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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2023-09-06 22:00:22 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2023-09-19 11:11:02 +0200 |
| commit | 3c417c947c13f22e60a4c3e68a7219a134219925 (patch) | |
| tree | 5f8996e45720f6381a88fe9f79ae376536261cd5 /drivers/i2c/busses | |
| parent | 47280af872367ead8202b8503083b0b4016b667b (diff) | |
| download | linux-3c417c947c13f22e60a4c3e68a7219a134219925.tar.gz | |
i2c: rcar: remove open coded DIV_ROUND_CLOSEST
It improves readability if we use the available helper.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-rcar.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 2585092bed52e1..5e97635faf785d 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -291,16 +291,15 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv) ick = rate / (cdf + 1); /* - * it is impossible to calculate large scale - * number on u32. separate it + * It is impossible to calculate a large scale number on u32. Separate it. * * F[(ticf + tr + intd) * ick] with sum = (ticf + tr + intd) * = F[sum * ick / 1000000000] * = F[(ick / 1000000) * sum / 1000] */ sum = t.scl_fall_ns + t.scl_rise_ns + t.scl_int_delay_ns; - round = (ick + 500000) / 1000000 * sum; - round = (round + 500) / 1000; + round = DIV_ROUND_CLOSEST(ick, 1000000); + round = DIV_ROUND_CLOSEST(round * sum, 1000); /* * SCL = ick / (20 + 8 * SCGD + F[(ticf + tr + intd) * ick]) |