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mmc: Add a execute_tuning() callback to the mmc operations.

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

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
This commit is contained in:
Kishon Vijay Abraham I 2017-09-21 16:30:05 +02:00 • committed by Jaehoon Chung
parent 2e7410d76a
commit ec841209a7
3 changed files with 30 additions and 0 deletions
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14
drivers/mmc/mmc-uclass.c
View file

@ -92,6 +92,20 @@ int mmc_getcd(struct mmc *mmc)
return dm_mmc_get_cd(mmc->dev); 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);
}
struct mmc *mmc_get_mmc_dev(struct udevice *dev) struct mmc *mmc_get_mmc_dev(struct udevice *dev)
{ {
struct mmc_uclass_priv *upriv; struct mmc_uclass_priv *upriv;

5
drivers/mmc/mmc.c
View file

@ -1199,6 +1199,11 @@ static inline int bus_width(uint cap)
} }
#if !CONFIG_IS_ENABLED(DM_MMC) #if !CONFIG_IS_ENABLED(DM_MMC)
static int mmc_execute_tuning(struct mmc *mmc, uint opcode)
{
return -ENOTSUPP;
}
static void mmc_send_init_stream(struct mmc *mmc) static void mmc_send_init_stream(struct mmc *mmc)
{ {
} }

11
include/mmc.h
View file

@ -383,6 +383,15 @@ struct dm_mmc_ops {
* @return 0 if write-enabled, 1 if write-protected, -ve on error * @return 0 if write-enabled, 1 if write-protected, -ve on error
*/ */
int (*get_wp)(struct udevice *dev); 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) #define mmc_get_ops(dev) ((struct dm_mmc_ops *)(dev)->driver->ops)
@ -393,12 +402,14 @@ int dm_mmc_set_ios(struct udevice *dev);
void dm_mmc_send_init_stream(struct udevice *dev); void dm_mmc_send_init_stream(struct udevice *dev);
int dm_mmc_get_cd(struct udevice *dev); int dm_mmc_get_cd(struct udevice *dev);
int dm_mmc_get_wp(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 */ /* Transition functions for compatibility */
int mmc_set_ios(struct mmc *mmc); int mmc_set_ios(struct mmc *mmc);
void mmc_send_init_stream(struct mmc *mmc); void mmc_send_init_stream(struct mmc *mmc);
int mmc_getcd(struct mmc *mmc); int mmc_getcd(struct mmc *mmc);
int mmc_getwp(struct mmc *mmc); int mmc_getwp(struct mmc *mmc);
int mmc_execute_tuning(struct mmc *mmc, uint opcode);
#else #else
struct mmc_ops { struct mmc_ops {