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authorSifan Naeem <sifan.naeem@imgtec.com>2015-09-10 15:50:03 +0100
committerWolfram Sang <wsa@the-dreams.de>2015-10-10 08:38:31 +0100
commit5728d95f2458887ae3d95547c04352bba5080ad6 (patch)
treea21c9ae19572490838ed3928145abc70daa8b799 /drivers/i2c
parent2aefb1bd4101235be7d9f0d5ac8d56aa979f6081 (diff)
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')
-rw-r--r--drivers/i2c/busses/i2c-img-scb.c8
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;