[1/2] mmc: pwrseq: Add reset callback to the struct mmc_pwrseq_ops

Message ID 1494281343-18963-2-git-send-email-ulf.hansson@linaro.org
State New
Headers show
Series
  • mmc: core: Fix the behaviour of pwrseq_emmc
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Commit Message

Ulf Hansson May 8, 2017, 10:09 p.m.
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>

---
 drivers/mmc/core/pwrseq.c | 8 ++++++++
 drivers/mmc/core/pwrseq.h | 3 +++
 2 files changed, 11 insertions(+)

-- 
2.7.4

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diff --git a/drivers/mmc/core/pwrseq.c b/drivers/mmc/core/pwrseq.c
index 9386c47..e3ad30f 100644
--- 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
--- 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