mmc: export mmc_send_ext_csd()

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

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 3e3656669342b835dde9afdd682c337746292cbc..bfcdaa665dc954bf1b2f36d990ad6a30b4e81afd 100644 (file)
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -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;

diff --git a/include/mmc.h b/include/mmc.h
index 4ecd6c744c51c96f58a241b1d573cfe9312b4d4c..85fc3497a14a42db47d5fd39b36dc974d55f17bd 100644 (file)
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -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;