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| author |   Steve Longerbeam <slongerbeam@gmail.com> | 2014-12-18 18:00:26 -0800 |
|---|---|---|
| committer |   Philipp Zabel <p.zabel@pengutronix.de> | 2015-01-07 19:15:04 +0100 |
| commit | 503f1631ae8f42a386193c92cc4488d35978352e (patch) | |
| tree | f90982a4e002c56599a7693270d6f035991297dc /drivers/gpu/ipu-v3/ipu-di.c | |
| parent | gpu: ipu-v3: Use videomode in struct ipu_di_signal_cfg (diff) | |
| download | linux-dev-503f1631ae8f42a386193c92cc4488d35978352e.tar.xz linux-dev-503f1631ae8f42a386193c92cc4488d35978352e.zip | |
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>
Diffstat (limited to 'drivers/gpu/ipu-v3/ipu-di.c')
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-di.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-di.c b/drivers/gpu/ipu-v3/ipu-di.c index d95fbd0f6952..b61d6be97602 100644 --- a/drivers/gpu/ipu-v3/ipu-di.c +++ b/drivers/gpu/ipu-v3/ipu-di.c @@ -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; |