[PATCH] CRIS update: new subarchitecture v32

[karo-tx-linux.git] / include / asm-cris / arch-v32 / timex.h

diff --git a/include/asm-cris/arch-v32/timex.h b/include/asm-cris/arch-v32/timex.h
new file mode 100644 (file)
index 0000000..4d0fd23
--- /dev/null
+++ b/include/asm-cris/arch-v32/timex.h
@@ -0,0 +1,31 @@
+#ifndef _ASM_CRIS_ARCH_TIMEX_H
+#define _ASM_CRIS_ARCH_TIMEX_H
+
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/timer_defs.h>
+
+/*
+ * The clock runs at 100MHz, we divide it by 1000000. If you change anything
+ * here you must check time.c as well.
+ */
+
+#define CLOCK_TICK_RATE 100000000      /* Underlying frequency of the HZ timer */
+
+/* The timer0 values gives 10 ns resolution but interrupts at HZ. */
+#define TIMER0_FREQ (CLOCK_TICK_RATE)
+#define TIMER0_DIV (TIMER0_FREQ/(HZ))
+
+/* Convert the value in step of 10 ns to 1us without overflow: */
+#define GET_JIFFIES_USEC() \
+  ( (TIMER0_DIV - REG_RD(timer, regi_timer, r_tmr0_data)) /100 )
+
+extern unsigned long get_ns_in_jiffie(void);
+
+extern inline unsigned long get_us_in_jiffie_highres(void)
+{
+       return get_ns_in_jiffie() / 1000;
+}
+
+#endif
+