[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>
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index d6d1bff..aacbfea 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -69,12 +69,12 @@
pr_debug("%s: aie=%d\n", __FUNCTION__, to);
- tmp = readb(S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
+ tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
if (to)
tmp |= S3C2410_RTCALM_ALMEN;
- writeb(tmp, S3C2410_RTCALM);
+ writeb(tmp, s3c_rtc_base + S3C2410_RTCALM);
}
static void s3c_rtc_setpie(int to)
@@ -84,12 +84,12 @@
pr_debug("%s: pie=%d\n", __FUNCTION__, to);
spin_lock_irq(&s3c_rtc_pie_lock);
- tmp = readb(S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE;
+ tmp = readb(s3c_rtc_base + S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE;
if (to)
tmp |= S3C2410_TICNT_ENABLE;
- writeb(tmp, S3C2410_TICNT);
+ writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
spin_unlock_irq(&s3c_rtc_pie_lock);
}
@@ -98,13 +98,13 @@
unsigned int tmp;
spin_lock_irq(&s3c_rtc_pie_lock);
- tmp = readb(S3C2410_TICNT) & S3C2410_TICNT_ENABLE;
+ tmp = readb(s3c_rtc_base + S3C2410_TICNT) & S3C2410_TICNT_ENABLE;
s3c_rtc_freq = freq;
tmp |= (128 / freq)-1;
- writeb(tmp, S3C2410_TICNT);
+ writeb(tmp, s3c_rtc_base + S3C2410_TICNT);
spin_unlock_irq(&s3c_rtc_pie_lock);
}
@@ -113,14 +113,15 @@
static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
{
unsigned int have_retried = 0;
+ void __iomem *base = s3c_rtc_base;
retry_get_time:
- rtc_tm->tm_min = readb(S3C2410_RTCMIN);
- rtc_tm->tm_hour = readb(S3C2410_RTCHOUR);
- rtc_tm->tm_mday = readb(S3C2410_RTCDATE);
- rtc_tm->tm_mon = readb(S3C2410_RTCMON);
- rtc_tm->tm_year = readb(S3C2410_RTCYEAR);
- rtc_tm->tm_sec = readb(S3C2410_RTCSEC);
+ 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);
/* the only way to work out wether the system was mid-update
* when we read it is to check the second counter, and if it
@@ -151,17 +152,25 @@
static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
{
+ void __iomem *base = s3c_rtc_base;
+
/* the rtc gets round the y2k problem by just not supporting it */
- if (tm->tm_year < 100)
+ if (tm->tm_year > 100) {
+ dev_err(dev, "rtc only supports 100 years\n");
return -EINVAL;
+ }
- writeb(BIN2BCD(tm->tm_sec), S3C2410_RTCSEC);
- writeb(BIN2BCD(tm->tm_min), S3C2410_RTCMIN);
- writeb(BIN2BCD(tm->tm_hour), S3C2410_RTCHOUR);
- writeb(BIN2BCD(tm->tm_mday), S3C2410_RTCDATE);
- writeb(BIN2BCD(tm->tm_mon + 1), S3C2410_RTCMON);
- writeb(BIN2BCD(tm->tm_year - 100), S3C2410_RTCYEAR);
+ pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
+ tm->tm_year, tm->tm_mon, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ 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(tm->tm_year - 100), base + S3C2410_RTCYEAR);
return 0;
}
@@ -169,16 +178,17 @@
static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct rtc_time *alm_tm = &alrm->time;
+ void __iomem *base = s3c_rtc_base;
unsigned int alm_en;
- alm_tm->tm_sec = readb(S3C2410_ALMSEC);
- alm_tm->tm_min = readb(S3C2410_ALMMIN);
- alm_tm->tm_hour = readb(S3C2410_ALMHOUR);
- alm_tm->tm_mon = readb(S3C2410_ALMMON);
- alm_tm->tm_mday = readb(S3C2410_ALMDATE);
- alm_tm->tm_year = readb(S3C2410_ALMYEAR);
+ 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);
- alm_en = readb(S3C2410_RTCALM);
+ alm_en = readb(base + S3C2410_RTCALM);
pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n",
alm_en,
@@ -226,6 +236,7 @@
static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct rtc_time *tm = &alrm->time;
+ void __iomem *base = s3c_rtc_base;
unsigned int alrm_en;
pr_debug("s3c_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n",
@@ -234,32 +245,32 @@
tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec);
- alrm_en = readb(S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
- writeb(0x00, S3C2410_RTCALM);
+ alrm_en = readb(base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
+ writeb(0x00, base + S3C2410_RTCALM);
if (tm->tm_sec < 60 && tm->tm_sec >= 0) {
alrm_en |= S3C2410_RTCALM_SECEN;
- writeb(BIN2BCD(tm->tm_sec), S3C2410_ALMSEC);
+ writeb(BIN2BCD(tm->tm_sec), base + S3C2410_ALMSEC);
}
if (tm->tm_min < 60 && tm->tm_min >= 0) {
alrm_en |= S3C2410_RTCALM_MINEN;
- writeb(BIN2BCD(tm->tm_min), S3C2410_ALMMIN);
+ writeb(BIN2BCD(tm->tm_min), base + S3C2410_ALMMIN);
}
if (tm->tm_hour < 24 && tm->tm_hour >= 0) {
alrm_en |= S3C2410_RTCALM_HOUREN;
- writeb(BIN2BCD(tm->tm_hour), S3C2410_ALMHOUR);
+ writeb(BIN2BCD(tm->tm_hour), base + S3C2410_ALMHOUR);
}
pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en);
- writeb(alrm_en, S3C2410_RTCALM);
+ writeb(alrm_en, base + S3C2410_RTCALM);
if (0) {
- alrm_en = readb(S3C2410_RTCALM);
+ alrm_en = readb(base + S3C2410_RTCALM);
alrm_en &= ~S3C2410_RTCALM_ALMEN;
- writeb(alrm_en, S3C2410_RTCALM);
+ writeb(alrm_en, base + S3C2410_RTCALM);
disable_irq_wake(s3c_rtc_alarmno);
}
@@ -319,8 +330,8 @@
static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
{
- unsigned int rtcalm = readb(S3C2410_RTCALM);
- unsigned int ticnt = readb (S3C2410_TICNT);
+ unsigned int rtcalm = readb(s3c_rtc_base + S3C2410_RTCALM);
+ unsigned int ticnt = readb(s3c_rtc_base + S3C2410_TICNT);
seq_printf(seq, "alarm_IRQ\t: %s\n",
(rtcalm & S3C2410_RTCALM_ALMEN) ? "yes" : "no" );
@@ -387,39 +398,40 @@
static void s3c_rtc_enable(struct platform_device *pdev, int en)
{
+ void __iomem *base = s3c_rtc_base;
unsigned int tmp;
if (s3c_rtc_base == NULL)
return;
if (!en) {
- tmp = readb(S3C2410_RTCCON);
- writeb(tmp & ~S3C2410_RTCCON_RTCEN, S3C2410_RTCCON);
+ tmp = readb(base + S3C2410_RTCCON);
+ writeb(tmp & ~S3C2410_RTCCON_RTCEN, base + S3C2410_RTCCON);
- tmp = readb(S3C2410_TICNT);
- writeb(tmp & ~S3C2410_TICNT_ENABLE, S3C2410_TICNT);
+ tmp = readb(base + S3C2410_TICNT);
+ writeb(tmp & ~S3C2410_TICNT_ENABLE, base + S3C2410_TICNT);
} else {
/* re-enable the device, and check it is ok */
- if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){
+ if ((readb(base+S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){
dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
- tmp = readb(S3C2410_RTCCON);
- writeb(tmp | S3C2410_RTCCON_RTCEN , S3C2410_RTCCON);
+ tmp = readb(base + S3C2410_RTCCON);
+ writeb(tmp|S3C2410_RTCCON_RTCEN, base+S3C2410_RTCCON);
}
- if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){
+ if ((readb(base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){
dev_info(&pdev->dev, "removing RTCCON_CNTSEL\n");
- tmp = readb(S3C2410_RTCCON);
- writeb(tmp& ~S3C2410_RTCCON_CNTSEL , S3C2410_RTCCON);
+ tmp = readb(base + S3C2410_RTCCON);
+ writeb(tmp& ~S3C2410_RTCCON_CNTSEL, base+S3C2410_RTCCON);
}
- if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){
+ if ((readb(base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){
dev_info(&pdev->dev, "removing RTCCON_CLKRST\n");
- tmp = readb(S3C2410_RTCCON);
- writeb(tmp & ~S3C2410_RTCCON_CLKRST, S3C2410_RTCCON);
+ tmp = readb(base + S3C2410_RTCCON);
+ writeb(tmp & ~S3C2410_RTCCON_CLKRST, base+S3C2410_RTCCON);
}
}
}
@@ -475,8 +487,8 @@
}
s3c_rtc_mem = request_mem_region(res->start,
- res->end-res->start+1,
- pdev->name);
+ res->end-res->start+1,
+ pdev->name);
if (s3c_rtc_mem == NULL) {
dev_err(&pdev->dev, "failed to reserve memory region\n");
@@ -495,7 +507,8 @@
s3c_rtc_enable(pdev, 1);
- pr_debug("s3c2410_rtc: RTCCON=%02x\n", readb(S3C2410_RTCCON));
+ pr_debug("s3c2410_rtc: RTCCON=%02x\n",
+ readb(s3c_rtc_base + S3C2410_RTCCON));
s3c_rtc_setfreq(s3c_rtc_freq);
@@ -543,7 +556,7 @@
/* save TICNT for anyone using periodic interrupts */
- ticnt_save = readb(S3C2410_TICNT);
+ ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
/* calculate time delta for suspend */
@@ -567,7 +580,7 @@
rtc_tm_to_time(&tm, &time.tv_sec);
restore_time_delta(&s3c_rtc_delta, &time);
- writeb(ticnt_save, S3C2410_TICNT);
+ writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
return 0;
}
#else