linux.git/drivers/rtc, branch v4.0-rc1

Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2015-02-19T18:36:45+00:00

Pull kconfig updates from Michal Marek:
 "Yann E Morin was supposed to take over kconfig maintainership, but
  this hasn't happened.  So I'm sending a few kconfig patches that I
  collected:

   - Fix for missing va_end in kconfig
   - merge_config.sh displays used if given too few arguments
   - s/boolean/bool/ in Kconfig files for consistency, with the plan to
     only support bool in the future"

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kconfig: use va_end to match corresponding va_start
  merge_config.sh: Display usage if given too few arguments
  kconfig: use bool instead of boolean for type definition attributes

Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2015-02-17T17:17:33+00:00

Pull ARM SoC cleanups from Olof Johansson:
 "This is a good healthy set of various code removals.  Total net delta
  is 8100 lines removed.

  Among the larger cleanups are:

   - Removal of old Samsung S3C DMA infrastructure by Arnd
   - Removal of the non-DT version of the 'lager' board by Magnus Damm
   - General stale code removal on OMAP and Davinci by Rickard Strandqvist
   - Removal of non-DT support on am3517 platforms by Tony Lindgren

  ... plus several other cleanups of various platforms across the board"

* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (47 commits)
  ARM: sirf: drop redundant function and marco declaration
  arm: omap: specify PMUs are for ARMv7 CPUs
  arm: shmobile: specify PMUs are for ARMv7 CPUs
  arm: iop: specify PMUs are for XScale CPUs
  arm: pxa: specify PMUs are for XScale CPUs
  arm: realview: specify PMU types
  ARM: SAMSUNG: remove unused DMA infrastructure
  ARM: OMAP3: Add back Kconfig option MACH_OMAP3517EVM for ASoC
  ARM: davinci: Remove CDCE949 driver
  ARM: at91: remove useless at91rm9200_set_type()
  ARM: at91: remove useless at91rm9200_dt_initialize()
  ARM: at91: move debug-macro.S into the common space
  ARM: at91: remove useless at91_sysirq_mask_rtx
  ARM: at91: remove useless config MACH_AT91SAM9_DT
  ARM: at91: remove useless config MACH_AT91RM9200_DT
  ARM: at91: remove unused mach/memory.h
  ARM: at91: remove useless header file includes
  ARM: at91: remove unneeded header file
  rtc: at91/Kconfig: remove useless options
  ARM: at91/Documentation: add a README for Atmel SoCs
  ...

rtc: add driver for DS1685 family of real time clocks

2015-02-17T01:56:05+00:00

This adds a driver for the Dallas/Maxim DS1685-family of RTC chips.  It
supports the DS1685/DS1687, DS1688/DS1691, DS1689/DS1693, DS17285/DS17287,
DS17485/DS17487, and DS17885/DS17887 RTC chips.  These chips are commonly
found in SGI O2 and SGI Octane systems.  It was originally derived from a
driver patch submitted by Matthias Fuchs many years ago for use in
EPPC-405-UC modules, which also used these RTCs.  In addition to the
time-keeping functions, this RTC also handles the shutdown mechanism of
the O2 and Octane and acts as a partial NVRAM for the boot PROMS in these
systems.

Verified on both an SGI O2 and an SGI Octane.

Signed-off-by: Joshua Kinard 
Cc: Ralf Baechle 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: isl12057: deprecate use of isl in compatible string for isil

2015-02-17T01:56:02+00:00

"isil" and "isl" prefixes are used at various locations inside the kernel
to reference Intersil corporation.  This patch is part of a series fixing
those locations were "isl" is used in compatible strings to use the now
expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
version).  The old compatible string is kept for backward compatibility.

Signed-off-by: Arnaud Ebalard 
Cc: Rob Herring 
Cc: Pawel Moll 
Cc: Mark Rutland 
Cc: Ian Campbell 
Cc: Kumar Gala 
Cc: Russell King 
Cc: Stephen Warren 
Cc: Thierry Reding 
Cc: Alexandre Courbot 
Cc: Uwe Kleine-Knig 
Cc: Alessandro Zummo 
Cc: Peter Huewe 
Cc: Linus Walleij 
Cc: Mark Brown 
Cc: Arnd Bergmann 
Cc: Darshana Padmadas 
Cc: Grant Likely 
Cc: Rob Landley 
Cc: Jason Cooper 
Cc: Guenter Roeck 
Cc: Jason Gunthorpe 
Cc: Uwe Kleine-König 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: isl12022: deprecate use of isl in compatible string for isil

2015-02-17T01:56:02+00:00

"isil" and "isl" prefixes are used at various locations inside the kernel
to reference Intersil corporation.  This patch is part of a series fixing
those locations were "isl" is used in compatible strings to use the now
expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
version).  The old compatible string is kept for backward compatibility.

Signed-off-by: Arnaud Ebalard 
Cc: Rob Herring 
Cc: Pawel Moll 
Cc: Mark Rutland 
Cc: Ian Campbell 
Cc: Kumar Gala 
Cc: Russell King 
Cc: Stephen Warren 
Cc: Thierry Reding 
Cc: Alexandre Courbot 
Cc: Uwe Kleine-Knig 
Cc: Alessandro Zummo 
Cc: Peter Huewe 
Cc: Linus Walleij 
Cc: Mark Brown 
Cc: Arnd Bergmann 
Cc: Darshana Padmadas 
Cc: Grant Likely 
Cc: Rob Landley 
Cc: Jason Cooper 
Cc: Guenter Roeck 
Cc: Jason Gunthorpe 
Cc: Uwe Kleine-König 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-armada38x: add a new RTC driver for recent mvebu SoCs

2015-02-14T05:21:43+00:00

The new mvebu SoCs come with a new RTC driver. This patch adds the
support for this new IP which is currently found in the Armada 38x
SoCs.

This RTC provides two alarms, but only the first one is used in the
driver. The RTC also allows using periodic interrupts.

Signed-off-by: Gregory CLEMENT 
Reviewed-by: Arnaud Ebalard 
Cc: Alessandro Zummo 
Cc: Jason Cooper 
Cc: Andrew Lunn 
Cc: Sebastian Hesselbarth 
Cc: Thomas Petazzoni 
Cc: Ezequiel Garcia 
Cc: Maxime Ripard 
Cc: Boris BREZILLON 
Cc: Lior Amsalem 
Cc: Tawfik Bayouk 
Cc: Nadav Haklai 
Cc: Mark Rutland 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: rtc-ab-b5ze-s3: add sub-minute alarm support

2015-02-14T05:21:43+00:00

Abracon AB-RTCMC-32.768kHz-B5ZE-S3 alarm is only accurate to the minute.
For that reason, UIE mode is currently not supported by the driver.  But
the device provides a watchdog timer which can be coupled with the alarm
mechanism to extend support and provide sub-minute alarm capability.

This patch implements that extension.  More precisely, it makes use of the
watchdog timer for alarms which are less that four minutes in the future
(with second accuracy) and use standard alarm mechanism for other alarms
(with minute accuracy).

Signed-off-by: Arnaud Ebalard 
Cc: Mark Rutland 
Cc: Alessandro Zummo 
Cc: Peter Huewe 
Cc: Linus Walleij 
Cc: Thierry Reding 
Cc: Mark Brown 
Cc: Arnd Bergmann 
Cc: Rob Herring 
Cc: Pawel Moll 
Cc: Stephen Warren 
Cc: Ian Campbell 
Cc: Grant Likely 
Cc: Rob Landley 
Cc: Jason Cooper 
Cc: Guenter Roeck 
Cc: Jason Gunthorpe 
Cc: Kumar Gala 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: add support for Abracon AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip

2015-02-14T05:21:43+00:00

This patch adds support for Abracon AB-RTCMC-32.768kHz-B5ZE-S3
RTC/Calendar module w/ I2C interface.

This support includes RTC time reading and setting, Alarm (1 minute
accuracy) reading and setting, and battery low detection.  The device also
supports frequency adjustment and two timers but those features are
currently not implemented in this driver.  Due to alarm accuracy
limitation (and current lack of timer support in the driver), UIE mode is
not supported.

Signed-off-by: Arnaud Ebalard 
Cc: Mark Rutland 
Cc: Alessandro Zummo 
Cc: Peter Huewe 
Cc: Linus Walleij 
Cc: Thierry Reding 
Cc: Mark Brown 
Cc: Arnd Bergmann 
Cc: Rob Herring 
Cc: Pawel Moll 
Cc: Stephen Warren 
Cc: Ian Campbell 
Cc: Grant Likely 
Cc: Rob Landley 
Cc: Jason Cooper 
Cc: Guenter Roeck 
Cc: Jason Gunthorpe 
Cc: Kumar Gala 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-rk808.c: fix rtc time reading issue

2015-02-14T05:21:43+00:00

After we set the GET_TIME bit, the rtc time can't be read immediately.  We
should wait up to 31.25 us, about one cycle of 32khz.  Otherwise reading
RTC time will return a old time.  If we clear the GET_TIME bit after
setting, the time of i2c transfer is certainly more than 31.25us.

Doug said:

: I think we are safe.  At 400kHz (the max speed of this part) each bit can
: be transferred no faster than 2.5us.  In order to do a valid i2c
: transaction we need to _at least_ write the address of the device and the
: data onto the bus, which is 16 bits.  16 * 2.5us = 40us.  That's above the
: 31.25us

[akpm@linux-foundation.org: tweak comment per review discussion]
Signed-off-by: Chris Zhong 
Reviewed-by: Doug Anderson 
Cc: Sonny Rao 
Cc: Heiko Stübner 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-isl12057.c: constify struct regmap_config

2015-02-14T05:21:43+00:00

The regmap_config struct may be const because it is not modified by the
driver and regmap_init() accepts pointer to const.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds