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mmc: core: Add sd discard timeout 

The busy timeout is 250msec per discard command.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
hifive-unleashed-5.1
Avri Altman 2019-02-26 17:10:25 +02:00 committed by Ulf Hansson
parent bc47e2f6f9
commit ad9be7fff3
1 changed files with 7 additions and 0 deletions
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7
drivers/mmc/core/core.c
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@ -51,6 +51,7 @@
/* The max erase timeout, used when host->max_busy_timeout isn't specified */
#define MMC_ERASE_TIMEOUT_MS (60 * 1000) /* 60 s */
#define SD_DISCARD_TIMEOUT_MS (250)
static const unsigned freqs[] = { 400000, 300000, 200000, 100000 };
@ -1619,6 +1620,12 @@ static unsigned int mmc_sd_erase_timeout(struct mmc_card *card,
{
unsigned int erase_timeout;
/* for DISCARD none of the below calculation applies.
* the busy timeout is 250msec per discard command.
*/
if (arg == SD_DISCARD_ARG)
return SD_DISCARD_TIMEOUT_MS;
if (card->ssr.erase_timeout) {
/* Erase timeout specified in SD Status Register (SSR) */
erase_timeout = card->ssr.erase_timeout * qty +