1. 14 1月, 2011 1 次提交
    • M
      mfd: Support LP3974 RTC · 337ce5d1
      MyungJoo Ham 提交于
      The first releases of LP3974 have a large delay in RTC registers,
      which requires 2 seconds of delay after writing to a rtc register
      (recommended by National Semiconductor's engineers)
      before reading it.
      
      If "rtc_delay" field of the platform data is true, the rtc driver
      assumes that such delays are required. Although we have not seen
      LP3974s without requiring such delays, we assume that such LP3974s
      will be released soon (or they have done so already) and they are
      supported by "lp3974" without setting "rtc_delay" at the platform
      data.
      
      This patch adds delays with msleep when writing values to RTC registers
      if the platform data has rtc_delay set.
      Signed-off-by: NMyungJoo Ham <myungjoo.ham@samsung.com>
      Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
      Reviewed-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
      Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
      337ce5d1
  2. 12 1月, 2011 2 次提交
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