svn_rev_031

add clocksource stuff from kernel and first implementation (imx) (WIP)

1 files changed, 29 insertions, 0 deletions

diff --git a/include/clock.h b/include/clock.h
new file mode 100644
index 0000000000..a8920f1107
--- /dev/null
+++ b/include/clock.h
@@ -0,0 +1,29 @@
+
+struct clocksource {
+	uint32_t	shift;
+	uint32_t	mult;
+	uint64_t	(*read)(void);
+	uint64_t	cycle_last;
+	uint64_t	mask;
+
+};
+
+inline uint32_t cyc2ns(struct clocksource *cs, uint64_t cycles)
+{
+        uint64_t ret = cycles;
+        ret = (ret * cs->mult) >> cs->shift;
+        return ret;
+}
+
+int init_clock(struct clocksource *);
+
+uint64_t get_time_ns(void);
+
+uint32_t clocksource_hz2mult(uint32_t hz, uint32_t shift_constant);
+
+int is_timeout(uint64_t start_ns, uint64_t time_offset_ns);
+
+// void udelay(unsigned long usecs);
+
+void mdelay(unsigned long msecs);
+