diff options
| author | Yangbo Lu <yangbo.lu@nxp.com> | 2020-09-01 16:57:59 +0800 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2020-10-12 15:45:39 +0800 |
| commit | 390f9bddb9c84f75649024b41b8cf2a766379ce0 (patch) | |
| tree | 53bf31a4cf9cbcb2cc76f8a444d699311dce3563 | |
| parent | 726561a9412abe50875b7791feab94f411d76199 (diff) | |
mmc: add a reinit() API
For DM_MMC, the controller re-initialization is needed to
clear old configuration for mmc rescan.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
| -rw-r--r-- | drivers/mmc/mmc-uclass.c | 15 | ||||
| -rw-r--r-- | drivers/mmc/mmc.c | 8 | ||||
| -rw-r--r-- | include/mmc.h | 10 |
3 files changed, 31 insertions, 2 deletions
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 90690c8d1e3..b90e1ee30d1 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -171,6 +171,21 @@ int mmc_deferred_probe(struct mmc *mmc) return dm_mmc_deferred_probe(mmc->dev); } +int dm_mmc_reinit(struct udevice *dev) +{ + struct dm_mmc_ops *ops = mmc_get_ops(dev); + + if (ops->reinit) + return ops->reinit(dev); + + return 0; +} + +int mmc_reinit(struct mmc *mmc) +{ + return dm_mmc_reinit(mmc->dev); +} + int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg) { int val; diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index d79cdef62ed..07275053046 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -2816,13 +2816,17 @@ int mmc_get_op_cond(struct mmc *mmc) return err; #if CONFIG_IS_ENABLED(DM_MMC) - /* The device has already been probed ready for use */ + /* + * Re-initialization is needed to clear old configuration for + * mmc rescan. + */ + err = mmc_reinit(mmc); #else /* made sure it's not NULL earlier */ err = mmc->cfg->ops->init(mmc); +#endif if (err) return err; -#endif mmc->ddr_mode = 0; retry: diff --git a/include/mmc.h b/include/mmc.h index 75bcaaf6b35..93494d939a1 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -422,6 +422,14 @@ struct dm_mmc_ops { */ int (*deferred_probe)(struct udevice *dev); /** + * reinit() - Re-initialization to clear old configuration for + * mmc rescan. + * + * @dev: Device to reinit + * @return 0 if Ok, -ve if error + */ + int (*reinit)(struct udevice *dev); + /** * send_cmd() - Send a command to the MMC device * * @dev: Device to receive the command @@ -518,6 +526,7 @@ int dm_mmc_execute_tuning(struct udevice *dev, uint opcode); int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout_us); int dm_mmc_host_power_cycle(struct udevice *dev); int dm_mmc_deferred_probe(struct udevice *dev); +int dm_mmc_reinit(struct udevice *dev); int dm_mmc_get_b_max(struct udevice *dev, void *dst, lbaint_t blkcnt); /* Transition functions for compatibility */ @@ -529,6 +538,7 @@ int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us); int mmc_set_enhanced_strobe(struct mmc *mmc); int mmc_host_power_cycle(struct mmc *mmc); int mmc_deferred_probe(struct mmc *mmc); +int mmc_reinit(struct mmc *mmc); int mmc_get_b_max(struct mmc *mmc, void *dst, lbaint_t blkcnt); #else |