Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 1 | /* |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 2 | * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 3 | * http://www.samsung.com |
| 4 | * |
| 5 | * Copyright (C) 2013 Google, Inc |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/i2c.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 20 | #include <linux/bcd.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 21 | #include <linux/regmap.h> |
| 22 | #include <linux/rtc.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 23 | #include <linux/platform_device.h> |
| 24 | #include <linux/mfd/samsung/core.h> |
| 25 | #include <linux/mfd/samsung/irq.h> |
| 26 | #include <linux/mfd/samsung/rtc.h> |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 27 | #include <linux/mfd/samsung/s2mps14.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 28 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 29 | /* |
| 30 | * Maximum number of retries for checking changes in UDR field |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 31 | * of S5M_RTC_UDR_CON register (to limit possible endless loop). |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 32 | * |
| 33 | * After writing to RTC registers (setting time or alarm) read the UDR field |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 34 | * in S5M_RTC_UDR_CON register. UDR is auto-cleared when data have |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 35 | * been transferred. |
| 36 | */ |
| 37 | #define UDR_READ_RETRY_CNT 5 |
| 38 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 39 | /* Registers used by the driver which are different between chipsets. */ |
| 40 | struct s5m_rtc_reg_config { |
| 41 | /* Number of registers used for setting time/alarm0/alarm1 */ |
| 42 | unsigned int regs_count; |
| 43 | /* First register for time, seconds */ |
| 44 | unsigned int time; |
| 45 | /* RTC control register */ |
| 46 | unsigned int ctrl; |
| 47 | /* First register for alarm 0, seconds */ |
| 48 | unsigned int alarm0; |
| 49 | /* First register for alarm 1, seconds */ |
| 50 | unsigned int alarm1; |
| 51 | /* SMPL/WTSR register */ |
| 52 | unsigned int smpl_wtsr; |
| 53 | /* |
| 54 | * Register for update flag (UDR). Typically setting UDR field to 1 |
| 55 | * will enable update of time or alarm register. Then it will be |
| 56 | * auto-cleared after successful update. |
| 57 | */ |
| 58 | unsigned int rtc_udr_update; |
| 59 | /* Mask for UDR field in 'rtc_udr_update' register */ |
| 60 | unsigned int rtc_udr_mask; |
| 61 | }; |
| 62 | |
| 63 | /* Register map for S5M8763 and S5M8767 */ |
| 64 | static const struct s5m_rtc_reg_config s5m_rtc_regs = { |
| 65 | .regs_count = 8, |
| 66 | .time = S5M_RTC_SEC, |
| 67 | .ctrl = S5M_ALARM1_CONF, |
| 68 | .alarm0 = S5M_ALARM0_SEC, |
| 69 | .alarm1 = S5M_ALARM1_SEC, |
| 70 | .smpl_wtsr = S5M_WTSR_SMPL_CNTL, |
| 71 | .rtc_udr_update = S5M_RTC_UDR_CON, |
| 72 | .rtc_udr_mask = S5M_RTC_UDR_MASK, |
| 73 | }; |
| 74 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 75 | /* |
| 76 | * Register map for S2MPS14. |
| 77 | * It may be also suitable for S2MPS11 but this was not tested. |
| 78 | */ |
| 79 | static const struct s5m_rtc_reg_config s2mps_rtc_regs = { |
| 80 | .regs_count = 7, |
| 81 | .time = S2MPS_RTC_SEC, |
| 82 | .ctrl = S2MPS_RTC_CTRL, |
| 83 | .alarm0 = S2MPS_ALARM0_SEC, |
| 84 | .alarm1 = S2MPS_ALARM1_SEC, |
| 85 | .smpl_wtsr = S2MPS_WTSR_SMPL_CNTL, |
| 86 | .rtc_udr_update = S2MPS_RTC_UDR_CON, |
| 87 | .rtc_udr_mask = S2MPS_RTC_WUDR_MASK, |
| 88 | }; |
| 89 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 90 | struct s5m_rtc_info { |
| 91 | struct device *dev; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 92 | struct i2c_client *i2c; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 93 | struct sec_pmic_dev *s5m87xx; |
Geert Uytterhoeven | 5ccb7d7 | 2013-12-12 17:12:25 -0800 | [diff] [blame] | 94 | struct regmap *regmap; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 95 | struct rtc_device *rtc_dev; |
| 96 | int irq; |
| 97 | int device_type; |
| 98 | int rtc_24hr_mode; |
| 99 | bool wtsr_smpl; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 100 | const struct s5m_rtc_reg_config *regs; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 101 | }; |
| 102 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 103 | static const struct regmap_config s5m_rtc_regmap_config = { |
| 104 | .reg_bits = 8, |
| 105 | .val_bits = 8, |
| 106 | |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 107 | .max_register = S5M_RTC_REG_MAX, |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 108 | }; |
| 109 | |
| 110 | static const struct regmap_config s2mps14_rtc_regmap_config = { |
| 111 | .reg_bits = 8, |
| 112 | .val_bits = 8, |
| 113 | |
| 114 | .max_register = S2MPS_RTC_REG_MAX, |
| 115 | }; |
| 116 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 117 | static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, |
| 118 | int rtc_24hr_mode) |
| 119 | { |
| 120 | tm->tm_sec = data[RTC_SEC] & 0x7f; |
| 121 | tm->tm_min = data[RTC_MIN] & 0x7f; |
| 122 | if (rtc_24hr_mode) { |
| 123 | tm->tm_hour = data[RTC_HOUR] & 0x1f; |
| 124 | } else { |
| 125 | tm->tm_hour = data[RTC_HOUR] & 0x0f; |
| 126 | if (data[RTC_HOUR] & HOUR_PM_MASK) |
| 127 | tm->tm_hour += 12; |
| 128 | } |
| 129 | |
| 130 | tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); |
| 131 | tm->tm_mday = data[RTC_DATE] & 0x1f; |
| 132 | tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; |
| 133 | tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; |
| 134 | tm->tm_yday = 0; |
| 135 | tm->tm_isdst = 0; |
| 136 | } |
| 137 | |
| 138 | static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) |
| 139 | { |
| 140 | data[RTC_SEC] = tm->tm_sec; |
| 141 | data[RTC_MIN] = tm->tm_min; |
| 142 | |
| 143 | if (tm->tm_hour >= 12) |
| 144 | data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; |
| 145 | else |
| 146 | data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; |
| 147 | |
| 148 | data[RTC_WEEKDAY] = 1 << tm->tm_wday; |
| 149 | data[RTC_DATE] = tm->tm_mday; |
| 150 | data[RTC_MONTH] = tm->tm_mon + 1; |
| 151 | data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; |
| 152 | |
| 153 | if (tm->tm_year < 100) { |
| 154 | pr_err("s5m8767 RTC cannot handle the year %d.\n", |
| 155 | 1900 + tm->tm_year); |
| 156 | return -EINVAL; |
| 157 | } else { |
| 158 | return 0; |
| 159 | } |
| 160 | } |
| 161 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 162 | /* |
| 163 | * Read RTC_UDR_CON register and wait till UDR field is cleared. |
| 164 | * This indicates that time/alarm update ended. |
| 165 | */ |
| 166 | static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) |
| 167 | { |
| 168 | int ret, retry = UDR_READ_RETRY_CNT; |
| 169 | unsigned int data; |
| 170 | |
| 171 | do { |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 172 | ret = regmap_read(info->regmap, info->regs->rtc_udr_update, |
| 173 | &data); |
| 174 | } while (--retry && (data & info->regs->rtc_udr_mask) && !ret); |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 175 | |
| 176 | if (!retry) |
| 177 | dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); |
| 178 | |
| 179 | return ret; |
| 180 | } |
| 181 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 182 | static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, |
| 183 | struct rtc_wkalrm *alarm) |
| 184 | { |
| 185 | int ret; |
| 186 | unsigned int val; |
| 187 | |
| 188 | switch (info->device_type) { |
| 189 | case S5M8767X: |
| 190 | case S5M8763X: |
| 191 | ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); |
| 192 | val &= S5M_ALARM0_STATUS; |
| 193 | break; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 194 | case S2MPS14X: |
| 195 | ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, |
| 196 | &val); |
| 197 | val &= S2MPS_ALARM0_STATUS; |
| 198 | break; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 199 | default: |
| 200 | return -EINVAL; |
| 201 | } |
| 202 | if (ret < 0) |
| 203 | return ret; |
| 204 | |
| 205 | if (val) |
| 206 | alarm->pending = 1; |
| 207 | else |
| 208 | alarm->pending = 0; |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 213 | static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) |
| 214 | { |
| 215 | int ret; |
| 216 | unsigned int data; |
| 217 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 218 | ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 219 | if (ret < 0) { |
| 220 | dev_err(info->dev, "failed to read update reg(%d)\n", ret); |
| 221 | return ret; |
| 222 | } |
| 223 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 224 | data |= info->regs->rtc_udr_mask; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 225 | if (info->device_type == S5M8763X || info->device_type == S5M8767X) |
| 226 | data |= S5M_RTC_TIME_EN_MASK; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 227 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 228 | ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 229 | if (ret < 0) { |
| 230 | dev_err(info->dev, "failed to write update reg(%d)\n", ret); |
| 231 | return ret; |
| 232 | } |
| 233 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 234 | ret = s5m8767_wait_for_udr_update(info); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 235 | |
| 236 | return ret; |
| 237 | } |
| 238 | |
| 239 | static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) |
| 240 | { |
| 241 | int ret; |
| 242 | unsigned int data; |
| 243 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 244 | ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 245 | if (ret < 0) { |
| 246 | dev_err(info->dev, "%s: fail to read update reg(%d)\n", |
| 247 | __func__, ret); |
| 248 | return ret; |
| 249 | } |
| 250 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 251 | data |= info->regs->rtc_udr_mask; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 252 | switch (info->device_type) { |
| 253 | case S5M8763X: |
| 254 | case S5M8767X: |
| 255 | data &= ~S5M_RTC_TIME_EN_MASK; |
| 256 | break; |
| 257 | case S2MPS14X: |
| 258 | data |= S2MPS_RTC_RUDR_MASK; |
| 259 | break; |
| 260 | default: |
| 261 | return -EINVAL; |
| 262 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 263 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 264 | ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 265 | if (ret < 0) { |
| 266 | dev_err(info->dev, "%s: fail to write update reg(%d)\n", |
| 267 | __func__, ret); |
| 268 | return ret; |
| 269 | } |
| 270 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 271 | ret = s5m8767_wait_for_udr_update(info); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 272 | |
| 273 | return ret; |
| 274 | } |
| 275 | |
| 276 | static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) |
| 277 | { |
| 278 | tm->tm_sec = bcd2bin(data[RTC_SEC]); |
| 279 | tm->tm_min = bcd2bin(data[RTC_MIN]); |
| 280 | |
| 281 | if (data[RTC_HOUR] & HOUR_12) { |
| 282 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); |
| 283 | if (data[RTC_HOUR] & HOUR_PM) |
| 284 | tm->tm_hour += 12; |
| 285 | } else { |
| 286 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); |
| 287 | } |
| 288 | |
| 289 | tm->tm_wday = data[RTC_WEEKDAY] & 0x07; |
| 290 | tm->tm_mday = bcd2bin(data[RTC_DATE]); |
| 291 | tm->tm_mon = bcd2bin(data[RTC_MONTH]); |
| 292 | tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; |
| 293 | tm->tm_year -= 1900; |
| 294 | } |
| 295 | |
| 296 | static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) |
| 297 | { |
| 298 | data[RTC_SEC] = bin2bcd(tm->tm_sec); |
| 299 | data[RTC_MIN] = bin2bcd(tm->tm_min); |
| 300 | data[RTC_HOUR] = bin2bcd(tm->tm_hour); |
| 301 | data[RTC_WEEKDAY] = tm->tm_wday; |
| 302 | data[RTC_DATE] = bin2bcd(tm->tm_mday); |
| 303 | data[RTC_MONTH] = bin2bcd(tm->tm_mon); |
| 304 | data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); |
| 305 | data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); |
| 306 | } |
| 307 | |
| 308 | static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 309 | { |
| 310 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 311 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 312 | int ret; |
| 313 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 314 | if (info->device_type == S2MPS14X) { |
| 315 | ret = regmap_update_bits(info->regmap, |
| 316 | info->regs->rtc_udr_update, |
| 317 | S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK); |
| 318 | if (ret) { |
| 319 | dev_err(dev, |
| 320 | "Failed to prepare registers for time reading: %d\n", |
| 321 | ret); |
| 322 | return ret; |
| 323 | } |
| 324 | } |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 325 | ret = regmap_bulk_read(info->regmap, info->regs->time, data, |
| 326 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 327 | if (ret < 0) |
| 328 | return ret; |
| 329 | |
| 330 | switch (info->device_type) { |
| 331 | case S5M8763X: |
| 332 | s5m8763_data_to_tm(data, tm); |
| 333 | break; |
| 334 | |
| 335 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 336 | case S2MPS14X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 337 | s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); |
| 338 | break; |
| 339 | |
| 340 | default: |
| 341 | return -EINVAL; |
| 342 | } |
| 343 | |
| 344 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 345 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, |
| 346 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); |
| 347 | |
| 348 | return rtc_valid_tm(tm); |
| 349 | } |
| 350 | |
| 351 | static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) |
| 352 | { |
| 353 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 354 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 355 | int ret = 0; |
| 356 | |
| 357 | switch (info->device_type) { |
| 358 | case S5M8763X: |
| 359 | s5m8763_tm_to_data(tm, data); |
| 360 | break; |
| 361 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 362 | case S2MPS14X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 363 | ret = s5m8767_tm_to_data(tm, data); |
| 364 | break; |
| 365 | default: |
| 366 | return -EINVAL; |
| 367 | } |
| 368 | |
| 369 | if (ret < 0) |
| 370 | return ret; |
| 371 | |
| 372 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 373 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, |
| 374 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); |
| 375 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 376 | ret = regmap_raw_write(info->regmap, info->regs->time, data, |
| 377 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 378 | if (ret < 0) |
| 379 | return ret; |
| 380 | |
| 381 | ret = s5m8767_rtc_set_time_reg(info); |
| 382 | |
| 383 | return ret; |
| 384 | } |
| 385 | |
| 386 | static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 387 | { |
| 388 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 389 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 390 | unsigned int val; |
| 391 | int ret, i; |
| 392 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 393 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 394 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 395 | if (ret < 0) |
| 396 | return ret; |
| 397 | |
| 398 | switch (info->device_type) { |
| 399 | case S5M8763X: |
| 400 | s5m8763_data_to_tm(data, &alrm->time); |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 401 | ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 402 | if (ret < 0) |
| 403 | return ret; |
| 404 | |
| 405 | alrm->enabled = !!val; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 406 | break; |
| 407 | |
| 408 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 409 | case S2MPS14X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 410 | s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 411 | alrm->enabled = 0; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 412 | for (i = 0; i < info->regs->regs_count; i++) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 413 | if (data[i] & ALARM_ENABLE_MASK) { |
| 414 | alrm->enabled = 1; |
| 415 | break; |
| 416 | } |
| 417 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 418 | break; |
| 419 | |
| 420 | default: |
| 421 | return -EINVAL; |
| 422 | } |
| 423 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 424 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 425 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, |
| 426 | alrm->time.tm_mday, alrm->time.tm_hour, |
| 427 | alrm->time.tm_min, alrm->time.tm_sec, |
| 428 | alrm->time.tm_wday); |
| 429 | |
| 430 | ret = s5m_check_peding_alarm_interrupt(info, alrm); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 431 | |
| 432 | return 0; |
| 433 | } |
| 434 | |
| 435 | static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) |
| 436 | { |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 437 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 438 | int ret, i; |
| 439 | struct rtc_time tm; |
| 440 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 441 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 442 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 443 | if (ret < 0) |
| 444 | return ret; |
| 445 | |
| 446 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); |
| 447 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 448 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, |
| 449 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); |
| 450 | |
| 451 | switch (info->device_type) { |
| 452 | case S5M8763X: |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 453 | ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 454 | break; |
| 455 | |
| 456 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 457 | case S2MPS14X: |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 458 | for (i = 0; i < info->regs->regs_count; i++) |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 459 | data[i] &= ~ALARM_ENABLE_MASK; |
| 460 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 461 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 462 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 463 | if (ret < 0) |
| 464 | return ret; |
| 465 | |
| 466 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 467 | |
| 468 | break; |
| 469 | |
| 470 | default: |
| 471 | return -EINVAL; |
| 472 | } |
| 473 | |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) |
| 478 | { |
| 479 | int ret; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 480 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 481 | u8 alarm0_conf; |
| 482 | struct rtc_time tm; |
| 483 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 484 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 485 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 486 | if (ret < 0) |
| 487 | return ret; |
| 488 | |
| 489 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); |
| 490 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 491 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, |
| 492 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); |
| 493 | |
| 494 | switch (info->device_type) { |
| 495 | case S5M8763X: |
| 496 | alarm0_conf = 0x77; |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 497 | ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 498 | break; |
| 499 | |
| 500 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 501 | case S2MPS14X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 502 | data[RTC_SEC] |= ALARM_ENABLE_MASK; |
| 503 | data[RTC_MIN] |= ALARM_ENABLE_MASK; |
| 504 | data[RTC_HOUR] |= ALARM_ENABLE_MASK; |
| 505 | data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; |
| 506 | if (data[RTC_DATE] & 0x1f) |
| 507 | data[RTC_DATE] |= ALARM_ENABLE_MASK; |
| 508 | if (data[RTC_MONTH] & 0xf) |
| 509 | data[RTC_MONTH] |= ALARM_ENABLE_MASK; |
| 510 | if (data[RTC_YEAR1] & 0x7f) |
| 511 | data[RTC_YEAR1] |= ALARM_ENABLE_MASK; |
| 512 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 513 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 514 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 515 | if (ret < 0) |
| 516 | return ret; |
| 517 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 518 | |
| 519 | break; |
| 520 | |
| 521 | default: |
| 522 | return -EINVAL; |
| 523 | } |
| 524 | |
| 525 | return ret; |
| 526 | } |
| 527 | |
| 528 | static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 529 | { |
| 530 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 531 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 532 | int ret; |
| 533 | |
| 534 | switch (info->device_type) { |
| 535 | case S5M8763X: |
| 536 | s5m8763_tm_to_data(&alrm->time, data); |
| 537 | break; |
| 538 | |
| 539 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 540 | case S2MPS14X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 541 | s5m8767_tm_to_data(&alrm->time, data); |
| 542 | break; |
| 543 | |
| 544 | default: |
| 545 | return -EINVAL; |
| 546 | } |
| 547 | |
| 548 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 549 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, |
| 550 | alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, |
| 551 | alrm->time.tm_sec, alrm->time.tm_wday); |
| 552 | |
| 553 | ret = s5m_rtc_stop_alarm(info); |
| 554 | if (ret < 0) |
| 555 | return ret; |
| 556 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 557 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 558 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 559 | if (ret < 0) |
| 560 | return ret; |
| 561 | |
| 562 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 563 | if (ret < 0) |
| 564 | return ret; |
| 565 | |
| 566 | if (alrm->enabled) |
| 567 | ret = s5m_rtc_start_alarm(info); |
| 568 | |
| 569 | return ret; |
| 570 | } |
| 571 | |
| 572 | static int s5m_rtc_alarm_irq_enable(struct device *dev, |
| 573 | unsigned int enabled) |
| 574 | { |
| 575 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 576 | |
| 577 | if (enabled) |
| 578 | return s5m_rtc_start_alarm(info); |
| 579 | else |
| 580 | return s5m_rtc_stop_alarm(info); |
| 581 | } |
| 582 | |
| 583 | static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) |
| 584 | { |
| 585 | struct s5m_rtc_info *info = data; |
| 586 | |
| 587 | rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); |
| 588 | |
| 589 | return IRQ_HANDLED; |
| 590 | } |
| 591 | |
| 592 | static const struct rtc_class_ops s5m_rtc_ops = { |
| 593 | .read_time = s5m_rtc_read_time, |
| 594 | .set_time = s5m_rtc_set_time, |
| 595 | .read_alarm = s5m_rtc_read_alarm, |
| 596 | .set_alarm = s5m_rtc_set_alarm, |
| 597 | .alarm_irq_enable = s5m_rtc_alarm_irq_enable, |
| 598 | }; |
| 599 | |
| 600 | static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable) |
| 601 | { |
| 602 | int ret; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 603 | ret = regmap_update_bits(info->regmap, info->regs->smpl_wtsr, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 604 | WTSR_ENABLE_MASK, |
| 605 | enable ? WTSR_ENABLE_MASK : 0); |
| 606 | if (ret < 0) |
| 607 | dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n", |
| 608 | __func__, ret); |
| 609 | } |
| 610 | |
| 611 | static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable) |
| 612 | { |
| 613 | int ret; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 614 | ret = regmap_update_bits(info->regmap, info->regs->smpl_wtsr, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 615 | SMPL_ENABLE_MASK, |
| 616 | enable ? SMPL_ENABLE_MASK : 0); |
| 617 | if (ret < 0) |
| 618 | dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n", |
| 619 | __func__, ret); |
| 620 | } |
| 621 | |
| 622 | static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) |
| 623 | { |
| 624 | u8 data[2]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 625 | int ret; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 626 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 627 | switch (info->device_type) { |
| 628 | case S5M8763X: |
| 629 | case S5M8767X: |
| 630 | /* UDR update time. Default of 7.32 ms is too long. */ |
| 631 | ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, |
| 632 | S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); |
| 633 | if (ret < 0) |
| 634 | dev_err(info->dev, "%s: fail to change UDR time: %d\n", |
| 635 | __func__, ret); |
Krzysztof Kozlowski | 0c5f5d9 | 2014-06-10 15:18:43 -0700 | [diff] [blame] | 636 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 637 | /* Set RTC control register : Binary mode, 24hour mode */ |
| 638 | data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 639 | data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 640 | |
| 641 | ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); |
| 642 | break; |
| 643 | |
| 644 | case S2MPS14X: |
| 645 | data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 646 | ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); |
| 647 | break; |
| 648 | |
| 649 | default: |
| 650 | return -EINVAL; |
| 651 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 652 | |
| 653 | info->rtc_24hr_mode = 1; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 654 | if (ret < 0) { |
| 655 | dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", |
| 656 | __func__, ret); |
| 657 | return ret; |
| 658 | } |
| 659 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 660 | return ret; |
| 661 | } |
| 662 | |
| 663 | static int s5m_rtc_probe(struct platform_device *pdev) |
| 664 | { |
| 665 | struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); |
| 666 | struct sec_platform_data *pdata = s5m87xx->pdata; |
| 667 | struct s5m_rtc_info *info; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 668 | const struct regmap_config *regmap_cfg; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 669 | int ret, alarm_irq; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 670 | |
| 671 | if (!pdata) { |
| 672 | dev_err(pdev->dev.parent, "Platform data not supplied\n"); |
| 673 | return -ENODEV; |
| 674 | } |
| 675 | |
| 676 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
| 677 | if (!info) |
| 678 | return -ENOMEM; |
| 679 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 680 | switch (pdata->device_type) { |
| 681 | case S2MPS14X: |
| 682 | regmap_cfg = &s2mps14_rtc_regmap_config; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 683 | info->regs = &s2mps_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 684 | alarm_irq = S2MPS14_IRQ_RTCA0; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 685 | break; |
| 686 | case S5M8763X: |
| 687 | regmap_cfg = &s5m_rtc_regmap_config; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 688 | info->regs = &s5m_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 689 | alarm_irq = S5M8763_IRQ_ALARM0; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 690 | break; |
| 691 | case S5M8767X: |
| 692 | regmap_cfg = &s5m_rtc_regmap_config; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 693 | info->regs = &s5m_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 694 | alarm_irq = S5M8767_IRQ_RTCA1; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 695 | break; |
| 696 | default: |
| 697 | dev_err(&pdev->dev, "Device type is not supported by RTC driver\n"); |
| 698 | return -ENODEV; |
| 699 | } |
| 700 | |
| 701 | info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); |
| 702 | if (!info->i2c) { |
| 703 | dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); |
| 704 | return -ENODEV; |
| 705 | } |
| 706 | |
| 707 | info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); |
| 708 | if (IS_ERR(info->regmap)) { |
| 709 | ret = PTR_ERR(info->regmap); |
| 710 | dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", |
| 711 | ret); |
| 712 | goto err; |
| 713 | } |
| 714 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 715 | info->dev = &pdev->dev; |
| 716 | info->s5m87xx = s5m87xx; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 717 | info->device_type = s5m87xx->device_type; |
| 718 | info->wtsr_smpl = s5m87xx->wtsr_smpl; |
| 719 | |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 720 | info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); |
| 721 | if (info->irq <= 0) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 722 | ret = -EINVAL; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 723 | dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", |
| 724 | alarm_irq); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 725 | goto err; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | platform_set_drvdata(pdev, info); |
| 729 | |
| 730 | ret = s5m8767_rtc_init_reg(info); |
| 731 | |
| 732 | if (info->wtsr_smpl) { |
| 733 | s5m_rtc_enable_wtsr(info, true); |
| 734 | s5m_rtc_enable_smpl(info, true); |
| 735 | } |
| 736 | |
| 737 | device_init_wakeup(&pdev->dev, 1); |
| 738 | |
| 739 | info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", |
| 740 | &s5m_rtc_ops, THIS_MODULE); |
| 741 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 742 | if (IS_ERR(info->rtc_dev)) { |
| 743 | ret = PTR_ERR(info->rtc_dev); |
| 744 | goto err; |
| 745 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 746 | |
| 747 | ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, |
| 748 | s5m_rtc_alarm_irq, 0, "rtc-alarm0", |
| 749 | info); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 750 | if (ret < 0) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 751 | dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", |
| 752 | info->irq, ret); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 753 | goto err; |
| 754 | } |
| 755 | |
| 756 | return 0; |
| 757 | |
| 758 | err: |
| 759 | i2c_unregister_device(info->i2c); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 760 | |
| 761 | return ret; |
| 762 | } |
| 763 | |
| 764 | static void s5m_rtc_shutdown(struct platform_device *pdev) |
| 765 | { |
| 766 | struct s5m_rtc_info *info = platform_get_drvdata(pdev); |
| 767 | int i; |
| 768 | unsigned int val = 0; |
| 769 | if (info->wtsr_smpl) { |
| 770 | for (i = 0; i < 3; i++) { |
| 771 | s5m_rtc_enable_wtsr(info, false); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 772 | regmap_read(info->regmap, info->regs->smpl_wtsr, &val); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 773 | pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val); |
| 774 | if (val & WTSR_ENABLE_MASK) |
| 775 | pr_emerg("%s: fail to disable WTSR\n", |
| 776 | __func__); |
| 777 | else { |
| 778 | pr_info("%s: success to disable WTSR\n", |
| 779 | __func__); |
| 780 | break; |
| 781 | } |
| 782 | } |
| 783 | } |
| 784 | /* Disable SMPL when power off */ |
| 785 | s5m_rtc_enable_smpl(info, false); |
| 786 | } |
| 787 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 788 | static int s5m_rtc_remove(struct platform_device *pdev) |
| 789 | { |
| 790 | struct s5m_rtc_info *info = platform_get_drvdata(pdev); |
| 791 | |
| 792 | /* Perform also all shutdown steps when removing */ |
| 793 | s5m_rtc_shutdown(pdev); |
| 794 | i2c_unregister_device(info->i2c); |
| 795 | |
| 796 | return 0; |
| 797 | } |
| 798 | |
Geert Uytterhoeven | 11ba5a1 | 2014-01-23 15:55:19 -0800 | [diff] [blame] | 799 | #ifdef CONFIG_PM_SLEEP |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 800 | static int s5m_rtc_resume(struct device *dev) |
| 801 | { |
| 802 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 803 | int ret = 0; |
| 804 | |
| 805 | if (device_may_wakeup(dev)) |
| 806 | ret = disable_irq_wake(info->irq); |
| 807 | |
| 808 | return ret; |
| 809 | } |
| 810 | |
| 811 | static int s5m_rtc_suspend(struct device *dev) |
| 812 | { |
| 813 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 814 | int ret = 0; |
| 815 | |
| 816 | if (device_may_wakeup(dev)) |
| 817 | ret = enable_irq_wake(info->irq); |
| 818 | |
| 819 | return ret; |
| 820 | } |
Geert Uytterhoeven | 11ba5a1 | 2014-01-23 15:55:19 -0800 | [diff] [blame] | 821 | #endif /* CONFIG_PM_SLEEP */ |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 822 | |
| 823 | static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); |
| 824 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 825 | static const struct platform_device_id s5m_rtc_id[] = { |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 826 | { "s5m-rtc", S5M8767X }, |
| 827 | { "s2mps14-rtc", S2MPS14X }, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 828 | }; |
| 829 | |
| 830 | static struct platform_driver s5m_rtc_driver = { |
| 831 | .driver = { |
| 832 | .name = "s5m-rtc", |
| 833 | .owner = THIS_MODULE, |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 834 | .pm = &s5m_rtc_pm_ops, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 835 | }, |
| 836 | .probe = s5m_rtc_probe, |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 837 | .remove = s5m_rtc_remove, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 838 | .shutdown = s5m_rtc_shutdown, |
| 839 | .id_table = s5m_rtc_id, |
| 840 | }; |
| 841 | |
| 842 | module_platform_driver(s5m_rtc_driver); |
| 843 | |
| 844 | /* Module information */ |
| 845 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 846 | MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 847 | MODULE_LICENSE("GPL"); |
| 848 | MODULE_ALIAS("platform:s5m-rtc"); |