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path: root/drivers/rtc
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2015-06-25rtc: ds1672, max6900, max8998: Add MODULE_DEVICE_TABLEAxel Lin3-0/+3
The device table is required to load modules based on modaliases. After adding MODULE_DEVICE_TABLE, below entries will be added to modules.alias: alias i2c:ds1672 rtc_ds1672 alias i2c:max6900 rtc_max6900 alias platform:lp3974-rtc rtc_max8998 alias platform:max8998-rtc rtc_max8998 Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Dale Farnsworth <dale@farnsworth.org> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-25rtc: mt6397: fix build on some 32bits platformsAlexandre Belloni1-2/+3
On some !ARM 32bits platforms, the following compilation error happens because of the division on a 64bits value in mtk_rtc_read_time(): drivers/built-in.o: In function `mtk_rtc_read_time': rtc-mt6397.c:(.text+0x265d13f): undefined reference to `__divdi3' rtc-mt6397.c:(.text+0x265d150): undefined reference to `__moddi3' Use div_s64() as done in rtc_time64_to_tm() to solve that. Reported-by: kbuild test robot <fengguang.wu@intel.com> Acked-by: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-25rtc: mc13xxx: fix obfuscated and wrong format stringRasmus Villemoes1-1/+1
According to C99, %2.s means 'print two spaces' (a precision of . without following digits or * means 0). The kernel's printf implementation, however, treats that case as if no precision was given, but relying on that quirk is rather silly. Also, since no - (aka left-justify) flag is given, the field with of 2 would then cause the alarm->enabled case to come out as "o n". Deobfuscate it. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-25rtc: mediatek: Add MT6397 RTC driverTianping Fang3-0/+405
Add Mediatek MT6397 RTC driver Signed-off-by: Tianping Fang <tianping.fang@mediatek.com> Signed-off-by: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-25rtc: xgene: Set hardware dependencyJean Delvare1-0/+1
The rtc-xgene driver is only useful on X-Gene SoC. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Iyappan Subramanian <isubramanian@apm.com> Cc: Keyur Chudgar <kchudgar@apm.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-25rtc: at32ap700x: update author emailHans-Christian Egtvedt1-1/+1
This patch updates the email address of the rtc-at32ap700x driver supported by me to an email account I will use on a more regular basis in the future. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: imxdi: when locked, do not fail silentlyJuergen Borleis1-3/+24
If the DryICE unit is locked it is impossible to set the time. Provide an error message for this case. Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Signed-off-by: Robert Schwebel <rsc@pengutronix.de> [rsc: got NDA clearance from Freescale] Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: imxdi: monitor a security violation at runtimeJuergen Borleis1-2/+19
Maybe the unit enters the hardware related state at runtime and not at system boot time (after a power cycle). Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Signed-off-by: Robert Schwebel <rsc@pengutronix.de> [rsc: got NDA clearance from Freescale] Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: imxdi: add the unit recovery codeJuergen Borleis1-38/+279
This code is required to recover the unit from a security violation. Hopefully this code can recover the unit from a hardware related invalid state as well. Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Signed-off-by: Robert Schwebel <rsc@pengutronix.de> [rsc: got NDA clearance from Freescale] Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: imxdi: add some background info about the states the machine can be inJuergen Borleis1-0/+43
Document the i.MX DryIce machine states. Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Signed-off-by: Robert Schwebel <rsc@pengutronix.de> [rsc: got NDA clearance from Freescale] Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: imxdi: avoid the __raw* register access functionsJuergen Borleis1-22/+22
Be independent of the endianness of the kernel. Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: s3c: Integrate Exynos3250 into S3C6410Krzysztof Kozlowski1-13/+1
There are now no differences between RTC on Exynos3250 and S3C6410. Merge everything into one so duplicated code could be removed. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: interface: Remove unused return value from rtc_timer_cancel()Krzysztof Kozlowski1-3/+1
The rtc_timer_cancel() always returns 0 and cannot fail (calls only other void-returning functions). Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: mxc: Constify platform_device_idKrzysztof Kozlowski1-1/+1
The platform_device_id is not modified by the driver and core uses it as const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: hid-sensor-time: Constify platform_device_idKrzysztof Kozlowski1-1/+1
The platform_device_id is not modified by the driver and core uses it as const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: ab8500: Constify platform_device_idKrzysztof Kozlowski1-1/+1
The platform_device_id is not modified by the driver and core uses it as const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19rtc: efi: Update author email addressdann frazier1-2/+2
I'm no longer employed by HP. Signed-off-by: dann frazier <dannf@dannf.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-05-15drivers/rtc/rtc-armada38x.c: remove unused local `flags'Andrew Morton1-1/+1
Reported-by: Fengguang Wu <fengguang.wu@gmail.com> Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-06rtc: armada38x: fix concurrency access in armada38x_rtc_set_timeGregory CLEMENT1-12/+12
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 <gregory.clement@free-electrons.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: <stable@vger.kernel.org> [4.0] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-06rtc: add rtc-abx80x, a driver for the Abracon AB x80x i2c rtcPhilippe De Muyter3-0/+318
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 <phdm@macqel.be> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-at91rm9200.c: make IO endian agnosticBen Dooks1-2/+2
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 <ben.dooks@codethink.co.uk> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Andrew Victor <linux@maxim.org.za> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-s5m.c: allow usage on device type different than main MFD typeKrzysztof Kozlowski1-4/+6
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 <k.kozlowski@samsung.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17rtc: use more standard kernel logging stylesJoe Perches13-24/+49
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 <joe@perches.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Joshua Kinard <kumba@gentoo.org> Cc: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-hym8563.c: fix swapped enable/disable of clockout control bitHeiko Stübner1-5/+5
The hym8563 datasheet describes the clock output control-bit as "when set to logic 0, the square wave output is enable, when set to logic 1, the CLKOUT output is inhibited". But in reality the setting is exactly opposite. Before now, the clock output was not really used, but on the rk3288 soc this generated clock is used to supply the temperature sensor block and the swapped bit value prevented it from working. With the corrected value, the tsadc now reports correct values. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> 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>
2015-04-17drivers/rtc/rtc-s3c.c: remove one superfluous rtc_valid_tm() checkKrzysztof Kozlowski1-3/+1
s3c_rtc_gettime() already returns the result of rtc_valid_tm() on the obtained time so get rid of another call to rtc_valid_tm(). Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-omap.c: use module_platform_driverLokesh Vutla1-2/+3
module_platform_driver_probe() prevents driver from requesting probe deferral. So using module_platform_drive() to support probe deferral. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Cc: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/Kconfig: update Kconfig for OMAP RTCLokesh Vutla1-3/+3
RTC is present in AM43xx and DRA7xx also. Updating the Kconfig to depend on ARCH_OMAP or ARCH_DAVINCI Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Cc: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-omap.c: unlock and lock rtc registers before and after ↵Lokesh Vutla1-11/+52
register writes RTC module contains a kicker mechanism to prevent any spurious writes from changing the register values. This mechanism requires two MMR writes to the KICK0 and KICK1 registers with exact data values before the kicker lock mechanism is released. Currently the driver release the lock in the probe and leaves it enabled until the rtc driver removal. This eliminates the idea of preventing spurious writes when RTC driver is loaded. So implement rtc lock and unlock functions before and after register writes. This is as advised by Paul to implement lock and unlock functions in the driver and not to unlock and leave it in probe. The same discussion can be seen here: http://www.mail-archive.com/linux-omap%40vger.kernel.org/msg111588.html Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Cc: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-s3c.c: fix failed first read of RTC timeKrzysztof Kozlowski1-16/+16
Initialize the device time (if it is wrong) before registering RTC device to fix following error message during rtc-s3c probe: [ 2.215414] rtc (null): read_time: fail to read [ 2.216322] s3c-rtc 10070000.rtc: rtc core: registered s3c as rtc1 Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17rtc: hctosys: use function name in the error logAaro Koskinen1-1/+1
Use function name in the error log instead of __FILE__. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> 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>
2015-04-17drivers/rtc/interface.c: __rtc_read_time: reduce log levelAaro Koskinen1-2/+3
__rtc_read_time logs should be debug logs instead of error logs. For example, when the RTC clock is not set, it's not really useful to print a kernel error log every time someone tries to read the clock: ~ # hwclock -r [ 604.508263] rtc rtc0: read_time: fail to read hwclock: RTC_RD_TIME: Invalid argument If there's a real error, it's likely that lower level or higher level code will tell it anyway. Make these logs debug logs, and also print the error code for the read failure. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> 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>
2015-04-17drivers/rtc/class.c: initialize rtc name earlyAaro Koskinen1-3/+3
In some error cases RTC name is used before it is initialized: rtc-rs5c372 0-0032: clock needs to be set rtc-rs5c372 0-0032: rs5c372b found, 24hr, driver version 0.6 rtc (null): read_time: fail to read rtc-rs5c372 0-0032: rtc core: registered rtc-rs5c372 as rtc0 Fix by initializing the name early. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> 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>
2015-04-17drivers/rtc/rtc-s5m.c: add support for S2MPS13 RTCKrzysztof Kozlowski1-1/+19
The S2MPS13 RTC is almost the same as S2MPS14. The differences when updating alarm are: 1. Set WUDR+AUDR field instead of WUDR+RUDR. 2. Clear the AUDR field later (it is not auto-cleared). Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> 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>
2015-04-17rtc: driver for Conexant Digicolor CX92755 on-chip RTCBaruch Siach3-0/+238
Add driver for the RTC hardware block on the Conexant CX92755 SoC, from the Digicolor series of SoCs. Tested on the Equinox evaluation board for the CX92755 chip. [akpm@linux-foundation.org: build command arrays at compile-time] Signed-off-by: Baruch Siach <baruch@tkos.co.il> 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>
2015-04-17drivers/rtc/rtc-hym8563.c: return clock rate even when clock is disabledHeiko Stuebner1-1/+1
When the clock is disabled, do not return a rate of 0 but instead return the rate the clock will be running at after it gets enabled. This prevents problems when the core clock code is trying to determine a suitable rate, while the clock is still off. Signed-off-by: Heiko Stuebner <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>
2015-04-17drivers/rtc/rtc-da9052.c: register ability of alarm to wake device from suspendAdam Ward1-0/+2
Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> 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>
2015-04-17drivers/rtc/rtc-da9052.c: add constraints to set valid yearAdam Ward1-0/+8
Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> 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>
2015-04-17drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning ↵Adam Ward1-21/+66
partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> 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>
2015-04-17drivers/rtc/rtc-ds1685.c: fix sparse warningsJoshua Kinard1-2/+2
Fix two minor sparse warnings: CHECK drivers/rtc/rtc-ds1685.c drivers/rtc/rtc-ds1685.c:2178:1: warning: function 'ds1685_rtc_poweroff' with external linkage has definition drivers/rtc/rtc-ds1685.c:802:23: warning: Using plain integer as NULL pointer Fixes: aaaf5fbf56f1 ("rtc: add driver for DS1685 family of real time clocks") Signed-off-by: Joshua Kinard <kumba@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-ds1685.c: remove .owner assignment from platform_driverJoshua Kinard1-1/+0
The rtc driver core now sets the platform_driver 'owner' property, so remove the assignment from the DS1685 driver. Fixes: aaaf5fbf56f1: "rtc: add driver for DS1685 family of real time clocks" Signed-off-by: Joshua Kinard <kumba@gentoo.org> Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17drivers/rtc/rtc-ab-b5ze-s3.c: constify struct regmap_configKrzysztof Kozlowski1-1/+1
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 <k.kozlowski@samsung.com> 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>
2015-04-17drivers/rtc/rtc-s3c.c: delete duplicate clock controlChanwoo Choi1-124/+39
The current functions in s3c-rtc driver execute clk_enable/disable() to control clocks and some functions execute s3c_rtc_alarm_clk_enable() unnecessarily. So this patch deletes the duplicate clock control and spilts s3c_rtc_alarm_clk_enable() out as s3c_rtc_enable_clk()/s3c_rtc_disable_clk() to improve readability. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kukjin Kim <kgene@kernel.org> Cc: Inki Dae <inki.dae@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17rtc: hctosys: do not treat lack of RTC device as errorFloris Bos1-1/+1
When using device trees on the ARM platform, it is not certain at compile time whether or not the system will have a RTC. If one enables CONFIG_HCTOSYS just in case the system booted has a RTC, and it turns out not to be, this will result in a big fat "unable to open rtc device" error being printed to console, even when "quiet" is set in the kernel cmdline. Fix this by outputting the message with loglevel info instead. Signed-off-by: Floris Bos <bos@je-eigen-domein.nl> 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>
2015-04-17drivers/rtc/rtc-x1205.c: use sign_extend32() for sign extensionMartin Kepplinger1-2/+2
Despite its name, sign_extend32() is safe to use for 8 bit types too. (See https://lkml.org/lkml/2015/1/18/289). Signed-off-by: Martin Kepplinger <martink@posteo.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>
2015-04-17drivers/rtc/rtc-em3027.c: add device tree supportPeter Robinson1-0/+11
Set the of_match_table for this driver so that devices can be described in the device tree. This device is used in the Trimslice and is already defined in the Trimslice device tree. Signed-off-by: Peter Robinson <pbrobinson@gmail.com> Cc: Mike Rapoport <mike@compulab.co.il> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17rtc: stmp3xxx: use optional crystal in low power statesUwe Kleine-König1-6/+60
The rtc's status register allows to determine if a 32k crystal is connected to keep the rtc running in low power states provided the corresponding fuse bits were blown correctly during production. (In case they were not, the right frequency can be stated in the device tree.) If there is no such crystal available force the 24 MHz XTAL clock to keep running to retain the right date and time. Otherwise use the crystal to save some power. It would be nice to only switch to the crystal when the XTAL clock is about to be disabled and keep the crystal off when unneeded because XTAL is always on while the chip is powered on. But as sudden power loss isn't detectable this is not save. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@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>
2015-04-17drivers/rtc/rtc-pcf8563.c: simplify return from functionRobert Kmiec1-6/+1
This commit does not change any logic here. It just makes the code easier to read. This is how it looked like: If err != 0 return err; else return 0; Signed-off-by: Robert Kmiec <robert.r.kmiec@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16rtc: remove use of seq_printf return valueJoe Perches4-28/+34
The seq_printf return value, because it's frequently misused, will eventually be converted to void. See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to seq_has_overflowed() and make public") Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-15Merge tag 'mfd-for-linus-4.1' of ↵Linus Torvalds1-60/+0
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Changes to existing drivers: - Rename child driver [axp288_battery => axp288_fuel_gauge]; axp20x - Rename child driver [max77693-flash => max77693-led]; max77693 - Error handling fixes; intel_soc_pmic - GPIO tweaking; intel_soc_pmic - Remove non-DT code; vexpress-sysreg, tc3589x - Remove unused/legacy code; ti_am335x_tscadc, rts5249, rtsx_gops, rtsx_pcr, rtc-s5m, sec-core, max77693, menelaus, wm5102-tables - Trivial fixups; rtsx_pci, da9150-core, sec-core, max7769, max77693, mc13xxx-core, dln2, hi6421-pmic-core, rk808, twl4030-power, lpc_ich, menelaus, twl6040 - Update register/address values; rts5227, rts5249 - DT and/or binding document fixups; arizona, da9150, mt6397, axp20x, qcom-rpm, qcom-spmi-pmic - Couple of trivial core Kconfig fixups - Remove use of seq_printf return value; ab8500-debugfs - Remove __exit markups; menelaus, tps65010 - Fix platform-device name collisions; mfd-core New drivers/supported devices: - Add support for wm8280/wm8281 into arizona - Add support for COMe-cBL6 into kempld-core - Add support for rts524a and rts525a into rts5249 - Add support for ipq8064 into qcom_rpm - Add support for extcon into axp20x - New MediaTek MT6397 PMIC driver - New Maxim MAX77843 PMIC dirver - New Intel Quark X1000 I2C-GPIO driver - New Skyworks SKY81452 driver" * tag 'mfd-for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits) mfd: sec: Fix RTC alarm interrupt number on S2MPS11 mfd: wm5102: Remove registers for output 3R from readable list mfd: tps65010: Remove incorrect __exit markups mfd: devicetree: bindings: Add Qualcomm RPM regulator subnodes mfd: axp20x: Add support for extcon cell mfd: lpc_ich: Sort IDs mfd: twl6040: Remove wrong and unneeded "platform:twl6040" modalias mfd: qcom-spmi-pmic: Add specific compatible strings for Qualcomm's SPMI PMIC's mfd: axp20x: Fix duplicate const for model names mfd: menelaus: Use macro for magic number mfd: menelaus: Drop support for SW controller VCORE mfd: menelaus: Delete omap_has_menelaus mfd: arizona: Correct type of gpio_defaults mfd: lpc_ich: Sort IDs mfd: Fix a typo in Kconfig mfd: qcom_rpm: Add support for IPQ8064 mfd: devicetree: qcom_rpm: Document IPQ8064 resources mfd: core: Fix platform-device name collisions mfd: intel_quark_i2c_gpio: Don't crash if !DMI dt-bindings: Add vendor-prefix for X-Powers ...
2015-04-14Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid Pull HID updates from Jiri Kosina: - quite a few firmware fixes for RMI driver by Andrew Duggan - huion and uclogic drivers have been substantially overlaping in functionality laterly. This redundancy is fixed by hid-huion driver being merged into hid-uclogic; work done by Benjamin Tissoires and Nikolai Kondrashov - i2c-hid now supports ACPI GPIO interrupts; patch from Mika Westerberg - Some of the quirks, that got separated into individual drivers, have historically had EXPERT dependency. As HID subsystem matured (as well as the individual drivers), this made less and less sense. This dependency is now being removed by patch from Jean Delvare - Logitech lg4ff driver received a couple of improvements for mode switching, by Michal Malý - multitouch driver now supports clickpads, patches by Benjamin Tissoires and Seth Forshee - hid-sensor framework received a substantial update; namely support for Custom and Generic pages is being added; work done by Srinivas Pandruvada - wacom driver received substantial update; it now supports i2c-conntected devices (Mika Westerberg), Bamboo PADs are now properly supported (Benjamin Tissoires), much improved battery reporting (Jason Gerecke) and pen proximity cleanups (Ping Cheng) - small assorted fixes and device ID additions * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (68 commits) HID: sensor: Update document for custom sensor HID: sensor: Custom and Generic sensor support HID: debug: fix error handling in hid_debug_events_read() Input - mt: Fix input_mt_get_slot_by_key HID: logitech-hidpp: fix error return code HID: wacom: Add support for Cintiq 13HD Touch HID: logitech-hidpp: add a module parameter to keep firmware gestures HID: usbhid: yet another mouse with ALWAYS_POLL HID: usbhid: more mice with ALWAYS_POLL HID: wacom: set stylus_in_proximity before checking touch_down HID: wacom: use wacom_wac_finger_count_touches to set touch_down HID: wacom: remove hardcoded WACOM_QUIRK_MULTI_INPUT HID: pidff: effect can't be NULL HID: add quirk for PIXART OEM mouse used by HP HID: add HP OEM mouse to quirk ALWAYS_POLL HID: wacom: ask for a in-prox report when it was missed HID: hid-sensor-hub: Fix sparse warning HID: hid-sensor-hub: fix attribute read for logical usage id HID: plantronics: fix Kconfig default HID: pidff: support more than one concurrent effect ...
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