[00/17] rtc: Unify RTC_VL_READ meaning
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Message ID 20191214220259.621996-1-alexandre.belloni@bootlin.com
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  • rtc: Unify RTC_VL_READ meaning
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Alexandre Belloni Dec. 14, 2019, 10:02 p.m. UTC
Hi,

This series unifies the meaning of RTC_VL_READ by redefining it as a
bitfield and defining the values of the various bits. This doesn't break
compatibility with userspaceas long as the return value was used as a
boolean, which should be the case.

The series also ensures RTC_VL_CLR doesn't clear the information when it
is about the data being invalid so the following rtc reads will properly
fail.

Alexandre Belloni (17):
  rtc: define RTC_VL_READ values
  rtc: Document RTC_VL_READ and RTC_VL_CLR ioctls
  rtc: abx80x: return meaningful value for RTC_VL_READ
  rtc: pcf2127: return meaningful value for RTC_VL_READ
  rtc: pcf8523: return meaningful value for RTC_VL_READ
  rtc: pcf8563: remove RTC_VL_CLR handling
  rtc: pcf8563: remove conditional compilation
  rtc: pcf8563: stop caching voltage_low
  rtc: pcf8563: return meaningful value for RTC_VL_READ
  rtc: pcf85063: remove RTC_VL_CLR handling
  rtc: pcf85063: return meaningful value for RTC_VL_READ
  rtc: rv3028: remove RTC_VL_CLR handling
  rtc: rv3028: return meaningful value for RTC_VL_READ
  rtc: rv8803: avoid clearing RV8803_FLAG_V2F in RTC_VL_CLR
  rtc: rv8803: return meaningful value for RTC_VL_READ
  rtc: rx8010: remove RTC_VL_CLR handling
  rtc: rx8010: return meaningful value for RTC_VL_READ

 Documentation/ABI/testing/rtc-cdev |  8 +++++++
 drivers/rtc/rtc-abx80x.c           |  7 ++----
 drivers/rtc/rtc-pcf2127.c          |  6 ++---
 drivers/rtc/rtc-pcf85063.c         | 16 ++-----------
 drivers/rtc/rtc-pcf8523.c          |  6 ++---
 drivers/rtc/rtc-pcf8563.c          | 36 ++++++------------------------
 drivers/rtc/rtc-rv3028.c           | 17 ++------------
 drivers/rtc/rtc-rv8803.c           | 16 ++++++-------
 drivers/rtc/rtc-rx8010.c           | 23 +++----------------
 include/uapi/linux/rtc.h           |  7 +++++-
 10 files changed, 42 insertions(+), 100 deletions(-)