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MN10300: Generic time support

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Implement generic time support for MN10300.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Mark Salter
2010-10-27 17:28:57 +01:00
committed by David Howells
parent 2502c64eeb
commit 730c1fad0e
12 changed files with 411 additions and 125 deletions
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54
arch/mn10300/unit-asb2303/include/unit/timex.h
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@@ -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;
md = JC_TIMER_CLKSRC;
TMJCBR = MN10300_JC_PER_HZ - 1;
t16 = TMJCBR;
TMJCMD =
md |
TM1MD_SRC_TM0CASCADE << 8 |
TM0MD_INIT_COUNTER |
TM1MD_INIT_COUNTER << 8;
TMJCMD =
md |
TM1MD_SRC_TM0CASCADE << 8 |
TM0MD_COUNT_ENABLE |
TM1MD_COUNT_ENABLE << 8;
t16 = TMJCMD;
TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
t16 = TMJCICR;
u16 tmp;
TM01MD = JC_TIMER_CLKSRC | TM1MD_SRC_TM0CASCADE << 8;
tmp = TM01MD;
}
static inline void shutdown_jiffies_counter(void)
static inline void reload_jiffies_counter(u32 cnt)
{
u32 tmp;
TM01BR = cnt;
tmp = TM01BR;
TM01MD = JC_TIMER_CLKSRC | \
TM1MD_SRC_TM0CASCADE << 8 | \
TM0MD_INIT_COUNTER | \
TM1MD_INIT_COUNTER << 8;
TM01MD = JC_TIMER_CLKSRC | \
TM1MD_SRC_TM0CASCADE << 8 | \
TM0MD_COUNT_ENABLE | \
TM1MD_COUNT_ENABLE << 8;
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__ */