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path: root/drivers/rtc/rtc-omap.c
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Diffstat (limited to 'drivers/rtc/rtc-omap.c')
-rw-r--r--drivers/rtc/rtc-omap.c32
1 files changed, 9 insertions, 23 deletions
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index bbff0e2deb84..32994b0dd139 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -1,3 +1,4 @@
1// SPDX-License-Identifier: GPL-2.0+
1/* 2/*
2 * TI OMAP Real Time Clock interface for Linux 3 * TI OMAP Real Time Clock interface for Linux
3 * 4 *
@@ -6,11 +7,6 @@
6 * 7 *
7 * Copyright (C) 2006 David Brownell (new RTC framework) 8 * Copyright (C) 2006 David Brownell (new RTC framework)
8 * Copyright (C) 2014 Johan Hovold <johan@kernel.org> 9 * Copyright (C) 2014 Johan Hovold <johan@kernel.org>
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 */ 10 */
15 11
16#include <dt-bindings/gpio/gpio.h> 12#include <dt-bindings/gpio/gpio.h>
@@ -271,7 +267,7 @@ static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
271} 267}
272 268
273/* this hardware doesn't support "don't care" alarm fields */ 269/* this hardware doesn't support "don't care" alarm fields */
274static int tm2bcd(struct rtc_time *tm) 270static void tm2bcd(struct rtc_time *tm)
275{ 271{
276 tm->tm_sec = bin2bcd(tm->tm_sec); 272 tm->tm_sec = bin2bcd(tm->tm_sec);
277 tm->tm_min = bin2bcd(tm->tm_min); 273 tm->tm_min = bin2bcd(tm->tm_min);
@@ -279,13 +275,7 @@ static int tm2bcd(struct rtc_time *tm)
279 tm->tm_mday = bin2bcd(tm->tm_mday); 275 tm->tm_mday = bin2bcd(tm->tm_mday);
280 276
281 tm->tm_mon = bin2bcd(tm->tm_mon + 1); 277 tm->tm_mon = bin2bcd(tm->tm_mon + 1);
282
283 /* epoch == 1900 */
284 if (tm->tm_year < 100 || tm->tm_year > 199)
285 return -EINVAL;
286 tm->tm_year = bin2bcd(tm->tm_year - 100); 278 tm->tm_year = bin2bcd(tm->tm_year - 100);
287
288 return 0;
289} 279}
290 280
291static void bcd2tm(struct rtc_time *tm) 281static void bcd2tm(struct rtc_time *tm)
@@ -328,8 +318,7 @@ static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm)
328{ 318{
329 struct omap_rtc *rtc = dev_get_drvdata(dev); 319 struct omap_rtc *rtc = dev_get_drvdata(dev);
330 320
331 if (tm2bcd(tm) < 0) 321 tm2bcd(tm);
332 return -EINVAL;
333 322
334 local_irq_disable(); 323 local_irq_disable();
335 rtc_wait_not_busy(rtc); 324 rtc_wait_not_busy(rtc);
@@ -378,8 +367,7 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
378 struct omap_rtc *rtc = dev_get_drvdata(dev); 367 struct omap_rtc *rtc = dev_get_drvdata(dev);
379 u8 reg, irqwake_reg = 0; 368 u8 reg, irqwake_reg = 0;
380 369
381 if (tm2bcd(&alm->time) < 0) 370 tm2bcd(&alm->time);
382 return -EINVAL;
383 371
384 local_irq_disable(); 372 local_irq_disable();
385 rtc_wait_not_busy(rtc); 373 rtc_wait_not_busy(rtc);
@@ -441,14 +429,10 @@ again:
441 omap_rtc_read_time_raw(rtc, &tm); 429 omap_rtc_read_time_raw(rtc, &tm);
442 seconds = tm.tm_sec; 430 seconds = tm.tm_sec;
443 bcd2tm(&tm); 431 bcd2tm(&tm);
444 rtc_tm_to_time(&tm, &now); 432 now = rtc_tm_to_time64(&tm);
445 rtc_time_to_tm(now + 1, &tm); 433 rtc_time64_to_tm(now + 1, &tm);
446 434
447 if (tm2bcd(&tm) < 0) { 435 tm2bcd(&tm);
448 dev_err(&rtc->rtc->dev, "power off failed\n");
449 rtc->type->lock(rtc);
450 return;
451 }
452 436
453 rtc_wait_not_busy(rtc); 437 rtc_wait_not_busy(rtc);
454 438
@@ -845,6 +829,8 @@ static int omap_rtc_probe(struct platform_device *pdev)
845 } 829 }
846 830
847 rtc->rtc->ops = &omap_rtc_ops; 831 rtc->rtc->ops = &omap_rtc_ops;
832 rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
833 rtc->rtc->range_max = RTC_TIMESTAMP_END_2099;
848 omap_rtc_nvmem_config.priv = rtc; 834 omap_rtc_nvmem_config.priv = rtc;
849 835
850 /* handle periodic and alarm irqs */ 836 /* handle periodic and alarm irqs */