linux/arch/arc/kernel/time.c, branch v4.9

ARC: timer: rtc: implement read loop in "C" vs. inline asm

2016-11-07T19:19:44Z

The current code doesn't even compile as somehow the inline assembly can't see the register names defined as ARC_RTC_* I'm pretty sure It worked when I first got it merged, but the tools were definitely different then. So better to write this in "C" anyways. CC: stable@vger.kernel.org #4.2+ Acked-by: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC/time: Convert to hotplug state machine

2016-07-15T08:41:46Z

Install the callbacks via the state machine. Signed-off-by: Anna-Maria Gleixner Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vineet Gupta Cc: linux-snps-arc@lists.infradead.org Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160713153338.391826254@linutronix.de Signed-off-by: Ingo Molnar

clocksources: Switch back to the clksrc table

2016-06-28T08:19:35Z

All the clocksource drivers's init function are now converted to return an error code. CLOCKSOURCE_OF_DECLARE is no longer used as well as the clksrc-of table. Let's convert back the names: - CLOCKSOURCE_OF_DECLARE_RET => CLOCKSOURCE_OF_DECLARE - clksrc-of-ret => clksrc-of Signed-off-by: Daniel Lezcano For exynos_mct and samsung_pwm_timer: Acked-by: Krzysztof Kozlowski For arch/arc: Acked-by: Vineet Gupta For mediatek driver: Acked-by: Matthias Brugger For the Rockchip-part Acked-by: Heiko Stuebner For STi : Acked-by: Patrice Chotard For the mps2-timer.c and versatile.c changes: Acked-by: Liviu Dudau For the OXNAS part : Acked-by: Neil Armstrong For LPC32xx driver: Acked-by: Sylvain Lemieux For Broadcom Kona timer change: Acked-by: Ray Jui For Sun4i and Sun5i: Acked-by: Chen-Yu Tsai For Meson6: Acked-by: Carlo Caione For Keystone: Acked-by: Santosh Shilimkar For NPS: Acked-by: Noam Camus For bcm2835: Acked-by: Eric Anholt

clocksource/drivers/arc: Convert init function to return error

2016-06-28T08:19:35Z

The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano

ARC: clocksource: DT based probe

2016-05-09T04:02:30Z

- Remove explicit clocksource setup and let it be done by OF framework by defining CLOCKSOURCE_OF_DECLARE() for various timers - This allows multiple clocksources to be potentially registered simultaneouly: previously we could only do one - as all of them had same arc_counter_setup() routine for registration - Setup routines also ensure that the underlying timer actually exists. - Remove some of the panic() calls if underlying timer is NOT detected as fallback clocksource might still be available 1. If GRFC doesn't exist, jiffies clocksource gets registered anyways 2. if RTC doesn't exist, TIMER1 can take over (as it is always present) Cc: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC: clockevent: DT based probe

2016-05-09T04:02:29Z

- timer frequency is derived from DT (no longer rely on top level DT "clock-frequency" probed early and exported by asm/clk.h) - TIMER0_IRQ need not be exported across arch code, confined to intc as it is property of same - Any failures in clockevent setup are considered pedantic and system panic()'s as there is no generic fallback (unlike clocksource where a jiffies based soft clocksource always exists) Acked-by: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC: clockevent: Prepare for DT based probe

2016-05-09T04:02:29Z

- call clocksource_probe() - This in turns needs of_clk_init() to be called earlier Cc: Daniel Lezcano Signed-off-by: Noam Camus [vgupta: broken off from a bigger patch] Signed-off-by: Vineet Gupta

ARC: clockevent: switch to cpu notifier for clockevent setup

2016-05-09T04:02:28Z

ARC Timers so far have been handled as "legacy" w/o explicit description in DT. This poses challenge for newer platforms wanting to use them. This series will eventually help move timers over to DT. This patch does a small change of using a CPU notifier to set clockevent on non-boot CPUs. So explicit setup is done only on boot CPU (which will later be done by DT) Signed-off-by: Noam Camus [vgupta: broken off from a bigger patch] Signed-off-by: Vineet Gupta

ARC: opencode arc_request_percpu_irq

2016-05-09T04:02:28Z

- The idea is to remove the API usage since it has a subltle design flaw - relies on being called on cpu0 first. This is true for some early per cpu irqs such as TIMER/IPI, but not for late probed per cpu peripherals such a perf. And it's usage in perf has already bitten us once: see c6317bc7c5ab ("ARCv2: perf: Ensure perf intr gets enabled on all cores") where we ended up open coding it anyways - The seeming duplication will go away once we start using cpu notifier for timer setup Signed-off-by: Vineet Gupta

ARC: Fix misspellings in comments.

2016-03-11T09:29:53Z

Signed-off-by: Adam Buchbinder Signed-off-by: Vineet Gupta