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    Subject[PATCH v6 22/23] rtc: Add driver for Maxim 77802 PMIC Real-Time-Clock
    Date
    The MAX7802 PMIC has a Real-Time-Clock (RTC) with two alarms.
    This patch adds support for the RTC and is based on a driver
    added by Simon Glass to the Chrome OS kernel 3.8 tree.

    Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
    ---

    Changes since v5: None

    Changes since v4: None

    Changes since v3: None
    ---
    drivers/rtc/Kconfig | 10 +
    drivers/rtc/Makefile | 1 +
    drivers/rtc/rtc-max77802.c | 637 +++++++++++++++++++++++++++++++++++++++++++++
    3 files changed, 648 insertions(+)
    create mode 100644 drivers/rtc/rtc-max77802.c

    diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
    index a672dd1..243ac72 100644
    --- a/drivers/rtc/Kconfig
    +++ b/drivers/rtc/Kconfig
    @@ -288,6 +288,16 @@ config RTC_DRV_MAX77686
    This driver can also be built as a module. If so, the module
    will be called rtc-max77686.

    +config RTC_DRV_MAX77802
    + tristate "Maxim 77802 RTC"
    + depends on MFD_MAX77686
    + help
    + If you say yes here you will get support for the
    + RTC of Maxim MAX77802 PMIC.
    +
    + This driver can also be built as a module. If so, the module
    + will be called rtc-max77802.
    +
    config RTC_DRV_RS5C372
    tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
    help
    diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
    index 70347d0..247de78 100644
    --- a/drivers/rtc/Makefile
    +++ b/drivers/rtc/Makefile
    @@ -81,6 +81,7 @@ obj-$(CONFIG_RTC_DRV_MAX8998) += rtc-max8998.o
    obj-$(CONFIG_RTC_DRV_MAX8997) += rtc-max8997.o
    obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o
    obj-$(CONFIG_RTC_DRV_MAX77686) += rtc-max77686.o
    +obj-$(CONFIG_RTC_DRV_MAX77802) += rtc-max77802.o
    obj-$(CONFIG_RTC_DRV_MC13XXX) += rtc-mc13xxx.o
    obj-$(CONFIG_RTC_DRV_MCP795) += rtc-mcp795.o
    obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o
    diff --git a/drivers/rtc/rtc-max77802.c b/drivers/rtc/rtc-max77802.c
    new file mode 100644
    index 0000000..2f4fc2e
    --- /dev/null
    +++ b/drivers/rtc/rtc-max77802.c
    @@ -0,0 +1,637 @@
    +/*
    + * RTC driver for Maxim MAX77802
    + *
    + * Copyright (C) 2013 Google, Inc
    + *
    + * Copyright (C) 2012 Samsung Electronics Co.Ltd
    + *
    + * based on rtc-max8997.c
    + *
    + * 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/slab.h>
    +#include <linux/rtc.h>
    +#include <linux/delay.h>
    +#include <linux/mutex.h>
    +#include <linux/module.h>
    +#include <linux/platform_device.h>
    +#include <linux/mfd/max77686-private.h>
    +#include <linux/irqdomain.h>
    +#include <linux/regmap.h>
    +
    +/* RTC Control Register */
    +#define BCD_EN_SHIFT 0
    +#define BCD_EN_MASK (1 << BCD_EN_SHIFT)
    +#define MODEL24_SHIFT 1
    +#define MODEL24_MASK (1 << MODEL24_SHIFT)
    +/* RTC Update Register1 */
    +#define RTC_UDR_SHIFT 0
    +#define RTC_UDR_MASK (1 << RTC_UDR_SHIFT)
    +#define RTC_RBUDR_SHIFT 4
    +#define RTC_RBUDR_MASK (1 << RTC_RBUDR_SHIFT)
    +/* WTSR and SMPL Register */
    +#define WTSRT_SHIFT 0
    +#define SMPLT_SHIFT 2
    +#define WTSR_EN_SHIFT 6
    +#define SMPL_EN_SHIFT 7
    +#define WTSRT_MASK (3 << WTSRT_SHIFT)
    +#define SMPLT_MASK (3 << SMPLT_SHIFT)
    +#define WTSR_EN_MASK (1 << WTSR_EN_SHIFT)
    +#define SMPL_EN_MASK (1 << SMPL_EN_SHIFT)
    +/* RTC Hour register */
    +#define HOUR_PM_SHIFT 6
    +#define HOUR_PM_MASK (1 << HOUR_PM_SHIFT)
    +/* RTC Alarm Enable */
    +#define ALARM_ENABLE_SHIFT 7
    +#define ALARM_ENABLE_MASK (1 << ALARM_ENABLE_SHIFT)
    +
    +/* For the RTCAE1 register, we write this value to enable the alarm */
    +#define ALARM_ENABLE_VALUE 0x77
    +
    +#define MAX77802_RTC_UPDATE_DELAY_US 200
    +#undef MAX77802_RTC_WTSR_SMPL
    +
    +enum {
    + RTC_SEC = 0,
    + RTC_MIN,
    + RTC_HOUR,
    + RTC_WEEKDAY,
    + RTC_MONTH,
    + RTC_YEAR,
    + RTC_DATE,
    + RTC_NR_TIME
    +};
    +
    +struct max77802_rtc_info {
    + struct device *dev;
    + struct max77686_dev *max77802;
    + struct i2c_client *rtc;
    + struct rtc_device *rtc_dev;
    + struct mutex lock;
    +
    + struct regmap *regmap;
    +
    + int virq;
    + int rtc_24hr_mode;
    +};
    +
    +enum MAX77802_RTC_OP {
    + MAX77802_RTC_WRITE,
    + MAX77802_RTC_READ,
    +};
    +
    +static inline int max77802_rtc_calculate_wday(u8 shifted)
    +{
    + int counter = -1;
    +
    + while (shifted) {
    + shifted >>= 1;
    + counter++;
    + }
    +
    + return counter;
    +}
    +
    +static void max77802_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
    + int rtc_24hr_mode)
    +{
    + tm->tm_sec = data[RTC_SEC] & 0xff;
    + tm->tm_min = data[RTC_MIN] & 0xff;
    + if (rtc_24hr_mode)
    + tm->tm_hour = data[RTC_HOUR] & 0x1f;
    + else {
    + tm->tm_hour = data[RTC_HOUR] & 0x0f;
    + if (data[RTC_HOUR] & HOUR_PM_MASK)
    + tm->tm_hour += 12;
    + }
    +
    + tm->tm_wday = max77802_rtc_calculate_wday(data[RTC_WEEKDAY] & 0xff);
    + tm->tm_mday = data[RTC_DATE] & 0x1f;
    + tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;
    +
    + tm->tm_year = data[RTC_YEAR] & 0xff;
    + tm->tm_yday = 0;
    + tm->tm_isdst = 0;
    +}
    +
    +static int max77802_rtc_tm_to_data(struct rtc_time *tm, u8 *data)
    +{
    + data[RTC_SEC] = tm->tm_sec;
    + data[RTC_MIN] = tm->tm_min;
    + data[RTC_HOUR] = tm->tm_hour;
    + data[RTC_WEEKDAY] = 1 << tm->tm_wday;
    + data[RTC_DATE] = tm->tm_mday;
    + data[RTC_MONTH] = tm->tm_mon + 1;
    + data[RTC_YEAR] = tm->tm_year;
    +
    + return 0;
    +}
    +
    +static int max77802_rtc_update(struct max77802_rtc_info *info,
    + enum MAX77802_RTC_OP op)
    +{
    + int ret;
    + unsigned int data;
    +
    + if (op == MAX77802_RTC_WRITE)
    + data = 1 << RTC_UDR_SHIFT;
    + else
    + data = 1 << RTC_RBUDR_SHIFT;
    +
    + ret = regmap_update_bits(info->max77802->regmap,
    + MAX77802_RTC_UPDATE0, data, data);
    + if (ret < 0)
    + dev_err(info->dev, "%s: fail to write update reg(ret=%d, data=0x%x)\n",
    + __func__, ret, data);
    + else {
    + /* Minimum delay required before RTC update. */
    + usleep_range(MAX77802_RTC_UPDATE_DELAY_US,
    + MAX77802_RTC_UPDATE_DELAY_US * 2);
    + }
    +
    + return ret;
    +}
    +
    +static int max77802_rtc_read_time(struct device *dev, struct rtc_time *tm)
    +{
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    + u8 data[RTC_NR_TIME];
    + int ret;
    +
    + mutex_lock(&info->lock);
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_READ);
    + if (ret < 0)
    + goto out;
    +
    + ret = regmap_bulk_read(info->max77802->regmap,
    + MAX77802_RTC_SEC, data, RTC_NR_TIME);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to read time reg(%d)\n", __func__,
    + ret);
    + goto out;
    + }
    +
    + max77802_rtc_data_to_tm(data, tm, info->rtc_24hr_mode);
    +
    + ret = rtc_valid_tm(tm);
    +
    +out:
    + mutex_unlock(&info->lock);
    + return ret;
    +}
    +
    +static int max77802_rtc_set_time(struct device *dev, struct rtc_time *tm)
    +{
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    + u8 data[RTC_NR_TIME];
    + int ret;
    +
    + ret = max77802_rtc_tm_to_data(tm, data);
    + if (ret < 0)
    + return ret;
    +
    + mutex_lock(&info->lock);
    +
    + ret = regmap_bulk_write(info->max77802->regmap,
    + MAX77802_RTC_SEC, data, RTC_NR_TIME);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to write time reg(%d)\n", __func__,
    + ret);
    + goto out;
    + }
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +
    +out:
    + mutex_unlock(&info->lock);
    + return ret;
    +}
    +
    +static int max77802_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
    +{
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    + u8 data[RTC_NR_TIME];
    + unsigned int val;
    + int ret;
    +
    + mutex_lock(&info->lock);
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_READ);
    + if (ret < 0)
    + goto out;
    +
    + ret = regmap_bulk_read(info->max77802->regmap,
    + MAX77802_ALARM1_SEC, data, RTC_NR_TIME);
    + if (ret < 0) {
    + dev_err(info->dev, "%s:%d fail to read alarm reg(%d)\n",
    + __func__, __LINE__, ret);
    + goto out;
    + }
    +
    + max77802_rtc_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
    +
    + alrm->enabled = 0;
    + ret = regmap_read(info->max77802->regmap,
    + MAX77802_RTC_AE1, &val);
    + if (ret < 0) {
    + dev_err(info->dev, "%s:%d fail to read alarm enable(%d)\n",
    + __func__, __LINE__, ret);
    + goto out;
    + }
    + if (val)
    + alrm->enabled = 1;
    +
    + alrm->pending = 0;
    + ret = regmap_read(info->max77802->regmap, MAX77802_REG_STATUS2, &val);
    + if (ret < 0) {
    + dev_err(info->dev, "%s:%d fail to read status2 reg(%d)\n",
    + __func__, __LINE__, ret);
    + goto out;
    + }
    +
    + if (val & (1 << 2)) /* RTCA1 */
    + alrm->pending = 1;
    +
    +out:
    + mutex_unlock(&info->lock);
    + return 0;
    +}
    +
    +static int max77802_rtc_stop_alarm(struct max77802_rtc_info *info)
    +{
    + int ret;
    +
    + if (!mutex_is_locked(&info->lock))
    + dev_warn(info->dev, "%s: should have mutex locked\n", __func__);
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_READ);
    + if (ret < 0)
    + goto out;
    +
    + ret = regmap_write(info->max77802->regmap,
    + MAX77802_RTC_AE1, 0);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
    + __func__, ret);
    + goto out;
    + }
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +out:
    + return ret;
    +}
    +
    +static int max77802_rtc_start_alarm(struct max77802_rtc_info *info)
    +{
    + int ret;
    +
    + if (!mutex_is_locked(&info->lock))
    + dev_warn(info->dev, "%s: should have mutex locked\n",
    + __func__);
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_READ);
    + if (ret < 0)
    + goto out;
    +
    + ret = regmap_write(info->max77802->regmap,
    + MAX77802_RTC_AE1,
    + ALARM_ENABLE_VALUE);
    +
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
    + __func__, ret);
    + goto out;
    + }
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +out:
    + return ret;
    +}
    +
    +static int max77802_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
    +{
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    + u8 data[RTC_NR_TIME];
    + int ret;
    +
    + ret = max77802_rtc_tm_to_data(&alrm->time, data);
    + if (ret < 0)
    + return ret;
    +
    + mutex_lock(&info->lock);
    +
    + ret = max77802_rtc_stop_alarm(info);
    + if (ret < 0)
    + goto out;
    +
    + ret = regmap_bulk_write(info->max77802->regmap,
    + MAX77802_ALARM1_SEC, data, RTC_NR_TIME);
    +
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
    + __func__, ret);
    + goto out;
    + }
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_WRITE);
    + if (ret < 0)
    + goto out;
    +
    + if (alrm->enabled)
    + ret = max77802_rtc_start_alarm(info);
    +out:
    + mutex_unlock(&info->lock);
    + return ret;
    +}
    +
    +static int max77802_rtc_alarm_irq_enable(struct device *dev,
    + unsigned int enabled)
    +{
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    + int ret;
    +
    + mutex_lock(&info->lock);
    + if (enabled)
    + ret = max77802_rtc_start_alarm(info);
    + else
    + ret = max77802_rtc_stop_alarm(info);
    + mutex_unlock(&info->lock);
    +
    + return ret;
    +}
    +
    +static irqreturn_t max77802_rtc_alarm_irq(int irq, void *data)
    +{
    + struct max77802_rtc_info *info = data;
    +
    + dev_info(info->dev, "%s:irq(%d)\n", __func__, irq);
    +
    + rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF);
    +
    + return IRQ_HANDLED;
    +}
    +
    +static const struct rtc_class_ops max77802_rtc_ops = {
    + .read_time = max77802_rtc_read_time,
    + .set_time = max77802_rtc_set_time,
    + .read_alarm = max77802_rtc_read_alarm,
    + .set_alarm = max77802_rtc_set_alarm,
    + .alarm_irq_enable = max77802_rtc_alarm_irq_enable,
    +};
    +
    +#ifdef MAX77802_RTC_WTSR_SMPL
    +static void max77802_rtc_enable_wtsr(struct max77802_rtc_info *info, bool enable)
    +{
    + int ret;
    + unsigned int val, mask;
    +
    + if (enable)
    + val = (1 << WTSR_EN_SHIFT) | (3 << WTSRT_SHIFT);
    + else
    + val = 0;
    +
    + mask = WTSR_EN_MASK | WTSRT_MASK;
    +
    + dev_info(info->dev, "%s: %s WTSR\n", __func__,
    + enable ? "enable" : "disable");
    +
    + ret = regmap_update_bits(info->max77802->regmap,
    + MAX77802_WTSR_SMPL_CNTL, mask, val);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
    + __func__, ret);
    + return;
    + }
    +
    + max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +}
    +
    +static void max77802_rtc_enable_smpl(struct max77802_rtc_info *info, bool enable)
    +{
    + int ret;
    + unsigned int val, mask;
    +
    + if (enable)
    + val = (1 << SMPL_EN_SHIFT) | (0 << SMPLT_SHIFT);
    + else
    + val = 0;
    +
    + mask = SMPL_EN_MASK | SMPLT_MASK;
    +
    + dev_info(info->dev, "%s: %s SMPL\n", __func__,
    + enable ? "enable" : "disable");
    +
    + ret = regmap_update_bits(info->max77802->regmap,
    + MAX77802_WTSR_SMPL_CNTL, mask, val);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
    + __func__, ret);
    + return;
    + }
    +
    + max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +
    + val = 0;
    + regmap_read(info->max77802->regmap, MAX77802_WTSR_SMPL_CNTL, &val);
    + dev_info(info->dev, "%s: WTSR_SMPL(0x%02x)\n", __func__, val);
    +}
    +#endif /* MAX77802_RTC_WTSR_SMPL */
    +
    +static int max77802_rtc_init_reg(struct max77802_rtc_info *info)
    +{
    + u8 data[2];
    + int ret;
    +
    + max77802_rtc_update(info, MAX77802_RTC_READ);
    +
    + /* Set RTC control register : Binary mode, 24hour mdoe */
    + data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
    + data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
    +
    + info->rtc_24hr_mode = 1;
    +
    + ret = regmap_bulk_write(info->max77802->regmap,
    + MAX77802_RTC_CONTROLM, data, 2);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
    + __func__, ret);
    + return ret;
    + }
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +
    + /* Mask control register */
    + max77802_rtc_update(info, MAX77802_RTC_READ);
    +
    + ret = regmap_update_bits(info->max77802->regmap,
    + MAX77802_RTC_CONTROLM, 0x0, 0x3);
    + if (ret < 0) {
    + dev_err(info->dev, "%s: fail to mask CONTROLM reg(%d)\n",
    + __func__, ret);
    + return ret;
    + }
    +
    + ret = max77802_rtc_update(info, MAX77802_RTC_WRITE);
    +
    + return ret;
    +}
    +
    +static int max77802_rtc_probe(struct platform_device *pdev)
    +{
    + struct max77686_dev *max77802 = dev_get_drvdata(pdev->dev.parent);
    + struct max77802_rtc_info *info;
    + int ret;
    +
    + dev_info(&pdev->dev, "%s\n", __func__);
    +
    + info = devm_kzalloc(&pdev->dev, sizeof(struct max77802_rtc_info),
    + GFP_KERNEL);
    + if (!info)
    + return -ENOMEM;
    +
    + mutex_init(&info->lock);
    + info->dev = &pdev->dev;
    + info->max77802 = max77802;
    + info->rtc = max77802->i2c;
    +
    + platform_set_drvdata(pdev, info);
    +
    + ret = max77802_rtc_init_reg(info);
    +
    + if (ret < 0) {
    + dev_err(&pdev->dev, "Failed to initialize RTC reg:%d\n", ret);
    + return ret;
    + }
    +
    +#ifdef MAX77802_RTC_WTSR_SMPL
    + max77802_rtc_enable_wtsr(info, true);
    + max77802_rtc_enable_smpl(info, true);
    +#endif
    +
    + device_init_wakeup(&pdev->dev, 1);
    +
    + info->rtc_dev = devm_rtc_device_register(&pdev->dev, "max77802-rtc",
    + &max77802_rtc_ops, THIS_MODULE);
    +
    + if (IS_ERR(info->rtc_dev)) {
    + dev_info(&pdev->dev, "%s: fail\n", __func__);
    +
    + ret = PTR_ERR(info->rtc_dev);
    + dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
    + if (ret == 0)
    + ret = -EINVAL;
    + return ret;
    + }
    + info->virq = regmap_irq_get_virq(max77802->rtc_irq_data,
    + MAX77686_RTCIRQ_RTCA1);
    +
    + if (info->virq <= 0) {
    + dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n",
    + MAX77686_RTCIRQ_RTCA1);
    + ret = -EINVAL;
    + return ret;
    + }
    +
    + ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL,
    + max77802_rtc_alarm_irq, 0, "rtc-alarm1",
    + info);
    + if (ret < 0)
    + dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
    + info->virq, ret);
    +
    + return ret;
    +}
    +
    +static int max77802_rtc_remove(struct platform_device *pdev)
    +{
    + struct max77802_rtc_info *info = platform_get_drvdata(pdev);
    +
    + free_irq(info->virq, info);
    + rtc_device_unregister(info->rtc_dev);
    +
    + return 0;
    +}
    +
    +static void max77802_rtc_shutdown(struct platform_device *pdev)
    +{
    +#ifdef MAX77802_RTC_WTSR_SMPL
    + struct max77802_rtc_info *info = platform_get_drvdata(pdev);
    + int i;
    + u8 val = 0;
    +
    + for (i = 0; i < 3; i++) {
    + max77802_rtc_enable_wtsr(info, false);
    + regmap_read(info->max77802->regmap,
    + MAX77802_WTSR_SMPL_CNTL, &val);
    + dev_info(info->dev, "%s: WTSR_SMPL reg(0x%02x)\n", __func__,
    + val);
    + if (val & WTSR_EN_MASK) {
    + dev_emerg(info->dev, "%s: fail to disable WTSR\n",
    + __func__);
    + } else {
    + dev_info(info->dev, "%s: success to disable WTSR\n",
    + __func__);
    + break;
    + }
    + }
    +
    + /* Disable SMPL when power off */
    + max77802_rtc_enable_smpl(info, false);
    +#endif /* MAX77802_RTC_WTSR_SMPL */
    +}
    +
    +#ifdef CONFIG_PM_SLEEP
    +static int max77802_rtc_suspend(struct device *dev)
    +{
    + if (device_may_wakeup(dev)) {
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    +
    + return enable_irq_wake(info->virq);
    + }
    +
    + return 0;
    +}
    +
    +static int max77802_rtc_resume(struct device *dev)
    +{
    + if (device_may_wakeup(dev)) {
    + struct max77802_rtc_info *info = dev_get_drvdata(dev);
    +
    + return disable_irq_wake(info->virq);
    + }
    +
    + return 0;
    +}
    +#endif
    +
    +static SIMPLE_DEV_PM_OPS(max77802_rtc_pm_ops,
    + max77802_rtc_suspend, max77802_rtc_resume);
    +
    +static const struct platform_device_id rtc_id[] = {
    + { "max77802-rtc", 0 },
    + {},
    +};
    +
    +static struct platform_driver max77802_rtc_driver = {
    + .driver = {
    + .name = "max77802-rtc",
    + .owner = THIS_MODULE,
    + .pm = &max77802_rtc_pm_ops,
    + },
    + .probe = max77802_rtc_probe,
    + .remove = max77802_rtc_remove,
    + .shutdown = max77802_rtc_shutdown,
    + .id_table = rtc_id,
    +};
    +
    +module_platform_driver(max77802_rtc_driver);
    +
    +MODULE_DESCRIPTION("Maxim MAX77802 RTC driver");
    +MODULE_AUTHOR("Simon Glass <sjg@chromium.org>");
    +MODULE_LICENSE("GPL");
    --
    2.0.0.rc2


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