clocksource/drivers/atmel-st: Remove useless 'status'

Fix the following coccicheck warning:

drivers/clocksource/timer-atmel-st.c:142:6-12: Unneeded variable:
"status". Return "0" on line 166

Signe

clocksource/drivers/atmel-st: Remove useless 'status'

Fix the following coccicheck warning:

drivers/clocksource/timer-atmel-st.c:142:6-12: Unneeded variable:
"status". Return "0" on line 166

Signed-off-by: Jason Yan <[email protected]>
Acked-by: Alexandre Belloni <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version 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 you
should have received a copy of the gnu general public license along
with this program if not write to the free software foundation inc
59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Richard Fontana <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE

The CLOCKSOURCE_OF_DECLARE macro is used widely for the timers to declare the
clocksource at early stage. However, this macro i

clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE

The CLOCKSOURCE_OF_DECLARE macro is used widely for the timers to declare the
clocksource at early stage. However, this macro is also used to initialize
the clockevent if any, or the clockevent only.

It was originally suggested to declare another macro to initialize a
clockevent, so in order to separate the two entities even they belong to the
same IP. This was not accepted because of the impact on the DT where splitting
a clocksource/clockevent definition does not make sense as it is a Linux
concept not a hardware description.

On the other side, the clocksource has not interrupt declared while the
clockevent has, so it is easy from the driver to know if the description is
for a clockevent or a clocksource, IOW it could be implemented at the driver
level.

So instead of dealing with a named clocksource macro, let's use a more generic
one: TIMER_OF_DECLARE.

The patch has not functional changes.

Signed-off-by: Daniel Lezcano <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Acked-by: Neil Armstrong <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Matthias Brugger <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>

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clocksource: Use a plain u64 instead of cycle_t

There is no point in having an extra type for extra confusion. u64 is
unambiguous.

Conversion was done with the following coccinelle script:

@rem@
@

clocksource: Use a plain u64 instead of cycle_t

There is no point in having an extra type for extra confusion. u64 is
unambiguous.

Conversion was done with the following coccinelle script:

@rem@
@@
-typedef u64 cycle_t;

@fix@
typedef cycle_t;
@@
-cycle_t
+u64

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: John Stultz <[email protected]>

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clocksources: Switch back to the clksrc table

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

clocksources: Switch back to the clksrc table

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 <[email protected]>

For exynos_mct and samsung_pwm_timer:
Acked-by: Krzysztof Kozlowski <[email protected]>

For arch/arc:
Acked-by: Vineet Gupta <[email protected]>

For mediatek driver:
Acked-by: Matthias Brugger <[email protected]>

For the Rockchip-part
Acked-by: Heiko Stuebner <[email protected]>

For STi :
Acked-by: Patrice Chotard <[email protected]>

For the mps2-timer.c and versatile.c changes:
Acked-by: Liviu Dudau <[email protected]>

For the OXNAS part :
Acked-by: Neil Armstrong <[email protected]>

For LPC32xx driver:
Acked-by: Sylvain Lemieux <[email protected]>

For Broadcom Kona timer change:
Acked-by: Ray Jui <[email protected]>

For Sun4i and Sun5i:
Acked-by: Chen-Yu Tsai <[email protected]>

For Meson6:
Acked-by: Carlo Caione <[email protected]>

For Keystone:
Acked-by: Santosh Shilimkar <[email protected]>

For NPS:
Acked-by: Noam Camus <[email protected]>

For bcm2835:
Acked-by: Eric Anholt <[email protected]>

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clocksource/drivers/atmel-st: Convert init function to return error

The init functions do not return any error. They behave as the following:

- panic, thus leading to a kernel crash while another

clocksource/drivers/atmel-st: Convert init function to return error

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 <[email protected]>

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clocksource: atmel-st: get and use slow clock

The current slow clock rate is hardcoded. Properly get the slow clock
and use its rate.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electr

clocksource: atmel-st: get and use slow clock

The current slow clock rate is hardcoded. Properly get the slow clock
and use its rate.

Signed-off-by: Alexandre Belloni <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>

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clockevents/drivers/atmel-st: Migrate to new 'set-state' interface

Migrate atmel-st driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked o

clockevents/drivers/atmel-st: Migrate to new 'set-state' interface

Migrate atmel-st driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

Cc: Nicolas Ferre <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Jean-Christophe Plagniol-Villard <[email protected]>
Signed-off-by: Viresh Kumar <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Acked-by: Alexandre Belloni <[email protected]>
Tested-by: Alexandre Belloni <[email protected]>

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clocksource: atmel-st: remove mach/hardware dependency

Remove the mach/hardware dependency to prepare the driver for multiplatform
support.
Also switch from setup_irq() to request_irq()

Signed-off-

clocksource: atmel-st: remove mach/hardware dependency

Remove the mach/hardware dependency to prepare the driver for multiplatform
support.
Also switch from setup_irq() to request_irq()

Signed-off-by: Alexandre Belloni <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>

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clocksource: atmel-st: use syscon/regmap

The register range from the system timer is also used by the watchdog driver.
Use a regmap to handle concurrent accesses.

Signed-off-by: Alexandre Belloni <

clocksource: atmel-st: use syscon/regmap

The register range from the system timer is also used by the watchdog driver.
Use a regmap to handle concurrent accesses.

Signed-off-by: Alexandre Belloni <[email protected]>
Acked-by: Boris Brezillon <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>

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ARM: at91: time: move the system timer driver to drivers/clocksource

Import at91rm9200_time.c from mach-at91 as timer-atmel-st.c. Further cleanup is
required to get rid of the mach-at91 headers.

Si

ARM: at91: time: move the system timer driver to drivers/clocksource

Import at91rm9200_time.c from mach-at91 as timer-atmel-st.c. Further cleanup is
required to get rid of the mach-at91 headers.

Signed-off-by: Alexandre Belloni <[email protected]>
Acked-by: Boris Brezillon <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>

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