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path: root/drivers/rtc
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2019-03-02rtc: pcf85063: remove dead codeAlexey Roslyakov
Some of defines are not in use since 7b5768486a910532885f01b9d2dad4818c8b3be1. Remove it to make the code easier to read and understand. Signed-off-by: Alexey Roslyakov <alexey.roslyakov@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-25rtc: remove rtc_class_ops.read_callbackAlexandre Belloni
Since commit 416f0e8056f7 ("RTC: sa1100: Update the sa1100 RTC driver."), the last user of .read_callback is gone. It has been 8 years and now new user appeared. Simply remove it. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-21platform/chrome: wilco_ec: Add RTC driverNick Crews
This Embedded Controller has an internal RTC that is exposed as a standard RTC class driver with read/write functionality. The driver is added to the drivers/rtc/ so that the maintainer of that directory will be able to comment on this change, as that maintainer is the expert on this system. In addition, the driver code is called indirectly after a corresponding device is registered from core.c, as opposed to core.c registering the driver callbacks directly. To test: > hwclock --show --rtc /dev/rtc1 2007-12-31 16:01:20.460959-08:00 > hwclock --systohc --rtc /dev/rtc1 > hwclock --show --rtc /dev/rtc1 2018-11-29 17:08:00.780793-08:00 > hwclock --show --rtc /dev/rtc1 2007-12-31 16:01:20.460959-08:00 > hwclock --systohc --rtc /dev/rtc1 > hwclock --show --rtc /dev/rtc1 2018-11-29 17:08:00.780793-08:00 Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Nick Crews <ncrews@chromium.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> [Fix the sparse warning: symbol 'wilco_ec_rtc_read/write' was not declared] Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
2019-02-18rtc: add AB-RTCMC-32.768kHz-EOZ9 RTC supportArtem Panfilov
This patch adds support for AB-RTCMC-32.768kHz-EOZ9 RTC/Calendar module with I2C interface. Signed-off-by: Artem Panfilov <panfilov.artyom@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-17rtc: hid-sensor-time: stop selecting IIOAlexandre Belloni
Make RTC_DRV_HID_SENSOR_TIME depend on IIO and HID_SENSOR_HUB to remove possible circular dependencies as this is the only symbol selecting those. Suggested-by: Florian Lohoff <f@zz.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-17rtc: rv3028: add new driverAlexandre Belloni
Add a driver for the MicroCrystal RV-3028. It is a SMT Real-Time Clock Module that incorporates an integrated CMOS circuit together with an XTAL. It has an i2c interface. The driver handles date/time, alarms, trickle charging, timestamping, frequency offset correction, EEPROM and NVRAM. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-17rtc: isl1208: Add new style nvmem support to driverTrent Piepho
Add support for the RTC's NVRAM using the standard nvmem support that is part of the Linux RTC framework. This driver already has a sysfs attribute that provides access to the RTC's NVRAM as a single 16-bit value. Some chips have more than two bytes of NVRAM, so this will not work for them. It's also non-standard. This sysfs attribute is left in for backward compatibility, but will only be able to read the first two bytes of NVRAM. The nvmem interface will allow access to all NVRAM, e.g. eight bytes on the isl1218. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Trent Piepho <tpiepho@impinj.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-17rtc: isl1208: Support more chip variationsTrent Piepho
Add more support in the driver for dealing with differences in is1208 compatible chips. Put the 1208, 1209, 1218, and 1219 in the list and encode information about nvram size, tamper, and timestamp features. This adds support for the isl1209, which has a tamper detect but no timestamp feature. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Trent Piepho <tpiepho@impinj.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-17rtc: isl1208: Introduce driver state structTrent Piepho
This driver has no state of its own, depending entirely on what is in the generic rtc device. Intoduce a state struct. For now it only contains a pointer to the rtc device struct, but future patches will add more data. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Trent Piepho <tpiepho@impinj.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-17rtc: meson: remove useless rtc_nvmem_unregister callAlexandre Belloni
rtc_nvmem_unregister() is called on rtc_device release so it is not necessary to call it from the driver. Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-11rtc: support for the Amlogic Meson RTCMartin Blumenstingl
Add support for the RTC block on the 32-bit Amlogic Meson6, Meson8, Meson8b and Meson8m2 SoCs. The RTC is split in to two parts, which are both managed by this driver: - the AHB front end - and a simple serial connection to the actual registers The RTC_COUNTER register which holds the time is 32-bits wide. There are four 32-bit wide (in total: 16 bytes) "regmem" registers which are exposed using nvmem. On Amlogic's 3.10 kernel this is used to store data which needs to survive a suspend / resume cycle. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> [resurrected Ben's patches after 2 years] Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-11rtc: rs5c372: Fix reading from rtc when the oscillator got interrupted.Oliver.Rohe@wago.com
When the oscillator of the rtc gets interrupted, e.g. due to an empty battery, reading from the rtc will now return an error and the oscillator bit will be cleared, once the rtc is successfully reset. Signed-off-by: Oliver Rohe <oliver.rohe@wago.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-08rtc: imx-sc: depend on HAVE_ARM_SMCCCAlexandre Belloni
Fix the following build issue: drivers/rtc/rtc-imx-sc.o: In function `imx_sc_rtc_set_time': >> rtc-imx-sc.c:(.text+0x212): undefined reference to `__arm_smccc_smc' Fixes: 13a929f38ad7 ("rtc: imx-sc: add rtc set time support") Reviewed-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-08rtc: pm8xxx: fix unintended sign extensionColin Ian King
Shifting a u8 by 24 will cause the value to be promoted to an integer. If the top bit of the u8 is set then the following conversion to an unsigned long will sign extend the value causing the upper 32 bits to be set in the result. Fix this by casting the u8 value to an unsigned long before the shift. Detected by CoverityScan, CID#1309693 ("Unintended sign extension") Fixes: 9a9a54ad7aa2 ("drivers/rtc: add support for Qualcomm PMIC8xxx RTC") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-08rtc: 88pm80x: fix unintended sign extensionColin Ian King
Shifting a u8 by 24 will cause the value to be promoted to an integer. If the top bit of the u8 is set then the following conversion to an unsigned long will sign extend the value causing the upper 32 bits to be set in the result. Fix this by casting the u8 value to an unsigned long before the shift. Detected by CoverityScan, CID#714646-714649 ("Unintended sign extension") Fixes: 2985c29c1964 ("rtc: Add rtc support to 88PM80X PMIC") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-08rtc: 88pm860x: fix unintended sign extensionColin Ian King
Shifting a u8 by 24 will cause the value to be promoted to an integer. If the top bit of the u8 is set then the following conversion to an unsigned long will sign extend the value causing the upper 32 bits to be set in the result. Fix this by casting the u8 value to an unsigned long before the shift. Detected by CoverityScan, CID#144925-144928 ("Unintended sign extension") Fixes: 008b30408c40 ("mfd: Add rtc support to 88pm860x") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-07rtc: ds1307: rx8130: Fix alarm handlingUwe Kleine-König
When the EXTENSION.WADA bit is set, register 0x19 contains a bitmap of week days, not a day of month. As Linux only handles a single alarm without repetition using day of month is more flexible, so clear this bit. (Otherwise a value depending on time.tm_wday would have to be written to register 0x19.) Also optimize setting the AIE bit to use a single register write instead of a bulk write of three registers. Fixes: ee0981be7704 ("rtc: ds1307: Add support for Epson RX8130CE") Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-07rtc: ds1307: rx8130: honor Voltage Loss Flag when reading the timeUwe Kleine-König
When voltage dropped since the RTC was last set the reported time is not reliable. In this case return an error indicator instead of a bogus time. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-07rtc: ds1307: correct register offset for rx8130Uwe Kleine-König
While rx8130 has a register offset of 0x10 in its chip_desc, this isn't used when regmap accesses are done. So add 0x10 to access the right locations. Fixes: ee0981be7704 ("rtc: ds1307: Add support for Epson RX8130CE") Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-07rtc: ds1307: forward declare chips array instead of a bunch of functionsUwe Kleine-König
There used to be 16 declarations for static functions. By just adding a declaration for the chips array and reordering the functions the 16 function declarations can be dropped. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-07rtc: ds1307: Move register definitions to start of fileUwe Kleine-König
This allows to use the register offsets in all functions which is needed in one of the next patches. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-07rtc: imx-sc: add rtc set time supportAnson Huang
This patch adds i.MX system controller RTC set time support, the RTC set time is implemented via SIP(silicon provider) runtime service call and ARM-Trusted-Firmware will communicate with system controller via MU(message unit) IPC to set RTC time. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-05rtc: rs5c372: r2221: fix to use the correct XSTP bitOliver.Rohe@wago.com
The Ricoh chips have slightly different register layouts and the r2221 chip uses bit 5 as the oscillator halt sensor bit. Signed-off-by: Olive Rohe <oliver.rohe@wago.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-05rtc: snvs: make sure clock is enabled for interrupt handleAnson Huang
During system suspend, the SNVS RTC's clock will be disabled in noirq suspend phase, but SNVS RTC's alarm interrupt could still arrive, system will hang if SNVS RTC driver tries to access register without clock enabled, this patch fixes the issue of this scenario. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-02-05rtc: ds1672: fix unintended sign extensionColin Ian King
Shifting a u8 by 24 will cause the value to be promoted to an integer. If the top bit of the u8 is set then the following conversion to an unsigned long will sign extend the value causing the upper 32 bits to be set in the result. Fix this by casting the u8 value to an unsigned long before the shift. Detected by CoverityScan, CID#138801 ("Unintended sign extension") Fixes: edf1aaa31fc5 ("[PATCH] RTC subsystem: DS1672 driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-30rtc: abx80x: Configure reserved bits in RV1805Marek Vasut
The RV1805 uses smaller package than the AB1805, discern those two chips based on the compatible value and configure reserved bits in the RV1805 to prevent current leakage and accidental test mode entry. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> To: linux-rtc@vger.kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-23rtc: sd3078: fix platform_no_drv_owner.cocci warningsYueHaibing
Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: Add Cadence RTC driverJan Kotas
This patch adds a driver for Cadence RTC controller. It can be enabled with RTC_DRV_CADENCE Kconfig option. It supports waking system from sleep modes. Signed-off-by: Jan Kotas <jank@cadence.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: cmos: ignore bogus century byteEric Wong
Older versions of Libreboot and Coreboot had an invalid value (`3' in my case) in the century byte affecting the GM45 in the Thinkpad X200. Not everybody's updated their firmwares, and Linux <= 4.2 was able to read the RTC without problems, so workaround this by ignoring invalid values. Fixes: 3c217e51d8a272b9 ("rtc: cmos: century support") Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sylvain Chouleur <sylvain.chouleur@intel.com> Cc: Patrick McDermott <patrick.mcdermott@libiquity.com> Cc: linux-rtc@vger.kernel.org Signed-off-by: Eric Wong <e@80x24.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: hym8563: fix a missing check of block data readKangjie Lu
When i2c_smbus_read_i2c_block_data() fails, the read data in "buf" could be incorrect and should not be used. The fix checks if i2c_smbus_read_i2c_block_data fails, and if so, return its error code upstream. Signed-off-by: Kangjie Lu <kjlu@umn.edu> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: coh901331: fix a missing check of clk_prepareKangjie Lu
clk_prepare() could fail, so let's check its status and if it fails return its error code upstream. Signed-off-by: Kangjie Lu <kjlu@umn.edu> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: pcf85063: set xtal load capacitance from DTSam Ravnborg
Add support for specifying the xtal load capacitance in the DT node. The pcf85063 supports xtal load capacitance of 7pF or 12.5pF. If the rtc has the wrong configuration the time will drift several hours/week. The driver use the default value 7pF. The DT may specify either 7000fF or 12500fF. (The DT uses femto Farad to avoid decimal numbers). Other values are warned and the driver uses the default value. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Urs Fässler <urs.fassler@bbv.ch> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: pcf8523: set xtal load capacitance from DTSam Ravnborg
Add support for specifying the xtal load capacitance in the DT node. The pcf8523 supports xtal load capacitance of 7pF or 12.5pF. If the rtc has the wrong configuration the time will drift several hours/week. The driver use the default value 12.5pF. The DT may specify either 7000fF or 12500fF. (The DT uses femto Farad to avoid decimal numbers). Other values are warned and the driver uses the default value. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: s3c: Use generic helper to get driver dataMarek Szyprowski
Replace of_match_node() with of_device_get_match_data(), which removes a few lines of code from the driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: s3c: Rewrite clock handlingMarek Szyprowski
s3c_rtc_enable/disable_clk() functions were designed to be called multiple times without reference counting, because they were initially only used in alarm setting/clearing functions, which can be called both when alarm is already set or not. Later however, calls to those functions have been added to other places in the driver - like time and /proc reading callbacks, what results in broken alarm if any of such events happens after the alarm has been set. Fix this by simplifying s3c_rtc_enable/disable_clk() functions to rely on proper reference counting in clock core and move alarm enable counter to s3c_rtc_setaie() function. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-22rtc: sd3078: make symbol 'sd3078_driver' staticWei Yongjun
Fixes the following sparse warning: drivers/rtc/rtc-sd3078.c:218:19: warning: symbol 'sd3078_driver' was not declared. Should it be static? Fixes: 1d67a232105b ("rtc: sd3078: new driver.") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-10rtc: isl1208: fix negative digital trim reportingTrent Piepho
isl1208_i2c_get_dtr() was returning the dtr value directly, but could also return a negative error code. Negative trimming values, e.g. -20, would get interpreted as an error code, e.g. -ENOTDIR. This patch offsets the dtr value by 100 so it's positive and won't alias an error code. Also fix check that considered a return value of -1 to be success. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Trent Piepho <tpiepho@impinj.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-10rtc: Fix UBSAN overflow warningZhangXiaoxu
Users may call 'ioctl' and pass a very big value on 'tm->tm_year'. It can be overflowed in 'int' after add 1900. In function 'rtc_month_days' and 'mktime64', also treated it as an 'unsigned' parameter. UBSAN: Undefined behaviour in drivers/rtc/rtc-lib.c:103:59 signed integer overflow: 2147483647 + 1900 cannot be represented in type 'int' UBSAN: Undefined behaviour in drivers/rtc/rtc-lib.c:119:30 signed integer overflow: 2147483647 + 1900 cannot be represented in type 'int' So, covert it to 'unsigned' explicitly. Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-10rtc: pcf8523: Add rv8523 compatibleAlexandre Belloni
The Microcrystal RV-8523 is compatible with the PCF8523. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-10rtc: sd3078: new driver.Dianlong Li
The sd3078 is a combination RTC and SRAM device with I2C interface. Signed-off-by: Dianlong Li <long17.cool@163.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-01-01Merge tag 'rtc-4.21' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Subsystem: - new %ptR printk format - rename core files - allow registration of multiple nvmem devices New driver: - i.MX system controller RTC Driver updates: - abx80x: handle voltage ioctls, correct binding doc - m41t80: correct month in alarm reads - pcf85363: add pcf85263 support - pcf8523: properly handle battery low flag - s3c: limit alarm to one year in the future as ALMYEAR is broken - sun6i: rework clock output binding" * tag 'rtc-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (54 commits) rtc: rename core files rtc: nvmem: fix possible use after free rtc: add i.MX system controller RTC support dt-bindings: fsl: scu: add rtc binding rtc: pcf2123: Add Microcrystal rv2123 rtc: class: reimplement devm_rtc_device_register rtc: enforce rtc_timer_init private_data type rtc: abx80x: Implement RTC_VL_READ,CLR ioctls rtc: pcf85363: Add support for NXP pcf85263 rtc dt-bindings: rtc: pcf85363: Document pcf85263 real-time clock rtc: pcf8523: don't return invalid date when battery is low dt-bindings: rtc: use a generic node name for ds1307 PM: Switch to use %ptR m68k/mac: Switch to use %ptR Input: hp_sdc_rtc - Switch to use %ptR rtc: tegra: Switch to use %ptR rtc: s5m: Switch to use %ptR rtc: s3c: Switch to use %ptR rtc: rx8025: Switch to use %ptR rtc: rx6110: Switch to use %ptR ...
2018-12-31rtc: rename core filesAlexandre Belloni
Rename core files so there is a clearer separation between the RTC core and the RTC drivers. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-31rtc: nvmem: fix possible use after freeAlexandre Belloni
In cas of probe failure, devres may free the memory allocated for rtc->nvram before devm_rtc_release_device() is called. This leads to rtc_nvram_unregister using it after being freed which may lead to a crash. This has been shown to happen after commit 461e557b9727 ("rtc: nvmem: use devm_nvmem_register()") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-20rtc: add i.MX system controller RTC supportAnson Huang
i.MX8QXP is an ARMv8 SoC which has a Cortex-M4 system controller inside, the system controller is in charge of controlling power, clock and secure rtc etc.. This patch adds i.MX system controller RTC driver support, Linux kernel has to communicate with system controller via MU (message unit) IPC to set/get RTC time and other alarm functions, since the RTC set time needs to be done in secure EL3 mode (required by system controller firmware) and alarm functions needs to be done with general MU IRQ handle, these depend on other components which are NOT ready, so this patch ONLY enables the RTC time read. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-18rtc: pcf2123: Add Microcrystal rv2123Alexandre Belloni
Add a compatible string for Microcrystal rv2123 as the reset procedure seem to be differing. However, the current driver works just fine. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-18rtc: class: reimplement devm_rtc_device_registerAlexandre Belloni
Implement devm_rtc_device_register using devm_rtc_allocate_device and __rtc_register_device so there is only one path left to register rtc devices. Also mark it as deprecated so new drivers will hopefully use devm_rtc_allocate_device and rtc_register_device that are less race prone and allow avoiding the 2038, 2070, 2100 and 2106 bugs properly. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-18rtc: enforce rtc_timer_init private_data typeAlexandre Belloni
All the remaining users of rtc_timers are passing the rtc_device as private data. Enforce that and rename private_data to rtc. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-18rtc: abx80x: Implement RTC_VL_READ,CLR ioctlsMarek Vasut
Implement standard ioctls for polling the battery status and clearing the battery low indication from userspace. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-11rtc: pcf85363: Add support for NXP pcf85263 rtcBiju Das
Add support for NXP pcf85263 real-time clock. pcf85263 rtc is compatible with pcf85363,except that pcf85363 has additional 64 bytes of RAM. 1 byte of nvmem is supported and exposed in sysfs (# is the instance number,starting with 0): /sys/bus/nvmem/devices/pcf85x63-#/nvmem Signed-off-by: Biju Das <biju.das@bp.renesas.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-12-11rtc: pcf8523: don't return invalid date when battery is lowBaruch Siach
The RTC_VL_READ ioctl reports the low battery condition. Still, pcf8523_rtc_read_time() happily returns invalid dates in this case. Check the battery health on pcf8523_rtc_read_time() to avoid that. Reported-by: Erik Čuk <erik.cuk@domel.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
generated by cgit (git 2.34.1) at 2025-07-18 19:09:44 +0000