Alexandre Belloni | 56573ca | 2019-04-10 22:56:04 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 2 | /* |
| 3 | * drivers/rtc/rtc-pcf85363.c |
| 4 | * |
| 5 | * Driver for NXP PCF85363 real-time clock. |
| 6 | * |
| 7 | * Copyright (C) 2017 Eric Nelson |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 8 | */ |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/i2c.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/rtc.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/err.h> |
| 15 | #include <linux/errno.h> |
| 16 | #include <linux/bcd.h> |
| 17 | #include <linux/of.h> |
| 18 | #include <linux/of_device.h> |
| 19 | #include <linux/regmap.h> |
| 20 | |
| 21 | /* |
| 22 | * Date/Time registers |
| 23 | */ |
| 24 | #define DT_100THS 0x00 |
| 25 | #define DT_SECS 0x01 |
| 26 | #define DT_MINUTES 0x02 |
| 27 | #define DT_HOURS 0x03 |
| 28 | #define DT_DAYS 0x04 |
| 29 | #define DT_WEEKDAYS 0x05 |
| 30 | #define DT_MONTHS 0x06 |
| 31 | #define DT_YEARS 0x07 |
| 32 | |
| 33 | /* |
| 34 | * Alarm registers |
| 35 | */ |
| 36 | #define DT_SECOND_ALM1 0x08 |
| 37 | #define DT_MINUTE_ALM1 0x09 |
| 38 | #define DT_HOUR_ALM1 0x0a |
| 39 | #define DT_DAY_ALM1 0x0b |
| 40 | #define DT_MONTH_ALM1 0x0c |
| 41 | #define DT_MINUTE_ALM2 0x0d |
| 42 | #define DT_HOUR_ALM2 0x0e |
| 43 | #define DT_WEEKDAY_ALM2 0x0f |
| 44 | #define DT_ALARM_EN 0x10 |
| 45 | |
| 46 | /* |
| 47 | * Time stamp registers |
| 48 | */ |
| 49 | #define DT_TIMESTAMP1 0x11 |
| 50 | #define DT_TIMESTAMP2 0x17 |
| 51 | #define DT_TIMESTAMP3 0x1d |
| 52 | #define DT_TS_MODE 0x23 |
| 53 | |
| 54 | /* |
| 55 | * control registers |
| 56 | */ |
| 57 | #define CTRL_OFFSET 0x24 |
| 58 | #define CTRL_OSCILLATOR 0x25 |
| 59 | #define CTRL_BATTERY 0x26 |
| 60 | #define CTRL_PIN_IO 0x27 |
| 61 | #define CTRL_FUNCTION 0x28 |
| 62 | #define CTRL_INTA_EN 0x29 |
| 63 | #define CTRL_INTB_EN 0x2a |
| 64 | #define CTRL_FLAGS 0x2b |
| 65 | #define CTRL_RAMBYTE 0x2c |
| 66 | #define CTRL_WDOG 0x2d |
| 67 | #define CTRL_STOP_EN 0x2e |
| 68 | #define CTRL_RESETS 0x2f |
| 69 | #define CTRL_RAM 0x40 |
| 70 | |
Alexandre Belloni | e5aac26 | 2018-03-01 01:42:19 +0100 | [diff] [blame] | 71 | #define ALRM_SEC_A1E BIT(0) |
| 72 | #define ALRM_MIN_A1E BIT(1) |
| 73 | #define ALRM_HR_A1E BIT(2) |
| 74 | #define ALRM_DAY_A1E BIT(3) |
| 75 | #define ALRM_MON_A1E BIT(4) |
| 76 | #define ALRM_MIN_A2E BIT(5) |
| 77 | #define ALRM_HR_A2E BIT(6) |
| 78 | #define ALRM_DAY_A2E BIT(7) |
| 79 | |
| 80 | #define INT_WDIE BIT(0) |
| 81 | #define INT_BSIE BIT(1) |
| 82 | #define INT_TSRIE BIT(2) |
| 83 | #define INT_A2IE BIT(3) |
| 84 | #define INT_A1IE BIT(4) |
| 85 | #define INT_OIE BIT(5) |
| 86 | #define INT_PIE BIT(6) |
| 87 | #define INT_ILP BIT(7) |
| 88 | |
| 89 | #define FLAGS_TSR1F BIT(0) |
| 90 | #define FLAGS_TSR2F BIT(1) |
| 91 | #define FLAGS_TSR3F BIT(2) |
| 92 | #define FLAGS_BSF BIT(3) |
| 93 | #define FLAGS_WDF BIT(4) |
| 94 | #define FLAGS_A1F BIT(5) |
| 95 | #define FLAGS_A2F BIT(6) |
| 96 | #define FLAGS_PIF BIT(7) |
| 97 | |
| 98 | #define PIN_IO_INTAPM GENMASK(1, 0) |
| 99 | #define PIN_IO_INTA_CLK 0 |
| 100 | #define PIN_IO_INTA_BAT 1 |
| 101 | #define PIN_IO_INTA_OUT 2 |
| 102 | #define PIN_IO_INTA_HIZ 3 |
| 103 | |
Alexandre Belloni | 188306a | 2018-02-24 01:08:53 +0100 | [diff] [blame] | 104 | #define STOP_EN_STOP BIT(0) |
| 105 | |
| 106 | #define RESET_CPR 0xa4 |
| 107 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 108 | #define NVRAM_SIZE 0x40 |
| 109 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 110 | struct pcf85363 { |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 111 | struct rtc_device *rtc; |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 112 | struct regmap *regmap; |
| 113 | }; |
| 114 | |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 115 | struct pcf85x63_config { |
| 116 | struct regmap_config regmap; |
| 117 | unsigned int num_nvram; |
| 118 | }; |
| 119 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 120 | static int pcf85363_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 121 | { |
| 122 | struct pcf85363 *pcf85363 = dev_get_drvdata(dev); |
| 123 | unsigned char buf[DT_YEARS + 1]; |
| 124 | int ret, len = sizeof(buf); |
| 125 | |
| 126 | /* read the RTC date and time registers all at once */ |
| 127 | ret = regmap_bulk_read(pcf85363->regmap, DT_100THS, buf, len); |
| 128 | if (ret) { |
| 129 | dev_err(dev, "%s: error %d\n", __func__, ret); |
| 130 | return ret; |
| 131 | } |
| 132 | |
| 133 | tm->tm_year = bcd2bin(buf[DT_YEARS]); |
| 134 | /* adjust for 1900 base of rtc_time */ |
| 135 | tm->tm_year += 100; |
| 136 | |
| 137 | tm->tm_wday = buf[DT_WEEKDAYS] & 7; |
| 138 | buf[DT_SECS] &= 0x7F; |
| 139 | tm->tm_sec = bcd2bin(buf[DT_SECS]); |
| 140 | buf[DT_MINUTES] &= 0x7F; |
| 141 | tm->tm_min = bcd2bin(buf[DT_MINUTES]); |
| 142 | tm->tm_hour = bcd2bin(buf[DT_HOURS]); |
| 143 | tm->tm_mday = bcd2bin(buf[DT_DAYS]); |
| 144 | tm->tm_mon = bcd2bin(buf[DT_MONTHS]) - 1; |
| 145 | |
| 146 | return 0; |
| 147 | } |
| 148 | |
| 149 | static int pcf85363_rtc_set_time(struct device *dev, struct rtc_time *tm) |
| 150 | { |
| 151 | struct pcf85363 *pcf85363 = dev_get_drvdata(dev); |
Alexandre Belloni | 188306a | 2018-02-24 01:08:53 +0100 | [diff] [blame] | 152 | unsigned char tmp[11]; |
| 153 | unsigned char *buf = &tmp[2]; |
| 154 | int ret; |
| 155 | |
| 156 | tmp[0] = STOP_EN_STOP; |
| 157 | tmp[1] = RESET_CPR; |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 158 | |
| 159 | buf[DT_100THS] = 0; |
| 160 | buf[DT_SECS] = bin2bcd(tm->tm_sec); |
| 161 | buf[DT_MINUTES] = bin2bcd(tm->tm_min); |
| 162 | buf[DT_HOURS] = bin2bcd(tm->tm_hour); |
| 163 | buf[DT_DAYS] = bin2bcd(tm->tm_mday); |
| 164 | buf[DT_WEEKDAYS] = tm->tm_wday; |
| 165 | buf[DT_MONTHS] = bin2bcd(tm->tm_mon + 1); |
| 166 | buf[DT_YEARS] = bin2bcd(tm->tm_year % 100); |
| 167 | |
Alexandre Belloni | 188306a | 2018-02-24 01:08:53 +0100 | [diff] [blame] | 168 | ret = regmap_bulk_write(pcf85363->regmap, CTRL_STOP_EN, |
Biwen Li | 7ef6612 | 2019-08-29 10:14:18 +0800 | [diff] [blame] | 169 | tmp, 2); |
| 170 | if (ret) |
| 171 | return ret; |
| 172 | |
| 173 | ret = regmap_bulk_write(pcf85363->regmap, DT_100THS, |
| 174 | buf, sizeof(tmp) - 2); |
Alexandre Belloni | 188306a | 2018-02-24 01:08:53 +0100 | [diff] [blame] | 175 | if (ret) |
| 176 | return ret; |
| 177 | |
| 178 | return regmap_write(pcf85363->regmap, CTRL_STOP_EN, 0); |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 179 | } |
| 180 | |
Alexandre Belloni | e5aac26 | 2018-03-01 01:42:19 +0100 | [diff] [blame] | 181 | static int pcf85363_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 182 | { |
| 183 | struct pcf85363 *pcf85363 = dev_get_drvdata(dev); |
| 184 | unsigned char buf[DT_MONTH_ALM1 - DT_SECOND_ALM1 + 1]; |
| 185 | unsigned int val; |
| 186 | int ret; |
| 187 | |
| 188 | ret = regmap_bulk_read(pcf85363->regmap, DT_SECOND_ALM1, buf, |
| 189 | sizeof(buf)); |
| 190 | if (ret) |
| 191 | return ret; |
| 192 | |
| 193 | alrm->time.tm_sec = bcd2bin(buf[0]); |
| 194 | alrm->time.tm_min = bcd2bin(buf[1]); |
| 195 | alrm->time.tm_hour = bcd2bin(buf[2]); |
| 196 | alrm->time.tm_mday = bcd2bin(buf[3]); |
| 197 | alrm->time.tm_mon = bcd2bin(buf[4]) - 1; |
| 198 | |
| 199 | ret = regmap_read(pcf85363->regmap, CTRL_INTA_EN, &val); |
| 200 | if (ret) |
| 201 | return ret; |
| 202 | |
| 203 | alrm->enabled = !!(val & INT_A1IE); |
| 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static int _pcf85363_rtc_alarm_irq_enable(struct pcf85363 *pcf85363, unsigned |
| 209 | int enabled) |
| 210 | { |
| 211 | unsigned int alarm_flags = ALRM_SEC_A1E | ALRM_MIN_A1E | ALRM_HR_A1E | |
| 212 | ALRM_DAY_A1E | ALRM_MON_A1E; |
| 213 | int ret; |
| 214 | |
| 215 | ret = regmap_update_bits(pcf85363->regmap, DT_ALARM_EN, alarm_flags, |
| 216 | enabled ? alarm_flags : 0); |
| 217 | if (ret) |
| 218 | return ret; |
| 219 | |
| 220 | ret = regmap_update_bits(pcf85363->regmap, CTRL_INTA_EN, |
| 221 | INT_A1IE, enabled ? INT_A1IE : 0); |
| 222 | |
| 223 | if (ret || enabled) |
| 224 | return ret; |
| 225 | |
| 226 | /* clear current flags */ |
| 227 | return regmap_update_bits(pcf85363->regmap, CTRL_FLAGS, FLAGS_A1F, 0); |
| 228 | } |
| 229 | |
| 230 | static int pcf85363_rtc_alarm_irq_enable(struct device *dev, |
| 231 | unsigned int enabled) |
| 232 | { |
| 233 | struct pcf85363 *pcf85363 = dev_get_drvdata(dev); |
| 234 | |
| 235 | return _pcf85363_rtc_alarm_irq_enable(pcf85363, enabled); |
| 236 | } |
| 237 | |
| 238 | static int pcf85363_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
| 239 | { |
| 240 | struct pcf85363 *pcf85363 = dev_get_drvdata(dev); |
| 241 | unsigned char buf[DT_MONTH_ALM1 - DT_SECOND_ALM1 + 1]; |
| 242 | int ret; |
| 243 | |
| 244 | buf[0] = bin2bcd(alrm->time.tm_sec); |
| 245 | buf[1] = bin2bcd(alrm->time.tm_min); |
| 246 | buf[2] = bin2bcd(alrm->time.tm_hour); |
| 247 | buf[3] = bin2bcd(alrm->time.tm_mday); |
| 248 | buf[4] = bin2bcd(alrm->time.tm_mon + 1); |
| 249 | |
| 250 | /* |
| 251 | * Disable the alarm interrupt before changing the value to avoid |
| 252 | * spurious interrupts |
| 253 | */ |
| 254 | ret = _pcf85363_rtc_alarm_irq_enable(pcf85363, 0); |
| 255 | if (ret) |
| 256 | return ret; |
| 257 | |
| 258 | ret = regmap_bulk_write(pcf85363->regmap, DT_SECOND_ALM1, buf, |
| 259 | sizeof(buf)); |
| 260 | if (ret) |
| 261 | return ret; |
| 262 | |
| 263 | return _pcf85363_rtc_alarm_irq_enable(pcf85363, alrm->enabled); |
| 264 | } |
| 265 | |
| 266 | static irqreturn_t pcf85363_rtc_handle_irq(int irq, void *dev_id) |
| 267 | { |
| 268 | struct pcf85363 *pcf85363 = i2c_get_clientdata(dev_id); |
| 269 | unsigned int flags; |
| 270 | int err; |
| 271 | |
| 272 | err = regmap_read(pcf85363->regmap, CTRL_FLAGS, &flags); |
| 273 | if (err) |
| 274 | return IRQ_NONE; |
| 275 | |
| 276 | if (flags & FLAGS_A1F) { |
| 277 | rtc_update_irq(pcf85363->rtc, 1, RTC_IRQF | RTC_AF); |
| 278 | regmap_update_bits(pcf85363->regmap, CTRL_FLAGS, FLAGS_A1F, 0); |
| 279 | return IRQ_HANDLED; |
| 280 | } |
| 281 | |
| 282 | return IRQ_NONE; |
| 283 | } |
| 284 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 285 | static const struct rtc_class_ops rtc_ops = { |
| 286 | .read_time = pcf85363_rtc_read_time, |
| 287 | .set_time = pcf85363_rtc_set_time, |
Alexandre Belloni | e5aac26 | 2018-03-01 01:42:19 +0100 | [diff] [blame] | 288 | .read_alarm = pcf85363_rtc_read_alarm, |
| 289 | .set_alarm = pcf85363_rtc_set_alarm, |
| 290 | .alarm_irq_enable = pcf85363_rtc_alarm_irq_enable, |
| 291 | }; |
| 292 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 293 | static int pcf85363_nvram_read(void *priv, unsigned int offset, void *val, |
| 294 | size_t bytes) |
| 295 | { |
| 296 | struct pcf85363 *pcf85363 = priv; |
| 297 | |
| 298 | return regmap_bulk_read(pcf85363->regmap, CTRL_RAM + offset, |
| 299 | val, bytes); |
| 300 | } |
| 301 | |
| 302 | static int pcf85363_nvram_write(void *priv, unsigned int offset, void *val, |
| 303 | size_t bytes) |
| 304 | { |
| 305 | struct pcf85363 *pcf85363 = priv; |
| 306 | |
| 307 | return regmap_bulk_write(pcf85363->regmap, CTRL_RAM + offset, |
| 308 | val, bytes); |
| 309 | } |
| 310 | |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 311 | static int pcf85x63_nvram_read(void *priv, unsigned int offset, void *val, |
| 312 | size_t bytes) |
| 313 | { |
| 314 | struct pcf85363 *pcf85363 = priv; |
| 315 | unsigned int tmp_val; |
| 316 | int ret; |
| 317 | |
| 318 | ret = regmap_read(pcf85363->regmap, CTRL_RAMBYTE, &tmp_val); |
| 319 | (*(unsigned char *) val) = (unsigned char) tmp_val; |
| 320 | |
| 321 | return ret; |
| 322 | } |
| 323 | |
| 324 | static int pcf85x63_nvram_write(void *priv, unsigned int offset, void *val, |
| 325 | size_t bytes) |
| 326 | { |
| 327 | struct pcf85363 *pcf85363 = priv; |
| 328 | unsigned char tmp_val; |
| 329 | |
| 330 | tmp_val = *((unsigned char *)val); |
| 331 | return regmap_write(pcf85363->regmap, CTRL_RAMBYTE, |
| 332 | (unsigned int)tmp_val); |
| 333 | } |
| 334 | |
| 335 | static const struct pcf85x63_config pcf_85263_config = { |
| 336 | .regmap = { |
| 337 | .reg_bits = 8, |
| 338 | .val_bits = 8, |
| 339 | .max_register = 0x2f, |
| 340 | }, |
| 341 | .num_nvram = 1 |
| 342 | }; |
| 343 | |
| 344 | static const struct pcf85x63_config pcf_85363_config = { |
| 345 | .regmap = { |
| 346 | .reg_bits = 8, |
| 347 | .val_bits = 8, |
| 348 | .max_register = 0x7f, |
| 349 | }, |
| 350 | .num_nvram = 2 |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 351 | }; |
| 352 | |
| 353 | static int pcf85363_probe(struct i2c_client *client, |
| 354 | const struct i2c_device_id *id) |
| 355 | { |
| 356 | struct pcf85363 *pcf85363; |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 357 | const struct pcf85x63_config *config = &pcf_85363_config; |
| 358 | const void *data = of_device_get_match_data(&client->dev); |
| 359 | static struct nvmem_config nvmem_cfg[] = { |
| 360 | { |
| 361 | .name = "pcf85x63-", |
| 362 | .word_size = 1, |
| 363 | .stride = 1, |
| 364 | .size = 1, |
| 365 | .reg_read = pcf85x63_nvram_read, |
| 366 | .reg_write = pcf85x63_nvram_write, |
| 367 | }, { |
| 368 | .name = "pcf85363-", |
| 369 | .word_size = 1, |
| 370 | .stride = 1, |
| 371 | .size = NVRAM_SIZE, |
| 372 | .reg_read = pcf85363_nvram_read, |
| 373 | .reg_write = pcf85363_nvram_write, |
| 374 | }, |
Alexandre Belloni | 0e7a412 | 2018-02-12 23:47:30 +0100 | [diff] [blame] | 375 | }; |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 376 | int ret, i; |
| 377 | |
| 378 | if (data) |
| 379 | config = data; |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 380 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 381 | pcf85363 = devm_kzalloc(&client->dev, sizeof(struct pcf85363), |
| 382 | GFP_KERNEL); |
| 383 | if (!pcf85363) |
| 384 | return -ENOMEM; |
| 385 | |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 386 | pcf85363->regmap = devm_regmap_init_i2c(client, &config->regmap); |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 387 | if (IS_ERR(pcf85363->regmap)) { |
| 388 | dev_err(&client->dev, "regmap allocation failed\n"); |
| 389 | return PTR_ERR(pcf85363->regmap); |
| 390 | } |
| 391 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 392 | i2c_set_clientdata(client, pcf85363); |
| 393 | |
Alexandre Belloni | 8f7b1d7 | 2019-04-10 22:56:00 +0200 | [diff] [blame] | 394 | pcf85363->rtc = devm_rtc_allocate_device(&client->dev); |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 395 | if (IS_ERR(pcf85363->rtc)) |
| 396 | return PTR_ERR(pcf85363->rtc); |
| 397 | |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 398 | pcf85363->rtc->ops = &rtc_ops; |
Alexandre Belloni | c0ec831 | 2019-04-10 22:56:01 +0200 | [diff] [blame] | 399 | pcf85363->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; |
| 400 | pcf85363->rtc->range_max = RTC_TIMESTAMP_END_2099; |
Alexandre Belloni | 732b734 | 2021-01-11 00:17:45 +0100 | [diff] [blame] | 401 | clear_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features); |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 402 | |
Alexandre Belloni | e5aac26 | 2018-03-01 01:42:19 +0100 | [diff] [blame] | 403 | if (client->irq > 0) { |
| 404 | regmap_write(pcf85363->regmap, CTRL_FLAGS, 0); |
| 405 | regmap_update_bits(pcf85363->regmap, CTRL_PIN_IO, |
| 406 | PIN_IO_INTA_OUT, PIN_IO_INTAPM); |
Alexandre Belloni | 8f7b1d7 | 2019-04-10 22:56:00 +0200 | [diff] [blame] | 407 | ret = devm_request_threaded_irq(&client->dev, client->irq, |
Alexandre Belloni | e5aac26 | 2018-03-01 01:42:19 +0100 | [diff] [blame] | 408 | NULL, pcf85363_rtc_handle_irq, |
| 409 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, |
| 410 | "pcf85363", client); |
| 411 | if (ret) |
| 412 | dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n"); |
| 413 | else |
Alexandre Belloni | 732b734 | 2021-01-11 00:17:45 +0100 | [diff] [blame] | 414 | set_bit(RTC_FEATURE_ALARM, pcf85363->rtc->features); |
Alexandre Belloni | e5aac26 | 2018-03-01 01:42:19 +0100 | [diff] [blame] | 415 | } |
| 416 | |
Bartosz Golaszewski | fdcfd85 | 2020-11-09 17:34:08 +0100 | [diff] [blame] | 417 | ret = devm_rtc_register_device(pcf85363->rtc); |
Alexandre Belloni | 24849d1 | 2018-02-12 23:47:29 +0100 | [diff] [blame] | 418 | |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 419 | for (i = 0; i < config->num_nvram; i++) { |
| 420 | nvmem_cfg[i].priv = pcf85363; |
Bartosz Golaszewski | 3a905c2d | 2020-11-09 17:34:06 +0100 | [diff] [blame] | 421 | devm_rtc_nvmem_register(pcf85363->rtc, &nvmem_cfg[i]); |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 422 | } |
Alexandre Belloni | 24849d1 | 2018-02-12 23:47:29 +0100 | [diff] [blame] | 423 | |
| 424 | return ret; |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 425 | } |
| 426 | |
Alexandre Belloni | c506bc1 | 2021-02-02 12:22:09 +0100 | [diff] [blame] | 427 | static const __maybe_unused struct of_device_id dev_ids[] = { |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 428 | { .compatible = "nxp,pcf85263", .data = &pcf_85263_config }, |
| 429 | { .compatible = "nxp,pcf85363", .data = &pcf_85363_config }, |
| 430 | { /* sentinel */ } |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 431 | }; |
| 432 | MODULE_DEVICE_TABLE(of, dev_ids); |
| 433 | |
| 434 | static struct i2c_driver pcf85363_driver = { |
| 435 | .driver = { |
| 436 | .name = "pcf85363", |
| 437 | .of_match_table = of_match_ptr(dev_ids), |
| 438 | }, |
| 439 | .probe = pcf85363_probe, |
| 440 | }; |
| 441 | |
| 442 | module_i2c_driver(pcf85363_driver); |
| 443 | |
| 444 | MODULE_AUTHOR("Eric Nelson"); |
Biju Das | fc97993 | 2018-12-07 11:27:44 +0000 | [diff] [blame] | 445 | MODULE_DESCRIPTION("pcf85263/pcf85363 I2C RTC driver"); |
Eric Nelson | a9687aa | 2017-11-01 08:01:20 -0700 | [diff] [blame] | 446 | MODULE_LICENSE("GPL"); |