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yaml --- r: 105606 b: refs/heads/master c: 5bed10a h: refs/heads/master v: v3
git-mirror · Jul 23, 2008 · cee622f · cee622f
1 parent 4259146
commit cee622f
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Showing 2 changed files with 17 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 95469bd64a7a9ab405b566deb8c81d4aaf67ed9e
+refs/heads/master: 5bed10a5ee272fbf18ce0ce764245bbb8f28e2e6
diff --git a/trunk/arch/m68knommu/platform/coldfire/dma_timer.c b/trunk/arch/m68knommu/platform/coldfire/dma_timer.c
@@ -66,3 +66,19 @@ static int __init  init_cf_dt_clocksource(void)
 }
 
 arch_initcall(init_cf_dt_clocksource);
+
+#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
+#define CYC2NS_SCALE	((1000000 << CYC2NS_SCALE_FACTOR) / (DMA_FREQ / 1000))
+
+static unsigned long long cycles2ns(unsigned long cycl)
+{
+	return (unsigned long long) ((unsigned long long)cycl *
+			CYC2NS_SCALE) >> CYC2NS_SCALE_FACTOR;
+}
+
+unsigned long long sched_clock(void)
+{
+	unsigned long cycl = __raw_readl(DTCN0);
+
+	return cycles2ns(cycl);
+}