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mmc: sdhci: Factor out target_timeout calculation 

Factor out the target_timeout calculation so it can be re-used.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2018-04-27 17:17:16 +05:30 committed by Ulf Hansson
parent a999fd9392
commit 0bb28d738f
1 changed files with 30 additions and 18 deletions
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48
drivers/mmc/host/sdhci.c
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@ -709,6 +709,35 @@ static u32 sdhci_sdma_address(struct sdhci_host *host)
return sg_dma_address(host->data->sg);
}
static unsigned int sdhci_target_timeout(struct sdhci_host *host,
struct mmc_command *cmd,
struct mmc_data *data)
{
unsigned int target_timeout;
/* timeout in us */
if (!data) {
target_timeout = cmd->busy_timeout * 1000;
} else {
target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000);
if (host->clock && data->timeout_clks) {
unsigned long long val;
/*
* data->timeout_clks is in units of clock cycles.
* host->clock is in Hz. target_timeout is in us.
* Hence, us = 1000000 * cycles / Hz. Round up.
*/
val = 1000000ULL * data->timeout_clks;
if (do_div(val, host->clock))
target_timeout++;
target_timeout += val;
}
}
return target_timeout;
}
static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
bool *too_big)
{
@ -732,24 +761,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
return 0xE;
/* timeout in us */
if (!data)
target_timeout = cmd->busy_timeout * 1000;
else {
target_timeout = DIV_ROUND_UP(data->timeout_ns, 1000);
if (host->clock && data->timeout_clks) {
unsigned long long val;
/*
* data->timeout_clks is in units of clock cycles.
* host->clock is in Hz. target_timeout is in us.
* Hence, us = 1000000 * cycles / Hz. Round up.
*/
val = 1000000ULL * data->timeout_clks;
if (do_div(val, host->clock))
target_timeout++;
target_timeout += val;
}
}
target_timeout = sdhci_target_timeout(host, cmd, data);
/*
* Figure out needed cycles.