From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001
From: Kevin
Date: Sat, 15 Nov 2014 09:58:27 +0800
Subject: init android origin source code

---
 ANDROID_3.4.5/arch/powerpc/include/asm/timex.h | 50 ++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 ANDROID_3.4.5/arch/powerpc/include/asm/timex.h

(limited to 'ANDROID_3.4.5/arch/powerpc/include/asm/timex.h')

diff --git a/ANDROID_3.4.5/arch/powerpc/include/asm/timex.h b/ANDROID_3.4.5/arch/powerpc/include/asm/timex.h
new file mode 100644
index 00000000..c55e14f7
--- /dev/null
+++ b/ANDROID_3.4.5/arch/powerpc/include/asm/timex.h
@@ -0,0 +1,50 @@
+#ifndef _ASM_POWERPC_TIMEX_H
+#define _ASM_POWERPC_TIMEX_H
+
+#ifdef __KERNEL__
+
+/*
+ * PowerPC architecture timex specifications
+ */
+
+#include <asm/cputable.h>
+#include <asm/reg.h>
+
+#define CLOCK_TICK_RATE	1024000 /* Underlying HZ */
+
+typedef unsigned long cycles_t;
+
+static inline cycles_t get_cycles(void)
+{
+#ifdef __powerpc64__
+	return mftb();
+#else
+	cycles_t ret;
+
+	/*
+	 * For the "cycle" counter we use the timebase lower half.
+	 * Currently only used on SMP.
+	 */
+
+	ret = 0;
+
+	__asm__ __volatile__(
+		"97:	mftb %0\n"
+		"99:\n"
+		".section __ftr_fixup,\"a\"\n"
+		".align 2\n"
+		"98:\n"
+		"	.long %1\n"
+		"	.long 0\n"
+		"	.long 97b-98b\n"
+		"	.long 99b-98b\n"
+		"	.long 0\n"
+		"	.long 0\n"
+		".previous"
+		: "=r" (ret) : "i" (CPU_FTR_601));
+	return ret;
+#endif
+}
+
+#endif	/* __KERNEL__ */
+#endif	/* _ASM_POWERPC_TIMEX_H */
-- 
cgit