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 418ae83b6fSKrzysztof Kozlowski /* 428ae83b6fSKrzysztof Kozlowski * Registers used by the driver which are different between chipsets. 438ae83b6fSKrzysztof Kozlowski * 448ae83b6fSKrzysztof Kozlowski * Operations like read time and write alarm/time require updating 458ae83b6fSKrzysztof Kozlowski * specific fields in UDR register. These fields usually are auto-cleared 468ae83b6fSKrzysztof Kozlowski * (with some exceptions). 478ae83b6fSKrzysztof Kozlowski * 488ae83b6fSKrzysztof Kozlowski * Table of operations per device: 498ae83b6fSKrzysztof Kozlowski * 508ae83b6fSKrzysztof Kozlowski * Device | Write time | Read time | Write alarm 518ae83b6fSKrzysztof Kozlowski * ================================================= 528ae83b6fSKrzysztof Kozlowski * S5M8767 | UDR + TIME | | UDR 538ae83b6fSKrzysztof Kozlowski * S2MPS11/14 | WUDR | RUDR | WUDR + RUDR 548ae83b6fSKrzysztof Kozlowski * S2MPS13 | WUDR | RUDR | WUDR + AUDR 558ae83b6fSKrzysztof Kozlowski * S2MPS15 | WUDR | RUDR | AUDR 568ae83b6fSKrzysztof Kozlowski */ 57f8b23bbdSKrzysztof Kozlowski struct s5m_rtc_reg_config { 58f8b23bbdSKrzysztof Kozlowski /* Number of registers used for setting time/alarm0/alarm1 */ 59f8b23bbdSKrzysztof Kozlowski unsigned int regs_count; 60f8b23bbdSKrzysztof Kozlowski /* First register for time, seconds */ 61f8b23bbdSKrzysztof Kozlowski unsigned int time; 62f8b23bbdSKrzysztof Kozlowski /* RTC control register */ 63f8b23bbdSKrzysztof Kozlowski unsigned int ctrl; 64f8b23bbdSKrzysztof Kozlowski /* First register for alarm 0, seconds */ 65f8b23bbdSKrzysztof Kozlowski unsigned int alarm0; 66f8b23bbdSKrzysztof Kozlowski /* First register for alarm 1, seconds */ 67f8b23bbdSKrzysztof Kozlowski unsigned int alarm1; 68f8b23bbdSKrzysztof Kozlowski /* 69f8b23bbdSKrzysztof Kozlowski * Register for update flag (UDR). Typically setting UDR field to 1 70f8b23bbdSKrzysztof Kozlowski * will enable update of time or alarm register. Then it will be 71f8b23bbdSKrzysztof Kozlowski * auto-cleared after successful update. 72f8b23bbdSKrzysztof Kozlowski */ 73a83a793aSKrzysztof Kozlowski unsigned int udr_update; 7467a6025aSKrzysztof Kozlowski /* Auto-cleared mask in UDR field for writing time and alarm */ 7567a6025aSKrzysztof Kozlowski unsigned int autoclear_udr_mask; 768ae83b6fSKrzysztof Kozlowski /* 778ae83b6fSKrzysztof Kozlowski * Masks in UDR field for time and alarm operations. 788ae83b6fSKrzysztof Kozlowski * The read time mask can be 0. Rest should not. 798ae83b6fSKrzysztof Kozlowski */ 808ae83b6fSKrzysztof Kozlowski unsigned int read_time_udr_mask; 818ae83b6fSKrzysztof Kozlowski unsigned int write_time_udr_mask; 828ae83b6fSKrzysztof Kozlowski unsigned int write_alarm_udr_mask; 83f8b23bbdSKrzysztof Kozlowski }; 84f8b23bbdSKrzysztof Kozlowski 85f8b23bbdSKrzysztof Kozlowski /* Register map for S5M8763 and S5M8767 */ 86f8b23bbdSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s5m_rtc_regs = { 87f8b23bbdSKrzysztof Kozlowski .regs_count = 8, 88f8b23bbdSKrzysztof Kozlowski .time = S5M_RTC_SEC, 89f8b23bbdSKrzysztof Kozlowski .ctrl = S5M_ALARM1_CONF, 90f8b23bbdSKrzysztof Kozlowski .alarm0 = S5M_ALARM0_SEC, 91f8b23bbdSKrzysztof Kozlowski .alarm1 = S5M_ALARM1_SEC, 92a83a793aSKrzysztof Kozlowski .udr_update = S5M_RTC_UDR_CON, 9367a6025aSKrzysztof Kozlowski .autoclear_udr_mask = S5M_RTC_UDR_MASK, 948ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = 0, /* Not needed */ 958ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S5M_RTC_UDR_MASK | S5M_RTC_TIME_EN_MASK, 968ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S5M_RTC_UDR_MASK, 97f8b23bbdSKrzysztof Kozlowski }; 98f8b23bbdSKrzysztof Kozlowski 998ae83b6fSKrzysztof Kozlowski /* Register map for S2MPS13 */ 1008ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps13_rtc_regs = { 1010c5deb1eSKrzysztof Kozlowski .regs_count = 7, 1020c5deb1eSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1030c5deb1eSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1040c5deb1eSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1050c5deb1eSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 106a83a793aSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 10767a6025aSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1088ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1098ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS_RTC_WUDR_MASK, 1108ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS13_RTC_AUDR_MASK, 1118ae83b6fSKrzysztof Kozlowski }; 1128ae83b6fSKrzysztof Kozlowski 1138ae83b6fSKrzysztof Kozlowski /* Register map for S2MPS11/14 */ 1148ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps14_rtc_regs = { 1158ae83b6fSKrzysztof Kozlowski .regs_count = 7, 1168ae83b6fSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1178ae83b6fSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1188ae83b6fSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1198ae83b6fSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 1208ae83b6fSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 1218ae83b6fSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1228ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1238ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS_RTC_WUDR_MASK, 1248ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS_RTC_RUDR_MASK, 1258ae83b6fSKrzysztof Kozlowski }; 1268ae83b6fSKrzysztof Kozlowski 1278ae83b6fSKrzysztof Kozlowski /* 1288ae83b6fSKrzysztof Kozlowski * Register map for S2MPS15 - in comparison to S2MPS14 the WUDR and AUDR bits 1298ae83b6fSKrzysztof Kozlowski * are swapped. 1308ae83b6fSKrzysztof Kozlowski */ 1318ae83b6fSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps15_rtc_regs = { 1328ae83b6fSKrzysztof Kozlowski .regs_count = 7, 1338ae83b6fSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 1348ae83b6fSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 1358ae83b6fSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 1368ae83b6fSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 1378ae83b6fSKrzysztof Kozlowski .udr_update = S2MPS_RTC_UDR_CON, 1388ae83b6fSKrzysztof Kozlowski .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK, 1398ae83b6fSKrzysztof Kozlowski .read_time_udr_mask = S2MPS_RTC_RUDR_MASK, 1408ae83b6fSKrzysztof Kozlowski .write_time_udr_mask = S2MPS15_RTC_WUDR_MASK, 1418ae83b6fSKrzysztof Kozlowski .write_alarm_udr_mask = S2MPS15_RTC_AUDR_MASK, 1420c5deb1eSKrzysztof Kozlowski }; 1430c5deb1eSKrzysztof Kozlowski 1445bccae6eSSangbeom Kim struct s5m_rtc_info { 1455bccae6eSSangbeom Kim struct device *dev; 146e349c910SKrzysztof Kozlowski struct i2c_client *i2c; 1475bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx; 1485ccb7d71SGeert Uytterhoeven struct regmap *regmap; 1495bccae6eSSangbeom Kim struct rtc_device *rtc_dev; 1505bccae6eSSangbeom Kim int irq; 15194f91922SKrzysztof Kozlowski enum sec_device_type device_type; 1525bccae6eSSangbeom Kim int rtc_24hr_mode; 153f8b23bbdSKrzysztof Kozlowski const struct s5m_rtc_reg_config *regs; 1545bccae6eSSangbeom Kim }; 1555bccae6eSSangbeom Kim 156e349c910SKrzysztof Kozlowski static const struct regmap_config s5m_rtc_regmap_config = { 157e349c910SKrzysztof Kozlowski .reg_bits = 8, 158e349c910SKrzysztof Kozlowski .val_bits = 8, 159e349c910SKrzysztof Kozlowski 160602cb5bbSKrzysztof Kozlowski .max_register = S5M_RTC_REG_MAX, 161e349c910SKrzysztof Kozlowski }; 162e349c910SKrzysztof Kozlowski 163e349c910SKrzysztof Kozlowski static const struct regmap_config s2mps14_rtc_regmap_config = { 164e349c910SKrzysztof Kozlowski .reg_bits = 8, 165e349c910SKrzysztof Kozlowski .val_bits = 8, 166e349c910SKrzysztof Kozlowski 167e349c910SKrzysztof Kozlowski .max_register = S2MPS_RTC_REG_MAX, 168e349c910SKrzysztof Kozlowski }; 169e349c910SKrzysztof Kozlowski 1705bccae6eSSangbeom Kim static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, 1715bccae6eSSangbeom Kim int rtc_24hr_mode) 1725bccae6eSSangbeom Kim { 1735bccae6eSSangbeom Kim tm->tm_sec = data[RTC_SEC] & 0x7f; 1745bccae6eSSangbeom Kim tm->tm_min = data[RTC_MIN] & 0x7f; 1755bccae6eSSangbeom Kim if (rtc_24hr_mode) { 1765bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x1f; 1775bccae6eSSangbeom Kim } else { 1785bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x0f; 1795bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM_MASK) 1805bccae6eSSangbeom Kim tm->tm_hour += 12; 1815bccae6eSSangbeom Kim } 1825bccae6eSSangbeom Kim 1835bccae6eSSangbeom Kim tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); 1845bccae6eSSangbeom Kim tm->tm_mday = data[RTC_DATE] & 0x1f; 1855bccae6eSSangbeom Kim tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; 1865bccae6eSSangbeom Kim tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; 1875bccae6eSSangbeom Kim tm->tm_yday = 0; 1885bccae6eSSangbeom Kim tm->tm_isdst = 0; 1895bccae6eSSangbeom Kim } 1905bccae6eSSangbeom Kim 1915bccae6eSSangbeom Kim static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 1925bccae6eSSangbeom Kim { 1935bccae6eSSangbeom Kim data[RTC_SEC] = tm->tm_sec; 1945bccae6eSSangbeom Kim data[RTC_MIN] = tm->tm_min; 1955bccae6eSSangbeom Kim 1965bccae6eSSangbeom Kim if (tm->tm_hour >= 12) 1975bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; 1985bccae6eSSangbeom Kim else 1995bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; 2005bccae6eSSangbeom Kim 2015bccae6eSSangbeom Kim data[RTC_WEEKDAY] = 1 << tm->tm_wday; 2025bccae6eSSangbeom Kim data[RTC_DATE] = tm->tm_mday; 2035bccae6eSSangbeom Kim data[RTC_MONTH] = tm->tm_mon + 1; 2045bccae6eSSangbeom Kim data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; 2055bccae6eSSangbeom Kim 2065bccae6eSSangbeom Kim if (tm->tm_year < 100) { 207a737e835SJoe Perches pr_err("RTC cannot handle the year %d\n", 2085bccae6eSSangbeom Kim 1900 + tm->tm_year); 2095bccae6eSSangbeom Kim return -EINVAL; 2105bccae6eSSangbeom Kim } else { 2115bccae6eSSangbeom Kim return 0; 2125bccae6eSSangbeom Kim } 2135bccae6eSSangbeom Kim } 2145bccae6eSSangbeom Kim 215d73238d4SKrzysztof Kozlowski /* 216d73238d4SKrzysztof Kozlowski * Read RTC_UDR_CON register and wait till UDR field is cleared. 217d73238d4SKrzysztof Kozlowski * This indicates that time/alarm update ended. 218d73238d4SKrzysztof Kozlowski */ 2198124c711SKrzysztof Kozlowski static int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) 220d73238d4SKrzysztof Kozlowski { 221d73238d4SKrzysztof Kozlowski int ret, retry = UDR_READ_RETRY_CNT; 222d73238d4SKrzysztof Kozlowski unsigned int data; 223d73238d4SKrzysztof Kozlowski 224d73238d4SKrzysztof Kozlowski do { 225a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 22667a6025aSKrzysztof Kozlowski } while (--retry && (data & info->regs->autoclear_udr_mask) && !ret); 227d73238d4SKrzysztof Kozlowski 228d73238d4SKrzysztof Kozlowski if (!retry) 229d73238d4SKrzysztof Kozlowski dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); 230d73238d4SKrzysztof Kozlowski 231d73238d4SKrzysztof Kozlowski return ret; 232d73238d4SKrzysztof Kozlowski } 233d73238d4SKrzysztof Kozlowski 2348124c711SKrzysztof Kozlowski static int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, 235f8b23bbdSKrzysztof Kozlowski struct rtc_wkalrm *alarm) 236f8b23bbdSKrzysztof Kozlowski { 237f8b23bbdSKrzysztof Kozlowski int ret; 238f8b23bbdSKrzysztof Kozlowski unsigned int val; 239f8b23bbdSKrzysztof Kozlowski 240f8b23bbdSKrzysztof Kozlowski switch (info->device_type) { 241f8b23bbdSKrzysztof Kozlowski case S5M8767X: 242f8b23bbdSKrzysztof Kozlowski case S5M8763X: 243f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 244f8b23bbdSKrzysztof Kozlowski val &= S5M_ALARM0_STATUS; 245f8b23bbdSKrzysztof Kozlowski break; 246a65e5efaSAlim Akhtar case S2MPS15X: 2470c5deb1eSKrzysztof Kozlowski case S2MPS14X: 2485281f94aSKrzysztof Kozlowski case S2MPS13X: 2490c5deb1eSKrzysztof Kozlowski ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, 2500c5deb1eSKrzysztof Kozlowski &val); 2510c5deb1eSKrzysztof Kozlowski val &= S2MPS_ALARM0_STATUS; 2520c5deb1eSKrzysztof Kozlowski break; 253f8b23bbdSKrzysztof Kozlowski default: 254f8b23bbdSKrzysztof Kozlowski return -EINVAL; 255f8b23bbdSKrzysztof Kozlowski } 256f8b23bbdSKrzysztof Kozlowski if (ret < 0) 257f8b23bbdSKrzysztof Kozlowski return ret; 258f8b23bbdSKrzysztof Kozlowski 259f8b23bbdSKrzysztof Kozlowski if (val) 260f8b23bbdSKrzysztof Kozlowski alarm->pending = 1; 261f8b23bbdSKrzysztof Kozlowski else 262f8b23bbdSKrzysztof Kozlowski alarm->pending = 0; 263f8b23bbdSKrzysztof Kozlowski 264f8b23bbdSKrzysztof Kozlowski return 0; 265f8b23bbdSKrzysztof Kozlowski } 266f8b23bbdSKrzysztof Kozlowski 2678124c711SKrzysztof Kozlowski static int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 2685bccae6eSSangbeom Kim { 2695bccae6eSSangbeom Kim int ret; 2705bccae6eSSangbeom Kim unsigned int data; 2715bccae6eSSangbeom Kim 272a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 2735bccae6eSSangbeom Kim if (ret < 0) { 2745bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 2755bccae6eSSangbeom Kim return ret; 2765bccae6eSSangbeom Kim } 2775bccae6eSSangbeom Kim 2788ae83b6fSKrzysztof Kozlowski data |= info->regs->write_time_udr_mask; 279a65e5efaSAlim Akhtar 280a83a793aSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->udr_update, data); 2815bccae6eSSangbeom Kim if (ret < 0) { 2825bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 2835bccae6eSSangbeom Kim return ret; 2845bccae6eSSangbeom Kim } 2855bccae6eSSangbeom Kim 286d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2875bccae6eSSangbeom Kim 2885bccae6eSSangbeom Kim return ret; 2895bccae6eSSangbeom Kim } 2905bccae6eSSangbeom Kim 2918124c711SKrzysztof Kozlowski static int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 2925bccae6eSSangbeom Kim { 2935bccae6eSSangbeom Kim int ret; 2945bccae6eSSangbeom Kim unsigned int data; 2955bccae6eSSangbeom Kim 296a83a793aSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->udr_update, &data); 2975bccae6eSSangbeom Kim if (ret < 0) { 2985bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 2995bccae6eSSangbeom Kim __func__, ret); 3005bccae6eSSangbeom Kim return ret; 3015bccae6eSSangbeom Kim } 3025bccae6eSSangbeom Kim 3038ae83b6fSKrzysztof Kozlowski data |= info->regs->write_alarm_udr_mask; 3040c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 3050c5deb1eSKrzysztof Kozlowski case S5M8763X: 3060c5deb1eSKrzysztof Kozlowski case S5M8767X: 3070c5deb1eSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 3080c5deb1eSKrzysztof Kozlowski break; 309a65e5efaSAlim Akhtar case S2MPS15X: 3100c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3115281f94aSKrzysztof Kozlowski case S2MPS13X: 3128ae83b6fSKrzysztof Kozlowski /* No exceptions needed */ 3135281f94aSKrzysztof Kozlowski break; 3140c5deb1eSKrzysztof Kozlowski default: 3150c5deb1eSKrzysztof Kozlowski return -EINVAL; 3160c5deb1eSKrzysztof Kozlowski } 3175bccae6eSSangbeom Kim 318a83a793aSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->udr_update, data); 3195bccae6eSSangbeom Kim if (ret < 0) { 3205bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 3215bccae6eSSangbeom Kim __func__, ret); 3225bccae6eSSangbeom Kim return ret; 3235bccae6eSSangbeom Kim } 3245bccae6eSSangbeom Kim 325d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 3265bccae6eSSangbeom Kim 3275281f94aSKrzysztof Kozlowski /* On S2MPS13 the AUDR is not auto-cleared */ 3285281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS13X) 329a83a793aSKrzysztof Kozlowski regmap_update_bits(info->regmap, info->regs->udr_update, 3305281f94aSKrzysztof Kozlowski S2MPS13_RTC_AUDR_MASK, 0); 3315281f94aSKrzysztof Kozlowski 3325bccae6eSSangbeom Kim return ret; 3335bccae6eSSangbeom Kim } 3345bccae6eSSangbeom Kim 3355bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 3365bccae6eSSangbeom Kim { 3375bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 3385bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 3395bccae6eSSangbeom Kim 3405bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 3415bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 3425bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 3435bccae6eSSangbeom Kim tm->tm_hour += 12; 3445bccae6eSSangbeom Kim } else { 3455bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 3465bccae6eSSangbeom Kim } 3475bccae6eSSangbeom Kim 3485bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 3495bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 3505bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 3515bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 3525bccae6eSSangbeom Kim tm->tm_year -= 1900; 3535bccae6eSSangbeom Kim } 3545bccae6eSSangbeom Kim 3555bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 3565bccae6eSSangbeom Kim { 3575bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 3585bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 3595bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 3605bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 3615bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 3625bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 3635bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 3645bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 3655bccae6eSSangbeom Kim } 3665bccae6eSSangbeom Kim 3675bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 3685bccae6eSSangbeom Kim { 3695bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 370f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3715bccae6eSSangbeom Kim int ret; 3725bccae6eSSangbeom Kim 3738ae83b6fSKrzysztof Kozlowski if (info->regs->read_time_udr_mask) { 3740c5deb1eSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, 375a83a793aSKrzysztof Kozlowski info->regs->udr_update, 3768ae83b6fSKrzysztof Kozlowski info->regs->read_time_udr_mask, 3778ae83b6fSKrzysztof Kozlowski info->regs->read_time_udr_mask); 3780c5deb1eSKrzysztof Kozlowski if (ret) { 3790c5deb1eSKrzysztof Kozlowski dev_err(dev, 3800c5deb1eSKrzysztof Kozlowski "Failed to prepare registers for time reading: %d\n", 3810c5deb1eSKrzysztof Kozlowski ret); 3820c5deb1eSKrzysztof Kozlowski return ret; 3830c5deb1eSKrzysztof Kozlowski } 3840c5deb1eSKrzysztof Kozlowski } 385f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->time, data, 386f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3875bccae6eSSangbeom Kim if (ret < 0) 3885bccae6eSSangbeom Kim return ret; 3895bccae6eSSangbeom Kim 3905bccae6eSSangbeom Kim switch (info->device_type) { 3915bccae6eSSangbeom Kim case S5M8763X: 3925bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 3935bccae6eSSangbeom Kim break; 3945bccae6eSSangbeom Kim 3955bccae6eSSangbeom Kim case S5M8767X: 396a65e5efaSAlim Akhtar case S2MPS15X: 3970c5deb1eSKrzysztof Kozlowski case S2MPS14X: 3985281f94aSKrzysztof Kozlowski case S2MPS13X: 3995bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 4005bccae6eSSangbeom Kim break; 4015bccae6eSSangbeom Kim 4025bccae6eSSangbeom Kim default: 4035bccae6eSSangbeom Kim return -EINVAL; 4045bccae6eSSangbeom Kim } 4055bccae6eSSangbeom Kim 4065bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4075bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 4085bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 4095bccae6eSSangbeom Kim 410*22652ba7SAlexandre Belloni return 0; 4115bccae6eSSangbeom Kim } 4125bccae6eSSangbeom Kim 4135bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 4145bccae6eSSangbeom Kim { 4155bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 416f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4175bccae6eSSangbeom Kim int ret = 0; 4185bccae6eSSangbeom Kim 4195bccae6eSSangbeom Kim switch (info->device_type) { 4205bccae6eSSangbeom Kim case S5M8763X: 4215bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 4225bccae6eSSangbeom Kim break; 4235bccae6eSSangbeom Kim case S5M8767X: 424a65e5efaSAlim Akhtar case S2MPS15X: 4250c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4265281f94aSKrzysztof Kozlowski case S2MPS13X: 4275bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 4285bccae6eSSangbeom Kim break; 4295bccae6eSSangbeom Kim default: 4305bccae6eSSangbeom Kim return -EINVAL; 4315bccae6eSSangbeom Kim } 4325bccae6eSSangbeom Kim 4335bccae6eSSangbeom Kim if (ret < 0) 4345bccae6eSSangbeom Kim return ret; 4355bccae6eSSangbeom Kim 4365bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4375bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 4385bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 4395bccae6eSSangbeom Kim 440f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->time, data, 441f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4425bccae6eSSangbeom Kim if (ret < 0) 4435bccae6eSSangbeom Kim return ret; 4445bccae6eSSangbeom Kim 4455bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 4465bccae6eSSangbeom Kim 4475bccae6eSSangbeom Kim return ret; 4485bccae6eSSangbeom Kim } 4495bccae6eSSangbeom Kim 4505bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 4515bccae6eSSangbeom Kim { 4525bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 453f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4545bccae6eSSangbeom Kim unsigned int val; 4555bccae6eSSangbeom Kim int ret, i; 4565bccae6eSSangbeom Kim 457f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 458f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4595bccae6eSSangbeom Kim if (ret < 0) 4605bccae6eSSangbeom Kim return ret; 4615bccae6eSSangbeom Kim 4625bccae6eSSangbeom Kim switch (info->device_type) { 4635bccae6eSSangbeom Kim case S5M8763X: 4645bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 465602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 4665bccae6eSSangbeom Kim if (ret < 0) 4675bccae6eSSangbeom Kim return ret; 4685bccae6eSSangbeom Kim 4695bccae6eSSangbeom Kim alrm->enabled = !!val; 4705bccae6eSSangbeom Kim break; 4715bccae6eSSangbeom Kim 4725bccae6eSSangbeom Kim case S5M8767X: 473a65e5efaSAlim Akhtar case S2MPS15X: 4740c5deb1eSKrzysztof Kozlowski case S2MPS14X: 4755281f94aSKrzysztof Kozlowski case S2MPS13X: 4765bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 4775bccae6eSSangbeom Kim alrm->enabled = 0; 478f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) { 4795bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 4805bccae6eSSangbeom Kim alrm->enabled = 1; 4815bccae6eSSangbeom Kim break; 4825bccae6eSSangbeom Kim } 4835bccae6eSSangbeom Kim } 4845bccae6eSSangbeom Kim break; 4855bccae6eSSangbeom Kim 4865bccae6eSSangbeom Kim default: 4875bccae6eSSangbeom Kim return -EINVAL; 4885bccae6eSSangbeom Kim } 4895bccae6eSSangbeom Kim 490f8b23bbdSKrzysztof Kozlowski dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 491f8b23bbdSKrzysztof Kozlowski 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 492f8b23bbdSKrzysztof Kozlowski alrm->time.tm_mday, alrm->time.tm_hour, 493f8b23bbdSKrzysztof Kozlowski alrm->time.tm_min, alrm->time.tm_sec, 494f8b23bbdSKrzysztof Kozlowski alrm->time.tm_wday); 495f8b23bbdSKrzysztof Kozlowski 496f8b23bbdSKrzysztof Kozlowski ret = s5m_check_peding_alarm_interrupt(info, alrm); 4975bccae6eSSangbeom Kim 4985bccae6eSSangbeom Kim return 0; 4995bccae6eSSangbeom Kim } 5005bccae6eSSangbeom Kim 5015bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 5025bccae6eSSangbeom Kim { 503f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5045bccae6eSSangbeom Kim int ret, i; 5055bccae6eSSangbeom Kim struct rtc_time tm; 5065bccae6eSSangbeom Kim 507f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 508f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5095bccae6eSSangbeom Kim if (ret < 0) 5105bccae6eSSangbeom Kim return ret; 5115bccae6eSSangbeom Kim 5125bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5135bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5145bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 5155bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 5165bccae6eSSangbeom Kim 5175bccae6eSSangbeom Kim switch (info->device_type) { 5185bccae6eSSangbeom Kim case S5M8763X: 519602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 5205bccae6eSSangbeom Kim break; 5215bccae6eSSangbeom Kim 5225bccae6eSSangbeom Kim case S5M8767X: 523a65e5efaSAlim Akhtar case S2MPS15X: 5240c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5255281f94aSKrzysztof Kozlowski case S2MPS13X: 526f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) 5275bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 5285bccae6eSSangbeom Kim 529f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 530f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5315bccae6eSSangbeom Kim if (ret < 0) 5325bccae6eSSangbeom Kim return ret; 5335bccae6eSSangbeom Kim 5345bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5355bccae6eSSangbeom Kim 5365bccae6eSSangbeom Kim break; 5375bccae6eSSangbeom Kim 5385bccae6eSSangbeom Kim default: 5395bccae6eSSangbeom Kim return -EINVAL; 5405bccae6eSSangbeom Kim } 5415bccae6eSSangbeom Kim 5425bccae6eSSangbeom Kim return ret; 5435bccae6eSSangbeom Kim } 5445bccae6eSSangbeom Kim 5455bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 5465bccae6eSSangbeom Kim { 5475bccae6eSSangbeom Kim int ret; 548f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5495bccae6eSSangbeom Kim u8 alarm0_conf; 5505bccae6eSSangbeom Kim struct rtc_time tm; 5515bccae6eSSangbeom Kim 552f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 553f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5545bccae6eSSangbeom Kim if (ret < 0) 5555bccae6eSSangbeom Kim return ret; 5565bccae6eSSangbeom Kim 5575bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 5585bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5595bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 5605bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 5615bccae6eSSangbeom Kim 5625bccae6eSSangbeom Kim switch (info->device_type) { 5635bccae6eSSangbeom Kim case S5M8763X: 5645bccae6eSSangbeom Kim alarm0_conf = 0x77; 565602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 5665bccae6eSSangbeom Kim break; 5675bccae6eSSangbeom Kim 5685bccae6eSSangbeom Kim case S5M8767X: 569a65e5efaSAlim Akhtar case S2MPS15X: 5700c5deb1eSKrzysztof Kozlowski case S2MPS14X: 5715281f94aSKrzysztof Kozlowski case S2MPS13X: 5725bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 5735bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 5745bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 5755bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 5765bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 5775bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 5785bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 5795bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 5805bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 5815bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 5825bccae6eSSangbeom Kim 583f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 584f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5855bccae6eSSangbeom Kim if (ret < 0) 5865bccae6eSSangbeom Kim return ret; 5875bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5885bccae6eSSangbeom Kim 5895bccae6eSSangbeom Kim break; 5905bccae6eSSangbeom Kim 5915bccae6eSSangbeom Kim default: 5925bccae6eSSangbeom Kim return -EINVAL; 5935bccae6eSSangbeom Kim } 5945bccae6eSSangbeom Kim 5955bccae6eSSangbeom Kim return ret; 5965bccae6eSSangbeom Kim } 5975bccae6eSSangbeom Kim 5985bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 5995bccae6eSSangbeom Kim { 6005bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 601f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 6025bccae6eSSangbeom Kim int ret; 6035bccae6eSSangbeom Kim 6045bccae6eSSangbeom Kim switch (info->device_type) { 6055bccae6eSSangbeom Kim case S5M8763X: 6065bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 6075bccae6eSSangbeom Kim break; 6085bccae6eSSangbeom Kim 6095bccae6eSSangbeom Kim case S5M8767X: 610a65e5efaSAlim Akhtar case S2MPS15X: 6110c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6125281f94aSKrzysztof Kozlowski case S2MPS13X: 6135bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 6145bccae6eSSangbeom Kim break; 6155bccae6eSSangbeom Kim 6165bccae6eSSangbeom Kim default: 6175bccae6eSSangbeom Kim return -EINVAL; 6185bccae6eSSangbeom Kim } 6195bccae6eSSangbeom Kim 6205bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 6215bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 6225bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, 6235bccae6eSSangbeom Kim alrm->time.tm_sec, alrm->time.tm_wday); 6245bccae6eSSangbeom Kim 6255bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 6265bccae6eSSangbeom Kim if (ret < 0) 6275bccae6eSSangbeom Kim return ret; 6285bccae6eSSangbeom Kim 629f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 630f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 6315bccae6eSSangbeom Kim if (ret < 0) 6325bccae6eSSangbeom Kim return ret; 6335bccae6eSSangbeom Kim 6345bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 6355bccae6eSSangbeom Kim if (ret < 0) 6365bccae6eSSangbeom Kim return ret; 6375bccae6eSSangbeom Kim 6385bccae6eSSangbeom Kim if (alrm->enabled) 6395bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 6405bccae6eSSangbeom Kim 6415bccae6eSSangbeom Kim return ret; 6425bccae6eSSangbeom Kim } 6435bccae6eSSangbeom Kim 6445bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 6455bccae6eSSangbeom Kim unsigned int enabled) 6465bccae6eSSangbeom Kim { 6475bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 6485bccae6eSSangbeom Kim 6495bccae6eSSangbeom Kim if (enabled) 6505bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 6515bccae6eSSangbeom Kim else 6525bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 6535bccae6eSSangbeom Kim } 6545bccae6eSSangbeom Kim 6555bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 6565bccae6eSSangbeom Kim { 6575bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 6585bccae6eSSangbeom Kim 6595bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 6605bccae6eSSangbeom Kim 6615bccae6eSSangbeom Kim return IRQ_HANDLED; 6625bccae6eSSangbeom Kim } 6635bccae6eSSangbeom Kim 6645bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 6655bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 6665bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 6675bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 6685bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 6695bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 6705bccae6eSSangbeom Kim }; 6715bccae6eSSangbeom Kim 6725bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 6735bccae6eSSangbeom Kim { 6745bccae6eSSangbeom Kim u8 data[2]; 6755bccae6eSSangbeom Kim int ret; 6765bccae6eSSangbeom Kim 6770c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 6780c5deb1eSKrzysztof Kozlowski case S5M8763X: 6790c5deb1eSKrzysztof Kozlowski case S5M8767X: 6800c5f5d9aSKrzysztof Kozlowski /* UDR update time. Default of 7.32 ms is too long. */ 6810c5f5d9aSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 6820c5f5d9aSKrzysztof Kozlowski S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); 6830c5f5d9aSKrzysztof Kozlowski if (ret < 0) 6840c5f5d9aSKrzysztof Kozlowski dev_err(info->dev, "%s: fail to change UDR time: %d\n", 6850c5f5d9aSKrzysztof Kozlowski __func__, ret); 6860c5f5d9aSKrzysztof Kozlowski 6875bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 6885bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6895bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6905bccae6eSSangbeom Kim 691602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 6920c5deb1eSKrzysztof Kozlowski break; 6930c5deb1eSKrzysztof Kozlowski 694a65e5efaSAlim Akhtar case S2MPS15X: 6950c5deb1eSKrzysztof Kozlowski case S2MPS14X: 6965281f94aSKrzysztof Kozlowski case S2MPS13X: 6970c5deb1eSKrzysztof Kozlowski data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6980c5deb1eSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); 699ff02c044SJoonyoung Shim if (ret < 0) 700ff02c044SJoonyoung Shim break; 701ff02c044SJoonyoung Shim 702ff02c044SJoonyoung Shim /* 703ff02c044SJoonyoung Shim * Should set WUDR & (RUDR or AUDR) bits to high after writing 704ff02c044SJoonyoung Shim * RTC_CTRL register like writing Alarm registers. We can't find 705ff02c044SJoonyoung Shim * the description from datasheet but vendor code does that 706ff02c044SJoonyoung Shim * really. 707ff02c044SJoonyoung Shim */ 708ff02c044SJoonyoung Shim ret = s5m8767_rtc_set_alarm_reg(info); 7090c5deb1eSKrzysztof Kozlowski break; 7100c5deb1eSKrzysztof Kozlowski 7110c5deb1eSKrzysztof Kozlowski default: 7120c5deb1eSKrzysztof Kozlowski return -EINVAL; 7130c5deb1eSKrzysztof Kozlowski } 7140c5deb1eSKrzysztof Kozlowski 7150c5deb1eSKrzysztof Kozlowski info->rtc_24hr_mode = 1; 7165bccae6eSSangbeom Kim if (ret < 0) { 7175bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 7185bccae6eSSangbeom Kim __func__, ret); 7195bccae6eSSangbeom Kim return ret; 7205bccae6eSSangbeom Kim } 7215bccae6eSSangbeom Kim 7225bccae6eSSangbeom Kim return ret; 7235bccae6eSSangbeom Kim } 7245bccae6eSSangbeom Kim 7255bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 7265bccae6eSSangbeom Kim { 7275bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 7285bccae6eSSangbeom Kim struct sec_platform_data *pdata = s5m87xx->pdata; 7295bccae6eSSangbeom Kim struct s5m_rtc_info *info; 730e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 731a0347f20SKrzysztof Kozlowski int ret, alarm_irq; 7325bccae6eSSangbeom Kim 7335bccae6eSSangbeom Kim if (!pdata) { 7345bccae6eSSangbeom Kim dev_err(pdev->dev.parent, "Platform data not supplied\n"); 7355bccae6eSSangbeom Kim return -ENODEV; 7365bccae6eSSangbeom Kim } 7375bccae6eSSangbeom Kim 7385bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 7395bccae6eSSangbeom Kim if (!info) 7405bccae6eSSangbeom Kim return -ENOMEM; 7415bccae6eSSangbeom Kim 74294f91922SKrzysztof Kozlowski switch (platform_get_device_id(pdev)->driver_data) { 743a65e5efaSAlim Akhtar case S2MPS15X: 7448ae83b6fSKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7458ae83b6fSKrzysztof Kozlowski info->regs = &s2mps15_rtc_regs; 7468ae83b6fSKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 7478ae83b6fSKrzysztof Kozlowski break; 748e349c910SKrzysztof Kozlowski case S2MPS14X: 7498ae83b6fSKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7508ae83b6fSKrzysztof Kozlowski info->regs = &s2mps14_rtc_regs; 7518ae83b6fSKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 7528ae83b6fSKrzysztof Kozlowski break; 7535281f94aSKrzysztof Kozlowski case S2MPS13X: 754e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 7558ae83b6fSKrzysztof Kozlowski info->regs = &s2mps13_rtc_regs; 756a0347f20SKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 757e349c910SKrzysztof Kozlowski break; 758e349c910SKrzysztof Kozlowski case S5M8763X: 759e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 760f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 761a0347f20SKrzysztof Kozlowski alarm_irq = S5M8763_IRQ_ALARM0; 762e349c910SKrzysztof Kozlowski break; 763e349c910SKrzysztof Kozlowski case S5M8767X: 764e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 765f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 766a0347f20SKrzysztof Kozlowski alarm_irq = S5M8767_IRQ_RTCA1; 767e349c910SKrzysztof Kozlowski break; 768e349c910SKrzysztof Kozlowski default: 76994f91922SKrzysztof Kozlowski dev_err(&pdev->dev, 77094f91922SKrzysztof Kozlowski "Device type %lu is not supported by RTC driver\n", 77194f91922SKrzysztof Kozlowski platform_get_device_id(pdev)->driver_data); 772e349c910SKrzysztof Kozlowski return -ENODEV; 773e349c910SKrzysztof Kozlowski } 774e349c910SKrzysztof Kozlowski 775e349c910SKrzysztof Kozlowski info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); 776e349c910SKrzysztof Kozlowski if (!info->i2c) { 777e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 778e349c910SKrzysztof Kozlowski return -ENODEV; 779e349c910SKrzysztof Kozlowski } 780e349c910SKrzysztof Kozlowski 781e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 782e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 783e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 784e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 785e349c910SKrzysztof Kozlowski ret); 786e349c910SKrzysztof Kozlowski goto err; 787e349c910SKrzysztof Kozlowski } 788e349c910SKrzysztof Kozlowski 7895bccae6eSSangbeom Kim info->dev = &pdev->dev; 7905bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 79194f91922SKrzysztof Kozlowski info->device_type = platform_get_device_id(pdev)->driver_data; 7925bccae6eSSangbeom Kim 793b7d5b9a9SBartlomiej Zolnierkiewicz if (s5m87xx->irq_data) { 794a0347f20SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); 795a0347f20SKrzysztof Kozlowski if (info->irq <= 0) { 7965bccae6eSSangbeom Kim ret = -EINVAL; 797a0347f20SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", 798a0347f20SKrzysztof Kozlowski alarm_irq); 799e349c910SKrzysztof Kozlowski goto err; 8005bccae6eSSangbeom Kim } 801b7d5b9a9SBartlomiej Zolnierkiewicz } 8025bccae6eSSangbeom Kim 8035bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 8045bccae6eSSangbeom Kim 8055bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 8065bccae6eSSangbeom Kim 8075bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 8085bccae6eSSangbeom Kim 8095bccae6eSSangbeom Kim info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", 8105bccae6eSSangbeom Kim &s5m_rtc_ops, THIS_MODULE); 8115bccae6eSSangbeom Kim 812e349c910SKrzysztof Kozlowski if (IS_ERR(info->rtc_dev)) { 813e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->rtc_dev); 814e349c910SKrzysztof Kozlowski goto err; 815e349c910SKrzysztof Kozlowski } 8165bccae6eSSangbeom Kim 817b7d5b9a9SBartlomiej Zolnierkiewicz if (!info->irq) { 818b7d5b9a9SBartlomiej Zolnierkiewicz dev_info(&pdev->dev, "Alarm IRQ not available\n"); 819b7d5b9a9SBartlomiej Zolnierkiewicz return 0; 820b7d5b9a9SBartlomiej Zolnierkiewicz } 821b7d5b9a9SBartlomiej Zolnierkiewicz 8225bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 8235bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 8245bccae6eSSangbeom Kim info); 825e349c910SKrzysztof Kozlowski if (ret < 0) { 8265bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 8275bccae6eSSangbeom Kim info->irq, ret); 828e349c910SKrzysztof Kozlowski goto err; 829e349c910SKrzysztof Kozlowski } 830e349c910SKrzysztof Kozlowski 831e349c910SKrzysztof Kozlowski return 0; 832e349c910SKrzysztof Kozlowski 833e349c910SKrzysztof Kozlowski err: 834e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 8355bccae6eSSangbeom Kim 8365bccae6eSSangbeom Kim return ret; 8375bccae6eSSangbeom Kim } 8385bccae6eSSangbeom Kim 839e349c910SKrzysztof Kozlowski static int s5m_rtc_remove(struct platform_device *pdev) 840e349c910SKrzysztof Kozlowski { 841e349c910SKrzysztof Kozlowski struct s5m_rtc_info *info = platform_get_drvdata(pdev); 842e349c910SKrzysztof Kozlowski 843e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 844e349c910SKrzysztof Kozlowski 845e349c910SKrzysztof Kozlowski return 0; 846e349c910SKrzysztof Kozlowski } 847e349c910SKrzysztof Kozlowski 84811ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 849222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 850222ead7fSKrzysztof Kozlowski { 851222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 852222ead7fSKrzysztof Kozlowski int ret = 0; 853222ead7fSKrzysztof Kozlowski 854b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 855222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 856222ead7fSKrzysztof Kozlowski 857222ead7fSKrzysztof Kozlowski return ret; 858222ead7fSKrzysztof Kozlowski } 859222ead7fSKrzysztof Kozlowski 860222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(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 = enable_irq_wake(info->irq); 867222ead7fSKrzysztof Kozlowski 868222ead7fSKrzysztof Kozlowski return ret; 869222ead7fSKrzysztof Kozlowski } 87011ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 871222ead7fSKrzysztof Kozlowski 872222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 873222ead7fSKrzysztof Kozlowski 8745bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 8750c5deb1eSKrzysztof Kozlowski { "s5m-rtc", S5M8767X }, 8765281f94aSKrzysztof Kozlowski { "s2mps13-rtc", S2MPS13X }, 8770c5deb1eSKrzysztof Kozlowski { "s2mps14-rtc", S2MPS14X }, 878a65e5efaSAlim Akhtar { "s2mps15-rtc", S2MPS15X }, 87945cd15e6SAndrey Ryabinin { }, 8805bccae6eSSangbeom Kim }; 88163074cc3SJavier Martinez Canillas MODULE_DEVICE_TABLE(platform, s5m_rtc_id); 8825bccae6eSSangbeom Kim 8835bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 8845bccae6eSSangbeom Kim .driver = { 8855bccae6eSSangbeom Kim .name = "s5m-rtc", 886222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 8875bccae6eSSangbeom Kim }, 8885bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 889e349c910SKrzysztof Kozlowski .remove = s5m_rtc_remove, 8905bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 8915bccae6eSSangbeom Kim }; 8925bccae6eSSangbeom Kim 8935bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 8945bccae6eSSangbeom Kim 8955bccae6eSSangbeom Kim /* Module information */ 8965bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 8970c5deb1eSKrzysztof Kozlowski MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); 8985bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 8995bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 900