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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-01-14 22:37:12 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-05-02 09:35:34 +0100 |
| commit | fe8e1a57f0ccdaede41618ca9ced7d746b6298d3 (patch) | |
| tree | c1056096717f28e5c8c8d59395ca0efff61ca539 | |
| parent | e388771458b4ff3ad81ab70e390b24d069647da4 (diff) | |
| download | blackbird-op-linux-fe8e1a57f0ccdaede41618ca9ced7d746b6298d3.tar.gz blackbird-op-linux-fe8e1a57f0ccdaede41618ca9ced7d746b6298d3.zip | |
ARM: Realview/Versatile: remove useless TIMER_RELOAD calculations
Realview/Versatile copied the Integrator timer code, including the
calculations for ensuring that the reload value fits into the 16-bit
counter. However, these platforms have a 32-bit counter which is
clocked at a slower rate.
The result is that the preprocessor conditions are never triggered:
TICKS_PER_uSEC = 1, mSEC_10 = 10000, which is 0x2710 - less than
0x10000.
So, remove the unnecessary complexity, reducing the TIMER_RELOAD
calculation to just:
TICKS_PER_uSEC * mSEC_10
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/plat-versatile/timer-sp.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/arm/plat-versatile/timer-sp.c b/arch/arm/plat-versatile/timer-sp.c index 98722f44640c..d1dbef5b17b1 100644 --- a/arch/arm/plat-versatile/timer-sp.c +++ b/arch/arm/plat-versatile/timer-sp.c @@ -33,17 +33,7 @@ /* * How long is the timer interval? */ -#define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_10) -#if TIMER_INTERVAL >= 0x100000 -#define TIMER_RELOAD (TIMER_INTERVAL >> 8) -#define TIMER_DIVISOR (TIMER_CTRL_DIV256) -#elif TIMER_INTERVAL >= 0x10000 -#define TIMER_RELOAD (TIMER_INTERVAL >> 4) /* Divide by 16 */ -#define TIMER_DIVISOR (TIMER_CTRL_DIV16) -#else -#define TIMER_RELOAD (TIMER_INTERVAL) -#define TIMER_DIVISOR (TIMER_CTRL_DIV1) -#endif +#define TIMER_RELOAD (TICKS_PER_uSEC * mSEC_10) static void __iomem *clksrc_base; |
