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 | |
Joe Perches | a737e83 | 2015-04-16 12:46:14 -0700 | [diff] [blame] | 18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 19 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 20 | #include <linux/module.h> |
| 21 | #include <linux/i2c.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 22 | #include <linux/bcd.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 23 | #include <linux/regmap.h> |
| 24 | #include <linux/rtc.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/mfd/samsung/core.h> |
| 27 | #include <linux/mfd/samsung/irq.h> |
| 28 | #include <linux/mfd/samsung/rtc.h> |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 29 | #include <linux/mfd/samsung/s2mps14.h> |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 30 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 31 | /* |
| 32 | * Maximum number of retries for checking changes in UDR field |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 33 | * of S5M_RTC_UDR_CON register (to limit possible endless loop). |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 34 | * |
| 35 | * 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] | 36 | * 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] | 37 | * been transferred. |
| 38 | */ |
| 39 | #define UDR_READ_RETRY_CNT 5 |
| 40 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 41 | /* Registers used by the driver which are different between chipsets. */ |
| 42 | struct s5m_rtc_reg_config { |
| 43 | /* Number of registers used for setting time/alarm0/alarm1 */ |
| 44 | unsigned int regs_count; |
| 45 | /* First register for time, seconds */ |
| 46 | unsigned int time; |
| 47 | /* RTC control register */ |
| 48 | unsigned int ctrl; |
| 49 | /* First register for alarm 0, seconds */ |
| 50 | unsigned int alarm0; |
| 51 | /* First register for alarm 1, seconds */ |
| 52 | unsigned int alarm1; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 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 | */ |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 58 | unsigned int udr_update; |
| 59 | /* Mask for UDR field in 'udr_update' register */ |
| 60 | unsigned int udr_mask; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 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, |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 70 | .udr_update = S5M_RTC_UDR_CON, |
| 71 | .udr_mask = S5M_RTC_UDR_MASK, |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 72 | }; |
| 73 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 74 | /* |
| 75 | * Register map for S2MPS14. |
| 76 | * It may be also suitable for S2MPS11 but this was not tested. |
| 77 | */ |
| 78 | static const struct s5m_rtc_reg_config s2mps_rtc_regs = { |
| 79 | .regs_count = 7, |
| 80 | .time = S2MPS_RTC_SEC, |
| 81 | .ctrl = S2MPS_RTC_CTRL, |
| 82 | .alarm0 = S2MPS_ALARM0_SEC, |
| 83 | .alarm1 = S2MPS_ALARM1_SEC, |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 84 | .udr_update = S2MPS_RTC_UDR_CON, |
| 85 | .udr_mask = S2MPS_RTC_WUDR_MASK, |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 88 | struct s5m_rtc_info { |
| 89 | struct device *dev; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 90 | struct i2c_client *i2c; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 91 | struct sec_pmic_dev *s5m87xx; |
Geert Uytterhoeven | 5ccb7d7 | 2013-12-12 17:12:25 -0800 | [diff] [blame] | 92 | struct regmap *regmap; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 93 | struct rtc_device *rtc_dev; |
| 94 | int irq; |
Krzysztof Kozlowski | 94f9192 | 2015-04-16 12:49:27 -0700 | [diff] [blame] | 95 | enum sec_device_type device_type; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 96 | int rtc_24hr_mode; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 97 | const struct s5m_rtc_reg_config *regs; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 98 | }; |
| 99 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 100 | static const struct regmap_config s5m_rtc_regmap_config = { |
| 101 | .reg_bits = 8, |
| 102 | .val_bits = 8, |
| 103 | |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 104 | .max_register = S5M_RTC_REG_MAX, |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 105 | }; |
| 106 | |
| 107 | static const struct regmap_config s2mps14_rtc_regmap_config = { |
| 108 | .reg_bits = 8, |
| 109 | .val_bits = 8, |
| 110 | |
| 111 | .max_register = S2MPS_RTC_REG_MAX, |
| 112 | }; |
| 113 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 114 | static void s5m8767_data_to_tm(u8 *data, struct rtc_time *tm, |
| 115 | int rtc_24hr_mode) |
| 116 | { |
| 117 | tm->tm_sec = data[RTC_SEC] & 0x7f; |
| 118 | tm->tm_min = data[RTC_MIN] & 0x7f; |
| 119 | if (rtc_24hr_mode) { |
| 120 | tm->tm_hour = data[RTC_HOUR] & 0x1f; |
| 121 | } else { |
| 122 | tm->tm_hour = data[RTC_HOUR] & 0x0f; |
| 123 | if (data[RTC_HOUR] & HOUR_PM_MASK) |
| 124 | tm->tm_hour += 12; |
| 125 | } |
| 126 | |
| 127 | tm->tm_wday = ffs(data[RTC_WEEKDAY] & 0x7f); |
| 128 | tm->tm_mday = data[RTC_DATE] & 0x1f; |
| 129 | tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1; |
| 130 | tm->tm_year = (data[RTC_YEAR1] & 0x7f) + 100; |
| 131 | tm->tm_yday = 0; |
| 132 | tm->tm_isdst = 0; |
| 133 | } |
| 134 | |
| 135 | static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) |
| 136 | { |
| 137 | data[RTC_SEC] = tm->tm_sec; |
| 138 | data[RTC_MIN] = tm->tm_min; |
| 139 | |
| 140 | if (tm->tm_hour >= 12) |
| 141 | data[RTC_HOUR] = tm->tm_hour | HOUR_PM_MASK; |
| 142 | else |
| 143 | data[RTC_HOUR] = tm->tm_hour & ~HOUR_PM_MASK; |
| 144 | |
| 145 | data[RTC_WEEKDAY] = 1 << tm->tm_wday; |
| 146 | data[RTC_DATE] = tm->tm_mday; |
| 147 | data[RTC_MONTH] = tm->tm_mon + 1; |
| 148 | data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0; |
| 149 | |
| 150 | if (tm->tm_year < 100) { |
Joe Perches | a737e83 | 2015-04-16 12:46:14 -0700 | [diff] [blame] | 151 | pr_err("RTC cannot handle the year %d\n", |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 152 | 1900 + tm->tm_year); |
| 153 | return -EINVAL; |
| 154 | } else { |
| 155 | return 0; |
| 156 | } |
| 157 | } |
| 158 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 159 | /* |
| 160 | * Read RTC_UDR_CON register and wait till UDR field is cleared. |
| 161 | * This indicates that time/alarm update ended. |
| 162 | */ |
| 163 | static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info) |
| 164 | { |
| 165 | int ret, retry = UDR_READ_RETRY_CNT; |
| 166 | unsigned int data; |
| 167 | |
| 168 | do { |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 169 | ret = regmap_read(info->regmap, info->regs->udr_update, &data); |
| 170 | } while (--retry && (data & info->regs->udr_mask) && !ret); |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 171 | |
| 172 | if (!retry) |
| 173 | dev_err(info->dev, "waiting for UDR update, reached max number of retries\n"); |
| 174 | |
| 175 | return ret; |
| 176 | } |
| 177 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 178 | static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info, |
| 179 | struct rtc_wkalrm *alarm) |
| 180 | { |
| 181 | int ret; |
| 182 | unsigned int val; |
| 183 | |
| 184 | switch (info->device_type) { |
| 185 | case S5M8767X: |
| 186 | case S5M8763X: |
| 187 | ret = regmap_read(info->regmap, S5M_RTC_STATUS, &val); |
| 188 | val &= S5M_ALARM0_STATUS; |
| 189 | break; |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 190 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 191 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 192 | case S2MPS13X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 193 | ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2, |
| 194 | &val); |
| 195 | val &= S2MPS_ALARM0_STATUS; |
| 196 | break; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 197 | default: |
| 198 | return -EINVAL; |
| 199 | } |
| 200 | if (ret < 0) |
| 201 | return ret; |
| 202 | |
| 203 | if (val) |
| 204 | alarm->pending = 1; |
| 205 | else |
| 206 | alarm->pending = 0; |
| 207 | |
| 208 | return 0; |
| 209 | } |
| 210 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 211 | static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) |
| 212 | { |
| 213 | int ret; |
| 214 | unsigned int data; |
| 215 | |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 216 | ret = regmap_read(info->regmap, info->regs->udr_update, &data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 217 | if (ret < 0) { |
| 218 | dev_err(info->dev, "failed to read update reg(%d)\n", ret); |
| 219 | return ret; |
| 220 | } |
| 221 | |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 222 | switch (info->device_type) { |
| 223 | case S5M8763X: |
| 224 | case S5M8767X: |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 225 | data |= info->regs->udr_mask | S5M_RTC_TIME_EN_MASK; |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 226 | case S2MPS15X: |
| 227 | /* As per UM, for write time register, set WUDR bit to high */ |
| 228 | data |= S2MPS15_RTC_WUDR_MASK; |
| 229 | break; |
| 230 | case S2MPS14X: |
| 231 | case S2MPS13X: |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 232 | data |= info->regs->udr_mask; |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 233 | break; |
| 234 | default: |
| 235 | return -EINVAL; |
| 236 | } |
| 237 | |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 238 | ret = regmap_write(info->regmap, info->regs->udr_update, data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 239 | if (ret < 0) { |
| 240 | dev_err(info->dev, "failed to write update reg(%d)\n", ret); |
| 241 | return ret; |
| 242 | } |
| 243 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 244 | ret = s5m8767_wait_for_udr_update(info); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 245 | |
| 246 | return ret; |
| 247 | } |
| 248 | |
| 249 | static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) |
| 250 | { |
| 251 | int ret; |
| 252 | unsigned int data; |
| 253 | |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 254 | ret = regmap_read(info->regmap, info->regs->udr_update, &data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 255 | if (ret < 0) { |
| 256 | dev_err(info->dev, "%s: fail to read update reg(%d)\n", |
| 257 | __func__, ret); |
| 258 | return ret; |
| 259 | } |
| 260 | |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 261 | data |= info->regs->udr_mask; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 262 | switch (info->device_type) { |
| 263 | case S5M8763X: |
| 264 | case S5M8767X: |
| 265 | data &= ~S5M_RTC_TIME_EN_MASK; |
| 266 | break; |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 267 | case S2MPS15X: |
| 268 | /* As per UM, for write alarm, set A_UDR(bit[4]) to high |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 269 | * udr_mask above sets bit[4] |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 270 | */ |
| 271 | break; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 272 | case S2MPS14X: |
| 273 | data |= S2MPS_RTC_RUDR_MASK; |
| 274 | break; |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 275 | case S2MPS13X: |
| 276 | data |= S2MPS13_RTC_AUDR_MASK; |
| 277 | break; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 278 | default: |
| 279 | return -EINVAL; |
| 280 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 281 | |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 282 | ret = regmap_write(info->regmap, info->regs->udr_update, data); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 283 | if (ret < 0) { |
| 284 | dev_err(info->dev, "%s: fail to write update reg(%d)\n", |
| 285 | __func__, ret); |
| 286 | return ret; |
| 287 | } |
| 288 | |
Krzysztof Kozlowski | d73238d | 2013-12-12 17:12:28 -0800 | [diff] [blame] | 289 | ret = s5m8767_wait_for_udr_update(info); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 290 | |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 291 | /* On S2MPS13 the AUDR is not auto-cleared */ |
| 292 | if (info->device_type == S2MPS13X) |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 293 | regmap_update_bits(info->regmap, info->regs->udr_update, |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 294 | S2MPS13_RTC_AUDR_MASK, 0); |
| 295 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 296 | return ret; |
| 297 | } |
| 298 | |
| 299 | static void s5m8763_data_to_tm(u8 *data, struct rtc_time *tm) |
| 300 | { |
| 301 | tm->tm_sec = bcd2bin(data[RTC_SEC]); |
| 302 | tm->tm_min = bcd2bin(data[RTC_MIN]); |
| 303 | |
| 304 | if (data[RTC_HOUR] & HOUR_12) { |
| 305 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x1f); |
| 306 | if (data[RTC_HOUR] & HOUR_PM) |
| 307 | tm->tm_hour += 12; |
| 308 | } else { |
| 309 | tm->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3f); |
| 310 | } |
| 311 | |
| 312 | tm->tm_wday = data[RTC_WEEKDAY] & 0x07; |
| 313 | tm->tm_mday = bcd2bin(data[RTC_DATE]); |
| 314 | tm->tm_mon = bcd2bin(data[RTC_MONTH]); |
| 315 | tm->tm_year = bcd2bin(data[RTC_YEAR1]) + bcd2bin(data[RTC_YEAR2]) * 100; |
| 316 | tm->tm_year -= 1900; |
| 317 | } |
| 318 | |
| 319 | static void s5m8763_tm_to_data(struct rtc_time *tm, u8 *data) |
| 320 | { |
| 321 | data[RTC_SEC] = bin2bcd(tm->tm_sec); |
| 322 | data[RTC_MIN] = bin2bcd(tm->tm_min); |
| 323 | data[RTC_HOUR] = bin2bcd(tm->tm_hour); |
| 324 | data[RTC_WEEKDAY] = tm->tm_wday; |
| 325 | data[RTC_DATE] = bin2bcd(tm->tm_mday); |
| 326 | data[RTC_MONTH] = bin2bcd(tm->tm_mon); |
| 327 | data[RTC_YEAR1] = bin2bcd(tm->tm_year % 100); |
| 328 | data[RTC_YEAR2] = bin2bcd((tm->tm_year + 1900) / 100); |
| 329 | } |
| 330 | |
| 331 | static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 332 | { |
| 333 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 334 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 335 | int ret; |
| 336 | |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 337 | if (info->device_type == S2MPS15X || info->device_type == S2MPS14X || |
| 338 | info->device_type == S2MPS13X) { |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 339 | ret = regmap_update_bits(info->regmap, |
Krzysztof Kozlowski | a83a793 | 2015-12-30 13:47:25 +0900 | [diff] [blame^] | 340 | info->regs->udr_update, |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 341 | S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK); |
| 342 | if (ret) { |
| 343 | dev_err(dev, |
| 344 | "Failed to prepare registers for time reading: %d\n", |
| 345 | ret); |
| 346 | return ret; |
| 347 | } |
| 348 | } |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 349 | ret = regmap_bulk_read(info->regmap, info->regs->time, data, |
| 350 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 351 | if (ret < 0) |
| 352 | return ret; |
| 353 | |
| 354 | switch (info->device_type) { |
| 355 | case S5M8763X: |
| 356 | s5m8763_data_to_tm(data, tm); |
| 357 | break; |
| 358 | |
| 359 | case S5M8767X: |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 360 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 361 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 362 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 363 | s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode); |
| 364 | break; |
| 365 | |
| 366 | default: |
| 367 | return -EINVAL; |
| 368 | } |
| 369 | |
| 370 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 371 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, |
| 372 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); |
| 373 | |
| 374 | return rtc_valid_tm(tm); |
| 375 | } |
| 376 | |
| 377 | static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) |
| 378 | { |
| 379 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 380 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 381 | int ret = 0; |
| 382 | |
| 383 | switch (info->device_type) { |
| 384 | case S5M8763X: |
| 385 | s5m8763_tm_to_data(tm, data); |
| 386 | break; |
| 387 | case S5M8767X: |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 388 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 389 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 390 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 391 | ret = s5m8767_tm_to_data(tm, data); |
| 392 | break; |
| 393 | default: |
| 394 | return -EINVAL; |
| 395 | } |
| 396 | |
| 397 | if (ret < 0) |
| 398 | return ret; |
| 399 | |
| 400 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 401 | 1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, |
| 402 | tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday); |
| 403 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 404 | ret = regmap_raw_write(info->regmap, info->regs->time, data, |
| 405 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 406 | if (ret < 0) |
| 407 | return ret; |
| 408 | |
| 409 | ret = s5m8767_rtc_set_time_reg(info); |
| 410 | |
| 411 | return ret; |
| 412 | } |
| 413 | |
| 414 | static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 415 | { |
| 416 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 417 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 418 | unsigned int val; |
| 419 | int ret, i; |
| 420 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 421 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 422 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 423 | if (ret < 0) |
| 424 | return ret; |
| 425 | |
| 426 | switch (info->device_type) { |
| 427 | case S5M8763X: |
| 428 | s5m8763_data_to_tm(data, &alrm->time); |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 429 | ret = regmap_read(info->regmap, S5M_ALARM0_CONF, &val); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 430 | if (ret < 0) |
| 431 | return ret; |
| 432 | |
| 433 | alrm->enabled = !!val; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 434 | break; |
| 435 | |
| 436 | case S5M8767X: |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 437 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 438 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 439 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 440 | s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 441 | alrm->enabled = 0; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 442 | for (i = 0; i < info->regs->regs_count; i++) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 443 | if (data[i] & ALARM_ENABLE_MASK) { |
| 444 | alrm->enabled = 1; |
| 445 | break; |
| 446 | } |
| 447 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 448 | break; |
| 449 | |
| 450 | default: |
| 451 | return -EINVAL; |
| 452 | } |
| 453 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 454 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 455 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, |
| 456 | alrm->time.tm_mday, alrm->time.tm_hour, |
| 457 | alrm->time.tm_min, alrm->time.tm_sec, |
| 458 | alrm->time.tm_wday); |
| 459 | |
| 460 | ret = s5m_check_peding_alarm_interrupt(info, alrm); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) |
| 466 | { |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 467 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 468 | int ret, i; |
| 469 | struct rtc_time tm; |
| 470 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 471 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 472 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 473 | if (ret < 0) |
| 474 | return ret; |
| 475 | |
| 476 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); |
| 477 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 478 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, |
| 479 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); |
| 480 | |
| 481 | switch (info->device_type) { |
| 482 | case S5M8763X: |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 483 | ret = regmap_write(info->regmap, S5M_ALARM0_CONF, 0); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 484 | break; |
| 485 | |
| 486 | case S5M8767X: |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 487 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 488 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 489 | case S2MPS13X: |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 490 | for (i = 0; i < info->regs->regs_count; i++) |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 491 | data[i] &= ~ALARM_ENABLE_MASK; |
| 492 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 493 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 494 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 495 | if (ret < 0) |
| 496 | return ret; |
| 497 | |
| 498 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 499 | |
| 500 | break; |
| 501 | |
| 502 | default: |
| 503 | return -EINVAL; |
| 504 | } |
| 505 | |
| 506 | return ret; |
| 507 | } |
| 508 | |
| 509 | static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) |
| 510 | { |
| 511 | int ret; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 512 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 513 | u8 alarm0_conf; |
| 514 | struct rtc_time tm; |
| 515 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 516 | ret = regmap_bulk_read(info->regmap, info->regs->alarm0, data, |
| 517 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 518 | if (ret < 0) |
| 519 | return ret; |
| 520 | |
| 521 | s5m8767_data_to_tm(data, &tm, info->rtc_24hr_mode); |
| 522 | dev_dbg(info->dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 523 | 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, |
| 524 | tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_wday); |
| 525 | |
| 526 | switch (info->device_type) { |
| 527 | case S5M8763X: |
| 528 | alarm0_conf = 0x77; |
Krzysztof Kozlowski | 602cb5b | 2014-06-10 15:18:40 -0700 | [diff] [blame] | 529 | ret = regmap_write(info->regmap, S5M_ALARM0_CONF, alarm0_conf); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 530 | break; |
| 531 | |
| 532 | case S5M8767X: |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 533 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 534 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 535 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 536 | data[RTC_SEC] |= ALARM_ENABLE_MASK; |
| 537 | data[RTC_MIN] |= ALARM_ENABLE_MASK; |
| 538 | data[RTC_HOUR] |= ALARM_ENABLE_MASK; |
| 539 | data[RTC_WEEKDAY] &= ~ALARM_ENABLE_MASK; |
| 540 | if (data[RTC_DATE] & 0x1f) |
| 541 | data[RTC_DATE] |= ALARM_ENABLE_MASK; |
| 542 | if (data[RTC_MONTH] & 0xf) |
| 543 | data[RTC_MONTH] |= ALARM_ENABLE_MASK; |
| 544 | if (data[RTC_YEAR1] & 0x7f) |
| 545 | data[RTC_YEAR1] |= ALARM_ENABLE_MASK; |
| 546 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 547 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 548 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 549 | if (ret < 0) |
| 550 | return ret; |
| 551 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 552 | |
| 553 | break; |
| 554 | |
| 555 | default: |
| 556 | return -EINVAL; |
| 557 | } |
| 558 | |
| 559 | return ret; |
| 560 | } |
| 561 | |
| 562 | static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 563 | { |
| 564 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 565 | u8 data[info->regs->regs_count]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 566 | int ret; |
| 567 | |
| 568 | switch (info->device_type) { |
| 569 | case S5M8763X: |
| 570 | s5m8763_tm_to_data(&alrm->time, data); |
| 571 | break; |
| 572 | |
| 573 | case S5M8767X: |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 574 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 575 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 576 | case S2MPS13X: |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 577 | s5m8767_tm_to_data(&alrm->time, data); |
| 578 | break; |
| 579 | |
| 580 | default: |
| 581 | return -EINVAL; |
| 582 | } |
| 583 | |
| 584 | dev_dbg(dev, "%s: %d/%d/%d %d:%d:%d(%d)\n", __func__, |
| 585 | 1900 + alrm->time.tm_year, 1 + alrm->time.tm_mon, |
| 586 | alrm->time.tm_mday, alrm->time.tm_hour, alrm->time.tm_min, |
| 587 | alrm->time.tm_sec, alrm->time.tm_wday); |
| 588 | |
| 589 | ret = s5m_rtc_stop_alarm(info); |
| 590 | if (ret < 0) |
| 591 | return ret; |
| 592 | |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 593 | ret = regmap_raw_write(info->regmap, info->regs->alarm0, data, |
| 594 | info->regs->regs_count); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 595 | if (ret < 0) |
| 596 | return ret; |
| 597 | |
| 598 | ret = s5m8767_rtc_set_alarm_reg(info); |
| 599 | if (ret < 0) |
| 600 | return ret; |
| 601 | |
| 602 | if (alrm->enabled) |
| 603 | ret = s5m_rtc_start_alarm(info); |
| 604 | |
| 605 | return ret; |
| 606 | } |
| 607 | |
| 608 | static int s5m_rtc_alarm_irq_enable(struct device *dev, |
| 609 | unsigned int enabled) |
| 610 | { |
| 611 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 612 | |
| 613 | if (enabled) |
| 614 | return s5m_rtc_start_alarm(info); |
| 615 | else |
| 616 | return s5m_rtc_stop_alarm(info); |
| 617 | } |
| 618 | |
| 619 | static irqreturn_t s5m_rtc_alarm_irq(int irq, void *data) |
| 620 | { |
| 621 | struct s5m_rtc_info *info = data; |
| 622 | |
| 623 | rtc_update_irq(info->rtc_dev, 1, RTC_IRQF | RTC_AF); |
| 624 | |
| 625 | return IRQ_HANDLED; |
| 626 | } |
| 627 | |
| 628 | static const struct rtc_class_ops s5m_rtc_ops = { |
| 629 | .read_time = s5m_rtc_read_time, |
| 630 | .set_time = s5m_rtc_set_time, |
| 631 | .read_alarm = s5m_rtc_read_alarm, |
| 632 | .set_alarm = s5m_rtc_set_alarm, |
| 633 | .alarm_irq_enable = s5m_rtc_alarm_irq_enable, |
| 634 | }; |
| 635 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 636 | static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) |
| 637 | { |
| 638 | u8 data[2]; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 639 | int ret; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 640 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 641 | switch (info->device_type) { |
| 642 | case S5M8763X: |
| 643 | case S5M8767X: |
| 644 | /* UDR update time. Default of 7.32 ms is too long. */ |
| 645 | ret = regmap_update_bits(info->regmap, S5M_RTC_UDR_CON, |
| 646 | S5M_RTC_UDR_T_MASK, S5M_RTC_UDR_T_450_US); |
| 647 | if (ret < 0) |
| 648 | dev_err(info->dev, "%s: fail to change UDR time: %d\n", |
| 649 | __func__, ret); |
Krzysztof Kozlowski | 0c5f5d9 | 2014-06-10 15:18:43 -0700 | [diff] [blame] | 650 | |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 651 | /* Set RTC control register : Binary mode, 24hour mode */ |
| 652 | data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 653 | data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 654 | |
| 655 | ret = regmap_raw_write(info->regmap, S5M_ALARM0_CONF, data, 2); |
| 656 | break; |
| 657 | |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 658 | case S2MPS15X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 659 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 660 | case S2MPS13X: |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 661 | data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT); |
| 662 | ret = regmap_write(info->regmap, info->regs->ctrl, data[0]); |
Joonyoung Shim | ff02c04 | 2015-08-21 18:43:41 +0900 | [diff] [blame] | 663 | if (ret < 0) |
| 664 | break; |
| 665 | |
| 666 | /* |
| 667 | * Should set WUDR & (RUDR or AUDR) bits to high after writing |
| 668 | * RTC_CTRL register like writing Alarm registers. We can't find |
| 669 | * the description from datasheet but vendor code does that |
| 670 | * really. |
| 671 | */ |
| 672 | ret = s5m8767_rtc_set_alarm_reg(info); |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 673 | break; |
| 674 | |
| 675 | default: |
| 676 | return -EINVAL; |
| 677 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 678 | |
| 679 | info->rtc_24hr_mode = 1; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 680 | if (ret < 0) { |
| 681 | dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", |
| 682 | __func__, ret); |
| 683 | return ret; |
| 684 | } |
| 685 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 686 | return ret; |
| 687 | } |
| 688 | |
| 689 | static int s5m_rtc_probe(struct platform_device *pdev) |
| 690 | { |
| 691 | struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); |
| 692 | struct sec_platform_data *pdata = s5m87xx->pdata; |
| 693 | struct s5m_rtc_info *info; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 694 | const struct regmap_config *regmap_cfg; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 695 | int ret, alarm_irq; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 696 | |
| 697 | if (!pdata) { |
| 698 | dev_err(pdev->dev.parent, "Platform data not supplied\n"); |
| 699 | return -ENODEV; |
| 700 | } |
| 701 | |
| 702 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
| 703 | if (!info) |
| 704 | return -ENOMEM; |
| 705 | |
Krzysztof Kozlowski | 94f9192 | 2015-04-16 12:49:27 -0700 | [diff] [blame] | 706 | switch (platform_get_device_id(pdev)->driver_data) { |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 707 | case S2MPS15X: |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 708 | case S2MPS14X: |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 709 | case S2MPS13X: |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 710 | regmap_cfg = &s2mps14_rtc_regmap_config; |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 711 | info->regs = &s2mps_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 712 | alarm_irq = S2MPS14_IRQ_RTCA0; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 713 | break; |
| 714 | case S5M8763X: |
| 715 | regmap_cfg = &s5m_rtc_regmap_config; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 716 | info->regs = &s5m_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 717 | alarm_irq = S5M8763_IRQ_ALARM0; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 718 | break; |
| 719 | case S5M8767X: |
| 720 | regmap_cfg = &s5m_rtc_regmap_config; |
Krzysztof Kozlowski | f8b23bb | 2014-06-10 15:18:44 -0700 | [diff] [blame] | 721 | info->regs = &s5m_rtc_regs; |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 722 | alarm_irq = S5M8767_IRQ_RTCA1; |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 723 | break; |
| 724 | default: |
Krzysztof Kozlowski | 94f9192 | 2015-04-16 12:49:27 -0700 | [diff] [blame] | 725 | dev_err(&pdev->dev, |
| 726 | "Device type %lu is not supported by RTC driver\n", |
| 727 | platform_get_device_id(pdev)->driver_data); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 728 | return -ENODEV; |
| 729 | } |
| 730 | |
| 731 | info->i2c = i2c_new_dummy(s5m87xx->i2c->adapter, RTC_I2C_ADDR); |
| 732 | if (!info->i2c) { |
| 733 | dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); |
| 734 | return -ENODEV; |
| 735 | } |
| 736 | |
| 737 | info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); |
| 738 | if (IS_ERR(info->regmap)) { |
| 739 | ret = PTR_ERR(info->regmap); |
| 740 | dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", |
| 741 | ret); |
| 742 | goto err; |
| 743 | } |
| 744 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 745 | info->dev = &pdev->dev; |
| 746 | info->s5m87xx = s5m87xx; |
Krzysztof Kozlowski | 94f9192 | 2015-04-16 12:49:27 -0700 | [diff] [blame] | 747 | info->device_type = platform_get_device_id(pdev)->driver_data; |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 748 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 749 | if (s5m87xx->irq_data) { |
| 750 | info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); |
| 751 | if (info->irq <= 0) { |
| 752 | ret = -EINVAL; |
| 753 | dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", |
Krzysztof Kozlowski | a0347f2 | 2014-06-10 15:18:47 -0700 | [diff] [blame] | 754 | alarm_irq); |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 755 | goto err; |
| 756 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 757 | } |
| 758 | |
| 759 | platform_set_drvdata(pdev, info); |
| 760 | |
| 761 | ret = s5m8767_rtc_init_reg(info); |
| 762 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 763 | device_init_wakeup(&pdev->dev, 1); |
| 764 | |
| 765 | info->rtc_dev = devm_rtc_device_register(&pdev->dev, "s5m-rtc", |
| 766 | &s5m_rtc_ops, THIS_MODULE); |
| 767 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 768 | if (IS_ERR(info->rtc_dev)) { |
| 769 | ret = PTR_ERR(info->rtc_dev); |
| 770 | goto err; |
| 771 | } |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 772 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 773 | if (!info->irq) { |
| 774 | dev_info(&pdev->dev, "Alarm IRQ not available\n"); |
| 775 | return 0; |
| 776 | } |
| 777 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 778 | ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, |
| 779 | s5m_rtc_alarm_irq, 0, "rtc-alarm0", |
| 780 | info); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 781 | if (ret < 0) { |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 782 | dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", |
| 783 | info->irq, ret); |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 784 | goto err; |
| 785 | } |
| 786 | |
| 787 | return 0; |
| 788 | |
| 789 | err: |
| 790 | i2c_unregister_device(info->i2c); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 791 | |
| 792 | return ret; |
| 793 | } |
| 794 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 795 | static int s5m_rtc_remove(struct platform_device *pdev) |
| 796 | { |
| 797 | struct s5m_rtc_info *info = platform_get_drvdata(pdev); |
| 798 | |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 799 | i2c_unregister_device(info->i2c); |
| 800 | |
| 801 | return 0; |
| 802 | } |
| 803 | |
Geert Uytterhoeven | 11ba5a1 | 2014-01-23 15:55:19 -0800 | [diff] [blame] | 804 | #ifdef CONFIG_PM_SLEEP |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 805 | static int s5m_rtc_resume(struct device *dev) |
| 806 | { |
| 807 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 808 | int ret = 0; |
| 809 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 810 | if (info->irq && device_may_wakeup(dev)) |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 811 | ret = disable_irq_wake(info->irq); |
| 812 | |
| 813 | return ret; |
| 814 | } |
| 815 | |
| 816 | static int s5m_rtc_suspend(struct device *dev) |
| 817 | { |
| 818 | struct s5m_rtc_info *info = dev_get_drvdata(dev); |
| 819 | int ret = 0; |
| 820 | |
Bartlomiej Zolnierkiewicz | b7d5b9a | 2014-08-29 15:18:53 -0700 | [diff] [blame] | 821 | if (info->irq && device_may_wakeup(dev)) |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 822 | ret = enable_irq_wake(info->irq); |
| 823 | |
| 824 | return ret; |
| 825 | } |
Geert Uytterhoeven | 11ba5a1 | 2014-01-23 15:55:19 -0800 | [diff] [blame] | 826 | #endif /* CONFIG_PM_SLEEP */ |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 827 | |
| 828 | static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume); |
| 829 | |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 830 | static const struct platform_device_id s5m_rtc_id[] = { |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 831 | { "s5m-rtc", S5M8767X }, |
Krzysztof Kozlowski | 5281f94 | 2015-04-16 12:45:45 -0700 | [diff] [blame] | 832 | { "s2mps13-rtc", S2MPS13X }, |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 833 | { "s2mps14-rtc", S2MPS14X }, |
Alim Akhtar | a65e5ef | 2015-11-20 16:07:53 +0530 | [diff] [blame] | 834 | { "s2mps15-rtc", S2MPS15X }, |
Andrey Ryabinin | 45cd15e | 2015-01-26 12:58:46 -0800 | [diff] [blame] | 835 | { }, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 836 | }; |
Javier Martinez Canillas | 63074cc | 2015-08-27 12:34:32 +0200 | [diff] [blame] | 837 | MODULE_DEVICE_TABLE(platform, s5m_rtc_id); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 838 | |
| 839 | static struct platform_driver s5m_rtc_driver = { |
| 840 | .driver = { |
| 841 | .name = "s5m-rtc", |
Krzysztof Kozlowski | 222ead7 | 2013-12-12 17:12:30 -0800 | [diff] [blame] | 842 | .pm = &s5m_rtc_pm_ops, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 843 | }, |
| 844 | .probe = s5m_rtc_probe, |
Krzysztof Kozlowski | e349c91 | 2014-04-14 09:40:45 +0200 | [diff] [blame] | 845 | .remove = s5m_rtc_remove, |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 846 | .id_table = s5m_rtc_id, |
| 847 | }; |
| 848 | |
| 849 | module_platform_driver(s5m_rtc_driver); |
| 850 | |
| 851 | /* Module information */ |
| 852 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); |
Krzysztof Kozlowski | 0c5deb1 | 2014-06-10 15:18:46 -0700 | [diff] [blame] | 853 | MODULE_DESCRIPTION("Samsung S5M/S2MPS14 RTC driver"); |
Sangbeom Kim | 5bccae6 | 2013-11-12 15:11:04 -0800 | [diff] [blame] | 854 | MODULE_LICENSE("GPL"); |
| 855 | MODULE_ALIAS("platform:s5m-rtc"); |