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path: root/drivers/rtc
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2018-09-28rtc: ds1685: use rtc_add_groupAlexandre Belloni
Use rtc_add_group to add the sysfs group in a race free manner. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: ds1685: use generic nvmemAlexandre Belloni
Instead of adding a binary sysfs attribute from the driver, use the core to register an nvmem device. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: ds1685: drop RTC_DS1685_PROC_REGSAlexandre Belloni
/proc is not the correct ABI to display debugging info. Remove RTC_DS1685_PROC_REGS as the driver hasn't seen any real development since it was included. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: test: Switch to SPDX identifierAlexandre Belloni
Replace the license boilerplate by an SPDX identifier Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: test: make license text and module license match.Alexandre Belloni
The license text is specifying GPL v2 only but the MODULE_LICENSE is set to GPL which means GNU Public License v2 or later. When MODULE_LICENSE and boiler plate does not match, go for boiler plate license. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: tx4939: fixup nvmem name and register sizeAlexandre Belloni
The default word_size and stride of 1 are correct for the tx4939. Also fix the nvmem folder name. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: isl1208: don't include core header fileAlexandre Belloni
The core header file is reserved for the core, stop including it. Also reorder includes alphabetically. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: move rtc_add_group/s definitionsAlexandre Belloni
Move rtc_add_group and rtc_add_groups definition to rtc.h that is available for all RTC drivers. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: reorder Makefile entriesAlexandre Belloni
A few entries are not placed correctly, reorder them. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: ds1307: add frequency_test_enable attribute on m41txxGiulio Benetti
On m41txx you can enable open-drain OUT pin to check if offset is ok. Enabling OUT pin with frequency_test_enable attribute, OUT pin will tick 512 times faster than 1s tick base. Enable or Disable FT bit on CONTROL register if freq_test is 1 or 0. Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: ds1307: add offset sysfs for mt41txx chips.Giulio Benetti
m41txx chips can hold a calibration value to get correct clock bias. Add offset handling (ranging between -63ppm and 126ppm) via sysfs. Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-28rtc: isl1208: avoid possible sysfs raceAlexandre Belloni
Use rtc_add_group to add the common sysfs group to avoid a possible race condition. [Denis.Osterland@diehl.com: use to_i2c_client(dev->parent)] Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> The move of atrim, dtrim usr sysfs properties from i2c device to rtc device require to access them via dev->parent. This patch also aligns timestamp0.
2018-09-13rtc: remove irq_task from kerneldocAlexandre Belloni
Stale mentions of irq_task are left in the kerneldoc after its removal. Remove them. There is still one indirect mention left but commit 3c8bb90efb6e ("rtc: Fix hrtimer deadlock") can probably be reverted now. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-13rtc: unexport non devm managed registrationAlexandre Belloni
Ensure the non managed version of the un/registration functions is not used anymore. No driver is using it anymore and they should not be necessary. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-12rtc: abx80x: add basic watchdog supportJeremy Gebben
The abx804 and abx805 chips have support for a simple watchdog function that can trigger an external reset. Signed-off-by: Jeremy Gebben <jgebben@sweptlaser.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-12rtc: abx80x: use a 'priv' struct for client dataJeremy Gebben
This will allow additional data to be tracked, for future improvements. Signed-off-by: Jeremy Gebben <jgebben@sweptlaser.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-11rtc: pl031: switch to devm_rtc_allocate_device/rtc_register_deviceAlexandre Belloni
Switch to devm_rtc_allocate_device to simplify the erro and driver removal paths. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-11rtc: pl030: fix possible race conditionAlexandre Belloni
The IRQ is requested before the struct rtc is allocated and registered, but this struct is used in the IRQ handler. This may lead to a NULL pointer dereference. Switch to devm_rtc_allocate_device/rtc_register_device to allocate the rtc before requesting the IRQ. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-11rtc: mt6397: fix possible race conditionAlexandre Belloni
The IRQ is requested before the struct rtc is allocated and registered, but this struct is used in the IRQ handler. This may lead to a NULL pointer dereference. Switch to devm_rtc_allocate_device/rtc_register_device to allocate the rtc before requesting the IRQ. Acked-by: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-31rtc: mrst: remove set but not used variable 'valid'YueHaibing
Fixes gcc '-Wunused-but-set-variable' warning: drivers/rtc/rtc-mrst.c: In function 'mrst_procfs': drivers/rtc/rtc-mrst.c:264:29: warning: variable 'valid' set but not used [-Wunused-but-set-variable] unsigned char rtc_control, valid; Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: rv8803: add Epson RX8803 supportAlexandre Belloni
The Epson rx8803 is mostly similar to the Microcrystal RV8803 but the size of the offset register is 4 bits vs 6 bits but it has a configurable temperature compensation. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: rv8803: fix the rv8803 id in the OF tableAlexandre Belloni
The ID for RV8803 must be rv_8803 Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: sysfs: fix NULL check in rtc_add_groups()Dan Carpenter
devm_kcalloc() returns NULL, it never returns error pointers. In the current code we would return PTR_ERR(NULL) which is success, instead of returning the -ENOMEM error code. Fixes: a0a1a1ba3032 ("rtc: sysfs: facilitate attribute add to rtc device") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: sun6i: Use struct_size() in kzalloc()Gustavo A. R. Silva
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: jz4740: Drop dependency on MACH_INGENICPaul Cercueil
Depending on MACH_INGENIC prevent us from creating a generic kernel that works on more than one MIPS board. Instead, we just depend on MIPS being set. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: omap: Cut down the shutdown time from 2 seconds to 1 secKeerthy
Cut down the shutdown time from 2 seconds to 1 sec. In case of roll over try again. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: omap: use of_device_is_system_power_controller functionKeerthy
Use of_device_is_system_power_controller instead of manually reading the system-power-controller property from the device tree node. Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-27rtc: rtc-mrst: Replace mdelay() with msleep() in mrst_read_time()Jia-Ju Bai
mrst_read_time() is never called in atomic context. It calls mdelay() to busily wait, which is not necessary. mdelay() can be replaced with msleep(). This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-20Merge tag 'rtc-4.19' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "It is now possible to add custom sysfs attributes while avoiding a possible race condition. Unused code has been removed resulting in a nice reduction of the code base. And more drivers have been switched to SPDX by their maintainers. Summary: Subsystem: - new helpers to add custom sysfs attributes - struct rtc_task removal along with rtc_irq_[un]register() - rtc_irq_set_state and rtc_irq_set_freq are not exported anymore Drivers: - armada38x: reset after rtc power loss - ds1307: now supports m41t11 - isl1208: now supports isl1219 and tamper detection - pcf2127: internal SRAM support" * tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits) rtc: ds1307: simplify hwmon config rtc: s5m: Add SPDX license identifier rtc: maxim: Add SPDX license identifiers rtc: isl1219: add device tree documentation rtc: isl1208: set ev-evienb bit from device tree rtc: isl1208: Add "evdet" interrupt source for isl1219 rtc: isl1208: add support for isl1219 with tamper detection rtc: sysfs: facilitate attribute add to rtc device rtc: remove struct rtc_task char: rtc: remove task handling rtc: pcf85063: preserve control register value between stop and start rtc: sh: remove unused variable rtc_dev rtc: unexport rtc_irq_set_* rtc: simplify rtc_irq_set_state/rtc_irq_set_freq rtc: remove irq_task and irq_task_lock rtc: remove rtc_irq_register/rtc_irq_unregister rtc: sh: remove dead code rtc: sa1100: don't set PIE frequency rtc: ds1307: support m41t11 variant rtc: ds1307: fix data pointer to m41t0 ...
2018-08-16rtc: ds1307: simplify hwmon configHeiner Kallweit
We don't have to define an extra config symbol, IS_REACHABLE does what we need. And having this config symbol just to save the few bytes of hwmon support on non-DS3231 chips isn't worth it IMO (especially as the symbol is set per default). Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-14rtc: s5m: Add SPDX license identifierKrzysztof Kozlowski
Replace GPL v2.0+ license statement with SPDX license identifier. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-14rtc: maxim: Add SPDX license identifiersKrzysztof Kozlowski
Replace GPL v2.0+ license statements with SPDX license identifiers. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-14rtc: isl1208: set ev-evienb bit from device treeDenis Osterland
Add support to disable event in pull-up. Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-14rtc: isl1208: Add "evdet" interrupt source for isl1219Denis Osterland
Add support for "evdet" named interrupt source. The check if i2c client irq matches evdet irq is needed for the case that there is only one interrupt named "evdet". In this case i2c client code handles this like an unnamed interrupt souce and assigns the value. Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com> Reviewed-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-14rtc: isl1208: add support for isl1219 with tamper detectionMichael Grzeschik
We add support for the ISL1219 chip that got an integrated tamper detection function. This patch implements the feature by adding an additional timestamp0 file to sysfs device path. This file contains seconds since epoch, if an event occurred, or is empty, if none occurred. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-14rtc: sysfs: facilitate attribute add to rtc deviceDenis Osterland
This patches addresses following problem: rtc_allocate_device devm_device_add_group <-- kernel oops / null pointer, because sysfs entry does not yet exist rtc_register_device rc = devm_device_add_group if (rc) return rc; <-- forbidden to return error code after device register This patch adds rtc_add_group(s) functions. The functions store the sum of attribute groups as device resource. Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-08-02rtc: remove struct rtc_taskAlexandre Belloni
Include rtc_task members directly in rtc_timer member. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-28rtc: pcf85063: preserve control register value between stop and startAlvin Šipraga
Fix a bug that caused the Control_1 register to get zeroed whenever the RTC time is set. The problem occurred between stopping and starting the RTC clock, wherein the return value of a successful I2C write function would get written to the register. Also update variables of the start and stop functions to be more consistent with the rest of the driver. Signed-off-by: Alvin Šipraga <alvin@airtame.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-27rtc: sh: remove unused variable rtc_devAnders Roxell
When building rtc-sh, rtc_dev isn't used in function __sh_rtc_periodic. drivers/rtc/rtc-sh.c: In function ‘__sh_rtc_periodic’: drivers/rtc/rtc-sh.c:146:21: warning: unused variable ‘rtc_dev’ [-Wunused-variable] struct rtc_device *rtc_dev = rtc->rtc_dev; ^~~~~~~ Remove the declaration of rtc_dev to dispose the warning. Fixes: ec623ff014c4 ("rtc: sh: remove dead code") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-26rtc: unexport rtc_irq_set_*Alexandre Belloni
Make the rtc_irq_set interface internale to the RTC subsystem. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-26rtc: simplify rtc_irq_set_state/rtc_irq_set_freqAlexandre Belloni
The PIE doesn't handle tasks anymore, remove the pointer from the interface. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-26rtc: remove irq_task and irq_task_lockAlexandre Belloni
There is no way to set a periodic task anymore, remove task pointer and lock. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-26rtc: remove rtc_irq_register/rtc_irq_unregisterAlexandre Belloni
The rtc_irq_* interface is not used from outside the RTC subsytem since 2016. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-26rtc: sh: remove dead codeAlexandre Belloni
Since commit 80d4bb515b78 ("RTC: Cleanup rtc_class_ops->irq_set_state") and commit 696160fec162 ("RTC: Cleanup rtc_class_ops->irq_set_freq()"), sh_rtc_irq_set_state and sh_rtc_irq_set_freq are never called. Remove them along with task handling. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-25rtc: sa1100: don't set PIE frequencyAlexandre Belloni
It doesn't make sense to set the PIE frequency from the driver. Let userspace do its job. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-16rtc: ds1307: support m41t11 variantGiulio Benetti
The m41t11 variant is very similar to the already supported m41t00 and m41t0, but it has also 56 bytes of NVRAM. Add it to driver taking into account NVRAM section. Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-16rtc: ds1307: fix data pointer to m41t0Giulio Benetti
data field points to m41t00, instead it should point to m41t0. Driver works correctly because on both cases(m41t0 and m41t00) chip_desc are equal. Point to right enum m41t0 instead of m41t00. Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-16Merge 4.18-rc5 into char-misc-nextGreg Kroah-Hartman
We want the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-13rtc: use ktime_get_real_ts64() instead of getnstimeofday64()Arnd Bergmann
getnstimeofday64() is just a wrapper around the ktime accessor, so we should use that directly. I considered using ktime_get_boottime_ts64() (to avoid leap second problems) or ktime_get_real_seconds() (to simplify the calculation, but in the end concluded that the existing interface is probably the most appropriate in this case. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-13rtc: fix alarm read and set offsetAlexandre Belloni
The offset needs to be added after reading the alarm value. It also needs to be subtracted after the now < alarm test. Tested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
generated by cgit (git 2.34.1) at 2025-09-13 07:14:56 +0000