linux-toradex.git/drivers/rtc, branch v4.1.10

rtc: abx80x: fix RTC write bit

2015-09-29T17:26:11+00:00

commit 5f1b2f77646fc0ef2f36fc554f5722a1381d0892 upstream.

Fix RTC write bit as per application manual

Signed-off-by: Mitja Spes 
Signed-off-by: Alexandre Belloni 
Signed-off-by: Greg Kroah-Hartman

rtc: s5m: fix to update ctrl register

2015-09-29T17:26:11+00:00

commit ff02c0444b83201ff76cc49deccac8cf2bffc7bc upstream.

According to datasheet, the S2MPS13X and S2MPS14X should update write
buffer via setting WUDR bit to high after ctrl register is written.

If not, ALARM interrupt of rtc-s5m doesn't happen first time when i use
tools/testing/selftests/timers/rtctest.c test program and hour format is
used to 12 hour mode in Odroid-XU3 board.

One more issue is the RTC doesn't keep time on Odroid-XU3 board when i
turn on board after power off even if RTC battery is connected. It can
be solved as setting WUDR & RUDR bits to high at the same time after
RTC_CTRL register is written. It's same with condition of only writing
ALARM registers, so this is for only S2MPS14 and we should set WUDR &
A_UDR bits to high on S2MPS13.

I can't find any reasonable description about this like fix from
datasheet, but can find similar codes from rtc driver source of
hardkernel kernel and vendor kernel.

Signed-off-by: Joonyoung Shim 
Reviewed-by: Krzysztof Kozlowski 
Tested-by: Krzysztof Kozlowski 
Signed-off-by: Alexandre Belloni 
Signed-off-by: Greg Kroah-Hartman

rtc: s3c: fix disabled clocks for alarm

2015-09-29T17:26:11+00:00

commit 1fb1c35f56bb6ab4a65920c648154b0f78f634a5 upstream.

The clock enable/disable codes for alarm have been removed from
commit 24e1455493da ("drivers/rtc/rtc-s3c.c: delete duplicate clock
control") and the clocks are disabled even if alarm is set, so alarm
interrupt can't happen.

The s3c_rtc_setaie function can be called several times with 'enabled'
argument having same value, so it needs to check whether clocks are
enabled or not.

Signed-off-by: Joonyoung Shim 
Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Alexandre Belloni 
Signed-off-by: Greg Kroah-Hartman

rtc: snvs: fix wakealarm by call enable_irq_wake earlier

2015-08-03T16:29:01+00:00

commit 119434f44c78df8c4b6d67f835448542a4bd7e91 upstream.

When entering suspend while an wakeup alarm is set, enable_set_wake
should make sure that the RTC interrupt keep being enabled and the
.irq_set_wake for the RTC interrupt get called. However, since the
driver uses the suspend_noirq callback, the call to enable_irq_wake
has been made after disabling the interrupts. While .irq_set_wake
has been called properly, the interrupt remained disabled.

Use the suspend callback to call enable_irq_wake early enough to
ensure the RTC interrupt remains enabled.

Fixes: 7654e9d4fd8f ("drivers/rtc/rtc-snvs: fix suspend/resume")
Signed-off-by: Stefan Agner 
Signed-off-by: Alexandre Belloni 
Signed-off-by: Greg Kroah-Hartman

drivers/rtc/rtc-armada38x.c: remove unused local `flags'

2015-05-15T00:55:51+00:00

Reported-by: Fengguang Wu 
Cc: Gregory CLEMENT 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: armada38x: fix concurrency access in armada38x_rtc_set_time

2015-05-06T00:10:11+00:00

While setting the time, the RTC TIME register should not be accessed.
However due to hardware constraints, setting the RTC time involves
sleeping during 100ms.  This sleep was done outside the critical section
protected by the spinlock, so it was possible to read the RTC TIME
register and get an incorrect value.  This patch introduces a mutex for
protecting the RTC TIME access, unlike the spinlock it is allowed to
sleep in a critical section protected by a mutex.

The RTC STATUS register can still be used from the interrupt handler but
it has no effect on setting the time.

Signed-off-by: Gregory CLEMENT 
Acked-by: Alexandre Belloni 
Acked-by: Andrew Lunn 
Cc: Alessandro Zummo 
Cc: 	[4.0]
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: add rtc-abx80x, a driver for the Abracon AB x80x i2c rtc

2015-05-06T00:10:10+00:00

This is a basic driver for the ultra-low-power Abracon AB x80x series of RTC
chips. It supports in particular, the supersets AB0805 and AB1805.
It allows reading and writing the time, and enables the supercapacitor/
battery charger.

[arnd@arndb.de: abx805 depends on i2c]
[alexandre.belloni@free-electrons.com: renam buffer from date to buf in abx80x_rtc_read_time()]
Signed-off-by: Philippe De Muyter 
Cc: Alessandro Zummo 
Signed-off-by: Alexandre Belloni 
Signed-off-by: Arnd Bergmann 
Cc: Paul Bolle 
Cc: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-at91rm9200.c: make IO endian agnostic

2015-04-17T13:04:12+00:00

Change the __raw IO calls to readl/write_relaxed which makes the driver
endian agnostic to run properly on big endian systems.

Signed-off-by: Ben Dooks 
Cc: Alessandro Zummo 
Cc: Andrew Victor 
Acked-by: Nicolas Ferre 
Acked-by: Jean-Christophe PLAGNIOL-VILLARD 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-s5m.c: allow usage on device type different than main MFD type

2015-04-17T13:04:11+00:00

The RTC driver supports two flavors of S5M devices: S5M8767-like and
S2MPS14-like.

On S2MPS13 and S2MPS14 devices the RTC module is the same so we want to
re-use the existing support of S2MPS14.  However device type was passed
from parent MFD driver in platform data structure.  This way for the
S2MPS13 device the main MFD driver passed device type of 'S2MPS13X'.

Instead decouple detecting of device type between main MFD and RTC driver.
 This allows adding support for other S2MPS14 variations (like S2MPS11 and
S2MPS13) easily by adding to mfd/sec-core.c:

static const struct mfd_cell s2mps13_devs[] = {
	{ .name = "s2mps14-rtc", }
};

Signed-off-by: Krzysztof Kozlowski 
Cc: Alessandro Zummo 
Cc: Kyungmin Park 
Cc: Marek Szyprowski 
Cc: Chanwoo Choi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: use more standard kernel logging styles

2015-04-17T13:04:02+00:00

Neaten the logging a bit by adding #define pr_fmt

Miscellanea:

o Remove __FILE__/__func__ uses
o Coalesce formats adding missing spaces
o Align arguments
o (rtc-cmos) Integrated 2 consecutive messages

Signed-off-by: Joe Perches 
Acked-by: Alexandre Belloni 
Cc: Alessandro Zummo 
Cc: Joshua Kinard 
Cc: Chanwoo Choi 
Reviewed-by: Krzysztof Kozlowski 
Tested-by: Krzysztof Kozlowski 
Cc: Aaro Koskinen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds