dm: blk: Rename get_desc() and make it externally visible

get_desc() can be useful outside blk-uclass.c. Let's change it to
an API and make it externally visible.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index 885513893f6f4003d4c567900ec4273b02a7acac..c9f7d468c59c54535436ac7eb1cd2f470f5810a1 100644 (file)
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -178,17 +178,7 @@ struct blk_desc *blk_get_by_device(struct udevice *dev)
        return NULL;
 }
 
-/**
- * get_desc() - Get the block device descriptor for the given device number
- *
- * @uclass_id: Interface type
- * @devnum:    Device number (0 = first)
- * @descp:     Returns block device descriptor on success
- * Return: 0 on success, -ENODEV if there is no such device and no device
- * with a higher device number, -ENOENT if there is no such device but there
- * is one with a higher number, or other -ve on other error.
- */
-static int get_desc(enum uclass_id uclass_id, int devnum, struct blk_desc **descp)
+int blk_get_desc(enum uclass_id uclass_id, int devnum, struct blk_desc **descp)
 {
        bool found_more = false;
        struct udevice *dev;
@@ -240,7 +230,7 @@ int blk_list_part(enum uclass_id uclass_id)
        int ret;
 
        for (ok = 0, devnum = 0;; ++devnum) {
-               ret = get_desc(uclass_id, devnum, &desc);
+               ret = blk_get_desc(uclass_id, devnum, &desc);
                if (ret == -ENODEV)
                        break;
                else if (ret)
@@ -263,7 +253,7 @@ int blk_print_part_devnum(enum uclass_id uclass_id, int devnum)
        struct blk_desc *desc;
        int ret;
 
-       ret = get_desc(uclass_id, devnum, &desc);
+       ret = blk_get_desc(uclass_id, devnum, &desc);
        if (ret)
                return ret;
        if (desc->type == DEV_TYPE_UNKNOWN)
@@ -280,7 +270,7 @@ void blk_list_devices(enum uclass_id uclass_id)
        int i;
 
        for (i = 0;; ++i) {
-               ret = get_desc(uclass_id, i, &desc);
+               ret = blk_get_desc(uclass_id, i, &desc);
                if (ret == -ENODEV)
                        break;
                else if (ret)
@@ -297,7 +287,7 @@ int blk_print_device_num(enum uclass_id uclass_id, int devnum)
        struct blk_desc *desc;
        int ret;
 
-       ret = get_desc(uclass_id, devnum, &desc);
+       ret = blk_get_desc(uclass_id, devnum, &desc);
        if (ret)
                return ret;
        printf("\nIDE device %d: ", devnum);
@@ -312,7 +302,7 @@ int blk_show_device(enum uclass_id uclass_id, int devnum)
        int ret;
 
        printf("\nDevice %d: ", devnum);
-       ret = get_desc(uclass_id, devnum, &desc);
+       ret = blk_get_desc(uclass_id, devnum, &desc);
        if (ret == -ENODEV || ret == -ENOENT) {
                printf("unknown device\n");
                return -ENODEV;
@@ -334,7 +324,7 @@ ulong blk_read_devnum(enum uclass_id uclass_id, int devnum, lbaint_t start,
        ulong n;
        int ret;
 
-       ret = get_desc(uclass_id, devnum, &desc);
+       ret = blk_get_desc(uclass_id, devnum, &desc);
        if (ret)
                return ret;
        n = blk_dread(desc, start, blkcnt, buffer);
@@ -350,7 +340,7 @@ ulong blk_write_devnum(enum uclass_id uclass_id, int devnum, lbaint_t start,
        struct blk_desc *desc;
        int ret;
 
-       ret = get_desc(uclass_id, devnum, &desc);
+       ret = blk_get_desc(uclass_id, devnum, &desc);
        if (ret)
                return ret;
        return blk_dwrite(desc, start, blkcnt, buffer);

diff --git a/include/blk.h b/include/blk.h
index bbff057aed4eca7ebb3f951965cd868d07237679..b453b5a60266e8c2aa8cbaa8354b5ca2996a2ca6 100644 (file)
--- a/include/blk.h
+++ b/include/blk.h
@@ -515,6 +515,18 @@ const char *blk_get_devtype(struct udevice *dev);
  */
 struct blk_desc *blk_get_by_device(struct udevice *dev);
 
+/**
+ * blk_get_desc() - Get the block device descriptor for the given device number
+ *
+ * @uclass_id: Interface type
+ * @devnum:    Device number (0 = first)
+ * @descp:     Returns block device descriptor on success
+ * Return: 0 on success, -ENODEV if there is no such device and no device
+ * with a higher device number, -ENOENT if there is no such device but there
+ * is one with a higher number, or other -ve on other error.
+ */
+int blk_get_desc(enum uclass_id uclass_id, int devnum, struct blk_desc **descp);
+
 #else
 #include <errno.h>
 /*