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| author | Sifan Naeem <sifan.naeem@imgtec.com> | 2015-09-10 15:50:03 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-10-10 08:38:31 +0100 |
| commit | 5728d95f2458887ae3d95547c04352bba5080ad6 (patch) | |
| tree | a21c9ae19572490838ed3928145abc70daa8b799 /drivers/i2c/busses | |
| parent | 2aefb1bd4101235be7d9f0d5ac8d56aa979f6081 (diff) | |
| download | blackbird-op-linux-5728d95f2458887ae3d95547c04352bba5080ad6.tar.gz blackbird-op-linux-5728d95f2458887ae3d95547c04352bba5080ad6.zip | |
i2c: img-scb: use DIV_ROUND_UP to round divisor values
Using % can be slow depending on the architecture.
Using DIV_ROUND_UP is nicer and more efficient way to do it.
Fixes: commit 27bce457d588 ("i2c: img-scb: Add Imagination Technologies I2C SCB driver")
Signed-off-by: Sifan Naeem <sifan.naeem@imgtec.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: James Hartley <james.hartley@imgtec.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-img-scb.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c index 0368d91b6805..b4f59e1a5cac 100644 --- a/drivers/i2c/busses/i2c-img-scb.c +++ b/drivers/i2c/busses/i2c-img-scb.c @@ -1179,9 +1179,7 @@ static int img_i2c_init(struct img_i2c *i2c) int_bitrate++; /* Setup TCKH value */ - tckh = timing.tckh / clk_period; - if (timing.tckh % clk_period) - tckh++; + tckh = DIV_ROUND_UP(timing.tckh, clk_period); if (tckh > 0) data = tckh - 1; @@ -1201,9 +1199,7 @@ static int img_i2c_init(struct img_i2c *i2c) img_i2c_writel(i2c, SCB_TIME_TCKL_REG, data); /* Setup TSDH value */ - tsdh = timing.tsdh / clk_period; - if (timing.tsdh % clk_period) - tsdh++; + tsdh = DIV_ROUND_UP(timing.tsdh, clk_period); if (tsdh > 1) data = tsdh - 1; |
