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mmc: Poll for broken card detection case

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Poll for broken card detection case instead of return
no card detected.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
This commit is contained in:
Jun Nie 2018-01-02 12:25:57 +08:00 • committed by Jaehoon Chung
parent c0fafe64a5
commit 2f516e4aa2
2 changed files with 9 additions and 0 deletions
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5
drivers/mmc/Kconfig
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@ -17,6 +17,11 @@ config MMC_WRITE
help
Enable write access to MMC and SD Cards
config MMC_BROKEN_CD
bool "Poll for broken card detection case"
help
If card detection feature is broken, just poll to detect.
config DM_MMC
bool "Enable MMC controllers using Driver Model"
depends on DM

4
drivers/mmc/mmc.c
View file

@ -2493,8 +2493,12 @@ int mmc_start_init(struct mmc *mmc)
mmc->host_caps = mmc->cfg->host_caps | MMC_CAP(SD_LEGACY) |
MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT;
#if !defined(CONFIG_MMC_BROKEN_CD)
/* we pretend there's no card when init is NULL */
no_card = mmc_getcd(mmc) == 0;
#else
no_card = 0;
#endif
#if !CONFIG_IS_ENABLED(DM_MMC)
no_card = no_card || (mmc->cfg->ops->init == NULL);
#endif