Commit 8c0961ba authored by Rob Herring's avatar Rob Herring Committed by Alexandre Belloni
Browse files

rtc: sa1100: prepare to share sa1100_rtc_ops 



Factor out the RTC initialization from the platform device specific
parts in order to share the RTC device ops with other drivers.
Specifically, it will be shared with rtc-pxa driver.

Signed-off-by: default avatarRob Herring <robh@kernel.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: rtc-linux@googlegroups.com
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent dc2280eb

drivers/rtc/rtc-sa1100.c

+30 −29
Original line number Original line Diff line number Diff line
@@ -42,17 +42,12 @@ 
#include <mach/regs-rtc.h>

#include <mach/regs-rtc.h>

#endif

#endif





#include "rtc-sa1100.h"



#define RTC_DEF_DIVIDER		(32768 - 1)

#define RTC_DEF_DIVIDER		(32768 - 1)

#define RTC_DEF_TRIM		0

#define RTC_DEF_TRIM		0

#define RTC_FREQ		1024

#define RTC_FREQ		1024





struct sa1100_rtc {

	spinlock_t		lock;

	int			irq_1hz;

	int			irq_alarm;

	struct rtc_device	*rtc;

	struct clk		*clk;

};





static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)

static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)

{

{
@@ -223,29 +218,18 @@ static const struct rtc_class_ops sa1100_rtc_ops = { 
	.alarm_irq_enable = sa1100_rtc_alarm_irq_enable,

	.alarm_irq_enable = sa1100_rtc_alarm_irq_enable,

};

};





static int sa1100_rtc_probe(struct platform_device *pdev)

int sa1100_rtc_init(struct platform_device *pdev, struct sa1100_rtc *info)

{

{

	struct rtc_device *rtc;

	struct rtc_device *rtc;

	struct sa1100_rtc *info;

	int ret;

	int irq_1hz, irq_alarm, ret = 0;





	irq_1hz = platform_get_irq_byname(pdev, "rtc 1Hz");

	spin_lock_init(&info->lock);

	irq_alarm = platform_get_irq_byname(pdev, "rtc alarm");

	if (irq_1hz < 0 || irq_alarm < 0)

		return -ENODEV;





	info = devm_kzalloc(&pdev->dev, sizeof(struct sa1100_rtc), GFP_KERNEL);

	if (!info)

		return -ENOMEM;

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

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

	if (IS_ERR(info->clk)) {

	if (IS_ERR(info->clk)) {

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

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

		return PTR_ERR(info->clk);

		return PTR_ERR(info->clk);

	}

	}

	info->irq_1hz = irq_1hz;

	info->irq_alarm = irq_alarm;

	spin_lock_init(&info->lock);

	platform_set_drvdata(pdev, info);





	ret = clk_prepare_enable(info->clk);

	ret = clk_prepare_enable(info->clk);

	if (ret)

	if (ret)
@@ -265,14 +249,11 @@ static int sa1100_rtc_probe(struct platform_device *pdev) 
		RCNR = 0;

		RCNR = 0;

	}

	}





	device_init_wakeup(&pdev->dev, 1);



	rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &sa1100_rtc_ops,

	rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &sa1100_rtc_ops,

					THIS_MODULE);

					THIS_MODULE);



	if (IS_ERR(rtc)) {

	if (IS_ERR(rtc)) {

		ret = PTR_ERR(rtc);

		clk_disable_unprepare(info->clk);

		goto err_dev;

		return PTR_ERR(rtc);

	}

	}

	info->rtc = rtc;

	info->rtc = rtc;
@@ -301,9 +282,29 @@ static int sa1100_rtc_probe(struct platform_device *pdev) 
	RTSR = RTSR_AL | RTSR_HZ;

	RTSR = RTSR_AL | RTSR_HZ;





	return 0;

	return 0;

err_dev:

}

	clk_disable_unprepare(info->clk);

EXPORT_SYMBOL_GPL(sa1100_rtc_init);

	return ret;



static int sa1100_rtc_probe(struct platform_device *pdev)

{

	struct sa1100_rtc *info;

	int irq_1hz, irq_alarm;



	irq_1hz = platform_get_irq_byname(pdev, "rtc 1Hz");

	irq_alarm = platform_get_irq_byname(pdev, "rtc alarm");

	if (irq_1hz < 0 || irq_alarm < 0)

		return -ENODEV;



	info = devm_kzalloc(&pdev->dev, sizeof(struct sa1100_rtc), GFP_KERNEL);

	if (!info)

		return -ENOMEM;

	info->irq_1hz = irq_1hz;

	info->irq_alarm = irq_alarm;



	platform_set_drvdata(pdev, info);

	device_init_wakeup(&pdev->dev, 1);



	return sa1100_rtc_init(pdev, info);

}

}





static int sa1100_rtc_remove(struct platform_device *pdev)

static int sa1100_rtc_remove(struct platform_device *pdev)

drivers/rtc/rtc-sa1100.h

0 → 100644
+19 −0
Original line number Original line Diff line number Diff line 
#ifndef __RTC_SA1100_H__

#define __RTC_SA1100_H__



#include <linux/kernel.h>



struct clk;

struct platform_device;



struct sa1100_rtc {

	spinlock_t		lock;

	int			irq_1hz;

	int			irq_alarm;

	struct rtc_device	*rtc;

	struct clk		*clk;

};



int sa1100_rtc_init(struct platform_device *pdev, struct sa1100_rtc *info);



#endif