MN10300: Generic time support

Implement generic time support for MN10300.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 21 insertions, 27 deletions

diff --git a/arch/mn10300/unit-asb2303/include/unit/timex.h b/arch/mn10300/unit-asb2303/include/unit/timex.h
index d1b8dafe7d7..cc18fe7d8b9 100644
--- a/arch/mn10300/unit-asb2303/include/unit/timex.h
+++ b/arch/mn10300/unit-asb2303/include/unit/timex.h
@@ -1,6 +1,6 @@
 /* ASB2303-specific timer specifications
  *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2007, 2010 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
  * This program is free software; you can redistribute it and/or
@@ -24,10 +24,6 @@
  */
 
 #define TMJCBR_MAX              0xffff
-#define TMJCBC                  TM01BC
-
-#define TMJCMD                  TM01MD
-#define TMJCBR                  TM01BR
 #define TMJCIRQ                 TM1IRQ
 #define TMJCICR                 TM1ICR
 
@@ -61,34 +57,32 @@
 #define MN10300_JC_PER_HZ       ((MN10300_JCCLK + HZ / 2) / HZ)
 #define MN10300_TSC_PER_HZ      ((MN10300_TSCCLK + HZ / 2) / HZ)
 
-static inline void startup_jiffies_counter(void)
+static inline void stop_jiffies_counter(void)
 {
-        u16 md, t16;
+        u16 tmp;
+        TM01MD = JC_TIMER_CLKSRC | TM1MD_SRC_TM0CASCADE << 8;
+        tmp = TM01MD;
+}
 
-        md = JC_TIMER_CLKSRC;
-        TMJCBR = MN10300_JC_PER_HZ - 1;
-        t16 = TMJCBR;
+static inline void reload_jiffies_counter(u32 cnt)
+{
+        u32 tmp;
 
-        TMJCMD =
-                md |
-                TM1MD_SRC_TM0CASCADE << 8 |
-                TM0MD_INIT_COUNTER |
-                TM1MD_INIT_COUNTER << 8;
+        TM01BR = cnt;
+        tmp = TM01BR;
 
-        TMJCMD =
-                md |
-                TM1MD_SRC_TM0CASCADE << 8 |
-                TM0MD_COUNT_ENABLE |
-                TM1MD_COUNT_ENABLE << 8;
+        TM01MD = JC_TIMER_CLKSRC |              \
+                 TM1MD_SRC_TM0CASCADE << 8 |    \
+                 TM0MD_INIT_COUNTER |           \
+                 TM1MD_INIT_COUNTER << 8;
 
-        t16 = TMJCMD;
 
-        TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
-        t16 = TMJCICR;
-}
+        TM01MD = JC_TIMER_CLKSRC |              \
+                 TM1MD_SRC_TM0CASCADE << 8 |    \
+                 TM0MD_COUNT_ENABLE |           \
+                 TM1MD_COUNT_ENABLE << 8;
 
-static inline void shutdown_jiffies_counter(void)
-{
+        tmp = TM01MD;
 }
 
 #endif /* !__ASSEMBLY__ */
@@ -148,7 +142,7 @@ typedef unsigned long cycles_t;
 
 static inline cycles_t read_timestamp_counter(void)
 {
-        return (cycles_t)TMTSCBC;
+        return (cycles_t)~TMTSCBC;
 }
 
 #endif /* !__ASSEMBLY__ */