dm: mmc: Implement the select_hwpart() method
Implement this method so that hardware partitions will work correctly with
MMC.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 2211ac6..e270f5f 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -606,6 +606,27 @@
return ret;
}
+static int mmc_select_hwpartp(struct blk_desc *desc, int hwpart)
+{
+ struct mmc *mmc = find_mmc_device(desc->devnum);
+ int ret;
+
+ if (!mmc)
+ return -ENODEV;
+
+ if (mmc->block_dev.hwpart == hwpart)
+ return 0;
+
+ if (mmc->part_config == MMCPART_NOAVAILABLE)
+ return -EMEDIUMTYPE;
+
+ ret = mmc_switch_part(desc->devnum, hwpart);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
int mmc_select_hwpart(int dev_num, int hwpart)
{
struct mmc *mmc = find_mmc_device(dev_num);
@@ -1973,4 +1994,5 @@
.if_type = IF_TYPE_MMC,
.max_devs = -1,
.get_dev = mmc_get_dev,
+ .select_hwpart = mmc_select_hwpartp,
};