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 27bce457d5
("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>
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@ -1179,9 +1179,7 @@ static int img_i2c_init(struct img_i2c *i2c)
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int_bitrate++;
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int_bitrate++;
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/* Setup TCKH value */
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/* Setup TCKH value */
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tckh = timing.tckh / clk_period;
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tckh = DIV_ROUND_UP(timing.tckh, clk_period);
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if (timing.tckh % clk_period)
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tckh++;
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if (tckh > 0)
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if (tckh > 0)
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data = tckh - 1;
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data = tckh - 1;
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@ -1201,9 +1199,7 @@ static int img_i2c_init(struct img_i2c *i2c)
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img_i2c_writel(i2c, SCB_TIME_TCKL_REG, data);
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img_i2c_writel(i2c, SCB_TIME_TCKL_REG, data);
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/* Setup TSDH value */
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/* Setup TSDH value */
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tsdh = timing.tsdh / clk_period;
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tsdh = DIV_ROUND_UP(timing.tsdh, clk_period);
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if (timing.tsdh % clk_period)
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tsdh++;
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if (tsdh > 1)
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if (tsdh > 1)
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data = tsdh - 1;
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data = tsdh - 1;
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