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; 9594f91922SKrzysztof 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; 191*a65e5efaSAlim Akhtar case S2MPS15X: 1920c5deb1eSKrzysztof Kozlowski case S2MPS14X: 1935281f94aSKrzysztof Kozlowski case S2MPS13X: 1940c5deb1eSKrzysztof Kozlowski ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, 1950c5deb1eSKrzysztof Kozlowski &val); 1960c5deb1eSKrzysztof Kozlowski val &= S2MPS_ALARM0_STATUS; 1970c5deb1eSKrzysztof Kozlowski break; 198f8b23bbdSKrzysztof Kozlowski default: 199f8b23bbdSKrzysztof Kozlowski return -EINVAL; 200f8b23bbdSKrzysztof Kozlowski } 201f8b23bbdSKrzysztof Kozlowski if (ret < 0) 202f8b23bbdSKrzysztof Kozlowski return ret; 203f8b23bbdSKrzysztof Kozlowski 204f8b23bbdSKrzysztof Kozlowski if (val) 205f8b23bbdSKrzysztof Kozlowski alarm->pending = 1; 206f8b23bbdSKrzysztof Kozlowski else 207f8b23bbdSKrzysztof Kozlowski alarm->pending = 0; 208f8b23bbdSKrzysztof Kozlowski 209f8b23bbdSKrzysztof Kozlowski return 0; 210f8b23bbdSKrzysztof Kozlowski } 211f8b23bbdSKrzysztof Kozlowski 2125bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 2135bccae6eSSangbeom Kim { 2145bccae6eSSangbeom Kim int ret; 2155bccae6eSSangbeom Kim unsigned int data; 2165bccae6eSSangbeom Kim 217f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); 2185bccae6eSSangbeom Kim if (ret < 0) { 2195bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 2205bccae6eSSangbeom Kim return ret; 2215bccae6eSSangbeom Kim } 2225bccae6eSSangbeom Kim 223*a65e5efaSAlim Akhtar switch (info->device_type) { 224*a65e5efaSAlim Akhtar case S5M8763X: 225*a65e5efaSAlim Akhtar case S5M8767X: 226*a65e5efaSAlim Akhtar data |= info->regs->rtc_udr_mask | S5M_RTC_TIME_EN_MASK; 227*a65e5efaSAlim Akhtar case S2MPS15X: 228*a65e5efaSAlim Akhtar /* As per UM, for write time register, set WUDR bit to high */ 229*a65e5efaSAlim Akhtar data |= S2MPS15_RTC_WUDR_MASK; 230*a65e5efaSAlim Akhtar break; 231*a65e5efaSAlim Akhtar case S2MPS14X: 232*a65e5efaSAlim Akhtar case S2MPS13X: 233f8b23bbdSKrzysztof Kozlowski data |= info->regs->rtc_udr_mask; 234*a65e5efaSAlim Akhtar break; 235*a65e5efaSAlim Akhtar default: 236*a65e5efaSAlim Akhtar return -EINVAL; 237*a65e5efaSAlim Akhtar } 238*a65e5efaSAlim Akhtar 2395bccae6eSSangbeom Kim 240f8b23bbdSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); 2415bccae6eSSangbeom Kim if (ret < 0) { 2425bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 2435bccae6eSSangbeom Kim return ret; 2445bccae6eSSangbeom Kim } 2455bccae6eSSangbeom Kim 246d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2475bccae6eSSangbeom Kim 2485bccae6eSSangbeom Kim return ret; 2495bccae6eSSangbeom Kim } 2505bccae6eSSangbeom Kim 2515bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 2525bccae6eSSangbeom Kim { 2535bccae6eSSangbeom Kim int ret; 2545bccae6eSSangbeom Kim unsigned int data; 2555bccae6eSSangbeom Kim 256f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); 2575bccae6eSSangbeom Kim if (ret < 0) { 2585bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 2595bccae6eSSangbeom Kim __func__, ret); 2605bccae6eSSangbeom Kim return ret; 2615bccae6eSSangbeom Kim } 2625bccae6eSSangbeom Kim 263f8b23bbdSKrzysztof Kozlowski data |= info->regs->rtc_udr_mask; 2640c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 2650c5deb1eSKrzysztof Kozlowski case S5M8763X: 2660c5deb1eSKrzysztof Kozlowski case S5M8767X: 2670c5deb1eSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 2680c5deb1eSKrzysztof Kozlowski break; 269*a65e5efaSAlim Akhtar case S2MPS15X: 270*a65e5efaSAlim Akhtar /* As per UM, for write alarm, set A_UDR(bit[4]) to high 271*a65e5efaSAlim Akhtar * rtc_udr_mask above sets bit[4] 272*a65e5efaSAlim Akhtar */ 273*a65e5efaSAlim Akhtar break; 2740c5deb1eSKrzysztof Kozlowski case S2MPS14X: 2750c5deb1eSKrzysztof Kozlowski data |= S2MPS_RTC_RUDR_MASK; 2760c5deb1eSKrzysztof Kozlowski break; 2775281f94aSKrzysztof Kozlowski case S2MPS13X: 2785281f94aSKrzysztof Kozlowski data |= S2MPS13_RTC_AUDR_MASK; 2795281f94aSKrzysztof Kozlowski break; 2800c5deb1eSKrzysztof Kozlowski default: 2810c5deb1eSKrzysztof Kozlowski return -EINVAL; 2820c5deb1eSKrzysztof Kozlowski } 2835bccae6eSSangbeom Kim 284f8b23bbdSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); 2855bccae6eSSangbeom Kim if (ret < 0) { 2865bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 2875bccae6eSSangbeom Kim __func__, ret); 2885bccae6eSSangbeom Kim return ret; 2895bccae6eSSangbeom Kim } 2905bccae6eSSangbeom Kim 291d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2925bccae6eSSangbeom Kim 2935281f94aSKrzysztof Kozlowski /* On S2MPS13 the AUDR is not auto-cleared */ 2945281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS13X) 2955281f94aSKrzysztof Kozlowski regmap_update_bits(info->regmap, info->regs->rtc_udr_update, 2965281f94aSKrzysztof Kozlowski S2MPS13_RTC_AUDR_MASK, 0); 2975281f94aSKrzysztof Kozlowski 2985bccae6eSSangbeom Kim return ret; 2995bccae6eSSangbeom Kim } 3005bccae6eSSangbeom Kim 3015bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 3025bccae6eSSangbeom Kim { 3035bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 3045bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 3055bccae6eSSangbeom Kim 3065bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 3075bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 3085bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 3095bccae6eSSangbeom Kim tm->tm_hour += 12; 3105bccae6eSSangbeom Kim } else { 3115bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 3125bccae6eSSangbeom Kim } 3135bccae6eSSangbeom Kim 3145bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 3155bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 3165bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 3175bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 3185bccae6eSSangbeom Kim tm->tm_year -= 1900; 3195bccae6eSSangbeom Kim } 3205bccae6eSSangbeom Kim 3215bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 3225bccae6eSSangbeom Kim { 3235bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 3245bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 3255bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 3265bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 3275bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 3285bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 3295bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 3305bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 3315bccae6eSSangbeom Kim } 3325bccae6eSSangbeom Kim 3335bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 3345bccae6eSSangbeom Kim { 3355bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 336f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3375bccae6eSSangbeom Kim int ret; 3385bccae6eSSangbeom Kim 339*a65e5efaSAlim Akhtar if (info->device_type == S2MPS15X || info->device_type == S2MPS14X || 340*a65e5efaSAlim Akhtar info->device_type == S2MPS13X) { 3410c5deb1eSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, 3420c5deb1eSKrzysztof Kozlowski info->regs->rtc_udr_update, 3430c5deb1eSKrzysztof Kozlowski S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK); 3440c5deb1eSKrzysztof Kozlowski if (ret) { 3450c5deb1eSKrzysztof Kozlowski dev_err(dev, 3460c5deb1eSKrzysztof Kozlowski "Failed to prepare registers for time reading: %d\n", 3470c5deb1eSKrzysztof Kozlowski ret); 3480c5deb1eSKrzysztof Kozlowski return ret; 3490c5deb1eSKrzysztof Kozlowski } 3500c5deb1eSKrzysztof Kozlowski } 351f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->time, data, 352f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3535bccae6eSSangbeom Kim if (ret < 0) 3545bccae6eSSangbeom Kim return ret; 3555bccae6eSSangbeom Kim 3565bccae6eSSangbeom Kim switch (info->device_type) { 3575bccae6eSSangbeom Kim case S5M8763X: 3585bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 3595bccae6eSSangbeom Kim break; 3605bccae6eSSangbeom Kim 3615bccae6eSSangbeom Kim case S5M8767X: 362*a65e5efaSAlim Akhtar case S2MPS15X: 3630c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3645281f94aSKrzysztof Kozlowski case S2MPS13X: 3655bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 3665bccae6eSSangbeom Kim break; 3675bccae6eSSangbeom Kim 3685bccae6eSSangbeom Kim default: 3695bccae6eSSangbeom Kim return -EINVAL; 3705bccae6eSSangbeom Kim } 3715bccae6eSSangbeom Kim 3725bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3735bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 3745bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 3755bccae6eSSangbeom Kim 3765bccae6eSSangbeom Kim return rtc_valid_tm(tm); 3775bccae6eSSangbeom Kim } 3785bccae6eSSangbeom Kim 3795bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 3805bccae6eSSangbeom Kim { 3815bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 382f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3835bccae6eSSangbeom Kim int ret = 0; 3845bccae6eSSangbeom Kim 3855bccae6eSSangbeom Kim switch (info->device_type) { 3865bccae6eSSangbeom Kim case S5M8763X: 3875bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 3885bccae6eSSangbeom Kim break; 3895bccae6eSSangbeom Kim case S5M8767X: 390*a65e5efaSAlim Akhtar case S2MPS15X: 3910c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3925281f94aSKrzysztof Kozlowski case S2MPS13X: 3935bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 3945bccae6eSSangbeom Kim break; 3955bccae6eSSangbeom Kim default: 3965bccae6eSSangbeom Kim return -EINVAL; 3975bccae6eSSangbeom Kim } 3985bccae6eSSangbeom Kim 3995bccae6eSSangbeom Kim if (ret < 0) 4005bccae6eSSangbeom Kim return ret; 4015bccae6eSSangbeom Kim 4025bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4035bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 4045bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 4055bccae6eSSangbeom Kim 406f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->time, data, 407f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4085bccae6eSSangbeom Kim if (ret < 0) 4095bccae6eSSangbeom Kim return ret; 4105bccae6eSSangbeom Kim 4115bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 4125bccae6eSSangbeom Kim 4135bccae6eSSangbeom Kim return ret; 4145bccae6eSSangbeom Kim } 4155bccae6eSSangbeom Kim 4165bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 4175bccae6eSSangbeom Kim { 4185bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 419f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4205bccae6eSSangbeom Kim unsigned int val; 4215bccae6eSSangbeom Kim int ret, i; 4225bccae6eSSangbeom Kim 423f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 424f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4255bccae6eSSangbeom Kim if (ret < 0) 4265bccae6eSSangbeom Kim return ret; 4275bccae6eSSangbeom Kim 4285bccae6eSSangbeom Kim switch (info->device_type) { 4295bccae6eSSangbeom Kim case S5M8763X: 4305bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 431602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 4325bccae6eSSangbeom Kim if (ret < 0) 4335bccae6eSSangbeom Kim return ret; 4345bccae6eSSangbeom Kim 4355bccae6eSSangbeom Kim alrm->enabled = !!val; 4365bccae6eSSangbeom Kim break; 4375bccae6eSSangbeom Kim 4385bccae6eSSangbeom Kim case S5M8767X: 439*a65e5efaSAlim Akhtar case S2MPS15X: 4400c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4415281f94aSKrzysztof Kozlowski case S2MPS13X: 4425bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 4435bccae6eSSangbeom Kim alrm->enabled = 0; 444f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) { 4455bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 4465bccae6eSSangbeom Kim alrm->enabled = 1; 4475bccae6eSSangbeom Kim break; 4485bccae6eSSangbeom Kim } 4495bccae6eSSangbeom Kim } 4505bccae6eSSangbeom Kim break; 4515bccae6eSSangbeom Kim 4525bccae6eSSangbeom Kim default: 4535bccae6eSSangbeom Kim return -EINVAL; 4545bccae6eSSangbeom Kim } 4555bccae6eSSangbeom Kim 456f8b23bbdSKrzysztof Kozlowski dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 457f8b23bbdSKrzysztof Kozlowski 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 458f8b23bbdSKrzysztof Kozlowski alrm->time.tm_mday, alrm->time.tm_hour, 459f8b23bbdSKrzysztof Kozlowski alrm->time.tm_min, alrm->time.tm_sec, 460f8b23bbdSKrzysztof Kozlowski alrm->time.tm_wday); 461f8b23bbdSKrzysztof Kozlowski 462f8b23bbdSKrzysztof Kozlowski ret = s5m_check_peding_alarm_interrupt(info, alrm); 4635bccae6eSSangbeom Kim 4645bccae6eSSangbeom Kim return 0; 4655bccae6eSSangbeom Kim } 4665bccae6eSSangbeom Kim 4675bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 4685bccae6eSSangbeom Kim { 469f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4705bccae6eSSangbeom Kim int ret, i; 4715bccae6eSSangbeom Kim struct rtc_time tm; 4725bccae6eSSangbeom Kim 473f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 474f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4755bccae6eSSangbeom Kim if (ret < 0) 4765bccae6eSSangbeom Kim return ret; 4775bccae6eSSangbeom Kim 4785bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 4795bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4805bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 4815bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 4825bccae6eSSangbeom Kim 4835bccae6eSSangbeom Kim switch (info->device_type) { 4845bccae6eSSangbeom Kim case S5M8763X: 485602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 4865bccae6eSSangbeom Kim break; 4875bccae6eSSangbeom Kim 4885bccae6eSSangbeom Kim case S5M8767X: 489*a65e5efaSAlim Akhtar case S2MPS15X: 4900c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4915281f94aSKrzysztof Kozlowski case S2MPS13X: 492f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) 4935bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 4945bccae6eSSangbeom Kim 495f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 496f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4975bccae6eSSangbeom Kim if (ret < 0) 4985bccae6eSSangbeom Kim return ret; 4995bccae6eSSangbeom Kim 5005bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5015bccae6eSSangbeom Kim 5025bccae6eSSangbeom Kim break; 5035bccae6eSSangbeom Kim 5045bccae6eSSangbeom Kim default: 5055bccae6eSSangbeom Kim return -EINVAL; 5065bccae6eSSangbeom Kim } 5075bccae6eSSangbeom Kim 5085bccae6eSSangbeom Kim return ret; 5095bccae6eSSangbeom Kim } 5105bccae6eSSangbeom Kim 5115bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 5125bccae6eSSangbeom Kim { 5135bccae6eSSangbeom Kim int ret; 514f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5155bccae6eSSangbeom Kim u8 alarm0_conf; 5165bccae6eSSangbeom Kim struct rtc_time tm; 5175bccae6eSSangbeom Kim 518f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 519f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5205bccae6eSSangbeom Kim if (ret < 0) 5215bccae6eSSangbeom Kim return ret; 5225bccae6eSSangbeom Kim 5235bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5245bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5255bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 5265bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 5275bccae6eSSangbeom Kim 5285bccae6eSSangbeom Kim switch (info->device_type) { 5295bccae6eSSangbeom Kim case S5M8763X: 5305bccae6eSSangbeom Kim alarm0_conf = 0x77; 531602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 5325bccae6eSSangbeom Kim break; 5335bccae6eSSangbeom Kim 5345bccae6eSSangbeom Kim case S5M8767X: 535*a65e5efaSAlim Akhtar case S2MPS15X: 5360c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5375281f94aSKrzysztof Kozlowski case S2MPS13X: 5385bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 5395bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 5405bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 5415bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 5425bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 5435bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 5445bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 5455bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 5465bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 5475bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 5485bccae6eSSangbeom Kim 549f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 550f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5515bccae6eSSangbeom Kim if (ret < 0) 5525bccae6eSSangbeom Kim return ret; 5535bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5545bccae6eSSangbeom Kim 5555bccae6eSSangbeom Kim break; 5565bccae6eSSangbeom Kim 5575bccae6eSSangbeom Kim default: 5585bccae6eSSangbeom Kim return -EINVAL; 5595bccae6eSSangbeom Kim } 5605bccae6eSSangbeom Kim 5615bccae6eSSangbeom Kim return ret; 5625bccae6eSSangbeom Kim } 5635bccae6eSSangbeom Kim 5645bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 5655bccae6eSSangbeom Kim { 5665bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 567f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5685bccae6eSSangbeom Kim int ret; 5695bccae6eSSangbeom Kim 5705bccae6eSSangbeom Kim switch (info->device_type) { 5715bccae6eSSangbeom Kim case S5M8763X: 5725bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 5735bccae6eSSangbeom Kim break; 5745bccae6eSSangbeom Kim 5755bccae6eSSangbeom Kim case S5M8767X: 576*a65e5efaSAlim Akhtar case S2MPS15X: 5770c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5785281f94aSKrzysztof Kozlowski case S2MPS13X: 5795bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 5805bccae6eSSangbeom Kim break; 5815bccae6eSSangbeom Kim 5825bccae6eSSangbeom Kim default: 5835bccae6eSSangbeom Kim return -EINVAL; 5845bccae6eSSangbeom Kim } 5855bccae6eSSangbeom Kim 5865bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5875bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 5885bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, 5895bccae6eSSangbeom Kim alrm->time.tm_sec, alrm->time.tm_wday); 5905bccae6eSSangbeom Kim 5915bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 5925bccae6eSSangbeom Kim if (ret < 0) 5935bccae6eSSangbeom Kim return ret; 5945bccae6eSSangbeom Kim 595f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 596f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5975bccae6eSSangbeom Kim if (ret < 0) 5985bccae6eSSangbeom Kim return ret; 5995bccae6eSSangbeom Kim 6005bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 6015bccae6eSSangbeom Kim if (ret < 0) 6025bccae6eSSangbeom Kim return ret; 6035bccae6eSSangbeom Kim 6045bccae6eSSangbeom Kim if (alrm->enabled) 6055bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 6065bccae6eSSangbeom Kim 6075bccae6eSSangbeom Kim return ret; 6085bccae6eSSangbeom Kim } 6095bccae6eSSangbeom Kim 6105bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 6115bccae6eSSangbeom Kim unsigned int enabled) 6125bccae6eSSangbeom Kim { 6135bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 6145bccae6eSSangbeom Kim 6155bccae6eSSangbeom Kim if (enabled) 6165bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 6175bccae6eSSangbeom Kim else 6185bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 6195bccae6eSSangbeom Kim } 6205bccae6eSSangbeom Kim 6215bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 6225bccae6eSSangbeom Kim { 6235bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 6245bccae6eSSangbeom Kim 6255bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 6265bccae6eSSangbeom Kim 6275bccae6eSSangbeom Kim return IRQ_HANDLED; 6285bccae6eSSangbeom Kim } 6295bccae6eSSangbeom Kim 6305bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 6315bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 6325bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 6335bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 6345bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 6355bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 6365bccae6eSSangbeom Kim }; 6375bccae6eSSangbeom Kim 6385bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 6395bccae6eSSangbeom Kim { 6405bccae6eSSangbeom Kim u8 data[2]; 6415bccae6eSSangbeom Kim int ret; 6425bccae6eSSangbeom Kim 6430c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 6440c5deb1eSKrzysztof Kozlowski case S5M8763X: 6450c5deb1eSKrzysztof Kozlowski case S5M8767X: 6460c5f5d9aSKrzysztof Kozlowski /* UDR update time. Default of 7.32 ms is too long. */ 6470c5f5d9aSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 6480c5f5d9aSKrzysztof Kozlowski S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); 6490c5f5d9aSKrzysztof Kozlowski if (ret < 0) 6500c5f5d9aSKrzysztof Kozlowski dev_err(info->dev, "%s: fail to change UDR time: %d\n", 6510c5f5d9aSKrzysztof Kozlowski __func__, ret); 6520c5f5d9aSKrzysztof Kozlowski 6535bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 6545bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6555bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6565bccae6eSSangbeom Kim 657602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 6580c5deb1eSKrzysztof Kozlowski break; 6590c5deb1eSKrzysztof Kozlowski 660*a65e5efaSAlim Akhtar case S2MPS15X: 6610c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6625281f94aSKrzysztof Kozlowski case S2MPS13X: 6630c5deb1eSKrzysztof Kozlowski data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6640c5deb1eSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); 665ff02c044SJoonyoung Shim if (ret < 0) 666ff02c044SJoonyoung Shim break; 667ff02c044SJoonyoung Shim 668ff02c044SJoonyoung Shim /* 669ff02c044SJoonyoung Shim * Should set WUDR & (RUDR or AUDR) bits to high after writing 670ff02c044SJoonyoung Shim * RTC_CTRL register like writing Alarm registers. We can't find 671ff02c044SJoonyoung Shim * the description from datasheet but vendor code does that 672ff02c044SJoonyoung Shim * really. 673ff02c044SJoonyoung Shim */ 674ff02c044SJoonyoung Shim ret = s5m8767_rtc_set_alarm_reg(info); 6750c5deb1eSKrzysztof Kozlowski break; 6760c5deb1eSKrzysztof Kozlowski 6770c5deb1eSKrzysztof Kozlowski default: 6780c5deb1eSKrzysztof Kozlowski return -EINVAL; 6790c5deb1eSKrzysztof Kozlowski } 6800c5deb1eSKrzysztof Kozlowski 6810c5deb1eSKrzysztof Kozlowski info->rtc_24hr_mode = 1; 6825bccae6eSSangbeom Kim if (ret < 0) { 6835bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 6845bccae6eSSangbeom Kim __func__, ret); 6855bccae6eSSangbeom Kim return ret; 6865bccae6eSSangbeom Kim } 6875bccae6eSSangbeom Kim 6885bccae6eSSangbeom Kim return ret; 6895bccae6eSSangbeom Kim } 6905bccae6eSSangbeom Kim 6915bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 6925bccae6eSSangbeom Kim { 6935bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 6945bccae6eSSangbeom Kim struct sec_platform_data *pdata = s5m87xx->pdata; 6955bccae6eSSangbeom Kim struct s5m_rtc_info *info; 696e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 697a0347f20SKrzysztof Kozlowski int ret, alarm_irq; 6985bccae6eSSangbeom Kim 6995bccae6eSSangbeom Kim if (!pdata) { 7005bccae6eSSangbeom Kim dev_err(pdev->dev.parent, "Platform data not supplied\n"); 7015bccae6eSSangbeom Kim return -ENODEV; 7025bccae6eSSangbeom Kim } 7035bccae6eSSangbeom Kim 7045bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 7055bccae6eSSangbeom Kim if (!info) 7065bccae6eSSangbeom Kim return -ENOMEM; 7075bccae6eSSangbeom Kim 70894f91922SKrzysztof Kozlowski switch (platform_get_device_id(pdev)->driver_data) { 709*a65e5efaSAlim Akhtar case S2MPS15X: 710e349c910SKrzysztof Kozlowski case S2MPS14X: 7115281f94aSKrzysztof Kozlowski case S2MPS13X: 712e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7130c5deb1eSKrzysztof Kozlowski info->regs = &s2mps_rtc_regs; 714a0347f20SKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 715e349c910SKrzysztof Kozlowski break; 716e349c910SKrzysztof Kozlowski case S5M8763X: 717e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 718f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 719a0347f20SKrzysztof Kozlowski alarm_irq = S5M8763_IRQ_ALARM0; 720e349c910SKrzysztof Kozlowski break; 721e349c910SKrzysztof Kozlowski case S5M8767X: 722e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 723f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 724a0347f20SKrzysztof Kozlowski alarm_irq = S5M8767_IRQ_RTCA1; 725e349c910SKrzysztof Kozlowski break; 726e349c910SKrzysztof Kozlowski default: 72794f91922SKrzysztof Kozlowski dev_err(&pdev->dev, 72894f91922SKrzysztof Kozlowski "Device type %lu is not supported by RTC driver\n", 72994f91922SKrzysztof Kozlowski platform_get_device_id(pdev)->driver_data); 730e349c910SKrzysztof Kozlowski return -ENODEV; 731e349c910SKrzysztof Kozlowski } 732e349c910SKrzysztof Kozlowski 733e349c910SKrzysztof Kozlowski info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); 734e349c910SKrzysztof Kozlowski if (!info->i2c) { 735e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 736e349c910SKrzysztof Kozlowski return -ENODEV; 737e349c910SKrzysztof Kozlowski } 738e349c910SKrzysztof Kozlowski 739e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 740e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 741e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 742e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 743e349c910SKrzysztof Kozlowski ret); 744e349c910SKrzysztof Kozlowski goto err; 745e349c910SKrzysztof Kozlowski } 746e349c910SKrzysztof Kozlowski 7475bccae6eSSangbeom Kim info->dev = &pdev->dev; 7485bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 74994f91922SKrzysztof Kozlowski info->device_type = platform_get_device_id(pdev)->driver_data; 7505bccae6eSSangbeom Kim 751b7d5b9a9SBartlomiej Zolnierkiewicz if (s5m87xx->irq_data) { 752a0347f20SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); 753a0347f20SKrzysztof Kozlowski if (info->irq <= 0) { 7545bccae6eSSangbeom Kim ret = -EINVAL; 755a0347f20SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", 756a0347f20SKrzysztof Kozlowski alarm_irq); 757e349c910SKrzysztof Kozlowski goto err; 7585bccae6eSSangbeom Kim } 759b7d5b9a9SBartlomiej Zolnierkiewicz } 7605bccae6eSSangbeom Kim 7615bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 7625bccae6eSSangbeom Kim 7635bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 7645bccae6eSSangbeom Kim 7655bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 7665bccae6eSSangbeom Kim 7675bccae6eSSangbeom Kim info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", 7685bccae6eSSangbeom Kim &s5m_rtc_ops, THIS_MODULE); 7695bccae6eSSangbeom Kim 770e349c910SKrzysztof Kozlowski if (IS_ERR(info->rtc_dev)) { 771e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->rtc_dev); 772e349c910SKrzysztof Kozlowski goto err; 773e349c910SKrzysztof Kozlowski } 7745bccae6eSSangbeom Kim 775b7d5b9a9SBartlomiej Zolnierkiewicz if (!info->irq) { 776b7d5b9a9SBartlomiej Zolnierkiewicz dev_info(&pdev->dev, "Alarm IRQ not available\n"); 777b7d5b9a9SBartlomiej Zolnierkiewicz return 0; 778b7d5b9a9SBartlomiej Zolnierkiewicz } 779b7d5b9a9SBartlomiej Zolnierkiewicz 7805bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 7815bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 7825bccae6eSSangbeom Kim info); 783e349c910SKrzysztof Kozlowski if (ret < 0) { 7845bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 7855bccae6eSSangbeom Kim info->irq, ret); 786e349c910SKrzysztof Kozlowski goto err; 787e349c910SKrzysztof Kozlowski } 788e349c910SKrzysztof Kozlowski 789e349c910SKrzysztof Kozlowski return 0; 790e349c910SKrzysztof Kozlowski 791e349c910SKrzysztof Kozlowski err: 792e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 7935bccae6eSSangbeom Kim 7945bccae6eSSangbeom Kim return ret; 7955bccae6eSSangbeom Kim } 7965bccae6eSSangbeom Kim 797e349c910SKrzysztof Kozlowski static int s5m_rtc_remove(struct platform_device *pdev) 798e349c910SKrzysztof Kozlowski { 799e349c910SKrzysztof Kozlowski struct s5m_rtc_info *info = platform_get_drvdata(pdev); 800e349c910SKrzysztof Kozlowski 801e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 802e349c910SKrzysztof Kozlowski 803e349c910SKrzysztof Kozlowski return 0; 804e349c910SKrzysztof Kozlowski } 805e349c910SKrzysztof Kozlowski 80611ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 807222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 808222ead7fSKrzysztof Kozlowski { 809222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 810222ead7fSKrzysztof Kozlowski int ret = 0; 811222ead7fSKrzysztof Kozlowski 812b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 813222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 814222ead7fSKrzysztof Kozlowski 815222ead7fSKrzysztof Kozlowski return ret; 816222ead7fSKrzysztof Kozlowski } 817222ead7fSKrzysztof Kozlowski 818222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(struct device *dev) 819222ead7fSKrzysztof Kozlowski { 820222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 821222ead7fSKrzysztof Kozlowski int ret = 0; 822222ead7fSKrzysztof Kozlowski 823b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 824222ead7fSKrzysztof Kozlowski ret = enable_irq_wake(info->irq); 825222ead7fSKrzysztof Kozlowski 826222ead7fSKrzysztof Kozlowski return ret; 827222ead7fSKrzysztof Kozlowski } 82811ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 829222ead7fSKrzysztof Kozlowski 830222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 831222ead7fSKrzysztof Kozlowski 8325bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 8330c5deb1eSKrzysztof Kozlowski { "s5m-rtc", S5M8767X }, 8345281f94aSKrzysztof Kozlowski { "s2mps13-rtc", S2MPS13X }, 8350c5deb1eSKrzysztof Kozlowski { "s2mps14-rtc", S2MPS14X }, 836*a65e5efaSAlim Akhtar { "s2mps15-rtc", S2MPS15X }, 83745cd15e6SAndrey Ryabinin { }, 8385bccae6eSSangbeom Kim }; 83963074cc3SJavier Martinez Canillas MODULE_DEVICE_TABLE(platform, s5m_rtc_id); 8405bccae6eSSangbeom Kim 8415bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 8425bccae6eSSangbeom Kim .driver = { 8435bccae6eSSangbeom Kim .name = "s5m-rtc", 844222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 8455bccae6eSSangbeom Kim }, 8465bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 847e349c910SKrzysztof Kozlowski .remove = s5m_rtc_remove, 8485bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 8495bccae6eSSangbeom Kim }; 8505bccae6eSSangbeom Kim 8515bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 8525bccae6eSSangbeom Kim 8535bccae6eSSangbeom Kim /* Module information */ 8545bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 8550c5deb1eSKrzysztof Kozlowski MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); 8565bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 8575bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 858