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* Merge tag 'rtc-5.2' of ↵Linus Torvalds2019-05-091-4/+15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "A huge series from me this cycle. I went through many drivers to set the date and time range supported by the RTC which helps solving HW limitation when the time comes (as early as next year for some). This time, I focused on drivers using .set_mms and .set_mmss64, allowing me to remove those callbacks. About a third of the patches got reviews, I actually own the RTCs and I tested another third and the remaining one are unlikely to cause any issues. Other than that, a single new driver and the usual fixes here and there. Summary: Subsystem: - set_mmss and set_mmss64 rtc_ops removal - Fix timestamp value for RTC_TIMESTAMP_BEGIN_1900 - Use SPDX identifier for the core - validate upper bound of tm->tm_year New driver: - Aspeed BMC SoC RTC Drivers: - abx80x: use rtc_add_group - ds3232: nvram support - pcf85063: add alarm, nvram, offset correction and microcrystal rv8263 support - x1205: add of_match_table - Use set_time instead of set_mms/set_mmss64 for: ab3100, coh901331, digicolor, ds1672, ds2404, ep93xx, imxdi, jz4740, lpc32xx, mc13xxx, mxc, pcap, stmp3xxx, test, wm831x, xgene. - Set RTC range for: ab3100, at91sam9, coh901331, da9063, digicolor, dm355evm, ds1672, ds2404, ep39xx, goldfish, imxdi, jz4740, lpc32xx, mc13xxx, mv, mxc, omap, pcap, pcf85063, pcf85363, ps3, sh, stmp3xxx, sun4v, tegra, wm831x, xgene. - Switch to rtc_time64_to_tm/rtc_tm_to_time64 for the driver that properly set the RTC range. - Use dev_get_drvdata instead of multiple indirections" * tag 'rtc-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (177 commits) rtc: snvs: Use __maybe_unused instead of #if CONFIG_PM_SLEEP rtc: imxdi: remove unused variable rtc: drop set_mms and set_mmss64 rtc: pcap: convert to SPDX identifier rtc: pcap: use .set_time rtc: pcap: switch to rtc_time64_to_tm/rtc_tm_to_time64 rtc: pcap: set range rtc: digicolor: convert to SPDX identifier rtc: digicolor: use .set_time rtc: digicolor: set range rtc: digicolor: fix possible race condition rtc: jz4740: convert to SPDX identifier rtc: jz4740: rework invalid time detection rtc: jz4740: use dev_pm_set_wake_irq() to simplify code rtc: jz4740: use .set_time rtc: jz4740: remove useless check rtc: jz4740: switch to rtc_time64_to_tm/rtc_tm_to_time64 rtc: jz4740: set range rtc: 88pm860x: prevent use-after-free on device remove rtc: Use dev_get_drvdata() ...
| * rtc: remove unnecessary Kconfig dependenciesAlexandre Belloni2019-04-041-2/+0
| | | | | | | | | | | | | | Remove the unused "depends on I2C" as the config options are already guarded by if I2C. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| * rtc: pcf85063: switch to regmapAlexandre Belloni2019-04-041-0/+1
| | | | | | | | | | | | | | Switch to regmap to simplify register accesses and remove the need for pcf85063_stop_clock/pcf85063_start_clock. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| * rtc: Add ASPEED RTC driverJoel Stanley2019-04-041-0/+11
| | | | | | | | | | | | | | | | 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>
| * rtc: at91sam9: drop platform_data supportAlexandre Belloni2019-04-041-1/+1
| | | | | | | | | | | | | | ARCH_AT91 is DT only for a while, drop platform data support. Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| * rtc: goldfish: allow building on more than MIPSAlexandre Belloni2019-04-041-1/+2
| | | | | | | | | | | | | | Goldfish can be ARM or x86, allow building the driver for more than just MIPS. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* | rtc: sd3078: fix manufacturer nameAlexandre Belloni2019-03-201-2/+2
|/ | | | | | The proper manufacturer name is Shenzhen whwave. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* Merge tag 'tag-chrome-platform-for-v5.1' of ↵Linus Torvalds2019-03-121-0/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
| * platform/chrome: wilco_ec: Add RTC driverNick Crews2019-02-211-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | rtc: rx8581: Add support for Epson rx8571 RTCBiju Das2019-03-021-2/+3
| | | | | | | | | | | | | | | | | | | | | | Add support for Epson rx8571 real-time clock. rx8571 rtc is compatible with rx8581,except that rx8571 has additional 16 bytes of RAM. 16 bytes of nvmem is supported and exposed in sysfs (# is the instance number,starting with 0): /sys/bus/nvmem/devices/rx8571-#/nvmem Signed-off-by: Biju Das <biju.das@bp.renesas.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* | rtc: add AB-RTCMC-32.768kHz-EOZ9 RTC supportArtem Panfilov2019-02-181-0/+10
| | | | | | | | | | | | | | | | 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>
* | rtc: hid-sensor-time: stop selecting IIOAlexandre Belloni2019-02-171-2/+1
| | | | | | | | | | | | | | | | 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>
* | rtc: rv3028: add new driverAlexandre Belloni2019-02-171-0/+9
| | | | | | | | | | | | | | | | | | | | | | 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>
* | rtc: support for the Amlogic Meson RTCMartin Blumenstingl2019-02-111-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | rtc: imx-sc: depend on HAVE_ARM_SMCCCAlexandre Belloni2019-02-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | 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>
* | rtc: Add Cadence RTC driverJan Kotas2019-01-221-0/+10
| | | | | | | | | | | | | | | | | | | | 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>
* | rtc: sd3078: new driver.Dianlong Li2019-01-101-0/+9
|/ | | | | | | 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>
* rtc: add i.MX system controller RTC supportAnson Huang2018-12-201-0/+7
| | | | | | | | | | | | | | | | | 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>
* rtc: ds1685: drop RTC_DS1685_PROC_REGSAlexandre Belloni2018-09-281-11/+0
| | | | | | | | /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>
* rtc: abx80x: add basic watchdog supportJeremy Gebben2018-09-121-0/+1
| | | | | | | | | 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>
* rtc: jz4740: Drop dependency on MACH_INGENICPaul Cercueil2018-08-271-1/+1
| | | | | | | | | 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>
* rtc: ds1307: simplify hwmon configHeiner Kallweit2018-08-161-9/+0
| | | | | | | | | | 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>
* rtc: ds1685: remove sysfs access to control registersAlexandre Belloni2018-06-201-12/+0
| | | | | | | Access to the control registers is mostly not needed and can cause runtime issues (like missed interrupts). Remove this debugging interface. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: jz4740: Fix a typo in KconfigMathieu Malaterre2018-05-311-1/+1
| | | | | | | | Fix typo introduced for RTC_DRV_JZ4740 in commit 586655d278ba ("rtc: jz4740: make the driver buildable as a module again"). Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* Merge tag 'rtc-4.17' of ↵Linus Torvalds2018-04-101-1/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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() ...
| * rtc: at91sam: add 'depends on HAS_IOMEM' to fix unmet dependencyMasahiro Yamada2018-03-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | This config select's MFD_SYSCON, but does not depend on HAS_IOMEM. Compile testing on architecture without HAS_IOMEM causes "unmet direct dependencies" in Kconfig phase. Detected by "make ARCH=score allyesconfig". Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| * rtc: isl12026: new driver.David Daney2018-03-171-0/+10
| | | | | | | | | | | | | | | | | | | | | | 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>
| * rtc: tx4939: extend test coverageAlexandre Belloni2018-03-011-1/+1
| | | | | | | | | | | | | | The rtc-tx4939 driver now compiles correctly on other architectures, add COMPILE_TEST to improve code coverage. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* | rtc: remove bfin driverArnd Bergmann2018-03-261-10/+0
| | | | | | | | | | | | | | | | | | 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>
* | rtc: remove tile driverArnd Bergmann2018-03-261-7/+0
| | | | | | | | | | | | | | | | 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>
* | treewide: simplify Kconfig dependencies for removed archsArnd Bergmann2018-03-261-1/+1
| | | | | | | | | | | | | | | | | | | | A lot of Kconfig symbols have architecture specific dependencies. In those cases that depend on architectures we have already removed, they can be omitted. Acked-by: Kalle Valo <kvalo@codeaurora.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | mn10300: Remove the architectureDavid Howells2018-03-091-1/+1
|/ | | | | | | | | | Remove the MN10300 arch as the hardware is defunct. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David Howells <dhowells@redhat.com> cc: Masahiro Yamada <yamada.masahiro@socionext.com> cc: linux-am33-list@redhat.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* rtc: remove rtc-at32ap700xCorentin Labbe2018-01-191-7/+0
| | | | | | | | | | 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>
* rtc: add mxc driver for i.MX53 SRTCPatrick Bruenn2018-01-121-0/+10
| | | | | | | | | | | | | | | | | 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>
* rtc: cros-ec: add cros-ec-rtc driver.Stephen Barber2017-12-181-0/+10
| | | | | | | | | | | | | 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>
* rtc: sc27xx: Add Spreadtrum SC27xx PMIC RTC driverBaolin Wang2017-11-201-0/+11
| | | | | | | | 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>
* rtc: add support for NXP PCF85363 real-time clockEric Nelson2017-11-081-0/+13
| | | | | | | | | | | | | | | 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>
* rtc: mediatek: enhance the description for MediaTek PMIC based RTCSean Wang2017-10-261-4/+4
| | | | | | | | | | | Give a better description for original MediaTek RTC driver as PMIC based RTC in order to distinguish SoC based RTC. Also turning all words with Mediatek to MediaTek here. Cc: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Acked-by: Eddie Huang <eddie.huang@mediatek.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: mediatek: add driver for RTC on MT7622 SoCSean Wang2017-10-261-0/+10
| | | | | | | | 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>
* rtc: Add Realtek RTD1295Andreas Färber2017-09-051-0/+8
| | | | | | | | | | | 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>
* rtc: goldfish: Add RTC driver for Android emulatorMiodrag Dinic2017-09-011-0/+8
| | | | | | | | | | | | 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>
* rtc: ds1307: add basic support for ds1341 chipNikita Yushchenko2017-09-011-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for reading and writing date/time from/to ds1341 chip. ds1341 chip has other features - alarms, input clock (can be used instead of intercal oscillator for better accuracy), output clock ("square wave generation"). However, not all of that is available at the same time. Same chip pins, CLKIN/nINTA and SQW/nINTB, can be used either for input/output clocks, or for alarm interrupts. Role of these pins on particular board depends on hardware wiring. We can add device tree properties that describe if each of pins is wired as clock, or as interrupt, or left unconnected, and enable support for corresponding functionality based on that. But that is cumbersome, requires hardware for testing, and has to deal with bit enabling/disabling output clock also affects which pins alarm interrupts are routed to. Another factor is that there are hardware setups (i.e. ZII RDU2) that power DS1341 from SuperCap, which makes power saving critical. For such setups, kernel driver should leave register bits that control mentioned pins in the state configured by bootloader. Given all that, it was decided to limit support to "only date/time" for now. That is enough for common use case. Full (and cumbersome) implementation can be added later if ever needed. Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: rk808: Name RK805 in Kconfig for RTC_DRV_RK808Elaine Zhang2017-09-011-2/+2
| | | | | | | | | | The RK808 and RK805 PMICs are using a similar register map. We can reuse the rtc driver for the RK805 PMIC. So let's add the RK805 in the Kconfig description. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> Signed-off-by: Joseph Chen <chenjh@rock-chips.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: add generic nvmem supportAlexandre Belloni2017-07-071-0/+8
| | | | | | | | | | | | 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>
* rtc: ds3232: add temperature supportKirill Esipov2017-07-061-0/+8
| | | | | | | | | | | DS3232/DS3234 has the temperature registers with a resolution of 0.25 degree celsius. This enables to get the value through hwmon. # cat /sys/class/hwmon/hwmon0/temp1_input 37250 Signed-off-by: Kirill Esipov <yesipov@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: gemini/ftrtc010: rename driver and symbolsLinus Walleij2017-07-061-5/+5
| | | | | | | | | | | | | | | | | | | The Gemini RTC is actually a generic IP block from Faraday Technology names FTRTC010. Rename the driver file and all symbols to match this IP name. The relationship can be clearly seen in the U-Boot driver posted by Po-Yu Chuang for the Faraday A320 board: https://lists.denx.de/pipermail/u-boot/2009-September/061326.html Remove the dependency on ARCH_GEMINI but select the driver for ARCH_GEMINI so we get a smooth transition. The IP block is synthsized on different silicon and architectures. Cc: Po-Yu Chuang <ratbert@faraday-tech.com> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: brcmstb-waketimer: Add Broadcom STB wake-timerBrian Norris2017-07-051-0/+11
| | | | | | | | | | | | | This adds support for the Broadcom STB wake-timer which is a timer in the chip's 27Mhz clock domain that offers the ability to wake the system (wake-up source) from suspend states (S2, S3, S5). It is supported using the rtc framework allowing us to configure alarms for system wake-up. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Markus Mayer <mmayer@broadcom.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: sh: add support for rza seriesChris Brandt2017-04-031-2/+2
| | | | | | | | | | This same RTC is used in RZ/A series MPUs, therefore with some slight changes, this driver can be reused. Additionally, since ARM architectures require Device Tree configurations, device tree support has been added. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: cpcap: new rtc driverSebastian Reichel2017-03-091-0/+7
| | | | | | | | | | This driver supports the Motorola CPCAP PMIC found on some of Motorola's mobile phones, such as the Droid 4. Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sebastian Reichel <sre@kernel.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* Merge tag 'rtc-4.11' of ↵Linus Torvalds2017-02-271-3/+15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Subsystem: - constify rtc_class_ops structures New driver: - STM32 Drivers: - armada38x: fix errata, Armada 7K/8K support - ds3232: fix wakeup support - gemini: DT support - m48t86: huge cleanup and platform_data removal - mcp795: alarm support - sun6i: proper oscillator handling - tegra: proper clock handling - tps65910: calibration support" * tag 'rtc-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (44 commits) rtc: ds3232: Call device_init_wakeup before device_register rtc: pcf2127: bulk read only date and time registers. rtc: armada38x: Add support for Armada 7K/8K rtc: armada38x: Prepare driver to manage different versions rtc: ds3232: Add regmap max_register definition. rtc: ds3232: Cleanup whitespace around register and bit definitions. rtc: m48t86: remove unused platform_data ARM: Orion5x: ts78xx: allow rtc-m48t86 to manage it's own resources ARM: Orion5x: ts78xx: remove RTC detection ARM: ep93xx: ts72xx: allow rtc-m48t86 to manage its own resources rtc: m48t86: verify that the RTC is actually present rtc: m48t86: add NVRAM support rtc: m48t86: allow driver to manage its resources rtc: m48t86: shorten register name defines bindings: rtc: correct wrong reference in required properties rtc: sun6i: Fix return value check in sun6i_rtc_clk_init() rtc: sun6i: extend test coverage rtc: sun6i: Fix compatibility with old DT binding rtc: snvs: add a missing write sync rtc: bq32000: add support to enable disable the trickle charge FET bypass ...
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