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mmc: pwrseq: Add reset callback to the struct mmc_pwrseq_ops

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The ->reset() callback is needed to implement a better support for eMMC HW
reset. The following changes will take advantage of the new callback.

Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
This commit is contained in:
Ulf Hansson 2017-05-08 23:49:12 +02:00
parent dada0194ab
commit 773a9ef85f
2 changed files with 11 additions and 0 deletions
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8
drivers/mmc/core/pwrseq.c
View File

@ -76,6 +76,14 @@ void mmc_pwrseq_power_off(struct mmc_host *host)
pwrseq->ops->power_off(host);
}
void mmc_pwrseq_reset(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
if (pwrseq && pwrseq->ops->reset)
pwrseq->ops->reset(host);
}
void mmc_pwrseq_free(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;

3
drivers/mmc/core/pwrseq.h
View File

@ -18,6 +18,7 @@ struct mmc_pwrseq_ops {
void (*pre_power_on)(struct mmc_host *host);
void (*post_power_on)(struct mmc_host *host);
void (*power_off)(struct mmc_host *host);
void (*reset)(struct mmc_host *host);
};
struct mmc_pwrseq {
@ -36,6 +37,7 @@ int mmc_pwrseq_alloc(struct mmc_host *host);
void mmc_pwrseq_pre_power_on(struct mmc_host *host);
void mmc_pwrseq_post_power_on(struct mmc_host *host);
void mmc_pwrseq_power_off(struct mmc_host *host);
void mmc_pwrseq_reset(struct mmc_host *host);
void mmc_pwrseq_free(struct mmc_host *host);
#else
@ -49,6 +51,7 @@ static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
static inline void mmc_pwrseq_reset(struct mmc_host *host) {}
static inline void mmc_pwrseq_free(struct mmc_host *host) {}
#endif