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2012-10-06rtc: add MAX8907 RTC driverStephen Warren1-0/+244
The MAX8907 is an I2C-based power-management IC containing voltage regulators, a reset controller, a real-time clock, and a touch-screen controller. The driver is based on an original by or fixed by: * Tom Cherry * Prashant Gaikwad * Joseph Yoon During upstreaming, I (swarren): * Converted to regmap. * Fixed handling of RTC_HOUR register containing 12. * Fixed handling of RTC_WEEKDAY register. * General cleanup. Signed-off-by: Stephen Warren <swarren@nvidia.com> Cc: Tom Cherry <tcherry@nvidia.com> Cc: Prashant Gaikwad <pgaikwad@nvidia.com> Cc: Joseph Yoon <tyoon@nvidia.com> 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>