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>

diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c
index 0368d91..b4f59e1 100644 (file)
--- 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;