linux/drivers/rtc, branch v4.19

Merge tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2018-08-20T23:30:27Z

Pull RTC updates from Alexandre Belloni: "It is now possible to add custom sysfs attributes while avoiding a possible race condition. Unused code has been removed resulting in a nice reduction of the code base. And more drivers have been switched to SPDX by their maintainers. Summary: Subsystem: - new helpers to add custom sysfs attributes - struct rtc_task removal along with rtc_irq_[un]register() - rtc_irq_set_state and rtc_irq_set_freq are not exported anymore Drivers: - armada38x: reset after rtc power loss - ds1307: now supports m41t11 - isl1208: now supports isl1219 and tamper detection - pcf2127: internal SRAM support" * tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits) rtc: ds1307: simplify hwmon config rtc: s5m: Add SPDX license identifier rtc: maxim: Add SPDX license identifiers rtc: isl1219: add device tree documentation rtc: isl1208: set ev-evienb bit from device tree rtc: isl1208: Add "evdet" interrupt source for isl1219 rtc: isl1208: add support for isl1219 with tamper detection rtc: sysfs: facilitate attribute add to rtc device rtc: remove struct rtc_task char: rtc: remove task handling rtc: pcf85063: preserve control register value between stop and start rtc: sh: remove unused variable rtc_dev rtc: unexport rtc_irq_set_* rtc: simplify rtc_irq_set_state/rtc_irq_set_freq rtc: remove irq_task and irq_task_lock rtc: remove rtc_irq_register/rtc_irq_unregister rtc: sh: remove dead code rtc: sa1100: don't set PIE frequency rtc: ds1307: support m41t11 variant rtc: ds1307: fix data pointer to m41t0 ...

rtc: ds1307: simplify hwmon config

2018-08-16T05:46:41Z

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 Signed-off-by: Alexandre Belloni

rtc: s5m: Add SPDX license identifier

2018-08-14T21:38:47Z

Replace GPL v2.0+ license statement with SPDX license identifier. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Alexandre Belloni

rtc: maxim: Add SPDX license identifiers

2018-08-14T21:38:45Z

Replace GPL v2.0+ license statements with SPDX license identifiers. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Alexandre Belloni

rtc: isl1208: set ev-evienb bit from device tree

2018-08-14T21:22:27Z

Add support to disable event in pull-up. Signed-off-by: Denis Osterland Signed-off-by: Alexandre Belloni

rtc: isl1208: Add "evdet" interrupt source for isl1219

2018-08-14T21:03:19Z

Add support for "evdet" named interrupt source. The check if i2c client irq matches evdet irq is needed for the case that there is only one interrupt named "evdet". In this case i2c client code handles this like an unnamed interrupt souce and assigns the value. Signed-off-by: Denis Osterland Reviewed-by: Michael Grzeschik Signed-off-by: Alexandre Belloni

rtc: isl1208: add support for isl1219 with tamper detection

2018-08-14T21:00:58Z

We add support for the ISL1219 chip that got an integrated tamper detection function. This patch implements the feature by adding an additional timestamp0 file to sysfs device path. This file contains seconds since epoch, if an event occurred, or is empty, if none occurred. Signed-off-by: Michael Grzeschik Signed-off-by: Denis Osterland Signed-off-by: Alexandre Belloni

rtc: sysfs: facilitate attribute add to rtc device

2018-08-14T20:56:27Z

This patches addresses following problem: rtc_allocate_device devm_device_add_group <-- kernel oops / null pointer, because sysfs entry does not yet exist rtc_register_device rc = devm_device_add_group if (rc) return rc; <-- forbidden to return error code after device register This patch adds rtc_add_group(s) functions. The functions store the sum of attribute groups as device resource. Signed-off-by: Denis Osterland Signed-off-by: Alexandre Belloni

rtc: remove struct rtc_task

2018-08-02T15:16:05Z

Include rtc_task members directly in rtc_timer member. Signed-off-by: Alexandre Belloni

rtc: pcf85063: preserve control register value between stop and start

2018-07-28T12:49:25Z

Fix a bug that caused the Control_1 register to get zeroed whenever the RTC time is set. The problem occurred between stopping and starting the RTC clock, wherein the return value of a successful I2C write function would get written to the register. Also update variables of the start and stop functions to be more consistent with the rest of the driver. Signed-off-by: Alvin Šipraga Signed-off-by: Alexandre Belloni