Instead of rounding the divider down, improve the baud-rate generators
accuracy by rounding to the nearest integer.
Signed-off-by: Laurent Pinchart <[EMAIL PROTECTED]>
---
arch/powerpc/sysdev/cpm2.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/sysdev/cpm2.c b/arch/powerpc/sysdev/cpm2.c
index f1c3395..474d176 100644
--- a/arch/powerpc/sysdev/cpm2.c
+++ b/arch/powerpc/sysdev/cpm2.c
@@ -129,7 +129,8 @@ void __cpm2_setbrg(uint brg, uint rate, uint clk, int
div16, int src)
brg -= 4;
}
bp += brg;
- val = (((clk / rate) - 1) << 1) | CPM_BRG_EN | src;
+ /* Round the clock divider to the nearest integer. */
+ val = (((clk * 2 / rate) - 1) & ~1) | CPM_BRG_EN | src;
if (div16)
val |= CPM_BRG_DIV16;
--
1.5.6.3
--
Laurent Pinchart
CSE Semaphore Belgium
Chaussee de Bruxelles, 732A
B-1410 Waterloo
Belgium
T +32 (2) 387 42 59
F +32 (2) 387 42 75
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