lwn.git/arch/arc/kernel/time.c, branch docs-6.1

clocksource: import ARC timer driver

2016-11-30T19:54:25+00:00

This adds support for - CONFIG_ARC_TIMERS : legacy 32-bit TIMER0 and TIMER1 which count UP from @CNT to @LIMIT, before optionally triggering an interrupt. These are programmed using ARC auxiliary register interface. These are present in all ARC cores (ARC700 and ARC HS38) TIMER0 serves as clockevent for all ARC linux builds. TIMER1 is used for clocksource in arc700 builds. - CONFIG_ARC_TIMERS_64BIT: 64-bit counters, RTC and GFRC found in ARC HS38 cores. These are independnet IP blocks with different programming model respectively. Link: http://lkml.kernel.org/r/20161111231132.GA4186@mai Acked-by: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC: breakout timer include code into separate header ...

2016-11-30T19:54:25+00:00

... which allows for use in drivers/clocksource later Signed-off-by: Vineet Gupta

ARC: move mcip.h into include/soc and adjust the includes

2016-11-30T19:54:25+00:00

Also remove the dependency on ARCv2, to increase compile coverage for !ARCV2 builds Acked-by: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC: time: move time_init() out of the driver

2016-11-30T19:54:25+00:00

to allow future git mv of the driver into drivers/clocksource Acked-by: Daniel Lezcano Signed-off-by: Vineet Gupta

ARC: timer: gfrc, rtc: build under same option (64-bit timers)

2016-11-30T19:54:25+00:00

The original distinction was done as they were developed at different times and primarily because they are specific to UP (RTC) and SMP (GFRC). But given that driver handles that at runtime, (i.e. not allowing RTC as clocksource in SMP), we can simplify things a bit. Signed-off-by: Vineet Gupta

ARC: timer: gfrc, rtc: Read BCR to detect whether hardware exists ...

2016-11-30T19:54:25+00:00

... don't rely on cpuinfo populated in arc boot code. This paves way for moving this code in drivers/clocksource/ And while at it, convert the WARN() to pr_warn() as sugested by Daniel Signed-off-by: Vineet Gupta

ARC: timer: gfrc, rtc: deuglify big endian code

2016-11-30T19:54:25+00:00

A standard "C" shift will be handled appropriately by the compiler depending on the endian for the build. So we don't need the explicit distinction in code Signed-off-by: Vineet Gupta

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

2016-11-07T19:19:44+00:00

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

2016-07-15T08:41:46+00:00

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

2016-06-28T08:19:35+00:00

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