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ARM: SAMSUNG: Add clk enable/disable of pwm

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PWM timers use pclk("timers" clk) as parent clk. If this pclk is the
disabled state when PWM driver is probed, then it causes wrong read and
write operation about registers of PWM.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Joonyoung Shim 2011-11-04 10:39:34 +09:00 committed by Kukjin Kim
parent 8088041ee3
commit d8633c1da1
1 changed files with 7 additions and 0 deletions
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7
arch/arm/plat-samsung/pwm.c
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@ -299,6 +299,9 @@ static int s3c_pwm_probe(struct platform_device *pdev)
goto err_clk_tin;
}
clk_enable(pwm->clk);
clk_enable(pwm->clk_div);
local_irq_save(flags);
tcon = __raw_readl(S3C2410_TCON);
@ -326,6 +329,8 @@ static int s3c_pwm_probe(struct platform_device *pdev)
return 0;
err_clk_tdiv:
clk_disable(pwm->clk_div);
clk_disable(pwm->clk);
clk_put(pwm->clk_div);
err_clk_tin:
@ -340,6 +345,8 @@ static int __devexit s3c_pwm_remove(struct platform_device *pdev)
{
struct pwm_device *pwm = platform_get_drvdata(pdev);
clk_disable(pwm->clk_div);
clk_disable(pwm->clk);
clk_put(pwm->clk_div);
clk_put(pwm->clk);
kfree(pwm);