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 41*4a681243SGustavo A. R. Silva enum { 42*4a681243SGustavo A. R. Silva RTC_SEC = 0, 43*4a681243SGustavo A. R. Silva RTC_MIN, 44*4a681243SGustavo A. R. Silva RTC_HOUR, 45*4a681243SGustavo A. R. Silva RTC_WEEKDAY, 46*4a681243SGustavo A. R. Silva RTC_DATE, 47*4a681243SGustavo A. R. Silva RTC_MONTH, 48*4a681243SGustavo A. R. Silva RTC_YEAR1, 49*4a681243SGustavo A. R. Silva RTC_YEAR2, 50*4a681243SGustavo A. R. Silva }; 51*4a681243SGustavo A. R. Silva 528ae83b6fSKrzysztof Kozlowski /* 538ae83b6fSKrzysztof Kozlowski * Registers used by the driver which are different between chipsets. 548ae83b6fSKrzysztof Kozlowski * 558ae83b6fSKrzysztof Kozlowski * Operations like read time and write alarm/time require updating 568ae83b6fSKrzysztof Kozlowski * specific fields in UDR register. These fields usually are auto-cleared 578ae83b6fSKrzysztof Kozlowski * (with some exceptions). 588ae83b6fSKrzysztof Kozlowski * 598ae83b6fSKrzysztof Kozlowski * Table of operations per device: 608ae83b6fSKrzysztof Kozlowski * 618ae83b6fSKrzysztof Kozlowski * Device | Write time | Read time | Write alarm 628ae83b6fSKrzysztof Kozlowski * ================================================= 638ae83b6fSKrzysztof Kozlowski * S5M8767 | UDR + TIME | | UDR 648ae83b6fSKrzysztof Kozlowski * S2MPS11/14 | WUDR | RUDR | WUDR + RUDR 658ae83b6fSKrzysztof Kozlowski * S2MPS13 | WUDR | RUDR | WUDR + AUDR 668ae83b6fSKrzysztof Kozlowski * S2MPS15 | WUDR | RUDR | AUDR 678ae83b6fSKrzysztof Kozlowski */ 68f8b23bbdSKrzysztof Kozlowski struct s5m_rtc_reg_config { 69f8b23bbdSKrzysztof Kozlowski /* Number of registers used for setting time/alarm0/alarm1 */ 70f8b23bbdSKrzysztof Kozlowski unsigned int regs_count; 71f8b23bbdSKrzysztof Kozlowski /* First register for time, seconds */ 72f8b23bbdSKrzysztof Kozlowski unsigned int time; 73f8b23bbdSKrzysztof Kozlowski /* RTC control register */ 74f8b23bbdSKrzysztof Kozlowski unsigned int ctrl; 75f8b23bbdSKrzysztof Kozlowski /* First register for alarm 0, seconds */ 76f8b23bbdSKrzysztof Kozlowski unsigned int alarm0; 77f8b23bbdSKrzysztof Kozlowski /* First register for alarm 1, seconds */ 78f8b23bbdSKrzysztof Kozlowski unsigned int alarm1; 79f8b23bbdSKrzysztof Kozlowski /* 80f8b23bbdSKrzysztof Kozlowski * Register for update flag (UDR). Typically setting UDR field to 1 81f8b23bbdSKrzysztof Kozlowski * will enable update of time or alarm register. Then it will be 82f8b23bbdSKrzysztof Kozlowski * auto-cleared after successful update. 83f8b23bbdSKrzysztof Kozlowski */ 84a83a793aSKrzysztof Kozlowski unsigned int udr_update; 8567a6025aSKrzysztof Kozlowski /* Auto-cleared mask in UDR field for writing time and alarm */ 8667a6025aSKrzysztof Kozlowski unsigned int autoclear_udr_mask; 878ae83b6fSKrzysztof Kozlowski /* 888ae83b6fSKrzysztof Kozlowski * Masks in UDR field for time and alarm operations. 898ae83b6fSKrzysztof Kozlowski * The read time mask can be 0. Rest should not. 908ae83b6fSKrzysztof Kozlowski */ 918ae83b6fSKrzysztof Kozlowski unsigned int read_time_udr_mask; 928ae83b6fSKrzysztof Kozlowski unsigned int write_time_udr_mask; 938ae83b6fSKrzysztof Kozlowski unsigned int write_alarm_udr_mask; 94f8b23bbdSKrzysztof Kozlowski }; 95f8b23bbdSKrzysztof Kozlowski 96f8b23bbdSKrzysztof Kozlowski /* Register map for S5M8763 and S5M8767 */ 97f8b23bbdSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s5m_rtc_regs = { 98f8b23bbdSKrzysztof Kozlowski .regs_count = 8, 99f8b23bbdSKrzysztof Kozlowski .time = S5M_RTC_SEC, 100f8b23bbdSKrzysztof Kozlowski .ctrl = S5M_ALARM1_CONF, 101f8b23bbdSKrzysztof Kozlowski .alarm0 = S5M_ALARM0_SEC, 102f8b23bbdSKrzysztof Kozlowski .alarm1 = S5M_ALARM1_SEC, 103a83a793aSKrzysztof Kozlowski .udr_update = S5M_RTC_UDR_CON, 10467a6025aSKrzysztof Kozlowski .autoclear_udr_mask = S5M_RTC_UDR_MASK, 1058ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = 0, /* Not needed */ 1068ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S5M_RTC_UDR_MASK | S5M_RTC_TIME_EN_MASK, 1078ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S5M_RTC_UDR_MASK, 108f8b23bbdSKrzysztof Kozlowski }; 109f8b23bbdSKrzysztof Kozlowski 1108ae83b6fSKrzysztof Kozlowski /* Register map for S2MPS13 */ 1118ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps13_rtc_regs = { 1120c5deb1eSKrzysztof Kozlowski .regs_count = 7, 1130c5deb1eSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1140c5deb1eSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1150c5deb1eSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1160c5deb1eSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 117a83a793aSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 11867a6025aSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1198ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1208ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS_RTC_WUDR_MASK, 1218ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS13_RTC_AUDR_MASK, 1228ae83b6fSKrzysztof Kozlowski }; 1238ae83b6fSKrzysztof Kozlowski 1248ae83b6fSKrzysztof Kozlowski /* Register map for S2MPS11/14 */ 1258ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps14_rtc_regs = { 1268ae83b6fSKrzysztof Kozlowski .regs_count = 7, 1278ae83b6fSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1288ae83b6fSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1298ae83b6fSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1308ae83b6fSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 1318ae83b6fSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 1328ae83b6fSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1338ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1348ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS_RTC_WUDR_MASK, 1358ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS_RTC_RUDR_MASK, 1368ae83b6fSKrzysztof Kozlowski }; 1378ae83b6fSKrzysztof Kozlowski 1388ae83b6fSKrzysztof Kozlowski /* 1398ae83b6fSKrzysztof Kozlowski * Register map for S2MPS15 - in comparison to S2MPS14 the WUDR and AUDR bits 1408ae83b6fSKrzysztof Kozlowski * are swapped. 1418ae83b6fSKrzysztof Kozlowski */ 1428ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps15_rtc_regs = { 1438ae83b6fSKrzysztof Kozlowski .regs_count = 7, 1448ae83b6fSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1458ae83b6fSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1468ae83b6fSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1478ae83b6fSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 1488ae83b6fSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 1498ae83b6fSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1508ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1518ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS15_RTC_WUDR_MASK, 1528ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS15_RTC_AUDR_MASK, 1530c5deb1eSKrzysztof Kozlowski }; 1540c5deb1eSKrzysztof Kozlowski 1555bccae6eSSangbeom Kim struct s5m_rtc_info { 1565bccae6eSSangbeom Kim struct device *dev; 157e349c910SKrzysztof Kozlowski struct i2c_client *i2c; 1585bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx; 1595ccb7d71SGeert Uytterhoeven struct regmap *regmap; 1605bccae6eSSangbeom Kim struct rtc_device *rtc_dev; 1615bccae6eSSangbeom Kim int irq; 16294f91922SKrzysztof Kozlowski enum sec_device_type device_type; 1635bccae6eSSangbeom Kim int rtc_24hr_mode; 164f8b23bbdSKrzysztof Kozlowski const struct s5m_rtc_reg_config *regs; 1655bccae6eSSangbeom Kim }; 1665bccae6eSSangbeom Kim 167e349c910SKrzysztof Kozlowski static const struct regmap_config s5m_rtc_regmap_config = { 168e349c910SKrzysztof Kozlowski .reg_bits = 8, 169e349c910SKrzysztof Kozlowski .val_bits = 8, 170e349c910SKrzysztof Kozlowski 171602cb5bbSKrzysztof Kozlowski .max_register = S5M_RTC_REG_MAX, 172e349c910SKrzysztof Kozlowski }; 173e349c910SKrzysztof Kozlowski 174e349c910SKrzysztof Kozlowski static const struct regmap_config s2mps14_rtc_regmap_config = { 175e349c910SKrzysztof Kozlowski .reg_bits = 8, 176e349c910SKrzysztof Kozlowski .val_bits = 8, 177e349c910SKrzysztof Kozlowski 178e349c910SKrzysztof Kozlowski .max_register = S2MPS_RTC_REG_MAX, 179e349c910SKrzysztof Kozlowski }; 180e349c910SKrzysztof Kozlowski 1815bccae6eSSangbeom Kim static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, 1825bccae6eSSangbeom Kim int rtc_24hr_mode) 1835bccae6eSSangbeom Kim { 1845bccae6eSSangbeom Kim tm->tm_sec = data[RTC_SEC] & 0x7f; 1855bccae6eSSangbeom Kim tm->tm_min = data[RTC_MIN] & 0x7f; 1865bccae6eSSangbeom Kim if (rtc_24hr_mode) { 1875bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x1f; 1885bccae6eSSangbeom Kim } else { 1895bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x0f; 1905bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM_MASK) 1915bccae6eSSangbeom Kim tm->tm_hour += 12; 1925bccae6eSSangbeom Kim } 1935bccae6eSSangbeom Kim 1945bccae6eSSangbeom Kim tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); 1955bccae6eSSangbeom Kim tm->tm_mday = data[RTC_DATE] & 0x1f; 1965bccae6eSSangbeom Kim tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; 1975bccae6eSSangbeom Kim tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; 1985bccae6eSSangbeom Kim tm->tm_yday = 0; 1995bccae6eSSangbeom Kim tm->tm_isdst = 0; 2005bccae6eSSangbeom Kim } 2015bccae6eSSangbeom Kim 2025bccae6eSSangbeom Kim static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 2035bccae6eSSangbeom Kim { 2045bccae6eSSangbeom Kim data[RTC_SEC] = tm->tm_sec; 2055bccae6eSSangbeom Kim data[RTC_MIN] = tm->tm_min; 2065bccae6eSSangbeom Kim 2075bccae6eSSangbeom Kim if (tm->tm_hour >= 12) 2085bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; 2095bccae6eSSangbeom Kim else 2105bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; 2115bccae6eSSangbeom Kim 2125bccae6eSSangbeom Kim data[RTC_WEEKDAY] = 1 << tm->tm_wday; 2135bccae6eSSangbeom Kim data[RTC_DATE] = tm->tm_mday; 2145bccae6eSSangbeom Kim data[RTC_MONTH] = tm->tm_mon + 1; 2155bccae6eSSangbeom Kim data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; 2165bccae6eSSangbeom Kim 2175bccae6eSSangbeom Kim if (tm->tm_year < 100) { 218a737e835SJoe Perches pr_err("RTC cannot handle the year %d\n", 2195bccae6eSSangbeom Kim 1900 + tm->tm_year); 2205bccae6eSSangbeom Kim return -EINVAL; 2215bccae6eSSangbeom Kim } else { 2225bccae6eSSangbeom Kim return 0; 2235bccae6eSSangbeom Kim } 2245bccae6eSSangbeom Kim } 2255bccae6eSSangbeom Kim 226d73238d4SKrzysztof Kozlowski /* 227d73238d4SKrzysztof Kozlowski * Read RTC_UDR_CON register and wait till UDR field is cleared. 228d73238d4SKrzysztof Kozlowski * This indicates that time/alarm update ended. 229d73238d4SKrzysztof Kozlowski */ 2308124c711SKrzysztof Kozlowski static int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) 231d73238d4SKrzysztof Kozlowski { 232d73238d4SKrzysztof Kozlowski int ret, retry = UDR_READ_RETRY_CNT; 233d73238d4SKrzysztof Kozlowski unsigned int data; 234d73238d4SKrzysztof Kozlowski 235d73238d4SKrzysztof Kozlowski do { 236a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 23767a6025aSKrzysztof Kozlowski } while (--retry && (data & info->regs->autoclear_udr_mask) && !ret); 238d73238d4SKrzysztof Kozlowski 239d73238d4SKrzysztof Kozlowski if (!retry) 240d73238d4SKrzysztof Kozlowski dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); 241d73238d4SKrzysztof Kozlowski 242d73238d4SKrzysztof Kozlowski return ret; 243d73238d4SKrzysztof Kozlowski } 244d73238d4SKrzysztof Kozlowski 2458124c711SKrzysztof Kozlowski static int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, 246f8b23bbdSKrzysztof Kozlowski struct rtc_wkalrm *alarm) 247f8b23bbdSKrzysztof Kozlowski { 248f8b23bbdSKrzysztof Kozlowski int ret; 249f8b23bbdSKrzysztof Kozlowski unsigned int val; 250f8b23bbdSKrzysztof Kozlowski 251f8b23bbdSKrzysztof Kozlowski switch (info->device_type) { 252f8b23bbdSKrzysztof Kozlowski case S5M8767X: 253f8b23bbdSKrzysztof Kozlowski case S5M8763X: 254f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 255f8b23bbdSKrzysztof Kozlowski val &= S5M_ALARM0_STATUS; 256f8b23bbdSKrzysztof Kozlowski break; 257a65e5efaSAlim Akhtar case S2MPS15X: 2580c5deb1eSKrzysztof Kozlowski case S2MPS14X: 2595281f94aSKrzysztof Kozlowski case S2MPS13X: 2600c5deb1eSKrzysztof Kozlowski ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, 2610c5deb1eSKrzysztof Kozlowski &val); 2620c5deb1eSKrzysztof Kozlowski val &= S2MPS_ALARM0_STATUS; 2630c5deb1eSKrzysztof Kozlowski break; 264f8b23bbdSKrzysztof Kozlowski default: 265f8b23bbdSKrzysztof Kozlowski return -EINVAL; 266f8b23bbdSKrzysztof Kozlowski } 267f8b23bbdSKrzysztof Kozlowski if (ret < 0) 268f8b23bbdSKrzysztof Kozlowski return ret; 269f8b23bbdSKrzysztof Kozlowski 270f8b23bbdSKrzysztof Kozlowski if (val) 271f8b23bbdSKrzysztof Kozlowski alarm->pending = 1; 272f8b23bbdSKrzysztof Kozlowski else 273f8b23bbdSKrzysztof Kozlowski alarm->pending = 0; 274f8b23bbdSKrzysztof Kozlowski 275f8b23bbdSKrzysztof Kozlowski return 0; 276f8b23bbdSKrzysztof Kozlowski } 277f8b23bbdSKrzysztof Kozlowski 2788124c711SKrzysztof Kozlowski static int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 2795bccae6eSSangbeom Kim { 2805bccae6eSSangbeom Kim int ret; 2815bccae6eSSangbeom Kim unsigned int data; 2825bccae6eSSangbeom Kim 283a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 2845bccae6eSSangbeom Kim if (ret < 0) { 2855bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 2865bccae6eSSangbeom Kim return ret; 2875bccae6eSSangbeom Kim } 2885bccae6eSSangbeom Kim 2898ae83b6fSKrzysztof Kozlowski data |= info->regs->write_time_udr_mask; 290a65e5efaSAlim Akhtar 291a83a793aSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->udr_update, data); 2925bccae6eSSangbeom Kim if (ret < 0) { 2935bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 2945bccae6eSSangbeom Kim return ret; 2955bccae6eSSangbeom Kim } 2965bccae6eSSangbeom Kim 297d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2985bccae6eSSangbeom Kim 2995bccae6eSSangbeom Kim return ret; 3005bccae6eSSangbeom Kim } 3015bccae6eSSangbeom Kim 3028124c711SKrzysztof Kozlowski static int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 3035bccae6eSSangbeom Kim { 3045bccae6eSSangbeom Kim int ret; 3055bccae6eSSangbeom Kim unsigned int data; 3065bccae6eSSangbeom Kim 307a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 3085bccae6eSSangbeom Kim if (ret < 0) { 3095bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 3105bccae6eSSangbeom Kim __func__, ret); 3115bccae6eSSangbeom Kim return ret; 3125bccae6eSSangbeom Kim } 3135bccae6eSSangbeom Kim 3148ae83b6fSKrzysztof Kozlowski data |= info->regs->write_alarm_udr_mask; 3150c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 3160c5deb1eSKrzysztof Kozlowski case S5M8763X: 3170c5deb1eSKrzysztof Kozlowski case S5M8767X: 3180c5deb1eSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 3190c5deb1eSKrzysztof Kozlowski break; 320a65e5efaSAlim Akhtar case S2MPS15X: 3210c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3225281f94aSKrzysztof Kozlowski case S2MPS13X: 3238ae83b6fSKrzysztof Kozlowski /* No exceptions needed */ 3245281f94aSKrzysztof Kozlowski break; 3250c5deb1eSKrzysztof Kozlowski default: 3260c5deb1eSKrzysztof Kozlowski return -EINVAL; 3270c5deb1eSKrzysztof Kozlowski } 3285bccae6eSSangbeom Kim 329a83a793aSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->udr_update, data); 3305bccae6eSSangbeom Kim if (ret < 0) { 3315bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 3325bccae6eSSangbeom Kim __func__, ret); 3335bccae6eSSangbeom Kim return ret; 3345bccae6eSSangbeom Kim } 3355bccae6eSSangbeom Kim 336d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 3375bccae6eSSangbeom Kim 3385281f94aSKrzysztof Kozlowski /* On S2MPS13 the AUDR is not auto-cleared */ 3395281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS13X) 340a83a793aSKrzysztof Kozlowski regmap_update_bits(info->regmap, info->regs->udr_update, 3415281f94aSKrzysztof Kozlowski S2MPS13_RTC_AUDR_MASK, 0); 3425281f94aSKrzysztof Kozlowski 3435bccae6eSSangbeom Kim return ret; 3445bccae6eSSangbeom Kim } 3455bccae6eSSangbeom Kim 3465bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 3475bccae6eSSangbeom Kim { 3485bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 3495bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 3505bccae6eSSangbeom Kim 3515bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 3525bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 3535bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 3545bccae6eSSangbeom Kim tm->tm_hour += 12; 3555bccae6eSSangbeom Kim } else { 3565bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 3575bccae6eSSangbeom Kim } 3585bccae6eSSangbeom Kim 3595bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 3605bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 3615bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 3625bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 3635bccae6eSSangbeom Kim tm->tm_year -= 1900; 3645bccae6eSSangbeom Kim } 3655bccae6eSSangbeom Kim 3665bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 3675bccae6eSSangbeom Kim { 3685bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 3695bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 3705bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 3715bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 3725bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 3735bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 3745bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 3755bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 3765bccae6eSSangbeom Kim } 3775bccae6eSSangbeom Kim 3785bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 3795bccae6eSSangbeom Kim { 3805bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 381f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3825bccae6eSSangbeom Kim int ret; 3835bccae6eSSangbeom Kim 3848ae83b6fSKrzysztof Kozlowski if (info->regs->read_time_udr_mask) { 3850c5deb1eSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, 386a83a793aSKrzysztof Kozlowski info->regs->udr_update, 3878ae83b6fSKrzysztof Kozlowski info->regs->read_time_udr_mask, 3888ae83b6fSKrzysztof Kozlowski info->regs->read_time_udr_mask); 3890c5deb1eSKrzysztof Kozlowski if (ret) { 3900c5deb1eSKrzysztof Kozlowski dev_err(dev, 3910c5deb1eSKrzysztof Kozlowski "Failed to prepare registers for time reading: %d\n", 3920c5deb1eSKrzysztof Kozlowski ret); 3930c5deb1eSKrzysztof Kozlowski return ret; 3940c5deb1eSKrzysztof Kozlowski } 3950c5deb1eSKrzysztof Kozlowski } 396f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->time, data, 397f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3985bccae6eSSangbeom Kim if (ret < 0) 3995bccae6eSSangbeom Kim return ret; 4005bccae6eSSangbeom Kim 4015bccae6eSSangbeom Kim switch (info->device_type) { 4025bccae6eSSangbeom Kim case S5M8763X: 4035bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 4045bccae6eSSangbeom Kim break; 4055bccae6eSSangbeom Kim 4065bccae6eSSangbeom Kim case S5M8767X: 407a65e5efaSAlim Akhtar case S2MPS15X: 4080c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4095281f94aSKrzysztof Kozlowski case S2MPS13X: 4105bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 4115bccae6eSSangbeom Kim break; 4125bccae6eSSangbeom Kim 4135bccae6eSSangbeom Kim default: 4145bccae6eSSangbeom Kim return -EINVAL; 4155bccae6eSSangbeom Kim } 4165bccae6eSSangbeom Kim 4175bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4185bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 4195bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 4205bccae6eSSangbeom Kim 42122652ba7SAlexandre Belloni return 0; 4225bccae6eSSangbeom Kim } 4235bccae6eSSangbeom Kim 4245bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 4255bccae6eSSangbeom Kim { 4265bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 427f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4285bccae6eSSangbeom Kim int ret = 0; 4295bccae6eSSangbeom Kim 4305bccae6eSSangbeom Kim switch (info->device_type) { 4315bccae6eSSangbeom Kim case S5M8763X: 4325bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 4335bccae6eSSangbeom Kim break; 4345bccae6eSSangbeom Kim case S5M8767X: 435a65e5efaSAlim Akhtar case S2MPS15X: 4360c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4375281f94aSKrzysztof Kozlowski case S2MPS13X: 4385bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 4395bccae6eSSangbeom Kim break; 4405bccae6eSSangbeom Kim default: 4415bccae6eSSangbeom Kim return -EINVAL; 4425bccae6eSSangbeom Kim } 4435bccae6eSSangbeom Kim 4445bccae6eSSangbeom Kim if (ret < 0) 4455bccae6eSSangbeom Kim return ret; 4465bccae6eSSangbeom Kim 4475bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4485bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 4495bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 4505bccae6eSSangbeom Kim 451f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->time, data, 452f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4535bccae6eSSangbeom Kim if (ret < 0) 4545bccae6eSSangbeom Kim return ret; 4555bccae6eSSangbeom Kim 4565bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 4575bccae6eSSangbeom Kim 4585bccae6eSSangbeom Kim return ret; 4595bccae6eSSangbeom Kim } 4605bccae6eSSangbeom Kim 4615bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 4625bccae6eSSangbeom Kim { 4635bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 464f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4655bccae6eSSangbeom Kim unsigned int val; 4665bccae6eSSangbeom Kim int ret, i; 4675bccae6eSSangbeom Kim 468f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 469f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4705bccae6eSSangbeom Kim if (ret < 0) 4715bccae6eSSangbeom Kim return ret; 4725bccae6eSSangbeom Kim 4735bccae6eSSangbeom Kim switch (info->device_type) { 4745bccae6eSSangbeom Kim case S5M8763X: 4755bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 476602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 4775bccae6eSSangbeom Kim if (ret < 0) 4785bccae6eSSangbeom Kim return ret; 4795bccae6eSSangbeom Kim 4805bccae6eSSangbeom Kim alrm->enabled = !!val; 4815bccae6eSSangbeom Kim break; 4825bccae6eSSangbeom Kim 4835bccae6eSSangbeom Kim case S5M8767X: 484a65e5efaSAlim Akhtar case S2MPS15X: 4850c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4865281f94aSKrzysztof Kozlowski case S2MPS13X: 4875bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 4885bccae6eSSangbeom Kim alrm->enabled = 0; 489f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) { 4905bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 4915bccae6eSSangbeom Kim alrm->enabled = 1; 4925bccae6eSSangbeom Kim break; 4935bccae6eSSangbeom Kim } 4945bccae6eSSangbeom Kim } 4955bccae6eSSangbeom Kim break; 4965bccae6eSSangbeom Kim 4975bccae6eSSangbeom Kim default: 4985bccae6eSSangbeom Kim return -EINVAL; 4995bccae6eSSangbeom Kim } 5005bccae6eSSangbeom Kim 501f8b23bbdSKrzysztof Kozlowski dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 502f8b23bbdSKrzysztof Kozlowski 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 503f8b23bbdSKrzysztof Kozlowski alrm->time.tm_mday, alrm->time.tm_hour, 504f8b23bbdSKrzysztof Kozlowski alrm->time.tm_min, alrm->time.tm_sec, 505f8b23bbdSKrzysztof Kozlowski alrm->time.tm_wday); 506f8b23bbdSKrzysztof Kozlowski 507f8b23bbdSKrzysztof Kozlowski ret = s5m_check_peding_alarm_interrupt(info, alrm); 5085bccae6eSSangbeom Kim 5095bccae6eSSangbeom Kim return 0; 5105bccae6eSSangbeom Kim } 5115bccae6eSSangbeom Kim 5125bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 5135bccae6eSSangbeom Kim { 514f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5155bccae6eSSangbeom Kim int ret, i; 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: 530602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 5315bccae6eSSangbeom Kim break; 5325bccae6eSSangbeom Kim 5335bccae6eSSangbeom Kim case S5M8767X: 534a65e5efaSAlim Akhtar case S2MPS15X: 5350c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5365281f94aSKrzysztof Kozlowski case S2MPS13X: 537f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) 5385bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 5395bccae6eSSangbeom Kim 540f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 541f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5425bccae6eSSangbeom Kim if (ret < 0) 5435bccae6eSSangbeom Kim return ret; 5445bccae6eSSangbeom Kim 5455bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5465bccae6eSSangbeom Kim 5475bccae6eSSangbeom Kim break; 5485bccae6eSSangbeom Kim 5495bccae6eSSangbeom Kim default: 5505bccae6eSSangbeom Kim return -EINVAL; 5515bccae6eSSangbeom Kim } 5525bccae6eSSangbeom Kim 5535bccae6eSSangbeom Kim return ret; 5545bccae6eSSangbeom Kim } 5555bccae6eSSangbeom Kim 5565bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 5575bccae6eSSangbeom Kim { 5585bccae6eSSangbeom Kim int ret; 559f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5605bccae6eSSangbeom Kim u8 alarm0_conf; 5615bccae6eSSangbeom Kim struct rtc_time tm; 5625bccae6eSSangbeom Kim 563f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 564f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5655bccae6eSSangbeom Kim if (ret < 0) 5665bccae6eSSangbeom Kim return ret; 5675bccae6eSSangbeom Kim 5685bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5695bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5705bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 5715bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 5725bccae6eSSangbeom Kim 5735bccae6eSSangbeom Kim switch (info->device_type) { 5745bccae6eSSangbeom Kim case S5M8763X: 5755bccae6eSSangbeom Kim alarm0_conf = 0x77; 576602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 5775bccae6eSSangbeom Kim break; 5785bccae6eSSangbeom Kim 5795bccae6eSSangbeom Kim case S5M8767X: 580a65e5efaSAlim Akhtar case S2MPS15X: 5810c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5825281f94aSKrzysztof Kozlowski case S2MPS13X: 5835bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 5845bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 5855bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 5865bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 5875bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 5885bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 5895bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 5905bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 5915bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 5925bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 5935bccae6eSSangbeom Kim 594f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 595f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5965bccae6eSSangbeom Kim if (ret < 0) 5975bccae6eSSangbeom Kim return ret; 5985bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5995bccae6eSSangbeom Kim 6005bccae6eSSangbeom Kim break; 6015bccae6eSSangbeom Kim 6025bccae6eSSangbeom Kim default: 6035bccae6eSSangbeom Kim return -EINVAL; 6045bccae6eSSangbeom Kim } 6055bccae6eSSangbeom Kim 6065bccae6eSSangbeom Kim return ret; 6075bccae6eSSangbeom Kim } 6085bccae6eSSangbeom Kim 6095bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 6105bccae6eSSangbeom Kim { 6115bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 612f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 6135bccae6eSSangbeom Kim int ret; 6145bccae6eSSangbeom Kim 6155bccae6eSSangbeom Kim switch (info->device_type) { 6165bccae6eSSangbeom Kim case S5M8763X: 6175bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 6185bccae6eSSangbeom Kim break; 6195bccae6eSSangbeom Kim 6205bccae6eSSangbeom Kim case S5M8767X: 621a65e5efaSAlim Akhtar case S2MPS15X: 6220c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6235281f94aSKrzysztof Kozlowski case S2MPS13X: 6245bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 6255bccae6eSSangbeom Kim break; 6265bccae6eSSangbeom Kim 6275bccae6eSSangbeom Kim default: 6285bccae6eSSangbeom Kim return -EINVAL; 6295bccae6eSSangbeom Kim } 6305bccae6eSSangbeom Kim 6315bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 6325bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 6335bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, 6345bccae6eSSangbeom Kim alrm->time.tm_sec, alrm->time.tm_wday); 6355bccae6eSSangbeom Kim 6365bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 6375bccae6eSSangbeom Kim if (ret < 0) 6385bccae6eSSangbeom Kim return ret; 6395bccae6eSSangbeom Kim 640f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 641f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 6425bccae6eSSangbeom Kim if (ret < 0) 6435bccae6eSSangbeom Kim return ret; 6445bccae6eSSangbeom Kim 6455bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 6465bccae6eSSangbeom Kim if (ret < 0) 6475bccae6eSSangbeom Kim return ret; 6485bccae6eSSangbeom Kim 6495bccae6eSSangbeom Kim if (alrm->enabled) 6505bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 6515bccae6eSSangbeom Kim 6525bccae6eSSangbeom Kim return ret; 6535bccae6eSSangbeom Kim } 6545bccae6eSSangbeom Kim 6555bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 6565bccae6eSSangbeom Kim unsigned int enabled) 6575bccae6eSSangbeom Kim { 6585bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 6595bccae6eSSangbeom Kim 6605bccae6eSSangbeom Kim if (enabled) 6615bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 6625bccae6eSSangbeom Kim else 6635bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 6645bccae6eSSangbeom Kim } 6655bccae6eSSangbeom Kim 6665bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 6675bccae6eSSangbeom Kim { 6685bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 6695bccae6eSSangbeom Kim 6705bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 6715bccae6eSSangbeom Kim 6725bccae6eSSangbeom Kim return IRQ_HANDLED; 6735bccae6eSSangbeom Kim } 6745bccae6eSSangbeom Kim 6755bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 6765bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 6775bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 6785bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 6795bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 6805bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 6815bccae6eSSangbeom Kim }; 6825bccae6eSSangbeom Kim 6835bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 6845bccae6eSSangbeom Kim { 6855bccae6eSSangbeom Kim u8 data[2]; 6865bccae6eSSangbeom Kim int ret; 6875bccae6eSSangbeom Kim 6880c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 6890c5deb1eSKrzysztof Kozlowski case S5M8763X: 6900c5deb1eSKrzysztof Kozlowski case S5M8767X: 6910c5f5d9aSKrzysztof Kozlowski /* UDR update time. Default of 7.32 ms is too long. */ 6920c5f5d9aSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 6930c5f5d9aSKrzysztof Kozlowski S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); 6940c5f5d9aSKrzysztof Kozlowski if (ret < 0) 6950c5f5d9aSKrzysztof Kozlowski dev_err(info->dev, "%s: fail to change UDR time: %d\n", 6960c5f5d9aSKrzysztof Kozlowski __func__, ret); 6970c5f5d9aSKrzysztof Kozlowski 6985bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 6995bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 7005bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 7015bccae6eSSangbeom Kim 702602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 7030c5deb1eSKrzysztof Kozlowski break; 7040c5deb1eSKrzysztof Kozlowski 705a65e5efaSAlim Akhtar case S2MPS15X: 7060c5deb1eSKrzysztof Kozlowski case S2MPS14X: 7075281f94aSKrzysztof Kozlowski case S2MPS13X: 7080c5deb1eSKrzysztof Kozlowski data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 7090c5deb1eSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); 710ff02c044SJoonyoung Shim if (ret < 0) 711ff02c044SJoonyoung Shim break; 712ff02c044SJoonyoung Shim 713ff02c044SJoonyoung Shim /* 714ff02c044SJoonyoung Shim * Should set WUDR & (RUDR or AUDR) bits to high after writing 715ff02c044SJoonyoung Shim * RTC_CTRL register like writing Alarm registers. We can't find 716ff02c044SJoonyoung Shim * the description from datasheet but vendor code does that 717ff02c044SJoonyoung Shim * really. 718ff02c044SJoonyoung Shim */ 719ff02c044SJoonyoung Shim ret = s5m8767_rtc_set_alarm_reg(info); 7200c5deb1eSKrzysztof Kozlowski break; 7210c5deb1eSKrzysztof Kozlowski 7220c5deb1eSKrzysztof Kozlowski default: 7230c5deb1eSKrzysztof Kozlowski return -EINVAL; 7240c5deb1eSKrzysztof Kozlowski } 7250c5deb1eSKrzysztof Kozlowski 7260c5deb1eSKrzysztof Kozlowski info->rtc_24hr_mode = 1; 7275bccae6eSSangbeom Kim if (ret < 0) { 7285bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 7295bccae6eSSangbeom Kim __func__, ret); 7305bccae6eSSangbeom Kim return ret; 7315bccae6eSSangbeom Kim } 7325bccae6eSSangbeom Kim 7335bccae6eSSangbeom Kim return ret; 7345bccae6eSSangbeom Kim } 7355bccae6eSSangbeom Kim 7365bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 7375bccae6eSSangbeom Kim { 7385bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 7395bccae6eSSangbeom Kim struct sec_platform_data *pdata = s5m87xx->pdata; 7405bccae6eSSangbeom Kim struct s5m_rtc_info *info; 741e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 742a0347f20SKrzysztof Kozlowski int ret, alarm_irq; 7435bccae6eSSangbeom Kim 7445bccae6eSSangbeom Kim if (!pdata) { 7455bccae6eSSangbeom Kim dev_err(pdev->dev.parent, "Platform data not supplied\n"); 7465bccae6eSSangbeom Kim return -ENODEV; 7475bccae6eSSangbeom Kim } 7485bccae6eSSangbeom Kim 7495bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 7505bccae6eSSangbeom Kim if (!info) 7515bccae6eSSangbeom Kim return -ENOMEM; 7525bccae6eSSangbeom Kim 75394f91922SKrzysztof Kozlowski switch (platform_get_device_id(pdev)->driver_data) { 754a65e5efaSAlim Akhtar case S2MPS15X: 7558ae83b6fSKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7568ae83b6fSKrzysztof Kozlowski info->regs = &s2mps15_rtc_regs; 7578ae83b6fSKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 7588ae83b6fSKrzysztof Kozlowski break; 759e349c910SKrzysztof Kozlowski case S2MPS14X: 7608ae83b6fSKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7618ae83b6fSKrzysztof Kozlowski info->regs = &s2mps14_rtc_regs; 7628ae83b6fSKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 7638ae83b6fSKrzysztof Kozlowski break; 7645281f94aSKrzysztof Kozlowski case S2MPS13X: 765e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7668ae83b6fSKrzysztof Kozlowski info->regs = &s2mps13_rtc_regs; 767a0347f20SKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 768e349c910SKrzysztof Kozlowski break; 769e349c910SKrzysztof Kozlowski case S5M8763X: 770e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 771f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 772a0347f20SKrzysztof Kozlowski alarm_irq = S5M8763_IRQ_ALARM0; 773e349c910SKrzysztof Kozlowski break; 774e349c910SKrzysztof Kozlowski case S5M8767X: 775e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 776f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 777a0347f20SKrzysztof Kozlowski alarm_irq = S5M8767_IRQ_RTCA1; 778e349c910SKrzysztof Kozlowski break; 779e349c910SKrzysztof Kozlowski default: 78094f91922SKrzysztof Kozlowski dev_err(&pdev->dev, 78194f91922SKrzysztof Kozlowski "Device type %lu is not supported by RTC driver\n", 78294f91922SKrzysztof Kozlowski platform_get_device_id(pdev)->driver_data); 783e349c910SKrzysztof Kozlowski return -ENODEV; 784e349c910SKrzysztof Kozlowski } 785e349c910SKrzysztof Kozlowski 786e349c910SKrzysztof Kozlowski info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); 787e349c910SKrzysztof Kozlowski if (!info->i2c) { 788e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 789e349c910SKrzysztof Kozlowski return -ENODEV; 790e349c910SKrzysztof Kozlowski } 791e349c910SKrzysztof Kozlowski 792e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 793e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 794e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 795e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 796e349c910SKrzysztof Kozlowski ret); 797e349c910SKrzysztof Kozlowski goto err; 798e349c910SKrzysztof Kozlowski } 799e349c910SKrzysztof Kozlowski 8005bccae6eSSangbeom Kim info->dev = &pdev->dev; 8015bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 80294f91922SKrzysztof Kozlowski info->device_type = platform_get_device_id(pdev)->driver_data; 8035bccae6eSSangbeom Kim 804b7d5b9a9SBartlomiej Zolnierkiewicz if (s5m87xx->irq_data) { 805a0347f20SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); 806a0347f20SKrzysztof Kozlowski if (info->irq <= 0) { 8075bccae6eSSangbeom Kim ret = -EINVAL; 808a0347f20SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", 809a0347f20SKrzysztof Kozlowski alarm_irq); 810e349c910SKrzysztof Kozlowski goto err; 8115bccae6eSSangbeom Kim } 812b7d5b9a9SBartlomiej Zolnierkiewicz } 8135bccae6eSSangbeom Kim 8145bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 8155bccae6eSSangbeom Kim 8165bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 8175bccae6eSSangbeom Kim 8185bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 8195bccae6eSSangbeom Kim 8205bccae6eSSangbeom Kim info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", 8215bccae6eSSangbeom Kim &s5m_rtc_ops, THIS_MODULE); 8225bccae6eSSangbeom Kim 823e349c910SKrzysztof Kozlowski if (IS_ERR(info->rtc_dev)) { 824e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->rtc_dev); 825e349c910SKrzysztof Kozlowski goto err; 826e349c910SKrzysztof Kozlowski } 8275bccae6eSSangbeom Kim 828b7d5b9a9SBartlomiej Zolnierkiewicz if (!info->irq) { 829b7d5b9a9SBartlomiej Zolnierkiewicz dev_info(&pdev->dev, "Alarm IRQ not available\n"); 830b7d5b9a9SBartlomiej Zolnierkiewicz return 0; 831b7d5b9a9SBartlomiej Zolnierkiewicz } 832b7d5b9a9SBartlomiej Zolnierkiewicz 8335bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 8345bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 8355bccae6eSSangbeom Kim info); 836e349c910SKrzysztof Kozlowski if (ret < 0) { 8375bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 8385bccae6eSSangbeom Kim info->irq, ret); 839e349c910SKrzysztof Kozlowski goto err; 840e349c910SKrzysztof Kozlowski } 841e349c910SKrzysztof Kozlowski 842e349c910SKrzysztof Kozlowski return 0; 843e349c910SKrzysztof Kozlowski 844e349c910SKrzysztof Kozlowski err: 845e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 8465bccae6eSSangbeom Kim 8475bccae6eSSangbeom Kim return ret; 8485bccae6eSSangbeom Kim } 8495bccae6eSSangbeom Kim 850e349c910SKrzysztof Kozlowski static int s5m_rtc_remove(struct platform_device *pdev) 851e349c910SKrzysztof Kozlowski { 852e349c910SKrzysztof Kozlowski struct s5m_rtc_info *info = platform_get_drvdata(pdev); 853e349c910SKrzysztof Kozlowski 854e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 855e349c910SKrzysztof Kozlowski 856e349c910SKrzysztof Kozlowski return 0; 857e349c910SKrzysztof Kozlowski } 858e349c910SKrzysztof Kozlowski 85911ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 860222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 861222ead7fSKrzysztof Kozlowski { 862222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 863222ead7fSKrzysztof Kozlowski int ret = 0; 864222ead7fSKrzysztof Kozlowski 865b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 866222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 867222ead7fSKrzysztof Kozlowski 868222ead7fSKrzysztof Kozlowski return ret; 869222ead7fSKrzysztof Kozlowski } 870222ead7fSKrzysztof Kozlowski 871222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(struct device *dev) 872222ead7fSKrzysztof Kozlowski { 873222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 874222ead7fSKrzysztof Kozlowski int ret = 0; 875222ead7fSKrzysztof Kozlowski 876b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 877222ead7fSKrzysztof Kozlowski ret = enable_irq_wake(info->irq); 878222ead7fSKrzysztof Kozlowski 879222ead7fSKrzysztof Kozlowski return ret; 880222ead7fSKrzysztof Kozlowski } 88111ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 882222ead7fSKrzysztof Kozlowski 883222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 884222ead7fSKrzysztof Kozlowski 8855bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 8860c5deb1eSKrzysztof Kozlowski { "s5m-rtc", S5M8767X }, 8875281f94aSKrzysztof Kozlowski { "s2mps13-rtc", S2MPS13X }, 8880c5deb1eSKrzysztof Kozlowski { "s2mps14-rtc", S2MPS14X }, 889a65e5efaSAlim Akhtar { "s2mps15-rtc", S2MPS15X }, 89045cd15e6SAndrey Ryabinin { }, 8915bccae6eSSangbeom Kim }; 89263074cc3SJavier Martinez Canillas MODULE_DEVICE_TABLE(platform, s5m_rtc_id); 8935bccae6eSSangbeom Kim 8945bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 8955bccae6eSSangbeom Kim .driver = { 8965bccae6eSSangbeom Kim .name = "s5m-rtc", 897222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 8985bccae6eSSangbeom Kim }, 8995bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 900e349c910SKrzysztof Kozlowski .remove = s5m_rtc_remove, 9015bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 9025bccae6eSSangbeom Kim }; 9035bccae6eSSangbeom Kim 9045bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 9055bccae6eSSangbeom Kim 9065bccae6eSSangbeom Kim /* Module information */ 9075bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 9080c5deb1eSKrzysztof Kozlowski MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); 9095bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 9105bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 911