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mmc: core: Add card_busy to host_ops 

This host_ops member is used to test if the card is signaling busy by
pulling dat[0:3] low.

Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Johan Rudholm 2013-01-28 15:08:26 +01:00 committed by Chris Ball
parent 276e090f92
commit d887874e0e
1 changed files with 3 additions and 0 deletions
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3
include/linux/mmc/host.h
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@ -131,6 +131,9 @@ struct mmc_host_ops {
int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
/* Check if the card is pulling dat[0:3] low */
int (*card_busy)(struct mmc_host *host);
/* The tuning command opcode value is different for SD and eMMC cards */
int (*execute_tuning)(struct mmc_host *host, u32 opcode);
void (*enable_preset_value)(struct mmc_host *host, bool enable);