15bccae6eSSangbeom Kim /* 25bccae6eSSangbeom Kim * Copyright (c) 2013 Samsung Electronics Co., Ltd 35bccae6eSSangbeom Kim * http://www.samsung.com 45bccae6eSSangbeom Kim * 55bccae6eSSangbeom Kim * Copyright (C) 2013 Google, Inc 65bccae6eSSangbeom Kim * 75bccae6eSSangbeom Kim * This program is free software; you can redistribute it and/or modify 85bccae6eSSangbeom Kim * it under the terms of the GNU General Public License as published by 95bccae6eSSangbeom Kim * the Free Software Foundation; either version 2 of the License, or 105bccae6eSSangbeom Kim * (at your option) any later version. 115bccae6eSSangbeom Kim * 125bccae6eSSangbeom Kim * This program is distributed in the hope that it will be useful, 135bccae6eSSangbeom Kim * but WITHOUT ANY WARRANTY; without even the implied warranty of 145bccae6eSSangbeom Kim * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 155bccae6eSSangbeom Kim * GNU General Public License for more details. 165bccae6eSSangbeom Kim */ 175bccae6eSSangbeom Kim 185bccae6eSSangbeom Kim #include <linux/module.h> 195bccae6eSSangbeom Kim #include <linux/i2c.h> 205bccae6eSSangbeom Kim #include <linux/slab.h> 215bccae6eSSangbeom Kim #include <linux/bcd.h> 225bccae6eSSangbeom Kim #include <linux/bitops.h> 235bccae6eSSangbeom Kim #include <linux/regmap.h> 245bccae6eSSangbeom Kim #include <linux/rtc.h> 255bccae6eSSangbeom Kim #include <linux/delay.h> 265bccae6eSSangbeom Kim #include <linux/platform_device.h> 275bccae6eSSangbeom Kim #include <linux/mfd/samsung/core.h> 285bccae6eSSangbeom Kim #include <linux/mfd/samsung/irq.h> 295bccae6eSSangbeom Kim #include <linux/mfd/samsung/rtc.h> 305bccae6eSSangbeom Kim 31d73238d4SKrzysztof Kozlowski /* 32d73238d4SKrzysztof Kozlowski * Maximum number of retries for checking changes in UDR field 33*602cb5bbSKrzysztof Kozlowski * of S5M_RTC_UDR_CON register (to limit possible endless loop). 34d73238d4SKrzysztof Kozlowski * 35d73238d4SKrzysztof Kozlowski * After writing to RTC registers (setting time or alarm) read the UDR field 36*602cb5bbSKrzysztof Kozlowski * in S5M_RTC_UDR_CON register. UDR is auto-cleared when data have 37d73238d4SKrzysztof Kozlowski * been transferred. 38d73238d4SKrzysztof Kozlowski */ 39d73238d4SKrzysztof Kozlowski #define UDR_READ_RETRY_CNT 5 40d73238d4SKrzysztof Kozlowski 415bccae6eSSangbeom Kim struct s5m_rtc_info { 425bccae6eSSangbeom Kim struct device *dev; 43e349c910SKrzysztof Kozlowski struct i2c_client *i2c; 445bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx; 455ccb7d71SGeert Uytterhoeven struct regmap *regmap; 465bccae6eSSangbeom Kim struct rtc_device *rtc_dev; 475bccae6eSSangbeom Kim int irq; 485bccae6eSSangbeom Kim int device_type; 495bccae6eSSangbeom Kim int rtc_24hr_mode; 505bccae6eSSangbeom Kim bool wtsr_smpl; 515bccae6eSSangbeom Kim }; 525bccae6eSSangbeom Kim 53e349c910SKrzysztof Kozlowski static const struct regmap_config s5m_rtc_regmap_config = { 54e349c910SKrzysztof Kozlowski .reg_bits = 8, 55e349c910SKrzysztof Kozlowski .val_bits = 8, 56e349c910SKrzysztof Kozlowski 57*602cb5bbSKrzysztof Kozlowski .max_register = S5M_RTC_REG_MAX, 58e349c910SKrzysztof Kozlowski }; 59e349c910SKrzysztof Kozlowski 60e349c910SKrzysztof Kozlowski static const struct regmap_config s2mps14_rtc_regmap_config = { 61e349c910SKrzysztof Kozlowski .reg_bits = 8, 62e349c910SKrzysztof Kozlowski .val_bits = 8, 63e349c910SKrzysztof Kozlowski 64e349c910SKrzysztof Kozlowski .max_register = S2MPS_RTC_REG_MAX, 65e349c910SKrzysztof Kozlowski }; 66e349c910SKrzysztof Kozlowski 675bccae6eSSangbeom Kim static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, 685bccae6eSSangbeom Kim int rtc_24hr_mode) 695bccae6eSSangbeom Kim { 705bccae6eSSangbeom Kim tm->tm_sec = data[RTC_SEC] & 0x7f; 715bccae6eSSangbeom Kim tm->tm_min = data[RTC_MIN] & 0x7f; 725bccae6eSSangbeom Kim if (rtc_24hr_mode) { 735bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x1f; 745bccae6eSSangbeom Kim } else { 755bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x0f; 765bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM_MASK) 775bccae6eSSangbeom Kim tm->tm_hour += 12; 785bccae6eSSangbeom Kim } 795bccae6eSSangbeom Kim 805bccae6eSSangbeom Kim tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); 815bccae6eSSangbeom Kim tm->tm_mday = data[RTC_DATE] & 0x1f; 825bccae6eSSangbeom Kim tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; 835bccae6eSSangbeom Kim tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; 845bccae6eSSangbeom Kim tm->tm_yday = 0; 855bccae6eSSangbeom Kim tm->tm_isdst = 0; 865bccae6eSSangbeom Kim } 875bccae6eSSangbeom Kim 885bccae6eSSangbeom Kim static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 895bccae6eSSangbeom Kim { 905bccae6eSSangbeom Kim data[RTC_SEC] = tm->tm_sec; 915bccae6eSSangbeom Kim data[RTC_MIN] = tm->tm_min; 925bccae6eSSangbeom Kim 935bccae6eSSangbeom Kim if (tm->tm_hour >= 12) 945bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; 955bccae6eSSangbeom Kim else 965bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; 975bccae6eSSangbeom Kim 985bccae6eSSangbeom Kim data[RTC_WEEKDAY] = 1 << tm->tm_wday; 995bccae6eSSangbeom Kim data[RTC_DATE] = tm->tm_mday; 1005bccae6eSSangbeom Kim data[RTC_MONTH] = tm->tm_mon + 1; 1015bccae6eSSangbeom Kim data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; 1025bccae6eSSangbeom Kim 1035bccae6eSSangbeom Kim if (tm->tm_year < 100) { 1045bccae6eSSangbeom Kim pr_err("s5m8767 RTC cannot handle the year %d.\n", 1055bccae6eSSangbeom Kim 1900 + tm->tm_year); 1065bccae6eSSangbeom Kim return -EINVAL; 1075bccae6eSSangbeom Kim } else { 1085bccae6eSSangbeom Kim return 0; 1095bccae6eSSangbeom Kim } 1105bccae6eSSangbeom Kim } 1115bccae6eSSangbeom Kim 112d73238d4SKrzysztof Kozlowski /* 113d73238d4SKrzysztof Kozlowski * Read RTC_UDR_CON register and wait till UDR field is cleared. 114d73238d4SKrzysztof Kozlowski * This indicates that time/alarm update ended. 115d73238d4SKrzysztof Kozlowski */ 116d73238d4SKrzysztof Kozlowski static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) 117d73238d4SKrzysztof Kozlowski { 118d73238d4SKrzysztof Kozlowski int ret, retry = UDR_READ_RETRY_CNT; 119d73238d4SKrzysztof Kozlowski unsigned int data; 120d73238d4SKrzysztof Kozlowski 121d73238d4SKrzysztof Kozlowski do { 122*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_UDR_CON, &data); 123*602cb5bbSKrzysztof Kozlowski } while (--retry && (data & S5M_RTC_UDR_MASK) && !ret); 124d73238d4SKrzysztof Kozlowski 125d73238d4SKrzysztof Kozlowski if (!retry) 126d73238d4SKrzysztof Kozlowski dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); 127d73238d4SKrzysztof Kozlowski 128d73238d4SKrzysztof Kozlowski return ret; 129d73238d4SKrzysztof Kozlowski } 130d73238d4SKrzysztof Kozlowski 1315bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 1325bccae6eSSangbeom Kim { 1335bccae6eSSangbeom Kim int ret; 1345bccae6eSSangbeom Kim unsigned int data; 1355bccae6eSSangbeom Kim 136*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_UDR_CON, &data); 1375bccae6eSSangbeom Kim if (ret < 0) { 1385bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 1395bccae6eSSangbeom Kim return ret; 1405bccae6eSSangbeom Kim } 1415bccae6eSSangbeom Kim 142*602cb5bbSKrzysztof Kozlowski data |= S5M_RTC_TIME_EN_MASK; 143*602cb5bbSKrzysztof Kozlowski data |= S5M_RTC_UDR_MASK; 1445bccae6eSSangbeom Kim 145*602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_RTC_UDR_CON, data); 1465bccae6eSSangbeom Kim if (ret < 0) { 1475bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 1485bccae6eSSangbeom Kim return ret; 1495bccae6eSSangbeom Kim } 1505bccae6eSSangbeom Kim 151d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 1525bccae6eSSangbeom Kim 1535bccae6eSSangbeom Kim return ret; 1545bccae6eSSangbeom Kim } 1555bccae6eSSangbeom Kim 1565bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 1575bccae6eSSangbeom Kim { 1585bccae6eSSangbeom Kim int ret; 1595bccae6eSSangbeom Kim unsigned int data; 1605bccae6eSSangbeom Kim 161*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_UDR_CON, &data); 1625bccae6eSSangbeom Kim if (ret < 0) { 1635bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 1645bccae6eSSangbeom Kim __func__, ret); 1655bccae6eSSangbeom Kim return ret; 1665bccae6eSSangbeom Kim } 1675bccae6eSSangbeom Kim 168*602cb5bbSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 169*602cb5bbSKrzysztof Kozlowski data |= S5M_RTC_UDR_MASK; 1705bccae6eSSangbeom Kim 171*602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_RTC_UDR_CON, data); 1725bccae6eSSangbeom Kim if (ret < 0) { 1735bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 1745bccae6eSSangbeom Kim __func__, ret); 1755bccae6eSSangbeom Kim return ret; 1765bccae6eSSangbeom Kim } 1775bccae6eSSangbeom Kim 178d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 1795bccae6eSSangbeom Kim 1805bccae6eSSangbeom Kim return ret; 1815bccae6eSSangbeom Kim } 1825bccae6eSSangbeom Kim 1835bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 1845bccae6eSSangbeom Kim { 1855bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 1865bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 1875bccae6eSSangbeom Kim 1885bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 1895bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 1905bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 1915bccae6eSSangbeom Kim tm->tm_hour += 12; 1925bccae6eSSangbeom Kim } else { 1935bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 1945bccae6eSSangbeom Kim } 1955bccae6eSSangbeom Kim 1965bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 1975bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 1985bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 1995bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 2005bccae6eSSangbeom Kim tm->tm_year -= 1900; 2015bccae6eSSangbeom Kim } 2025bccae6eSSangbeom Kim 2035bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 2045bccae6eSSangbeom Kim { 2055bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 2065bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 2075bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 2085bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 2095bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 2105bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 2115bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 2125bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 2135bccae6eSSangbeom Kim } 2145bccae6eSSangbeom Kim 2155bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 2165bccae6eSSangbeom Kim { 2175bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 2185bccae6eSSangbeom Kim u8 data[8]; 2195bccae6eSSangbeom Kim int ret; 2205bccae6eSSangbeom Kim 221*602cb5bbSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, S5M_RTC_SEC, data, 8); 2225bccae6eSSangbeom Kim if (ret < 0) 2235bccae6eSSangbeom Kim return ret; 2245bccae6eSSangbeom Kim 2255bccae6eSSangbeom Kim switch (info->device_type) { 2265bccae6eSSangbeom Kim case S5M8763X: 2275bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 2285bccae6eSSangbeom Kim break; 2295bccae6eSSangbeom Kim 2305bccae6eSSangbeom Kim case S5M8767X: 2315bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 2325bccae6eSSangbeom Kim break; 2335bccae6eSSangbeom Kim 2345bccae6eSSangbeom Kim default: 2355bccae6eSSangbeom Kim return -EINVAL; 2365bccae6eSSangbeom Kim } 2375bccae6eSSangbeom Kim 2385bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 2395bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 2405bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 2415bccae6eSSangbeom Kim 2425bccae6eSSangbeom Kim return rtc_valid_tm(tm); 2435bccae6eSSangbeom Kim } 2445bccae6eSSangbeom Kim 2455bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 2465bccae6eSSangbeom Kim { 2475bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 2485bccae6eSSangbeom Kim u8 data[8]; 2495bccae6eSSangbeom Kim int ret = 0; 2505bccae6eSSangbeom Kim 2515bccae6eSSangbeom Kim switch (info->device_type) { 2525bccae6eSSangbeom Kim case S5M8763X: 2535bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 2545bccae6eSSangbeom Kim break; 2555bccae6eSSangbeom Kim case S5M8767X: 2565bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 2575bccae6eSSangbeom Kim break; 2585bccae6eSSangbeom Kim default: 2595bccae6eSSangbeom Kim return -EINVAL; 2605bccae6eSSangbeom Kim } 2615bccae6eSSangbeom Kim 2625bccae6eSSangbeom Kim if (ret < 0) 2635bccae6eSSangbeom Kim return ret; 2645bccae6eSSangbeom Kim 2655bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 2665bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 2675bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 2685bccae6eSSangbeom Kim 269*602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_RTC_SEC, data, 8); 2705bccae6eSSangbeom Kim if (ret < 0) 2715bccae6eSSangbeom Kim return ret; 2725bccae6eSSangbeom Kim 2735bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 2745bccae6eSSangbeom Kim 2755bccae6eSSangbeom Kim return ret; 2765bccae6eSSangbeom Kim } 2775bccae6eSSangbeom Kim 2785bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 2795bccae6eSSangbeom Kim { 2805bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 2815bccae6eSSangbeom Kim u8 data[8]; 2825bccae6eSSangbeom Kim unsigned int val; 2835bccae6eSSangbeom Kim int ret, i; 2845bccae6eSSangbeom Kim 285*602cb5bbSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, S5M_ALARM0_SEC, data, 8); 2865bccae6eSSangbeom Kim if (ret < 0) 2875bccae6eSSangbeom Kim return ret; 2885bccae6eSSangbeom Kim 2895bccae6eSSangbeom Kim switch (info->device_type) { 2905bccae6eSSangbeom Kim case S5M8763X: 2915bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 292*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 2935bccae6eSSangbeom Kim if (ret < 0) 2945bccae6eSSangbeom Kim return ret; 2955bccae6eSSangbeom Kim 2965bccae6eSSangbeom Kim alrm->enabled = !!val; 2975bccae6eSSangbeom Kim 298*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 2995bccae6eSSangbeom Kim if (ret < 0) 3005bccae6eSSangbeom Kim return ret; 3015bccae6eSSangbeom Kim 3025bccae6eSSangbeom Kim break; 3035bccae6eSSangbeom Kim 3045bccae6eSSangbeom Kim case S5M8767X: 3055bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 3065bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3075bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 3085bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, 3095bccae6eSSangbeom Kim alrm->time.tm_min, alrm->time.tm_sec, 3105bccae6eSSangbeom Kim alrm->time.tm_wday); 3115bccae6eSSangbeom Kim 3125bccae6eSSangbeom Kim alrm->enabled = 0; 3135bccae6eSSangbeom Kim for (i = 0; i < 7; i++) { 3145bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 3155bccae6eSSangbeom Kim alrm->enabled = 1; 3165bccae6eSSangbeom Kim break; 3175bccae6eSSangbeom Kim } 3185bccae6eSSangbeom Kim } 3195bccae6eSSangbeom Kim 3205bccae6eSSangbeom Kim alrm->pending = 0; 321*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 3225bccae6eSSangbeom Kim if (ret < 0) 3235bccae6eSSangbeom Kim return ret; 3245bccae6eSSangbeom Kim break; 3255bccae6eSSangbeom Kim 3265bccae6eSSangbeom Kim default: 3275bccae6eSSangbeom Kim return -EINVAL; 3285bccae6eSSangbeom Kim } 3295bccae6eSSangbeom Kim 330*602cb5bbSKrzysztof Kozlowski if (val & S5M_ALARM0_STATUS) 3315bccae6eSSangbeom Kim alrm->pending = 1; 3325bccae6eSSangbeom Kim else 3335bccae6eSSangbeom Kim alrm->pending = 0; 3345bccae6eSSangbeom Kim 3355bccae6eSSangbeom Kim return 0; 3365bccae6eSSangbeom Kim } 3375bccae6eSSangbeom Kim 3385bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 3395bccae6eSSangbeom Kim { 3405bccae6eSSangbeom Kim u8 data[8]; 3415bccae6eSSangbeom Kim int ret, i; 3425bccae6eSSangbeom Kim struct rtc_time tm; 3435bccae6eSSangbeom Kim 344*602cb5bbSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, S5M_ALARM0_SEC, data, 8); 3455bccae6eSSangbeom Kim if (ret < 0) 3465bccae6eSSangbeom Kim return ret; 3475bccae6eSSangbeom Kim 3485bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 3495bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3505bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 3515bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 3525bccae6eSSangbeom Kim 3535bccae6eSSangbeom Kim switch (info->device_type) { 3545bccae6eSSangbeom Kim case S5M8763X: 355*602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 3565bccae6eSSangbeom Kim break; 3575bccae6eSSangbeom Kim 3585bccae6eSSangbeom Kim case S5M8767X: 3595bccae6eSSangbeom Kim for (i = 0; i < 7; i++) 3605bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 3615bccae6eSSangbeom Kim 362*602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_SEC, data, 8); 3635bccae6eSSangbeom Kim if (ret < 0) 3645bccae6eSSangbeom Kim return ret; 3655bccae6eSSangbeom Kim 3665bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 3675bccae6eSSangbeom Kim 3685bccae6eSSangbeom Kim break; 3695bccae6eSSangbeom Kim 3705bccae6eSSangbeom Kim default: 3715bccae6eSSangbeom Kim return -EINVAL; 3725bccae6eSSangbeom Kim } 3735bccae6eSSangbeom Kim 3745bccae6eSSangbeom Kim return ret; 3755bccae6eSSangbeom Kim } 3765bccae6eSSangbeom Kim 3775bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 3785bccae6eSSangbeom Kim { 3795bccae6eSSangbeom Kim int ret; 3805bccae6eSSangbeom Kim u8 data[8]; 3815bccae6eSSangbeom Kim u8 alarm0_conf; 3825bccae6eSSangbeom Kim struct rtc_time tm; 3835bccae6eSSangbeom Kim 384*602cb5bbSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, S5M_ALARM0_SEC, data, 8); 3855bccae6eSSangbeom Kim if (ret < 0) 3865bccae6eSSangbeom Kim return ret; 3875bccae6eSSangbeom Kim 3885bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 3895bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3905bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 3915bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 3925bccae6eSSangbeom Kim 3935bccae6eSSangbeom Kim switch (info->device_type) { 3945bccae6eSSangbeom Kim case S5M8763X: 3955bccae6eSSangbeom Kim alarm0_conf = 0x77; 396*602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 3975bccae6eSSangbeom Kim break; 3985bccae6eSSangbeom Kim 3995bccae6eSSangbeom Kim case S5M8767X: 4005bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 4015bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 4025bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 4035bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 4045bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 4055bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 4065bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 4075bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 4085bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 4095bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 4105bccae6eSSangbeom Kim 411*602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_SEC, data, 8); 4125bccae6eSSangbeom Kim if (ret < 0) 4135bccae6eSSangbeom Kim return ret; 4145bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 4155bccae6eSSangbeom Kim 4165bccae6eSSangbeom Kim break; 4175bccae6eSSangbeom Kim 4185bccae6eSSangbeom Kim default: 4195bccae6eSSangbeom Kim return -EINVAL; 4205bccae6eSSangbeom Kim } 4215bccae6eSSangbeom Kim 4225bccae6eSSangbeom Kim return ret; 4235bccae6eSSangbeom Kim } 4245bccae6eSSangbeom Kim 4255bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 4265bccae6eSSangbeom Kim { 4275bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 4285bccae6eSSangbeom Kim u8 data[8]; 4295bccae6eSSangbeom Kim int ret; 4305bccae6eSSangbeom Kim 4315bccae6eSSangbeom Kim switch (info->device_type) { 4325bccae6eSSangbeom Kim case S5M8763X: 4335bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 4345bccae6eSSangbeom Kim break; 4355bccae6eSSangbeom Kim 4365bccae6eSSangbeom Kim case S5M8767X: 4375bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 4385bccae6eSSangbeom Kim break; 4395bccae6eSSangbeom Kim 4405bccae6eSSangbeom Kim default: 4415bccae6eSSangbeom Kim return -EINVAL; 4425bccae6eSSangbeom Kim } 4435bccae6eSSangbeom Kim 4445bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4455bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 4465bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, 4475bccae6eSSangbeom Kim alrm->time.tm_sec, alrm->time.tm_wday); 4485bccae6eSSangbeom Kim 4495bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 4505bccae6eSSangbeom Kim if (ret < 0) 4515bccae6eSSangbeom Kim return ret; 4525bccae6eSSangbeom Kim 453*602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_SEC, data, 8); 4545bccae6eSSangbeom Kim if (ret < 0) 4555bccae6eSSangbeom Kim return ret; 4565bccae6eSSangbeom Kim 4575bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 4585bccae6eSSangbeom Kim if (ret < 0) 4595bccae6eSSangbeom Kim return ret; 4605bccae6eSSangbeom Kim 4615bccae6eSSangbeom Kim if (alrm->enabled) 4625bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 4635bccae6eSSangbeom Kim 4645bccae6eSSangbeom Kim return ret; 4655bccae6eSSangbeom Kim } 4665bccae6eSSangbeom Kim 4675bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 4685bccae6eSSangbeom Kim unsigned int enabled) 4695bccae6eSSangbeom Kim { 4705bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 4715bccae6eSSangbeom Kim 4725bccae6eSSangbeom Kim if (enabled) 4735bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 4745bccae6eSSangbeom Kim else 4755bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 4765bccae6eSSangbeom Kim } 4775bccae6eSSangbeom Kim 4785bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 4795bccae6eSSangbeom Kim { 4805bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 4815bccae6eSSangbeom Kim 4825bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 4835bccae6eSSangbeom Kim 4845bccae6eSSangbeom Kim return IRQ_HANDLED; 4855bccae6eSSangbeom Kim } 4865bccae6eSSangbeom Kim 4875bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 4885bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 4895bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 4905bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 4915bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 4925bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 4935bccae6eSSangbeom Kim }; 4945bccae6eSSangbeom Kim 4955bccae6eSSangbeom Kim static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable) 4965bccae6eSSangbeom Kim { 4975bccae6eSSangbeom Kim int ret; 498*602cb5bbSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_WTSR_SMPL_CNTL, 4995bccae6eSSangbeom Kim WTSR_ENABLE_MASK, 5005bccae6eSSangbeom Kim enable ? WTSR_ENABLE_MASK : 0); 5015bccae6eSSangbeom Kim if (ret < 0) 5025bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n", 5035bccae6eSSangbeom Kim __func__, ret); 5045bccae6eSSangbeom Kim } 5055bccae6eSSangbeom Kim 5065bccae6eSSangbeom Kim static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable) 5075bccae6eSSangbeom Kim { 5085bccae6eSSangbeom Kim int ret; 509*602cb5bbSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_WTSR_SMPL_CNTL, 5105bccae6eSSangbeom Kim SMPL_ENABLE_MASK, 5115bccae6eSSangbeom Kim enable ? SMPL_ENABLE_MASK : 0); 5125bccae6eSSangbeom Kim if (ret < 0) 5135bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n", 5145bccae6eSSangbeom Kim __func__, ret); 5155bccae6eSSangbeom Kim } 5165bccae6eSSangbeom Kim 5175bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 5185bccae6eSSangbeom Kim { 5195bccae6eSSangbeom Kim u8 data[2]; 5205bccae6eSSangbeom Kim unsigned int tp_read; 5215bccae6eSSangbeom Kim int ret; 5225bccae6eSSangbeom Kim struct rtc_time tm; 5235bccae6eSSangbeom Kim 524*602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_UDR_CON, &tp_read); 5255bccae6eSSangbeom Kim if (ret < 0) { 5265bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read control reg(%d)\n", 5275bccae6eSSangbeom Kim __func__, ret); 5285bccae6eSSangbeom Kim return ret; 5295bccae6eSSangbeom Kim } 5305bccae6eSSangbeom Kim 5315bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 5325bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 5335bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 5345bccae6eSSangbeom Kim 5355bccae6eSSangbeom Kim info->rtc_24hr_mode = 1; 536*602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 5375bccae6eSSangbeom Kim if (ret < 0) { 5385bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 5395bccae6eSSangbeom Kim __func__, ret); 5405bccae6eSSangbeom Kim return ret; 5415bccae6eSSangbeom Kim } 5425bccae6eSSangbeom Kim 5435bccae6eSSangbeom Kim /* In first boot time, Set rtc time to 1/1/2012 00:00:00(SUN) */ 5445bccae6eSSangbeom Kim if ((tp_read & RTC_TCON_MASK) == 0) { 5455bccae6eSSangbeom Kim dev_dbg(info->dev, "rtc init\n"); 5465bccae6eSSangbeom Kim tm.tm_sec = 0; 5475bccae6eSSangbeom Kim tm.tm_min = 0; 5485bccae6eSSangbeom Kim tm.tm_hour = 0; 5495bccae6eSSangbeom Kim tm.tm_wday = 0; 5505bccae6eSSangbeom Kim tm.tm_mday = 1; 5515bccae6eSSangbeom Kim tm.tm_mon = 0; 5525bccae6eSSangbeom Kim tm.tm_year = 112; 5535bccae6eSSangbeom Kim tm.tm_yday = 0; 5545bccae6eSSangbeom Kim tm.tm_isdst = 0; 5555bccae6eSSangbeom Kim ret = s5m_rtc_set_time(info->dev, &tm); 5565bccae6eSSangbeom Kim } 5575bccae6eSSangbeom Kim 558*602cb5bbSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 5595bccae6eSSangbeom Kim RTC_TCON_MASK, tp_read | RTC_TCON_MASK); 5605bccae6eSSangbeom Kim if (ret < 0) 5615bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to update TCON reg(%d)\n", 5625bccae6eSSangbeom Kim __func__, ret); 5635bccae6eSSangbeom Kim 5645bccae6eSSangbeom Kim return ret; 5655bccae6eSSangbeom Kim } 5665bccae6eSSangbeom Kim 5675bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 5685bccae6eSSangbeom Kim { 5695bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 5705bccae6eSSangbeom Kim struct sec_platform_data *pdata = s5m87xx->pdata; 5715bccae6eSSangbeom Kim struct s5m_rtc_info *info; 572e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 5735bccae6eSSangbeom Kim int ret; 5745bccae6eSSangbeom Kim 5755bccae6eSSangbeom Kim if (!pdata) { 5765bccae6eSSangbeom Kim dev_err(pdev->dev.parent, "Platform data not supplied\n"); 5775bccae6eSSangbeom Kim return -ENODEV; 5785bccae6eSSangbeom Kim } 5795bccae6eSSangbeom Kim 5805bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 5815bccae6eSSangbeom Kim if (!info) 5825bccae6eSSangbeom Kim return -ENOMEM; 5835bccae6eSSangbeom Kim 584e349c910SKrzysztof Kozlowski switch (pdata->device_type) { 585e349c910SKrzysztof Kozlowski case S2MPS14X: 586e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 587e349c910SKrzysztof Kozlowski break; 588e349c910SKrzysztof Kozlowski case S5M8763X: 589e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 590e349c910SKrzysztof Kozlowski break; 591e349c910SKrzysztof Kozlowski case S5M8767X: 592e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 593e349c910SKrzysztof Kozlowski break; 594e349c910SKrzysztof Kozlowski default: 595e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Device type is not supported by RTC driver\n"); 596e349c910SKrzysztof Kozlowski return -ENODEV; 597e349c910SKrzysztof Kozlowski } 598e349c910SKrzysztof Kozlowski 599e349c910SKrzysztof Kozlowski info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); 600e349c910SKrzysztof Kozlowski if (!info->i2c) { 601e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 602e349c910SKrzysztof Kozlowski return -ENODEV; 603e349c910SKrzysztof Kozlowski } 604e349c910SKrzysztof Kozlowski 605e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 606e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 607e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 608e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 609e349c910SKrzysztof Kozlowski ret); 610e349c910SKrzysztof Kozlowski goto err; 611e349c910SKrzysztof Kozlowski } 612e349c910SKrzysztof Kozlowski 6135bccae6eSSangbeom Kim info->dev = &pdev->dev; 6145bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 6155bccae6eSSangbeom Kim info->device_type = s5m87xx->device_type; 6165bccae6eSSangbeom Kim info->wtsr_smpl = s5m87xx->wtsr_smpl; 6175bccae6eSSangbeom Kim 6185bccae6eSSangbeom Kim switch (pdata->device_type) { 6195bccae6eSSangbeom Kim case S5M8763X: 6207b003be8SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, 6217b003be8SKrzysztof Kozlowski S5M8763_IRQ_ALARM0); 6225bccae6eSSangbeom Kim break; 6235bccae6eSSangbeom Kim 6245bccae6eSSangbeom Kim case S5M8767X: 6257b003be8SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, 6267b003be8SKrzysztof Kozlowski S5M8767_IRQ_RTCA1); 6275bccae6eSSangbeom Kim break; 6285bccae6eSSangbeom Kim 6295bccae6eSSangbeom Kim default: 6305bccae6eSSangbeom Kim ret = -EINVAL; 6315bccae6eSSangbeom Kim dev_err(&pdev->dev, "Unsupported device type: %d\n", ret); 632e349c910SKrzysztof Kozlowski goto err; 6335bccae6eSSangbeom Kim } 6345bccae6eSSangbeom Kim 6355bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 6365bccae6eSSangbeom Kim 6375bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 6385bccae6eSSangbeom Kim 6395bccae6eSSangbeom Kim if (info->wtsr_smpl) { 6405bccae6eSSangbeom Kim s5m_rtc_enable_wtsr(info, true); 6415bccae6eSSangbeom Kim s5m_rtc_enable_smpl(info, true); 6425bccae6eSSangbeom Kim } 6435bccae6eSSangbeom Kim 6445bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 6455bccae6eSSangbeom Kim 6465bccae6eSSangbeom Kim info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", 6475bccae6eSSangbeom Kim &s5m_rtc_ops, THIS_MODULE); 6485bccae6eSSangbeom Kim 649e349c910SKrzysztof Kozlowski if (IS_ERR(info->rtc_dev)) { 650e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->rtc_dev); 651e349c910SKrzysztof Kozlowski goto err; 652e349c910SKrzysztof Kozlowski } 6535bccae6eSSangbeom Kim 6545bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 6555bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 6565bccae6eSSangbeom Kim info); 657e349c910SKrzysztof Kozlowski if (ret < 0) { 6585bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 6595bccae6eSSangbeom Kim info->irq, ret); 660e349c910SKrzysztof Kozlowski goto err; 661e349c910SKrzysztof Kozlowski } 662e349c910SKrzysztof Kozlowski 663e349c910SKrzysztof Kozlowski return 0; 664e349c910SKrzysztof Kozlowski 665e349c910SKrzysztof Kozlowski err: 666e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 6675bccae6eSSangbeom Kim 6685bccae6eSSangbeom Kim return ret; 6695bccae6eSSangbeom Kim } 6705bccae6eSSangbeom Kim 6715bccae6eSSangbeom Kim static void s5m_rtc_shutdown(struct platform_device *pdev) 6725bccae6eSSangbeom Kim { 6735bccae6eSSangbeom Kim struct s5m_rtc_info *info = platform_get_drvdata(pdev); 6745bccae6eSSangbeom Kim int i; 6755bccae6eSSangbeom Kim unsigned int val = 0; 6765bccae6eSSangbeom Kim if (info->wtsr_smpl) { 6775bccae6eSSangbeom Kim for (i = 0; i < 3; i++) { 6785bccae6eSSangbeom Kim s5m_rtc_enable_wtsr(info, false); 679*602cb5bbSKrzysztof Kozlowski regmap_read(info->regmap, S5M_WTSR_SMPL_CNTL, &val); 6805bccae6eSSangbeom Kim pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val); 6815bccae6eSSangbeom Kim if (val & WTSR_ENABLE_MASK) 6825bccae6eSSangbeom Kim pr_emerg("%s: fail to disable WTSR\n", 6835bccae6eSSangbeom Kim __func__); 6845bccae6eSSangbeom Kim else { 6855bccae6eSSangbeom Kim pr_info("%s: success to disable WTSR\n", 6865bccae6eSSangbeom Kim __func__); 6875bccae6eSSangbeom Kim break; 6885bccae6eSSangbeom Kim } 6895bccae6eSSangbeom Kim } 6905bccae6eSSangbeom Kim } 6915bccae6eSSangbeom Kim /* Disable SMPL when power off */ 6925bccae6eSSangbeom Kim s5m_rtc_enable_smpl(info, false); 6935bccae6eSSangbeom Kim } 6945bccae6eSSangbeom Kim 695e349c910SKrzysztof Kozlowski static int s5m_rtc_remove(struct platform_device *pdev) 696e349c910SKrzysztof Kozlowski { 697e349c910SKrzysztof Kozlowski struct s5m_rtc_info *info = platform_get_drvdata(pdev); 698e349c910SKrzysztof Kozlowski 699e349c910SKrzysztof Kozlowski /* Perform also all shutdown steps when removing */ 700e349c910SKrzysztof Kozlowski s5m_rtc_shutdown(pdev); 701e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 702e349c910SKrzysztof Kozlowski 703e349c910SKrzysztof Kozlowski return 0; 704e349c910SKrzysztof Kozlowski } 705e349c910SKrzysztof Kozlowski 70611ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 707222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 708222ead7fSKrzysztof Kozlowski { 709222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 710222ead7fSKrzysztof Kozlowski int ret = 0; 711222ead7fSKrzysztof Kozlowski 712222ead7fSKrzysztof Kozlowski if (device_may_wakeup(dev)) 713222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 714222ead7fSKrzysztof Kozlowski 715222ead7fSKrzysztof Kozlowski return ret; 716222ead7fSKrzysztof Kozlowski } 717222ead7fSKrzysztof Kozlowski 718222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(struct device *dev) 719222ead7fSKrzysztof Kozlowski { 720222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 721222ead7fSKrzysztof Kozlowski int ret = 0; 722222ead7fSKrzysztof Kozlowski 723222ead7fSKrzysztof Kozlowski if (device_may_wakeup(dev)) 724222ead7fSKrzysztof Kozlowski ret = enable_irq_wake(info->irq); 725222ead7fSKrzysztof Kozlowski 726222ead7fSKrzysztof Kozlowski return ret; 727222ead7fSKrzysztof Kozlowski } 72811ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 729222ead7fSKrzysztof Kozlowski 730222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 731222ead7fSKrzysztof Kozlowski 7325bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 7335bccae6eSSangbeom Kim { "s5m-rtc", 0 }, 7345bccae6eSSangbeom Kim }; 7355bccae6eSSangbeom Kim 7365bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 7375bccae6eSSangbeom Kim .driver = { 7385bccae6eSSangbeom Kim .name = "s5m-rtc", 7395bccae6eSSangbeom Kim .owner = THIS_MODULE, 740222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 7415bccae6eSSangbeom Kim }, 7425bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 743e349c910SKrzysztof Kozlowski .remove = s5m_rtc_remove, 7445bccae6eSSangbeom Kim .shutdown = s5m_rtc_shutdown, 7455bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 7465bccae6eSSangbeom Kim }; 7475bccae6eSSangbeom Kim 7485bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 7495bccae6eSSangbeom Kim 7505bccae6eSSangbeom Kim /* Module information */ 7515bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 7525bccae6eSSangbeom Kim MODULE_DESCRIPTION("Samsung S5M RTC driver"); 7535bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 7545bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 755