126dcc12cSKrzysztof Kozlowski // SPDX-License-Identifier: GPL-2.0+ 226dcc12cSKrzysztof Kozlowski // 326dcc12cSKrzysztof Kozlowski // Copyright (c) 2013-2014 Samsung Electronics Co., Ltd 426dcc12cSKrzysztof Kozlowski // http://www.samsung.com 526dcc12cSKrzysztof Kozlowski // 626dcc12cSKrzysztof Kozlowski // Copyright (C) 2013 Google, Inc 75bccae6eSSangbeom Kim 8a737e835SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 9a737e835SJoe Perches 105bccae6eSSangbeom Kim #include <linux/module.h> 115bccae6eSSangbeom Kim #include <linux/i2c.h> 125bccae6eSSangbeom Kim #include <linux/bcd.h> 135bccae6eSSangbeom Kim #include <linux/regmap.h> 145bccae6eSSangbeom Kim #include <linux/rtc.h> 155bccae6eSSangbeom Kim #include <linux/platform_device.h> 165bccae6eSSangbeom Kim #include <linux/mfd/samsung/core.h> 175bccae6eSSangbeom Kim #include <linux/mfd/samsung/irq.h> 185bccae6eSSangbeom Kim #include <linux/mfd/samsung/rtc.h> 190c5deb1eSKrzysztof Kozlowski #include <linux/mfd/samsung/s2mps14.h> 205bccae6eSSangbeom Kim 21d73238d4SKrzysztof Kozlowski /* 22d73238d4SKrzysztof Kozlowski * Maximum number of retries for checking changes in UDR field 23602cb5bbSKrzysztof Kozlowski * of S5M_RTC_UDR_CON register (to limit possible endless loop). 24d73238d4SKrzysztof Kozlowski * 25d73238d4SKrzysztof Kozlowski * After writing to RTC registers (setting time or alarm) read the UDR field 26602cb5bbSKrzysztof Kozlowski * in S5M_RTC_UDR_CON register. UDR is auto-cleared when data have 27d73238d4SKrzysztof Kozlowski * been transferred. 28d73238d4SKrzysztof Kozlowski */ 29d73238d4SKrzysztof Kozlowski #define UDR_READ_RETRY_CNT 5 30d73238d4SKrzysztof Kozlowski 314a681243SGustavo A. R. Silva enum { 324a681243SGustavo A. R. Silva RTC_SEC = 0, 334a681243SGustavo A. R. Silva RTC_MIN, 344a681243SGustavo A. R. Silva RTC_HOUR, 354a681243SGustavo A. R. Silva RTC_WEEKDAY, 364a681243SGustavo A. R. Silva RTC_DATE, 374a681243SGustavo A. R. Silva RTC_MONTH, 384a681243SGustavo A. R. Silva RTC_YEAR1, 394a681243SGustavo A. R. Silva RTC_YEAR2, 40756d5282SGustavo A. R. Silva /* Make sure this is always the last enum name. */ 41756d5282SGustavo A. R. Silva RTC_MAX_NUM_TIME_REGS 424a681243SGustavo A. R. Silva }; 434a681243SGustavo A. R. Silva 448ae83b6fSKrzysztof Kozlowski /* 458ae83b6fSKrzysztof Kozlowski * Registers used by the driver which are different between chipsets. 468ae83b6fSKrzysztof Kozlowski * 478ae83b6fSKrzysztof Kozlowski * Operations like read time and write alarm/time require updating 488ae83b6fSKrzysztof Kozlowski * specific fields in UDR register. These fields usually are auto-cleared 498ae83b6fSKrzysztof Kozlowski * (with some exceptions). 508ae83b6fSKrzysztof Kozlowski * 518ae83b6fSKrzysztof Kozlowski * Table of operations per device: 528ae83b6fSKrzysztof Kozlowski * 538ae83b6fSKrzysztof Kozlowski * Device | Write time | Read time | Write alarm 548ae83b6fSKrzysztof Kozlowski * ================================================= 558ae83b6fSKrzysztof Kozlowski * S5M8767 | UDR + TIME | | UDR 568ae83b6fSKrzysztof Kozlowski * S2MPS11/14 | WUDR | RUDR | WUDR + RUDR 578ae83b6fSKrzysztof Kozlowski * S2MPS13 | WUDR | RUDR | WUDR + AUDR 588ae83b6fSKrzysztof Kozlowski * S2MPS15 | WUDR | RUDR | AUDR 598ae83b6fSKrzysztof Kozlowski */ 60f8b23bbdSKrzysztof Kozlowski struct s5m_rtc_reg_config { 61f8b23bbdSKrzysztof Kozlowski /* Number of registers used for setting time/alarm0/alarm1 */ 62f8b23bbdSKrzysztof Kozlowski unsigned int regs_count; 63f8b23bbdSKrzysztof Kozlowski /* First register for time, seconds */ 64f8b23bbdSKrzysztof Kozlowski unsigned int time; 65f8b23bbdSKrzysztof Kozlowski /* RTC control register */ 66f8b23bbdSKrzysztof Kozlowski unsigned int ctrl; 67f8b23bbdSKrzysztof Kozlowski /* First register for alarm 0, seconds */ 68f8b23bbdSKrzysztof Kozlowski unsigned int alarm0; 69f8b23bbdSKrzysztof Kozlowski /* First register for alarm 1, seconds */ 70f8b23bbdSKrzysztof Kozlowski unsigned int alarm1; 71f8b23bbdSKrzysztof Kozlowski /* 72f8b23bbdSKrzysztof Kozlowski * Register for update flag (UDR). Typically setting UDR field to 1 73f8b23bbdSKrzysztof Kozlowski * will enable update of time or alarm register. Then it will be 74f8b23bbdSKrzysztof Kozlowski * auto-cleared after successful update. 75f8b23bbdSKrzysztof Kozlowski */ 76a83a793aSKrzysztof Kozlowski unsigned int udr_update; 7767a6025aSKrzysztof Kozlowski /* Auto-cleared mask in UDR field for writing time and alarm */ 7867a6025aSKrzysztof Kozlowski unsigned int autoclear_udr_mask; 798ae83b6fSKrzysztof Kozlowski /* 808ae83b6fSKrzysztof Kozlowski * Masks in UDR field for time and alarm operations. 818ae83b6fSKrzysztof Kozlowski * The read time mask can be 0. Rest should not. 828ae83b6fSKrzysztof Kozlowski */ 838ae83b6fSKrzysztof Kozlowski unsigned int read_time_udr_mask; 848ae83b6fSKrzysztof Kozlowski unsigned int write_time_udr_mask; 858ae83b6fSKrzysztof Kozlowski unsigned int write_alarm_udr_mask; 86f8b23bbdSKrzysztof Kozlowski }; 87f8b23bbdSKrzysztof Kozlowski 88f8b23bbdSKrzysztof Kozlowski /* Register map for S5M8763 and S5M8767 */ 89f8b23bbdSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s5m_rtc_regs = { 90f8b23bbdSKrzysztof Kozlowski .regs_count = 8, 91f8b23bbdSKrzysztof Kozlowski .time = S5M_RTC_SEC, 92f8b23bbdSKrzysztof Kozlowski .ctrl = S5M_ALARM1_CONF, 93f8b23bbdSKrzysztof Kozlowski .alarm0 = S5M_ALARM0_SEC, 94f8b23bbdSKrzysztof Kozlowski .alarm1 = S5M_ALARM1_SEC, 95a83a793aSKrzysztof Kozlowski .udr_update = S5M_RTC_UDR_CON, 9667a6025aSKrzysztof Kozlowski .autoclear_udr_mask = S5M_RTC_UDR_MASK, 978ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = 0, /* Not needed */ 988ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S5M_RTC_UDR_MASK | S5M_RTC_TIME_EN_MASK, 998ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S5M_RTC_UDR_MASK, 100f8b23bbdSKrzysztof Kozlowski }; 101f8b23bbdSKrzysztof Kozlowski 1028ae83b6fSKrzysztof Kozlowski /* Register map for S2MPS13 */ 1038ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps13_rtc_regs = { 1040c5deb1eSKrzysztof Kozlowski .regs_count = 7, 1050c5deb1eSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1060c5deb1eSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1070c5deb1eSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1080c5deb1eSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 109a83a793aSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 11067a6025aSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1118ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1128ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS_RTC_WUDR_MASK, 1138ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS13_RTC_AUDR_MASK, 1148ae83b6fSKrzysztof Kozlowski }; 1158ae83b6fSKrzysztof Kozlowski 1168ae83b6fSKrzysztof Kozlowski /* Register map for S2MPS11/14 */ 1178ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps14_rtc_regs = { 1188ae83b6fSKrzysztof Kozlowski .regs_count = 7, 1198ae83b6fSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1208ae83b6fSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1218ae83b6fSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1228ae83b6fSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 1238ae83b6fSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 1248ae83b6fSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1258ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1268ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS_RTC_WUDR_MASK, 1278ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS_RTC_RUDR_MASK, 1288ae83b6fSKrzysztof Kozlowski }; 1298ae83b6fSKrzysztof Kozlowski 1308ae83b6fSKrzysztof Kozlowski /* 1318ae83b6fSKrzysztof Kozlowski * Register map for S2MPS15 - in comparison to S2MPS14 the WUDR and AUDR bits 1328ae83b6fSKrzysztof Kozlowski * are swapped. 1338ae83b6fSKrzysztof Kozlowski */ 1348ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps15_rtc_regs = { 1358ae83b6fSKrzysztof Kozlowski .regs_count = 7, 1368ae83b6fSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1378ae83b6fSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1388ae83b6fSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1398ae83b6fSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 1408ae83b6fSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 1418ae83b6fSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1428ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1438ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS15_RTC_WUDR_MASK, 1448ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS15_RTC_AUDR_MASK, 1450c5deb1eSKrzysztof Kozlowski }; 1460c5deb1eSKrzysztof Kozlowski 1475bccae6eSSangbeom Kim struct s5m_rtc_info { 1485bccae6eSSangbeom Kim struct device *dev; 149e349c910SKrzysztof Kozlowski struct i2c_client *i2c; 1505bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx; 1515ccb7d71SGeert Uytterhoeven struct regmap *regmap; 1525bccae6eSSangbeom Kim struct rtc_device *rtc_dev; 1535bccae6eSSangbeom Kim int irq; 15494f91922SKrzysztof Kozlowski enum sec_device_type device_type; 1555bccae6eSSangbeom Kim int rtc_24hr_mode; 156f8b23bbdSKrzysztof Kozlowski const struct s5m_rtc_reg_config *regs; 1575bccae6eSSangbeom Kim }; 1585bccae6eSSangbeom Kim 159e349c910SKrzysztof Kozlowski static const struct regmap_config s5m_rtc_regmap_config = { 160e349c910SKrzysztof Kozlowski .reg_bits = 8, 161e349c910SKrzysztof Kozlowski .val_bits = 8, 162e349c910SKrzysztof Kozlowski 163602cb5bbSKrzysztof Kozlowski .max_register = S5M_RTC_REG_MAX, 164e349c910SKrzysztof Kozlowski }; 165e349c910SKrzysztof Kozlowski 166e349c910SKrzysztof Kozlowski static const struct regmap_config s2mps14_rtc_regmap_config = { 167e349c910SKrzysztof Kozlowski .reg_bits = 8, 168e349c910SKrzysztof Kozlowski .val_bits = 8, 169e349c910SKrzysztof Kozlowski 170e349c910SKrzysztof Kozlowski .max_register = S2MPS_RTC_REG_MAX, 171e349c910SKrzysztof Kozlowski }; 172e349c910SKrzysztof Kozlowski 1735bccae6eSSangbeom Kim static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, 1745bccae6eSSangbeom Kim int rtc_24hr_mode) 1755bccae6eSSangbeom Kim { 1765bccae6eSSangbeom Kim tm->tm_sec = data[RTC_SEC] & 0x7f; 1775bccae6eSSangbeom Kim tm->tm_min = data[RTC_MIN] & 0x7f; 1785bccae6eSSangbeom Kim if (rtc_24hr_mode) { 1795bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x1f; 1805bccae6eSSangbeom Kim } else { 1815bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x0f; 1825bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM_MASK) 1835bccae6eSSangbeom Kim tm->tm_hour += 12; 1845bccae6eSSangbeom Kim } 1855bccae6eSSangbeom Kim 1865bccae6eSSangbeom Kim tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); 1875bccae6eSSangbeom Kim tm->tm_mday = data[RTC_DATE] & 0x1f; 1885bccae6eSSangbeom Kim tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; 1895bccae6eSSangbeom Kim tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; 1905bccae6eSSangbeom Kim tm->tm_yday = 0; 1915bccae6eSSangbeom Kim tm->tm_isdst = 0; 1925bccae6eSSangbeom Kim } 1935bccae6eSSangbeom Kim 1945bccae6eSSangbeom Kim static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 1955bccae6eSSangbeom Kim { 1965bccae6eSSangbeom Kim data[RTC_SEC] = tm->tm_sec; 1975bccae6eSSangbeom Kim data[RTC_MIN] = tm->tm_min; 1985bccae6eSSangbeom Kim 1995bccae6eSSangbeom Kim if (tm->tm_hour >= 12) 2005bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; 2015bccae6eSSangbeom Kim else 2025bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; 2035bccae6eSSangbeom Kim 2045bccae6eSSangbeom Kim data[RTC_WEEKDAY] = 1 << tm->tm_wday; 2055bccae6eSSangbeom Kim data[RTC_DATE] = tm->tm_mday; 2065bccae6eSSangbeom Kim data[RTC_MONTH] = tm->tm_mon + 1; 2075bccae6eSSangbeom Kim data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; 2085bccae6eSSangbeom Kim 2095bccae6eSSangbeom Kim if (tm->tm_year < 100) { 210a737e835SJoe Perches pr_err("RTC cannot handle the year %d\n", 2115bccae6eSSangbeom Kim 1900 + tm->tm_year); 2125bccae6eSSangbeom Kim return -EINVAL; 2135bccae6eSSangbeom Kim } else { 2145bccae6eSSangbeom Kim return 0; 2155bccae6eSSangbeom Kim } 2165bccae6eSSangbeom Kim } 2175bccae6eSSangbeom Kim 218d73238d4SKrzysztof Kozlowski /* 219d73238d4SKrzysztof Kozlowski * Read RTC_UDR_CON register and wait till UDR field is cleared. 220d73238d4SKrzysztof Kozlowski * This indicates that time/alarm update ended. 221d73238d4SKrzysztof Kozlowski */ 2228124c711SKrzysztof Kozlowski static int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) 223d73238d4SKrzysztof Kozlowski { 224d73238d4SKrzysztof Kozlowski int ret, retry = UDR_READ_RETRY_CNT; 225d73238d4SKrzysztof Kozlowski unsigned int data; 226d73238d4SKrzysztof Kozlowski 227d73238d4SKrzysztof Kozlowski do { 228a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 22967a6025aSKrzysztof Kozlowski } while (--retry && (data & info->regs->autoclear_udr_mask) && !ret); 230d73238d4SKrzysztof Kozlowski 231d73238d4SKrzysztof Kozlowski if (!retry) 232d73238d4SKrzysztof Kozlowski dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); 233d73238d4SKrzysztof Kozlowski 234d73238d4SKrzysztof Kozlowski return ret; 235d73238d4SKrzysztof Kozlowski } 236d73238d4SKrzysztof Kozlowski 2378124c711SKrzysztof Kozlowski static int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, 238f8b23bbdSKrzysztof Kozlowski struct rtc_wkalrm *alarm) 239f8b23bbdSKrzysztof Kozlowski { 240f8b23bbdSKrzysztof Kozlowski int ret; 241f8b23bbdSKrzysztof Kozlowski unsigned int val; 242f8b23bbdSKrzysztof Kozlowski 243f8b23bbdSKrzysztof Kozlowski switch (info->device_type) { 244f8b23bbdSKrzysztof Kozlowski case S5M8767X: 245f8b23bbdSKrzysztof Kozlowski case S5M8763X: 246f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 247f8b23bbdSKrzysztof Kozlowski val &= S5M_ALARM0_STATUS; 248f8b23bbdSKrzysztof Kozlowski break; 249a65e5efaSAlim Akhtar case S2MPS15X: 2500c5deb1eSKrzysztof Kozlowski case S2MPS14X: 2515281f94aSKrzysztof Kozlowski case S2MPS13X: 2520c5deb1eSKrzysztof Kozlowski ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, 2530c5deb1eSKrzysztof Kozlowski &val); 2540c5deb1eSKrzysztof Kozlowski val &= S2MPS_ALARM0_STATUS; 2550c5deb1eSKrzysztof Kozlowski break; 256f8b23bbdSKrzysztof Kozlowski default: 257f8b23bbdSKrzysztof Kozlowski return -EINVAL; 258f8b23bbdSKrzysztof Kozlowski } 259f8b23bbdSKrzysztof Kozlowski if (ret < 0) 260f8b23bbdSKrzysztof Kozlowski return ret; 261f8b23bbdSKrzysztof Kozlowski 262f8b23bbdSKrzysztof Kozlowski if (val) 263f8b23bbdSKrzysztof Kozlowski alarm->pending = 1; 264f8b23bbdSKrzysztof Kozlowski else 265f8b23bbdSKrzysztof Kozlowski alarm->pending = 0; 266f8b23bbdSKrzysztof Kozlowski 267f8b23bbdSKrzysztof Kozlowski return 0; 268f8b23bbdSKrzysztof Kozlowski } 269f8b23bbdSKrzysztof Kozlowski 2708124c711SKrzysztof Kozlowski static int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 2715bccae6eSSangbeom Kim { 2725bccae6eSSangbeom Kim int ret; 2735bccae6eSSangbeom Kim unsigned int data; 2745bccae6eSSangbeom Kim 275a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 2765bccae6eSSangbeom Kim if (ret < 0) { 2775bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 2785bccae6eSSangbeom Kim return ret; 2795bccae6eSSangbeom Kim } 2805bccae6eSSangbeom Kim 2818ae83b6fSKrzysztof Kozlowski data |= info->regs->write_time_udr_mask; 282a65e5efaSAlim Akhtar 283a83a793aSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->udr_update, data); 2845bccae6eSSangbeom Kim if (ret < 0) { 2855bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 2865bccae6eSSangbeom Kim return ret; 2875bccae6eSSangbeom Kim } 2885bccae6eSSangbeom Kim 289d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2905bccae6eSSangbeom Kim 2915bccae6eSSangbeom Kim return ret; 2925bccae6eSSangbeom Kim } 2935bccae6eSSangbeom Kim 2948124c711SKrzysztof Kozlowski static int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 2955bccae6eSSangbeom Kim { 2965bccae6eSSangbeom Kim int ret; 2975bccae6eSSangbeom Kim unsigned int data; 2985bccae6eSSangbeom Kim 299a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 3005bccae6eSSangbeom Kim if (ret < 0) { 3015bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 3025bccae6eSSangbeom Kim __func__, ret); 3035bccae6eSSangbeom Kim return ret; 3045bccae6eSSangbeom Kim } 3055bccae6eSSangbeom Kim 3068ae83b6fSKrzysztof Kozlowski data |= info->regs->write_alarm_udr_mask; 3070c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 3080c5deb1eSKrzysztof Kozlowski case S5M8763X: 3090c5deb1eSKrzysztof Kozlowski case S5M8767X: 3100c5deb1eSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 3110c5deb1eSKrzysztof Kozlowski break; 312a65e5efaSAlim Akhtar case S2MPS15X: 3130c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3145281f94aSKrzysztof Kozlowski case S2MPS13X: 3158ae83b6fSKrzysztof Kozlowski /* No exceptions needed */ 3165281f94aSKrzysztof Kozlowski break; 3170c5deb1eSKrzysztof Kozlowski default: 3180c5deb1eSKrzysztof Kozlowski return -EINVAL; 3190c5deb1eSKrzysztof Kozlowski } 3205bccae6eSSangbeom Kim 321a83a793aSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->udr_update, data); 3225bccae6eSSangbeom Kim if (ret < 0) { 3235bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 3245bccae6eSSangbeom Kim __func__, ret); 3255bccae6eSSangbeom Kim return ret; 3265bccae6eSSangbeom Kim } 3275bccae6eSSangbeom Kim 328d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 3295bccae6eSSangbeom Kim 3305281f94aSKrzysztof Kozlowski /* On S2MPS13 the AUDR is not auto-cleared */ 3315281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS13X) 332a83a793aSKrzysztof Kozlowski regmap_update_bits(info->regmap, info->regs->udr_update, 3335281f94aSKrzysztof Kozlowski S2MPS13_RTC_AUDR_MASK, 0); 3345281f94aSKrzysztof Kozlowski 3355bccae6eSSangbeom Kim return ret; 3365bccae6eSSangbeom Kim } 3375bccae6eSSangbeom Kim 3385bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 3395bccae6eSSangbeom Kim { 3405bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 3415bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 3425bccae6eSSangbeom Kim 3435bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 3445bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 3455bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 3465bccae6eSSangbeom Kim tm->tm_hour += 12; 3475bccae6eSSangbeom Kim } else { 3485bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 3495bccae6eSSangbeom Kim } 3505bccae6eSSangbeom Kim 3515bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 3525bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 3535bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 3545bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 3555bccae6eSSangbeom Kim tm->tm_year -= 1900; 3565bccae6eSSangbeom Kim } 3575bccae6eSSangbeom Kim 3585bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 3595bccae6eSSangbeom Kim { 3605bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 3615bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 3625bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 3635bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 3645bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 3655bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 3665bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 3675bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 3685bccae6eSSangbeom Kim } 3695bccae6eSSangbeom Kim 3705bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 3715bccae6eSSangbeom Kim { 3725bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 373756d5282SGustavo A. R. Silva u8 data[RTC_MAX_NUM_TIME_REGS]; 3745bccae6eSSangbeom Kim int ret; 3755bccae6eSSangbeom Kim 3768ae83b6fSKrzysztof Kozlowski if (info->regs->read_time_udr_mask) { 3770c5deb1eSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, 378a83a793aSKrzysztof Kozlowski info->regs->udr_update, 3798ae83b6fSKrzysztof Kozlowski info->regs->read_time_udr_mask, 3808ae83b6fSKrzysztof Kozlowski info->regs->read_time_udr_mask); 3810c5deb1eSKrzysztof Kozlowski if (ret) { 3820c5deb1eSKrzysztof Kozlowski dev_err(dev, 3830c5deb1eSKrzysztof Kozlowski "Failed to prepare registers for time reading: %d\n", 3840c5deb1eSKrzysztof Kozlowski ret); 3850c5deb1eSKrzysztof Kozlowski return ret; 3860c5deb1eSKrzysztof Kozlowski } 3870c5deb1eSKrzysztof Kozlowski } 388f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->time, data, 389f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3905bccae6eSSangbeom Kim if (ret < 0) 3915bccae6eSSangbeom Kim return ret; 3925bccae6eSSangbeom Kim 3935bccae6eSSangbeom Kim switch (info->device_type) { 3945bccae6eSSangbeom Kim case S5M8763X: 3955bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 3965bccae6eSSangbeom Kim break; 3975bccae6eSSangbeom Kim 3985bccae6eSSangbeom Kim case S5M8767X: 399a65e5efaSAlim Akhtar case S2MPS15X: 4000c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4015281f94aSKrzysztof Kozlowski case S2MPS13X: 4025bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 4035bccae6eSSangbeom Kim break; 4045bccae6eSSangbeom Kim 4055bccae6eSSangbeom Kim default: 4065bccae6eSSangbeom Kim return -EINVAL; 4075bccae6eSSangbeom Kim } 4085bccae6eSSangbeom Kim 4095527842eSAndy Shevchenko dev_dbg(dev, "%s: %ptR(%d)\n", __func__, tm, tm->tm_wday); 4105bccae6eSSangbeom Kim 41122652ba7SAlexandre Belloni return 0; 4125bccae6eSSangbeom Kim } 4135bccae6eSSangbeom Kim 4145bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 4155bccae6eSSangbeom Kim { 4165bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 417756d5282SGustavo A. R. Silva u8 data[RTC_MAX_NUM_TIME_REGS]; 4185bccae6eSSangbeom Kim int ret = 0; 4195bccae6eSSangbeom Kim 4205bccae6eSSangbeom Kim switch (info->device_type) { 4215bccae6eSSangbeom Kim case S5M8763X: 4225bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 4235bccae6eSSangbeom Kim break; 4245bccae6eSSangbeom Kim case S5M8767X: 425a65e5efaSAlim Akhtar case S2MPS15X: 4260c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4275281f94aSKrzysztof Kozlowski case S2MPS13X: 4285bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 4295bccae6eSSangbeom Kim break; 4305bccae6eSSangbeom Kim default: 4315bccae6eSSangbeom Kim return -EINVAL; 4325bccae6eSSangbeom Kim } 4335bccae6eSSangbeom Kim 4345bccae6eSSangbeom Kim if (ret < 0) 4355bccae6eSSangbeom Kim return ret; 4365bccae6eSSangbeom Kim 4375527842eSAndy Shevchenko dev_dbg(dev, "%s: %ptR(%d)\n", __func__, tm, tm->tm_wday); 4385bccae6eSSangbeom Kim 439f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->time, data, 440f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4415bccae6eSSangbeom Kim if (ret < 0) 4425bccae6eSSangbeom Kim return ret; 4435bccae6eSSangbeom Kim 4445bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 4455bccae6eSSangbeom Kim 4465bccae6eSSangbeom Kim return ret; 4475bccae6eSSangbeom Kim } 4485bccae6eSSangbeom Kim 4495bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 4505bccae6eSSangbeom Kim { 4515bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 452756d5282SGustavo A. R. Silva u8 data[RTC_MAX_NUM_TIME_REGS]; 4535bccae6eSSangbeom Kim unsigned int val; 4545bccae6eSSangbeom Kim int ret, i; 4555bccae6eSSangbeom Kim 456f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 457f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4585bccae6eSSangbeom Kim if (ret < 0) 4595bccae6eSSangbeom Kim return ret; 4605bccae6eSSangbeom Kim 4615bccae6eSSangbeom Kim switch (info->device_type) { 4625bccae6eSSangbeom Kim case S5M8763X: 4635bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 464602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 4655bccae6eSSangbeom Kim if (ret < 0) 4665bccae6eSSangbeom Kim return ret; 4675bccae6eSSangbeom Kim 4685bccae6eSSangbeom Kim alrm->enabled = !!val; 4695bccae6eSSangbeom Kim break; 4705bccae6eSSangbeom Kim 4715bccae6eSSangbeom Kim case S5M8767X: 472a65e5efaSAlim Akhtar case S2MPS15X: 4730c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4745281f94aSKrzysztof Kozlowski case S2MPS13X: 4755bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 4765bccae6eSSangbeom Kim alrm->enabled = 0; 477f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) { 4785bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 4795bccae6eSSangbeom Kim alrm->enabled = 1; 4805bccae6eSSangbeom Kim break; 4815bccae6eSSangbeom Kim } 4825bccae6eSSangbeom Kim } 4835bccae6eSSangbeom Kim break; 4845bccae6eSSangbeom Kim 4855bccae6eSSangbeom Kim default: 4865bccae6eSSangbeom Kim return -EINVAL; 4875bccae6eSSangbeom Kim } 4885bccae6eSSangbeom Kim 4895527842eSAndy Shevchenko dev_dbg(dev, "%s: %ptR(%d)\n", __func__, &alrm->time, alrm->time.tm_wday); 490f8b23bbdSKrzysztof Kozlowski 491f2581b1dSNobuhiro Iwamatsu return s5m_check_peding_alarm_interrupt(info, alrm); 4925bccae6eSSangbeom Kim } 4935bccae6eSSangbeom Kim 4945bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 4955bccae6eSSangbeom Kim { 496756d5282SGustavo A. R. Silva u8 data[RTC_MAX_NUM_TIME_REGS]; 4975bccae6eSSangbeom Kim int ret, i; 4985bccae6eSSangbeom Kim struct rtc_time tm; 4995bccae6eSSangbeom Kim 500f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 501f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5025bccae6eSSangbeom Kim if (ret < 0) 5035bccae6eSSangbeom Kim return ret; 5045bccae6eSSangbeom Kim 5055bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5065527842eSAndy Shevchenko dev_dbg(info->dev, "%s: %ptR(%d)\n", __func__, &tm, tm.tm_wday); 5075bccae6eSSangbeom Kim 5085bccae6eSSangbeom Kim switch (info->device_type) { 5095bccae6eSSangbeom Kim case S5M8763X: 510602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 5115bccae6eSSangbeom Kim break; 5125bccae6eSSangbeom Kim 5135bccae6eSSangbeom Kim case S5M8767X: 514a65e5efaSAlim Akhtar case S2MPS15X: 5150c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5165281f94aSKrzysztof Kozlowski case S2MPS13X: 517f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) 5185bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 5195bccae6eSSangbeom Kim 520f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 521f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5225bccae6eSSangbeom Kim if (ret < 0) 5235bccae6eSSangbeom Kim return ret; 5245bccae6eSSangbeom Kim 5255bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5265bccae6eSSangbeom Kim 5275bccae6eSSangbeom Kim break; 5285bccae6eSSangbeom Kim 5295bccae6eSSangbeom Kim default: 5305bccae6eSSangbeom Kim return -EINVAL; 5315bccae6eSSangbeom Kim } 5325bccae6eSSangbeom Kim 5335bccae6eSSangbeom Kim return ret; 5345bccae6eSSangbeom Kim } 5355bccae6eSSangbeom Kim 5365bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 5375bccae6eSSangbeom Kim { 5385bccae6eSSangbeom Kim int ret; 539756d5282SGustavo A. R. Silva u8 data[RTC_MAX_NUM_TIME_REGS]; 5405bccae6eSSangbeom Kim u8 alarm0_conf; 5415bccae6eSSangbeom Kim struct rtc_time tm; 5425bccae6eSSangbeom Kim 543f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 544f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5455bccae6eSSangbeom Kim if (ret < 0) 5465bccae6eSSangbeom Kim return ret; 5475bccae6eSSangbeom Kim 5485bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5495527842eSAndy Shevchenko dev_dbg(info->dev, "%s: %ptR(%d)\n", __func__, &tm, tm.tm_wday); 5505bccae6eSSangbeom Kim 5515bccae6eSSangbeom Kim switch (info->device_type) { 5525bccae6eSSangbeom Kim case S5M8763X: 5535bccae6eSSangbeom Kim alarm0_conf = 0x77; 554602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 5555bccae6eSSangbeom Kim break; 5565bccae6eSSangbeom Kim 5575bccae6eSSangbeom Kim case S5M8767X: 558a65e5efaSAlim Akhtar case S2MPS15X: 5590c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5605281f94aSKrzysztof Kozlowski case S2MPS13X: 5615bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 5625bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 5635bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 5645bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 5655bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 5665bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 5675bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 5685bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 5695bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 5705bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 5715bccae6eSSangbeom Kim 572f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 573f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5745bccae6eSSangbeom Kim if (ret < 0) 5755bccae6eSSangbeom Kim return ret; 5765bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5775bccae6eSSangbeom Kim 5785bccae6eSSangbeom Kim break; 5795bccae6eSSangbeom Kim 5805bccae6eSSangbeom Kim default: 5815bccae6eSSangbeom Kim return -EINVAL; 5825bccae6eSSangbeom Kim } 5835bccae6eSSangbeom Kim 5845bccae6eSSangbeom Kim return ret; 5855bccae6eSSangbeom Kim } 5865bccae6eSSangbeom Kim 5875bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 5885bccae6eSSangbeom Kim { 5895bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 590756d5282SGustavo A. R. Silva u8 data[RTC_MAX_NUM_TIME_REGS]; 5915bccae6eSSangbeom Kim int ret; 5925bccae6eSSangbeom Kim 5935bccae6eSSangbeom Kim switch (info->device_type) { 5945bccae6eSSangbeom Kim case S5M8763X: 5955bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 5965bccae6eSSangbeom Kim break; 5975bccae6eSSangbeom Kim 5985bccae6eSSangbeom Kim case S5M8767X: 599a65e5efaSAlim Akhtar case S2MPS15X: 6000c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6015281f94aSKrzysztof Kozlowski case S2MPS13X: 6025bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 6035bccae6eSSangbeom Kim break; 6045bccae6eSSangbeom Kim 6055bccae6eSSangbeom Kim default: 6065bccae6eSSangbeom Kim return -EINVAL; 6075bccae6eSSangbeom Kim } 6085bccae6eSSangbeom Kim 6095527842eSAndy Shevchenko dev_dbg(dev, "%s: %ptR(%d)\n", __func__, &alrm->time, alrm->time.tm_wday); 6105bccae6eSSangbeom Kim 6115bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 6125bccae6eSSangbeom Kim if (ret < 0) 6135bccae6eSSangbeom Kim return ret; 6145bccae6eSSangbeom Kim 615f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 616f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 6175bccae6eSSangbeom Kim if (ret < 0) 6185bccae6eSSangbeom Kim return ret; 6195bccae6eSSangbeom Kim 6205bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 6215bccae6eSSangbeom Kim if (ret < 0) 6225bccae6eSSangbeom Kim return ret; 6235bccae6eSSangbeom Kim 6245bccae6eSSangbeom Kim if (alrm->enabled) 6255bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 6265bccae6eSSangbeom Kim 6275bccae6eSSangbeom Kim return ret; 6285bccae6eSSangbeom Kim } 6295bccae6eSSangbeom Kim 6305bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 6315bccae6eSSangbeom Kim unsigned int enabled) 6325bccae6eSSangbeom Kim { 6335bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 6345bccae6eSSangbeom Kim 6355bccae6eSSangbeom Kim if (enabled) 6365bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 6375bccae6eSSangbeom Kim else 6385bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 6395bccae6eSSangbeom Kim } 6405bccae6eSSangbeom Kim 6415bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 6425bccae6eSSangbeom Kim { 6435bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 6445bccae6eSSangbeom Kim 6455bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 6465bccae6eSSangbeom Kim 6475bccae6eSSangbeom Kim return IRQ_HANDLED; 6485bccae6eSSangbeom Kim } 6495bccae6eSSangbeom Kim 6505bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 6515bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 6525bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 6535bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 6545bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 6555bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 6565bccae6eSSangbeom Kim }; 6575bccae6eSSangbeom Kim 6585bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 6595bccae6eSSangbeom Kim { 6605bccae6eSSangbeom Kim u8 data[2]; 6615bccae6eSSangbeom Kim int ret; 6625bccae6eSSangbeom Kim 6630c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 6640c5deb1eSKrzysztof Kozlowski case S5M8763X: 6650c5deb1eSKrzysztof Kozlowski case S5M8767X: 6660c5f5d9aSKrzysztof Kozlowski /* UDR update time. Default of 7.32 ms is too long. */ 6670c5f5d9aSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 6680c5f5d9aSKrzysztof Kozlowski S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); 6690c5f5d9aSKrzysztof Kozlowski if (ret < 0) 6700c5f5d9aSKrzysztof Kozlowski dev_err(info->dev, "%s: fail to change UDR time: %d\n", 6710c5f5d9aSKrzysztof Kozlowski __func__, ret); 6720c5f5d9aSKrzysztof Kozlowski 6735bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 6745bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6755bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6765bccae6eSSangbeom Kim 677602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 6780c5deb1eSKrzysztof Kozlowski break; 6790c5deb1eSKrzysztof Kozlowski 680a65e5efaSAlim Akhtar case S2MPS15X: 6810c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6825281f94aSKrzysztof Kozlowski case S2MPS13X: 6830c5deb1eSKrzysztof Kozlowski data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6840c5deb1eSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); 685ff02c044SJoonyoung Shim if (ret < 0) 686ff02c044SJoonyoung Shim break; 687ff02c044SJoonyoung Shim 688ff02c044SJoonyoung Shim /* 689ff02c044SJoonyoung Shim * Should set WUDR & (RUDR or AUDR) bits to high after writing 690ff02c044SJoonyoung Shim * RTC_CTRL register like writing Alarm registers. We can't find 691ff02c044SJoonyoung Shim * the description from datasheet but vendor code does that 692ff02c044SJoonyoung Shim * really. 693ff02c044SJoonyoung Shim */ 694ff02c044SJoonyoung Shim ret = s5m8767_rtc_set_alarm_reg(info); 6950c5deb1eSKrzysztof Kozlowski break; 6960c5deb1eSKrzysztof Kozlowski 6970c5deb1eSKrzysztof Kozlowski default: 6980c5deb1eSKrzysztof Kozlowski return -EINVAL; 6990c5deb1eSKrzysztof Kozlowski } 7000c5deb1eSKrzysztof Kozlowski 7010c5deb1eSKrzysztof Kozlowski info->rtc_24hr_mode = 1; 7025bccae6eSSangbeom Kim if (ret < 0) { 7035bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 7045bccae6eSSangbeom Kim __func__, ret); 7055bccae6eSSangbeom Kim return ret; 7065bccae6eSSangbeom Kim } 7075bccae6eSSangbeom Kim 7085bccae6eSSangbeom Kim return ret; 7095bccae6eSSangbeom Kim } 7105bccae6eSSangbeom Kim 7115bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 7125bccae6eSSangbeom Kim { 7135bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 7145bccae6eSSangbeom Kim struct s5m_rtc_info *info; 715e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 716a0347f20SKrzysztof Kozlowski int ret, alarm_irq; 7175bccae6eSSangbeom Kim 7185bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 7195bccae6eSSangbeom Kim if (!info) 7205bccae6eSSangbeom Kim return -ENOMEM; 7215bccae6eSSangbeom Kim 72294f91922SKrzysztof Kozlowski switch (platform_get_device_id(pdev)->driver_data) { 723a65e5efaSAlim Akhtar case S2MPS15X: 7248ae83b6fSKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7258ae83b6fSKrzysztof Kozlowski info->regs = &s2mps15_rtc_regs; 7268ae83b6fSKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 7278ae83b6fSKrzysztof Kozlowski break; 728e349c910SKrzysztof Kozlowski case S2MPS14X: 7298ae83b6fSKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7308ae83b6fSKrzysztof Kozlowski info->regs = &s2mps14_rtc_regs; 7318ae83b6fSKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 7328ae83b6fSKrzysztof Kozlowski break; 7335281f94aSKrzysztof Kozlowski case S2MPS13X: 734e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7358ae83b6fSKrzysztof Kozlowski info->regs = &s2mps13_rtc_regs; 736a0347f20SKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 737e349c910SKrzysztof Kozlowski break; 738e349c910SKrzysztof Kozlowski case S5M8763X: 739e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 740f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 741a0347f20SKrzysztof Kozlowski alarm_irq = S5M8763_IRQ_ALARM0; 742e349c910SKrzysztof Kozlowski break; 743e349c910SKrzysztof Kozlowski case S5M8767X: 744e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 745f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 746a0347f20SKrzysztof Kozlowski alarm_irq = S5M8767_IRQ_RTCA1; 747e349c910SKrzysztof Kozlowski break; 748e349c910SKrzysztof Kozlowski default: 74994f91922SKrzysztof Kozlowski dev_err(&pdev->dev, 75094f91922SKrzysztof Kozlowski "Device type %lu is not supported by RTC driver\n", 75194f91922SKrzysztof Kozlowski platform_get_device_id(pdev)->driver_data); 752e349c910SKrzysztof Kozlowski return -ENODEV; 753e349c910SKrzysztof Kozlowski } 754e349c910SKrzysztof Kozlowski 7557db7ad08SBartosz Golaszewski info->i2c = devm_i2c_new_dummy_device(&pdev->dev, s5m87xx->i2c->adapter, 7567db7ad08SBartosz Golaszewski RTC_I2C_ADDR); 757aae364d2SWolfram Sang if (IS_ERR(info->i2c)) { 758e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 759aae364d2SWolfram Sang return PTR_ERR(info->i2c); 760e349c910SKrzysztof Kozlowski } 761e349c910SKrzysztof Kozlowski 762e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 763e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 764e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 765e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 766e349c910SKrzysztof Kozlowski ret); 7677db7ad08SBartosz Golaszewski return ret; 768e349c910SKrzysztof Kozlowski } 769e349c910SKrzysztof Kozlowski 7705bccae6eSSangbeom Kim info->dev = &pdev->dev; 7715bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 77294f91922SKrzysztof Kozlowski info->device_type = platform_get_device_id(pdev)->driver_data; 7735bccae6eSSangbeom Kim 774b7d5b9a9SBartlomiej Zolnierkiewicz if (s5m87xx->irq_data) { 775a0347f20SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); 776a0347f20SKrzysztof Kozlowski if (info->irq <= 0) { 777a0347f20SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", 778a0347f20SKrzysztof Kozlowski alarm_irq); 7797db7ad08SBartosz Golaszewski return -EINVAL; 7805bccae6eSSangbeom Kim } 781b7d5b9a9SBartlomiej Zolnierkiewicz } 7825bccae6eSSangbeom Kim 7835bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 7845bccae6eSSangbeom Kim 7855bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 7863be95d27SBartosz Golaszewski if (ret) 7873be95d27SBartosz Golaszewski return ret; 7885bccae6eSSangbeom Kim 7895bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 7905bccae6eSSangbeom Kim 791dae68c6bSAlexandre Belloni info->rtc_dev = devm_rtc_allocate_device(&pdev->dev); 7927db7ad08SBartosz Golaszewski if (IS_ERR(info->rtc_dev)) 7937db7ad08SBartosz Golaszewski return PTR_ERR(info->rtc_dev); 7945bccae6eSSangbeom Kim 795dae68c6bSAlexandre Belloni info->rtc_dev->ops = &s5m_rtc_ops; 796dae68c6bSAlexandre Belloni 797b7d5b9a9SBartlomiej Zolnierkiewicz if (!info->irq) { 798*1ed4dba2SAlexandre Belloni clear_bit(RTC_FEATURE_ALARM, info->rtc_dev->features); 799*1ed4dba2SAlexandre Belloni } else { 8005bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 8015bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 8025bccae6eSSangbeom Kim info); 803e349c910SKrzysztof Kozlowski if (ret < 0) { 8045bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 8055bccae6eSSangbeom Kim info->irq, ret); 8065bccae6eSSangbeom Kim return ret; 8075bccae6eSSangbeom Kim } 808*1ed4dba2SAlexandre Belloni } 8095bccae6eSSangbeom Kim 810*1ed4dba2SAlexandre Belloni return devm_rtc_register_device(info->rtc_dev); 811e349c910SKrzysztof Kozlowski } 812e349c910SKrzysztof Kozlowski 81311ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 814222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 815222ead7fSKrzysztof Kozlowski { 816222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 817222ead7fSKrzysztof Kozlowski int ret = 0; 818222ead7fSKrzysztof Kozlowski 819b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 820222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 821222ead7fSKrzysztof Kozlowski 822222ead7fSKrzysztof Kozlowski return ret; 823222ead7fSKrzysztof Kozlowski } 824222ead7fSKrzysztof Kozlowski 825222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(struct device *dev) 826222ead7fSKrzysztof Kozlowski { 827222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 828222ead7fSKrzysztof Kozlowski int ret = 0; 829222ead7fSKrzysztof Kozlowski 830b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 831222ead7fSKrzysztof Kozlowski ret = enable_irq_wake(info->irq); 832222ead7fSKrzysztof Kozlowski 833222ead7fSKrzysztof Kozlowski return ret; 834222ead7fSKrzysztof Kozlowski } 83511ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 836222ead7fSKrzysztof Kozlowski 837222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 838222ead7fSKrzysztof Kozlowski 8395bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 8400c5deb1eSKrzysztof Kozlowski { "s5m-rtc", S5M8767X }, 8415281f94aSKrzysztof Kozlowski { "s2mps13-rtc", S2MPS13X }, 8420c5deb1eSKrzysztof Kozlowski { "s2mps14-rtc", S2MPS14X }, 843a65e5efaSAlim Akhtar { "s2mps15-rtc", S2MPS15X }, 84445cd15e6SAndrey Ryabinin { }, 8455bccae6eSSangbeom Kim }; 84663074cc3SJavier Martinez Canillas MODULE_DEVICE_TABLE(platform, s5m_rtc_id); 8475bccae6eSSangbeom Kim 8485bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 8495bccae6eSSangbeom Kim .driver = { 8505bccae6eSSangbeom Kim .name = "s5m-rtc", 851222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 8525bccae6eSSangbeom Kim }, 8535bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 8545bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 8555bccae6eSSangbeom Kim }; 8565bccae6eSSangbeom Kim 8575bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 8585bccae6eSSangbeom Kim 8595bccae6eSSangbeom Kim /* Module information */ 8605bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 8610c5deb1eSKrzysztof Kozlowski MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); 8625bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 8635bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 864