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[PATCH] drivers/rtc: fix rtc-s3c.c
In the cleanups of drivers/rtc/s3c-rtc.c, the base address for the registers got broken. This patch fixes that by ensuring the readb/writeb are all prefixed with the base returned from ioremap()ing the registers. Also fix check for valid year range, which was the wrong way around. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ben Dooks
Linus Torvalds
parent
66a377c504
commit
9a654518e1
@ -69,12 +69,12 @@ static void s3c_rtc_setaie(int to)
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pr_debug("%s: aie=%d\n", __FUNCTION__, to);
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tmp = readb(S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
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tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
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if (to)
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tmp |= S3C2410_RTCALM_ALMEN;
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writeb(tmp, S3C2410_RTCALM);
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writeb(tmp, s3c_rtc_base + S3C2410_RTCALM);
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}
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static void s3c_rtc_setpie(int to)
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@ -84,12 +84,12 @@ static void s3c_rtc_setpie(int to)
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pr_debug("%s: pie=%d\n", __FUNCTION__, to);
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spin_lock_irq(&s3c_rtc_pie_lock);
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tmp = readb(S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE;
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tmp = readb(s3c_rtc_base + S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE;
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if (to)
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tmp |= S3C2410_TICNT_ENABLE;
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writeb(tmp, S3C2410_TICNT);
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writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
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spin_unlock_irq(&s3c_rtc_pie_lock);
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}
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@ -98,13 +98,13 @@ static void s3c_rtc_setfreq(int freq)
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unsigned int tmp;
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spin_lock_irq(&s3c_rtc_pie_lock);
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tmp = readb(S3C2410_TICNT) & S3C2410_TICNT_ENABLE;
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tmp = readb(s3c_rtc_base + S3C2410_TICNT) & S3C2410_TICNT_ENABLE;
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s3c_rtc_freq = freq;
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tmp |= (128 / freq)-1;
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writeb(tmp, S3C2410_TICNT);
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writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
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spin_unlock_irq(&s3c_rtc_pie_lock);
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}
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@ -113,14 +113,15 @@ static void s3c_rtc_setfreq(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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unsigned int have_retried = 0;
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void __iomem *base = s3c_rtc_base;
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retry_get_time:
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rtc_tm->tm_min = readb(S3C2410_RTCMIN);
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rtc_tm->tm_hour = readb(S3C2410_RTCHOUR);
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rtc_tm->tm_mday = readb(S3C2410_RTCDATE);
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rtc_tm->tm_mon = readb(S3C2410_RTCMON);
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rtc_tm->tm_year = readb(S3C2410_RTCYEAR);
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rtc_tm->tm_sec = readb(S3C2410_RTCSEC);
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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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/* the only way to work out wether 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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@ -151,17 +152,25 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
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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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/* the rtc gets round the y2k problem by just not supporting it */
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if (tm->tm_year < 100)
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if (tm->tm_year > 100) {
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dev_err(dev, "rtc only supports 100 years\n");
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return -EINVAL;
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}
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writeb(BIN2BCD(tm->tm_sec), S3C2410_RTCSEC);
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writeb(BIN2BCD(tm->tm_min), S3C2410_RTCMIN);
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writeb(BIN2BCD(tm->tm_hour), S3C2410_RTCHOUR);
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writeb(BIN2BCD(tm->tm_mday), S3C2410_RTCDATE);
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writeb(BIN2BCD(tm->tm_mon + 1), S3C2410_RTCMON);
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writeb(BIN2BCD(tm->tm_year - 100), S3C2410_RTCYEAR);
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pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
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tm->tm_year, tm->tm_mon, tm->tm_mday,
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tm->tm_hour, tm->tm_min, tm->tm_sec);
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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(tm->tm_year - 100), base + S3C2410_RTCYEAR);
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return 0;
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}
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@ -169,16 +178,17 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
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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 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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alm_tm->tm_sec = readb(S3C2410_ALMSEC);
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alm_tm->tm_min = readb(S3C2410_ALMMIN);
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alm_tm->tm_hour = readb(S3C2410_ALMHOUR);
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alm_tm->tm_mon = readb(S3C2410_ALMMON);
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alm_tm->tm_mday = readb(S3C2410_ALMDATE);
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alm_tm->tm_year = readb(S3C2410_ALMYEAR);
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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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alm_en = readb(S3C2410_RTCALM);
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alm_en = readb(base + S3C2410_RTCALM);
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pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n",
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alm_en,
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@ -226,6 +236,7 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
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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 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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pr_debug("s3c_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n",
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@ -234,32 +245,32 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
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tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec);
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alrm_en = readb(S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
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writeb(0x00, S3C2410_RTCALM);
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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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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), S3C2410_ALMSEC);
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writeb(BIN2BCD(tm->tm_sec), 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), S3C2410_ALMMIN);
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writeb(BIN2BCD(tm->tm_min), 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), S3C2410_ALMHOUR);
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writeb(BIN2BCD(tm->tm_hour), base + S3C2410_ALMHOUR);
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}
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pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en);
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writeb(alrm_en, S3C2410_RTCALM);
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writeb(alrm_en, base + S3C2410_RTCALM);
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if (0) {
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alrm_en = readb(S3C2410_RTCALM);
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alrm_en = readb(base + S3C2410_RTCALM);
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alrm_en &= ~S3C2410_RTCALM_ALMEN;
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writeb(alrm_en, S3C2410_RTCALM);
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writeb(alrm_en, base + S3C2410_RTCALM);
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disable_irq_wake(s3c_rtc_alarmno);
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}
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@ -319,8 +330,8 @@ static int s3c_rtc_ioctl(struct device *dev,
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static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
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{
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unsigned int rtcalm = readb(S3C2410_RTCALM);
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unsigned int ticnt = readb (S3C2410_TICNT);
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unsigned int rtcalm = readb(s3c_rtc_base + S3C2410_RTCALM);
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unsigned int ticnt = readb(s3c_rtc_base + S3C2410_TICNT);
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seq_printf(seq, "alarm_IRQ\t: %s\n",
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(rtcalm & S3C2410_RTCALM_ALMEN) ? "yes" : "no" );
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@ -387,39 +398,40 @@ static struct rtc_class_ops s3c_rtcops = {
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static void s3c_rtc_enable(struct platform_device *pdev, 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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if (!en) {
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tmp = readb(S3C2410_RTCCON);
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writeb(tmp & ~S3C2410_RTCCON_RTCEN, S3C2410_RTCCON);
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tmp = readb(base + S3C2410_RTCCON);
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writeb(tmp & ~S3C2410_RTCCON_RTCEN, base + S3C2410_RTCCON);
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tmp = readb(S3C2410_TICNT);
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writeb(tmp & ~S3C2410_TICNT_ENABLE, S3C2410_TICNT);
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tmp = readb(base + S3C2410_TICNT);
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writeb(tmp & ~S3C2410_TICNT_ENABLE, base + S3C2410_TICNT);
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} else {
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/* re-enable the device, and check it is ok */
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if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){
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if ((readb(base+S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){
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dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
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tmp = readb(S3C2410_RTCCON);
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writeb(tmp | S3C2410_RTCCON_RTCEN , S3C2410_RTCCON);
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tmp = readb(base + S3C2410_RTCCON);
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writeb(tmp|S3C2410_RTCCON_RTCEN, base+S3C2410_RTCCON);
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}
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if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){
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if ((readb(base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){
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dev_info(&pdev->dev, "removing RTCCON_CNTSEL\n");
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tmp = readb(S3C2410_RTCCON);
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writeb(tmp& ~S3C2410_RTCCON_CNTSEL , S3C2410_RTCCON);
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tmp = readb(base + S3C2410_RTCCON);
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writeb(tmp& ~S3C2410_RTCCON_CNTSEL, base+S3C2410_RTCCON);
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}
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if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){
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if ((readb(base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){
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dev_info(&pdev->dev, "removing RTCCON_CLKRST\n");
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tmp = readb(S3C2410_RTCCON);
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writeb(tmp & ~S3C2410_RTCCON_CLKRST, S3C2410_RTCCON);
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tmp = readb(base + S3C2410_RTCCON);
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writeb(tmp & ~S3C2410_RTCCON_CLKRST, base+S3C2410_RTCCON);
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}
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}
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}
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@ -495,7 +507,8 @@ static int s3c_rtc_probe(struct platform_device *pdev)
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s3c_rtc_enable(pdev, 1);
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pr_debug("s3c2410_rtc: RTCCON=%02x\n", readb(S3C2410_RTCCON));
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pr_debug("s3c2410_rtc: RTCCON=%02x\n",
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readb(s3c_rtc_base + S3C2410_RTCCON));
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s3c_rtc_setfreq(s3c_rtc_freq);
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@ -543,7 +556,7 @@ static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state)
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/* save TICNT for anyone using periodic interrupts */
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ticnt_save = readb(S3C2410_TICNT);
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ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
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/* calculate time delta for suspend */
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@ -567,7 +580,7 @@ static int s3c_rtc_resume(struct platform_device *pdev)
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rtc_tm_to_time(&tm, &time.tv_sec);
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restore_time_delta(&s3c_rtc_delta, &time);
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writeb(ticnt_save, S3C2410_TICNT);
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writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
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return 0;
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}
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#else
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@ -18,7 +18,7 @@
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#ifndef __ASM_ARCH_REGS_RTC_H
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#define __ASM_ARCH_REGS_RTC_H __FILE__
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#define S3C2410_RTCREG(x) ((x) + S3C24XX_VA_RTC)
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#define S3C2410_RTCREG(x) (x)
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#define S3C2410_RTCCON S3C2410_RTCREG(0x40)
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#define S3C2410_RTCCON_RTCEN (1<<0)
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