Merge branch 'v3.4-next/devel-samsung-rtc' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers

* 'v3.4-next/devel-samsung-rtc' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: S3C2443/S3C2416: add s3c_rtc_setname and rename rtc devices
  rtc-s3c: add variants for S3C2443 and S3C2416
  rtc-s3c: make room for more variants in devicetree block
  ARM: SAMSUNG: cleanup of rtc register definitions

1 files changed, 58 insertions, 13 deletions

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index aef40bd2957b..78951866f8ab 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -35,6 +35,8 @@
 
 enum s3c_cpu_type {
         TYPE_S3C2410,
+        TYPE_S3C2416,
+        TYPE_S3C2443,
         TYPE_S3C64XX,
 };
 
@@ -132,6 +134,7 @@ static int s3c_rtc_setfreq(struct device *dev, 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;
@@ -139,12 +142,22 @@ static int s3c_rtc_setfreq(struct device *dev, int freq)
         clk_enable(rtc_clk);
         spin_lock_irq(&s3c_rtc_pie_lock);
 
-        if (s3c_rtc_cpu_type == TYPE_S3C2410) {
+        if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
                 tmp = readb(s3c_rtc_base + S3C2410_TICNT);
                 tmp &= S3C2410_TICNT_ENABLE;
         }
 
-        tmp |= (rtc_dev->max_user_freq / freq)-1;
+        val = (rtc_dev->max_user_freq / freq) - 1;
+
+        if (s3c_rtc_cpu_type == TYPE_S3C2416 || s3c_rtc_cpu_type == TYPE_S3C2443) {
+                tmp |= S3C2443_TICNT_PART(val);
+                writel(S3C2443_TICNT1_PART(val), s3c_rtc_base + S3C2443_TICNT1);
+
+                if (s3c_rtc_cpu_type == TYPE_S3C2416)
+                        writel(S3C2416_TICNT2_PART(val), s3c_rtc_base + S3C2416_TICNT2);
+        } else {
+                tmp |= val;
+        }
 
         writel(tmp, s3c_rtc_base + S3C2410_TICNT);
         spin_unlock_irq(&s3c_rtc_pie_lock);
@@ -371,7 +384,7 @@ static void s3c_rtc_enable(struct platform_device *pdev, int en)
                 tmp &= ~S3C2410_RTCCON_RTCEN;
                 writew(tmp, base + S3C2410_RTCCON);
 
-                if (s3c_rtc_cpu_type == TYPE_S3C2410) {
+                if (s3c_rtc_cpu_type != TYPE_S3C64XX) {
                         tmp = readb(base + S3C2410_TICNT);
                         tmp &= ~S3C2410_TICNT_ENABLE;
                         writeb(tmp, base + S3C2410_TICNT);
@@ -428,12 +441,27 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev)
         return 0;
 }
 
+static const struct of_device_id s3c_rtc_dt_match[];
+
+static inline int s3c_rtc_get_driver_data(struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+        if (pdev->dev.of_node) {
+                const struct of_device_id *match;
+                match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node);
+                return match->data;
+        }
+#endif
+        return platform_get_device_id(pdev)->driver_data;
+}
+
 static int __devinit s3c_rtc_probe(struct platform_device *pdev)
 {
         struct rtc_device *rtc;
         struct rtc_time rtc_tm;
         struct resource *res;
         int ret;
+        int tmp;
 
         pr_debug("%s: probe=%p\n", __func__, pdev);
 
@@ -508,13 +536,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
                 goto err_nortc;
         }
 
-#ifdef CONFIG_OF
-        if (pdev->dev.of_node)
-                s3c_rtc_cpu_type = of_device_is_compatible(pdev->dev.of_node,
-                        "samsung,s3c6410-rtc") ? TYPE_S3C64XX : TYPE_S3C2410;
-        else
-#endif
-                s3c_rtc_cpu_type = platform_get_device_id(pdev)->driver_data;
+        s3c_rtc_cpu_type = s3c_rtc_get_driver_data(pdev);
 
         /* Check RTC Time */
 
@@ -533,11 +555,17 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
                 dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
         }
 
-        if (s3c_rtc_cpu_type == TYPE_S3C64XX)
+        if (s3c_rtc_cpu_type != TYPE_S3C2410)
                 rtc->max_user_freq = 32768;
         else
                 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);
+                tmp |= S3C2443_RTCCON_TICSEL;
+                writew(tmp, s3c_rtc_base + S3C2410_RTCCON);
+        }
+
         platform_set_drvdata(pdev, rtc);
 
         s3c_rtc_setfreq(&pdev->dev, 1);
@@ -638,8 +666,19 @@ static int s3c_rtc_resume(struct platform_device *pdev)
 
 #ifdef CONFIG_OF
 static const struct of_device_id s3c_rtc_dt_match[] = {
-        { .compatible = "samsung,s3c2410-rtc" },
-        { .compatible = "samsung,s3c6410-rtc" },
+        {
+                .compatible = "samsung,s3c2410-rtc"
+                .data = TYPE_S3C2410,
+        }, {
+                .compatible = "samsung,s3c2416-rtc"
+                .data = TYPE_S3C2416,
+        }, {
+                .compatible = "samsung,s3c2443-rtc"
+                .data = TYPE_S3C2443,
+        }, {
+                .compatible = "samsung,s3c6410-rtc"
+                .data = TYPE_S3C64XX,
+        },
         {},
 };
 MODULE_DEVICE_TABLE(of, s3c_rtc_dt_match);
@@ -652,6 +691,12 @@ static struct platform_device_id s3c_rtc_driver_ids[] = {
                 .name           = "s3c2410-rtc",
                 .driver_data    = TYPE_S3C2410,
         }, {
+                .name           = "s3c2416-rtc",
+                .driver_data    = TYPE_S3C2416,
+        }, {
+                .name           = "s3c2443-rtc",
+                .driver_data    = TYPE_S3C2443,
+        }, {
                 .name           = "s3c64xx-rtc",
                 .driver_data    = TYPE_S3C64XX,
         },