15bccae6eSSangbeom Kim /* 2f8b23bbdSKrzysztof Kozlowski * Copyright (c) 2013-2014 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 18a737e835SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 19a737e835SJoe Perches 205bccae6eSSangbeom Kim #include <linux/module.h> 215bccae6eSSangbeom Kim #include <linux/i2c.h> 225bccae6eSSangbeom Kim #include <linux/bcd.h> 235bccae6eSSangbeom Kim #include <linux/regmap.h> 245bccae6eSSangbeom Kim #include <linux/rtc.h> 255bccae6eSSangbeom Kim #include <linux/platform_device.h> 265bccae6eSSangbeom Kim #include <linux/mfd/samsung/core.h> 275bccae6eSSangbeom Kim #include <linux/mfd/samsung/irq.h> 285bccae6eSSangbeom Kim #include <linux/mfd/samsung/rtc.h> 290c5deb1eSKrzysztof Kozlowski #include <linux/mfd/samsung/s2mps14.h> 305bccae6eSSangbeom Kim 31d73238d4SKrzysztof Kozlowski /* 32d73238d4SKrzysztof Kozlowski * Maximum number of retries for checking changes in UDR field 33602cb5bbSKrzysztof 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 36602cb5bbSKrzysztof 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 41f8b23bbdSKrzysztof Kozlowski /* Registers used by the driver which are different between chipsets. */ 42f8b23bbdSKrzysztof Kozlowski struct s5m_rtc_reg_config { 43f8b23bbdSKrzysztof Kozlowski /* Number of registers used for setting time/alarm0/alarm1 */ 44f8b23bbdSKrzysztof Kozlowski unsigned int regs_count; 45f8b23bbdSKrzysztof Kozlowski /* First register for time, seconds */ 46f8b23bbdSKrzysztof Kozlowski unsigned int time; 47f8b23bbdSKrzysztof Kozlowski /* RTC control register */ 48f8b23bbdSKrzysztof Kozlowski unsigned int ctrl; 49f8b23bbdSKrzysztof Kozlowski /* First register for alarm 0, seconds */ 50f8b23bbdSKrzysztof Kozlowski unsigned int alarm0; 51f8b23bbdSKrzysztof Kozlowski /* First register for alarm 1, seconds */ 52f8b23bbdSKrzysztof Kozlowski unsigned int alarm1; 53f8b23bbdSKrzysztof Kozlowski /* 54f8b23bbdSKrzysztof Kozlowski * Register for update flag (UDR). Typically setting UDR field to 1 55f8b23bbdSKrzysztof Kozlowski * will enable update of time or alarm register. Then it will be 56f8b23bbdSKrzysztof Kozlowski * auto-cleared after successful update. 57f8b23bbdSKrzysztof Kozlowski */ 58f8b23bbdSKrzysztof Kozlowski unsigned int rtc_udr_update; 59f8b23bbdSKrzysztof Kozlowski /* Mask for UDR field in 'rtc_udr_update' register */ 60f8b23bbdSKrzysztof Kozlowski unsigned int rtc_udr_mask; 61f8b23bbdSKrzysztof Kozlowski }; 62f8b23bbdSKrzysztof Kozlowski 63f8b23bbdSKrzysztof Kozlowski /* Register map for S5M8763 and S5M8767 */ 64f8b23bbdSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s5m_rtc_regs = { 65f8b23bbdSKrzysztof Kozlowski .regs_count = 8, 66f8b23bbdSKrzysztof Kozlowski .time = S5M_RTC_SEC, 67f8b23bbdSKrzysztof Kozlowski .ctrl = S5M_ALARM1_CONF, 68f8b23bbdSKrzysztof Kozlowski .alarm0 = S5M_ALARM0_SEC, 69f8b23bbdSKrzysztof Kozlowski .alarm1 = S5M_ALARM1_SEC, 70f8b23bbdSKrzysztof Kozlowski .rtc_udr_update = S5M_RTC_UDR_CON, 71f8b23bbdSKrzysztof Kozlowski .rtc_udr_mask = S5M_RTC_UDR_MASK, 72f8b23bbdSKrzysztof Kozlowski }; 73f8b23bbdSKrzysztof Kozlowski 740c5deb1eSKrzysztof Kozlowski /* 750c5deb1eSKrzysztof Kozlowski * Register map for S2MPS14. 760c5deb1eSKrzysztof Kozlowski * It may be also suitable for S2MPS11 but this was not tested. 770c5deb1eSKrzysztof Kozlowski */ 780c5deb1eSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps_rtc_regs = { 790c5deb1eSKrzysztof Kozlowski .regs_count = 7, 800c5deb1eSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 810c5deb1eSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 820c5deb1eSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 830c5deb1eSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 840c5deb1eSKrzysztof Kozlowski .rtc_udr_update = S2MPS_RTC_UDR_CON, 850c5deb1eSKrzysztof Kozlowski .rtc_udr_mask = S2MPS_RTC_WUDR_MASK, 860c5deb1eSKrzysztof Kozlowski }; 870c5deb1eSKrzysztof Kozlowski 885bccae6eSSangbeom Kim struct s5m_rtc_info { 895bccae6eSSangbeom Kim struct device *dev; 90e349c910SKrzysztof Kozlowski struct i2c_client *i2c; 915bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx; 925ccb7d71SGeert Uytterhoeven struct regmap *regmap; 935bccae6eSSangbeom Kim struct rtc_device *rtc_dev; 945bccae6eSSangbeom Kim int irq; 95*94f91922SKrzysztof Kozlowski enum sec_device_type device_type; 965bccae6eSSangbeom Kim int rtc_24hr_mode; 97f8b23bbdSKrzysztof Kozlowski const struct s5m_rtc_reg_config *regs; 985bccae6eSSangbeom Kim }; 995bccae6eSSangbeom Kim 100e349c910SKrzysztof Kozlowski static const struct regmap_config s5m_rtc_regmap_config = { 101e349c910SKrzysztof Kozlowski .reg_bits = 8, 102e349c910SKrzysztof Kozlowski .val_bits = 8, 103e349c910SKrzysztof Kozlowski 104602cb5bbSKrzysztof Kozlowski .max_register = S5M_RTC_REG_MAX, 105e349c910SKrzysztof Kozlowski }; 106e349c910SKrzysztof Kozlowski 107e349c910SKrzysztof Kozlowski static const struct regmap_config s2mps14_rtc_regmap_config = { 108e349c910SKrzysztof Kozlowski .reg_bits = 8, 109e349c910SKrzysztof Kozlowski .val_bits = 8, 110e349c910SKrzysztof Kozlowski 111e349c910SKrzysztof Kozlowski .max_register = S2MPS_RTC_REG_MAX, 112e349c910SKrzysztof Kozlowski }; 113e349c910SKrzysztof Kozlowski 1145bccae6eSSangbeom Kim static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, 1155bccae6eSSangbeom Kim int rtc_24hr_mode) 1165bccae6eSSangbeom Kim { 1175bccae6eSSangbeom Kim tm->tm_sec = data[RTC_SEC] & 0x7f; 1185bccae6eSSangbeom Kim tm->tm_min = data[RTC_MIN] & 0x7f; 1195bccae6eSSangbeom Kim if (rtc_24hr_mode) { 1205bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x1f; 1215bccae6eSSangbeom Kim } else { 1225bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x0f; 1235bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM_MASK) 1245bccae6eSSangbeom Kim tm->tm_hour += 12; 1255bccae6eSSangbeom Kim } 1265bccae6eSSangbeom Kim 1275bccae6eSSangbeom Kim tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); 1285bccae6eSSangbeom Kim tm->tm_mday = data[RTC_DATE] & 0x1f; 1295bccae6eSSangbeom Kim tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; 1305bccae6eSSangbeom Kim tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; 1315bccae6eSSangbeom Kim tm->tm_yday = 0; 1325bccae6eSSangbeom Kim tm->tm_isdst = 0; 1335bccae6eSSangbeom Kim } 1345bccae6eSSangbeom Kim 1355bccae6eSSangbeom Kim static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 1365bccae6eSSangbeom Kim { 1375bccae6eSSangbeom Kim data[RTC_SEC] = tm->tm_sec; 1385bccae6eSSangbeom Kim data[RTC_MIN] = tm->tm_min; 1395bccae6eSSangbeom Kim 1405bccae6eSSangbeom Kim if (tm->tm_hour >= 12) 1415bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; 1425bccae6eSSangbeom Kim else 1435bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; 1445bccae6eSSangbeom Kim 1455bccae6eSSangbeom Kim data[RTC_WEEKDAY] = 1 << tm->tm_wday; 1465bccae6eSSangbeom Kim data[RTC_DATE] = tm->tm_mday; 1475bccae6eSSangbeom Kim data[RTC_MONTH] = tm->tm_mon + 1; 1485bccae6eSSangbeom Kim data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; 1495bccae6eSSangbeom Kim 1505bccae6eSSangbeom Kim if (tm->tm_year < 100) { 151a737e835SJoe Perches pr_err("RTC cannot handle the year %d\n", 1525bccae6eSSangbeom Kim 1900 + tm->tm_year); 1535bccae6eSSangbeom Kim return -EINVAL; 1545bccae6eSSangbeom Kim } else { 1555bccae6eSSangbeom Kim return 0; 1565bccae6eSSangbeom Kim } 1575bccae6eSSangbeom Kim } 1585bccae6eSSangbeom Kim 159d73238d4SKrzysztof Kozlowski /* 160d73238d4SKrzysztof Kozlowski * Read RTC_UDR_CON register and wait till UDR field is cleared. 161d73238d4SKrzysztof Kozlowski * This indicates that time/alarm update ended. 162d73238d4SKrzysztof Kozlowski */ 163d73238d4SKrzysztof Kozlowski static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) 164d73238d4SKrzysztof Kozlowski { 165d73238d4SKrzysztof Kozlowski int ret, retry = UDR_READ_RETRY_CNT; 166d73238d4SKrzysztof Kozlowski unsigned int data; 167d73238d4SKrzysztof Kozlowski 168d73238d4SKrzysztof Kozlowski do { 169f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, 170f8b23bbdSKrzysztof Kozlowski &data); 171f8b23bbdSKrzysztof Kozlowski } while (--retry && (data & info->regs->rtc_udr_mask) && !ret); 172d73238d4SKrzysztof Kozlowski 173d73238d4SKrzysztof Kozlowski if (!retry) 174d73238d4SKrzysztof Kozlowski dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); 175d73238d4SKrzysztof Kozlowski 176d73238d4SKrzysztof Kozlowski return ret; 177d73238d4SKrzysztof Kozlowski } 178d73238d4SKrzysztof Kozlowski 179f8b23bbdSKrzysztof Kozlowski static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, 180f8b23bbdSKrzysztof Kozlowski struct rtc_wkalrm *alarm) 181f8b23bbdSKrzysztof Kozlowski { 182f8b23bbdSKrzysztof Kozlowski int ret; 183f8b23bbdSKrzysztof Kozlowski unsigned int val; 184f8b23bbdSKrzysztof Kozlowski 185f8b23bbdSKrzysztof Kozlowski switch (info->device_type) { 186f8b23bbdSKrzysztof Kozlowski case S5M8767X: 187f8b23bbdSKrzysztof Kozlowski case S5M8763X: 188f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 189f8b23bbdSKrzysztof Kozlowski val &= S5M_ALARM0_STATUS; 190f8b23bbdSKrzysztof Kozlowski break; 1910c5deb1eSKrzysztof Kozlowski case S2MPS14X: 1925281f94aSKrzysztof Kozlowski case S2MPS13X: 1930c5deb1eSKrzysztof Kozlowski ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, 1940c5deb1eSKrzysztof Kozlowski &val); 1950c5deb1eSKrzysztof Kozlowski val &= S2MPS_ALARM0_STATUS; 1960c5deb1eSKrzysztof Kozlowski break; 197f8b23bbdSKrzysztof Kozlowski default: 198f8b23bbdSKrzysztof Kozlowski return -EINVAL; 199f8b23bbdSKrzysztof Kozlowski } 200f8b23bbdSKrzysztof Kozlowski if (ret < 0) 201f8b23bbdSKrzysztof Kozlowski return ret; 202f8b23bbdSKrzysztof Kozlowski 203f8b23bbdSKrzysztof Kozlowski if (val) 204f8b23bbdSKrzysztof Kozlowski alarm->pending = 1; 205f8b23bbdSKrzysztof Kozlowski else 206f8b23bbdSKrzysztof Kozlowski alarm->pending = 0; 207f8b23bbdSKrzysztof Kozlowski 208f8b23bbdSKrzysztof Kozlowski return 0; 209f8b23bbdSKrzysztof Kozlowski } 210f8b23bbdSKrzysztof Kozlowski 2115bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 2125bccae6eSSangbeom Kim { 2135bccae6eSSangbeom Kim int ret; 2145bccae6eSSangbeom Kim unsigned int data; 2155bccae6eSSangbeom Kim 216f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); 2175bccae6eSSangbeom Kim if (ret < 0) { 2185bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 2195bccae6eSSangbeom Kim return ret; 2205bccae6eSSangbeom Kim } 2215bccae6eSSangbeom Kim 222f8b23bbdSKrzysztof Kozlowski data |= info->regs->rtc_udr_mask; 2230c5deb1eSKrzysztof Kozlowski if (info->device_type == S5M8763X || info->device_type == S5M8767X) 2240c5deb1eSKrzysztof Kozlowski data |= S5M_RTC_TIME_EN_MASK; 2255bccae6eSSangbeom Kim 226f8b23bbdSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); 2275bccae6eSSangbeom Kim if (ret < 0) { 2285bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 2295bccae6eSSangbeom Kim return ret; 2305bccae6eSSangbeom Kim } 2315bccae6eSSangbeom Kim 232d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2335bccae6eSSangbeom Kim 2345bccae6eSSangbeom Kim return ret; 2355bccae6eSSangbeom Kim } 2365bccae6eSSangbeom Kim 2375bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 2385bccae6eSSangbeom Kim { 2395bccae6eSSangbeom Kim int ret; 2405bccae6eSSangbeom Kim unsigned int data; 2415bccae6eSSangbeom Kim 242f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); 2435bccae6eSSangbeom Kim if (ret < 0) { 2445bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 2455bccae6eSSangbeom Kim __func__, ret); 2465bccae6eSSangbeom Kim return ret; 2475bccae6eSSangbeom Kim } 2485bccae6eSSangbeom Kim 249f8b23bbdSKrzysztof Kozlowski data |= info->regs->rtc_udr_mask; 2500c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 2510c5deb1eSKrzysztof Kozlowski case S5M8763X: 2520c5deb1eSKrzysztof Kozlowski case S5M8767X: 2530c5deb1eSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 2540c5deb1eSKrzysztof Kozlowski break; 2550c5deb1eSKrzysztof Kozlowski case S2MPS14X: 2560c5deb1eSKrzysztof Kozlowski data |= S2MPS_RTC_RUDR_MASK; 2570c5deb1eSKrzysztof Kozlowski break; 2585281f94aSKrzysztof Kozlowski case S2MPS13X: 2595281f94aSKrzysztof Kozlowski data |= S2MPS13_RTC_AUDR_MASK; 2605281f94aSKrzysztof Kozlowski break; 2610c5deb1eSKrzysztof Kozlowski default: 2620c5deb1eSKrzysztof Kozlowski return -EINVAL; 2630c5deb1eSKrzysztof Kozlowski } 2645bccae6eSSangbeom Kim 265f8b23bbdSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); 2665bccae6eSSangbeom Kim if (ret < 0) { 2675bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 2685bccae6eSSangbeom Kim __func__, ret); 2695bccae6eSSangbeom Kim return ret; 2705bccae6eSSangbeom Kim } 2715bccae6eSSangbeom Kim 272d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2735bccae6eSSangbeom Kim 2745281f94aSKrzysztof Kozlowski /* On S2MPS13 the AUDR is not auto-cleared */ 2755281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS13X) 2765281f94aSKrzysztof Kozlowski regmap_update_bits(info->regmap, info->regs->rtc_udr_update, 2775281f94aSKrzysztof Kozlowski S2MPS13_RTC_AUDR_MASK, 0); 2785281f94aSKrzysztof Kozlowski 2795bccae6eSSangbeom Kim return ret; 2805bccae6eSSangbeom Kim } 2815bccae6eSSangbeom Kim 2825bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 2835bccae6eSSangbeom Kim { 2845bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 2855bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 2865bccae6eSSangbeom Kim 2875bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 2885bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 2895bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 2905bccae6eSSangbeom Kim tm->tm_hour += 12; 2915bccae6eSSangbeom Kim } else { 2925bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 2935bccae6eSSangbeom Kim } 2945bccae6eSSangbeom Kim 2955bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 2965bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 2975bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 2985bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 2995bccae6eSSangbeom Kim tm->tm_year -= 1900; 3005bccae6eSSangbeom Kim } 3015bccae6eSSangbeom Kim 3025bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 3035bccae6eSSangbeom Kim { 3045bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 3055bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 3065bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 3075bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 3085bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 3095bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 3105bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 3115bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 3125bccae6eSSangbeom Kim } 3135bccae6eSSangbeom Kim 3145bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 3155bccae6eSSangbeom Kim { 3165bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 317f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3185bccae6eSSangbeom Kim int ret; 3195bccae6eSSangbeom Kim 3205281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) { 3210c5deb1eSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, 3220c5deb1eSKrzysztof Kozlowski info->regs->rtc_udr_update, 3230c5deb1eSKrzysztof Kozlowski S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK); 3240c5deb1eSKrzysztof Kozlowski if (ret) { 3250c5deb1eSKrzysztof Kozlowski dev_err(dev, 3260c5deb1eSKrzysztof Kozlowski "Failed to prepare registers for time reading: %d\n", 3270c5deb1eSKrzysztof Kozlowski ret); 3280c5deb1eSKrzysztof Kozlowski return ret; 3290c5deb1eSKrzysztof Kozlowski } 3300c5deb1eSKrzysztof Kozlowski } 331f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->time, data, 332f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3335bccae6eSSangbeom Kim if (ret < 0) 3345bccae6eSSangbeom Kim return ret; 3355bccae6eSSangbeom Kim 3365bccae6eSSangbeom Kim switch (info->device_type) { 3375bccae6eSSangbeom Kim case S5M8763X: 3385bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 3395bccae6eSSangbeom Kim break; 3405bccae6eSSangbeom Kim 3415bccae6eSSangbeom Kim case S5M8767X: 3420c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3435281f94aSKrzysztof Kozlowski case S2MPS13X: 3445bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 3455bccae6eSSangbeom Kim break; 3465bccae6eSSangbeom Kim 3475bccae6eSSangbeom Kim default: 3485bccae6eSSangbeom Kim return -EINVAL; 3495bccae6eSSangbeom Kim } 3505bccae6eSSangbeom Kim 3515bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3525bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 3535bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 3545bccae6eSSangbeom Kim 3555bccae6eSSangbeom Kim return rtc_valid_tm(tm); 3565bccae6eSSangbeom Kim } 3575bccae6eSSangbeom Kim 3585bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 3595bccae6eSSangbeom Kim { 3605bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 361f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3625bccae6eSSangbeom Kim int ret = 0; 3635bccae6eSSangbeom Kim 3645bccae6eSSangbeom Kim switch (info->device_type) { 3655bccae6eSSangbeom Kim case S5M8763X: 3665bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 3675bccae6eSSangbeom Kim break; 3685bccae6eSSangbeom Kim case S5M8767X: 3690c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3705281f94aSKrzysztof Kozlowski case S2MPS13X: 3715bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 3725bccae6eSSangbeom Kim break; 3735bccae6eSSangbeom Kim default: 3745bccae6eSSangbeom Kim return -EINVAL; 3755bccae6eSSangbeom Kim } 3765bccae6eSSangbeom Kim 3775bccae6eSSangbeom Kim if (ret < 0) 3785bccae6eSSangbeom Kim return ret; 3795bccae6eSSangbeom Kim 3805bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3815bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 3825bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 3835bccae6eSSangbeom Kim 384f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->time, data, 385f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3865bccae6eSSangbeom Kim if (ret < 0) 3875bccae6eSSangbeom Kim return ret; 3885bccae6eSSangbeom Kim 3895bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 3905bccae6eSSangbeom Kim 3915bccae6eSSangbeom Kim return ret; 3925bccae6eSSangbeom Kim } 3935bccae6eSSangbeom Kim 3945bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 3955bccae6eSSangbeom Kim { 3965bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 397f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3985bccae6eSSangbeom Kim unsigned int val; 3995bccae6eSSangbeom Kim int ret, i; 4005bccae6eSSangbeom Kim 401f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 402f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4035bccae6eSSangbeom Kim if (ret < 0) 4045bccae6eSSangbeom Kim return ret; 4055bccae6eSSangbeom Kim 4065bccae6eSSangbeom Kim switch (info->device_type) { 4075bccae6eSSangbeom Kim case S5M8763X: 4085bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 409602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 4105bccae6eSSangbeom Kim if (ret < 0) 4115bccae6eSSangbeom Kim return ret; 4125bccae6eSSangbeom Kim 4135bccae6eSSangbeom Kim alrm->enabled = !!val; 4145bccae6eSSangbeom Kim break; 4155bccae6eSSangbeom Kim 4165bccae6eSSangbeom Kim case S5M8767X: 4170c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4185281f94aSKrzysztof Kozlowski case S2MPS13X: 4195bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 4205bccae6eSSangbeom Kim alrm->enabled = 0; 421f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) { 4225bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 4235bccae6eSSangbeom Kim alrm->enabled = 1; 4245bccae6eSSangbeom Kim break; 4255bccae6eSSangbeom Kim } 4265bccae6eSSangbeom Kim } 4275bccae6eSSangbeom Kim break; 4285bccae6eSSangbeom Kim 4295bccae6eSSangbeom Kim default: 4305bccae6eSSangbeom Kim return -EINVAL; 4315bccae6eSSangbeom Kim } 4325bccae6eSSangbeom Kim 433f8b23bbdSKrzysztof Kozlowski dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 434f8b23bbdSKrzysztof Kozlowski 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 435f8b23bbdSKrzysztof Kozlowski alrm->time.tm_mday, alrm->time.tm_hour, 436f8b23bbdSKrzysztof Kozlowski alrm->time.tm_min, alrm->time.tm_sec, 437f8b23bbdSKrzysztof Kozlowski alrm->time.tm_wday); 438f8b23bbdSKrzysztof Kozlowski 439f8b23bbdSKrzysztof Kozlowski ret = s5m_check_peding_alarm_interrupt(info, alrm); 4405bccae6eSSangbeom Kim 4415bccae6eSSangbeom Kim return 0; 4425bccae6eSSangbeom Kim } 4435bccae6eSSangbeom Kim 4445bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 4455bccae6eSSangbeom Kim { 446f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4475bccae6eSSangbeom Kim int ret, i; 4485bccae6eSSangbeom Kim struct rtc_time tm; 4495bccae6eSSangbeom Kim 450f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 451f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4525bccae6eSSangbeom Kim if (ret < 0) 4535bccae6eSSangbeom Kim return ret; 4545bccae6eSSangbeom Kim 4555bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 4565bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4575bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 4585bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 4595bccae6eSSangbeom Kim 4605bccae6eSSangbeom Kim switch (info->device_type) { 4615bccae6eSSangbeom Kim case S5M8763X: 462602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 4635bccae6eSSangbeom Kim break; 4645bccae6eSSangbeom Kim 4655bccae6eSSangbeom Kim case S5M8767X: 4660c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4675281f94aSKrzysztof Kozlowski case S2MPS13X: 468f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) 4695bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 4705bccae6eSSangbeom Kim 471f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 472f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4735bccae6eSSangbeom Kim if (ret < 0) 4745bccae6eSSangbeom Kim return ret; 4755bccae6eSSangbeom Kim 4765bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 4775bccae6eSSangbeom Kim 4785bccae6eSSangbeom Kim break; 4795bccae6eSSangbeom Kim 4805bccae6eSSangbeom Kim default: 4815bccae6eSSangbeom Kim return -EINVAL; 4825bccae6eSSangbeom Kim } 4835bccae6eSSangbeom Kim 4845bccae6eSSangbeom Kim return ret; 4855bccae6eSSangbeom Kim } 4865bccae6eSSangbeom Kim 4875bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 4885bccae6eSSangbeom Kim { 4895bccae6eSSangbeom Kim int ret; 490f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4915bccae6eSSangbeom Kim u8 alarm0_conf; 4925bccae6eSSangbeom Kim struct rtc_time tm; 4935bccae6eSSangbeom Kim 494f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 495f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4965bccae6eSSangbeom Kim if (ret < 0) 4975bccae6eSSangbeom Kim return ret; 4985bccae6eSSangbeom Kim 4995bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5005bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5015bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 5025bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 5035bccae6eSSangbeom Kim 5045bccae6eSSangbeom Kim switch (info->device_type) { 5055bccae6eSSangbeom Kim case S5M8763X: 5065bccae6eSSangbeom Kim alarm0_conf = 0x77; 507602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 5085bccae6eSSangbeom Kim break; 5095bccae6eSSangbeom Kim 5105bccae6eSSangbeom Kim case S5M8767X: 5110c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5125281f94aSKrzysztof Kozlowski case S2MPS13X: 5135bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 5145bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 5155bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 5165bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 5175bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 5185bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 5195bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 5205bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 5215bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 5225bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 5235bccae6eSSangbeom Kim 524f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 525f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5265bccae6eSSangbeom Kim if (ret < 0) 5275bccae6eSSangbeom Kim return ret; 5285bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5295bccae6eSSangbeom Kim 5305bccae6eSSangbeom Kim break; 5315bccae6eSSangbeom Kim 5325bccae6eSSangbeom Kim default: 5335bccae6eSSangbeom Kim return -EINVAL; 5345bccae6eSSangbeom Kim } 5355bccae6eSSangbeom Kim 5365bccae6eSSangbeom Kim return ret; 5375bccae6eSSangbeom Kim } 5385bccae6eSSangbeom Kim 5395bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 5405bccae6eSSangbeom Kim { 5415bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 542f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5435bccae6eSSangbeom Kim int ret; 5445bccae6eSSangbeom Kim 5455bccae6eSSangbeom Kim switch (info->device_type) { 5465bccae6eSSangbeom Kim case S5M8763X: 5475bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 5485bccae6eSSangbeom Kim break; 5495bccae6eSSangbeom Kim 5505bccae6eSSangbeom Kim case S5M8767X: 5510c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5525281f94aSKrzysztof Kozlowski case S2MPS13X: 5535bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 5545bccae6eSSangbeom Kim break; 5555bccae6eSSangbeom Kim 5565bccae6eSSangbeom Kim default: 5575bccae6eSSangbeom Kim return -EINVAL; 5585bccae6eSSangbeom Kim } 5595bccae6eSSangbeom Kim 5605bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5615bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 5625bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, 5635bccae6eSSangbeom Kim alrm->time.tm_sec, alrm->time.tm_wday); 5645bccae6eSSangbeom Kim 5655bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 5665bccae6eSSangbeom Kim if (ret < 0) 5675bccae6eSSangbeom Kim return ret; 5685bccae6eSSangbeom Kim 569f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 570f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5715bccae6eSSangbeom Kim if (ret < 0) 5725bccae6eSSangbeom Kim return ret; 5735bccae6eSSangbeom Kim 5745bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5755bccae6eSSangbeom Kim if (ret < 0) 5765bccae6eSSangbeom Kim return ret; 5775bccae6eSSangbeom Kim 5785bccae6eSSangbeom Kim if (alrm->enabled) 5795bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 5805bccae6eSSangbeom Kim 5815bccae6eSSangbeom Kim return ret; 5825bccae6eSSangbeom Kim } 5835bccae6eSSangbeom Kim 5845bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 5855bccae6eSSangbeom Kim unsigned int enabled) 5865bccae6eSSangbeom Kim { 5875bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 5885bccae6eSSangbeom Kim 5895bccae6eSSangbeom Kim if (enabled) 5905bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 5915bccae6eSSangbeom Kim else 5925bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 5935bccae6eSSangbeom Kim } 5945bccae6eSSangbeom Kim 5955bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 5965bccae6eSSangbeom Kim { 5975bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 5985bccae6eSSangbeom Kim 5995bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 6005bccae6eSSangbeom Kim 6015bccae6eSSangbeom Kim return IRQ_HANDLED; 6025bccae6eSSangbeom Kim } 6035bccae6eSSangbeom Kim 6045bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 6055bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 6065bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 6075bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 6085bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 6095bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 6105bccae6eSSangbeom Kim }; 6115bccae6eSSangbeom Kim 6125bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 6135bccae6eSSangbeom Kim { 6145bccae6eSSangbeom Kim u8 data[2]; 6155bccae6eSSangbeom Kim int ret; 6165bccae6eSSangbeom Kim 6170c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 6180c5deb1eSKrzysztof Kozlowski case S5M8763X: 6190c5deb1eSKrzysztof Kozlowski case S5M8767X: 6200c5f5d9aSKrzysztof Kozlowski /* UDR update time. Default of 7.32 ms is too long. */ 6210c5f5d9aSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 6220c5f5d9aSKrzysztof Kozlowski S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); 6230c5f5d9aSKrzysztof Kozlowski if (ret < 0) 6240c5f5d9aSKrzysztof Kozlowski dev_err(info->dev, "%s: fail to change UDR time: %d\n", 6250c5f5d9aSKrzysztof Kozlowski __func__, ret); 6260c5f5d9aSKrzysztof Kozlowski 6275bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 6285bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6295bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6305bccae6eSSangbeom Kim 631602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 6320c5deb1eSKrzysztof Kozlowski break; 6330c5deb1eSKrzysztof Kozlowski 6340c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6355281f94aSKrzysztof Kozlowski case S2MPS13X: 6360c5deb1eSKrzysztof Kozlowski data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6370c5deb1eSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); 6380c5deb1eSKrzysztof Kozlowski break; 6390c5deb1eSKrzysztof Kozlowski 6400c5deb1eSKrzysztof Kozlowski default: 6410c5deb1eSKrzysztof Kozlowski return -EINVAL; 6420c5deb1eSKrzysztof Kozlowski } 6430c5deb1eSKrzysztof Kozlowski 6440c5deb1eSKrzysztof Kozlowski info->rtc_24hr_mode = 1; 6455bccae6eSSangbeom Kim if (ret < 0) { 6465bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 6475bccae6eSSangbeom Kim __func__, ret); 6485bccae6eSSangbeom Kim return ret; 6495bccae6eSSangbeom Kim } 6505bccae6eSSangbeom Kim 6515bccae6eSSangbeom Kim return ret; 6525bccae6eSSangbeom Kim } 6535bccae6eSSangbeom Kim 6545bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 6555bccae6eSSangbeom Kim { 6565bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 6575bccae6eSSangbeom Kim struct sec_platform_data *pdata = s5m87xx->pdata; 6585bccae6eSSangbeom Kim struct s5m_rtc_info *info; 659e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 660a0347f20SKrzysztof Kozlowski int ret, alarm_irq; 6615bccae6eSSangbeom Kim 6625bccae6eSSangbeom Kim if (!pdata) { 6635bccae6eSSangbeom Kim dev_err(pdev->dev.parent, "Platform data not supplied\n"); 6645bccae6eSSangbeom Kim return -ENODEV; 6655bccae6eSSangbeom Kim } 6665bccae6eSSangbeom Kim 6675bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 6685bccae6eSSangbeom Kim if (!info) 6695bccae6eSSangbeom Kim return -ENOMEM; 6705bccae6eSSangbeom Kim 671*94f91922SKrzysztof Kozlowski switch (platform_get_device_id(pdev)->driver_data) { 672e349c910SKrzysztof Kozlowski case S2MPS14X: 6735281f94aSKrzysztof Kozlowski case S2MPS13X: 674e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 6750c5deb1eSKrzysztof Kozlowski info->regs = &s2mps_rtc_regs; 676a0347f20SKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 677e349c910SKrzysztof Kozlowski break; 678e349c910SKrzysztof Kozlowski case S5M8763X: 679e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 680f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 681a0347f20SKrzysztof Kozlowski alarm_irq = S5M8763_IRQ_ALARM0; 682e349c910SKrzysztof Kozlowski break; 683e349c910SKrzysztof Kozlowski case S5M8767X: 684e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 685f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 686a0347f20SKrzysztof Kozlowski alarm_irq = S5M8767_IRQ_RTCA1; 687e349c910SKrzysztof Kozlowski break; 688e349c910SKrzysztof Kozlowski default: 689*94f91922SKrzysztof Kozlowski dev_err(&pdev->dev, 690*94f91922SKrzysztof Kozlowski "Device type %lu is not supported by RTC driver\n", 691*94f91922SKrzysztof Kozlowski platform_get_device_id(pdev)->driver_data); 692e349c910SKrzysztof Kozlowski return -ENODEV; 693e349c910SKrzysztof Kozlowski } 694e349c910SKrzysztof Kozlowski 695e349c910SKrzysztof Kozlowski info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); 696e349c910SKrzysztof Kozlowski if (!info->i2c) { 697e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 698e349c910SKrzysztof Kozlowski return -ENODEV; 699e349c910SKrzysztof Kozlowski } 700e349c910SKrzysztof Kozlowski 701e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 702e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 703e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 704e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 705e349c910SKrzysztof Kozlowski ret); 706e349c910SKrzysztof Kozlowski goto err; 707e349c910SKrzysztof Kozlowski } 708e349c910SKrzysztof Kozlowski 7095bccae6eSSangbeom Kim info->dev = &pdev->dev; 7105bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 711*94f91922SKrzysztof Kozlowski info->device_type = platform_get_device_id(pdev)->driver_data; 7125bccae6eSSangbeom Kim 713b7d5b9a9SBartlomiej Zolnierkiewicz if (s5m87xx->irq_data) { 714a0347f20SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); 715a0347f20SKrzysztof Kozlowski if (info->irq <= 0) { 7165bccae6eSSangbeom Kim ret = -EINVAL; 717a0347f20SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", 718a0347f20SKrzysztof Kozlowski alarm_irq); 719e349c910SKrzysztof Kozlowski goto err; 7205bccae6eSSangbeom Kim } 721b7d5b9a9SBartlomiej Zolnierkiewicz } 7225bccae6eSSangbeom Kim 7235bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 7245bccae6eSSangbeom Kim 7255bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 7265bccae6eSSangbeom Kim 7275bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 7285bccae6eSSangbeom Kim 7295bccae6eSSangbeom Kim info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", 7305bccae6eSSangbeom Kim &s5m_rtc_ops, THIS_MODULE); 7315bccae6eSSangbeom Kim 732e349c910SKrzysztof Kozlowski if (IS_ERR(info->rtc_dev)) { 733e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->rtc_dev); 734e349c910SKrzysztof Kozlowski goto err; 735e349c910SKrzysztof Kozlowski } 7365bccae6eSSangbeom Kim 737b7d5b9a9SBartlomiej Zolnierkiewicz if (!info->irq) { 738b7d5b9a9SBartlomiej Zolnierkiewicz dev_info(&pdev->dev, "Alarm IRQ not available\n"); 739b7d5b9a9SBartlomiej Zolnierkiewicz return 0; 740b7d5b9a9SBartlomiej Zolnierkiewicz } 741b7d5b9a9SBartlomiej Zolnierkiewicz 7425bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 7435bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 7445bccae6eSSangbeom Kim info); 745e349c910SKrzysztof Kozlowski if (ret < 0) { 7465bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 7475bccae6eSSangbeom Kim info->irq, ret); 748e349c910SKrzysztof Kozlowski goto err; 749e349c910SKrzysztof Kozlowski } 750e349c910SKrzysztof Kozlowski 751e349c910SKrzysztof Kozlowski return 0; 752e349c910SKrzysztof Kozlowski 753e349c910SKrzysztof Kozlowski err: 754e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 7555bccae6eSSangbeom Kim 7565bccae6eSSangbeom Kim return ret; 7575bccae6eSSangbeom Kim } 7585bccae6eSSangbeom Kim 759e349c910SKrzysztof Kozlowski static int s5m_rtc_remove(struct platform_device *pdev) 760e349c910SKrzysztof Kozlowski { 761e349c910SKrzysztof Kozlowski struct s5m_rtc_info *info = platform_get_drvdata(pdev); 762e349c910SKrzysztof Kozlowski 763e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 764e349c910SKrzysztof Kozlowski 765e349c910SKrzysztof Kozlowski return 0; 766e349c910SKrzysztof Kozlowski } 767e349c910SKrzysztof Kozlowski 76811ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 769222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 770222ead7fSKrzysztof Kozlowski { 771222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 772222ead7fSKrzysztof Kozlowski int ret = 0; 773222ead7fSKrzysztof Kozlowski 774b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 775222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 776222ead7fSKrzysztof Kozlowski 777222ead7fSKrzysztof Kozlowski return ret; 778222ead7fSKrzysztof Kozlowski } 779222ead7fSKrzysztof Kozlowski 780222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(struct device *dev) 781222ead7fSKrzysztof Kozlowski { 782222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 783222ead7fSKrzysztof Kozlowski int ret = 0; 784222ead7fSKrzysztof Kozlowski 785b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 786222ead7fSKrzysztof Kozlowski ret = enable_irq_wake(info->irq); 787222ead7fSKrzysztof Kozlowski 788222ead7fSKrzysztof Kozlowski return ret; 789222ead7fSKrzysztof Kozlowski } 79011ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 791222ead7fSKrzysztof Kozlowski 792222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 793222ead7fSKrzysztof Kozlowski 7945bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 7950c5deb1eSKrzysztof Kozlowski { "s5m-rtc", S5M8767X }, 7965281f94aSKrzysztof Kozlowski { "s2mps13-rtc", S2MPS13X }, 7970c5deb1eSKrzysztof Kozlowski { "s2mps14-rtc", S2MPS14X }, 79845cd15e6SAndrey Ryabinin { }, 7995bccae6eSSangbeom Kim }; 8005bccae6eSSangbeom Kim 8015bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 8025bccae6eSSangbeom Kim .driver = { 8035bccae6eSSangbeom Kim .name = "s5m-rtc", 804222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 8055bccae6eSSangbeom Kim }, 8065bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 807e349c910SKrzysztof Kozlowski .remove = s5m_rtc_remove, 8085bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 8095bccae6eSSangbeom Kim }; 8105bccae6eSSangbeom Kim 8115bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 8125bccae6eSSangbeom Kim 8135bccae6eSSangbeom Kim /* Module information */ 8145bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 8150c5deb1eSKrzysztof Kozlowski MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); 8165bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 8175bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 818