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mmc: omap: Use DIV_ROUND_UP instead of open coded

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Also uses NSEC_PER_SEC and USEC_PER_SEC instead of hard-coded value.
This makes the intention more clear.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Axel Lin 2014-05-03 09:07:42 +08:00 committed by Chris Ball
parent e6cc0123d9
commit 03a1685340
1 changed files with 5 additions and 5 deletions
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10
drivers/mmc/host/omap.c
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@ -177,7 +177,7 @@ static void mmc_omap_fclk_offdelay(struct mmc_omap_slot *slot)
unsigned long tick_ns;
if (slot != NULL && slot->host->fclk_enabled && slot->fclk_freq > 0) {
tick_ns = (1000000000 + slot->fclk_freq - 1) / slot->fclk_freq;
tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, slot->fclk_freq);
ndelay(8 * tick_ns);
}
}
@ -435,7 +435,7 @@ static void mmc_omap_send_stop_work(struct work_struct *work)
struct mmc_data *data = host->stop_data;
unsigned long tick_ns;
tick_ns = (1000000000 + slot->fclk_freq - 1)/slot->fclk_freq;
tick_ns = DIV_ROUND_UP(NSEC_PER_SEC, slot->fclk_freq);
ndelay(8*tick_ns);
mmc_omap_start_command(host, data->stop);
@ -477,7 +477,7 @@ mmc_omap_send_abort(struct mmc_omap_host *host, int maxloops)
u16 stat = 0;
/* Sending abort takes 80 clocks. Have some extra and round up */
timeout = (120*1000000 + slot->fclk_freq - 1)/slot->fclk_freq;
timeout = DIV_ROUND_UP(120 * USEC_PER_SEC, slot->fclk_freq);
restarts = 0;
while (restarts < maxloops) {
OMAP_MMC_WRITE(host, STAT, 0xFFFF);
@ -677,8 +677,8 @@ mmc_omap_xfer_data(struct mmc_omap_host *host, int write)
if (n > host->buffer_bytes_left)
n = host->buffer_bytes_left;
nwords = n / 2;
nwords += n & 1; /* handle odd number of bytes to transfer */
/* Round up to handle odd number of bytes to transfer */
nwords = DIV_ROUND_UP(n, 2);
host->buffer_bytes_left -= n;
host->total_bytes_left -= n;