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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2013-12-19 22:22:23 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2013-12-20 17:17:14 +0100 |
| commit | 53985371458fc17405c7fc277e6f05fe36965eab (patch) | |
| tree | 09bb3e5a6aaffa9541c22e09e118debe48135641 /arch/arm | |
| parent | f0402f9b47112faea10541b799b61066ae322c36 (diff) | |
| download | op-kernel-dev-53985371458fc17405c7fc277e6f05fe36965eab.zip op-kernel-dev-53985371458fc17405c7fc277e6f05fe36965eab.tar.gz | |
ARM: rpc: stop using <mach/timex.h>
The rpc timekeeping code uses the symbol LATCH which depends on
CLOCK_TICK_RATE which is defined in rpc's <mach/timex.h>. As this header
will go away in a later patch introduce a local variable holding the
same value as LATCH and use that instead.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-rpc/time.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/arm/mach-rpc/time.c b/arch/arm/mach-rpc/time.c index 9a6def1..99363ae 100644 --- a/arch/arm/mach-rpc/time.c +++ b/arch/arm/mach-rpc/time.c @@ -24,6 +24,9 @@ #include <asm/mach/time.h> +#define RPC_CLOCK_FREQ 2000000 +#define RPC_LATCH DIV_ROUND_CLOSEST(RPC_CLOCK_FREQ, HZ) + static u32 ioc_timer_gettimeoffset(void) { unsigned int count1, count2, status; @@ -46,23 +49,23 @@ static u32 ioc_timer_gettimeoffset(void) * and count2. */ if (status & (1 << 5)) - offset -= LATCH; + offset -= RPC_LATCH; } else if (count2 > count1) { /* * We have just had another interrupt between reading * count1 and count2. */ - offset -= LATCH; + offset -= RPC_LATCH; } - offset = (LATCH - offset) * (tick_nsec / 1000); - return ((offset + LATCH/2) / LATCH) * 1000; + offset = (RPC_LATCH - offset) * (tick_nsec / 1000); + return DIV_ROUND_CLOSEST(offset, RPC_LATCH) * 1000; } void __init ioctime_init(void) { - ioc_writeb(LATCH & 255, IOC_T0LTCHL); - ioc_writeb(LATCH >> 8, IOC_T0LTCHH); + ioc_writeb(RPC_LATCH & 255, IOC_T0LTCHL); + ioc_writeb(RPC_LATCH >> 8, IOC_T0LTCHH); ioc_writeb(0, IOC_T0GO); } |
