* [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init
@ 2015-11-12 18:40 ` Daniel Lezcano
0 siblings, 0 replies; 6+ messages in thread
From: Daniel Lezcano @ 2015-11-12 18:40 UTC (permalink / raw)
To: daniel.lezcano
Cc: tglx, linux-kernel, Maxime Ripard, moderated list:ARM/Allwinner A1X...
The current code to initialize, register and read the clocksource is
already factored out in mmio.c via the clocksource_mmio_init function.
The only difference is the readl vs readl_relaxed.
Factor out the code with the clocksource_mmio_init function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
drivers/clocksource/timer-sun5i.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)
diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c
index bca9573..55d7258 100644
--- a/drivers/clocksource/timer-sun5i.c
+++ b/drivers/clocksource/timer-sun5i.c
@@ -152,13 +152,6 @@ static irqreturn_t sun5i_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static cycle_t sun5i_clksrc_read(struct clocksource *clksrc)
-{
- struct sun5i_timer_clksrc *cs = to_sun5i_timer_clksrc(clksrc);
-
- return ~readl(cs->timer.base + TIMER_CNTVAL_LO_REG(1));
-}
-
static int sun5i_rate_cb_clksrc(struct notifier_block *nb,
unsigned long event, void *data)
{
@@ -217,13 +210,8 @@ static int __init sun5i_setup_clocksource(struct device_node *node,
writel(TIMER_CTL_ENABLE | TIMER_CTL_RELOAD,
base + TIMER_CTL_REG(1));
- cs->clksrc.name = node->name;
- cs->clksrc.rating = 340;
- cs->clksrc.read = sun5i_clksrc_read;
- cs->clksrc.mask = CLOCKSOURCE_MASK(32);
- cs->clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS;
-
- ret = clocksource_register_hz(&cs->clksrc, rate);
+ ret = clocksource_mmio_init(base + TIMER_CNTVAL_LO_REG(1), node->name,
+ rate, 340, UINT_MAX, clocksource_mmio_readl_down);
if (ret) {
pr_err("Couldn't register clock source.\n");
goto err_remove_notifier;
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init
@ 2015-11-12 18:40 ` Daniel Lezcano
0 siblings, 0 replies; 6+ messages in thread
From: Daniel Lezcano @ 2015-11-12 18:40 UTC (permalink / raw)
To: linux-arm-kernel
The current code to initialize, register and read the clocksource is
already factored out in mmio.c via the clocksource_mmio_init function.
The only difference is the readl vs readl_relaxed.
Factor out the code with the clocksource_mmio_init function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
drivers/clocksource/timer-sun5i.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)
diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c
index bca9573..55d7258 100644
--- a/drivers/clocksource/timer-sun5i.c
+++ b/drivers/clocksource/timer-sun5i.c
@@ -152,13 +152,6 @@ static irqreturn_t sun5i_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static cycle_t sun5i_clksrc_read(struct clocksource *clksrc)
-{
- struct sun5i_timer_clksrc *cs = to_sun5i_timer_clksrc(clksrc);
-
- return ~readl(cs->timer.base + TIMER_CNTVAL_LO_REG(1));
-}
-
static int sun5i_rate_cb_clksrc(struct notifier_block *nb,
unsigned long event, void *data)
{
@@ -217,13 +210,8 @@ static int __init sun5i_setup_clocksource(struct device_node *node,
writel(TIMER_CTL_ENABLE | TIMER_CTL_RELOAD,
base + TIMER_CTL_REG(1));
- cs->clksrc.name = node->name;
- cs->clksrc.rating = 340;
- cs->clksrc.read = sun5i_clksrc_read;
- cs->clksrc.mask = CLOCKSOURCE_MASK(32);
- cs->clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS;
-
- ret = clocksource_register_hz(&cs->clksrc, rate);
+ ret = clocksource_mmio_init(base + TIMER_CNTVAL_LO_REG(1), node->name,
+ rate, 340, UINT_MAX, clocksource_mmio_readl_down);
if (ret) {
pr_err("Couldn't register clock source.\n");
goto err_remove_notifier;
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init
2015-11-12 18:40 ` Daniel Lezcano
@ 2015-11-12 23:31 ` Maxime Ripard
-1 siblings, 0 replies; 6+ messages in thread
From: Maxime Ripard @ 2015-11-12 23:31 UTC (permalink / raw)
To: Daniel Lezcano; +Cc: tglx, linux-kernel, moderated list:ARM/Allwinner A1X...
[-- Attachment #1: Type: text/plain, Size: 596 bytes --]
On Thu, Nov 12, 2015 at 07:40:13PM +0100, Daniel Lezcano wrote:
> The current code to initialize, register and read the clocksource is
> already factored out in mmio.c via the clocksource_mmio_init function.
>
> The only difference is the readl vs readl_relaxed.
>
> Factor out the code with the clocksource_mmio_init function.
>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init
@ 2015-11-12 23:31 ` Maxime Ripard
0 siblings, 0 replies; 6+ messages in thread
From: Maxime Ripard @ 2015-11-12 23:31 UTC (permalink / raw)
To: linux-arm-kernel
On Thu, Nov 12, 2015 at 07:40:13PM +0100, Daniel Lezcano wrote:
> The current code to initialize, register and read the clocksource is
> already factored out in mmio.c via the clocksource_mmio_init function.
>
> The only difference is the readl vs readl_relaxed.
>
> Factor out the code with the clocksource_mmio_init function.
>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init
2015-11-12 23:31 ` Maxime Ripard
@ 2015-11-13 14:27 ` Daniel Lezcano
-1 siblings, 0 replies; 6+ messages in thread
From: Daniel Lezcano @ 2015-11-13 14:27 UTC (permalink / raw)
To: Maxime Ripard; +Cc: tglx, linux-kernel, moderated list:ARM/Allwinner A1X...
On 11/13/2015 12:31 AM, Maxime Ripard wrote:
> On Thu, Nov 12, 2015 at 07:40:13PM +0100, Daniel Lezcano wrote:
>> The current code to initialize, register and read the clocksource is
>> already factored out in mmio.c via the clocksource_mmio_init function.
>>
>> The only difference is the readl vs readl_relaxed.
>>
>> Factor out the code with the clocksource_mmio_init function.
>>
>> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
>
> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Thanks for the review. I applied the patch with a fix:
ret = clocksource_mmio_init(base + TIMER_CNTVAL_LO_REG(1),
node->name,
rate, 340, UINT_MAX,
clocksource_mmio_readl_down);
Replaced UINT_MAX by '32'.
-- Daniel
--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init
@ 2015-11-13 14:27 ` Daniel Lezcano
0 siblings, 0 replies; 6+ messages in thread
From: Daniel Lezcano @ 2015-11-13 14:27 UTC (permalink / raw)
To: linux-arm-kernel
On 11/13/2015 12:31 AM, Maxime Ripard wrote:
> On Thu, Nov 12, 2015 at 07:40:13PM +0100, Daniel Lezcano wrote:
>> The current code to initialize, register and read the clocksource is
>> already factored out in mmio.c via the clocksource_mmio_init function.
>>
>> The only difference is the readl vs readl_relaxed.
>>
>> Factor out the code with the clocksource_mmio_init function.
>>
>> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
>
> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Thanks for the review. I applied the patch with a fix:
ret = clocksource_mmio_init(base + TIMER_CNTVAL_LO_REG(1),
node->name,
rate, 340, UINT_MAX,
clocksource_mmio_readl_down);
Replaced UINT_MAX by '32'.
-- Daniel
--
<http://www.linaro.org/> Linaro.org ? Open source software for ARM SoCs
Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-11-13 14:27 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-11-12 18:40 [PATCH V2] clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init Daniel Lezcano
2015-11-12 18:40 ` Daniel Lezcano
2015-11-12 23:31 ` Maxime Ripard
2015-11-12 23:31 ` Maxime Ripard
2015-11-13 14:27 ` Daniel Lezcano
2015-11-13 14:27 ` Daniel Lezcano
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