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gpu: ipu-di: Switch to DIV_ROUND_CLOSEST for DI clock divider calc 

We can use the DIV_ROUND_CLOSEST() macro when calculating the DI
clock divider, rounded to nearest int.

Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Steve Longerbeam 2014-12-18 18:00:26 -08:00 committed by Philipp Zabel
parent b6835a719a
commit 503f1631ae
1 changed files with 3 additions and 6 deletions
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9
drivers/gpu/ipu-v3/ipu-di.c
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@ -440,8 +440,7 @@ static void ipu_di_config_clock(struct ipu_di *di,
clk_set_rate(clk, sig->mode.pixelclock);
in_rate = clk_get_rate(clk);
div = (in_rate + sig->mode.pixelclock / 2) /
sig->mode.pixelclock;
div = DIV_ROUND_CLOSEST(in_rate, sig->mode.pixelclock);
if (div == 0)
div = 1;
@ -459,8 +458,7 @@ static void ipu_di_config_clock(struct ipu_di *di,
unsigned div, error;
clkrate = clk_get_rate(di->clk_ipu);
div = (clkrate + sig->mode.pixelclock / 2) /
sig->mode.pixelclock;
div = DIV_ROUND_CLOSEST(clkrate, sig->mode.pixelclock);
rate = clkrate / div;
error = rate / (sig->mode.pixelclock / 1000);
@ -482,8 +480,7 @@ static void ipu_di_config_clock(struct ipu_di *di,
clk_set_rate(clk, sig->mode.pixelclock);
in_rate = clk_get_rate(clk);
div = (in_rate + sig->mode.pixelclock / 2) /
sig->mode.pixelclock;
div = DIV_ROUND_CLOSEST(in_rate, sig->mode.pixelclock);
if (div == 0)
div = 1;