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rtc: s5m.c: Add support for S2MPS15 RTC

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RTC found in s2mps15 is almost same as one found on s2mps13
with few differences in RTC_UPDATE register fields, like:
1> Bit[4] and Bit[1] are reversed
   - On s2mps13
          WUDR -> bit[4], AUDR -> bit[1]
   - On s2mps15
	  WUDR -> bit[1], AUDR -> bit[4]
2> In case of s2mps13, for alarm register, need to set both
   WDUR and ADUR high, whereas for s2mps15 only set AUDR to high.
3> On s2mps15, WUDR, RUDR and AUDR functions should never be used
   at the same time.

This patch add required changes to enable s2mps15 rtc timer.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Alim Akhtar
2015-11-20 16:07:53 +05:30
committed by Lee Jones
parent 51af206758
commit a65e5efa7c
2 changed files with 35 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/mfd/samsung/rtc.h
+2
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@@ -107,6 +107,8 @@ enum s2mps_rtc_reg {
#define S2MPS_RTC_WUDR_MASK (1 << S2MPS_RTC_WUDR_SHIFT)
#define S2MPS13_RTC_AUDR_SHIFT 1
#define S2MPS13_RTC_AUDR_MASK (1 << S2MPS13_RTC_AUDR_SHIFT)
#define S2MPS15_RTC_WUDR_SHIFT 1
#define S2MPS15_RTC_WUDR_MASK (1 << S2MPS15_RTC_WUDR_SHIFT)
#define S2MPS_RTC_RUDR_SHIFT 0
#define S2MPS_RTC_RUDR_MASK (1 << S2MPS_RTC_RUDR_SHIFT)
#define RTC_TCON_SHIFT 1