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mmc: export mmc_send_ext_csd()

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Export function mmc_send_ext_csd() for reading the extended CSD register.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-03-30 07:24:17 +02:00 committed by Peng Fan
parent 9abfe33d10
commit 1601ea2126
2 changed files with 12 additions and 1 deletions
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2
drivers/mmc/mmc.c
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@ -718,7 +718,7 @@ static int mmc_complete_op_cond(struct mmc *mmc)
}
static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
{
struct mmc_cmd cmd;
struct mmc_data data;

11
include/mmc.h
View file

@ -896,6 +896,17 @@ int mmc_get_env_dev(void);
*/
struct blk_desc *mmc_get_blk_desc(struct mmc *mmc);
/**
* mmc_send_ext_csd() - read the extended CSD register
*
* @mmc: MMC device
* @ext_csd a cache aligned buffer of length MMC_MAX_BLOCK_LEN allocated by
* the caller, e.g. using
* ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN)
* Return: 0 for success
*/
int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd);
static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
{
return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;