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path: root/drivers/rtc/m41t60.c
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* rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD2008-10-18-8/+8
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* rtc: allow rtc_set to return an error and use it in cmd_dateJean-Christophe PLAGNIOL-VILLARD2008-09-07-3/+5
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* rtc: Clean drivers/rtc/MakefileMichal Simek2008-08-18-2/+1
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* rtc: Fix printf format warning in m41t60.cStefan Roese2008-07-10-1/+1
| | | | Signed-off-by: Stefan Roese <sr@denx.de>
* LWMON5: POST RTC fixYuri Tikhonov2008-03-20-2/+4
| | | | | | | | | | | | | | | | | Modify the RTC API to provide one a status for the time reported by the rtc_get() function: 0 - a reliable time is guaranteed, < 0 - a reliable time isn't guaranteed (power fault, clock issues, and so on). The RTC chip drivers are responsible for providing this info if the corresponding chip supports such functionality. If not - always report that the time is reliable. The POST RTC test was modified to detect the RTC faults utilizing this new rtc_get() feature. Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
* Add driver for STMicroelectronics M41T60 RTCLarry Johnson2007-12-27-0/+261
This driver is based on the driver for the M41T11. In the intended application, the RTC will be powered by a large capacitor, rather than a battery. The driver therefore checks to see whether the RTC has lost power. The chip's OUT bit is normally reset from its power-up state. If the OUT bit is read as set, or if the date and time are not valid, then the RTC is assumed to have lost power, and its date and time are reset to 1900-01-01 00:00:00. Support for adjusting the speed of the clock to improve accuracy is provided through an environment variable. Signed-off-by: Larry Johnson <lrj@acm.org>