kernel/git/stable/linux.git/drivers/clocksource/timer-tegra20.c, branch master

clocksource/drivers/tegra: Rename timer-tegra20.c to timer-tegra.c

2019-06-25T17:49:18+00:00

Rename driver's source file to better reflect that it's not specific to older SoC generations. Suggested-by: Daniel Lezcano Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Lower clocksource rating for some Tegra's

2019-06-25T17:49:18+00:00

Arch-timer is more preferable for a range of Tegra SoC generations as it has higher precision and is not affect by any kind of problems. Pointed-out-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Minor code clean up

2019-06-25T17:49:18+00:00

Correct typo and use proper upper casing for acronyms in the comments, use common style for error messages, prepend error messages with "tegra-timer:", add error message for cpuhp_setup_state() failure and clean up whitespaces in the code to fix checkpatch warnings. Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Release all IRQ's on request_irq() error

2019-06-25T17:49:18+00:00

Release all requested IRQ's on the request error to properly clean up allocated resources. Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Replace readl/writel with relaxed versions

2019-06-25T17:49:18+00:00

The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Reset hardware state on init

2019-06-25T17:49:18+00:00

Reset timer's hardware state to ensure that initially it is in a predictable state. Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Unify timer code

2019-06-25T17:49:18+00:00

Tegra132 is 64bit platform and it has the tegra20-timer hardware unit. Right now the corresponding timer code isn't compiled for ARM64, remove ifdef'iness from the code and compile tegra20-timer for both 32 and 64 bit platforms. Also note that like the older generations, Tegra210 has the microseconds counter, hence the timer_us clocksource is now made available for Tegra210 as well. Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

clocksource/drivers/tegra: Support per-CPU timers on all Tegra's

2019-06-25T17:49:18+00:00

Assign TMR1-4 per-CPU core on 32bit Tegra's in a way it is done for Tegra210. In a result each core can handle its own timer events, less code is unique to ARM64 and Tegra's clock events driver now has higher rating on all Tegra's, replacing the ARM's TWD timer which isn't very accurate due to the clock rate jitter caused by CPU frequency scaling. Signed-off-by: Dmitry Osipenko Acked-By: Peter De Schrijver Signed-off-by: Daniel Lezcano

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282

2019-06-05T15:36:37+00:00

Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman

clocksource/drivers/tegra: Rework for compensation of suspend time

2019-05-02T19:55:58+00:00

Since the clocksource framework has the support for suspend time compensation. Re-work the driver to use that, so we can reduce the duplicate code. Suggested-by: Daniel Lezcano Signed-off-by: Joseph Lo Acked-by: Thierry Reding Signed-off-by: Daniel Lezcano