diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/Kconfig | 19 | ||||
| -rw-r--r-- | drivers/rtc/Makefile | 3 | ||||
| -rw-r--r-- | drivers/rtc/rtc-ab8500.c | 103 | ||||
| -rw-r--r-- | drivers/rtc/rtc-max8998.c | 300 | ||||
| -rw-r--r-- | drivers/rtc/rtc-mc13783.c | 428 | ||||
| -rw-r--r-- | drivers/rtc/rtc-mc13xxx.c | 437 |
6 files changed, 807 insertions, 483 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 6a77437d4f5a..2883428d5ac8 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -196,6 +196,16 @@ config RTC_DRV_MAX8925 This driver can also be built as a module. If so, the module will be called rtc-max8925. +config RTC_DRV_MAX8998 + tristate "Maxim MAX8998" + depends on MFD_MAX8998 + help + If you say yes here you will get support for the + RTC of Maxim MAX8998 PMIC. + + This driver can also be built as a module. If so, the module + will be called rtc-max8998. + config RTC_DRV_RS5C372 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A" help @@ -926,11 +936,12 @@ config RTC_DRV_PCAP If you say Y here you will get support for the RTC found on the PCAP2 ASIC used on some Motorola phones. -config RTC_DRV_MC13783 - depends on MFD_MC13783 - tristate "Freescale MC13783 RTC" +config RTC_DRV_MC13XXX + depends on MFD_MC13XXX + tristate "Freescale MC13xxx RTC" help - This enables support for the Freescale MC13783 PMIC RTC + This enables support for the RTCs found on Freescale's PMICs + MC13783 and MC13892. config RTC_DRV_MPC5121 tristate "Freescale MPC5121 built-in RTC" diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 7a7cb3228a1d..4c2832df4697 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -60,8 +60,9 @@ obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o obj-$(CONFIG_RTC_MXC) += rtc-mxc.o obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o obj-$(CONFIG_RTC_DRV_MAX8925) += rtc-max8925.o +obj-$(CONFIG_RTC_DRV_MAX8998) += rtc-max8998.o obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o -obj-$(CONFIG_RTC_DRV_MC13783) += rtc-mc13783.o +obj-$(CONFIG_RTC_DRV_MC13XXX) += rtc-mc13xxx.o obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o obj-$(CONFIG_RTC_DRV_MPC5121) += rtc-mpc5121.o obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c index 2fda03125e55..e346705aae92 100644 --- a/drivers/rtc/rtc-ab8500.c +++ b/drivers/rtc/rtc-ab8500.c @@ -14,26 +14,26 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/rtc.h> +#include <linux/mfd/abx500.h> #include <linux/mfd/ab8500.h> #include <linux/delay.h> -#define AB8500_RTC_SOFF_STAT_REG 0x0F00 -#define AB8500_RTC_CC_CONF_REG 0x0F01 -#define AB8500_RTC_READ_REQ_REG 0x0F02 -#define AB8500_RTC_WATCH_TSECMID_REG 0x0F03 -#define AB8500_RTC_WATCH_TSECHI_REG 0x0F04 -#define AB8500_RTC_WATCH_TMIN_LOW_REG 0x0F05 -#define AB8500_RTC_WATCH_TMIN_MID_REG 0x0F06 -#define AB8500_RTC_WATCH_TMIN_HI_REG 0x0F07 -#define AB8500_RTC_ALRM_MIN_LOW_REG 0x0F08 -#define AB8500_RTC_ALRM_MIN_MID_REG 0x0F09 -#define AB8500_RTC_ALRM_MIN_HI_REG 0x0F0A -#define AB8500_RTC_STAT_REG 0x0F0B -#define AB8500_RTC_BKUP_CHG_REG 0x0F0C -#define AB8500_RTC_FORCE_BKUP_REG 0x0F0D -#define AB8500_RTC_CALIB_REG 0x0F0E -#define AB8500_RTC_SWITCH_STAT_REG 0x0F0F -#define AB8500_REV_REG 0x1080 +#define AB8500_RTC_SOFF_STAT_REG 0x00 +#define AB8500_RTC_CC_CONF_REG 0x01 +#define AB8500_RTC_READ_REQ_REG 0x02 +#define AB8500_RTC_WATCH_TSECMID_REG 0x03 +#define AB8500_RTC_WATCH_TSECHI_REG 0x04 +#define AB8500_RTC_WATCH_TMIN_LOW_REG 0x05 +#define AB8500_RTC_WATCH_TMIN_MID_REG 0x06 +#define AB8500_RTC_WATCH_TMIN_HI_REG 0x07 +#define AB8500_RTC_ALRM_MIN_LOW_REG 0x08 +#define AB8500_RTC_ALRM_MIN_MID_REG 0x09 +#define AB8500_RTC_ALRM_MIN_HI_REG 0x0A +#define AB8500_RTC_STAT_REG 0x0B +#define AB8500_RTC_BKUP_CHG_REG 0x0C +#define AB8500_RTC_FORCE_BKUP_REG 0x0D +#define AB8500_RTC_CALIB_REG 0x0E +#define AB8500_RTC_SWITCH_STAT_REG 0x0F /* RtcReadRequest bits */ #define RTC_READ_REQUEST 0x01 @@ -46,13 +46,13 @@ #define COUNTS_PER_SEC (0xF000 / 60) #define AB8500_RTC_EPOCH 2000 -static const unsigned long ab8500_rtc_time_regs[] = { +static const u8 ab8500_rtc_time_regs[] = { AB8500_RTC_WATCH_TMIN_HI_REG, AB8500_RTC_WATCH_TMIN_MID_REG, AB8500_RTC_WATCH_TMIN_LOW_REG, AB8500_RTC_WATCH_TSECHI_REG, AB8500_RTC_WATCH_TSECMID_REG }; -static const unsigned long ab8500_rtc_alarm_regs[] = { +static const u8 ab8500_rtc_alarm_regs[] = { AB8500_RTC_ALRM_MIN_HI_REG, AB8500_RTC_ALRM_MIN_MID_REG, AB8500_RTC_ALRM_MIN_LOW_REG }; @@ -76,29 +76,30 @@ static unsigned long get_elapsed_seconds(int year) static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm) { - struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); unsigned long timeout = jiffies + HZ; int retval, i; unsigned long mins, secs; unsigned char buf[ARRAY_SIZE(ab8500_rtc_time_regs)]; + u8 value; /* Request a data read */ - retval = ab8500_write(ab8500, AB8500_RTC_READ_REQ_REG, - RTC_READ_REQUEST); + retval = abx500_set_register_interruptible(dev, + AB8500_RTC, AB8500_RTC_READ_REQ_REG, RTC_READ_REQUEST); if (retval < 0) return retval; /* Early AB8500 chips will not clear the rtc read request bit */ - if (ab8500->revision == 0) { + if (abx500_get_chip_id(dev) == 0) { msleep(1); } else { /* Wait for some cycles after enabling the rtc read in ab8500 */ while (time_before(jiffies, timeout)) { - retval = ab8500_read(ab8500, AB8500_RTC_READ_REQ_REG); + retval = abx500_get_register_interruptible(dev, + AB8500_RTC, AB8500_RTC_READ_REQ_REG, &value); if (retval < 0) return retval; - if (!(retval & RTC_READ_REQUEST)) + if (!(value & RTC_READ_REQUEST)) break; msleep(1); @@ -107,10 +108,11 @@ static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm) /* Read the Watchtime registers */ for (i = 0; i < ARRAY_SIZE(ab8500_rtc_time_regs); i++) { - retval = ab8500_read(ab8500, ab8500_rtc_time_regs[i]); + retval = abx500_get_register_interruptible(dev, + AB8500_RTC, ab8500_rtc_time_regs[i], &value); if (retval < 0) return retval; - buf[i] = retval; + buf[i] = value; } mins = (buf[0] << 16) | (buf[1] << 8) | buf[2]; @@ -128,7 +130,6 @@ static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm) static int ab8500_rtc_set_time(struct device *dev, struct rtc_time *tm) { - struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); int retval, i; unsigned char buf[ARRAY_SIZE(ab8500_rtc_time_regs)]; unsigned long no_secs, no_mins, secs = 0; @@ -162,27 +163,29 @@ static int ab8500_rtc_set_time(struct device *dev, struct rtc_time *tm) buf[0] = (no_mins >> 16) & 0xFF; for (i = 0; i < ARRAY_SIZE(ab8500_rtc_time_regs); i++) { - retval = ab8500_write(ab8500, ab8500_rtc_time_regs[i], buf[i]); + retval = abx500_set_register_interruptible(dev, AB8500_RTC, + ab8500_rtc_time_regs[i], buf[i]); if (retval < 0) return retval; } /* Request a data write */ - return ab8500_write(ab8500, AB8500_RTC_READ_REQ_REG, RTC_WRITE_REQUEST); + return abx500_set_register_interruptible(dev, AB8500_RTC, + AB8500_RTC_READ_REQ_REG, RTC_WRITE_REQUEST); } static int ab8500_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { - struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); int retval, i; - int rtc_ctrl; + u8 rtc_ctrl, value; unsigned char buf[ARRAY_SIZE(ab8500_rtc_alarm_regs)]; unsigned long secs, mins; /* Check if the alarm is enabled or not */ - rtc_ctrl = ab8500_read(ab8500, AB8500_RTC_STAT_REG); - if (rtc_ctrl < 0) - return rtc_ctrl; + retval = abx500_get_register_interruptible(dev, AB8500_RTC, + AB8500_RTC_STAT_REG, &rtc_ctrl); + if (retval < 0) + return retval; if (rtc_ctrl & RTC_ALARM_ENA) alarm->enabled = 1; @@ -192,10 +195,11 @@ static int ab8500_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) alarm->pending = 0; for (i = 0; i < ARRAY_SIZE(ab8500_rtc_alarm_regs); i++) { - retval = ab8500_read(ab8500, ab8500_rtc_alarm_regs[i]); + retval = abx500_get_register_interruptible(dev, AB8500_RTC, + ab8500_rtc_alarm_regs[i], &value); if (retval < 0) return retval; - buf[i] = retval; + buf[i] = value; } mins = (buf[0] << 16) | (buf[1] << 8) | (buf[2]); @@ -211,15 +215,13 @@ static int ab8500_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) static int ab8500_rtc_irq_enable(struct device *dev, unsigned int enabled) { - struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); - - return ab8500_set_bits(ab8500, AB8500_RTC_STAT_REG, RTC_ALARM_ENA, - enabled ? RTC_ALARM_ENA : 0); + return abx500_mask_and_set_register_interruptible(dev, AB8500_RTC, + AB8500_RTC_STAT_REG, RTC_ALARM_ENA, + enabled ? RTC_ALARM_ENA : 0); } static int ab8500_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) { - struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); int retval, i; unsigned char buf[ARRAY_SIZE(ab8500_rtc_alarm_regs)]; unsigned long mins, secs = 0; @@ -247,7 +249,8 @@ static int ab8500_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) /* Set the alarm time */ for (i = 0; i < ARRAY_SIZE(ab8500_rtc_alarm_regs); i++) { - retval = ab8500_write(ab8500, ab8500_rtc_alarm_regs[i], buf[i]); + retval = abx500_set_register_interruptible(dev, AB8500_RTC, + ab8500_rtc_alarm_regs[i], buf[i]); if (retval < 0) return retval; } @@ -276,10 +279,9 @@ static const struct rtc_class_ops ab8500_rtc_ops = { static int __devinit ab8500_rtc_probe(struct platform_device *pdev) { - struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); int err; struct rtc_device *rtc; - int rtc_ctrl; + u8 rtc_ctrl; int irq; irq = platform_get_irq_byname(pdev, "ALARM"); @@ -287,17 +289,18 @@ static int __devinit ab8500_rtc_probe(struct platform_device *pdev) return irq; /* For RTC supply test */ - err = ab8500_set_bits(ab8500, AB8500_RTC_STAT_REG, RTC_STATUS_DATA, - RTC_STATUS_DATA); + err = abx500_mask_and_set_register_interruptible(&pdev->dev, AB8500_RTC, + AB8500_RTC_STAT_REG, RTC_STATUS_DATA, RTC_STATUS_DATA); if (err < 0) return err; /* Wait for reset by the PorRtc */ msleep(1); - rtc_ctrl = ab8500_read(ab8500, AB8500_RTC_STAT_REG); - if (rtc_ctrl < 0) - return rtc_ctrl; + err = abx500_get_register_interruptible(&pdev->dev, AB8500_RTC, + AB8500_RTC_STAT_REG, &rtc_ctrl); + if (err < 0) + return err; /* Check if the RTC Supply fails */ if (!(rtc_ctrl & RTC_STATUS_DATA)) { diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c new file mode 100644 index 000000000000..f22dee35f330 --- /dev/null +++ b/drivers/rtc/rtc-max8998.c @@ -0,0 +1,300 @@ +/* + * 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> + +#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; +}; + +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]; + + max8998_tm_to_data(tm, data); + + return max8998_bulk_write(info->rtc, MAX8998_RTC_SEC, 8, data); +} + +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) +{ + return max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, 0); +} + +static int max8998_rtc_start_alarm(struct max8998_rtc_info *info) +{ + return max8998_write_reg(info->rtc, MAX8998_ALARM0_CONF, 0x77); +} + +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 (alrm->enabled) + return max8998_rtc_start_alarm(info); + + return 0; +} + +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 __devinit max8998_rtc_probe(struct platform_device *pdev) +{ + struct max8998_dev *max8998 = dev_get_drvdata(pdev->dev.parent); + struct max8998_rtc_info *info; + int ret; + + info = kzalloc(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; + + info->rtc_dev = rtc_device_register("max8998-rtc", &pdev->dev, + &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; + } + + platform_set_drvdata(pdev, info); + + ret = request_threaded_irq(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); + + return 0; + +out_rtc: + kfree(info); + return ret; +} + +static int __devexit max8998_rtc_remove(struct platform_device *pdev) +{ + struct max8998_rtc_info *info = platform_get_drvdata(pdev); + + if (info) { + free_irq(info->irq, info); + rtc_device_unregister(info->rtc_dev); + kfree(info); + } + + return 0; +} + +static struct platform_driver max8998_rtc_driver = { + .driver = { + .name = "max8998-rtc", + .owner = THIS_MODULE, + }, + .probe = max8998_rtc_probe, + .remove = __devexit_p(max8998_rtc_remove), +}; + +static int __init max8998_rtc_init(void) +{ + return platform_driver_register(&max8998_rtc_driver); +} +module_init(max8998_rtc_init); + +static void __exit max8998_rtc_exit(void) +{ + platform_driver_unregister(&max8998_rtc_driver); +} +module_exit(max8998_rtc_exit); + +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"); diff --git a/drivers/rtc/rtc-mc13783.c b/drivers/rtc/rtc-mc13783.c deleted file mode 100644 index 675bfb515367..000000000000 --- a/drivers/rtc/rtc-mc13783.c +++ /dev/null @@ -1,428 +0,0 @@ -/* - * Real Time Clock driver for Freescale MC13783 PMIC - * - * (C) 2009 Sascha Hauer, Pengutronix - * (C) 2009 Uwe Kleine-Koenig, Pengutronix - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/mfd/mc13783.h> -#include <linux/platform_device.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/rtc.h> - -#define DRIVER_NAME "mc13783-rtc" - -#define MC13783_RTCTOD 20 -#define MC13783_RTCTODA 21 -#define MC13783_RTCDAY 22 -#define MC13783_RTCDAYA 23 - -struct mc13783_rtc { - struct rtc_device *rtc; - struct mc13783 *mc13783; - int valid; -}; - -static int mc13783_rtc_irq_enable_unlocked(struct device *dev, - unsigned int enabled, int irq) -{ - struct mc13783_rtc *priv = dev_get_drvdata(dev); - int (*func)(struct mc13783 *mc13783, int irq); - - if (!priv->valid) - return -ENODATA; - - func = enabled ? mc13783_irq_unmask : mc13783_irq_mask; - return func(priv->mc13783, irq); -} - -static int mc13783_rtc_irq_enable(struct device *dev, - unsigned int enabled, int irq) -{ - struct mc13783_rtc *priv = dev_get_drvdata(dev); - int ret; - - mc13783_lock(priv->mc13783); - - ret = mc13783_rtc_irq_enable_unlocked(dev, enabled, irq); - - mc13783_unlock(priv->mc13783); - - return ret; -} - -static int mc13783_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - struct mc13783_rtc *priv = dev_get_drvdata(dev); - unsigned int seconds, days1, days2; - unsigned long s1970; - int ret; - - mc13783_lock(priv->mc13783); - - if (!priv->valid) { - ret = -ENODATA; - goto out; - } - - ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days1); - if (unlikely(ret)) - goto out; - - ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTOD, &seconds); - if (unlikely(ret)) - goto out; - - ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days2); -out: - mc13783_unlock(priv->mc13783); - - if (ret) - return ret; - - if (days2 == days1 + 1) { - if (seconds >= 86400 / 2) - days2 = days1; - else - days1 = days2; - } - - if (days1 != days2) - return -EIO; - - s1970 = days1 * 86400 + seconds; - - rtc_time_to_tm(s1970, tm); - - return rtc_valid_tm(tm); -} - -static int mc13783_rtc_set_mmss(struct device *dev, unsigned long secs) -{ - struct mc13783_rtc *priv = dev_get_drvdata(dev); - unsigned int seconds, days; - unsigned int alarmseconds; - int ret; - - seconds = secs % 86400; - days = secs / 86400; - - mc13783_lock(priv->mc13783); - - /* - * temporarily invalidate alarm to prevent triggering it when the day is - * already updated while the time isn't yet. - */ - ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTODA, &alarmseconds); - if (unlikely(ret)) - goto out; - - if (alarmseconds < 86400) { - ret = mc13783_reg_write(priv->mc13783, - MC13783_RTCTODA, 0x1ffff); - if (unlikely(ret)) - goto out; - } - - /* - * write seconds=0 to prevent a day switch between writing days - * and seconds below - */ - ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTOD, 0); - if (unlikely(ret)) - goto out; - - ret = mc13783_reg_write(priv->mc13783, MC13783_RTCDAY, days); - if (unlikely(ret)) - goto out; - - ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTOD, seconds); - if (unlikely(ret)) - goto out; - - /* restore alarm */ - if (alarmseconds < 86400) { - ret = mc13783_reg_write(priv->mc13783, - MC13783_RTCTODA, alarmseconds); - if (unlikely(ret)) - goto out; - } - - ret = mc13783_irq_ack(priv->mc13783, MC13783_IRQ_RTCRST); - if (unlikely(ret)) - goto out; - - ret = mc13783_irq_unmask(priv->mc13783, MC13783_IRQ_RTCRST); -out: - priv->valid = !ret; - - mc13783_unlock(priv->mc13783); - - return ret; -} - -static int mc13783_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - struct mc13783_rtc *priv = dev_get_drvdata(dev); - unsigned seconds, days; - unsigned long s1970; - int enabled, pending; - int ret; - - mc13783_lock(priv->mc13783); - - ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTODA, &seconds); - if (unlikely(ret)) - goto out; - if (seconds >= 86400) { - ret = -ENODATA; - goto out; - } - - ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days); - if (unlikely(ret)) - goto out; - - ret = mc13783_irq_status(priv->mc13783, MC13783_IRQ_TODA, - &enabled, &pending); - -out: - mc13783_unlock(priv->mc13783); - - if (ret) - return ret; - - alarm->enabled = enabled; - alarm->pending = pending; - - s1970 = days * 86400 + seconds; - - rtc_time_to_tm(s1970, &alarm->time); - dev_dbg(dev, "%s: %lu\n", __func__, s1970); - - return 0; -} - -static int mc13783_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) -{ - struct mc13783_rtc *priv = dev_get_drvdata(dev); - unsigned long s1970; - unsigned seconds, days; - int ret; - - mc13783_lock(priv->mc13783); - - /* disable alarm to prevent false triggering */ - ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTODA, 0x1ffff); - if (unlikely(ret)) - goto out; - - ret = mc13783_irq_ack(priv->mc13783, MC13783_IRQ_TODA); - if (unlikely(ret)) - goto out; - - ret = rtc_tm_to_time(&alarm->time, &s1970); - if (unlikely(ret)) - goto out; - - dev_dbg(dev, "%s: o%2.s %lu\n", __func__, alarm->enabled ? "n" : "ff", - s1970); - - ret = mc13783_rtc_irq_enable_unlocked(dev, alarm->enabled, - MC13783_IRQ_TODA); - if (unlikely(ret)) - goto out; - - seconds = s1970 % 86400; - days = s1970 / 86400; - - ret = mc13783_reg_write(priv->mc13783, MC13783_RTCDAYA, days); - if (unlikely(ret)) - goto out; - - ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTODA, seconds); - -out: - mc13783_unlock(priv->mc13783); - - return ret; -} - -static irqreturn_t mc13783_rtc_alarm_handler(int irq, void *dev) -{ - struct mc13783_rtc *priv = dev; - struct mc13783 *mc13783 = priv->mc13783; - - dev_dbg(&priv->rtc->dev, "Alarm\n"); - - rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_AF); - - mc13783_irq_ack(mc13783, irq); - - return IRQ_HANDLED; -} - -static irqreturn_t mc13783_rtc_update_handler(int irq, void *dev) -{ - struct mc13783_rtc *priv = dev; - struct mc13783 *mc13783 = priv->mc13783; - - dev_dbg(&priv->rtc->dev, "1HZ\n"); - - rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_UF); - - mc13783_irq_ack(mc13783, irq); - - return IRQ_HANDLED; -} - -static int mc13783_rtc_update_irq_enable(struct device *dev, - unsigned int enabled) -{ - return mc13783_rtc_irq_enable(dev, enabled, MC13783_IRQ_1HZ); -} - -static int mc13783_rtc_alarm_irq_enable(struct device *dev, - unsigned int enabled) -{ - return mc13783_rtc_irq_enable(dev, enabled, MC13783_IRQ_TODA); -} - -static const struct rtc_class_ops mc13783_rtc_ops = { - .read_time = mc13783_rtc_read_time, - .set_mmss = mc13783_rtc_set_mmss, - .read_alarm = mc13783_rtc_read_alarm, - .set_alarm = mc13783_rtc_set_alarm, - .alarm_irq_enable = mc13783_rtc_alarm_irq_enable, - .update_irq_enable = mc13783_rtc_update_irq_enable, -}; - -static irqreturn_t mc13783_rtc_reset_handler(int irq, void *dev) -{ - struct mc13783_rtc *priv = dev; - struct mc13783 *mc13783 = priv->mc13783; - - dev_dbg(&priv->rtc->dev, "RTCRST\n"); - priv->valid = 0; - - mc13783_irq_mask(mc13783, irq); - - return IRQ_HANDLED; -} - -static int __devinit mc13783_rtc_probe(struct platform_device *pdev) -{ - int ret; - struct mc13783_rtc *priv; - struct mc13783 *mc13783; - int rtcrst_pending; - - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - mc13783 = dev_get_drvdata(pdev->dev.parent); - priv->mc13783 = mc13783; - - platform_set_drvdata(pdev, priv); - - mc13783_lock(mc13783); - - ret = mc13783_irq_request(mc13783, MC13783_IRQ_RTCRST, - mc13783_rtc_reset_handler, DRIVER_NAME, priv); - if (ret) - goto err_reset_irq_request; - - ret = mc13783_irq_status(mc13783, MC13783_IRQ_RTCRST, - NULL, &rtcrst_pending); - if (ret) - goto err_reset_irq_status; - - priv->valid = !rtcrst_pending; - - ret = mc13783_irq_request_nounmask(mc13783, MC13783_IRQ_1HZ, - mc13783_rtc_update_handler, DRIVER_NAME, priv); - if (ret) - goto err_update_irq_request; - - ret = mc13783_irq_request_nounmask(mc13783, MC13783_IRQ_TODA, - mc13783_rtc_alarm_handler, DRIVER_NAME, priv); - if (ret) - goto err_alarm_irq_request; - - priv->rtc = rtc_device_register(pdev->name, - &pdev->dev, &mc13783_rtc_ops, THIS_MODULE); - if (IS_ERR(priv->rtc)) { - ret = PTR_ERR(priv->rtc); - - mc13783_irq_free(mc13783, MC13783_IRQ_TODA, priv); -err_alarm_irq_request: - - mc13783_irq_free(mc13783, MC13783_IRQ_1HZ, priv); -err_update_irq_request: - -err_reset_irq_status: - - mc13783_irq_free(mc13783, MC13783_IRQ_RTCRST, priv); -err_reset_irq_request: - - platform_set_drvdata(pdev, NULL); - kfree(priv); - } - - mc13783_unlock(mc13783); - - return ret; -} - -static int __devexit mc13783_rtc_remove(struct platform_device *pdev) -{ - struct mc13783_rtc *priv = platform_get_drvdata(pdev); - - mc13783_lock(priv->mc13783); - - rtc_device_unregister(priv->rtc); - - mc13783_irq_free(priv->mc13783, MC13783_IRQ_TODA, priv); - mc13783_irq_free(priv->mc13783, MC13783_IRQ_1HZ, priv); - mc13783_irq_free(priv->mc13783, MC13783_IRQ_RTCRST, priv); - - mc13783_unlock(priv->mc13783); - - platform_set_drvdata(pdev, NULL); - - kfree(priv); - - return 0; -} - -static struct platform_driver mc13783_rtc_driver = { - .remove = __devexit_p(mc13783_rtc_remove), - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - }, -}; - -static int __init mc13783_rtc_init(void) -{ - return platform_driver_probe(&mc13783_rtc_driver, &mc13783_rtc_probe); -} -module_init(mc13783_rtc_init); - -static void __exit mc13783_rtc_exit(void) -{ - platform_driver_unregister(&mc13783_rtc_driver); -} -module_exit(mc13783_rtc_exit); - -MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); -MODULE_DESCRIPTION("RTC driver for Freescale MC13783 PMIC"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:" DRIVER_NAME); diff --git a/drivers/rtc/rtc-mc13xxx.c b/drivers/rtc/rtc-mc13xxx.c new file mode 100644 index 000000000000..5314b153bfba --- /dev/null +++ b/drivers/rtc/rtc-mc13xxx.c @@ -0,0 +1,437 @@ +/* + * Real Time Clock driver for Freescale MC13XXX PMIC + * + * (C) 2009 Sascha Hauer, Pengutronix + * (C) 2009 Uwe Kleine-Koenig, Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/mfd/mc13xxx.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/rtc.h> + +#define DRIVER_NAME "mc13xxx-rtc" + +#define MC13XXX_RTCTOD 20 +#define MC13XXX_RTCTODA 21 +#define MC13XXX_RTCDAY 22 +#define MC13XXX_RTCDAYA 23 + +struct mc13xxx_rtc { + struct rtc_device *rtc; + struct mc13xxx *mc13xxx; + int valid; +}; + +static int mc13xxx_rtc_irq_enable_unlocked(struct device *dev, + unsigned int enabled, int irq) +{ + struct mc13xxx_rtc *priv = dev_get_drvdata(dev); + int (*func)(struct mc13xxx *mc13xxx, int irq); + + if (!priv->valid) + return -ENODATA; + + func = enabled ? mc13xxx_irq_unmask : mc13xxx_irq_mask; + return func(priv->mc13xxx, irq); +} + +static int mc13xxx_rtc_irq_enable(struct device *dev, + unsigned int enabled, int irq) +{ + struct mc13xxx_rtc *priv = dev_get_drvdata(dev); + int ret; + + mc13xxx_lock(priv->mc13xxx); + + ret = mc13xxx_rtc_irq_enable_unlocked(dev, enabled, irq); + + mc13xxx_unlock(priv->mc13xxx); + + return ret; +} + +static int mc13xxx_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct mc13xxx_rtc *priv = dev_get_drvdata(dev); + unsigned int seconds, days1, days2; + unsigned long s1970; + int ret; + + mc13xxx_lock(priv->mc13xxx); + + if (!priv->valid) { + ret = -ENODATA; + goto out; + } + + ret = mc13xxx_reg_read(priv->mc13xxx, MC13XXX_RTCDAY, &days1); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_reg_read(priv->mc13xxx, MC13XXX_RTCTOD, &seconds); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_reg_read(priv->mc13xxx, MC13XXX_RTCDAY, &days2); +out: + mc13xxx_unlock(priv->mc13xxx); + + if (ret) + return ret; + + if (days2 == days1 + 1) { + if (seconds >= 86400 / 2) + days2 = days1; + else + days1 = days2; + } + + if (days1 != days2) + return -EIO; + + s1970 = days1 * 86400 + seconds; + + rtc_time_to_tm(s1970, tm); + + return rtc_valid_tm(tm); +} + +static int mc13xxx_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + struct mc13xxx_rtc *priv = dev_get_drvdata(dev); + unsigned int seconds, days; + unsigned int alarmseconds; + int ret; + + seconds = secs % 86400; + days = secs / 86400; + + mc13xxx_lock(priv->mc13xxx); + + /* + * temporarily invalidate alarm to prevent triggering it when the day is + * already updated while the time isn't yet. + */ + ret = mc13xxx_reg_read(priv->mc13xxx, MC13XXX_RTCTODA, &alarmseconds); + if (unlikely(ret)) + goto out; + + if (alarmseconds < 86400) { + ret = mc13xxx_reg_write(priv->mc13xxx, + MC13XXX_RTCTODA, 0x1ffff); + if (unlikely(ret)) + goto out; + } + + /* + * write seconds=0 to prevent a day switch between writing days + * and seconds below + */ + ret = mc13xxx_reg_write(priv->mc13xxx, MC13XXX_RTCTOD, 0); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_reg_write(priv->mc13xxx, MC13XXX_RTCDAY, days); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_reg_write(priv->mc13xxx, MC13XXX_RTCTOD, seconds); + if (unlikely(ret)) + goto out; + + /* restore alarm */ + if (alarmseconds < 86400) { + ret = mc13xxx_reg_write(priv->mc13xxx, + MC13XXX_RTCTODA, alarmseconds); + if (unlikely(ret)) + goto out; + } + + ret = mc13xxx_irq_ack(priv->mc13xxx, MC13XXX_IRQ_RTCRST); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_irq_unmask(priv->mc13xxx, MC13XXX_IRQ_RTCRST); +out: + priv->valid = !ret; + + mc13xxx_unlock(priv->mc13xxx); + + return ret; +} + +static int mc13xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct mc13xxx_rtc *priv = dev_get_drvdata(dev); + unsigned seconds, days; + unsigned long s1970; + int enabled, pending; + int ret; + + mc13xxx_lock(priv->mc13xxx); + + ret = mc13xxx_reg_read(priv->mc13xxx, MC13XXX_RTCTODA, &seconds); + if (unlikely(ret)) + goto out; + if (seconds >= 86400) { + ret = -ENODATA; + goto out; + } + + ret = mc13xxx_reg_read(priv->mc13xxx, MC13XXX_RTCDAY, &days); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_irq_status(priv->mc13xxx, MC13XXX_IRQ_TODA, + &enabled, &pending); + +out: + mc13xxx_unlock(priv->mc13xxx); + + if (ret) + return ret; + + alarm->enabled = enabled; + alarm->pending = pending; + + s1970 = days * 86400 + seconds; + + rtc_time_to_tm(s1970, &alarm->time); + dev_dbg(dev, "%s: %lu\n", __func__, s1970); + + return 0; +} + +static int mc13xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct mc13xxx_rtc *priv = dev_get_drvdata(dev); + unsigned long s1970; + unsigned seconds, days; + int ret; + + mc13xxx_lock(priv->mc13xxx); + + /* disable alarm to prevent false triggering */ + ret = mc13xxx_reg_write(priv->mc13xxx, MC13XXX_RTCTODA, 0x1ffff); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_irq_ack(priv->mc13xxx, MC13XXX_IRQ_TODA); + if (unlikely(ret)) + goto out; + + ret = rtc_tm_to_time(&alarm->time, &s1970); + if (unlikely(ret)) + goto out; + + dev_dbg(dev, "%s: o%2.s %lu\n", __func__, alarm->enabled ? "n" : "ff", + s1970); + + ret = mc13xxx_rtc_irq_enable_unlocked(dev, alarm->enabled, + MC13XXX_IRQ_TODA); + if (unlikely(ret)) + goto out; + + seconds = s1970 % 86400; + days = s1970 / 86400; + + ret = mc13xxx_reg_write(priv->mc13xxx, MC13XXX_RTCDAYA, days); + if (unlikely(ret)) + goto out; + + ret = mc13xxx_reg_write(priv->mc13xxx, MC13XXX_RTCTODA, seconds); + +out: + mc13xxx_unlock(priv->mc13xxx); + + return ret; +} + +static irqreturn_t mc13xxx_rtc_alarm_handler(int irq, void *dev) +{ + struct mc13xxx_rtc *priv = dev; + struct mc13xxx *mc13xxx = priv->mc13xxx; + + dev_dbg(&priv->rtc->dev, "Alarm\n"); + + rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_AF); + + mc13xxx_irq_ack(mc13xxx, irq); + + return IRQ_HANDLED; +} + +static irqreturn_t mc13xxx_rtc_update_handler(int irq, void *dev) +{ + struct mc13xxx_rtc *priv = dev; + struct mc13xxx *mc13xxx = priv->mc13xxx; + + dev_dbg(&priv->rtc->dev, "1HZ\n"); + + rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_UF); + + mc13xxx_irq_ack(mc13xxx, irq); + + return IRQ_HANDLED; +} + +static int mc13xxx_rtc_update_irq_enable(struct device *dev, + unsigned int enabled) +{ + return mc13xxx_rtc_irq_enable(dev, enabled, MC13XXX_IRQ_1HZ); +} + +static int mc13xxx_rtc_alarm_irq_enable(struct device *dev, + unsigned int enabled) +{ + return mc13xxx_rtc_irq_enable(dev, enabled, MC13XXX_IRQ_TODA); +} + +static const struct rtc_class_ops mc13xxx_rtc_ops = { + .read_time = mc13xxx_rtc_read_time, + .set_mmss = mc13xxx_rtc_set_mmss, + .read_alarm = mc13xxx_rtc_read_alarm, + .set_alarm = mc13xxx_rtc_set_alarm, + .alarm_irq_enable = mc13xxx_rtc_alarm_irq_enable, + .update_irq_enable = mc13xxx_rtc_update_irq_enable, +}; + +static irqreturn_t mc13xxx_rtc_reset_handler(int irq, void *dev) +{ + struct mc13xxx_rtc *priv = dev; + struct mc13xxx *mc13xxx = priv->mc13xxx; + + dev_dbg(&priv->rtc->dev, "RTCRST\n"); + priv->valid = 0; + + mc13xxx_irq_mask(mc13xxx, irq); + + return IRQ_HANDLED; +} + +static int __devinit mc13xxx_rtc_probe(struct platform_device *pdev) +{ + int ret; + struct mc13xxx_rtc *priv; + struct mc13xxx *mc13xxx; + int rtcrst_pending; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + mc13xxx = dev_get_drvdata(pdev->dev.parent); + priv->mc13xxx = mc13xxx; + + platform_set_drvdata(pdev, priv); + + mc13xxx_lock(mc13xxx); + + ret = mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_RTCRST, + mc13xxx_rtc_reset_handler, DRIVER_NAME, priv); + if (ret) + goto err_reset_irq_request; + + ret = mc13xxx_irq_status(mc13xxx, MC13XXX_IRQ_RTCRST, + NULL, &rtcrst_pending); + if (ret) + goto err_reset_irq_status; + + priv->valid = !rtcrst_pending; + + ret = mc13xxx_irq_request_nounmask(mc13xxx, MC13XXX_IRQ_1HZ, + mc13xxx_rtc_update_handler, DRIVER_NAME, priv); + if (ret) + goto err_update_irq_request; + + ret = mc13xxx_irq_request_nounmask(mc13xxx, MC13XXX_IRQ_TODA, + mc13xxx_rtc_alarm_handler, DRIVER_NAME, priv); + if (ret) + goto err_alarm_irq_request; + + priv->rtc = rtc_device_register(pdev->name, + &pdev->dev, &mc13xxx_rtc_ops, THIS_MODULE); + if (IS_ERR(priv->rtc)) { + ret = PTR_ERR(priv->rtc); + + mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_TODA, priv); +err_alarm_irq_request: + + mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_1HZ, priv); +err_update_irq_request: + +err_reset_irq_status: + + mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_RTCRST, priv); +err_reset_irq_request: + + platform_set_drvdata(pdev, NULL); + kfree(priv); + } + + mc13xxx_unlock(mc13xxx); + + return ret; +} + +static int __devexit mc13xxx_rtc_remove(struct platform_device *pdev) +{ + struct mc13xxx_rtc *priv = platform_get_drvdata(pdev); + + mc13xxx_lock(priv->mc13xxx); + + rtc_device_unregister(priv->rtc); + + mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_TODA, priv); + mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_1HZ, priv); + mc13xxx_irq_free(priv->mc13xxx, MC13XXX_IRQ_RTCRST, priv); + + mc13xxx_unlock(priv->mc13xxx); + + platform_set_drvdata(pdev, NULL); + + kfree(priv); + + return 0; +} + +const struct platform_device_id mc13xxx_rtc_idtable[] = { + { + .name = "mc13783-rtc", + }, { + .name = "mc13892-rtc", + }, +}; + +static struct platform_driver mc13xxx_rtc_driver = { + .id_table = mc13xxx_rtc_idtable, + .remove = __devexit_p(mc13xxx_rtc_remove), + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init mc13xxx_rtc_init(void) +{ + return platform_driver_probe(&mc13xxx_rtc_driver, &mc13xxx_rtc_probe); +} +module_init(mc13xxx_rtc_init); + +static void __exit mc13xxx_rtc_exit(void) +{ + platform_driver_unregister(&mc13xxx_rtc_driver); +} +module_exit(mc13xxx_rtc_exit); + +MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); +MODULE_DESCRIPTION("RTC driver for Freescale MC13XXX PMIC"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRIVER_NAME); |