From 53985371458fc17405c7fc277e6f05fe36965eab Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 19 Dec 2013 22:22:23 +0100 Subject: ARM: rpc: stop using MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The rpc timekeeping code uses the symbol LATCH which depends on CLOCK_TICK_RATE which is defined in rpc's . 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 --- arch/arm/mach-rpc/time.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-rpc/time.c b/arch/arm/mach-rpc/time.c index 9a6def14df01..99363ae5cac7 100644 --- a/arch/arm/mach-rpc/time.c +++ b/arch/arm/mach-rpc/time.c @@ -24,6 +24,9 @@ #include +#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); } -- cgit v1.2.3