linux-toradex.git/drivers/clocksource/bcm2835_timer.c, branch v4.13-rc5

clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE

2017-06-14T09:58:45+00:00

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 
Acked-by: Heiko Stuebner 
Acked-by: Neil Armstrong 
Acked-by: Arnd Bergmann 
Acked-by: Matthias Brugger 
Reviewed-by: Linus Walleij

clocksource: Add missing line break to error messages

2017-04-07T14:23:04+00:00

Printing with pr_* functions requires adding line break manually.

Signed-off-by: Rafał Miłecki 
Acked-by: Thierry Reding 
Signed-off-by: Daniel Lezcano

clocksource/drivers/bcm2835_timer: Unmap region obtained by of_iomap

2016-11-22T08:22:59+00:00

Free memory mapping, if bcm2835_timer_init is not successful.

Signed-off-by: Arvind Yadav 
Reviewed-by: Eric Anholt 
Signed-off-by: Daniel Lezcano

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

clocksource/drivers/bcm2835_timer: Convert init function to return error

2016-06-28T08:19:21+00:00

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 
Acked-by: Eric Anholt

clockevents/drivers/bcm2835: Migrate to new 'set-state' interface

2015-08-06T10:16:41+00:00

Migrate bcm2835 driver to the new 'set-state' interface provided by
the 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.

We weren't doing anything in the ->set_mode() callback. So, this patch
doesn't provide any set-state callbacks.

Acked-by: Daniel Lezcano 
Tested-by: Stephen Warren 
Cc: Stephen Warren 
Cc: Lee Jones 
Signed-off-by: Viresh Kumar 
Signed-off-by: Daniel Lezcano

clocksource: bcm2835: Switch to sched_clock_register()

2013-07-30T18:24:51+00:00

The 32 bit sched_clock interface now supports 64 bits. Upgrade to
the 64 bit function to allow us to remove the 32 bit registration
interface.

Cc: Stephen Warren 
Acked-by: Stephen Warren 
Signed-off-by: Stephen Boyd 
Signed-off-by: John Stultz

sched_clock: Make ARM's sched_clock generic for all architectures

2013-06-12T21:02:13+00:00

Nothing about the sched_clock implementation in the ARM port is
specific to the architecture. Generalize the code so that other
architectures can use it by selecting GENERIC_SCHED_CLOCK.

Signed-off-by: Stephen Boyd 
[jstultz: Merge minor collisions with other patches in my tree]
Signed-off-by: John Stultz

clocksource: pass DT node pointer to init functions

2013-03-11T13:42:07+00:00

In cases where we have multiple nodes of the same type, we may need the
node pointer to know which node was matched. Passing the node pointer
also keeps the init function from having to match the node a 2nd time.

Update bcm2835, vt8500, and tegra20 init functions for the new function
prototype. Further tegra20 clean-ups are in follow-up commit.

Signed-off-by: Rob Herring 
Cc: John Stultz 
Cc: Thomas Gleixner 
Reviewed-by: Stephen Warren 
Tested-by: Stephen Warren 
Acked-by: Arnd Bergmann 
Acked-by: Tony Prisk 
Tested-by: Michal Simek

ARM: bcm2835: make use of CLKSRC_OF

2013-01-15T04:45:58+00:00

Using CLKSRC_OF enables deletion of the SoC-specific header
bcm2835_timer.h, replacing the custom function bcm2835_timer_init() with
the standardized automatic clocksource_of_init().

Signed-off-by: Stephen Warren