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path: root/drivers/rtc/Makefile
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2021-10-23rtc: tps80031: Remove driverDmitry Osipenko
Driver was upstreamed in 2013 and never got a user, remove it. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20211021192258.21968-2-digetx@gmail.com
2021-09-26rtc: Add support for the MSTAR MSC313 RTCDaniel Palmer
This adds support for the RTC block on the Mstar MSC313e SoCs and newer. Signed-off-by: Daniel Palmer <daniel@0x0f.com> Co-developed-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Romain Perier <romain.perier@gmail.com> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210823171613.18941-3-romain.perier@gmail.com
2021-08-10rtc: move RTC_LIB_KUNIT_TEST to proper locationAlexandre Belloni
Move RTC_LIB_KUNIT_TEST under RTC_LIB so it is clear in the menu this is part of the RTC subsystem. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210810212008.631359-2-alexandre.belloni@bootlin.com
2021-08-10rtc: Improve performance of rtc_time64_to_tm(). Add tests.Cassio Neri
The current implementation of rtc_time64_to_tm() contains unnecessary loops, branches and look-up tables. The new one uses an arithmetic-based algorithm appeared in [1] and is approximately 4.3 times faster (YMMV). The drawback is that the new code isn't intuitive and contains many 'magic numbers' (not unusual for this type of algorithm). However, [1] justifies all those numbers and, given this function's history, the code is unlikely to need much maintenance, if any at all. Add a KUnit test case that checks every day in a 160,000 years interval starting on 1970-01-01 against the expected result. Add a new config RTC_LIB_KUNIT_TEST symbol to give the option to run this test suite. [1] Neri, Schneider, "Euclidean Affine Functions and Applications to Calendar Algorithms". https://arxiv.org/abs/2102.06959 Signed-off-by: Cassio Neri <cassio.neri@gmail.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210624201343.85441-1-cassio.neri@gmail.com
2021-03-10rtc: New driver for RTC in Netronix embedded controllerJonathan Neuschäfer
With this driver, mainline Linux can keep its time and date in sync with the vendor kernel. Advanced functionality like alarm and automatic power-on is not yet supported. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-02-22Merge tag 'rtc-5.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Many cleanups and a few drivers removal this cycle. Subsystem: - Introduce features bitfield and the first feature: RTC_FEATURE_ALARM Removed drivers: - ab3100 - coh901331 - tx4939 - sirfsoc Drivers: - use rtc_lock and rtc_unlock instead of opencoding - constify all struct rtc_class_ops - quiet maybe-unused variable warning - replace spin_lock_irqsave with spin_lock in hard IRQ - pcf2127: disable Power-On Reset Override and run OTP refresh" * tag 'rtc-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (81 commits) rtc: abx80x: Add utility function for writing configuration key rtc: pcf2127: properly set flag WD_CD for rtc chips(pcf2129, pca2129) rtc: pcf8563: Add NXP PCA8565 compatible rtc: s3c: quiet maybe-unused variable warning rtc: s3c: stop setting bogus time rtc: sd3078: quiet maybe-unused variable warning rtc: s35390a: quiet maybe-unused variable warning rtc: rx8581: quiet maybe-unused variable warning rtc: rx8010: quiet maybe-unused variable warning rtc: rv8803: quiet maybe-unused variable warning rtc: rv3032: quiet maybe-unused variable warning rtc: rv3029: quiet maybe-unused variable warning rtc: rv3028: quiet maybe-unused variable warning rtc: rs5c372: quiet maybe-unused variable warning rtc: pcf85363: quiet maybe-unused variable warning rtc: pcf85063: quiet maybe-unused variable warnings rtc: meson: quiet maybe-unused variable warning rtc: m41t80: quiet maybe-unused variable warning rtc: isl1208: quiet maybe-unused variable warning rtc: ds3232: quiet maybe-unused variable warning ...
2021-01-25rtc: mrst: Remove driver for deprecated platformAndy Shevchenko
Intel Moorestown and Medfield are quite old Intel Atom based 32-bit platforms, which were in limited use in some Android phones, tablets and consumer electronics more than eight years ago. There are no bugs or problems ever reported outside from Intel for breaking any of that platforms for years. It seems no real users exists who run more or less fresh kernel on it. The commit 05f4434bc130 ("ASoC: Intel: remove mfld_machine") also in align with this theory. Due to above and to reduce a burden of supporting outdated drivers we remove the support of outdated platforms completely. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-01-23rtc: remove ste ab3100 driverArnd Bergmann
The ST-Ericsson U300 platform is getting removed, so this driver is no longer needed. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210120154158.1860736-4-arnd@kernel.org
2021-01-23rtc: remove ste coh901 driverArnd Bergmann
The ST-Ericsson U300 platform is getting removed, so this driver is no longer needed. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210120154158.1860736-3-arnd@kernel.org
2021-01-23rtc: remove sirfsoc driverArnd Bergmann
The CSR SiRF prima2/atlas platforms are getting removed, so this driver is no longer needed. Cc: Barry Song <baohua@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Barry Song <baohua@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210120154158.1860736-2-arnd@kernel.org
2021-01-13rtc: tx4939: Remove driverThomas Bogendoerfer
CPU support for TX49xx is getting removed, so remove rtc driver for it. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210105140305.141401-9-tsbogend@alpha.franken.de
2020-12-11ntp, rtc: Move rtc_set_ntp_time() to ntp codeThomas Gleixner
rtc_set_ntp_time() is not really RTC functionality as the code is just a user of RTC. Move it into the NTP code which allows further cleanups. Requested-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20201206220542.166871172@linutronix.de
2020-10-19rtc: rv3032: Add a driver for Microcrystal RV-3032Alexandre Belloni
New driver for the Microcrystal RV-3032, including support for: - Date/time - Alarms - Low voltage detection - Trickle charge - Trimming - Clkout - RAM - EEPROM - Temperature sensor Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20201013144110.1942218-3-alexandre.belloni@bootlin.com
2020-07-01rtc: remove fb-puv3 driverMike Rapoport
The unicore32 port is removed from the kernel. There is no point to keep stale RTC driver for this architecture. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Guenter Roeck <linux@roeck-us.net>
2020-04-07Merge tag 'mfd-next-5.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull mfd updates from Lee Jones: "New Drivers: - Add support for IQS620A/621/622/624/625 Azoteq IQS62X Sensors New Device Support: - Add support for ADC, IRQ, Regulator, RTC and WDT to Ricoh RN5T618 PMIC - Add support for Comet Lake to Intel LPSS New Functionality: - Add support for Charger Detection to Spreadtrum SC27xx PMICs - Add support for Interrupt Polarity to Dialog Semi DA9062/61 PMIC - Add ACPI enumeration support to Diolan DLN2 USB Adaptor Fix-ups: - Device Tree; iqs62x, rn5t618, cros_ec_dev, stm32-lptimer, rohm,bd71837, rohm,bd71847 - I2C registration; rn5t618 - Kconfig; MFD_CPCAP, AB8500_CORE, MFD_WM8994, MFD_WM97xx, MFD_STPMIC1 - Use flexible-array members; omap-usb-tll, qcom-pm8xxx - Remove unnecessary casts; omap-usb-host, omap-usb-tll - Power (suspend/resume/poweroff) enhancements; rk808 - Improve error/sanity checking; dln2 - Use snprintf(); aat2870-core Bug Fixes: - Fix PCI IDs in intel-lpss-pci" * tag 'mfd-next-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (33 commits) mfd: intel-lpss: Fix Intel Elkhart Lake LPSS I2C input clock mfd: aat2870: Use scnprintf() for avoiding potential buffer overflow mfd: dln2: Allow to be enumerated via ACPI mfd: da9062: Add support for interrupt polarity defined in device tree dt-bindings: bd718x7: Yamlify and add BD71850 mfd: dln2: Fix sanity checking for endpoints mfd: intel-lpss: Add Intel Comet Lake PCH-V PCI IDs mfd: sc27xx: Add USB charger type detection support dt-bindings: mfd: Document STM32 low power timer bindings mfd: rk808: Convert RK805 to shutdown/suspend hooks mfd: rk808: Reduce shutdown duplication mfd: rk808: Stop using syscore ops mfd: rk808: Ensure suspend/resume hooks always work mfd: rk808: Always use poweroff when requested mfd: omap: Remove useless cast for driver.name mfd: Kconfig: Fix some misspelling of the word functionality mfd: pm8xxx: Replace zero-length array with flexible-array member mfd: omap-usb-tll: Replace zero-length array with flexible-array member mfd: cpcap: Fix compile if MFD_CORE is not selected mfd: cros_ec: Check DT node for usbpd-notify add ...
2020-04-04Merge tag 'rtc-5.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "More cleanup this cycle, with the final goal of removing the rtc_time_to_tm and rtc_tm_to_time wrappers. All the drivers that have been modified for this now are ready for the end of times (whether it happens in 2033, 2038, 2106, 2127 or even 4052). There is also a single new driver and the usual fixes and features. Summary: Subsystem: - The rtc_time_to_tm and rtc_tm_to_time wrappers have finally been removed and only the 64bit version remain. - hctosys now works with drivers compiled as modules New driver: - MediaTek MT2712 SoC based RTC Drivers: - set range for 88pm860x, au1xxx, cpcap, da9052, davinci, ds1305, ds1374, mcp5121, pl030, pl031, pm8xxx, puv3, sa1100, sirfsoc, starfire, sun6i - ds1307: DS1388 oscillator failure detection and watchdog support - jz4740: JZ4760 support - pcf85063: clock out pin support - sun6i: external 32k oscillator is now optional, the range is now handled by the core, providing a solution for 2034" * tag 'rtc-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (87 commits) rtc: ds1307: check for failed memory allocation on wdt rtc: class: remove redundant assignment to variable err rtc: remove rtc_time_to_tm and rtc_tm_to_time rtc: sun6i: let the core handle rtc range rtc: sun6i: switch to rtc_time64_to_tm/rtc_tm_to_time64 rtc: ds1307: add support for watchdog timer on ds1388 rtc: da9052: switch to rtc_time64_to_tm/rtc_tm_to_time64 rtc: da9052: set range rtc: da9052: convert to devm_rtc_allocate_device rtc: imx-sc: Align imx sc msg structs to 4 rtc: fsl-ftm-alarm: report alarm to core rtc: pcf85063: Add pcf85063 clkout control to common clock framework rtc: make definitions in include/uapi/linux/rtc.h actually useful for user space rtc: class: avoid unnecessary lookup in hctosys dt-bindings: rtc: Convert and update jz4740-rtc doc to YAML rtc: jz4740: Rename vendor-specific DT properties rtc: jz4740: Add support for JZ4760 SoC rtc: class: support hctosys from modular RTC drivers rtc: pm8xxx: clear alarm register when alarm is not enabled rtc: omap: drop unused dt-bindings header ...
2020-03-27rtc: rc5t619: Add Ricoh RC5T619 RTC driverAndreas Kemnade
Add an RTC driver for the RTC device on Ricoh MFD RC5T619, which is implemented as a variant of RN5T618. rtc-range output: Testing 2000-02-28 23:59:59. OK Testing 2038-01-19 03:14:07. OK Testing 2069-12-31 23:59:59. OK Testing 2099-12-31 23:59:59. KO RTC_RD_TIME returned 22 (line 138) Testing 2100-02-28 23:59:59. KO RTC_SET_TIME returned 34 (line 122) Testing 2106-02-07 06:28:15. KO RTC_SET_TIME returned 34 (line 122) Testing 2262-04-11 23:47:16. KO RTC_SET_TIME returned 34 (line 122) Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-23rtc: class: support hctosys from modular RTC driversSteve Muckle
Due to distribution constraints it may not be possible to statically compile the required RTC driver into the kernel. Expand RTC_HCTOSYS support to cover all RTC devices (statically compiled or not) by checking at the end of RTC device registration whether the time should be synced. Signed-off-by: Steve Muckle <smuckle@google.com> Link: https://lore.kernel.org/r/20191106194625.116692-1-smuckle@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-03-16rtc: add support for the MediaTek MT2712 RTCRan Bi
This add support for the MediaTek MT2712 RTC. It was SoC based RTC, but had different architecture compared with MT7622 RTC. Signed-off-by: Ran Bi <ran.bi@mediatek.com> Link: https://lore.kernel.org/r/20200226051303.22560-3-ran.bi@mediatek.com Link: https://lore.kernel.org/r/20200316104701.209293-2-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-02-23efi: Register EFI rtc platform device only when availableArd Biesheuvel
Drop the separate driver that registers the EFI rtc on all EFI systems that have runtime services available, and instead, move the registration into the core EFI code, and make it conditional on whether the actual time related services are available. Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2019-08-23rtc: fsl-ftm-alarm: add FTM alarm driverBiwen Li
For the platforms including LS1012A, LS1021A, LS1028A, LS1043A, LS1046A, LS1088A, LS208xA that has the FlexTimer module, implementing alarm functions within RTC subsystem to wakeup the system when system going to sleep (work with RCPM driver). Signed-off-by: Biwen Li <biwen.li@nxp.com> Link: https://lore.kernel.org/r/20190813030157.48590-1-biwen.li@nxp.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-08-22rtc: Add Amlogic Virtual Wake RTCNeil Armstrong
The Amlogic Meson GX SoCs uses a special register to store the time in seconds to wakeup after a system suspend. In order to be able to reuse the RTC wakealarm feature, this driver implements a fake RTC device which uses the system time to deduce a suspend delay. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> [khilman: rebase to v5.3-rc, rework and modernization] Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20190812232850.8016-3-khilman@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-08-12rtc: remove w90x900/nuc900 driverArnd Bergmann
The ARM w90x900 platform is getting removed, so this driver is obsolete. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20190809202749.742267-15-arnd@arndb.de Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-06-27rtc: bd70528: Initial support for ROHM bd70528 RTCMatti Vaittinen
Support RTC block in ROHM bd70528 power management IC. Support getting and setting the time and date as well as arming an alarm which can also be used to wake the PMIC from standby state. HW supports wake interrupt only for the next 24 hours (sec, minute and hour information only) so we limit also the alarm interrupt to this 24 hours for the sake of consistency. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-04-04rtc: Add ASPEED RTC driverJoel Stanley
Read and writes the time to the non-battery backed RTC in the ASPEED BMC system on chip families. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-03-12Merge tag 'tag-chrome-platform-for-v5.1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux Pull chrome platform updates from Benson Leung: - SPDX identifier cleanup for platform/chrome - Cleanup series between mfd and chrome/platform, moving cros-ec attributes from mfd/cros_ec_dev to sub-drivers in platform/chrome - Wilco EC driver - Maintainership change to new group repository * tag 'tag-chrome-platform-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: platform/chrome: fix wilco-ec dependencies platform/chrome: wilco_ec: Add RTC driver platform/chrome: wilco_ec: Add support for raw commands in debugfs platform/chrome: Add new driver for Wilco EC platform/chrome: cros_ec: Remove cros_ec dependency in lpc_mec MAINTAINERS: chrome-platform: change the git tree to a chrome-platform group git tree platform/chrome: cros_ec_sysfs: remove pr_fmt() define platform/chrome: cros_ec_lightbar: remove pr_fmt() define platform/chrome: cros_kbd_led_backlight: switch to SPDX identifier platform/chrome: cros_ec_spi: switch to SPDX identifier platform/chrome: cros_ec_proto: switch to SPDX identifier platform/chrome: cros_ec_lpc: switch to SPDX identifier platform/chrome: cros_ec_i2c: switch to SPDX identifier platform/chrome: cros_ec_vbc: switch to SPDX identifier platform/chrome: cros_ec_sysfs: switch to SPDX identifier platform/chrome: cros_ec_lightbar: switch to SPDX identifier platform/chrome: cros_ec_debugfs: switch to SPDX identifier platform/chrome: cromeos_pstore: switch to SPDX identifier
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: 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>
2019-02-11rtc: 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>
2019-01-22rtc: 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>
2019-01-10rtc: 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>
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>
2018-12-20rtc: 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>
2018-09-28rtc: reorder Makefile entriesAlexandre Belloni
A few entries are not placed correctly, reorder them. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-04-10Merge tag 'rtc-4.17' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "This contains a few series that have been in preparation for a while and that will help systems with RTCs that will fail in 2038, 2069 or 2100. Subsystem: - Add tracepoints - Rework of the RTC/nvmem API to allow drivers to discard struct nvmem_config after registration - New range API, drivers can now expose the useful range of the RTC - New offset API the core is now able to add an offset to the RTC time, modifying the supported range. - Multiple rtc_time64_to_tm fixes - Handle time_t overflow on 32 bit platforms in the core instead of letting drivers do crazy things. - remove rtc_control API New driver: - Intersil ISL12026 Drivers: - Drivers exposing the RTC non volatile memory have been converted to use nvmem - Removed useless time and date validation - Removed an indirection pattern that was a cargo cult from ancient drivers - Removed VLA usage - Fixed a possible race condition in probe functions - AB8540 support is dropped from ab8500 - pcf85363 now has alarm support" * tag 'rtc-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (128 commits) rtc: snvs: Fix usage of snvs_rtc_enable rtc: mt7622: fix module autoloading for OF platform drivers rtc: isl12022: use true and false for boolean values rtc: ab8500: Drop AB8540 support rtc: remove a warning during scripts/kernel-doc step rtc: 88pm860x: remove artificial limitation rtc: 88pm80x: remove artificial limitation rtc: st-lpc: remove artificial limitation rtc: mrst: remove artificial limitation rtc: mv: remove artificial limitation rtc: hctosys: Ensure system time doesn't overflow time_t parisc: time: stop validating rtc_time in .read_time rtc: pcf85063: fix clearing bits in pcf85063_start_clock rtc: at91sam9: Set name of regmap_config rtc: s5m: Remove VLA usage rtc: s5m: Move enum from rtc.h to rtc-s5m.c rtc: remove VLA usage rtc: Add useful timestamp definitions rtc: Add one offset seconds to expand RTC range rtc: Factor out the RTC range validation into rtc_valid_range() ...
2018-03-26rtc: remove bfin driverArnd Bergmann
The blackfin architecture is getting removed, so this one is now obsolete. Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Aaron Wu <aaron.wu@analog.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26rtc: remove tile driverArnd Bergmann
The tile architecture is getting removed, so this driver is no longer needed. Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-17rtc: isl12026: new driver.David Daney
The ISL12026 is a combination RTC and EEPROM device with I2C interface. The standard RTC driver interface is provided. The EEPROM is accessed via the NVMEM interface. Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-01-19rtc: remove rtc-at32ap700xCorentin Labbe
Since PLATFORM_AT32AP is an AVR32 platform which was removed, the rtc driver rtc-at32ap700x is useless. This patch remove it. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2018-01-12rtc: add mxc driver for i.MX53 SRTCPatrick Bruenn
Neither rtc-imxdi, rtc-mxc nor rtc-snvs are compatible with i.MX53. This is driver enables support for the low power domain SRTC features: - 32-bit MSB of non-rollover time counter - 32-bit alarm register Select the new config option RTC_DRV_MXC_V2 to build this driver Based on: http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/rtc/rtc-mxc_v2.c?h=imx_2.6.35_11.09.01 Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com> Acked-by: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-12-18rtc: cros-ec: add cros-ec-rtc driver.Stephen Barber
On platforms with a Chrome OS EC, the EC can function as a simple RTC. Add a basic driver with this functionality. Signed-off-by: Stephen Barber <smbarber@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Benson Leung <bleung@chromium.org> Reviewed-by: Brian Norris <briannorris@chromium.org> Tested-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-11-22Merge tag 'rtc-4.15' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "There is nothing scary this cycle, mostly driver fixes and updates. The core fix has been in for a while and has been tested on multiple kernel revisions by multiple teams. Core: - Fix setting the alarm to the next expiring timer New drivers: - Mediatek MT7622 RTC - NXP PCF85363 - Spreadtrum SC27xx PMIC RTC Drivers updates: - Use generic nvmem to expose the Non volatile ram for ds1305, ds1511, m48t86 and omap - abx80x: solve possible race condition at probe - armada38x: support trimming the RTC oscillator - at91rm9200: fix reading the alarm value at boot - ds1511: allow waking platform - m41t80: rework square wave output - pcf8523: support trimming the RTC oscillator - pcf8563: fix clock output rate - pl031: make interrupt optional - xgene: fix suspend/resume" * tag 'rtc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits) dt-bindings: rtc: imxdi: Improve the bindings text rtc: sc27xx: Add Spreadtrum SC27xx PMIC RTC driver dt-bindings: rtc: Add Spreadtrum SC27xx RTC documentation rtc: at91rm9200: fix reading alarm value rtc: at91rm9200: stop calculating yday in at91_rtc_readalarm rtc: sysfs: Use time64_t variables to set time/alarm rtc: xgene: mark PM functions as __maybe_unused rtc: xgene: Fix suspend/resume rtc: pcf8563: don't alway enable the alarm rtc: pcf8563: fix output clock rate rtc: rx8010: Fix for incorrect return value rtc: rx8010: Specify correct address for RX8010_RESV31 rtc: rx8010: Remove duplicate define rtc: m41t80: remove unneeded checks from m41t80_sqw_set_rate rtc: m41t80: avoid i2c read in m41t80_sqw_is_prepared rtc: m41t80: avoid i2c read in m41t80_sqw_recalc_rate rtc: m41t80: fix m41t80_sqw_round_rate return value rtc: m41t80: m41t80_sqw_set_rate should return 0 on success rtc: add support for NXP PCF85363 real-time clock rtc: omap: Support scratch registers ...
2017-11-20rtc: sc27xx: Add Spreadtrum SC27xx PMIC RTC driverBaolin Wang
This patch adds the Spreadtrum RTC driver, which embedded in the Spreadtrum SC27xx series PMICs. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-11-08rtc: add support for NXP PCF85363 real-time clockEric Nelson
Note that alarms are not currently implemented. 64 bytes of nvmem is supported and exposed in sysfs (# is the instance number, starting with 0): /sys/bus/nvmem/devices/pcf85363-#/nvmem Signed-off-by: Eric Nelson <eric@nelint.com> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Tested-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-26rtc: mediatek: add driver for RTC on MT7622 SoCSean Wang
This patch introduces the driver for the RTC on MT7622 SoC. Signed-off-by: Sean Wang <sean.wang@mediatek.com> Reviewed-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-09-05rtc: Add Realtek RTD1295Andreas Färber
Based on QNAP's arch/arm/mach-rtk119x/driver/rtk_rtc_drv.c code and mach-rtk119x/driver/dc2vo/fpga/include/mis_reg.h register definitions. The base year 2014 was observed on all of Zidoo X9S, ProBox2 Ava and Beelink Lake I. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-09-01rtc: goldfish: Add RTC driver for Android emulatorMiodrag Dinic
Add device driver for a virtual RTC device in Android emulator. The compatible string used by OS for binding the driver is defined as "google,goldfish-rtc". Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com> Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-07rtc: add generic nvmem supportAlexandre Belloni
Many RTCs have an on board non volatile storage. It can be battery backed RAM or an EEPROM. Use the nvmem subsystem to export it to both userspace and in-kernel consumers. This stays compatible with the previous (non documented) ABI that was using /sys/class/rtc/rtcx/device/nvram to export that memory. But will warn about the deprecation. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
generated by cgit (git 2.34.1) at 2024-06-13 05:17:03 +0000