Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Real Time Clock driver for Freescale MC13783 PMIC |
| 3 | * |
| 4 | * (C) 2009 Sascha Hauer, Pengutronix |
| 5 | * (C) 2009 Uwe Kleine-Koenig, Pengutronix |
| 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 version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/mfd/mc13783.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 16 | #include <linux/slab.h> |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 17 | #include <linux/rtc.h> |
| 18 | |
| 19 | #define DRIVER_NAME "mc13783-rtc" |
| 20 | |
| 21 | #define MC13783_RTCTOD 20 |
| 22 | #define MC13783_RTCTODA 21 |
| 23 | #define MC13783_RTCDAY 22 |
| 24 | #define MC13783_RTCDAYA 23 |
| 25 | |
| 26 | struct mc13783_rtc { |
| 27 | struct rtc_device *rtc; |
| 28 | struct mc13783 *mc13783; |
| 29 | int valid; |
| 30 | }; |
| 31 | |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 32 | static int mc13783_rtc_irq_enable_unlocked(struct device *dev, |
| 33 | unsigned int enabled, int irq) |
| 34 | { |
| 35 | struct mc13783_rtc *priv = dev_get_drvdata(dev); |
| 36 | int (*func)(struct mc13783 *mc13783, int irq); |
| 37 | |
| 38 | if (!priv->valid) |
| 39 | return -ENODATA; |
| 40 | |
| 41 | func = enabled ? mc13783_irq_unmask : mc13783_irq_mask; |
| 42 | return func(priv->mc13783, irq); |
| 43 | } |
| 44 | |
| 45 | static int mc13783_rtc_irq_enable(struct device *dev, |
| 46 | unsigned int enabled, int irq) |
| 47 | { |
| 48 | struct mc13783_rtc *priv = dev_get_drvdata(dev); |
| 49 | int ret; |
| 50 | |
| 51 | mc13783_lock(priv->mc13783); |
| 52 | |
| 53 | ret = mc13783_rtc_irq_enable_unlocked(dev, enabled, irq); |
| 54 | |
| 55 | mc13783_unlock(priv->mc13783); |
| 56 | |
| 57 | return ret; |
| 58 | } |
| 59 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 60 | static int mc13783_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 61 | { |
| 62 | struct mc13783_rtc *priv = dev_get_drvdata(dev); |
| 63 | unsigned int seconds, days1, days2; |
| 64 | unsigned long s1970; |
| 65 | int ret; |
| 66 | |
| 67 | mc13783_lock(priv->mc13783); |
| 68 | |
| 69 | if (!priv->valid) { |
| 70 | ret = -ENODATA; |
| 71 | goto out; |
| 72 | } |
| 73 | |
| 74 | ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days1); |
| 75 | if (unlikely(ret)) |
| 76 | goto out; |
| 77 | |
| 78 | ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTOD, &seconds); |
| 79 | if (unlikely(ret)) |
| 80 | goto out; |
| 81 | |
| 82 | ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days2); |
| 83 | out: |
| 84 | mc13783_unlock(priv->mc13783); |
| 85 | |
| 86 | if (ret) |
| 87 | return ret; |
| 88 | |
| 89 | if (days2 == days1 + 1) { |
| 90 | if (seconds >= 86400 / 2) |
| 91 | days2 = days1; |
| 92 | else |
| 93 | days1 = days2; |
| 94 | } |
| 95 | |
| 96 | if (days1 != days2) |
| 97 | return -EIO; |
| 98 | |
| 99 | s1970 = days1 * 86400 + seconds; |
| 100 | |
| 101 | rtc_time_to_tm(s1970, tm); |
| 102 | |
| 103 | return rtc_valid_tm(tm); |
| 104 | } |
| 105 | |
| 106 | static int mc13783_rtc_set_mmss(struct device *dev, unsigned long secs) |
| 107 | { |
| 108 | struct mc13783_rtc *priv = dev_get_drvdata(dev); |
| 109 | unsigned int seconds, days; |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 110 | unsigned int alarmseconds; |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 111 | int ret; |
| 112 | |
| 113 | seconds = secs % 86400; |
| 114 | days = secs / 86400; |
| 115 | |
| 116 | mc13783_lock(priv->mc13783); |
| 117 | |
| 118 | /* |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 119 | * temporarily invalidate alarm to prevent triggering it when the day is |
| 120 | * already updated while the time isn't yet. |
| 121 | */ |
| 122 | ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTODA, &alarmseconds); |
| 123 | if (unlikely(ret)) |
| 124 | goto out; |
| 125 | |
| 126 | if (alarmseconds < 86400) { |
| 127 | ret = mc13783_reg_write(priv->mc13783, |
| 128 | MC13783_RTCTODA, 0x1ffff); |
| 129 | if (unlikely(ret)) |
| 130 | goto out; |
| 131 | } |
| 132 | |
| 133 | /* |
| 134 | * write seconds=0 to prevent a day switch between writing days |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 135 | * and seconds below |
| 136 | */ |
| 137 | ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTOD, 0); |
| 138 | if (unlikely(ret)) |
| 139 | goto out; |
| 140 | |
| 141 | ret = mc13783_reg_write(priv->mc13783, MC13783_RTCDAY, days); |
| 142 | if (unlikely(ret)) |
| 143 | goto out; |
| 144 | |
| 145 | ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTOD, seconds); |
| 146 | if (unlikely(ret)) |
| 147 | goto out; |
| 148 | |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 149 | /* restore alarm */ |
| 150 | if (alarmseconds < 86400) { |
| 151 | ret = mc13783_reg_write(priv->mc13783, |
| 152 | MC13783_RTCTODA, alarmseconds); |
| 153 | if (unlikely(ret)) |
| 154 | goto out; |
| 155 | } |
| 156 | |
Uwe Kleine-König | 4dd4dd6 | 2010-03-05 13:44:28 -0800 | [diff] [blame] | 157 | ret = mc13783_irq_ack(priv->mc13783, MC13783_IRQ_RTCRST); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 158 | if (unlikely(ret)) |
| 159 | goto out; |
| 160 | |
Uwe Kleine-König | 4dd4dd6 | 2010-03-05 13:44:28 -0800 | [diff] [blame] | 161 | ret = mc13783_irq_unmask(priv->mc13783, MC13783_IRQ_RTCRST); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 162 | out: |
| 163 | priv->valid = !ret; |
| 164 | |
| 165 | mc13783_unlock(priv->mc13783); |
| 166 | |
| 167 | return ret; |
| 168 | } |
| 169 | |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 170 | static int mc13783_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) |
| 171 | { |
| 172 | struct mc13783_rtc *priv = dev_get_drvdata(dev); |
| 173 | unsigned seconds, days; |
| 174 | unsigned long s1970; |
| 175 | int enabled, pending; |
| 176 | int ret; |
| 177 | |
| 178 | mc13783_lock(priv->mc13783); |
| 179 | |
| 180 | ret = mc13783_reg_read(priv->mc13783, MC13783_RTCTODA, &seconds); |
| 181 | if (unlikely(ret)) |
| 182 | goto out; |
| 183 | if (seconds >= 86400) { |
| 184 | ret = -ENODATA; |
| 185 | goto out; |
| 186 | } |
| 187 | |
| 188 | ret = mc13783_reg_read(priv->mc13783, MC13783_RTCDAY, &days); |
| 189 | if (unlikely(ret)) |
| 190 | goto out; |
| 191 | |
| 192 | ret = mc13783_irq_status(priv->mc13783, MC13783_IRQ_TODA, |
| 193 | &enabled, &pending); |
| 194 | |
| 195 | out: |
| 196 | mc13783_unlock(priv->mc13783); |
| 197 | |
| 198 | if (ret) |
| 199 | return ret; |
| 200 | |
| 201 | alarm->enabled = enabled; |
| 202 | alarm->pending = pending; |
| 203 | |
| 204 | s1970 = days * 86400 + seconds; |
| 205 | |
| 206 | rtc_time_to_tm(s1970, &alarm->time); |
| 207 | dev_dbg(dev, "%s: %lu\n", __func__, s1970); |
| 208 | |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | static int mc13783_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) |
| 213 | { |
| 214 | struct mc13783_rtc *priv = dev_get_drvdata(dev); |
| 215 | unsigned long s1970; |
| 216 | unsigned seconds, days; |
| 217 | int ret; |
| 218 | |
| 219 | mc13783_lock(priv->mc13783); |
| 220 | |
| 221 | /* disable alarm to prevent false triggering */ |
| 222 | ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTODA, 0x1ffff); |
| 223 | if (unlikely(ret)) |
| 224 | goto out; |
| 225 | |
| 226 | ret = mc13783_irq_ack(priv->mc13783, MC13783_IRQ_TODA); |
| 227 | if (unlikely(ret)) |
| 228 | goto out; |
| 229 | |
| 230 | ret = rtc_tm_to_time(&alarm->time, &s1970); |
| 231 | if (unlikely(ret)) |
| 232 | goto out; |
| 233 | |
| 234 | dev_dbg(dev, "%s: o%2.s %lu\n", __func__, alarm->enabled ? "n" : "ff", |
| 235 | s1970); |
| 236 | |
| 237 | ret = mc13783_rtc_irq_enable_unlocked(dev, alarm->enabled, |
| 238 | MC13783_IRQ_TODA); |
| 239 | if (unlikely(ret)) |
| 240 | goto out; |
| 241 | |
| 242 | seconds = s1970 % 86400; |
| 243 | days = s1970 / 86400; |
| 244 | |
| 245 | ret = mc13783_reg_write(priv->mc13783, MC13783_RTCDAYA, days); |
| 246 | if (unlikely(ret)) |
| 247 | goto out; |
| 248 | |
| 249 | ret = mc13783_reg_write(priv->mc13783, MC13783_RTCTODA, seconds); |
| 250 | |
| 251 | out: |
| 252 | mc13783_unlock(priv->mc13783); |
| 253 | |
| 254 | return ret; |
| 255 | } |
| 256 | |
| 257 | static irqreturn_t mc13783_rtc_alarm_handler(int irq, void *dev) |
| 258 | { |
| 259 | struct mc13783_rtc *priv = dev; |
| 260 | struct mc13783 *mc13783 = priv->mc13783; |
| 261 | |
| 262 | dev_dbg(&priv->rtc->dev, "Alarm\n"); |
| 263 | |
| 264 | rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_AF); |
| 265 | |
| 266 | mc13783_irq_ack(mc13783, irq); |
| 267 | |
| 268 | return IRQ_HANDLED; |
| 269 | } |
| 270 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 271 | static irqreturn_t mc13783_rtc_update_handler(int irq, void *dev) |
| 272 | { |
| 273 | struct mc13783_rtc *priv = dev; |
| 274 | struct mc13783 *mc13783 = priv->mc13783; |
| 275 | |
| 276 | dev_dbg(&priv->rtc->dev, "1HZ\n"); |
| 277 | |
| 278 | rtc_update_irq(priv->rtc, 1, RTC_IRQF | RTC_UF); |
| 279 | |
Uwe Kleine-König | 4dd4dd6 | 2010-03-05 13:44:28 -0800 | [diff] [blame] | 280 | mc13783_irq_ack(mc13783, irq); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 281 | |
| 282 | return IRQ_HANDLED; |
| 283 | } |
| 284 | |
| 285 | static int mc13783_rtc_update_irq_enable(struct device *dev, |
| 286 | unsigned int enabled) |
| 287 | { |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 288 | return mc13783_rtc_irq_enable(dev, enabled, MC13783_IRQ_1HZ); |
| 289 | } |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 290 | |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 291 | static int mc13783_rtc_alarm_irq_enable(struct device *dev, |
| 292 | unsigned int enabled) |
| 293 | { |
| 294 | return mc13783_rtc_irq_enable(dev, enabled, MC13783_IRQ_TODA); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | static const struct rtc_class_ops mc13783_rtc_ops = { |
| 298 | .read_time = mc13783_rtc_read_time, |
| 299 | .set_mmss = mc13783_rtc_set_mmss, |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 300 | .read_alarm = mc13783_rtc_read_alarm, |
| 301 | .set_alarm = mc13783_rtc_set_alarm, |
| 302 | .alarm_irq_enable = mc13783_rtc_alarm_irq_enable, |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 303 | .update_irq_enable = mc13783_rtc_update_irq_enable, |
| 304 | }; |
| 305 | |
| 306 | static irqreturn_t mc13783_rtc_reset_handler(int irq, void *dev) |
| 307 | { |
| 308 | struct mc13783_rtc *priv = dev; |
| 309 | struct mc13783 *mc13783 = priv->mc13783; |
| 310 | |
| 311 | dev_dbg(&priv->rtc->dev, "RTCRST\n"); |
| 312 | priv->valid = 0; |
| 313 | |
Uwe Kleine-König | 4dd4dd6 | 2010-03-05 13:44:28 -0800 | [diff] [blame] | 314 | mc13783_irq_mask(mc13783, irq); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 315 | |
| 316 | return IRQ_HANDLED; |
| 317 | } |
| 318 | |
| 319 | static int __devinit mc13783_rtc_probe(struct platform_device *pdev) |
| 320 | { |
| 321 | int ret; |
| 322 | struct mc13783_rtc *priv; |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 323 | struct mc13783 *mc13783; |
Uwe Kleine-König | 4c014e8 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 324 | int rtcrst_pending; |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 325 | |
| 326 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 327 | if (!priv) |
| 328 | return -ENOMEM; |
| 329 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 330 | mc13783 = dev_get_drvdata(pdev->dev.parent); |
| 331 | priv->mc13783 = mc13783; |
| 332 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 333 | platform_set_drvdata(pdev, priv); |
| 334 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 335 | mc13783_lock(mc13783); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 336 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 337 | ret = mc13783_irq_request(mc13783, MC13783_IRQ_RTCRST, |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 338 | mc13783_rtc_reset_handler, DRIVER_NAME, priv); |
| 339 | if (ret) |
| 340 | goto err_reset_irq_request; |
| 341 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 342 | ret = mc13783_irq_status(mc13783, MC13783_IRQ_RTCRST, |
Uwe Kleine-König | 4c014e8 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 343 | NULL, &rtcrst_pending); |
| 344 | if (ret) |
| 345 | goto err_reset_irq_status; |
| 346 | |
| 347 | priv->valid = !rtcrst_pending; |
| 348 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 349 | ret = mc13783_irq_request_nounmask(mc13783, MC13783_IRQ_1HZ, |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 350 | mc13783_rtc_update_handler, DRIVER_NAME, priv); |
| 351 | if (ret) |
| 352 | goto err_update_irq_request; |
| 353 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 354 | ret = mc13783_irq_request_nounmask(mc13783, MC13783_IRQ_TODA, |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 355 | mc13783_rtc_alarm_handler, DRIVER_NAME, priv); |
| 356 | if (ret) |
| 357 | goto err_alarm_irq_request; |
| 358 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 359 | priv->rtc = rtc_device_register(pdev->name, |
| 360 | &pdev->dev, &mc13783_rtc_ops, THIS_MODULE); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 361 | if (IS_ERR(priv->rtc)) { |
| 362 | ret = PTR_ERR(priv->rtc); |
| 363 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 364 | mc13783_irq_free(mc13783, MC13783_IRQ_TODA, priv); |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 365 | err_alarm_irq_request: |
| 366 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 367 | mc13783_irq_free(mc13783, MC13783_IRQ_1HZ, priv); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 368 | err_update_irq_request: |
| 369 | |
Uwe Kleine-König | 4c014e8 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 370 | err_reset_irq_status: |
| 371 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 372 | mc13783_irq_free(mc13783, MC13783_IRQ_RTCRST, priv); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 373 | err_reset_irq_request: |
| 374 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 375 | platform_set_drvdata(pdev, NULL); |
| 376 | kfree(priv); |
| 377 | } |
| 378 | |
Uwe Kleine-König | 05731b9 | 2010-03-23 13:35:13 -0700 | [diff] [blame] | 379 | mc13783_unlock(mc13783); |
Uwe Kleine-König | 4c014e8 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 380 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 381 | return ret; |
| 382 | } |
| 383 | |
| 384 | static int __devexit mc13783_rtc_remove(struct platform_device *pdev) |
| 385 | { |
| 386 | struct mc13783_rtc *priv = platform_get_drvdata(pdev); |
| 387 | |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 388 | mc13783_lock(priv->mc13783); |
| 389 | |
Uwe Kleine-König | 4c014e8 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 390 | rtc_device_unregister(priv->rtc); |
| 391 | |
Uwe Kleine-König | 9407351 | 2010-03-05 13:44:30 -0800 | [diff] [blame] | 392 | mc13783_irq_free(priv->mc13783, MC13783_IRQ_TODA, priv); |
Uwe Kleine-König | 43299f285 | 2009-12-15 16:46:09 -0800 | [diff] [blame] | 393 | mc13783_irq_free(priv->mc13783, MC13783_IRQ_1HZ, priv); |
| 394 | mc13783_irq_free(priv->mc13783, MC13783_IRQ_RTCRST, priv); |
| 395 | |
| 396 | mc13783_unlock(priv->mc13783); |
| 397 | |
| 398 | platform_set_drvdata(pdev, NULL); |
| 399 | |
| 400 | kfree(priv); |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | static struct platform_driver mc13783_rtc_driver = { |
| 406 | .remove = __devexit_p(mc13783_rtc_remove), |
| 407 | .driver = { |
| 408 | .name = DRIVER_NAME, |
| 409 | .owner = THIS_MODULE, |
| 410 | }, |
| 411 | }; |
| 412 | |
| 413 | static int __init mc13783_rtc_init(void) |
| 414 | { |
| 415 | return platform_driver_probe(&mc13783_rtc_driver, &mc13783_rtc_probe); |
| 416 | } |
| 417 | module_init(mc13783_rtc_init); |
| 418 | |
| 419 | static void __exit mc13783_rtc_exit(void) |
| 420 | { |
| 421 | platform_driver_unregister(&mc13783_rtc_driver); |
| 422 | } |
| 423 | module_exit(mc13783_rtc_exit); |
| 424 | |
| 425 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); |
| 426 | MODULE_DESCRIPTION("RTC driver for Freescale MC13783 PMIC"); |
| 427 | MODULE_LICENSE("GPL v2"); |
| 428 | MODULE_ALIAS("platform:" DRIVER_NAME); |