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mmc: tmio: more concise clk calculation 

Concise, but still readable.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2018-08-30 14:14:38 +02:00 committed by Ulf Hansson
parent b85fb0a1c8
commit 4c595c057a
1 changed files with 3 additions and 8 deletions
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11
drivers/mmc/host/tmio_mmc.c
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@ -56,14 +56,9 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host,
divisor = host->pdata->hclk / new_clock;
if (divisor <= 1) {
clk_sel = 1;
clk = 0;
} else {
clk_sel = 0;
/* bit7 set: 1/512, ... bit0 set:1/4, all bits clear: 1/2 */
clk = roundup_pow_of_two(divisor) >> 2;
}
/* bit7 set: 1/512, ... bit0 set: 1/4, all bits clear: 1/2 */
clk_sel = (divisor <= 1);
clk = clk_sel ? 0 : (roundup_pow_of_two(divisor) >> 2);
host->pdata->set_clk_div(host->pdev, clk_sel);