dm: mmc: Add a legacy block interface for MMC

Add a legacy block interface for MMC.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index d3c22abfd5a8c198499308cb4b8e24f161f9be3d..024368c72747333aeee256cd2c736222c7322d98 100644 (file)
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1582,14 +1582,31 @@ void mmc_destroy(struct mmc *mmc)
        free(mmc);
 }
 
+static int mmc_get_devp(int dev, struct blk_desc **descp)
+{
+       struct mmc *mmc = find_mmc_device(dev);
+       int ret;
+
+       if (!mmc)
+               return -ENODEV;
+       ret = mmc_init(mmc);
+       if (ret)
+               return ret;
+
+       *descp = &mmc->block_dev;
+
+       return 0;
+}
+
 #ifdef CONFIG_PARTITIONS
 struct blk_desc *mmc_get_dev(int dev)
 {
-       struct mmc *mmc = find_mmc_device(dev);
-       if (!mmc || mmc_init(mmc))
+       struct blk_desc *desc;
+
+       if (mmc_get_devp(dev, &desc))
                return NULL;
 
-       return &mmc->block_dev;
+       return desc;
 }
 #endif
 
@@ -1965,3 +1982,10 @@ int mmc_set_rst_n_function(struct mmc *mmc, u8 enable)
                          enable);
 }
 #endif
+
+U_BOOT_LEGACY_BLK(mmc) = {
+       .if_typename    = "mmc",
+       .if_type        = IF_TYPE_MMC,
+       .max_devs       = -1,
+       .get_dev        = mmc_get_devp,
+};