1 files changed, 62 insertions, 0 deletions
diff --git a/ubi-utils/include/libmtd.h b/ubi-utils/include/libmtd.h
index 032dafb..c50059d 100644
--- a/ubi-utils/include/libmtd.h
+++ b/ubi-utils/include/libmtd.h
@@ -60,11 +60,73 @@ struct mtd_info
 	int fd;
 };
 
+/**
+ * mtd_get_info - get information about an MTD device.
+ * @node: name of the MTD device node
+ * @mtd: the MTD device information is returned here
+ *
+ * This function gets information about MTD device defined by the @node device
+ * node file and saves this information in the @mtd object. Returns %0 in case
+ * of success and %-1 in case of failure.
+ */
 int mtd_get_info(const char *node, struct mtd_info *mtd);
+
+/**
+ * mtd_erase - erase an eraseblock.
+ * @mtd: MTD device description object
+ * @eb: eraseblock to erase
+ *
+ * This function erases the eraseblock and returns %0 in case of success and
+ * %-1 in case of failure.
+ */
 int mtd_erase(const struct mtd_info *mtd, int eb);
+
+/**
+ * mtd_is_bad - check if eraseblock is bad.
+ * @mtd: MTD device description object
+ * @eb: eraseblock to check
+ *
+ * This function checks if eraseblock @eb is bad. Returns %0 if not, %1 if yes,
+ * and %-1 in case of failure.
+ */
 int mtd_is_bad(const struct mtd_info *mtd, int eb);
+
+/**
+ * mtd_mark_bad - marks the block as bad.
+ * @mtd: MTD device description object
+ * @eb: eraseblock to mark bad
+ *
+ * This function marks the eraseblock @eb as bad. Returns %0 if success
+ * %-1 if failure
+ */
 int mtd_mark_bad(const struct mtd_info *mtd, int eb);
+
+/**
+ * mtd_read - read data from an MTD device.
+ * @mtd: MTD device description object
+ * @eb: eraseblock to read from
+ * @offs: offset withing the eraseblock to read from
+ * @buf: buffer to read data to
+ * @len: how many bytes to read
+ *
+ * This function reads @len bytes of data from eraseblock @eb and offset @offs
+ * of the MTD device defined by @mtd and stores the read data at buffer @buf.
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
 int mtd_read(const struct mtd_info *mtd, int eb, int offs, void *buf, int len);
+
+/**
+ * mtd_write - write data to an MTD device.
+ * @mtd: MTD device description object
+ * @eb: eraseblock to write to
+ * @offs: offset withing the eraseblock to write to
+ * @buf: buffer to write
+ * @len: how many bytes to write
+ *
+ * This function writes @len bytes of data to eraseblock @eb and offset @offs
+ * of the MTD device defined by @mtd. Returns %0 in case of success and %-1 in
+ * case of failure.
+ */
 int mtd_write(const struct mtd_info *mtd, int eb, int offs, void *buf, int len);
 
 #ifdef __cplusplus