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rtc: rtc-s3c: Updates RTC driver for clock enabling support

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This Patch updates existing Samsung RTC driver for clock enabling support.

Signed-off-by: Atul Dahiya <atul.dahiya@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
This commit is contained in:
Atul Dahiya 2010-07-20 12:19:14 +05:30 committed by Kukjin Kim
parent 32fc7fb3b9
commit e48add8c1c
1 changed files with 22 additions and 0 deletions
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22
drivers/rtc/rtc-s3c.c
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@ -1,4 +1,7 @@
/* drivers/rtc/rtc-s3c.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright (c) 2004,2006 Simtec Electronics
* Ben Dooks, <ben@simtec.co.uk>
@ -39,6 +42,7 @@ enum s3c_cpu_type {
static struct resource *s3c_rtc_mem;
static struct clk *rtc_clk;
static void __iomem *s3c_rtc_base;
static int s3c_rtc_alarmno = NO_IRQ;
static int s3c_rtc_tickno = NO_IRQ;
@ -431,6 +435,10 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev)
s3c_rtc_setpie(&dev->dev, 0);
s3c_rtc_setaie(0);
clk_disable(rtc_clk);
clk_put(rtc_clk);
rtc_clk = NULL;
iounmap(s3c_rtc_base);
release_resource(s3c_rtc_mem);
kfree(s3c_rtc_mem);
@ -488,6 +496,16 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
goto err_nomap;
}
rtc_clk = clk_get(&pdev->dev, "rtc");
if (IS_ERR(rtc_clk)) {
dev_err(&pdev->dev, "failed to find rtc clock source\n");
ret = PTR_ERR(rtc_clk);
rtc_clk = NULL;
goto err_clk;
}
clk_enable(rtc_clk);
/* check to see if everything is setup correctly */
s3c_rtc_enable(pdev, 1);
@ -523,6 +541,10 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
err_nortc:
s3c_rtc_enable(pdev, 0);
clk_disable(rtc_clk);
clk_put(rtc_clk);
err_clk:
iounmap(s3c_rtc_base);
err_nomap: