- 17 Apr, 2015 40 commits
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Lokesh Vutla authored
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>
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Lokesh Vutla authored
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.htmlSigned-off-by:
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Krzysztof Kozlowski authored
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:
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Aaro Koskinen authored
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:
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Aaro Koskinen authored
__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:
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Aaro Koskinen authored
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:
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Krzysztof Kozlowski authored
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:
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Alexandre Belloni authored
I've noticed that most of the patches for the RTC subsystem are currently either taken directly by Andrew or going through another maintainer's tree, quite often without an Acked-by or Reviewed-by tag. I'd like to propose myself as the RTC subsystem co-maintainer, to mainly help Alessandro reviewing incoming patches and maintain a subsystem tree to avoid having the RTC patches going through trees when they have no particular dependencies. Signed-off-by:
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Baruch Siach authored
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:
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Baruch Siach authored
Add a device tree binding documentation to the Real Time Clock hardware block on the Conexant CX92755 SoC. The CX92755 is from the Digicolor SoCs series. Other SoCs in that series may share the same hardware block. Signed-off-by:
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Heiko Stuebner authored
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:
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Adam Ward authored
Signed-off-by:
Adam Ward <adam.ward.opensource@diasemi.com> Tested-by:
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Adam Ward authored
Signed-off-by:
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Adam Ward authored
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:
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Joshua Kinard authored
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: aaaf5fbf ("rtc: add driver for DS1685 family of real time clocks") Signed-off-by:
Joshua Kinard <kumba@gentoo.org> Signed-off-by:
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Joshua Kinard authored
The rtc driver core now sets the platform_driver 'owner' property, so remove the assignment from the DS1685 driver. Fixes: aaaf5fbf: "rtc: add driver for DS1685 family of real time clocks" Signed-off-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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Krzysztof Kozlowski authored
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:
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Chanwoo Choi authored
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:
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Floris Bos authored
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:
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Martin Kepplinger authored
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:
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Peter Robinson authored
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:
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Uwe Kleine-König authored
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:
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Robert Kmiec authored
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:
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Andrey Ryabinin authored
It might be annoying to constantly see this: scripts/Makefile.kasan:16: Cannot use CONFIG_KASAN: -fsanitize=kernel-address is not supported by compiler while performing allmodconfig/allyesconfig build tests. Disable this warning if CONFIG_COMPILE_TEST=y. Signed-off-by:
Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by:
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Rasmus Villemoes authored
sprintf() reliably returns the number of characters printed, so we don't need to ask strlen() where we are. Also replace calling sprintf("%02x") in a loop with the much simpler bin2hex(). [akpm@linux-foundation.org: it's odd to include kernel.h after everything else] Signed-off-by:Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Joe Perches authored
Since commit 1f65f947 ("checkpatch: add checks for question mark and colon spacing") back in 2008, checkpatch has reported false positive for asm volatile uses of "::" checkpatch thinks colons should always have spaces around it. Add an exception for colons with colons on either side for this valid asm volatile (and c++) use. Signed-off-by:
Joe Perches <joe@perches.com> Reported-by:
Yehuda Yitschak <yehuday@marvell.com> Signed-off-by:
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Joe Perches authored
If a patch touches multiple files, the --fix and --fix-inplace option doesn't keep the proper line count and makes the new patch file not able to be applied via bad offset line numbers when lines are added or deleted by the --fix option. Dunno how that extra backslash snuck in there. Signed-off-by:
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Andy Lutomirski authored
ENOSYS is the mechanism used by user code to detect whether the running kernel implements a given system call. It should not be returned by anything except an unimplemented system call. Unfortunately, it is rather frequently used in the kernel to indicate that various new functions of existing system calls are not implemented. This should be discouraged. Improve the comment in errno.h to help clarify ENOSYS's purpose. Signed-off-by:
Andy Lutomirski <luto@amacapital.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Andy Lutomirski authored
ENOSYS means that a nonexistent system call was called. We have a bad habit of using it for things like invalid operations on otherwise valid syscalls. We should avoid this in new code. Pervasive incorrect usage of ENOSYS came up at the kernel summit ABI review discussion. Let's see if checkpatch can help. I'll submit a separate patch for include/uapi/asm-generic/errno.h. Signed-off-by:
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Joe Perches authored
const objects shouldn't be __read_mostly. They are read-only. Marking these objects as __read_mostly causes section conflicts with LTO linking. So add a test to try to avoid this issue. Signed-off-by:
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Sam Bobroff authored
Code such as: x = timercmp(&now, &end, <); Will currently trigger a checkpatch error. e.g. ERROR: spaces required around that '<' This is because the "Ignore operators passed as parameters" check looks only for a comma following the operator. Improve the check by also looking for a close parenthesis. Signed-off-by:Sam Bobroff <sam.bobroff@au1.ibm.com> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Joe Perches authored
Add a test for sizeof(foo)/sizeof(foo[0]) that could be ARRAY_SIZE(foo). Signed-off-by:
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Joe Perches authored
Add another struct to the list of normally const struct types Signed-off-by:
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Joe Perches authored
There are #defines with long string constants like: #define foo "some really long string > 80 columns" Add a long line exception for them. Miscellanea: Use the $String variable for slightly better readability Signed-off-by:
Madalin-Cristian Bucur <madalin.bucur@freescale.com> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by:
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Joe Perches authored
Commit messages lines are sometimes overly long. Suggest line wrapping at 75 columns so the default git commit log indentation of 4 plus the commit message text still fits on an 80 column screen. Add a checkpatch test for long commit messages lines too. Signed-off-by:
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Fabian Frederick authored
Currently checkpatch warns when asm/file.h is included and linux/file.h exists. That conversion can be made when linux/file.h includes asm/file.h which is not always the case.(See signal.h) Signed-off-by:
Fabian Frederick <fabf@skynet.be> Cc: Andy Whitcroft <apw@canonical.com> Acked-by:
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Joe Perches authored
Using 'const <type> const *' is generally meant to be written 'const <type> * const'. Add a test for the miswritten form. Signed-off-by:
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Joe Perches authored
Add a few conditions to the test to find return (ERRNO); Make the output message a bit less cryptic too. Signed-off-by:
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Joe Perches authored
Currently checkpatch will fuss if one uses world writable settings in debugfs files and DEVICE_ATTR uses by testing S_IWUGO but not testing S_IWOTH, S_IRWXUGO or S_IALLUGO. Extend the check to catch all cases exporting world writable permissions including octal values. [akpm@linux-foundation.org: remove stray $] Signed-off-by:
Nicholas Mc Guire <hofrat@osadl.org> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Joe Perches authored
If a codespell dictionary exists, use it if desired. default is off, maybe it could be turned on later. codespell's dictionary format allows multiple possible corrections, ignore that for now and only use the first suggestion. Also add \b to spelling test so that consecutive misspelled words are found properly. Signed-off-by:
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