Commit 9d64834b authored by Zheng Yongjun's avatar Zheng Yongjun Committed by Wolfram Sang
Browse files

i2c: use DIV_ROUND_UP macro to do calculation 



Don't open-code DIV_ROUND_UP() kernel macro.

Signed-off-by: default avatarZheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: default avatarFabio Estevam <festevam@gmail.com>
Acked-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 2478b9c1

drivers/i2c/busses/i2c-imx.c

+3 −3
Original line number Diff line number Diff line
@@ -537,7 +537,7 @@ static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx, 


	i2c_imx->cur_clk = i2c_clk_rate;



	div = (i2c_clk_rate + i2c_imx->bitrate - 1) / i2c_imx->bitrate;

	div = DIV_ROUND_UP(i2c_clk_rate, i2c_imx->bitrate);

	if (div < i2c_clk_div[0].div)

		i = 0;

	else if (div > i2c_clk_div[i2c_imx->hwdata->ndivs - 1].div)
@@ -555,8 +555,8 @@ static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx, 
	 * This delay is used in I2C bus disable function

	 * to fix chip hardware bug.

	 */

	i2c_imx->disable_delay = (500000U * i2c_clk_div[i].div

		+ (i2c_clk_rate / 2) - 1) / (i2c_clk_rate / 2);

	i2c_imx->disable_delay = DIV_ROUND_UP(500000U * i2c_clk_div[i].div,

					      i2c_clk_rate / 2);



#ifdef CONFIG_I2C_DEBUG_BUS

	dev_dbg(&i2c_imx->adapter.dev, "I2C_CLK=%d, REQ DIV=%d\n",