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rtc: ds1305/ds1306 driver

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Support the Dallas/Maxim DS1305 and DS1306 RTC chips.  These use SPI, and
support alarms, NVRAM, and a trickle charger for use when their backup
power supply is a supercap or rechargeable cell.

This basic driver doesn't yet support suspend/resume or wakealarms.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Brownell
2008-07-23 21:30:36 -07:00
committed by Linus Torvalds
parent 8fc2c767b0
commit 53e84b672c
4 changed files with 893 additions and 0 deletions
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10
drivers/rtc/Kconfig
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@@ -282,6 +282,16 @@ config RTC_DRV_M41T94
This driver can also be built as a module. If so, the module
will be called rtc-m41t94.
config RTC_DRV_DS1305
tristate "Dallas/Maxim DS1305/DS1306"
help
Select this driver to get support for the Dallas/Maxim DS1305
and DS1306 real time clock chips. These support a trickle
charger, alarms, and NVRAM in addition to the clock.
This driver can also be built as a module. If so, the module
will be called rtc-ds1305.
config RTC_DRV_MAX6902
tristate "Maxim MAX6902"
help