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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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Printing with pr_* functions requires adding line break manually.
Signed-off-by: Rafał Miłecki <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
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<linux/sched/clock.h>
We are going to split <linux/sched/clock.h> out of <linux/sched.h>, which
will have to be picked up from other headers and .c files.
Create a trivial placeholder <linux/sched/clock.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.
Include the new header in the files that are going to need it.
Acked-by: Linus Torvalds <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>
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As both pxa and sa1100 provide a clock to the timer, the rate can be
inferred from the clock rather than hard encoded in a functional call.
This patch changes the pxa timer to have a mandatory clock which is used
as the timer rate.
Signed-off-by: Robert Jarzmik <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Acked-by: Russell King <[email protected]>
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We get 1 warning about global functions without a declaration in the
clocksource/drivers/pxa driver when building with W=1:
drivers/clocksource/pxa_timer.c:221:13: warning: no previous prototype for 'pxa_timer_nodt_init' [-Wmissing-prototypes]
void __init pxa_timer_nodt_init(int irq, void __iomem *base,
In fact, this function is declared in pxa.h, so this patch
add missing header dependencies.
Signed-off-by: Baoyou Xie <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
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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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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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Migrate pxa 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.
Both oneshot and shutdown modes had exactly same code and so only a
single callback is sufficient now, which will be called for both the
modes.
Cc: Robert Jarzmik <[email protected]>
Cc: Russell King <[email protected]>
Signed-off-by: Viresh Kumar <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Acked-by: Robert Jarzmik <[email protected]>
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As pxa_timer_common_init() is only called in init context, mark it as
such, and quiesce the compiler warnings :
WARNING: vmlinux.o(.text.unlikely+0x45d4): Section mismatch in reference
from the function pxa_timer_common_init() to the function
.init.text:sched_clock_register()
WARNING: vmlinux.o(.text.unlikely+0x4610): Section mismatch in reference
from the function pxa_timer_common_init() to the function
.init.text:clocksource_mmio_init()
Signed-off-by: Robert Jarzmik <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
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Add device-tree support to PXA platforms.
The driver still needs to maintain backward non device-tree
compatibility as well, which implies :
- a non device-tree init function
- a static registers base address in the driver
Signed-off-by: Robert Jarzmik <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
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Move time.c from arch/arm/mach-pxa/time.c to
drivers/clocksource/pxa_timer.c.
Signed-off-by: Robert Jarzmik <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
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