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
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
...
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 <kumba@gentoo.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
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>
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 <zyw@rock-chips.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Cc: Heiko Stübner <heiko@sntech.de>
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>
Intended for monitoring and controlling the security features. These bits
are required to bring this unit back to live after a security violation
event was detected. The code to bring it back to live will follow after a
vendor clearance.
Signed-off-by: Juergen Borleis <jbe@pengutronix.de>
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>
Current in-tree users of ISL12057 RTC chip (NETGEAR ReadyNAS 102, 104 and
2120) do not have the IRQ#2 pin of the chip (associated w/ the Alarm1
mechanism) connected to their SoC, but to a PMIC (TPS65251 FWIW). This
specific hardware configuration allows the NAS to wake up when the alarms
rings.
Recently introduced alarm support for ISL12057 relies on the provision of
an "interrupts" property in system .dts file, which previous three users
will never get. For that reason, alarm support on those devices is not
function. To support this use case, this patch adds a new DT property for
ISL12057 (isil,irq2-can-wakeup-machine) to indicate that the chip is
capable of waking up the device using its IRQ#2 pin (even though it does
not have its IRQ#2 pin connected directly to the SoC).
This specific configuration was tested on a ReadyNAS 102 by setting an
alarm, powering off the device and see it reboot as expected when the
alarm rang w/:
# echo `date '+%s' -d '+ 1 minutes'` > /sys/class/rtc/rtc0/wakealarm
# shutdown -h now
As a side note, the ISL12057 remains in the list of trivial devices,
because the property is not per se required by the device to work but can
help handle system w/ specific requirements. In exchange, the new feature
is described in details in a specific documentation file.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Peter Huewe <peter.huewe@infineon.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Darshana Padmadas <darshanapadmadas@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Landley <rob@landley.net>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch adds alarm support to Intersil ISL12057 driver. This allows to
configure the chip to generate an interrupt when the alarm matches current
time value. Alarm can be programmed up to one month in the future and is
accurate to the second.
The patch was developed to support two different configurations: systems
w/ and w/o RTC chip IRQ line connected to the main CPU.
The latter is the one found on current 3 kernel users of the chip for
which support was initially developed (Netgear ReadyNAS 102, 104 and 2120
NAS). On those devices, the IRQ#2 pin of the chip is not connected to the
SoC but to a PMIC. This allows setting an alarm, powering off the device
and have it wake up when the alarm rings. To support that configuration
the driver does the following:
1. it has alarm_irq_enable() function returns -ENOTTY when no IRQ
is passed to the driver.
2. it marks the device as a wakeup source in all cases (whether an
IRQ is passed to the driver or not) to have 'wakealarm' sysfs
entry created.
3. it marks the device has not supporting UIE mode when no IRQ is
passed to the driver (see the commmit message of c9f5c7e7a8)
This specific configuration was tested on a ReadyNAS 102 by setting an
alarm, powering off the device and see it reboot as expected when the
alarm rang.
The former configuration was tested on a Netgear ReadyNAS 102 after some
soldering of the IRQ#2 pin of the RTC chip to a MPP line of the SoC (the
one used usually handles the reset button). The test was performed using
a modified .dts file reflecting this change (see below) and rtc-test.c
program available in Documentation/rtc.txt. This test program ran as
expected, which validates alarm supports, including interrupt support.
As a side note, the ISL12057 remains in the list of trivial devices, i.e.
no specific DT binding being added by this patch: i2c core automatically
handles extraction of IRQ line info from .dts file. For instance, if one
wants to reference the interrupt line for the alarm in its .dts file,
adding interrupt and interrupt-parent properties works as expected:
isl12057: isl12057@68 {
compatible =3D "isil,isl12057";
interrupt-parent =3D <&gpio0>;
interrupts =3D <6 IRQ_TYPE_EDGE_FALLING>;
reg =3D <0x68>;
};
FWIW, if someone is looking for a way to test alarm support on a system on
which the chip IRQ line has the ability to boot the system (e.g. ReadyNAS
102, 104, etc):
# echo 0 > /sys/class/rtc/rtc0/wakealarm
# echo `date '+%s' -d '+ 1 minutes'` > /sys/class/rtc/rtc0/wakealarm
# shutdown -h now
With the commands above, after a minute, the system comes back to life.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Peter Huewe <peter.huewe@infineon.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull EFI updates from Ingo Molnar:
"Main changes:
- Move efivarfs from the misc filesystem section to pseudo filesystem
- Expose firmware platform size in sysfs
- Improve robustness of get_memory_map() by removing assumptions on
the size of efi_memory_desc_t.
- various cleanups and fixes
The biggest risk is the get_memory_map() change, which changes the way
that both the arm64 and x86 EFI boot stub build the early memory map.
There are no known regressions with it at the moment, BYMMV"
* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: Don't look for chosen@0 node on DT platforms
firmware: efi: Remove unneeded guid unparse
efi/libstub: Call get_memory_map() to obtain map and desc sizes
efi: Small leak on error in runtime map code
efi: rtc-efi: Mark UIE as unsupported
arm64/efi: efistub: Apply __init annotation
efi: Expose underlying UEFI firmware platform size to userland
efi: Rename efi_guid_unparse to efi_guid_to_str
efi: Update the URLs for efibootmgr
fs: Make efivarfs a pseudo filesystem, built by default with EFI
Pull timer updates from Ingo Molnar:
"The main changes in this cycle were:
- rework hrtimer expiry calculation in hrtimer_interrupt(): the
previous code had a subtle bug where expiry caching would miss an
expiry, resulting in occasional bogus (late) expiry of hrtimers.
- continuing Y2038 fixes
- ktime division optimization
- misc smaller fixes and cleanups"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hrtimer: Make __hrtimer_get_next_event() static
rtc: Convert rtc_set_ntp_time() to use timespec64
rtc: Remove redundant rtc_valid_tm() from rtc_hctosys()
rtc: Modify rtc_hctosys() to address y2038 issues
rtc: Update rtc-dev to use y2038-safe time interfaces
rtc: Update interface.c to use y2038-safe time interfaces
time: Expose get_monotonic_boottime64 for in-kernel use
time: Expose getboottime64 for in-kernel uses
ktime: Optimize ktime_divns for constant divisors
hrtimer: Prevent stale expiry time in hrtimer_interrupt()
ktime.h: Introduce ktime_ms_delta
Pull EFI updates from Matt Fleming:
" - Move efivarfs from the misc filesystem section to pseudo filesystem,
since that's a more logical and accurate place - Leif Lindholm
- Update efibootmgr URL in Kconfig help - Peter Jones
- Improve accuracy of EFI guid function names - Borislav Petkov
- Expose firmware platform size in sysfs for the benefit of EFI boot
loader installers and other utilities - Steve McIntyre
- Cleanup __init annotations for arm64/efi code - Ard Biesheuvel
- Mark the UIE as unsupported for rtc-efi - Ard Biesheuvel
- Fix memory leak in error code path of runtime map code - Dan Carpenter
- Improve robustness of get_memory_map() by removing assumptions on the
size of efi_memory_desc_t (which could change in future spec
versions) and querying the firmware instead of guessing about the
memmap size - Ard Biesheuvel
- Remove superfluous guid unparse calls - Ivan Khoronzhuk
- Delete unnecessary chosen@0 DT node FDT code since was duplicated
from code in drivers/of and is entirely unnecessary - Leif Lindholm
There's nothing super scary, mainly cleanups, and a merge from Ricardo who
kindly picked up some patches from the linux-efi mailing list while I
was out on annual leave in December.
Perhaps the biggest risk is the get_memory_map() change from Ard, which
changes the way that both the arm64 and x86 EFI boot stub build the
early memory map. It would be good to have it bake in linux-next for a
while.
"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
rtc_hctosys() has a number of y2038 issues.
This patch resolves them by:
- Replace rtc_tm_to_time() with y2038-safe rtc_tm_to_time64()
- Replace do_settimeofday() with y2038-safe do_settimeofday64()
After this patch, it should not have any remaining y2038 issues.
Cc: pang.xunlei <pang.xunlei@linaro.org>
Cc: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
