diff mbox

clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init

Message ID 1447348278-16277-1-git-send-email-daniel.lezcano@linaro.org
State Superseded
Headers show

Commit Message

Daniel Lezcano Nov. 12, 2015, 5:11 p.m. UTC
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(-)

-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Comments

Daniel Lezcano Nov. 12, 2015, 6:36 p.m. UTC | #1
On 11/12/2015 07:08 PM, Maxime Ripard wrote:
> Hi Daniel,

>

> On Thu, Nov 12, 2015 at 06:11:18PM +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>

>> ---

>>   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..dc3793c 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_readw_down);

>

> Shouldn't it be clocksource_mmio_readl_down?


Ah yes. Thanks for catching this. I will fix it.

   -- 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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
diff mbox

Patch

diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c
index bca9573..dc3793c 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_readw_down);
 	if (ret) {
 		pr_err("Couldn't register clock source.\n");
 		goto err_remove_notifier;