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: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>hifive-unleashed-5.1
Chanwoo Choi
Linus Torvalds
parent
473b864512
commit
19be09f51d
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@ -43,125 +43,132 @@ struct s3c_rtc_drv_data {
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int cpu_type;
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};
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/* I have yet to find an S3C implementation with more than one
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* of these rtc blocks in */
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struct s3c_rtc {
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struct device *dev;
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struct rtc_device *rtc;
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static struct clk *rtc_clk;
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static void __iomem *s3c_rtc_base;
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static int s3c_rtc_alarmno;
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static int s3c_rtc_tickno;
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static enum s3c_cpu_type s3c_rtc_cpu_type;
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void __iomem *base;
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struct clk *rtc_clk;
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bool enabled;
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static DEFINE_SPINLOCK(s3c_rtc_pie_lock);
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enum s3c_cpu_type cpu_type;
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static void s3c_rtc_alarm_clk_enable(bool enable)
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int irq_alarm;
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int irq_tick;
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spinlock_t pie_lock;
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spinlock_t alarm_clk_lock;
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int ticnt_save, ticnt_en_save;
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bool wake_en;
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};
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static void s3c_rtc_alarm_clk_enable(struct s3c_rtc *info, bool enable)
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{
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static DEFINE_SPINLOCK(s3c_rtc_alarm_clk_lock);
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static bool alarm_clk_enabled;
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unsigned long irq_flags;
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spin_lock_irqsave(&s3c_rtc_alarm_clk_lock, irq_flags);
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spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
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if (enable) {
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if (!alarm_clk_enabled) {
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clk_enable(rtc_clk);
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alarm_clk_enabled = true;
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if (!info->enabled) {
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clk_enable(info->rtc_clk);
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info->enabled = true;
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}
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} else {
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if (alarm_clk_enabled) {
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clk_disable(rtc_clk);
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alarm_clk_enabled = false;
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if (info->enabled) {
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clk_disable(info->rtc_clk);
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info->enabled = false;
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}
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}
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spin_unlock_irqrestore(&s3c_rtc_alarm_clk_lock, irq_flags);
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spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
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}
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/* IRQ Handlers */
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static irqreturn_t s3c_rtc_alarmirq(int irq, void *id)
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{
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struct rtc_device *rdev = id;
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struct s3c_rtc *info = (struct s3c_rtc *)id;
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clk_enable(rtc_clk);
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rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);
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clk_enable(info->rtc_clk);
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rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
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if (s3c_rtc_cpu_type == TYPE_S3C64XX)
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writeb(S3C2410_INTP_ALM, s3c_rtc_base + S3C2410_INTP);
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if (info->cpu_type == TYPE_S3C64XX)
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writeb(S3C2410_INTP_ALM, info->base + S3C2410_INTP);
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clk_disable(rtc_clk);
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clk_disable(info->rtc_clk);
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s3c_rtc_alarm_clk_enable(false);
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s3c_rtc_alarm_clk_enable(info, false);
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return IRQ_HANDLED;
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}
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static irqreturn_t s3c_rtc_tickirq(int irq, void *id)
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{
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struct rtc_device *rdev = id;
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struct s3c_rtc *info = (struct s3c_rtc *)id;
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clk_enable(rtc_clk);
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rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF);
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clk_enable(info->rtc_clk);
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rtc_update_irq(info->rtc, 1, RTC_PF | RTC_IRQF);
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if (s3c_rtc_cpu_type == TYPE_S3C64XX)
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writeb(S3C2410_INTP_TIC, s3c_rtc_base + S3C2410_INTP);
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if (info->cpu_type == TYPE_S3C64XX)
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writeb(S3C2410_INTP_TIC, info->base + S3C2410_INTP);
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clk_disable(info->rtc_clk);
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clk_disable(rtc_clk);
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return IRQ_HANDLED;
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}
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/* Update control registers */
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static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
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{
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struct s3c_rtc *info = dev_get_drvdata(dev);
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unsigned int tmp;
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dev_dbg(dev, "%s: aie=%d\n", __func__, enabled);
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dev_dbg(info->dev, "%s: aie=%d\n", __func__, enabled);
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clk_enable(rtc_clk);
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tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
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clk_enable(info->rtc_clk);
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tmp = readb(info->base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
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if (enabled)
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tmp |= S3C2410_RTCALM_ALMEN;
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writeb(tmp, s3c_rtc_base + S3C2410_RTCALM);
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clk_disable(rtc_clk);
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writeb(tmp, info->base + S3C2410_RTCALM);
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clk_disable(info->rtc_clk);
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s3c_rtc_alarm_clk_enable(enabled);
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s3c_rtc_alarm_clk_enable(info, enabled);
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return 0;
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}
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static int s3c_rtc_setfreq(struct device *dev, int freq)
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static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
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unsigned int tmp = 0;
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int val;
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if (!is_power_of_2(freq))
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return -EINVAL;
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clk_enable(rtc_clk);
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spin_lock_irq(&s3c_rtc_pie_lock);
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clk_enable(info->rtc_clk);
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spin_lock_irq(&info->pie_lock);
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if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
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tmp = readb(s3c_rtc_base + S3C2410_TICNT);
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if (info->cpu_type != TYPE_S3C64XX) {
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tmp = readb(info->base + S3C2410_TICNT);
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tmp &= S3C2410_TICNT_ENABLE;
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}
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val = (rtc_dev->max_user_freq / freq) - 1;
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val = (info->rtc->max_user_freq / freq) - 1;
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if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {
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if (info->cpu_type == TYPE_S3C2416 || info->cpu_type == TYPE_S3C2443) {
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tmp |= S3C2443_TICNT_PART(val);
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writel(S3C2443_TICNT1_PART(val), s3c_rtc_base + S3C2443_TICNT1);
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writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1);
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if (s3c_rtc_cpu_type == TYPE_S3C2416)
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writel(S3C2416_TICNT2_PART(val), s3c_rtc_base + S3C2416_TICNT2);
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if (info->cpu_type == TYPE_S3C2416)
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writel(S3C2416_TICNT2_PART(val),
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info->base + S3C2416_TICNT2);
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} else {
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tmp |= val;
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}
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writel(tmp, s3c_rtc_base + S3C2410_TICNT);
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spin_unlock_irq(&s3c_rtc_pie_lock);
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clk_disable(rtc_clk);
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writel(tmp, info->base + S3C2410_TICNT);
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spin_unlock_irq(&info->pie_lock);
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clk_disable(info->rtc_clk);
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return 0;
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}
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@ -170,17 +177,17 @@ static int s3c_rtc_setfreq(struct device *dev, int freq)
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static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
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{
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struct s3c_rtc *info = dev_get_drvdata(dev);
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unsigned int have_retried = 0;
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void __iomem *base = s3c_rtc_base;
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clk_enable(rtc_clk);
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clk_enable(info->rtc_clk);
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retry_get_time:
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rtc_tm->tm_min = readb(base + S3C2410_RTCMIN);
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rtc_tm->tm_hour = readb(base + S3C2410_RTCHOUR);
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rtc_tm->tm_mday = readb(base + S3C2410_RTCDATE);
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rtc_tm->tm_mon = readb(base + S3C2410_RTCMON);
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rtc_tm->tm_year = readb(base + S3C2410_RTCYEAR);
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rtc_tm->tm_sec = readb(base + S3C2410_RTCSEC);
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rtc_tm->tm_min = readb(info->base + S3C2410_RTCMIN);
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rtc_tm->tm_hour = readb(info->base + S3C2410_RTCHOUR);
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rtc_tm->tm_mday = readb(info->base + S3C2410_RTCDATE);
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rtc_tm->tm_mon = readb(info->base + S3C2410_RTCMON);
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rtc_tm->tm_year = readb(info->base + S3C2410_RTCYEAR);
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rtc_tm->tm_sec = readb(info->base + S3C2410_RTCSEC);
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/* the only way to work out whether the system was mid-update
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* when we read it is to check the second counter, and if it
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@ -207,13 +214,14 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
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rtc_tm->tm_mon -= 1;
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clk_disable(rtc_clk);
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clk_disable(info->rtc_clk);
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return rtc_valid_tm(rtc_tm);
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}
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static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
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{
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void __iomem *base = s3c_rtc_base;
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struct s3c_rtc *info = dev_get_drvdata(dev);
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int year = tm->tm_year - 100;
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dev_dbg(dev, "set time %04d.%02d.%02d %02d:%02d:%02d\n",
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@ -227,33 +235,35 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
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return -EINVAL;
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}
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clk_enable(rtc_clk);
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writeb(bin2bcd(tm->tm_sec), base + S3C2410_RTCSEC);
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writeb(bin2bcd(tm->tm_min), base + S3C2410_RTCMIN);
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writeb(bin2bcd(tm->tm_hour), base + S3C2410_RTCHOUR);
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writeb(bin2bcd(tm->tm_mday), base + S3C2410_RTCDATE);
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writeb(bin2bcd(tm->tm_mon + 1), base + S3C2410_RTCMON);
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writeb(bin2bcd(year), base + S3C2410_RTCYEAR);
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clk_disable(rtc_clk);
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clk_enable(info->rtc_clk);
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writeb(bin2bcd(tm->tm_sec), info->base + S3C2410_RTCSEC);
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writeb(bin2bcd(tm->tm_min), info->base + S3C2410_RTCMIN);
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writeb(bin2bcd(tm->tm_hour), info->base + S3C2410_RTCHOUR);
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writeb(bin2bcd(tm->tm_mday), info->base + S3C2410_RTCDATE);
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writeb(bin2bcd(tm->tm_mon + 1), info->base + S3C2410_RTCMON);
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writeb(bin2bcd(year), info->base + S3C2410_RTCYEAR);
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clk_disable(info->rtc_clk);
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return 0;
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}
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static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
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{
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struct s3c_rtc *info = dev_get_drvdata(dev);
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struct rtc_time *alm_tm = &alrm->time;
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void __iomem *base = s3c_rtc_base;
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unsigned int alm_en;
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clk_enable(rtc_clk);
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alm_tm->tm_sec = readb(base + S3C2410_ALMSEC);
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alm_tm->tm_min = readb(base + S3C2410_ALMMIN);
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alm_tm->tm_hour = readb(base + S3C2410_ALMHOUR);
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alm_tm->tm_mon = readb(base + S3C2410_ALMMON);
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alm_tm->tm_mday = readb(base + S3C2410_ALMDATE);
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alm_tm->tm_year = readb(base + S3C2410_ALMYEAR);
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clk_enable(info->rtc_clk);
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alm_tm->tm_sec = readb(info->base + S3C2410_ALMSEC);
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alm_tm->tm_min = readb(info->base + S3C2410_ALMMIN);
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alm_tm->tm_hour = readb(info->base + S3C2410_ALMHOUR);
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alm_tm->tm_mon = readb(info->base + S3C2410_ALMMON);
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alm_tm->tm_mday = readb(info->base + S3C2410_ALMDATE);
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alm_tm->tm_year = readb(info->base + S3C2410_ALMYEAR);
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alm_en = readb(base + S3C2410_RTCALM);
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alm_en = readb(info->base + S3C2410_RTCALM);
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alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
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@ -297,65 +307,67 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
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else
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alm_tm->tm_year = -1;
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clk_disable(rtc_clk);
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clk_disable(info->rtc_clk);
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return 0;
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}
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static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
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{
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struct s3c_rtc *info = dev_get_drvdata(dev);
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struct rtc_time *tm = &alrm->time;
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void __iomem *base = s3c_rtc_base;
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unsigned int alrm_en;
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clk_enable(rtc_clk);
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clk_enable(info->rtc_clk);
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dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
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alrm->enabled,
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1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
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tm->tm_hour, tm->tm_min, tm->tm_sec);
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alrm_en = readb(base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
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writeb(0x00, base + S3C2410_RTCALM);
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alrm_en = readb(info->base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
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writeb(0x00, info->base + S3C2410_RTCALM);
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if (tm->tm_sec < 60 && tm->tm_sec >= 0) {
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alrm_en |= S3C2410_RTCALM_SECEN;
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writeb(bin2bcd(tm->tm_sec), base + S3C2410_ALMSEC);
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writeb(bin2bcd(tm->tm_sec), info->base + S3C2410_ALMSEC);
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}
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if (tm->tm_min < 60 && tm->tm_min >= 0) {
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alrm_en |= S3C2410_RTCALM_MINEN;
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writeb(bin2bcd(tm->tm_min), base + S3C2410_ALMMIN);
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writeb(bin2bcd(tm->tm_min), info->base + S3C2410_ALMMIN);
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}
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if (tm->tm_hour < 24 && tm->tm_hour >= 0) {
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alrm_en |= S3C2410_RTCALM_HOUREN;
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writeb(bin2bcd(tm->tm_hour), base + S3C2410_ALMHOUR);
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writeb(bin2bcd(tm->tm_hour), info->base + S3C2410_ALMHOUR);
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}
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dev_dbg(dev, "setting S3C2410_RTCALM to %08x\n", alrm_en);
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writeb(alrm_en, base + S3C2410_RTCALM);
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writeb(alrm_en, info->base + S3C2410_RTCALM);
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s3c_rtc_setaie(dev, alrm->enabled);
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clk_disable(rtc_clk);
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clk_disable(info->rtc_clk);
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return 0;
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}
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static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
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{
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struct s3c_rtc *info = dev_get_drvdata(dev);
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unsigned int ticnt;
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clk_enable(rtc_clk);
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if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
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ticnt = readw(s3c_rtc_base + S3C2410_RTCCON);
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clk_enable(info->rtc_clk);
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if (info->cpu_type == TYPE_S3C64XX) {
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ticnt = readw(info->base + S3C2410_RTCCON);
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ticnt &= S3C64XX_RTCCON_TICEN;
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} else {
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ticnt = readb(s3c_rtc_base + S3C2410_TICNT);
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ticnt = readb(info->base + S3C2410_TICNT);
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ticnt &= S3C2410_TICNT_ENABLE;
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}
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seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no");
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clk_disable(rtc_clk);
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clk_disable(info->rtc_clk);
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return 0;
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}
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@ -368,63 +380,61 @@ static const struct rtc_class_ops s3c_rtcops = {
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.alarm_irq_enable = s3c_rtc_setaie,
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};
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static void s3c_rtc_enable(struct platform_device *pdev, int en)
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static void s3c_rtc_enable(struct s3c_rtc *info, int en)
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{
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void __iomem *base = s3c_rtc_base;
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unsigned int tmp;
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if (s3c_rtc_base == NULL)
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return;
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clk_enable(rtc_clk);
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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);
|
||||
|
||||
clk_unprepare(rtc_clk);
|
||||
rtc_clk = NULL;
|
||||
s3c_rtc_setaie(info->dev, 0);
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
/* Check RTC Time */
|
||||
|
||||
s3c_rtc_gettime(NULL, &rtc_tm);
|
||||
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
|
||||
|
|
|
|||
Loading…
Reference in New Issue