Merge branches 'msm-fixes' and 'msm-video' of git://codeaurora.org/quic/kernel/dwalke...

[pandora-kernel.git] / drivers / rtc / rtc-s3c.c

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index f57a87f..cf953ec 100644 (file)
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -100,7 +100,7 @@ static int s3c_rtc_setpie(struct device *dev, int enabled)
        spin_lock_irq(&s3c_rtc_pie_lock);
 
        if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
-               tmp = readb(s3c_rtc_base + S3C2410_RTCCON);
+               tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
                tmp &= ~S3C64XX_RTCCON_TICEN;
 
                if (enabled)
@@ -171,8 +171,8 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
                goto retry_get_time;
        }
 
-       pr_debug("read time %02x.%02x.%02x %02x/%02x/%02x\n",
-                rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
+       pr_debug("read time %04d.%02d.%02d %02d:%02d:%02d\n",
+                1900 + rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
                 rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
 
        rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
@@ -185,7 +185,7 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
        rtc_tm->tm_year += 100;
        rtc_tm->tm_mon -= 1;
 
-       return 0;
+       return rtc_valid_tm(rtc_tm);
 }
 
 static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
@@ -193,8 +193,8 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
        void __iomem *base = s3c_rtc_base;
        int year = tm->tm_year - 100;
 
-       pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
-                tm->tm_year, tm->tm_mon, tm->tm_mday,
+       pr_debug("set time %04d.%02d.%02d %02d:%02d:%02d\n",
+                1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
                 tm->tm_hour, tm->tm_min, tm->tm_sec);
 
        /* we get around y2k by simply not supporting it */
@@ -231,9 +231,9 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
 
        alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
 
-       pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n",
+       pr_debug("read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
                 alm_en,
-                alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
+                1900 + alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
                 alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
 
 
@@ -242,34 +242,34 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
        if (alm_en & S3C2410_RTCALM_SECEN)
                alm_tm->tm_sec = bcd2bin(alm_tm->tm_sec);
        else
-               alm_tm->tm_sec = 0xff;
+               alm_tm->tm_sec = -1;
 
        if (alm_en & S3C2410_RTCALM_MINEN)
                alm_tm->tm_min = bcd2bin(alm_tm->tm_min);
        else
-               alm_tm->tm_min = 0xff;
+               alm_tm->tm_min = -1;
 
        if (alm_en & S3C2410_RTCALM_HOUREN)
                alm_tm->tm_hour = bcd2bin(alm_tm->tm_hour);
        else
-               alm_tm->tm_hour = 0xff;
+               alm_tm->tm_hour = -1;
 
        if (alm_en & S3C2410_RTCALM_DAYEN)
                alm_tm->tm_mday = bcd2bin(alm_tm->tm_mday);
        else
-               alm_tm->tm_mday = 0xff;
+               alm_tm->tm_mday = -1;
 
        if (alm_en & S3C2410_RTCALM_MONEN) {
                alm_tm->tm_mon = bcd2bin(alm_tm->tm_mon);
                alm_tm->tm_mon -= 1;
        } else {
-               alm_tm->tm_mon = 0xff;
+               alm_tm->tm_mon = -1;
        }
 
        if (alm_en & S3C2410_RTCALM_YEAREN)
                alm_tm->tm_year = bcd2bin(alm_tm->tm_year);
        else
-               alm_tm->tm_year = 0xffff;
+               alm_tm->tm_year = -1;
 
        return 0;
 }
@@ -280,10 +280,10 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
        void __iomem *base = s3c_rtc_base;
        unsigned int alrm_en;
 
-       pr_debug("s3c_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n",
+       pr_debug("s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
                 alrm->enabled,
-                tm->tm_mday & 0xff, tm->tm_mon & 0xff, tm->tm_year & 0xff,
-                tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec);
+                1900 + tm->tm_year, tm->tm_mon, tm->tm_mday,
+                tm->tm_hour, tm->tm_min, tm->tm_sec);
 
 
        alrm_en = readb(base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
@@ -318,7 +318,7 @@ static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
        unsigned int ticnt;
 
        if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
-               ticnt = readb(s3c_rtc_base + S3C2410_RTCCON);
+               ticnt = readw(s3c_rtc_base + S3C2410_RTCCON);
                ticnt &= S3C64XX_RTCCON_TICEN;
        } else {
                ticnt = readb(s3c_rtc_base + S3C2410_TICNT);
@@ -379,7 +379,8 @@ static const struct rtc_class_ops s3c_rtcops = {
        .set_alarm      = s3c_rtc_setalarm,
        .irq_set_freq   = s3c_rtc_setfreq,
        .irq_set_state  = s3c_rtc_setpie,
-       .proc           = s3c_rtc_proc,
+       .proc           = s3c_rtc_proc,
+       .alarm_irq_enable = s3c_rtc_setaie,
 };
 
 static void s3c_rtc_enable(struct platform_device *pdev, int en)
@@ -391,11 +392,11 @@ static void s3c_rtc_enable(struct platform_device *pdev, int en)
                return;
 
        if (!en) {
-               tmp = readb(base + S3C2410_RTCCON);
+               tmp = readw(base + S3C2410_RTCCON);
                if (s3c_rtc_cpu_type == TYPE_S3C64XX)
                        tmp &= ~S3C64XX_RTCCON_TICEN;
                tmp &= ~S3C2410_RTCCON_RTCEN;
-               writeb(tmp, base + S3C2410_RTCCON);
+               writew(tmp, base + S3C2410_RTCCON);
 
                if (s3c_rtc_cpu_type == TYPE_S3C2410) {
                        tmp = readb(base + S3C2410_TICNT);
@@ -405,25 +406,28 @@ static void s3c_rtc_enable(struct platform_device *pdev, int en)
        } else {
                /* re-enable the device, and check it is ok */
 
-               if ((readb(base+S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){
+               if ((readw(base+S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0) {
                        dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
 
-                       tmp = readb(base + S3C2410_RTCCON);
-                       writeb(tmp|S3C2410_RTCCON_RTCEN, base+S3C2410_RTCCON);
+                       tmp = readw(base + S3C2410_RTCCON);
+                       writew(tmp | S3C2410_RTCCON_RTCEN,
+                               base + S3C2410_RTCCON);
                }
 
-               if ((readb(base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){
+               if ((readw(base + S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)) {
                        dev_info(&pdev->dev, "removing RTCCON_CNTSEL\n");
 
-                       tmp = readb(base + S3C2410_RTCCON);
-                       writeb(tmp& ~S3C2410_RTCCON_CNTSEL, base+S3C2410_RTCCON);
+                       tmp = readw(base + S3C2410_RTCCON);
+                       writew(tmp & ~S3C2410_RTCCON_CNTSEL,
+                               base + S3C2410_RTCCON);
                }
 
-               if ((readb(base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){
+               if ((readw(base + S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)) {
                        dev_info(&pdev->dev, "removing RTCCON_CLKRST\n");
 
-                       tmp = readb(base + S3C2410_RTCCON);
-                       writeb(tmp & ~S3C2410_RTCCON_CLKRST, base+S3C2410_RTCCON);
+                       tmp = readw(base + S3C2410_RTCCON);
+                       writew(tmp & ~S3C2410_RTCCON_CLKRST,
+                               base + S3C2410_RTCCON);
                }
        }
 }
@@ -452,8 +456,8 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev)
 static int __devinit s3c_rtc_probe(struct platform_device *pdev)
 {
        struct rtc_device *rtc;
+       struct rtc_time rtc_tm;
        struct resource *res;
-       unsigned int tmp, i;
        int ret;
 
        pr_debug("%s: probe=%p\n", __func__, pdev);
@@ -514,8 +518,8 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
 
        s3c_rtc_enable(pdev, 1);
 
-       pr_debug("s3c2410_rtc: RTCCON=%02x\n",
-                readb(s3c_rtc_base + S3C2410_RTCCON));
+       pr_debug("s3c2410_rtc: RTCCON=%02x\n",
+                readw(s3c_rtc_base + S3C2410_RTCCON));
 
        device_init_wakeup(&pdev->dev, 1);
 
@@ -534,11 +538,19 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
 
        /* Check RTC Time */
 
-       for (i = S3C2410_RTCSEC; i <= S3C2410_RTCYEAR; i += 0x4) {
-               tmp = readb(s3c_rtc_base + i);
+       s3c_rtc_gettime(NULL, &rtc_tm);
+
+       if (rtc_valid_tm(&rtc_tm)) {
+               rtc_tm.tm_year  = 100;
+               rtc_tm.tm_mon   = 0;
+               rtc_tm.tm_mday  = 1;
+               rtc_tm.tm_hour  = 0;
+               rtc_tm.tm_min   = 0;
+               rtc_tm.tm_sec   = 0;
+
+               s3c_rtc_settime(NULL, &rtc_tm);
 
-               if ((tmp & 0xf) > 0x9 || ((tmp >> 4) & 0xf) > 0x9)
-                       writeb(0, s3c_rtc_base + i);
+               dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
        }
 
        if (s3c_rtc_cpu_type == TYPE_S3C64XX)
@@ -578,7 +590,7 @@ static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state)
        /* save TICNT for anyone using periodic interrupts */
        ticnt_save = readb(s3c_rtc_base + S3C2410_TICNT);
        if (s3c_rtc_cpu_type == TYPE_S3C64XX) {
-               ticnt_en_save = readb(s3c_rtc_base + S3C2410_RTCCON);
+               ticnt_en_save = readw(s3c_rtc_base + S3C2410_RTCCON);
                ticnt_en_save &= S3C64XX_RTCCON_TICEN;
        }
        s3c_rtc_enable(pdev, 0);
@@ -596,8 +608,8 @@ static int s3c_rtc_resume(struct platform_device *pdev)
        s3c_rtc_enable(pdev, 1);
        writeb(ticnt_save, s3c_rtc_base + S3C2410_TICNT);
        if (s3c_rtc_cpu_type == TYPE_S3C64XX && ticnt_en_save) {
-               tmp = readb(s3c_rtc_base + S3C2410_RTCCON);
-               writeb(tmp | ticnt_en_save, s3c_rtc_base + S3C2410_RTCCON);
+               tmp = readw(s3c_rtc_base + S3C2410_RTCCON);
+               writew(tmp | ticnt_en_save, s3c_rtc_base + S3C2410_RTCCON);
        }
 
        if (device_may_wakeup(&pdev->dev))