mmc: pwrseq: Add reset callback to the struct mmc_pwrseq_ops

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>

diff --git a/drivers/mmc/core/pwrseq.c b/drivers/mmc/core/pwrseq.c
index 9386c47..e3ad30f 100644 (file)
--- a/drivers/mmc/core/pwrseq.c
+++ b/drivers/mmc/core/pwrseq.c
@@ -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;

diff --git a/drivers/mmc/core/pwrseq.h b/drivers/mmc/core/pwrseq.h
index 39c911a..819386f 100644 (file)
--- a/drivers/mmc/core/pwrseq.h
+++ b/drivers/mmc/core/pwrseq.h
@@ -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