Commit 19be09f5 authored by Chanwoo Choi's avatar Chanwoo Choi Committed by Linus Torvalds
Browse files

rtc: s3c: define s3c_rtc structure to remove global variables. 



Define s3c_rtc structure including necessary variables for S3C RTC device
instead of global variables.  This patch improves the readability by
removing global variables.

Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 473b8645

drivers/rtc/rtc-s3c.c

+216 −215
Original line number Diff line number Diff line
@@ -43,125 +43,132 @@ struct s3c_rtc_drv_data { 
	int cpu_type;

};



/* I have yet to find an S3C implementation with more than one

 * of these rtc blocks in */

struct s3c_rtc {

	struct device *dev;

	struct rtc_device *rtc;



	void __iomem *base;

	struct clk *rtc_clk;

	bool enabled;



	enum s3c_cpu_type cpu_type;



static struct clk *rtc_clk;

static void __iomem *s3c_rtc_base;

static int s3c_rtc_alarmno;

static int s3c_rtc_tickno;

static enum s3c_cpu_type s3c_rtc_cpu_type;

	int irq_alarm;

	int irq_tick;



static DEFINE_SPINLOCK(s3c_rtc_pie_lock);

	spinlock_t pie_lock;

	spinlock_t alarm_clk_lock;



static void s3c_rtc_alarm_clk_enable(bool enable)

	int ticnt_save, ticnt_en_save;

	bool wake_en;

};



static void s3c_rtc_alarm_clk_enable(struct s3c_rtc *info, bool enable)

{

	static DEFINE_SPINLOCK(s3c_rtc_alarm_clk_lock);

	static bool alarm_clk_enabled;

	unsigned long irq_flags;



	spin_lock_irqsave(&s3c_rtc_alarm_clk_lock, irq_flags);

	spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);

	if (enable) {

		if (!alarm_clk_enabled) {

			clk_enable(rtc_clk);

			alarm_clk_enabled = true;

		if (!info->enabled) {

			clk_enable(info->rtc_clk);

			info->enabled = true;

		}

	} else {

		if (alarm_clk_enabled) {

			clk_disable(rtc_clk);

			alarm_clk_enabled = false;

		if (info->enabled) {

			clk_disable(info->rtc_clk);

			info->enabled = false;

		}

	}

	spin_unlock_irqrestore(&s3c_rtc_alarm_clk_lock, irq_flags);

	spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);

}



/* IRQ Handlers */



static irqreturn_t s3c_rtc_alarmirq(int irq, void *id)

{

	struct rtc_device *rdev = id;

	struct s3c_rtc *info = (struct s3c_rtc *)id;



	clk_enable(rtc_clk);

	rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);

	clk_enable(info->rtc_clk);

	rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);



	if (s3c_rtc_cpu_type == TYPE_S3C64XX)

		writeb(S3C2410_INTP_ALM, s3c_rtc_base + S3C2410_INTP);

	if (info->cpu_type == TYPE_S3C64XX)

		writeb(S3C2410_INTP_ALM, info->base + S3C2410_INTP);



	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);



	s3c_rtc_alarm_clk_enable(false);

	s3c_rtc_alarm_clk_enable(info, false);



	return IRQ_HANDLED;

}



static irqreturn_t s3c_rtc_tickirq(int irq, void *id)

{

	struct rtc_device *rdev = id;

	struct s3c_rtc *info = (struct s3c_rtc *)id;



	clk_enable(rtc_clk);

	rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF);

	clk_enable(info->rtc_clk);

	rtc_update_irq(info->rtc, 1, RTC_PF | RTC_IRQF);



	if (s3c_rtc_cpu_type == TYPE_S3C64XX)

		writeb(S3C2410_INTP_TIC, s3c_rtc_base + S3C2410_INTP);

	if (info->cpu_type == TYPE_S3C64XX)

		writeb(S3C2410_INTP_TIC, info->base + S3C2410_INTP);



	clk_disable(info->rtc_clk);



	clk_disable(rtc_clk);

	return IRQ_HANDLED;

}



/* Update control registers */

static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)

{

	struct s3c_rtc *info = dev_get_drvdata(dev);

	unsigned int tmp;



	dev_dbg(dev, "%s: aie=%d\n", __func__, enabled);

	dev_dbg(info->dev, "%s: aie=%d\n", __func__, enabled);



	clk_enable(rtc_clk);

	tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;

	clk_enable(info->rtc_clk);

	tmp = readb(info->base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;



	if (enabled)

		tmp |= S3C2410_RTCALM_ALMEN;



	writeb(tmp, s3c_rtc_base + S3C2410_RTCALM);

	clk_disable(rtc_clk);

	writeb(tmp, info->base + S3C2410_RTCALM);

	clk_disable(info->rtc_clk);



	s3c_rtc_alarm_clk_enable(enabled);

	s3c_rtc_alarm_clk_enable(info, enabled);



	return 0;

}



static int s3c_rtc_setfreq(struct device *dev, int freq)

static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct rtc_device *rtc_dev = platform_get_drvdata(pdev);

	unsigned int tmp = 0;

	int val;



	if (!is_power_of_2(freq))

		return -EINVAL;



	clk_enable(rtc_clk);

	spin_lock_irq(&s3c_rtc_pie_lock);

	clk_enable(info->rtc_clk);

	spin_lock_irq(&info->pie_lock);



	if (s3c_rtc_cpu_type != TYPE_S3C64XX) {

		tmp = readb(s3c_rtc_base + S3C2410_TICNT);

	if (info->cpu_type != TYPE_S3C64XX) {

		tmp = readb(info->base + S3C2410_TICNT);

		tmp &= S3C2410_TICNT_ENABLE;

	}



	val = (rtc_dev->max_user_freq / freq) - 1;

	val = (info->rtc->max_user_freq / freq) - 1;



	if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {

	if (info->cpu_type == TYPE_S3C2416 || info->cpu_type == TYPE_S3C2443) {

		tmp |= S3C2443_TICNT_PART(val);

		writel(S3C2443_TICNT1_PART(val), s3c_rtc_base + S3C2443_TICNT1);

		writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1);



		if (s3c_rtc_cpu_type == TYPE_S3C2416)

			writel(S3C2416_TICNT2_PART(val), s3c_rtc_base + S3C2416_TICNT2);

		if (info->cpu_type == TYPE_S3C2416)

			writel(S3C2416_TICNT2_PART(val),

				info->base + S3C2416_TICNT2);

	} else {

		tmp |= val;

	}



	writel(tmp, s3c_rtc_base + S3C2410_TICNT);

	spin_unlock_irq(&s3c_rtc_pie_lock);

	clk_disable(rtc_clk);

	writel(tmp, info->base + S3C2410_TICNT);

	spin_unlock_irq(&info->pie_lock);

	clk_disable(info->rtc_clk);



	return 0;

}
@@ -170,17 +177,17 @@ static int s3c_rtc_setfreq(struct device *dev, int freq) 


static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)

{

	struct s3c_rtc *info = dev_get_drvdata(dev);

	unsigned int have_retried = 0;

	void __iomem *base = s3c_rtc_base;



	clk_enable(rtc_clk);

	clk_enable(info->rtc_clk);

 retry_get_time:

	rtc_tm->tm_min  = readb(base + S3C2410_RTCMIN);

	rtc_tm->tm_hour = readb(base + S3C2410_RTCHOUR);

	rtc_tm->tm_mday = readb(base + S3C2410_RTCDATE);

	rtc_tm->tm_mon  = readb(base + S3C2410_RTCMON);

	rtc_tm->tm_year = readb(base + S3C2410_RTCYEAR);

	rtc_tm->tm_sec  = readb(base + S3C2410_RTCSEC);

	rtc_tm->tm_min  = readb(info->base + S3C2410_RTCMIN);

	rtc_tm->tm_hour = readb(info->base + S3C2410_RTCHOUR);

	rtc_tm->tm_mday = readb(info->base + S3C2410_RTCDATE);

	rtc_tm->tm_mon  = readb(info->base + S3C2410_RTCMON);

	rtc_tm->tm_year = readb(info->base + S3C2410_RTCYEAR);

	rtc_tm->tm_sec  = readb(info->base + S3C2410_RTCSEC);



	/* the only way to work out whether the system was mid-update

	 * when we read it is to check the second counter, and if it
@@ -207,13 +214,14 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm) 


	rtc_tm->tm_mon -= 1;



	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);



	return rtc_valid_tm(rtc_tm);

}



static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)

{

	void __iomem *base = s3c_rtc_base;

	struct s3c_rtc *info = dev_get_drvdata(dev);

	int year = tm->tm_year - 100;



	dev_dbg(dev, "set time %04d.%02d.%02d %02d:%02d:%02d\n",
@@ -227,33 +235,35 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm) 
		return -EINVAL;

	}



	clk_enable(rtc_clk);

	writeb(bin2bcd(tm->tm_sec),  base + S3C2410_RTCSEC);

	writeb(bin2bcd(tm->tm_min),  base + S3C2410_RTCMIN);

	writeb(bin2bcd(tm->tm_hour), base + S3C2410_RTCHOUR);

	writeb(bin2bcd(tm->tm_mday), base + S3C2410_RTCDATE);

	writeb(bin2bcd(tm->tm_mon + 1), base + S3C2410_RTCMON);

	writeb(bin2bcd(year), base + S3C2410_RTCYEAR);

	clk_disable(rtc_clk);

	clk_enable(info->rtc_clk);



	writeb(bin2bcd(tm->tm_sec),  info->base + S3C2410_RTCSEC);

	writeb(bin2bcd(tm->tm_min),  info->base + S3C2410_RTCMIN);

	writeb(bin2bcd(tm->tm_hour), info->base + S3C2410_RTCHOUR);

	writeb(bin2bcd(tm->tm_mday), info->base + S3C2410_RTCDATE);

	writeb(bin2bcd(tm->tm_mon + 1), info->base + S3C2410_RTCMON);

	writeb(bin2bcd(year), info->base + S3C2410_RTCYEAR);



	clk_disable(info->rtc_clk);



	return 0;

}



static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)

{

	struct s3c_rtc *info = dev_get_drvdata(dev);

	struct rtc_time *alm_tm = &alrm->time;

	void __iomem *base = s3c_rtc_base;

	unsigned int alm_en;



	clk_enable(rtc_clk);

	alm_tm->tm_sec  = readb(base + S3C2410_ALMSEC);

	alm_tm->tm_min  = readb(base + S3C2410_ALMMIN);

	alm_tm->tm_hour = readb(base + S3C2410_ALMHOUR);

	alm_tm->tm_mon  = readb(base + S3C2410_ALMMON);

	alm_tm->tm_mday = readb(base + S3C2410_ALMDATE);

	alm_tm->tm_year = readb(base + S3C2410_ALMYEAR);

	clk_enable(info->rtc_clk);

	alm_tm->tm_sec  = readb(info->base + S3C2410_ALMSEC);

	alm_tm->tm_min  = readb(info->base + S3C2410_ALMMIN);

	alm_tm->tm_hour = readb(info->base + S3C2410_ALMHOUR);

	alm_tm->tm_mon  = readb(info->base + S3C2410_ALMMON);

	alm_tm->tm_mday = readb(info->base + S3C2410_ALMDATE);

	alm_tm->tm_year = readb(info->base + S3C2410_ALMYEAR);



	alm_en = readb(base + S3C2410_RTCALM);

	alm_en = readb(info->base + S3C2410_RTCALM);



	alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
@@ -297,65 +307,67 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm) 
	else

		alm_tm->tm_year = -1;



	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);

	return 0;

}



static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)

{

	struct s3c_rtc *info = dev_get_drvdata(dev);

	struct rtc_time *tm = &alrm->time;

	void __iomem *base = s3c_rtc_base;

	unsigned int alrm_en;



	clk_enable(rtc_clk);

	clk_enable(info->rtc_clk);

	dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",

		 alrm->enabled,

		 1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,

		 tm->tm_hour, tm->tm_min, tm->tm_sec);



	alrm_en = readb(base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;

	writeb(0x00, base + S3C2410_RTCALM);

	alrm_en = readb(info->base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;

	writeb(0x00, info->base + S3C2410_RTCALM);



	if (tm->tm_sec < 60 && tm->tm_sec >= 0) {

		alrm_en |= S3C2410_RTCALM_SECEN;

		writeb(bin2bcd(tm->tm_sec), base + S3C2410_ALMSEC);

		writeb(bin2bcd(tm->tm_sec), info->base + S3C2410_ALMSEC);

	}



	if (tm->tm_min < 60 && tm->tm_min >= 0) {

		alrm_en |= S3C2410_RTCALM_MINEN;

		writeb(bin2bcd(tm->tm_min), base + S3C2410_ALMMIN);

		writeb(bin2bcd(tm->tm_min), info->base + S3C2410_ALMMIN);

	}



	if (tm->tm_hour < 24 && tm->tm_hour >= 0) {

		alrm_en |= S3C2410_RTCALM_HOUREN;

		writeb(bin2bcd(tm->tm_hour), base + S3C2410_ALMHOUR);

		writeb(bin2bcd(tm->tm_hour), info->base + S3C2410_ALMHOUR);

	}



	dev_dbg(dev, "setting S3C2410_RTCALM to %08x\n", alrm_en);



	writeb(alrm_en, base + S3C2410_RTCALM);

	writeb(alrm_en, info->base + S3C2410_RTCALM);



	s3c_rtc_setaie(dev, alrm->enabled);



	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);



	return 0;

}



static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)

{

	struct s3c_rtc *info = dev_get_drvdata(dev);

	unsigned int ticnt;



	clk_enable(rtc_clk);

	if (s3c_rtc_cpu_type == TYPE_S3C64XX) {

		ticnt = readw(s3c_rtc_base + S3C2410_RTCCON);

	clk_enable(info->rtc_clk);

	if (info->cpu_type == TYPE_S3C64XX) {

		ticnt = readw(info->base + S3C2410_RTCCON);

		ticnt &= S3C64XX_RTCCON_TICEN;

	} else {

		ticnt = readb(s3c_rtc_base + S3C2410_TICNT);

		ticnt = readb(info->base + S3C2410_TICNT);

		ticnt &= S3C2410_TICNT_ENABLE;

	}



	seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt  ? "yes" : "no");

	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);

	return 0;

}
@@ -368,63 +380,61 @@ static const struct rtc_class_ops s3c_rtcops = { 
	.alarm_irq_enable = s3c_rtc_setaie,

};



static void s3c_rtc_enable(struct platform_device *pdev, int en)

static void s3c_rtc_enable(struct s3c_rtc *info, int en)

{

	void __iomem *base = s3c_rtc_base;

	unsigned int tmp;



	if (s3c_rtc_base == NULL)

		return;



	clk_enable(rtc_clk);

	clk_enable(info->rtc_clk);

	if (!en) {

		tmp = readw(base + S3C2410_RTCCON);

		if (s3c_rtc_cpu_type == TYPE_S3C64XX)

		tmp = readw(info->base + S3C2410_RTCCON);

		if (info->cpu_type == TYPE_S3C64XX)

			tmp &= ~S3C64XX_RTCCON_TICEN;

		tmp &= ~S3C2410_RTCCON_RTCEN;

		writew(tmp, base + S3C2410_RTCCON);

		writew(tmp, info->base + S3C2410_RTCCON);



		if (s3c_rtc_cpu_type != TYPE_S3C64XX) {

			tmp = readb(base + S3C2410_TICNT);

		if (info->cpu_type != TYPE_S3C64XX) {

			tmp = readb(info->base + S3C2410_TICNT);

			tmp &= ~S3C2410_TICNT_ENABLE;

			writeb(tmp, base + S3C2410_TICNT);

			writeb(tmp, info->base + S3C2410_TICNT);

		}

	} else {

		/* re-enable the device, and check it is ok */



		if ((readw(base+S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0) {

			dev_info(&pdev->dev, "rtc disabled, re-enabling\n");

		if ((readw(info->base + S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0) {

			dev_info(info->dev, "rtc disabled, re-enabling\n");



			tmp = readw(base + S3C2410_RTCCON);

			tmp = readw(info->base + S3C2410_RTCCON);

			writew(tmp | S3C2410_RTCCON_RTCEN,

				base + S3C2410_RTCCON);

				info->base + S3C2410_RTCCON);

		}



		if ((readw(base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)) {

			dev_info(&pdev->dev, "removing RTCCON_CNTSEL\n");

		if ((readw(info->base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)) {

			dev_info(info->dev, "removing RTCCON_CNTSEL\n");



			tmp = readw(base + S3C2410_RTCCON);

			tmp = readw(info->base + S3C2410_RTCCON);

			writew(tmp & ~S3C2410_RTCCON_CNTSEL,

				base + S3C2410_RTCCON);

				info->base + S3C2410_RTCCON);

		}



		if ((readw(base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)) {

			dev_info(&pdev->dev, "removing RTCCON_CLKRST\n");

		if ((readw(info->base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)) {

			dev_info(info->dev, "removing RTCCON_CLKRST\n");



			tmp = readw(base + S3C2410_RTCCON);

			tmp = readw(info->base + S3C2410_RTCCON);

			writew(tmp & ~S3C2410_RTCCON_CLKRST,

				base + S3C2410_RTCCON);

				info->base + S3C2410_RTCCON);

		}

	}

	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);

}



static int s3c_rtc_remove(struct platform_device *dev)

static int s3c_rtc_remove(struct platform_device *pdev)

{

	s3c_rtc_setaie(&dev->dev, 0);

	struct s3c_rtc *info = platform_get_drvdata(pdev);



	s3c_rtc_setaie(info->dev, 0);



	clk_unprepare(rtc_clk);

	rtc_clk = NULL;

	clk_unprepare(info->rtc_clk);

	info->rtc_clk = NULL;



	return 0;

}
@@ -447,73 +457,85 @@ static inline int s3c_rtc_get_driver_data(struct platform_device *pdev) 


static int s3c_rtc_probe(struct platform_device *pdev)

{

	struct rtc_device *rtc;

	struct s3c_rtc *info = NULL;

	struct rtc_time rtc_tm;

	struct resource *res;

	int ret;

	int tmp;



	dev_dbg(&pdev->dev, "%s: probe=%p\n", __func__, pdev);

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

	if (!info)

		return -ENOMEM;



	/* find the IRQs */



	s3c_rtc_tickno = platform_get_irq(pdev, 1);

	if (s3c_rtc_tickno < 0) {

	info->irq_tick = platform_get_irq(pdev, 1);

	if (info->irq_tick < 0) {

		dev_err(&pdev->dev, "no irq for rtc tick\n");

		return s3c_rtc_tickno;

		return info->irq_tick;

	}



	s3c_rtc_alarmno = platform_get_irq(pdev, 0);

	if (s3c_rtc_alarmno < 0) {

	info->dev = &pdev->dev;

	info->cpu_type = s3c_rtc_get_driver_data(pdev);

	spin_lock_init(&info->pie_lock);

	spin_lock_init(&info->alarm_clk_lock);



	platform_set_drvdata(pdev, info);



	info->irq_alarm = platform_get_irq(pdev, 0);

	if (info->irq_alarm < 0) {

		dev_err(&pdev->dev, "no irq for alarm\n");

		return s3c_rtc_alarmno;

		return info->irq_alarm;

	}



	dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n",

		 s3c_rtc_tickno, s3c_rtc_alarmno);

		 info->irq_tick, info->irq_alarm);



	/* get the memory region */



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	s3c_rtc_base = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(s3c_rtc_base))

		return PTR_ERR(s3c_rtc_base);

	info->base = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(info->base))

		return PTR_ERR(info->base);



	rtc_clk = devm_clk_get(&pdev->dev, "rtc");

	if (IS_ERR(rtc_clk)) {

	info->rtc_clk = devm_clk_get(&pdev->dev, "rtc");

	if (IS_ERR(info->rtc_clk)) {

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

		ret = PTR_ERR(rtc_clk);

		rtc_clk = NULL;

		return ret;

		return PTR_ERR(info->rtc_clk);

	}



	clk_prepare_enable(rtc_clk);

	clk_prepare_enable(info->rtc_clk);



	/* check to see if everything is setup correctly */



	s3c_rtc_enable(pdev, 1);

	s3c_rtc_enable(info, 1);



	dev_dbg(&pdev->dev, "s3c2410_rtc: RTCCON=%02x\n",

		 readw(s3c_rtc_base + S3C2410_RTCCON));

		 readw(info->base + S3C2410_RTCCON));



	device_init_wakeup(&pdev->dev, 1);



	/* register RTC and exit */



	rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,

	info->rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,

				  THIS_MODULE);



	if (IS_ERR(rtc)) {

	if (IS_ERR(info->rtc)) {

		dev_err(&pdev->dev, "cannot attach rtc\n");

		ret = PTR_ERR(rtc);

		ret = PTR_ERR(info->rtc);

		goto err_nortc;

	}



	s3c_rtc_cpu_type = s3c_rtc_get_driver_data(pdev);

	ret = devm_request_irq(&pdev->dev, info->irq_alarm, s3c_rtc_alarmirq,

			  0,  "s3c2410-rtc alarm", info);

	if (ret) {

		dev_err(&pdev->dev, "IRQ%d error %d\n", info->irq_alarm, ret);

		goto err_nortc;

	}



	/* Check RTC Time */

	ret = devm_request_irq(&pdev->dev, info->irq_tick, s3c_rtc_tickirq,

			  0,  "s3c2410-rtc tick", info);

	if (ret) {

		dev_err(&pdev->dev, "IRQ%d error %d\n", info->irq_tick, ret);

		goto err_nortc;

	}



	s3c_rtc_gettime(NULL, &rtc_tm);

	/* Check RTC Time */

	s3c_rtc_gettime(&pdev->dev, &rtc_tm);



	if (rtc_valid_tm(&rtc_tm)) {

		rtc_tm.tm_year	= 100;
@@ -523,111 +545,90 @@ static int s3c_rtc_probe(struct platform_device *pdev) 
		rtc_tm.tm_min	= 0;

		rtc_tm.tm_sec	= 0;



		s3c_rtc_settime(NULL, &rtc_tm);

		s3c_rtc_settime(&pdev->dev, &rtc_tm);



		dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");

	}



	if (s3c_rtc_cpu_type != TYPE_S3C2410)

		rtc->max_user_freq = 32768;

	if (info->cpu_type != TYPE_S3C2410)

		info->rtc->max_user_freq = 32768;

	else

		rtc->max_user_freq = 128;

		info->rtc->max_user_freq = 128;



	if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {

		tmp = readw(s3c_rtc_base + S3C2410_RTCCON);

	if (info->cpu_type == TYPE_S3C2416 || info->cpu_type == TYPE_S3C2443) {

		tmp = readw(info->base + S3C2410_RTCCON);

		tmp |= S3C2443_RTCCON_TICSEL;

		writew(tmp, s3c_rtc_base + S3C2410_RTCCON);

		writew(tmp, info->base + S3C2410_RTCCON);

	}



	platform_set_drvdata(pdev, rtc);

	s3c_rtc_setfreq(info, 1);



	s3c_rtc_setfreq(&pdev->dev, 1);



	ret = devm_request_irq(&pdev->dev, s3c_rtc_alarmno, s3c_rtc_alarmirq,

			  0,  "s3c2410-rtc alarm", rtc);

	if (ret) {

		dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret);

		goto err_nortc;

	}



	ret = devm_request_irq(&pdev->dev, s3c_rtc_tickno, s3c_rtc_tickirq,

			  0,  "s3c2410-rtc tick", rtc);

	if (ret) {

		dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret);

		goto err_nortc;

	}



	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);



	return 0;



 err_nortc:

	s3c_rtc_enable(pdev, 0);

	clk_disable_unprepare(rtc_clk);

	s3c_rtc_enable(info, 0);

	clk_disable_unprepare(info->rtc_clk);



	return ret;

}



#ifdef CONFIG_PM_SLEEP

/* RTC Power management control */



static int ticnt_save, ticnt_en_save;

static bool wake_en;



static int s3c_rtc_suspend(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct s3c_rtc *info = dev_get_drvdata(dev);



	clk_enable(rtc_clk);

	clk_enable(info->rtc_clk);

	/* save TICNT for anyone using periodic interrupts */

	if (s3c_rtc_cpu_type == TYPE_S3C64XX) {

		ticnt_en_save = readw(s3c_rtc_base + S3C2410_RTCCON);

		ticnt_en_save &= S3C64XX_RTCCON_TICEN;

		ticnt_save = readl(s3c_rtc_base + S3C2410_TICNT);

	if (info->cpu_type == TYPE_S3C64XX) {

		info->ticnt_en_save = readw(info->base + S3C2410_RTCCON);

		info->ticnt_en_save &= S3C64XX_RTCCON_TICEN;

		info->ticnt_save = readl(info->base + S3C2410_TICNT);

	} else {

		ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);

		info->ticnt_save = readb(info->base + S3C2410_TICNT);

	}

	s3c_rtc_enable(pdev, 0);

	s3c_rtc_enable(info, 0);



	if (device_may_wakeup(dev) && !wake_en) {

		if (enable_irq_wake(s3c_rtc_alarmno) == 0)

			wake_en = true;

	if (device_may_wakeup(dev) && !info->wake_en) {

		if (enable_irq_wake(info->irq_alarm) == 0)

			info->wake_en = true;

		else

			dev_err(dev, "enable_irq_wake failed\n");

	}

	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);



	return 0;

}



static int s3c_rtc_resume(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct s3c_rtc *info = dev_get_drvdata(dev);

	unsigned int tmp;



	clk_enable(rtc_clk);

	s3c_rtc_enable(pdev, 1);

	if (s3c_rtc_cpu_type == TYPE_S3C64XX) {

		writel(ticnt_save, s3c_rtc_base + S3C2410_TICNT);

		if (ticnt_en_save) {

			tmp = readw(s3c_rtc_base + S3C2410_RTCCON);

			writew(tmp | ticnt_en_save,

					s3c_rtc_base + S3C2410_RTCCON);

	clk_enable(info->rtc_clk);

	s3c_rtc_enable(info, 1);

	if (info->cpu_type == TYPE_S3C64XX) {

		writel(info->ticnt_save, info->base + S3C2410_TICNT);

		if (info->ticnt_en_save) {

			tmp = readw(info->base + S3C2410_RTCCON);

			writew(tmp | info->ticnt_en_save,

					info->base + S3C2410_RTCCON);

		}

	} else {

		writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);

		writeb(info->ticnt_save, info->base + S3C2410_TICNT);

	}



	if (device_may_wakeup(dev) && wake_en) {

		disable_irq_wake(s3c_rtc_alarmno);

		wake_en = false;

	if (device_may_wakeup(dev) && info->wake_en) {

		disable_irq_wake(info->irq_alarm);

		info->wake_en = false;

	}

	clk_disable(rtc_clk);

	clk_disable(info->rtc_clk);



	return 0;

}

#endif



static SIMPLE_DEV_PM_OPS(s3c_rtc_pm_ops, s3c_rtc_suspend, s3c_rtc_resume);



#ifdef CONFIG_OF

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