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; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 51 | /* |
| 52 | * Register for update flag (UDR). Typically setting UDR field to 1 |
| 53 | * will enable update of time or alarm register. Then it will be |
| 54 | * auto-cleared after successful update. |
| 55 | */ |
| 56 | unsigned int rtc_udr_update; |
| 57 | /* Mask for UDR field in 'rtc_udr_update' register */ |
| 58 | unsigned int rtc_udr_mask; |
| 59 | }; |
| 60 | |
| 61 | /* Register map for S5M8763 and S5M8767 */ |
| 62 | static const struct s5m_rtc_reg_config s5m_rtc_regs = { |
| 63 | .regs_count = 8, |
| 64 | .time = S5M_RTC_SEC, |
| 65 | .ctrl = S5M_ALARM1_CONF, |
| 66 | .alarm0 = S5M_ALARM0_SEC, |
| 67 | .alarm1 = S5M_ALARM1_SEC, |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 68 | .rtc_udr_update = S5M_RTC_UDR_CON, |
| 69 | .rtc_udr_mask = S5M_RTC_UDR_MASK, |
| 70 | }; |
| 71 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 72 | /* |
| 73 | * Register map for S2MPS14. |
| 74 | * It may be also suitable for S2MPS11 but this was not tested. |
| 75 | */ |
| 76 | static const struct s5m_rtc_reg_config s2mps_rtc_regs = { |
| 77 | .regs_count = 7, |
| 78 | .time = S2MPS_RTC_SEC, |
| 79 | .ctrl = S2MPS_RTC_CTRL, |
| 80 | .alarm0 = S2MPS_ALARM0_SEC, |
| 81 | .alarm1 = S2MPS_ALARM1_SEC, |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 82 | .rtc_udr_update = S2MPS_RTC_UDR_CON, |
| 83 | .rtc_udr_mask = S2MPS_RTC_WUDR_MASK, |
| 84 | }; |
| 85 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 86 | struct s5m_rtc_info { |
| 87 | struct device *dev; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 88 | struct i2c_client *i2c; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 89 | struct sec_pmic_dev *s5m87xx; |
Geert Uytterhoeven | 5ccb7d7 | 2013-12-12 17:12:25 -0800 | [diff] [blame] | 90 | struct regmap *regmap; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 91 | struct rtc_device *rtc_dev; |
| 92 | int irq; |
| 93 | int device_type; |
| 94 | int rtc_24hr_mode; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 95 | const struct s5m_rtc_reg_config *regs; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 96 | }; |
| 97 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 98 | static const struct regmap_config s5m_rtc_regmap_config = { |
| 99 | .reg_bits = 8, |
| 100 | .val_bits = 8, |
| 101 | |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 102 | .max_register = S5M_RTC_REG_MAX, |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 103 | }; |
| 104 | |
| 105 | static const struct regmap_config s2mps14_rtc_regmap_config = { |
| 106 | .reg_bits = 8, |
| 107 | .val_bits = 8, |
| 108 | |
| 109 | .max_register = S2MPS_RTC_REG_MAX, |
| 110 | }; |
| 111 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 112 | static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, |
| 113 | int rtc_24hr_mode) |
| 114 | { |
| 115 | tm->tm_sec = data[RTC_SEC] & 0x7f; |
| 116 | tm->tm_min = data[RTC_MIN] & 0x7f; |
| 117 | if (rtc_24hr_mode) { |
| 118 | tm->tm_hour = data[RTC_HOUR] & 0x1f; |
| 119 | } else { |
| 120 | tm->tm_hour = data[RTC_HOUR] & 0x0f; |
| 121 | if (data[RTC_HOUR] & HOUR_PM_MASK) |
| 122 | tm->tm_hour += 12; |
| 123 | } |
| 124 | |
| 125 | tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); |
| 126 | tm->tm_mday = data[RTC_DATE] & 0x1f; |
| 127 | tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; |
| 128 | tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; |
| 129 | tm->tm_yday = 0; |
| 130 | tm->tm_isdst = 0; |
| 131 | } |
| 132 | |
| 133 | static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) |
| 134 | { |
| 135 | data[RTC_SEC] = tm->tm_sec; |
| 136 | data[RTC_MIN] = tm->tm_min; |
| 137 | |
| 138 | if (tm->tm_hour >= 12) |
| 139 | data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; |
| 140 | else |
| 141 | data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; |
| 142 | |
| 143 | data[RTC_WEEKDAY] = 1 << tm->tm_wday; |
| 144 | data[RTC_DATE] = tm->tm_mday; |
| 145 | data[RTC_MONTH] = tm->tm_mon + 1; |
| 146 | data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; |
| 147 | |
| 148 | if (tm->tm_year < 100) { |
| 149 | pr_err("s5m8767 RTC cannot handle the year %d.\n", |
| 150 | 1900 + tm->tm_year); |
| 151 | return -EINVAL; |
| 152 | } else { |
| 153 | return 0; |
| 154 | } |
| 155 | } |
| 156 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 157 | /* |
| 158 | * Read RTC_UDR_CON register and wait till UDR field is cleared. |
| 159 | * This indicates that time/alarm update ended. |
| 160 | */ |
| 161 | static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) |
| 162 | { |
| 163 | int ret, retry = UDR_READ_RETRY_CNT; |
| 164 | unsigned int data; |
| 165 | |
| 166 | do { |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 167 | ret = regmap_read(info->regmap, info->regs->rtc_udr_update, |
| 168 | &data); |
| 169 | } while (--retry && (data & info->regs->rtc_udr_mask) && !ret); |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 170 | |
| 171 | if (!retry) |
| 172 | dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); |
| 173 | |
| 174 | return ret; |
| 175 | } |
| 176 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 177 | static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, |
| 178 | struct rtc_wkalrm *alarm) |
| 179 | { |
| 180 | int ret; |
| 181 | unsigned int val; |
| 182 | |
| 183 | switch (info->device_type) { |
| 184 | case S5M8767X: |
| 185 | case S5M8763X: |
| 186 | ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); |
| 187 | val &= S5M_ALARM0_STATUS; |
| 188 | break; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 189 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 190 | case S2MPS13X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 191 | ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, |
| 192 | &val); |
| 193 | val &= S2MPS_ALARM0_STATUS; |
| 194 | break; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 195 | default: |
| 196 | return -EINVAL; |
| 197 | } |
| 198 | if (ret < 0) |
| 199 | return ret; |
| 200 | |
| 201 | if (val) |
| 202 | alarm->pending = 1; |
| 203 | else |
| 204 | alarm->pending = 0; |
| 205 | |
| 206 | return 0; |
| 207 | } |
| 208 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 209 | static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) |
| 210 | { |
| 211 | int ret; |
| 212 | unsigned int data; |
| 213 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 214 | ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 215 | if (ret < 0) { |
| 216 | dev_err(info->dev, "failed to read update reg(%d)\n", ret); |
| 217 | return ret; |
| 218 | } |
| 219 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 220 | data |= info->regs->rtc_udr_mask; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 221 | if (info->device_type == S5M8763X || info->device_type == S5M8767X) |
| 222 | data |= S5M_RTC_TIME_EN_MASK; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 223 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 224 | ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 225 | if (ret < 0) { |
| 226 | dev_err(info->dev, "failed to write update reg(%d)\n", ret); |
| 227 | return ret; |
| 228 | } |
| 229 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 230 | ret = s5m8767_wait_for_udr_update(info); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 231 | |
| 232 | return ret; |
| 233 | } |
| 234 | |
| 235 | static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) |
| 236 | { |
| 237 | int ret; |
| 238 | unsigned int data; |
| 239 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 240 | ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 241 | if (ret < 0) { |
| 242 | dev_err(info->dev, "%s: fail to read update reg(%d)\n", |
| 243 | __func__, ret); |
| 244 | return ret; |
| 245 | } |
| 246 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 247 | data |= info->regs->rtc_udr_mask; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 248 | switch (info->device_type) { |
| 249 | case S5M8763X: |
| 250 | case S5M8767X: |
| 251 | data &= ~S5M_RTC_TIME_EN_MASK; |
| 252 | break; |
| 253 | case S2MPS14X: |
| 254 | data |= S2MPS_RTC_RUDR_MASK; |
| 255 | break; |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 256 | case S2MPS13X: |
| 257 | data |= S2MPS13_RTC_AUDR_MASK; |
| 258 | break; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 259 | default: |
| 260 | return -EINVAL; |
| 261 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 262 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 263 | ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 264 | if (ret < 0) { |
| 265 | dev_err(info->dev, "%s: fail to write update reg(%d)\n", |
| 266 | __func__, ret); |
| 267 | return ret; |
| 268 | } |
| 269 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 270 | ret = s5m8767_wait_for_udr_update(info); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 271 | |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 272 | /* On S2MPS13 the AUDR is not auto-cleared */ |
| 273 | if (info->device_type == S2MPS13X) |
| 274 | regmap_update_bits(info->regmap, info->regs->rtc_udr_update, |
| 275 | S2MPS13_RTC_AUDR_MASK, 0); |
| 276 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 277 | return ret; |
| 278 | } |
| 279 | |
| 280 | static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) |
| 281 | { |
| 282 | tm->tm_sec = bcd2bin(data[RTC_SEC]); |
| 283 | tm->tm_min = bcd2bin(data[RTC_MIN]); |
| 284 | |
| 285 | if (data[RTC_HOUR] & HOUR_12) { |
| 286 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); |
| 287 | if (data[RTC_HOUR] & HOUR_PM) |
| 288 | tm->tm_hour += 12; |
| 289 | } else { |
| 290 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); |
| 291 | } |
| 292 | |
| 293 | tm->tm_wday = data[RTC_WEEKDAY] & 0x07; |
| 294 | tm->tm_mday = bcd2bin(data[RTC_DATE]); |
| 295 | tm->tm_mon = bcd2bin(data[RTC_MONTH]); |
| 296 | tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; |
| 297 | tm->tm_year -= 1900; |
| 298 | } |
| 299 | |
| 300 | static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) |
| 301 | { |
| 302 | data[RTC_SEC] = bin2bcd(tm->tm_sec); |
| 303 | data[RTC_MIN] = bin2bcd(tm->tm_min); |
| 304 | data[RTC_HOUR] = bin2bcd(tm->tm_hour); |
| 305 | data[RTC_WEEKDAY] = tm->tm_wday; |
| 306 | data[RTC_DATE] = bin2bcd(tm->tm_mday); |
| 307 | data[RTC_MONTH] = bin2bcd(tm->tm_mon); |
| 308 | data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); |
| 309 | data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); |
| 310 | } |
| 311 | |
| 312 | static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 313 | { |
| 314 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 315 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 316 | int ret; |
| 317 | |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 318 | if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) { |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 319 | ret = regmap_update_bits(info->regmap, |
| 320 | info->regs->rtc_udr_update, |
| 321 | S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK); |
| 322 | if (ret) { |
| 323 | dev_err(dev, |
| 324 | "Failed to prepare registers for time reading: %d\n", |
| 325 | ret); |
| 326 | return ret; |
| 327 | } |
| 328 | } |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 329 | ret = regmap_bulk_read(info->regmap, info->regs->time, data, |
| 330 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 331 | if (ret < 0) |
| 332 | return ret; |
| 333 | |
| 334 | switch (info->device_type) { |
| 335 | case S5M8763X: |
| 336 | s5m8763_data_to_tm(data, tm); |
| 337 | break; |
| 338 | |
| 339 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 340 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 341 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 342 | s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); |
| 343 | break; |
| 344 | |
| 345 | default: |
| 346 | return -EINVAL; |
| 347 | } |
| 348 | |
| 349 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 350 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, |
| 351 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); |
| 352 | |
| 353 | return rtc_valid_tm(tm); |
| 354 | } |
| 355 | |
| 356 | static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) |
| 357 | { |
| 358 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 359 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 360 | int ret = 0; |
| 361 | |
| 362 | switch (info->device_type) { |
| 363 | case S5M8763X: |
| 364 | s5m8763_tm_to_data(tm, data); |
| 365 | break; |
| 366 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 367 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 368 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 369 | ret = s5m8767_tm_to_data(tm, data); |
| 370 | break; |
| 371 | default: |
| 372 | return -EINVAL; |
| 373 | } |
| 374 | |
| 375 | if (ret < 0) |
| 376 | return ret; |
| 377 | |
| 378 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 379 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, |
| 380 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); |
| 381 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 382 | ret = regmap_raw_write(info->regmap, info->regs->time, data, |
| 383 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 384 | if (ret < 0) |
| 385 | return ret; |
| 386 | |
| 387 | ret = s5m8767_rtc_set_time_reg(info); |
| 388 | |
| 389 | return ret; |
| 390 | } |
| 391 | |
| 392 | static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 393 | { |
| 394 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 395 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 396 | unsigned int val; |
| 397 | int ret, i; |
| 398 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 399 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 400 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 401 | if (ret < 0) |
| 402 | return ret; |
| 403 | |
| 404 | switch (info->device_type) { |
| 405 | case S5M8763X: |
| 406 | s5m8763_data_to_tm(data, &alrm->time); |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 407 | ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 408 | if (ret < 0) |
| 409 | return ret; |
| 410 | |
| 411 | alrm->enabled = !!val; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 412 | break; |
| 413 | |
| 414 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 415 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 416 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 417 | s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 418 | alrm->enabled = 0; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 419 | for (i = 0; i < info->regs->regs_count; i++) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 420 | if (data[i] & ALARM_ENABLE_MASK) { |
| 421 | alrm->enabled = 1; |
| 422 | break; |
| 423 | } |
| 424 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 425 | break; |
| 426 | |
| 427 | default: |
| 428 | return -EINVAL; |
| 429 | } |
| 430 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 431 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 432 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, |
| 433 | alrm->time.tm_mday, alrm->time.tm_hour, |
| 434 | alrm->time.tm_min, alrm->time.tm_sec, |
| 435 | alrm->time.tm_wday); |
| 436 | |
| 437 | ret = s5m_check_peding_alarm_interrupt(info, alrm); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 438 | |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) |
| 443 | { |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 444 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 445 | int ret, i; |
| 446 | struct rtc_time tm; |
| 447 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 448 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 449 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 450 | if (ret < 0) |
| 451 | return ret; |
| 452 | |
| 453 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); |
| 454 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 455 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, |
| 456 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); |
| 457 | |
| 458 | switch (info->device_type) { |
| 459 | case S5M8763X: |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 460 | ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 461 | break; |
| 462 | |
| 463 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 464 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 465 | case S2MPS13X: |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 466 | for (i = 0; i < info->regs->regs_count; i++) |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 467 | data[i] &= ~ALARM_ENABLE_MASK; |
| 468 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 469 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 470 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 471 | if (ret < 0) |
| 472 | return ret; |
| 473 | |
| 474 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 475 | |
| 476 | break; |
| 477 | |
| 478 | default: |
| 479 | return -EINVAL; |
| 480 | } |
| 481 | |
| 482 | return ret; |
| 483 | } |
| 484 | |
| 485 | static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) |
| 486 | { |
| 487 | int ret; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 488 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 489 | u8 alarm0_conf; |
| 490 | struct rtc_time tm; |
| 491 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 492 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 493 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 494 | if (ret < 0) |
| 495 | return ret; |
| 496 | |
| 497 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); |
| 498 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 499 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, |
| 500 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); |
| 501 | |
| 502 | switch (info->device_type) { |
| 503 | case S5M8763X: |
| 504 | alarm0_conf = 0x77; |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 505 | ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 506 | break; |
| 507 | |
| 508 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 509 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 510 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 511 | data[RTC_SEC] |= ALARM_ENABLE_MASK; |
| 512 | data[RTC_MIN] |= ALARM_ENABLE_MASK; |
| 513 | data[RTC_HOUR] |= ALARM_ENABLE_MASK; |
| 514 | data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; |
| 515 | if (data[RTC_DATE] & 0x1f) |
| 516 | data[RTC_DATE] |= ALARM_ENABLE_MASK; |
| 517 | if (data[RTC_MONTH] & 0xf) |
| 518 | data[RTC_MONTH] |= ALARM_ENABLE_MASK; |
| 519 | if (data[RTC_YEAR1] & 0x7f) |
| 520 | data[RTC_YEAR1] |= ALARM_ENABLE_MASK; |
| 521 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 522 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 523 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 524 | if (ret < 0) |
| 525 | return ret; |
| 526 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 527 | |
| 528 | break; |
| 529 | |
| 530 | default: |
| 531 | return -EINVAL; |
| 532 | } |
| 533 | |
| 534 | return ret; |
| 535 | } |
| 536 | |
| 537 | static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 538 | { |
| 539 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 540 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 541 | int ret; |
| 542 | |
| 543 | switch (info->device_type) { |
| 544 | case S5M8763X: |
| 545 | s5m8763_tm_to_data(&alrm->time, data); |
| 546 | break; |
| 547 | |
| 548 | case S5M8767X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 549 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 550 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 551 | s5m8767_tm_to_data(&alrm->time, data); |
| 552 | break; |
| 553 | |
| 554 | default: |
| 555 | return -EINVAL; |
| 556 | } |
| 557 | |
| 558 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 559 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, |
| 560 | alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, |
| 561 | alrm->time.tm_sec, alrm->time.tm_wday); |
| 562 | |
| 563 | ret = s5m_rtc_stop_alarm(info); |
| 564 | if (ret < 0) |
| 565 | return ret; |
| 566 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 567 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 568 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 569 | if (ret < 0) |
| 570 | return ret; |
| 571 | |
| 572 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 573 | if (ret < 0) |
| 574 | return ret; |
| 575 | |
| 576 | if (alrm->enabled) |
| 577 | ret = s5m_rtc_start_alarm(info); |
| 578 | |
| 579 | return ret; |
| 580 | } |
| 581 | |
| 582 | static int s5m_rtc_alarm_irq_enable(struct device *dev, |
| 583 | unsigned int enabled) |
| 584 | { |
| 585 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 586 | |
| 587 | if (enabled) |
| 588 | return s5m_rtc_start_alarm(info); |
| 589 | else |
| 590 | return s5m_rtc_stop_alarm(info); |
| 591 | } |
| 592 | |
| 593 | static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) |
| 594 | { |
| 595 | struct s5m_rtc_info *info = data; |
| 596 | |
| 597 | rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); |
| 598 | |
| 599 | return IRQ_HANDLED; |
| 600 | } |
| 601 | |
| 602 | static const struct rtc_class_ops s5m_rtc_ops = { |
| 603 | .read_time = s5m_rtc_read_time, |
| 604 | .set_time = s5m_rtc_set_time, |
| 605 | .read_alarm = s5m_rtc_read_alarm, |
| 606 | .set_alarm = s5m_rtc_set_alarm, |
| 607 | .alarm_irq_enable = s5m_rtc_alarm_irq_enable, |
| 608 | }; |
| 609 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 610 | static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) |
| 611 | { |
| 612 | u8 data[2]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 613 | int ret; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 614 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 615 | switch (info->device_type) { |
| 616 | case S5M8763X: |
| 617 | case S5M8767X: |
| 618 | /* UDR update time. Default of 7.32 ms is too long. */ |
| 619 | ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, |
| 620 | S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); |
| 621 | if (ret < 0) |
| 622 | dev_err(info->dev, "%s: fail to change UDR time: %d\n", |
| 623 | __func__, ret); |
Krzysztof Kozlowski | 0c5f5d9 | 2014-06-10 15:18:43 -0700 | [diff] [blame] | 624 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 625 | /* Set RTC control register : Binary mode, 24hour mode */ |
| 626 | data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 627 | data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 628 | |
| 629 | ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); |
| 630 | break; |
| 631 | |
| 632 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 633 | case S2MPS13X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 634 | data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 635 | ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); |
| 636 | break; |
| 637 | |
| 638 | default: |
| 639 | return -EINVAL; |
| 640 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 641 | |
| 642 | info->rtc_24hr_mode = 1; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 643 | if (ret < 0) { |
| 644 | dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", |
| 645 | __func__, ret); |
| 646 | return ret; |
| 647 | } |
| 648 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 649 | return ret; |
| 650 | } |
| 651 | |
| 652 | static int s5m_rtc_probe(struct platform_device *pdev) |
| 653 | { |
| 654 | struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); |
| 655 | struct sec_platform_data *pdata = s5m87xx->pdata; |
| 656 | struct s5m_rtc_info *info; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 657 | const struct regmap_config *regmap_cfg; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 658 | int ret, alarm_irq; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 659 | |
| 660 | if (!pdata) { |
| 661 | dev_err(pdev->dev.parent, "Platform data not supplied\n"); |
| 662 | return -ENODEV; |
| 663 | } |
| 664 | |
| 665 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
| 666 | if (!info) |
| 667 | return -ENOMEM; |
| 668 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 669 | switch (pdata->device_type) { |
| 670 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 671 | case S2MPS13X: |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 672 | regmap_cfg = &s2mps14_rtc_regmap_config; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 673 | info->regs = &s2mps_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 674 | alarm_irq = S2MPS14_IRQ_RTCA0; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 675 | break; |
| 676 | case S5M8763X: |
| 677 | regmap_cfg = &s5m_rtc_regmap_config; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 678 | info->regs = &s5m_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 679 | alarm_irq = S5M8763_IRQ_ALARM0; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 680 | break; |
| 681 | case S5M8767X: |
| 682 | regmap_cfg = &s5m_rtc_regmap_config; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 683 | info->regs = &s5m_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 684 | alarm_irq = S5M8767_IRQ_RTCA1; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 685 | break; |
| 686 | default: |
| 687 | dev_err(&pdev->dev, "Device type is not supported by RTC driver\n"); |
| 688 | return -ENODEV; |
| 689 | } |
| 690 | |
| 691 | info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); |
| 692 | if (!info->i2c) { |
| 693 | dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); |
| 694 | return -ENODEV; |
| 695 | } |
| 696 | |
| 697 | info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); |
| 698 | if (IS_ERR(info->regmap)) { |
| 699 | ret = PTR_ERR(info->regmap); |
| 700 | dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", |
| 701 | ret); |
| 702 | goto err; |
| 703 | } |
| 704 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 705 | info->dev = &pdev->dev; |
| 706 | info->s5m87xx = s5m87xx; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 707 | info->device_type = s5m87xx->device_type; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 708 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 709 | if (s5m87xx->irq_data) { |
| 710 | info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); |
| 711 | if (info->irq <= 0) { |
| 712 | ret = -EINVAL; |
| 713 | dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 714 | alarm_irq); |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 715 | goto err; |
| 716 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | platform_set_drvdata(pdev, info); |
| 720 | |
| 721 | ret = s5m8767_rtc_init_reg(info); |
| 722 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 723 | device_init_wakeup(&pdev->dev, 1); |
| 724 | |
| 725 | info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", |
| 726 | &s5m_rtc_ops, THIS_MODULE); |
| 727 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 728 | if (IS_ERR(info->rtc_dev)) { |
| 729 | ret = PTR_ERR(info->rtc_dev); |
| 730 | goto err; |
| 731 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 732 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 733 | if (!info->irq) { |
| 734 | dev_info(&pdev->dev, "Alarm IRQ not available\n"); |
| 735 | return 0; |
| 736 | } |
| 737 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 738 | ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, |
| 739 | s5m_rtc_alarm_irq, 0, "rtc-alarm0", |
| 740 | info); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 741 | if (ret < 0) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 742 | dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", |
| 743 | info->irq, ret); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 744 | goto err; |
| 745 | } |
| 746 | |
| 747 | return 0; |
| 748 | |
| 749 | err: |
| 750 | i2c_unregister_device(info->i2c); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 751 | |
| 752 | return ret; |
| 753 | } |
| 754 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 755 | static int s5m_rtc_remove(struct platform_device *pdev) |
| 756 | { |
| 757 | struct s5m_rtc_info *info = platform_get_drvdata(pdev); |
| 758 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 759 | i2c_unregister_device(info->i2c); |
| 760 | |
| 761 | return 0; |
| 762 | } |
| 763 | |
Geert Uytterhoeven | 11ba5a1 | 2014-01-23 15:55:19 -0800 | [diff] [blame] | 764 | #ifdef CONFIG_PM_SLEEP |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 765 | static int s5m_rtc_resume(struct device *dev) |
| 766 | { |
| 767 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 768 | int ret = 0; |
| 769 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 770 | if (info->irq && device_may_wakeup(dev)) |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 771 | ret = disable_irq_wake(info->irq); |
| 772 | |
| 773 | return ret; |
| 774 | } |
| 775 | |
| 776 | static int s5m_rtc_suspend(struct device *dev) |
| 777 | { |
| 778 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 779 | int ret = 0; |
| 780 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 781 | if (info->irq && device_may_wakeup(dev)) |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 782 | ret = enable_irq_wake(info->irq); |
| 783 | |
| 784 | return ret; |
| 785 | } |
Geert Uytterhoeven | 11ba5a1 | 2014-01-23 15:55:19 -0800 | [diff] [blame] | 786 | #endif /* CONFIG_PM_SLEEP */ |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 787 | |
| 788 | static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); |
| 789 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 790 | static const struct platform_device_id s5m_rtc_id[] = { |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 791 | { "s5m-rtc", S5M8767X }, |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame^] | 792 | { "s2mps13-rtc", S2MPS13X }, |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 793 | { "s2mps14-rtc", S2MPS14X }, |
Andrey Ryabinin | 45cd15e | 2015-01-26 12:58:46 -0800 | [diff] [blame] | 794 | { }, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 795 | }; |
| 796 | |
| 797 | static struct platform_driver s5m_rtc_driver = { |
| 798 | .driver = { |
| 799 | .name = "s5m-rtc", |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 800 | .pm = &s5m_rtc_pm_ops, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 801 | }, |
| 802 | .probe = s5m_rtc_probe, |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 803 | .remove = s5m_rtc_remove, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 804 | .id_table = s5m_rtc_id, |
| 805 | }; |
| 806 | |
| 807 | module_platform_driver(s5m_rtc_driver); |
| 808 | |
| 809 | /* Module information */ |
| 810 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 811 | MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 812 | MODULE_LICENSE("GPL"); |
| 813 | MODULE_ALIAS("platform:s5m-rtc"); |