[U-Boot] [PATCH 17/22] mmc: Add a execute_tuning() callback to the mmc operations.

[Jean-Jacques Hiblot]

Tuning is a mandatory step in the initialization of SDR104 and HS200 modes.
This callback execute the tuning process.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
---
 drivers/mmc/mmc-uclass.c | 14 ++++++++++++++
 drivers/mmc/mmc.c        |  5 +++++
 include/mmc.h            | 12 ++++++++++++
 3 files changed, 31 insertions(+)

diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c
index e1f7995..b7433cf 100644
--- a/drivers/mmc/mmc-uclass.c
+++ b/drivers/mmc/mmc-uclass.c
@@ -93,6 +93,20 @@ int mmc_getcd(struct mmc *mmc)
 {
 	return dm_mmc_get_cd(mmc->dev);
 }
+
+int dm_mmc_execute_tuning(struct udevice *dev, uint opcode)
+{
+	struct dm_mmc_ops *ops = mmc_get_ops(dev);
+
+	if (!ops->execute_tuning)
+		return -ENOSYS;
+	return ops->execute_tuning(dev, opcode);
+}
+
+int mmc_execute_tuning(struct mmc *mmc, uint opcode)
+{
+	return dm_mmc_execute_tuning(mmc->dev, opcode);
+}
 #endif
 
 struct mmc *mmc_get_mmc_dev(struct udevice *dev)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 415484e..d7d1c91 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -219,6 +219,11 @@ int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
 
 	return ret;
 }
+
+int mmc_execute_tuning(struct mmc *mmc, uint opcode)
+{
+	return mmc->cfg->ops->execute_tuning(mmc, opcode);
+}
 #endif
 
 int mmc_send_status(struct mmc *mmc, int timeout)
diff --git a/include/mmc.h b/include/mmc.h
index 097a685..dab68c5 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -375,6 +375,15 @@ struct dm_mmc_ops {
 	 * @return 0 if write-enabled, 1 if write-protected, -ve on error
 	 */
 	int (*get_wp)(struct udevice *dev);
+
+	/**
+	 * execute_tuning() - Start the tuning process
+	 *
+	 * @dev:	Device to start the tuning
+	 * @opcode:	Command opcode to send
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*execute_tuning)(struct udevice *dev, uint opcode);
 };
 
 #define mmc_get_ops(dev)        ((struct dm_mmc_ops *)(dev)->driver->ops)
@@ -385,12 +394,14 @@ int dm_mmc_set_ios(struct udevice *dev);
 int dm_mmc_set_vdd(struct udevice *dev, bool enable);
 int dm_mmc_get_cd(struct udevice *dev);
 int dm_mmc_get_wp(struct udevice *dev);
+int dm_mmc_execute_tuning(struct udevice *dev, uint opcode);
 
 /* Transition functions for compatibility */
 int mmc_set_ios(struct mmc *mmc);
 int mmc_set_vdd(struct mmc *mmc, bool enable);
 int mmc_getcd(struct mmc *mmc);
 int mmc_getwp(struct mmc *mmc);
+int mmc_execute_tuning(struct mmc *mmc, uint opcode);
 
 #else
 struct mmc_ops {
@@ -401,6 +412,7 @@ struct mmc_ops {
 	int (*set_vdd)(struct mmc *mmc, bool enable);
 	int (*getcd)(struct mmc *mmc);
 	int (*getwp)(struct mmc *mmc);
+	int (*execute_tuning)(struct mmc *mmc, uint opcode);
 };
 #endif
 
-- 
1.9.1