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Commit d8633c1d authored by Joonyoung Shim's avatar Joonyoung Shim Committed by Kukjin Kim
Browse files

ARM: SAMSUNG: Add clk enable/disable of pwm 



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: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 8088041e

arch/arm/plat-samsung/pwm.c

+7 −0
Original line number Diff line number Diff line
@@ -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);