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Commit 8e8bbcb3 authored by Haojian Zhuang's avatar Haojian Zhuang
Browse files

rtc: sa1100: enable clk support 



Enable clock support on rtc-sa1100.

Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
parent 3e12ec77

drivers/rtc/rtc-sa1100.c

+17 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 


#include <linux/platform_device.h>

#include <linux/module.h>

#include <linux/clk.h>

#include <linux/rtc.h>

#include <linux/init.h>

#include <linux/fs.h>
@@ -48,6 +49,7 @@ struct sa1100_rtc { 
	int			irq_1hz;

	int			irq_alarm;

	struct rtc_device	*rtc;

	struct clk		*clk;

};



static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
@@ -104,6 +106,9 @@ static int sa1100_rtc_open(struct device *dev) 
	struct rtc_device *rtc = info->rtc;

	int ret;



	ret = clk_prepare_enable(info->clk);

	if (ret)

		goto fail_clk;

	ret = request_irq(info->irq_1hz, sa1100_rtc_interrupt, IRQF_DISABLED,

		"rtc 1Hz", dev);

	if (ret) {
@@ -124,6 +129,8 @@ static int sa1100_rtc_open(struct device *dev) 
 fail_ai:

	free_irq(info->irq_1hz, dev);

 fail_ui:

	clk_disable_unprepare(info->clk);

 fail_clk:

	return ret;

}
@@ -137,6 +144,7 @@ static void sa1100_rtc_release(struct device *dev) 


	free_irq(info->irq_alarm, dev);

	free_irq(info->irq_1hz, dev);

	clk_disable_unprepare(info->clk);

}



static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
@@ -234,6 +242,12 @@ static int sa1100_rtc_probe(struct platform_device *pdev) 
	info = kzalloc(sizeof(struct sa1100_rtc), GFP_KERNEL);

	if (!info)

		return -ENOMEM;

	info->clk = clk_get(&pdev->dev, NULL);

	if (IS_ERR(info->clk)) {

		dev_err(&pdev->dev, "failed to find rtc clock source\n");

		ret = PTR_ERR(info->clk);

		goto err_clk;

	}

	info->irq_1hz = irq_1hz;

	info->irq_alarm = irq_alarm;

	spin_lock_init(&info->lock);
@@ -292,6 +306,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev) 
	return 0;

err_dev:

	platform_set_drvdata(pdev, NULL);

	clk_put(info->clk);

err_clk:

	kfree(info);

	return ret;

}
@@ -302,6 +318,7 @@ static int sa1100_rtc_remove(struct platform_device *pdev) 


	if (info) {

		rtc_device_unregister(info->rtc);

		clk_put(info->clk);

		platform_set_drvdata(pdev, NULL);

		kfree(info);

	}