Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 1 | /* |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 2 | * RTC driver for Maxim MAX77686 and MAX77802 |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2012 Samsung Electronics Co.Ltd |
| 5 | * |
| 6 | * based on rtc-max8997.c |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/rtc.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/mutex.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/mfd/max77686-private.h> |
| 22 | #include <linux/irqdomain.h> |
| 23 | #include <linux/regmap.h> |
| 24 | |
| 25 | /* RTC Control Register */ |
| 26 | #define BCD_EN_SHIFT 0 |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 27 | #define BCD_EN_MASK BIT(BCD_EN_SHIFT) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 28 | #define MODEL24_SHIFT 1 |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 29 | #define MODEL24_MASK BIT(MODEL24_SHIFT) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 30 | /* RTC Update Register1 */ |
| 31 | #define RTC_UDR_SHIFT 0 |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 32 | #define RTC_UDR_MASK BIT(RTC_UDR_SHIFT) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 33 | #define RTC_RBUDR_SHIFT 4 |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 34 | #define RTC_RBUDR_MASK BIT(RTC_RBUDR_SHIFT) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 35 | /* RTC Hour register */ |
| 36 | #define HOUR_PM_SHIFT 6 |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 37 | #define HOUR_PM_MASK BIT(HOUR_PM_SHIFT) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 38 | /* RTC Alarm Enable */ |
| 39 | #define ALARM_ENABLE_SHIFT 7 |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 40 | #define ALARM_ENABLE_MASK BIT(ALARM_ENABLE_SHIFT) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 41 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 42 | #define REG_RTC_NONE 0xdeadbeef |
| 43 | |
| 44 | /* |
| 45 | * MAX77802 has separate register (RTCAE1) for alarm enable instead |
| 46 | * using 1 bit from registers RTC{SEC,MIN,HOUR,DAY,MONTH,YEAR,DATE} |
| 47 | * as in done in MAX77686. |
| 48 | */ |
| 49 | #define MAX77802_ALARM_ENABLE_VALUE 0x77 |
| 50 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 51 | enum { |
| 52 | RTC_SEC = 0, |
| 53 | RTC_MIN, |
| 54 | RTC_HOUR, |
| 55 | RTC_WEEKDAY, |
| 56 | RTC_MONTH, |
| 57 | RTC_YEAR, |
| 58 | RTC_DATE, |
| 59 | RTC_NR_TIME |
| 60 | }; |
| 61 | |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 62 | struct max77686_rtc_driver_data { |
| 63 | /* Minimum usecs needed for a RTC update */ |
| 64 | unsigned long delay; |
| 65 | /* Mask used to read RTC registers value */ |
| 66 | u8 mask; |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 67 | /* Registers offset to I2C addresses map */ |
| 68 | const unsigned int *map; |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 69 | /* Has a separate alarm enable register? */ |
| 70 | bool alarm_enable_reg; |
| 71 | /* Has a separate I2C regmap for the RTC? */ |
| 72 | bool separate_i2c_addr; |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 73 | }; |
| 74 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 75 | struct max77686_rtc_info { |
| 76 | struct device *dev; |
| 77 | struct max77686_dev *max77686; |
| 78 | struct i2c_client *rtc; |
| 79 | struct rtc_device *rtc_dev; |
| 80 | struct mutex lock; |
| 81 | |
| 82 | struct regmap *regmap; |
| 83 | |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 84 | const struct max77686_rtc_driver_data *drv_data; |
| 85 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 86 | int virq; |
| 87 | int rtc_24hr_mode; |
| 88 | }; |
| 89 | |
| 90 | enum MAX77686_RTC_OP { |
| 91 | MAX77686_RTC_WRITE, |
| 92 | MAX77686_RTC_READ, |
| 93 | }; |
| 94 | |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 95 | /* These are not registers but just offsets that are mapped to addresses */ |
| 96 | enum max77686_rtc_reg_offset { |
| 97 | REG_RTC_CONTROLM = 0, |
| 98 | REG_RTC_CONTROL, |
| 99 | REG_RTC_UPDATE0, |
| 100 | REG_WTSR_SMPL_CNTL, |
| 101 | REG_RTC_SEC, |
| 102 | REG_RTC_MIN, |
| 103 | REG_RTC_HOUR, |
| 104 | REG_RTC_WEEKDAY, |
| 105 | REG_RTC_MONTH, |
| 106 | REG_RTC_YEAR, |
| 107 | REG_RTC_DATE, |
| 108 | REG_ALARM1_SEC, |
| 109 | REG_ALARM1_MIN, |
| 110 | REG_ALARM1_HOUR, |
| 111 | REG_ALARM1_WEEKDAY, |
| 112 | REG_ALARM1_MONTH, |
| 113 | REG_ALARM1_YEAR, |
| 114 | REG_ALARM1_DATE, |
| 115 | REG_ALARM2_SEC, |
| 116 | REG_ALARM2_MIN, |
| 117 | REG_ALARM2_HOUR, |
| 118 | REG_ALARM2_WEEKDAY, |
| 119 | REG_ALARM2_MONTH, |
| 120 | REG_ALARM2_YEAR, |
| 121 | REG_ALARM2_DATE, |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 122 | REG_RTC_AE1, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 123 | REG_RTC_END, |
| 124 | }; |
| 125 | |
| 126 | /* Maps RTC registers offset to the MAX77686 register addresses */ |
| 127 | static const unsigned int max77686_map[REG_RTC_END] = { |
| 128 | [REG_RTC_CONTROLM] = MAX77686_RTC_CONTROLM, |
| 129 | [REG_RTC_CONTROL] = MAX77686_RTC_CONTROL, |
| 130 | [REG_RTC_UPDATE0] = MAX77686_RTC_UPDATE0, |
| 131 | [REG_WTSR_SMPL_CNTL] = MAX77686_WTSR_SMPL_CNTL, |
| 132 | [REG_RTC_SEC] = MAX77686_RTC_SEC, |
| 133 | [REG_RTC_MIN] = MAX77686_RTC_MIN, |
| 134 | [REG_RTC_HOUR] = MAX77686_RTC_HOUR, |
| 135 | [REG_RTC_WEEKDAY] = MAX77686_RTC_WEEKDAY, |
| 136 | [REG_RTC_MONTH] = MAX77686_RTC_MONTH, |
| 137 | [REG_RTC_YEAR] = MAX77686_RTC_YEAR, |
| 138 | [REG_RTC_DATE] = MAX77686_RTC_DATE, |
| 139 | [REG_ALARM1_SEC] = MAX77686_ALARM1_SEC, |
| 140 | [REG_ALARM1_MIN] = MAX77686_ALARM1_MIN, |
| 141 | [REG_ALARM1_HOUR] = MAX77686_ALARM1_HOUR, |
| 142 | [REG_ALARM1_WEEKDAY] = MAX77686_ALARM1_WEEKDAY, |
| 143 | [REG_ALARM1_MONTH] = MAX77686_ALARM1_MONTH, |
| 144 | [REG_ALARM1_YEAR] = MAX77686_ALARM1_YEAR, |
| 145 | [REG_ALARM1_DATE] = MAX77686_ALARM1_DATE, |
| 146 | [REG_ALARM2_SEC] = MAX77686_ALARM2_SEC, |
| 147 | [REG_ALARM2_MIN] = MAX77686_ALARM2_MIN, |
| 148 | [REG_ALARM2_HOUR] = MAX77686_ALARM2_HOUR, |
| 149 | [REG_ALARM2_WEEKDAY] = MAX77686_ALARM2_WEEKDAY, |
| 150 | [REG_ALARM2_MONTH] = MAX77686_ALARM2_MONTH, |
| 151 | [REG_ALARM2_YEAR] = MAX77686_ALARM2_YEAR, |
| 152 | [REG_ALARM2_DATE] = MAX77686_ALARM2_DATE, |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 153 | [REG_RTC_AE1] = REG_RTC_NONE, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 154 | }; |
| 155 | |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 156 | static const struct max77686_rtc_driver_data max77686_drv_data = { |
| 157 | .delay = 16000, |
| 158 | .mask = 0x7f, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 159 | .map = max77686_map, |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 160 | .alarm_enable_reg = false, |
| 161 | .separate_i2c_addr = true, |
| 162 | }; |
| 163 | |
| 164 | static const unsigned int max77802_map[REG_RTC_END] = { |
| 165 | [REG_RTC_CONTROLM] = MAX77802_RTC_CONTROLM, |
| 166 | [REG_RTC_CONTROL] = MAX77802_RTC_CONTROL, |
| 167 | [REG_RTC_UPDATE0] = MAX77802_RTC_UPDATE0, |
| 168 | [REG_WTSR_SMPL_CNTL] = MAX77802_WTSR_SMPL_CNTL, |
| 169 | [REG_RTC_SEC] = MAX77802_RTC_SEC, |
| 170 | [REG_RTC_MIN] = MAX77802_RTC_MIN, |
| 171 | [REG_RTC_HOUR] = MAX77802_RTC_HOUR, |
| 172 | [REG_RTC_WEEKDAY] = MAX77802_RTC_WEEKDAY, |
| 173 | [REG_RTC_MONTH] = MAX77802_RTC_MONTH, |
| 174 | [REG_RTC_YEAR] = MAX77802_RTC_YEAR, |
| 175 | [REG_RTC_DATE] = MAX77802_RTC_DATE, |
| 176 | [REG_ALARM1_SEC] = MAX77802_ALARM1_SEC, |
| 177 | [REG_ALARM1_MIN] = MAX77802_ALARM1_MIN, |
| 178 | [REG_ALARM1_HOUR] = MAX77802_ALARM1_HOUR, |
| 179 | [REG_ALARM1_WEEKDAY] = MAX77802_ALARM1_WEEKDAY, |
| 180 | [REG_ALARM1_MONTH] = MAX77802_ALARM1_MONTH, |
| 181 | [REG_ALARM1_YEAR] = MAX77802_ALARM1_YEAR, |
| 182 | [REG_ALARM1_DATE] = MAX77802_ALARM1_DATE, |
| 183 | [REG_ALARM2_SEC] = MAX77802_ALARM2_SEC, |
| 184 | [REG_ALARM2_MIN] = MAX77802_ALARM2_MIN, |
| 185 | [REG_ALARM2_HOUR] = MAX77802_ALARM2_HOUR, |
| 186 | [REG_ALARM2_WEEKDAY] = MAX77802_ALARM2_WEEKDAY, |
| 187 | [REG_ALARM2_MONTH] = MAX77802_ALARM2_MONTH, |
| 188 | [REG_ALARM2_YEAR] = MAX77802_ALARM2_YEAR, |
| 189 | [REG_ALARM2_DATE] = MAX77802_ALARM2_DATE, |
| 190 | [REG_RTC_AE1] = MAX77802_RTC_AE1, |
| 191 | }; |
| 192 | |
| 193 | static const struct max77686_rtc_driver_data max77802_drv_data = { |
| 194 | .delay = 200, |
| 195 | .mask = 0xff, |
| 196 | .map = max77802_map, |
| 197 | .alarm_enable_reg = true, |
| 198 | .separate_i2c_addr = false, |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 199 | }; |
| 200 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 201 | static void max77686_rtc_data_to_tm(u8 *data, struct rtc_time *tm, |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 202 | struct max77686_rtc_info *info) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 203 | { |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 204 | u8 mask = info->drv_data->mask; |
| 205 | |
| 206 | tm->tm_sec = data[RTC_SEC] & mask; |
| 207 | tm->tm_min = data[RTC_MIN] & mask; |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 208 | if (info->rtc_24hr_mode) { |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 209 | tm->tm_hour = data[RTC_HOUR] & 0x1f; |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 210 | } else { |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 211 | tm->tm_hour = data[RTC_HOUR] & 0x0f; |
| 212 | if (data[RTC_HOUR] & HOUR_PM_MASK) |
| 213 | tm->tm_hour += 12; |
| 214 | } |
| 215 | |
Javier Martinez Canillas | a20cd88 | 2014-10-13 15:53:03 -0700 | [diff] [blame] | 216 | /* Only a single bit is set in data[], so fls() would be equivalent */ |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 217 | tm->tm_wday = ffs(data[RTC_WEEKDAY] & mask) - 1; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 218 | tm->tm_mday = data[RTC_DATE] & 0x1f; |
| 219 | tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 220 | tm->tm_year = data[RTC_YEAR] & mask; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 221 | tm->tm_yday = 0; |
| 222 | tm->tm_isdst = 0; |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 223 | |
| 224 | /* |
| 225 | * MAX77686 uses 1 bit from sec/min/hour/etc RTC registers and the |
| 226 | * year values are just 0..99 so add 100 to support up to 2099. |
| 227 | */ |
| 228 | if (!info->drv_data->alarm_enable_reg) |
| 229 | tm->tm_year += 100; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 230 | } |
| 231 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 232 | static int max77686_rtc_tm_to_data(struct rtc_time *tm, u8 *data, |
| 233 | struct max77686_rtc_info *info) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 234 | { |
| 235 | data[RTC_SEC] = tm->tm_sec; |
| 236 | data[RTC_MIN] = tm->tm_min; |
| 237 | data[RTC_HOUR] = tm->tm_hour; |
| 238 | data[RTC_WEEKDAY] = 1 << tm->tm_wday; |
| 239 | data[RTC_DATE] = tm->tm_mday; |
| 240 | data[RTC_MONTH] = tm->tm_mon + 1; |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 241 | |
| 242 | if (info->drv_data->alarm_enable_reg) { |
| 243 | data[RTC_YEAR] = tm->tm_year; |
| 244 | return 0; |
| 245 | } |
| 246 | |
Sachin Kamat | cdf5f4a | 2013-07-03 15:05:55 -0700 | [diff] [blame] | 247 | data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 248 | |
| 249 | if (tm->tm_year < 100) { |
Javier Martinez Canillas | 1e5813b | 2016-01-27 00:36:43 -0300 | [diff] [blame] | 250 | dev_err(info->dev, "RTC cannot handle the year %d.\n", |
Joe Perches | a737e83 | 2015-04-16 12:46:14 -0700 | [diff] [blame] | 251 | 1900 + tm->tm_year); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 252 | return -EINVAL; |
| 253 | } |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 254 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static int max77686_rtc_update(struct max77686_rtc_info *info, |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 259 | enum MAX77686_RTC_OP op) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 260 | { |
| 261 | int ret; |
| 262 | unsigned int data; |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 263 | unsigned long delay = info->drv_data->delay; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 264 | |
| 265 | if (op == MAX77686_RTC_WRITE) |
| 266 | data = 1 << RTC_UDR_SHIFT; |
| 267 | else |
| 268 | data = 1 << RTC_RBUDR_SHIFT; |
| 269 | |
| 270 | ret = regmap_update_bits(info->max77686->rtc_regmap, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 271 | info->drv_data->map[REG_RTC_UPDATE0], |
| 272 | data, data); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 273 | if (ret < 0) |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 274 | dev_err(info->dev, "Fail to write update reg(ret=%d, data=0x%x)\n", |
| 275 | ret, data); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 276 | else { |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 277 | /* Minimum delay required before RTC update. */ |
| 278 | usleep_range(delay, delay * 2); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | return ret; |
| 282 | } |
| 283 | |
| 284 | static int max77686_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 285 | { |
| 286 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 287 | u8 data[RTC_NR_TIME]; |
| 288 | int ret; |
| 289 | |
| 290 | mutex_lock(&info->lock); |
| 291 | |
| 292 | ret = max77686_rtc_update(info, MAX77686_RTC_READ); |
| 293 | if (ret < 0) |
| 294 | goto out; |
| 295 | |
| 296 | ret = regmap_bulk_read(info->max77686->rtc_regmap, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 297 | info->drv_data->map[REG_RTC_SEC], |
| 298 | data, ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 299 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 300 | dev_err(info->dev, "Fail to read time reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 301 | goto out; |
| 302 | } |
| 303 | |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 304 | max77686_rtc_data_to_tm(data, tm, info); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 305 | |
| 306 | ret = rtc_valid_tm(tm); |
| 307 | |
| 308 | out: |
| 309 | mutex_unlock(&info->lock); |
| 310 | return ret; |
| 311 | } |
| 312 | |
| 313 | static int max77686_rtc_set_time(struct device *dev, struct rtc_time *tm) |
| 314 | { |
| 315 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 316 | u8 data[RTC_NR_TIME]; |
| 317 | int ret; |
| 318 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 319 | ret = max77686_rtc_tm_to_data(tm, data, info); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 320 | if (ret < 0) |
| 321 | return ret; |
| 322 | |
| 323 | mutex_lock(&info->lock); |
| 324 | |
| 325 | ret = regmap_bulk_write(info->max77686->rtc_regmap, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 326 | info->drv_data->map[REG_RTC_SEC], |
| 327 | data, ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 328 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 329 | dev_err(info->dev, "Fail to write time reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 330 | goto out; |
| 331 | } |
| 332 | |
| 333 | ret = max77686_rtc_update(info, MAX77686_RTC_WRITE); |
| 334 | |
| 335 | out: |
| 336 | mutex_unlock(&info->lock); |
| 337 | return ret; |
| 338 | } |
| 339 | |
| 340 | static int max77686_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 341 | { |
| 342 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 343 | u8 data[RTC_NR_TIME]; |
| 344 | unsigned int val; |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 345 | const unsigned int *map = info->drv_data->map; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 346 | int i, ret; |
| 347 | |
| 348 | mutex_lock(&info->lock); |
| 349 | |
| 350 | ret = max77686_rtc_update(info, MAX77686_RTC_READ); |
| 351 | if (ret < 0) |
| 352 | goto out; |
| 353 | |
| 354 | ret = regmap_bulk_read(info->max77686->rtc_regmap, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 355 | map[REG_ALARM1_SEC], data, ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 356 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 357 | dev_err(info->dev, "Fail to read alarm reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 358 | goto out; |
| 359 | } |
| 360 | |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 361 | max77686_rtc_data_to_tm(data, &alrm->time, info); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 362 | |
| 363 | alrm->enabled = 0; |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 364 | |
| 365 | if (info->drv_data->alarm_enable_reg) { |
| 366 | if (map[REG_RTC_AE1] == REG_RTC_NONE) { |
| 367 | ret = -EINVAL; |
| 368 | dev_err(info->dev, |
| 369 | "alarm enable register not set(%d)\n", ret); |
| 370 | goto out; |
| 371 | } |
| 372 | |
| 373 | ret = regmap_read(info->max77686->regmap, |
| 374 | map[REG_RTC_AE1], &val); |
| 375 | if (ret < 0) { |
| 376 | dev_err(info->dev, |
| 377 | "fail to read alarm enable(%d)\n", ret); |
| 378 | goto out; |
| 379 | } |
| 380 | |
| 381 | if (val) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 382 | alrm->enabled = 1; |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 383 | } else { |
| 384 | for (i = 0; i < ARRAY_SIZE(data); i++) { |
| 385 | if (data[i] & ALARM_ENABLE_MASK) { |
| 386 | alrm->enabled = 1; |
| 387 | break; |
| 388 | } |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 389 | } |
| 390 | } |
| 391 | |
| 392 | alrm->pending = 0; |
Sangjung Woo | 1748cbf | 2013-09-11 14:24:21 -0700 | [diff] [blame] | 393 | ret = regmap_read(info->max77686->regmap, MAX77686_REG_STATUS2, &val); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 394 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 395 | dev_err(info->dev, "Fail to read status2 reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 396 | goto out; |
| 397 | } |
| 398 | |
| 399 | if (val & (1 << 4)) /* RTCA1 */ |
| 400 | alrm->pending = 1; |
| 401 | |
| 402 | out: |
| 403 | mutex_unlock(&info->lock); |
Javier Martinez Canillas | 7cdffeb | 2016-01-27 00:36:37 -0300 | [diff] [blame] | 404 | return ret; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | static int max77686_rtc_stop_alarm(struct max77686_rtc_info *info) |
| 408 | { |
| 409 | u8 data[RTC_NR_TIME]; |
| 410 | int ret, i; |
| 411 | struct rtc_time tm; |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 412 | const unsigned int *map = info->drv_data->map; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 413 | |
| 414 | if (!mutex_is_locked(&info->lock)) |
| 415 | dev_warn(info->dev, "%s: should have mutex locked\n", __func__); |
| 416 | |
| 417 | ret = max77686_rtc_update(info, MAX77686_RTC_READ); |
| 418 | if (ret < 0) |
| 419 | goto out; |
| 420 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 421 | if (info->drv_data->alarm_enable_reg) { |
| 422 | if (map[REG_RTC_AE1] == REG_RTC_NONE) { |
| 423 | ret = -EINVAL; |
| 424 | dev_err(info->dev, |
| 425 | "alarm enable register not set(%d)\n", ret); |
| 426 | goto out; |
| 427 | } |
| 428 | |
| 429 | ret = regmap_write(info->max77686->regmap, map[REG_RTC_AE1], 0); |
| 430 | } else { |
| 431 | ret = regmap_bulk_read(info->max77686->rtc_regmap, |
| 432 | map[REG_ALARM1_SEC], data, |
| 433 | ARRAY_SIZE(data)); |
| 434 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 435 | dev_err(info->dev, "Fail to read alarm reg(%d)\n", ret); |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 436 | goto out; |
| 437 | } |
| 438 | |
| 439 | max77686_rtc_data_to_tm(data, &tm, info); |
| 440 | |
| 441 | for (i = 0; i < ARRAY_SIZE(data); i++) |
| 442 | data[i] &= ~ALARM_ENABLE_MASK; |
| 443 | |
| 444 | ret = regmap_bulk_write(info->max77686->rtc_regmap, |
| 445 | map[REG_ALARM1_SEC], data, |
| 446 | ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 447 | } |
| 448 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 449 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 450 | dev_err(info->dev, "Fail to write alarm reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 451 | goto out; |
| 452 | } |
| 453 | |
| 454 | ret = max77686_rtc_update(info, MAX77686_RTC_WRITE); |
| 455 | out: |
| 456 | return ret; |
| 457 | } |
| 458 | |
| 459 | static int max77686_rtc_start_alarm(struct max77686_rtc_info *info) |
| 460 | { |
| 461 | u8 data[RTC_NR_TIME]; |
| 462 | int ret; |
| 463 | struct rtc_time tm; |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 464 | const unsigned int *map = info->drv_data->map; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 465 | |
| 466 | if (!mutex_is_locked(&info->lock)) |
| 467 | dev_warn(info->dev, "%s: should have mutex locked\n", __func__); |
| 468 | |
| 469 | ret = max77686_rtc_update(info, MAX77686_RTC_READ); |
| 470 | if (ret < 0) |
| 471 | goto out; |
| 472 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 473 | if (info->drv_data->alarm_enable_reg) { |
| 474 | ret = regmap_write(info->max77686->regmap, map[REG_RTC_AE1], |
| 475 | MAX77802_ALARM_ENABLE_VALUE); |
| 476 | } else { |
| 477 | ret = regmap_bulk_read(info->max77686->rtc_regmap, |
| 478 | map[REG_ALARM1_SEC], data, |
| 479 | ARRAY_SIZE(data)); |
| 480 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 481 | dev_err(info->dev, "Fail to read alarm reg(%d)\n", ret); |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 482 | goto out; |
| 483 | } |
| 484 | |
| 485 | max77686_rtc_data_to_tm(data, &tm, info); |
| 486 | |
| 487 | data[RTC_SEC] |= (1 << ALARM_ENABLE_SHIFT); |
| 488 | data[RTC_MIN] |= (1 << ALARM_ENABLE_SHIFT); |
| 489 | data[RTC_HOUR] |= (1 << ALARM_ENABLE_SHIFT); |
| 490 | data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; |
| 491 | if (data[RTC_MONTH] & 0xf) |
| 492 | data[RTC_MONTH] |= (1 << ALARM_ENABLE_SHIFT); |
| 493 | if (data[RTC_YEAR] & info->drv_data->mask) |
| 494 | data[RTC_YEAR] |= (1 << ALARM_ENABLE_SHIFT); |
| 495 | if (data[RTC_DATE] & 0x1f) |
| 496 | data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT); |
| 497 | |
| 498 | ret = regmap_bulk_write(info->max77686->rtc_regmap, |
| 499 | map[REG_ALARM1_SEC], data, |
| 500 | ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 501 | } |
| 502 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 503 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 504 | dev_err(info->dev, "Fail to write alarm reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 505 | goto out; |
| 506 | } |
| 507 | |
| 508 | ret = max77686_rtc_update(info, MAX77686_RTC_WRITE); |
| 509 | out: |
| 510 | return ret; |
| 511 | } |
| 512 | |
| 513 | static int max77686_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 514 | { |
| 515 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 516 | u8 data[RTC_NR_TIME]; |
| 517 | int ret; |
| 518 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 519 | ret = max77686_rtc_tm_to_data(&alrm->time, data, info); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 520 | if (ret < 0) |
| 521 | return ret; |
| 522 | |
| 523 | mutex_lock(&info->lock); |
| 524 | |
| 525 | ret = max77686_rtc_stop_alarm(info); |
| 526 | if (ret < 0) |
| 527 | goto out; |
| 528 | |
| 529 | ret = regmap_bulk_write(info->max77686->rtc_regmap, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 530 | info->drv_data->map[REG_ALARM1_SEC], |
| 531 | data, ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 532 | |
| 533 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 534 | dev_err(info->dev, "Fail to write alarm reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 535 | goto out; |
| 536 | } |
| 537 | |
| 538 | ret = max77686_rtc_update(info, MAX77686_RTC_WRITE); |
| 539 | if (ret < 0) |
| 540 | goto out; |
| 541 | |
| 542 | if (alrm->enabled) |
| 543 | ret = max77686_rtc_start_alarm(info); |
| 544 | out: |
| 545 | mutex_unlock(&info->lock); |
| 546 | return ret; |
| 547 | } |
| 548 | |
| 549 | static int max77686_rtc_alarm_irq_enable(struct device *dev, |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 550 | unsigned int enabled) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 551 | { |
| 552 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 553 | int ret; |
| 554 | |
| 555 | mutex_lock(&info->lock); |
| 556 | if (enabled) |
| 557 | ret = max77686_rtc_start_alarm(info); |
| 558 | else |
| 559 | ret = max77686_rtc_stop_alarm(info); |
| 560 | mutex_unlock(&info->lock); |
| 561 | |
| 562 | return ret; |
| 563 | } |
| 564 | |
| 565 | static irqreturn_t max77686_rtc_alarm_irq(int irq, void *data) |
| 566 | { |
| 567 | struct max77686_rtc_info *info = data; |
| 568 | |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 569 | dev_dbg(info->dev, "RTC alarm IRQ: %d\n", irq); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 570 | |
| 571 | rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); |
| 572 | |
| 573 | return IRQ_HANDLED; |
| 574 | } |
| 575 | |
| 576 | static const struct rtc_class_ops max77686_rtc_ops = { |
| 577 | .read_time = max77686_rtc_read_time, |
| 578 | .set_time = max77686_rtc_set_time, |
| 579 | .read_alarm = max77686_rtc_read_alarm, |
| 580 | .set_alarm = max77686_rtc_set_alarm, |
| 581 | .alarm_irq_enable = max77686_rtc_alarm_irq_enable, |
| 582 | }; |
| 583 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 584 | static int max77686_rtc_init_reg(struct max77686_rtc_info *info) |
| 585 | { |
| 586 | u8 data[2]; |
| 587 | int ret; |
| 588 | |
| 589 | /* Set RTC control register : Binary mode, 24hour mdoe */ |
| 590 | data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 591 | data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 592 | |
| 593 | info->rtc_24hr_mode = 1; |
| 594 | |
Javier Martinez Canillas | 862f945 | 2016-01-27 00:36:38 -0300 | [diff] [blame] | 595 | ret = regmap_bulk_write(info->max77686->rtc_regmap, |
Javier Martinez Canillas | 90a5698 | 2016-01-27 00:36:41 -0300 | [diff] [blame] | 596 | info->drv_data->map[REG_RTC_CONTROLM], |
| 597 | data, ARRAY_SIZE(data)); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 598 | if (ret < 0) { |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 599 | dev_err(info->dev, "Fail to write controlm reg(%d)\n", ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 600 | return ret; |
| 601 | } |
| 602 | |
| 603 | ret = max77686_rtc_update(info, MAX77686_RTC_WRITE); |
| 604 | return ret; |
| 605 | } |
| 606 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 607 | static int max77686_rtc_probe(struct platform_device *pdev) |
| 608 | { |
| 609 | struct max77686_dev *max77686 = dev_get_drvdata(pdev->dev.parent); |
| 610 | struct max77686_rtc_info *info; |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 611 | const struct platform_device_id *id = platform_get_device_id(pdev); |
Javier Martinez Canillas | 6f1c1e7 | 2014-07-04 22:24:04 +0200 | [diff] [blame] | 612 | int ret; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 613 | |
Jingoo Han | 0f64f85 | 2013-04-29 16:18:30 -0700 | [diff] [blame] | 614 | info = devm_kzalloc(&pdev->dev, sizeof(struct max77686_rtc_info), |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 615 | GFP_KERNEL); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 616 | if (!info) |
| 617 | return -ENOMEM; |
| 618 | |
| 619 | mutex_init(&info->lock); |
| 620 | info->dev = &pdev->dev; |
| 621 | info->max77686 = max77686; |
| 622 | info->rtc = max77686->rtc; |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 623 | info->drv_data = (const struct max77686_rtc_driver_data *) |
| 624 | id->driver_data; |
Javier Martinez Canillas | 6f1c1e7 | 2014-07-04 22:24:04 +0200 | [diff] [blame] | 625 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 626 | if (!info->drv_data->separate_i2c_addr) |
| 627 | info->max77686->rtc_regmap = info->max77686->regmap; |
| 628 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 629 | platform_set_drvdata(pdev, info); |
| 630 | |
| 631 | ret = max77686_rtc_init_reg(info); |
| 632 | |
| 633 | if (ret < 0) { |
| 634 | dev_err(&pdev->dev, "Failed to initialize RTC reg:%d\n", ret); |
| 635 | goto err_rtc; |
| 636 | } |
| 637 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 638 | device_init_wakeup(&pdev->dev, 1); |
| 639 | |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 640 | info->rtc_dev = devm_rtc_device_register(&pdev->dev, id->name, |
Jingoo Han | f56950e | 2013-04-29 16:19:05 -0700 | [diff] [blame] | 641 | &max77686_rtc_ops, THIS_MODULE); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 642 | |
| 643 | if (IS_ERR(info->rtc_dev)) { |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 644 | ret = PTR_ERR(info->rtc_dev); |
| 645 | dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret); |
| 646 | if (ret == 0) |
| 647 | ret = -EINVAL; |
| 648 | goto err_rtc; |
| 649 | } |
Javier Martinez Canillas | 6f1c1e7 | 2014-07-04 22:24:04 +0200 | [diff] [blame] | 650 | |
Javier Martinez Canillas | 1745d6d | 2014-10-13 15:52:59 -0700 | [diff] [blame] | 651 | if (!max77686->rtc_irq_data) { |
| 652 | ret = -EINVAL; |
Krzysztof Kozlowski | bf035f4 | 2016-01-27 15:46:11 +0900 | [diff] [blame] | 653 | dev_err(&pdev->dev, "No RTC regmap IRQ chip\n"); |
Javier Martinez Canillas | 1745d6d | 2014-10-13 15:52:59 -0700 | [diff] [blame] | 654 | goto err_rtc; |
| 655 | } |
| 656 | |
Javier Martinez Canillas | 6f1c1e7 | 2014-07-04 22:24:04 +0200 | [diff] [blame] | 657 | info->virq = regmap_irq_get_virq(max77686->rtc_irq_data, |
| 658 | MAX77686_RTCIRQ_RTCA1); |
Krzysztof Kozlowski | fb166ba | 2016-02-04 09:26:35 +0900 | [diff] [blame] | 659 | if (info->virq <= 0) { |
Sachin Kamat | ad81903 | 2013-04-29 16:20:12 -0700 | [diff] [blame] | 660 | ret = -ENXIO; |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 661 | goto err_rtc; |
Sachin Kamat | ad81903 | 2013-04-29 16:20:12 -0700 | [diff] [blame] | 662 | } |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 663 | |
Javier Martinez Canillas | 6f1c1e7 | 2014-07-04 22:24:04 +0200 | [diff] [blame] | 664 | ret = devm_request_threaded_irq(&pdev->dev, info->virq, NULL, |
Laxman Dewangan | 0b4f8b0 | 2016-02-09 22:56:30 +0530 | [diff] [blame^] | 665 | max77686_rtc_alarm_irq, 0, |
| 666 | "rtc-alarm1", info); |
Sachin Kamat | ad81903 | 2013-04-29 16:20:12 -0700 | [diff] [blame] | 667 | if (ret < 0) |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 668 | dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", |
| 669 | info->virq, ret); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 670 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 671 | err_rtc: |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 672 | return ret; |
| 673 | } |
| 674 | |
Doug Anderson | e7f7fc7 | 2014-10-13 15:52:55 -0700 | [diff] [blame] | 675 | #ifdef CONFIG_PM_SLEEP |
| 676 | static int max77686_rtc_suspend(struct device *dev) |
| 677 | { |
| 678 | if (device_may_wakeup(dev)) { |
| 679 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 680 | |
| 681 | return enable_irq_wake(info->virq); |
| 682 | } |
| 683 | |
| 684 | return 0; |
| 685 | } |
| 686 | |
| 687 | static int max77686_rtc_resume(struct device *dev) |
| 688 | { |
| 689 | if (device_may_wakeup(dev)) { |
| 690 | struct max77686_rtc_info *info = dev_get_drvdata(dev); |
| 691 | |
| 692 | return disable_irq_wake(info->virq); |
| 693 | } |
| 694 | |
| 695 | return 0; |
| 696 | } |
| 697 | #endif |
| 698 | |
| 699 | static SIMPLE_DEV_PM_OPS(max77686_rtc_pm_ops, |
| 700 | max77686_rtc_suspend, max77686_rtc_resume); |
| 701 | |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 702 | static const struct platform_device_id rtc_id[] = { |
Javier Martinez Canillas | 01ea01b | 2016-01-27 00:36:40 -0300 | [diff] [blame] | 703 | { "max77686-rtc", .driver_data = (kernel_ulong_t)&max77686_drv_data, }, |
Javier Martinez Canillas | f903129 | 2016-01-27 00:36:42 -0300 | [diff] [blame] | 704 | { "max77802-rtc", .driver_data = (kernel_ulong_t)&max77802_drv_data, }, |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 705 | {}, |
| 706 | }; |
Javier Martinez Canillas | 2d0cca0 | 2015-05-13 17:18:01 +0200 | [diff] [blame] | 707 | MODULE_DEVICE_TABLE(platform, rtc_id); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 708 | |
| 709 | static struct platform_driver max77686_rtc_driver = { |
| 710 | .driver = { |
| 711 | .name = "max77686-rtc", |
Doug Anderson | e7f7fc7 | 2014-10-13 15:52:55 -0700 | [diff] [blame] | 712 | .pm = &max77686_rtc_pm_ops, |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 713 | }, |
| 714 | .probe = max77686_rtc_probe, |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 715 | .id_table = rtc_id, |
| 716 | }; |
| 717 | |
Jingoo Han | 0c58ff5 | 2013-04-29 16:18:28 -0700 | [diff] [blame] | 718 | module_platform_driver(max77686_rtc_driver); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 719 | |
| 720 | MODULE_DESCRIPTION("Maxim MAX77686 RTC driver"); |
Jingoo Han | f5b1d3c | 2013-04-29 16:18:29 -0700 | [diff] [blame] | 721 | MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>"); |
Jonghwa Lee | fca1dd0 | 2013-02-21 16:44:26 -0800 | [diff] [blame] | 722 | MODULE_LICENSE("GPL"); |