcd2bin(alarm_data[0]);
144	alm->time.tm_min = bcd2bin(alarm_data[1]);
145	alm->time.tm_hour = bcd2bin(alarm_data[2]);
146	alm->time.tm_mday = bcd2bin(alarm_data[3]);
147	alm->time.tm_mon = bcd2bin(alarm_data[4]) - 1;
148	alm->time.tm_year = bcd2bin(alarm_data[5]) + 100;
149
150	ret = regmap_read(tps->regmap, TPS65910_RTC_INTERRUPTS, &int_val);
151	if (ret < 0)
152	return ret;
153
154	if (int_val & TPS65910_RTC_INTERRUPTS_IT_ALARM)
155	alm->enabled = 1;
156
157	return ret;
158	}
159
160	static int tps65910_rtc_set_alarm(struct device dev, struct rtc_wkalrm alm)
161	{
162	unsigned char alarm_data[NUM_TIME_REGS];
163	struct tps65910 *tps = dev_get_drvdata(dev->parent);
164	int ret;
165
166	ret = tps65910_rtc_alarm_irq_enable(dev, 0);
167	if (ret)
168	return ret;
169
170	alarm_data[0] = bin2bcd(alm->time.tm_sec);
171	alarm_data[1] = bin2bcd(alm->time.tm_min);
172	alarm_data[2] = bin2bcd(alm->time.tm_hour);
173	alarm_data[3] = bin2bcd(alm->time.tm_mday);
174	alarm_data[4] = bin2bcd(alm->time.tm_mon + 1);
175	alarm_data[5] = bin2bcd(alm->time.tm_year - 100);
176
177	/* update all the alarm registers in one shot */
178	ret = regmap_bulk_write(tps->regmap, TPS65910_ALARM_SECONDS,
179	alarm_data, NUM_TIME_REGS);
180	if (ret) {
181	dev_err(dev, "rtc_set_alarm error %d\n", ret);
182	return ret;
183	}
184
185	if (alm->enabled)
186	ret = tps65910_rtc_alarm_irq_enable(dev, 1);
187
188	return ret;
189	}
190
191	static irqreturn_t tps65910_rtc_interrupt(int irq, void *rtc)
192	{
193	struct device *dev = rtc;
194	unsigned long events = 0;
195	struct tps65910 *tps = dev_get_drvdata(dev->parent);
196	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
197	int ret;
198	u32 rtc_reg;
199
200	ret = regmap_read(tps->regmap, TPS65910_RTC_STATUS, &rtc_reg);
201	if (ret)
202	return IRQ_NONE;
203
204	if (rtc_reg & TPS65910_RTC_STATUS_ALARM)
205	events = RTC_IRQF \| RTC_AF;
206
207	ret = regmap_write(tps->regmap, TPS65910_RTC_STATUS, rtc_reg);
208	if (ret)
209	return IRQ_NONE;
210
211	/* Notify RTC core on event */
212	rtc_update_irq(tps_rtc->rtc, 1, events);
213
214	return IRQ_HANDLED;
215	}
216
217	static const struct rtc_class_ops tps65910_rtc_ops = {
218	.read_time = tps65910_rtc_read_time,
219	.set_time = tps65910_rtc_set_time,
220	.read_alarm = tps65910_rtc_read_alarm,
221	.set_alarm = tps65910_rtc_set_alarm,
222	.alarm_irq_enable = tps65910_rtc_alarm_irq_enable,
223	};
224
5a167f45	225	static int tps65910_rtc_probe(struct platform_device *pdev)
0e783980 VB	226	{
	227	struct tps65910 *tps65910 = NULL;
	228	struct tps65910_rtc *tps_rtc = NULL;
0e783980 VB	229	int ret;
	230	int irq;
	231	u32 rtc_reg;
	232
	233	tps65910 = dev_get_drvdata(pdev->dev.parent);
	234
	235	tps_rtc = devm_kzalloc(&pdev->dev, sizeof(struct tps65910_rtc),
	236	GFP_KERNEL);
	237	if (!tps_rtc)
	238	return -ENOMEM;
	239
	240	/* Clear pending interrupts */
	241	ret = regmap_read(tps65910->regmap, TPS65910_RTC_STATUS, &rtc_reg);
	242	if (ret < 0)
	243	return ret;
	244
	245	ret = regmap_write(tps65910->regmap, TPS65910_RTC_STATUS, rtc_reg);
	246	if (ret < 0)
	247	return ret;
	248
	249	dev_dbg(&pdev->dev, "Enabling rtc-tps65910.\n");
18c701a9 KM	250
	251	/* Enable RTC digital power domain */
	252	ret = regmap_update_bits(tps65910->regmap, TPS65910_DEVCTRL,
	253	DEVCTRL_RTC_PWDN_MASK, 0 << DEVCTRL_RTC_PWDN_SHIFT);
	254	if (ret < 0)
	255	return ret;
	256
0e783980 VB	257	rtc_reg = TPS65910_RTC_CTRL_STOP_RTC;
	258	ret = regmap_write(tps65910->regmap, TPS65910_RTC_CTRL, rtc_reg);
	259	if (ret < 0)
	260	return ret;
	261
06f77d18	262	irq = platform_get_irq(pdev, 0);
0e783980 VB	263	if (irq <= 0) {
	264	dev_warn(&pdev->dev, "Wake up is not possible as irq = %d\n",
	265	irq);
dbda161b	266	return -ENXIO;
0e783980 VB	267	}
0e783980 VB	268
0e783980	269	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
225ccc28	270	tps65910_rtc_interrupt, IRQF_TRIGGER_LOW \| IRQF_EARLY_RESUME,
32c4746c	271	dev_name(&pdev->dev), &pdev->dev);
0e783980 VB	272	if (ret < 0) {
	273	dev_err(&pdev->dev, "IRQ is not free.\n");
	274	return ret;
	275	}
eb5eba4e LD	276	tps_rtc->irq = irq;
eb5eba4e LD	277	device_set_wakeup_capable(&pdev->dev, 1);
0e783980	278
97868b32	279	tps_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
0e783980 VB	280	&tps65910_rtc_ops, THIS_MODULE);
	281	if (IS_ERR(tps_rtc->rtc)) {
	282	ret = PTR_ERR(tps_rtc->rtc);
	283	dev_err(&pdev->dev, "RTC device register: err %d\n", ret);
	284	return ret;
	285	}
	286
	287	platform_set_drvdata(pdev, tps_rtc);
	288
	289	return 0;
	290	}
	291
	292	/*
	293	* Disable tps65910 RTC interrupts.
	294	* Sets status flag to free.
	295	*/
5a167f45	296	static int tps65910_rtc_remove(struct platform_device *pdev)
0e783980	297	{
1430e178	298	tps65910_rtc_alarm_irq_enable(&pdev->dev, 0);
0e783980	299
0e783980 VB	300	return 0;
	301	}
	302
	303	#ifdef CONFIG_PM_SLEEP
0e783980 VB	304	static int tps65910_rtc_suspend(struct device *dev)
0e783980 VB	305	{
eb5eba4e	306	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
0e783980	307
eb5eba4e LD	308	if (device_may_wakeup(dev))
eb5eba4e LD	309	enable_irq_wake(tps_rtc->irq);
dfaf09ac	310	return 0;
0e783980 VB	311	}
	312
	313	static int tps65910_rtc_resume(struct device *dev)
	314	{
eb5eba4e LD	315	struct tps65910_rtc *tps_rtc = dev_get_drvdata(dev);
	316
	317	if (device_may_wakeup(dev))
	318	disable_irq_wake(tps_rtc->irq);
dfaf09ac	319	return 0;
0e783980	320	}
176a9f20	321	#endif
0e783980	322
e4ae909b JH	323	static SIMPLE_DEV_PM_OPS(tps65910_rtc_pm_ops, tps65910_rtc_suspend,
e4ae909b JH	324	tps65910_rtc_resume);
0e783980	325
0e783980 VB	326	static struct platform_driver tps65910_rtc_driver = {
0e783980 VB	327	.probe = tps65910_rtc_probe,
5a167f45	328	.remove = tps65910_rtc_remove,
0e783980 VB	329	.driver = {
	330	.owner = THIS_MODULE,
	331	.name = "tps65910-rtc",
176a9f20	332	.pm = &tps65910_rtc_pm_ops,
0e783980 VB	333	},
	334	};
	335
	336	module_platform_driver(tps65910_rtc_driver);
	337	MODULE_ALIAS("platform:rtc-tps65910");
	338	MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
	339	MODULE_LICENSE("GPL");