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 185bccae6eSSangbeom Kim #include <linux/module.h> 195bccae6eSSangbeom Kim #include <linux/i2c.h> 205bccae6eSSangbeom Kim #include <linux/bcd.h> 215bccae6eSSangbeom Kim #include <linux/regmap.h> 225bccae6eSSangbeom Kim #include <linux/rtc.h> 235bccae6eSSangbeom Kim #include <linux/platform_device.h> 245bccae6eSSangbeom Kim #include <linux/mfd/samsung/core.h> 255bccae6eSSangbeom Kim #include <linux/mfd/samsung/irq.h> 265bccae6eSSangbeom Kim #include <linux/mfd/samsung/rtc.h> 270c5deb1eSKrzysztof Kozlowski #include <linux/mfd/samsung/s2mps14.h> 285bccae6eSSangbeom Kim 29d73238d4SKrzysztof Kozlowski /* 30d73238d4SKrzysztof Kozlowski * Maximum number of retries for checking changes in UDR field 31602cb5bbSKrzysztof Kozlowski * of S5M_RTC_UDR_CON register (to limit possible endless loop). 32d73238d4SKrzysztof Kozlowski * 33d73238d4SKrzysztof Kozlowski * After writing to RTC registers (setting time or alarm) read the UDR field 34602cb5bbSKrzysztof Kozlowski * in S5M_RTC_UDR_CON register. UDR is auto-cleared when data have 35d73238d4SKrzysztof Kozlowski * been transferred. 36d73238d4SKrzysztof Kozlowski */ 37d73238d4SKrzysztof Kozlowski #define UDR_READ_RETRY_CNT 5 38d73238d4SKrzysztof Kozlowski 39f8b23bbdSKrzysztof Kozlowski /* Registers used by the driver which are different between chipsets. */ 40f8b23bbdSKrzysztof Kozlowski struct s5m_rtc_reg_config { 41f8b23bbdSKrzysztof Kozlowski /* Number of registers used for setting time/alarm0/alarm1 */ 42f8b23bbdSKrzysztof Kozlowski unsigned int regs_count; 43f8b23bbdSKrzysztof Kozlowski /* First register for time, seconds */ 44f8b23bbdSKrzysztof Kozlowski unsigned int time; 45f8b23bbdSKrzysztof Kozlowski /* RTC control register */ 46f8b23bbdSKrzysztof Kozlowski unsigned int ctrl; 47f8b23bbdSKrzysztof Kozlowski /* First register for alarm 0, seconds */ 48f8b23bbdSKrzysztof Kozlowski unsigned int alarm0; 49f8b23bbdSKrzysztof Kozlowski /* First register for alarm 1, seconds */ 50f8b23bbdSKrzysztof Kozlowski unsigned int alarm1; 51f8b23bbdSKrzysztof Kozlowski /* 52f8b23bbdSKrzysztof Kozlowski * Register for update flag (UDR). Typically setting UDR field to 1 53f8b23bbdSKrzysztof Kozlowski * will enable update of time or alarm register. Then it will be 54f8b23bbdSKrzysztof Kozlowski * auto-cleared after successful update. 55f8b23bbdSKrzysztof Kozlowski */ 56f8b23bbdSKrzysztof Kozlowski unsigned int rtc_udr_update; 57f8b23bbdSKrzysztof Kozlowski /* Mask for UDR field in 'rtc_udr_update' register */ 58f8b23bbdSKrzysztof Kozlowski unsigned int rtc_udr_mask; 59f8b23bbdSKrzysztof Kozlowski }; 60f8b23bbdSKrzysztof Kozlowski 61f8b23bbdSKrzysztof Kozlowski /* Register map for S5M8763 and S5M8767 */ 62f8b23bbdSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s5m_rtc_regs = { 63f8b23bbdSKrzysztof Kozlowski .regs_count = 8, 64f8b23bbdSKrzysztof Kozlowski .time = S5M_RTC_SEC, 65f8b23bbdSKrzysztof Kozlowski .ctrl = S5M_ALARM1_CONF, 66f8b23bbdSKrzysztof Kozlowski .alarm0 = S5M_ALARM0_SEC, 67f8b23bbdSKrzysztof Kozlowski .alarm1 = S5M_ALARM1_SEC, 68f8b23bbdSKrzysztof Kozlowski .rtc_udr_update = S5M_RTC_UDR_CON, 69f8b23bbdSKrzysztof Kozlowski .rtc_udr_mask = S5M_RTC_UDR_MASK, 70f8b23bbdSKrzysztof Kozlowski }; 71f8b23bbdSKrzysztof Kozlowski 720c5deb1eSKrzysztof Kozlowski /* 730c5deb1eSKrzysztof Kozlowski * Register map for S2MPS14. 740c5deb1eSKrzysztof Kozlowski * It may be also suitable for S2MPS11 but this was not tested. 750c5deb1eSKrzysztof Kozlowski */ 760c5deb1eSKrzysztof Kozlowski static const struct s5m_rtc_reg_config s2mps_rtc_regs = { 770c5deb1eSKrzysztof Kozlowski .regs_count = 7, 780c5deb1eSKrzysztof Kozlowski .time = S2MPS_RTC_SEC, 790c5deb1eSKrzysztof Kozlowski .ctrl = S2MPS_RTC_CTRL, 800c5deb1eSKrzysztof Kozlowski .alarm0 = S2MPS_ALARM0_SEC, 810c5deb1eSKrzysztof Kozlowski .alarm1 = S2MPS_ALARM1_SEC, 820c5deb1eSKrzysztof Kozlowski .rtc_udr_update = S2MPS_RTC_UDR_CON, 830c5deb1eSKrzysztof Kozlowski .rtc_udr_mask = S2MPS_RTC_WUDR_MASK, 840c5deb1eSKrzysztof Kozlowski }; 850c5deb1eSKrzysztof Kozlowski 865bccae6eSSangbeom Kim struct s5m_rtc_info { 875bccae6eSSangbeom Kim struct device *dev; 88e349c910SKrzysztof Kozlowski struct i2c_client *i2c; 895bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx; 905ccb7d71SGeert Uytterhoeven struct regmap *regmap; 915bccae6eSSangbeom Kim struct rtc_device *rtc_dev; 925bccae6eSSangbeom Kim int irq; 935bccae6eSSangbeom Kim int device_type; 945bccae6eSSangbeom Kim int rtc_24hr_mode; 95f8b23bbdSKrzysztof Kozlowski const struct s5m_rtc_reg_config *regs; 965bccae6eSSangbeom Kim }; 975bccae6eSSangbeom Kim 98e349c910SKrzysztof Kozlowski static const struct regmap_config s5m_rtc_regmap_config = { 99e349c910SKrzysztof Kozlowski .reg_bits = 8, 100e349c910SKrzysztof Kozlowski .val_bits = 8, 101e349c910SKrzysztof Kozlowski 102602cb5bbSKrzysztof Kozlowski .max_register = S5M_RTC_REG_MAX, 103e349c910SKrzysztof Kozlowski }; 104e349c910SKrzysztof Kozlowski 105e349c910SKrzysztof Kozlowski static const struct regmap_config s2mps14_rtc_regmap_config = { 106e349c910SKrzysztof Kozlowski .reg_bits = 8, 107e349c910SKrzysztof Kozlowski .val_bits = 8, 108e349c910SKrzysztof Kozlowski 109e349c910SKrzysztof Kozlowski .max_register = S2MPS_RTC_REG_MAX, 110e349c910SKrzysztof Kozlowski }; 111e349c910SKrzysztof Kozlowski 1125bccae6eSSangbeom Kim static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, 1135bccae6eSSangbeom Kim int rtc_24hr_mode) 1145bccae6eSSangbeom Kim { 1155bccae6eSSangbeom Kim tm->tm_sec = data[RTC_SEC] & 0x7f; 1165bccae6eSSangbeom Kim tm->tm_min = data[RTC_MIN] & 0x7f; 1175bccae6eSSangbeom Kim if (rtc_24hr_mode) { 1185bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x1f; 1195bccae6eSSangbeom Kim } else { 1205bccae6eSSangbeom Kim tm->tm_hour = data[RTC_HOUR] & 0x0f; 1215bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM_MASK) 1225bccae6eSSangbeom Kim tm->tm_hour += 12; 1235bccae6eSSangbeom Kim } 1245bccae6eSSangbeom Kim 1255bccae6eSSangbeom Kim tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); 1265bccae6eSSangbeom Kim tm->tm_mday = data[RTC_DATE] & 0x1f; 1275bccae6eSSangbeom Kim tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; 1285bccae6eSSangbeom Kim tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; 1295bccae6eSSangbeom Kim tm->tm_yday = 0; 1305bccae6eSSangbeom Kim tm->tm_isdst = 0; 1315bccae6eSSangbeom Kim } 1325bccae6eSSangbeom Kim 1335bccae6eSSangbeom Kim static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 1345bccae6eSSangbeom Kim { 1355bccae6eSSangbeom Kim data[RTC_SEC] = tm->tm_sec; 1365bccae6eSSangbeom Kim data[RTC_MIN] = tm->tm_min; 1375bccae6eSSangbeom Kim 1385bccae6eSSangbeom Kim if (tm->tm_hour >= 12) 1395bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; 1405bccae6eSSangbeom Kim else 1415bccae6eSSangbeom Kim data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; 1425bccae6eSSangbeom Kim 1435bccae6eSSangbeom Kim data[RTC_WEEKDAY] = 1 << tm->tm_wday; 1445bccae6eSSangbeom Kim data[RTC_DATE] = tm->tm_mday; 1455bccae6eSSangbeom Kim data[RTC_MONTH] = tm->tm_mon + 1; 1465bccae6eSSangbeom Kim data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; 1475bccae6eSSangbeom Kim 1485bccae6eSSangbeom Kim if (tm->tm_year < 100) { 1495bccae6eSSangbeom Kim pr_err("s5m8767 RTC cannot handle the year %d.\n", 1505bccae6eSSangbeom Kim 1900 + tm->tm_year); 1515bccae6eSSangbeom Kim return -EINVAL; 1525bccae6eSSangbeom Kim } else { 1535bccae6eSSangbeom Kim return 0; 1545bccae6eSSangbeom Kim } 1555bccae6eSSangbeom Kim } 1565bccae6eSSangbeom Kim 157d73238d4SKrzysztof Kozlowski /* 158d73238d4SKrzysztof Kozlowski * Read RTC_UDR_CON register and wait till UDR field is cleared. 159d73238d4SKrzysztof Kozlowski * This indicates that time/alarm update ended. 160d73238d4SKrzysztof Kozlowski */ 161d73238d4SKrzysztof Kozlowski static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) 162d73238d4SKrzysztof Kozlowski { 163d73238d4SKrzysztof Kozlowski int ret, retry = UDR_READ_RETRY_CNT; 164d73238d4SKrzysztof Kozlowski unsigned int data; 165d73238d4SKrzysztof Kozlowski 166d73238d4SKrzysztof Kozlowski do { 167f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, 168f8b23bbdSKrzysztof Kozlowski &data); 169f8b23bbdSKrzysztof Kozlowski } while (--retry && (data & info->regs->rtc_udr_mask) && !ret); 170d73238d4SKrzysztof Kozlowski 171d73238d4SKrzysztof Kozlowski if (!retry) 172d73238d4SKrzysztof Kozlowski dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); 173d73238d4SKrzysztof Kozlowski 174d73238d4SKrzysztof Kozlowski return ret; 175d73238d4SKrzysztof Kozlowski } 176d73238d4SKrzysztof Kozlowski 177f8b23bbdSKrzysztof Kozlowski static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, 178f8b23bbdSKrzysztof Kozlowski struct rtc_wkalrm *alarm) 179f8b23bbdSKrzysztof Kozlowski { 180f8b23bbdSKrzysztof Kozlowski int ret; 181f8b23bbdSKrzysztof Kozlowski unsigned int val; 182f8b23bbdSKrzysztof Kozlowski 183f8b23bbdSKrzysztof Kozlowski switch (info->device_type) { 184f8b23bbdSKrzysztof Kozlowski case S5M8767X: 185f8b23bbdSKrzysztof Kozlowski case S5M8763X: 186f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); 187f8b23bbdSKrzysztof Kozlowski val &= S5M_ALARM0_STATUS; 188f8b23bbdSKrzysztof Kozlowski break; 1890c5deb1eSKrzysztof Kozlowski case S2MPS14X: 190*5281f94aSKrzysztof Kozlowski case S2MPS13X: 1910c5deb1eSKrzysztof Kozlowski ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, 1920c5deb1eSKrzysztof Kozlowski &val); 1930c5deb1eSKrzysztof Kozlowski val &= S2MPS_ALARM0_STATUS; 1940c5deb1eSKrzysztof Kozlowski break; 195f8b23bbdSKrzysztof Kozlowski default: 196f8b23bbdSKrzysztof Kozlowski return -EINVAL; 197f8b23bbdSKrzysztof Kozlowski } 198f8b23bbdSKrzysztof Kozlowski if (ret < 0) 199f8b23bbdSKrzysztof Kozlowski return ret; 200f8b23bbdSKrzysztof Kozlowski 201f8b23bbdSKrzysztof Kozlowski if (val) 202f8b23bbdSKrzysztof Kozlowski alarm->pending = 1; 203f8b23bbdSKrzysztof Kozlowski else 204f8b23bbdSKrzysztof Kozlowski alarm->pending = 0; 205f8b23bbdSKrzysztof Kozlowski 206f8b23bbdSKrzysztof Kozlowski return 0; 207f8b23bbdSKrzysztof Kozlowski } 208f8b23bbdSKrzysztof Kozlowski 2095bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 2105bccae6eSSangbeom Kim { 2115bccae6eSSangbeom Kim int ret; 2125bccae6eSSangbeom Kim unsigned int data; 2135bccae6eSSangbeom Kim 214f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); 2155bccae6eSSangbeom Kim if (ret < 0) { 2165bccae6eSSangbeom Kim dev_err(info->dev, "failed to read update reg(%d)\n", ret); 2175bccae6eSSangbeom Kim return ret; 2185bccae6eSSangbeom Kim } 2195bccae6eSSangbeom Kim 220f8b23bbdSKrzysztof Kozlowski data |= info->regs->rtc_udr_mask; 2210c5deb1eSKrzysztof Kozlowski if (info->device_type == S5M8763X || info->device_type == S5M8767X) 2220c5deb1eSKrzysztof Kozlowski data |= S5M_RTC_TIME_EN_MASK; 2235bccae6eSSangbeom Kim 224f8b23bbdSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); 2255bccae6eSSangbeom Kim if (ret < 0) { 2265bccae6eSSangbeom Kim dev_err(info->dev, "failed to write update reg(%d)\n", ret); 2275bccae6eSSangbeom Kim return ret; 2285bccae6eSSangbeom Kim } 2295bccae6eSSangbeom Kim 230d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2315bccae6eSSangbeom Kim 2325bccae6eSSangbeom Kim return ret; 2335bccae6eSSangbeom Kim } 2345bccae6eSSangbeom Kim 2355bccae6eSSangbeom Kim static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 2365bccae6eSSangbeom Kim { 2375bccae6eSSangbeom Kim int ret; 2385bccae6eSSangbeom Kim unsigned int data; 2395bccae6eSSangbeom Kim 240f8b23bbdSKrzysztof Kozlowski ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); 2415bccae6eSSangbeom Kim if (ret < 0) { 2425bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to read update reg(%d)\n", 2435bccae6eSSangbeom Kim __func__, ret); 2445bccae6eSSangbeom Kim return ret; 2455bccae6eSSangbeom Kim } 2465bccae6eSSangbeom Kim 247f8b23bbdSKrzysztof Kozlowski data |= info->regs->rtc_udr_mask; 2480c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 2490c5deb1eSKrzysztof Kozlowski case S5M8763X: 2500c5deb1eSKrzysztof Kozlowski case S5M8767X: 2510c5deb1eSKrzysztof Kozlowski data &= ~S5M_RTC_TIME_EN_MASK; 2520c5deb1eSKrzysztof Kozlowski break; 2530c5deb1eSKrzysztof Kozlowski case S2MPS14X: 2540c5deb1eSKrzysztof Kozlowski data |= S2MPS_RTC_RUDR_MASK; 2550c5deb1eSKrzysztof Kozlowski break; 256*5281f94aSKrzysztof Kozlowski case S2MPS13X: 257*5281f94aSKrzysztof Kozlowski data |= S2MPS13_RTC_AUDR_MASK; 258*5281f94aSKrzysztof Kozlowski break; 2590c5deb1eSKrzysztof Kozlowski default: 2600c5deb1eSKrzysztof Kozlowski return -EINVAL; 2610c5deb1eSKrzysztof Kozlowski } 2625bccae6eSSangbeom Kim 263f8b23bbdSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); 2645bccae6eSSangbeom Kim if (ret < 0) { 2655bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write update reg(%d)\n", 2665bccae6eSSangbeom Kim __func__, ret); 2675bccae6eSSangbeom Kim return ret; 2685bccae6eSSangbeom Kim } 2695bccae6eSSangbeom Kim 270d73238d4SKrzysztof Kozlowski ret = s5m8767_wait_for_udr_update(info); 2715bccae6eSSangbeom Kim 272*5281f94aSKrzysztof Kozlowski /* On S2MPS13 the AUDR is not auto-cleared */ 273*5281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS13X) 274*5281f94aSKrzysztof Kozlowski regmap_update_bits(info->regmap, info->regs->rtc_udr_update, 275*5281f94aSKrzysztof Kozlowski S2MPS13_RTC_AUDR_MASK, 0); 276*5281f94aSKrzysztof Kozlowski 2775bccae6eSSangbeom Kim return ret; 2785bccae6eSSangbeom Kim } 2795bccae6eSSangbeom Kim 2805bccae6eSSangbeom Kim static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) 2815bccae6eSSangbeom Kim { 2825bccae6eSSangbeom Kim tm->tm_sec = bcd2bin(data[RTC_SEC]); 2835bccae6eSSangbeom Kim tm->tm_min = bcd2bin(data[RTC_MIN]); 2845bccae6eSSangbeom Kim 2855bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_12) { 2865bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); 2875bccae6eSSangbeom Kim if (data[RTC_HOUR] & HOUR_PM) 2885bccae6eSSangbeom Kim tm->tm_hour += 12; 2895bccae6eSSangbeom Kim } else { 2905bccae6eSSangbeom Kim tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); 2915bccae6eSSangbeom Kim } 2925bccae6eSSangbeom Kim 2935bccae6eSSangbeom Kim tm->tm_wday = data[RTC_WEEKDAY] & 0x07; 2945bccae6eSSangbeom Kim tm->tm_mday = bcd2bin(data[RTC_DATE]); 2955bccae6eSSangbeom Kim tm->tm_mon = bcd2bin(data[RTC_MONTH]); 2965bccae6eSSangbeom Kim tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; 2975bccae6eSSangbeom Kim tm->tm_year -= 1900; 2985bccae6eSSangbeom Kim } 2995bccae6eSSangbeom Kim 3005bccae6eSSangbeom Kim static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) 3015bccae6eSSangbeom Kim { 3025bccae6eSSangbeom Kim data[RTC_SEC] = bin2bcd(tm->tm_sec); 3035bccae6eSSangbeom Kim data[RTC_MIN] = bin2bcd(tm->tm_min); 3045bccae6eSSangbeom Kim data[RTC_HOUR] = bin2bcd(tm->tm_hour); 3055bccae6eSSangbeom Kim data[RTC_WEEKDAY] = tm->tm_wday; 3065bccae6eSSangbeom Kim data[RTC_DATE] = bin2bcd(tm->tm_mday); 3075bccae6eSSangbeom Kim data[RTC_MONTH] = bin2bcd(tm->tm_mon); 3085bccae6eSSangbeom Kim data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); 3095bccae6eSSangbeom Kim data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); 3105bccae6eSSangbeom Kim } 3115bccae6eSSangbeom Kim 3125bccae6eSSangbeom Kim static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 3135bccae6eSSangbeom Kim { 3145bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 315f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3165bccae6eSSangbeom Kim int ret; 3175bccae6eSSangbeom Kim 318*5281f94aSKrzysztof Kozlowski if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) { 3190c5deb1eSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, 3200c5deb1eSKrzysztof Kozlowski info->regs->rtc_udr_update, 3210c5deb1eSKrzysztof Kozlowski S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK); 3220c5deb1eSKrzysztof Kozlowski if (ret) { 3230c5deb1eSKrzysztof Kozlowski dev_err(dev, 3240c5deb1eSKrzysztof Kozlowski "Failed to prepare registers for time reading: %d\n", 3250c5deb1eSKrzysztof Kozlowski ret); 3260c5deb1eSKrzysztof Kozlowski return ret; 3270c5deb1eSKrzysztof Kozlowski } 3280c5deb1eSKrzysztof Kozlowski } 329f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->time, data, 330f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3315bccae6eSSangbeom Kim if (ret < 0) 3325bccae6eSSangbeom Kim return ret; 3335bccae6eSSangbeom Kim 3345bccae6eSSangbeom Kim switch (info->device_type) { 3355bccae6eSSangbeom Kim case S5M8763X: 3365bccae6eSSangbeom Kim s5m8763_data_to_tm(data, tm); 3375bccae6eSSangbeom Kim break; 3385bccae6eSSangbeom Kim 3395bccae6eSSangbeom Kim case S5M8767X: 3400c5deb1eSKrzysztof Kozlowski case S2MPS14X: 341*5281f94aSKrzysztof Kozlowski case S2MPS13X: 3425bccae6eSSangbeom Kim s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); 3435bccae6eSSangbeom Kim break; 3445bccae6eSSangbeom Kim 3455bccae6eSSangbeom Kim default: 3465bccae6eSSangbeom Kim return -EINVAL; 3475bccae6eSSangbeom Kim } 3485bccae6eSSangbeom Kim 3495bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3505bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 3515bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 3525bccae6eSSangbeom Kim 3535bccae6eSSangbeom Kim return rtc_valid_tm(tm); 3545bccae6eSSangbeom Kim } 3555bccae6eSSangbeom Kim 3565bccae6eSSangbeom Kim static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 3575bccae6eSSangbeom Kim { 3585bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 359f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3605bccae6eSSangbeom Kim int ret = 0; 3615bccae6eSSangbeom Kim 3625bccae6eSSangbeom Kim switch (info->device_type) { 3635bccae6eSSangbeom Kim case S5M8763X: 3645bccae6eSSangbeom Kim s5m8763_tm_to_data(tm, data); 3655bccae6eSSangbeom Kim break; 3665bccae6eSSangbeom Kim case S5M8767X: 3670c5deb1eSKrzysztof Kozlowski case S2MPS14X: 368*5281f94aSKrzysztof Kozlowski case S2MPS13X: 3695bccae6eSSangbeom Kim ret = s5m8767_tm_to_data(tm, data); 3705bccae6eSSangbeom Kim break; 3715bccae6eSSangbeom Kim default: 3725bccae6eSSangbeom Kim return -EINVAL; 3735bccae6eSSangbeom Kim } 3745bccae6eSSangbeom Kim 3755bccae6eSSangbeom Kim if (ret < 0) 3765bccae6eSSangbeom Kim return ret; 3775bccae6eSSangbeom Kim 3785bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 3795bccae6eSSangbeom Kim 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, 3805bccae6eSSangbeom Kim tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); 3815bccae6eSSangbeom Kim 382f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->time, data, 383f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 3845bccae6eSSangbeom Kim if (ret < 0) 3855bccae6eSSangbeom Kim return ret; 3865bccae6eSSangbeom Kim 3875bccae6eSSangbeom Kim ret = s5m8767_rtc_set_time_reg(info); 3885bccae6eSSangbeom Kim 3895bccae6eSSangbeom Kim return ret; 3905bccae6eSSangbeom Kim } 3915bccae6eSSangbeom Kim 3925bccae6eSSangbeom Kim static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 3935bccae6eSSangbeom Kim { 3945bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 395f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 3965bccae6eSSangbeom Kim unsigned int val; 3975bccae6eSSangbeom Kim int ret, i; 3985bccae6eSSangbeom Kim 399f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 400f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4015bccae6eSSangbeom Kim if (ret < 0) 4025bccae6eSSangbeom Kim return ret; 4035bccae6eSSangbeom Kim 4045bccae6eSSangbeom Kim switch (info->device_type) { 4055bccae6eSSangbeom Kim case S5M8763X: 4065bccae6eSSangbeom Kim s5m8763_data_to_tm(data, &alrm->time); 407602cb5bbSKrzysztof Kozlowski ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); 4085bccae6eSSangbeom Kim if (ret < 0) 4095bccae6eSSangbeom Kim return ret; 4105bccae6eSSangbeom Kim 4115bccae6eSSangbeom Kim alrm->enabled = !!val; 4125bccae6eSSangbeom Kim break; 4135bccae6eSSangbeom Kim 4145bccae6eSSangbeom Kim case S5M8767X: 4150c5deb1eSKrzysztof Kozlowski case S2MPS14X: 416*5281f94aSKrzysztof Kozlowski case S2MPS13X: 4175bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); 4185bccae6eSSangbeom Kim alrm->enabled = 0; 419f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) { 4205bccae6eSSangbeom Kim if (data[i] & ALARM_ENABLE_MASK) { 4215bccae6eSSangbeom Kim alrm->enabled = 1; 4225bccae6eSSangbeom Kim break; 4235bccae6eSSangbeom Kim } 4245bccae6eSSangbeom Kim } 4255bccae6eSSangbeom Kim break; 4265bccae6eSSangbeom Kim 4275bccae6eSSangbeom Kim default: 4285bccae6eSSangbeom Kim return -EINVAL; 4295bccae6eSSangbeom Kim } 4305bccae6eSSangbeom Kim 431f8b23bbdSKrzysztof Kozlowski dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 432f8b23bbdSKrzysztof Kozlowski 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 433f8b23bbdSKrzysztof Kozlowski alrm->time.tm_mday, alrm->time.tm_hour, 434f8b23bbdSKrzysztof Kozlowski alrm->time.tm_min, alrm->time.tm_sec, 435f8b23bbdSKrzysztof Kozlowski alrm->time.tm_wday); 436f8b23bbdSKrzysztof Kozlowski 437f8b23bbdSKrzysztof Kozlowski ret = s5m_check_peding_alarm_interrupt(info, alrm); 4385bccae6eSSangbeom Kim 4395bccae6eSSangbeom Kim return 0; 4405bccae6eSSangbeom Kim } 4415bccae6eSSangbeom Kim 4425bccae6eSSangbeom Kim static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 4435bccae6eSSangbeom Kim { 444f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4455bccae6eSSangbeom Kim int ret, i; 4465bccae6eSSangbeom Kim struct rtc_time tm; 4475bccae6eSSangbeom Kim 448f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 449f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4505bccae6eSSangbeom Kim if (ret < 0) 4515bccae6eSSangbeom Kim return ret; 4525bccae6eSSangbeom Kim 4535bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 4545bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4555bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 4565bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 4575bccae6eSSangbeom Kim 4585bccae6eSSangbeom Kim switch (info->device_type) { 4595bccae6eSSangbeom Kim case S5M8763X: 460602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); 4615bccae6eSSangbeom Kim break; 4625bccae6eSSangbeom Kim 4635bccae6eSSangbeom Kim case S5M8767X: 4640c5deb1eSKrzysztof Kozlowski case S2MPS14X: 465*5281f94aSKrzysztof Kozlowski case S2MPS13X: 466f8b23bbdSKrzysztof Kozlowski for (i = 0; i < info->regs->regs_count; i++) 4675bccae6eSSangbeom Kim data[i] &= ~ALARM_ENABLE_MASK; 4685bccae6eSSangbeom Kim 469f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 470f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4715bccae6eSSangbeom Kim if (ret < 0) 4725bccae6eSSangbeom Kim return ret; 4735bccae6eSSangbeom Kim 4745bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 4755bccae6eSSangbeom Kim 4765bccae6eSSangbeom Kim break; 4775bccae6eSSangbeom Kim 4785bccae6eSSangbeom Kim default: 4795bccae6eSSangbeom Kim return -EINVAL; 4805bccae6eSSangbeom Kim } 4815bccae6eSSangbeom Kim 4825bccae6eSSangbeom Kim return ret; 4835bccae6eSSangbeom Kim } 4845bccae6eSSangbeom Kim 4855bccae6eSSangbeom Kim static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 4865bccae6eSSangbeom Kim { 4875bccae6eSSangbeom Kim int ret; 488f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 4895bccae6eSSangbeom Kim u8 alarm0_conf; 4905bccae6eSSangbeom Kim struct rtc_time tm; 4915bccae6eSSangbeom Kim 492f8b23bbdSKrzysztof Kozlowski ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, 493f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 4945bccae6eSSangbeom Kim if (ret < 0) 4955bccae6eSSangbeom Kim return ret; 4965bccae6eSSangbeom Kim 4975bccae6eSSangbeom Kim s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); 4985bccae6eSSangbeom Kim dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 4995bccae6eSSangbeom Kim 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, 5005bccae6eSSangbeom Kim tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); 5015bccae6eSSangbeom Kim 5025bccae6eSSangbeom Kim switch (info->device_type) { 5035bccae6eSSangbeom Kim case S5M8763X: 5045bccae6eSSangbeom Kim alarm0_conf = 0x77; 505602cb5bbSKrzysztof Kozlowski ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); 5065bccae6eSSangbeom Kim break; 5075bccae6eSSangbeom Kim 5085bccae6eSSangbeom Kim case S5M8767X: 5090c5deb1eSKrzysztof Kozlowski case S2MPS14X: 510*5281f94aSKrzysztof Kozlowski case S2MPS13X: 5115bccae6eSSangbeom Kim data[RTC_SEC] |= ALARM_ENABLE_MASK; 5125bccae6eSSangbeom Kim data[RTC_MIN] |= ALARM_ENABLE_MASK; 5135bccae6eSSangbeom Kim data[RTC_HOUR] |= ALARM_ENABLE_MASK; 5145bccae6eSSangbeom Kim data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; 5155bccae6eSSangbeom Kim if (data[RTC_DATE] & 0x1f) 5165bccae6eSSangbeom Kim data[RTC_DATE] |= ALARM_ENABLE_MASK; 5175bccae6eSSangbeom Kim if (data[RTC_MONTH] & 0xf) 5185bccae6eSSangbeom Kim data[RTC_MONTH] |= ALARM_ENABLE_MASK; 5195bccae6eSSangbeom Kim if (data[RTC_YEAR1] & 0x7f) 5205bccae6eSSangbeom Kim data[RTC_YEAR1] |= ALARM_ENABLE_MASK; 5215bccae6eSSangbeom Kim 522f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 523f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5245bccae6eSSangbeom Kim if (ret < 0) 5255bccae6eSSangbeom Kim return ret; 5265bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5275bccae6eSSangbeom Kim 5285bccae6eSSangbeom Kim break; 5295bccae6eSSangbeom Kim 5305bccae6eSSangbeom Kim default: 5315bccae6eSSangbeom Kim return -EINVAL; 5325bccae6eSSangbeom Kim } 5335bccae6eSSangbeom Kim 5345bccae6eSSangbeom Kim return ret; 5355bccae6eSSangbeom Kim } 5365bccae6eSSangbeom Kim 5375bccae6eSSangbeom Kim static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 5385bccae6eSSangbeom Kim { 5395bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 540f8b23bbdSKrzysztof Kozlowski u8 data[info->regs->regs_count]; 5415bccae6eSSangbeom Kim int ret; 5425bccae6eSSangbeom Kim 5435bccae6eSSangbeom Kim switch (info->device_type) { 5445bccae6eSSangbeom Kim case S5M8763X: 5455bccae6eSSangbeom Kim s5m8763_tm_to_data(&alrm->time, data); 5465bccae6eSSangbeom Kim break; 5475bccae6eSSangbeom Kim 5485bccae6eSSangbeom Kim case S5M8767X: 5490c5deb1eSKrzysztof Kozlowski case S2MPS14X: 550*5281f94aSKrzysztof Kozlowski case S2MPS13X: 5515bccae6eSSangbeom Kim s5m8767_tm_to_data(&alrm->time, data); 5525bccae6eSSangbeom Kim break; 5535bccae6eSSangbeom Kim 5545bccae6eSSangbeom Kim default: 5555bccae6eSSangbeom Kim return -EINVAL; 5565bccae6eSSangbeom Kim } 5575bccae6eSSangbeom Kim 5585bccae6eSSangbeom Kim dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, 5595bccae6eSSangbeom Kim 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, 5605bccae6eSSangbeom Kim alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, 5615bccae6eSSangbeom Kim alrm->time.tm_sec, alrm->time.tm_wday); 5625bccae6eSSangbeom Kim 5635bccae6eSSangbeom Kim ret = s5m_rtc_stop_alarm(info); 5645bccae6eSSangbeom Kim if (ret < 0) 5655bccae6eSSangbeom Kim return ret; 5665bccae6eSSangbeom Kim 567f8b23bbdSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, 568f8b23bbdSKrzysztof Kozlowski info->regs->regs_count); 5695bccae6eSSangbeom Kim if (ret < 0) 5705bccae6eSSangbeom Kim return ret; 5715bccae6eSSangbeom Kim 5725bccae6eSSangbeom Kim ret = s5m8767_rtc_set_alarm_reg(info); 5735bccae6eSSangbeom Kim if (ret < 0) 5745bccae6eSSangbeom Kim return ret; 5755bccae6eSSangbeom Kim 5765bccae6eSSangbeom Kim if (alrm->enabled) 5775bccae6eSSangbeom Kim ret = s5m_rtc_start_alarm(info); 5785bccae6eSSangbeom Kim 5795bccae6eSSangbeom Kim return ret; 5805bccae6eSSangbeom Kim } 5815bccae6eSSangbeom Kim 5825bccae6eSSangbeom Kim static int s5m_rtc_alarm_irq_enable(struct device *dev, 5835bccae6eSSangbeom Kim unsigned int enabled) 5845bccae6eSSangbeom Kim { 5855bccae6eSSangbeom Kim struct s5m_rtc_info *info = dev_get_drvdata(dev); 5865bccae6eSSangbeom Kim 5875bccae6eSSangbeom Kim if (enabled) 5885bccae6eSSangbeom Kim return s5m_rtc_start_alarm(info); 5895bccae6eSSangbeom Kim else 5905bccae6eSSangbeom Kim return s5m_rtc_stop_alarm(info); 5915bccae6eSSangbeom Kim } 5925bccae6eSSangbeom Kim 5935bccae6eSSangbeom Kim static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) 5945bccae6eSSangbeom Kim { 5955bccae6eSSangbeom Kim struct s5m_rtc_info *info = data; 5965bccae6eSSangbeom Kim 5975bccae6eSSangbeom Kim rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); 5985bccae6eSSangbeom Kim 5995bccae6eSSangbeom Kim return IRQ_HANDLED; 6005bccae6eSSangbeom Kim } 6015bccae6eSSangbeom Kim 6025bccae6eSSangbeom Kim static const struct rtc_class_ops s5m_rtc_ops = { 6035bccae6eSSangbeom Kim .read_time = s5m_rtc_read_time, 6045bccae6eSSangbeom Kim .set_time = s5m_rtc_set_time, 6055bccae6eSSangbeom Kim .read_alarm = s5m_rtc_read_alarm, 6065bccae6eSSangbeom Kim .set_alarm = s5m_rtc_set_alarm, 6075bccae6eSSangbeom Kim .alarm_irq_enable = s5m_rtc_alarm_irq_enable, 6085bccae6eSSangbeom Kim }; 6095bccae6eSSangbeom Kim 6105bccae6eSSangbeom Kim static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 6115bccae6eSSangbeom Kim { 6125bccae6eSSangbeom Kim u8 data[2]; 6135bccae6eSSangbeom Kim int ret; 6145bccae6eSSangbeom Kim 6150c5deb1eSKrzysztof Kozlowski switch (info->device_type) { 6160c5deb1eSKrzysztof Kozlowski case S5M8763X: 6170c5deb1eSKrzysztof Kozlowski case S5M8767X: 6180c5f5d9aSKrzysztof Kozlowski /* UDR update time. Default of 7.32 ms is too long. */ 6190c5f5d9aSKrzysztof Kozlowski ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, 6200c5f5d9aSKrzysztof Kozlowski S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); 6210c5f5d9aSKrzysztof Kozlowski if (ret < 0) 6220c5f5d9aSKrzysztof Kozlowski dev_err(info->dev, "%s: fail to change UDR time: %d\n", 6230c5f5d9aSKrzysztof Kozlowski __func__, ret); 6240c5f5d9aSKrzysztof Kozlowski 6255bccae6eSSangbeom Kim /* Set RTC control register : Binary mode, 24hour mode */ 6265bccae6eSSangbeom Kim data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6275bccae6eSSangbeom Kim data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6285bccae6eSSangbeom Kim 629602cb5bbSKrzysztof Kozlowski ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); 6300c5deb1eSKrzysztof Kozlowski break; 6310c5deb1eSKrzysztof Kozlowski 6320c5deb1eSKrzysztof Kozlowski case S2MPS14X: 633*5281f94aSKrzysztof Kozlowski case S2MPS13X: 6340c5deb1eSKrzysztof Kozlowski data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); 6350c5deb1eSKrzysztof Kozlowski ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); 6360c5deb1eSKrzysztof Kozlowski break; 6370c5deb1eSKrzysztof Kozlowski 6380c5deb1eSKrzysztof Kozlowski default: 6390c5deb1eSKrzysztof Kozlowski return -EINVAL; 6400c5deb1eSKrzysztof Kozlowski } 6410c5deb1eSKrzysztof Kozlowski 6420c5deb1eSKrzysztof Kozlowski info->rtc_24hr_mode = 1; 6435bccae6eSSangbeom Kim if (ret < 0) { 6445bccae6eSSangbeom Kim dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", 6455bccae6eSSangbeom Kim __func__, ret); 6465bccae6eSSangbeom Kim return ret; 6475bccae6eSSangbeom Kim } 6485bccae6eSSangbeom Kim 6495bccae6eSSangbeom Kim return ret; 6505bccae6eSSangbeom Kim } 6515bccae6eSSangbeom Kim 6525bccae6eSSangbeom Kim static int s5m_rtc_probe(struct platform_device *pdev) 6535bccae6eSSangbeom Kim { 6545bccae6eSSangbeom Kim struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); 6555bccae6eSSangbeom Kim struct sec_platform_data *pdata = s5m87xx->pdata; 6565bccae6eSSangbeom Kim struct s5m_rtc_info *info; 657e349c910SKrzysztof Kozlowski const struct regmap_config *regmap_cfg; 658a0347f20SKrzysztof Kozlowski int ret, alarm_irq; 6595bccae6eSSangbeom Kim 6605bccae6eSSangbeom Kim if (!pdata) { 6615bccae6eSSangbeom Kim dev_err(pdev->dev.parent, "Platform data not supplied\n"); 6625bccae6eSSangbeom Kim return -ENODEV; 6635bccae6eSSangbeom Kim } 6645bccae6eSSangbeom Kim 6655bccae6eSSangbeom Kim info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 6665bccae6eSSangbeom Kim if (!info) 6675bccae6eSSangbeom Kim return -ENOMEM; 6685bccae6eSSangbeom Kim 669e349c910SKrzysztof Kozlowski switch (pdata->device_type) { 670e349c910SKrzysztof Kozlowski case S2MPS14X: 671*5281f94aSKrzysztof Kozlowski case S2MPS13X: 672e349c910SKrzysztof Kozlowski regmap_cfg = &s2mps14_rtc_regmap_config; 6730c5deb1eSKrzysztof Kozlowski info->regs = &s2mps_rtc_regs; 674a0347f20SKrzysztof Kozlowski alarm_irq = S2MPS14_IRQ_RTCA0; 675e349c910SKrzysztof Kozlowski break; 676e349c910SKrzysztof Kozlowski case S5M8763X: 677e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 678f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 679a0347f20SKrzysztof Kozlowski alarm_irq = S5M8763_IRQ_ALARM0; 680e349c910SKrzysztof Kozlowski break; 681e349c910SKrzysztof Kozlowski case S5M8767X: 682e349c910SKrzysztof Kozlowski regmap_cfg = &s5m_rtc_regmap_config; 683f8b23bbdSKrzysztof Kozlowski info->regs = &s5m_rtc_regs; 684a0347f20SKrzysztof Kozlowski alarm_irq = S5M8767_IRQ_RTCA1; 685e349c910SKrzysztof Kozlowski break; 686e349c910SKrzysztof Kozlowski default: 687e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Device type is not supported by RTC driver\n"); 688e349c910SKrzysztof Kozlowski return -ENODEV; 689e349c910SKrzysztof Kozlowski } 690e349c910SKrzysztof Kozlowski 691e349c910SKrzysztof Kozlowski info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); 692e349c910SKrzysztof Kozlowski if (!info->i2c) { 693e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); 694e349c910SKrzysztof Kozlowski return -ENODEV; 695e349c910SKrzysztof Kozlowski } 696e349c910SKrzysztof Kozlowski 697e349c910SKrzysztof Kozlowski info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); 698e349c910SKrzysztof Kozlowski if (IS_ERR(info->regmap)) { 699e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->regmap); 700e349c910SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", 701e349c910SKrzysztof Kozlowski ret); 702e349c910SKrzysztof Kozlowski goto err; 703e349c910SKrzysztof Kozlowski } 704e349c910SKrzysztof Kozlowski 7055bccae6eSSangbeom Kim info->dev = &pdev->dev; 7065bccae6eSSangbeom Kim info->s5m87xx = s5m87xx; 7075bccae6eSSangbeom Kim info->device_type = s5m87xx->device_type; 7085bccae6eSSangbeom Kim 709b7d5b9a9SBartlomiej Zolnierkiewicz if (s5m87xx->irq_data) { 710a0347f20SKrzysztof Kozlowski info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); 711a0347f20SKrzysztof Kozlowski if (info->irq <= 0) { 7125bccae6eSSangbeom Kim ret = -EINVAL; 713a0347f20SKrzysztof Kozlowski dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", 714a0347f20SKrzysztof Kozlowski alarm_irq); 715e349c910SKrzysztof Kozlowski goto err; 7165bccae6eSSangbeom Kim } 717b7d5b9a9SBartlomiej Zolnierkiewicz } 7185bccae6eSSangbeom Kim 7195bccae6eSSangbeom Kim platform_set_drvdata(pdev, info); 7205bccae6eSSangbeom Kim 7215bccae6eSSangbeom Kim ret = s5m8767_rtc_init_reg(info); 7225bccae6eSSangbeom Kim 7235bccae6eSSangbeom Kim device_init_wakeup(&pdev->dev, 1); 7245bccae6eSSangbeom Kim 7255bccae6eSSangbeom Kim info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", 7265bccae6eSSangbeom Kim &s5m_rtc_ops, THIS_MODULE); 7275bccae6eSSangbeom Kim 728e349c910SKrzysztof Kozlowski if (IS_ERR(info->rtc_dev)) { 729e349c910SKrzysztof Kozlowski ret = PTR_ERR(info->rtc_dev); 730e349c910SKrzysztof Kozlowski goto err; 731e349c910SKrzysztof Kozlowski } 7325bccae6eSSangbeom Kim 733b7d5b9a9SBartlomiej Zolnierkiewicz if (!info->irq) { 734b7d5b9a9SBartlomiej Zolnierkiewicz dev_info(&pdev->dev, "Alarm IRQ not available\n"); 735b7d5b9a9SBartlomiej Zolnierkiewicz return 0; 736b7d5b9a9SBartlomiej Zolnierkiewicz } 737b7d5b9a9SBartlomiej Zolnierkiewicz 7385bccae6eSSangbeom Kim ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, 7395bccae6eSSangbeom Kim s5m_rtc_alarm_irq, 0, "rtc-alarm0", 7405bccae6eSSangbeom Kim info); 741e349c910SKrzysztof Kozlowski if (ret < 0) { 7425bccae6eSSangbeom Kim dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", 7435bccae6eSSangbeom Kim info->irq, ret); 744e349c910SKrzysztof Kozlowski goto err; 745e349c910SKrzysztof Kozlowski } 746e349c910SKrzysztof Kozlowski 747e349c910SKrzysztof Kozlowski return 0; 748e349c910SKrzysztof Kozlowski 749e349c910SKrzysztof Kozlowski err: 750e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 7515bccae6eSSangbeom Kim 7525bccae6eSSangbeom Kim return ret; 7535bccae6eSSangbeom Kim } 7545bccae6eSSangbeom Kim 755e349c910SKrzysztof Kozlowski static int s5m_rtc_remove(struct platform_device *pdev) 756e349c910SKrzysztof Kozlowski { 757e349c910SKrzysztof Kozlowski struct s5m_rtc_info *info = platform_get_drvdata(pdev); 758e349c910SKrzysztof Kozlowski 759e349c910SKrzysztof Kozlowski i2c_unregister_device(info->i2c); 760e349c910SKrzysztof Kozlowski 761e349c910SKrzysztof Kozlowski return 0; 762e349c910SKrzysztof Kozlowski } 763e349c910SKrzysztof Kozlowski 76411ba5a1eSGeert Uytterhoeven #ifdef CONFIG_PM_SLEEP 765222ead7fSKrzysztof Kozlowski static int s5m_rtc_resume(struct device *dev) 766222ead7fSKrzysztof Kozlowski { 767222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 768222ead7fSKrzysztof Kozlowski int ret = 0; 769222ead7fSKrzysztof Kozlowski 770b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 771222ead7fSKrzysztof Kozlowski ret = disable_irq_wake(info->irq); 772222ead7fSKrzysztof Kozlowski 773222ead7fSKrzysztof Kozlowski return ret; 774222ead7fSKrzysztof Kozlowski } 775222ead7fSKrzysztof Kozlowski 776222ead7fSKrzysztof Kozlowski static int s5m_rtc_suspend(struct device *dev) 777222ead7fSKrzysztof Kozlowski { 778222ead7fSKrzysztof Kozlowski struct s5m_rtc_info *info = dev_get_drvdata(dev); 779222ead7fSKrzysztof Kozlowski int ret = 0; 780222ead7fSKrzysztof Kozlowski 781b7d5b9a9SBartlomiej Zolnierkiewicz if (info->irq && device_may_wakeup(dev)) 782222ead7fSKrzysztof Kozlowski ret = enable_irq_wake(info->irq); 783222ead7fSKrzysztof Kozlowski 784222ead7fSKrzysztof Kozlowski return ret; 785222ead7fSKrzysztof Kozlowski } 78611ba5a1eSGeert Uytterhoeven #endif /* CONFIG_PM_SLEEP */ 787222ead7fSKrzysztof Kozlowski 788222ead7fSKrzysztof Kozlowski static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); 789222ead7fSKrzysztof Kozlowski 7905bccae6eSSangbeom Kim static const struct platform_device_id s5m_rtc_id[] = { 7910c5deb1eSKrzysztof Kozlowski { "s5m-rtc", S5M8767X }, 792*5281f94aSKrzysztof Kozlowski { "s2mps13-rtc", S2MPS13X }, 7930c5deb1eSKrzysztof Kozlowski { "s2mps14-rtc", S2MPS14X }, 79445cd15e6SAndrey Ryabinin { }, 7955bccae6eSSangbeom Kim }; 7965bccae6eSSangbeom Kim 7975bccae6eSSangbeom Kim static struct platform_driver s5m_rtc_driver = { 7985bccae6eSSangbeom Kim .driver = { 7995bccae6eSSangbeom Kim .name = "s5m-rtc", 800222ead7fSKrzysztof Kozlowski .pm = &s5m_rtc_pm_ops, 8015bccae6eSSangbeom Kim }, 8025bccae6eSSangbeom Kim .probe = s5m_rtc_probe, 803e349c910SKrzysztof Kozlowski .remove = s5m_rtc_remove, 8045bccae6eSSangbeom Kim .id_table = s5m_rtc_id, 8055bccae6eSSangbeom Kim }; 8065bccae6eSSangbeom Kim 8075bccae6eSSangbeom Kim module_platform_driver(s5m_rtc_driver); 8085bccae6eSSangbeom Kim 8095bccae6eSSangbeom Kim /* Module information */ 8105bccae6eSSangbeom Kim MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 8110c5deb1eSKrzysztof Kozlowski MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); 8125bccae6eSSangbeom Kim MODULE_LICENSE("GPL"); 8135bccae6eSSangbeom Kim MODULE_ALIAS("platform:s5m-rtc"); 814