This commit extends the uclass-internal functions by:
- uclass_find_first_device()
- uclass_find_next_device()
For both functions, the returned device is not probed.
After some cleanup, the above functions are called by:
- uclass_first_device()
- uclass_next_device()
for which, the returned device is probed.
Signed-off-by: Przemyslaw Marczak
Cc: Simon Glass
---
Changes V2:
- new commit
Changes V3:
- none
---
drivers/core/uclass.c| 59 +---
include/dm/uclass-internal.h | 22 +
2 files changed, 56 insertions(+), 25 deletions(-)
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 98c15e5..21ab0d5 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -156,6 +156,36 @@ int uclass_find_device(enum uclass_id id, int index,
struct udevice **devp)
return -ENODEV;
}
+int uclass_find_first_device(enum uclass_id id, struct udevice **devp)
+{
+ struct uclass *uc;
+ int ret;
+
+ *devp = NULL;
+ ret = uclass_get(id, &uc);
+ if (ret)
+ return ret;
+ if (list_empty(&uc->dev_head))
+ return 0;
+
+ *devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node);
+
+ return 0;
+}
+
+int uclass_find_next_device(struct udevice **devp)
+{
+ struct udevice *dev = *devp;
+
+ *devp = NULL;
+ if (list_is_last(&dev->uclass_node, &dev->uclass->dev_head))
+ return 0;
+
+ *devp = list_entry(dev->uclass_node.next, struct udevice, uclass_node);
+
+ return 0;
+}
+
int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
bool find_req_seq, struct udevice **devp)
{
@@ -274,24 +304,12 @@ int uclass_get_device_by_of_offset(enum uclass_id id, int
node,
int uclass_first_device(enum uclass_id id, struct udevice **devp)
{
- struct uclass *uc;
struct udevice *dev;
int ret;
*devp = NULL;
- ret = uclass_get(id, &uc);
- if (ret)
- return ret;
- if (list_empty(&uc->dev_head))
- return 0;
-
- dev = list_first_entry(&uc->dev_head, struct udevice, uclass_node);
- ret = device_probe(dev);
- if (ret)
- return ret;
- *devp = dev;
-
- return 0;
+ ret = uclass_find_first_device(id, &dev);
+ return uclass_get_device_tail(dev, ret, devp);
}
int uclass_next_device(struct udevice **devp)
@@ -300,17 +318,8 @@ int uclass_next_device(struct udevice **devp)
int ret;
*devp = NULL;
- if (list_is_last(&dev->uclass_node, &dev->uclass->dev_head))
- return 0;
-
- dev = list_entry(dev->uclass_node.next, struct udevice,
-uclass_node);
- ret = device_probe(dev);
- if (ret)
- return ret;
- *devp = dev;
-
- return 0;
+ ret = uclass_find_next_device(&dev);
+ return uclass_get_device_tail(dev, ret, devp);
}
int uclass_bind_device(struct udevice *dev)
diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h
index ae2a93d..befbae5 100644
--- a/include/dm/uclass-internal.h
+++ b/include/dm/uclass-internal.h
@@ -24,6 +24,28 @@
int uclass_find_device(enum uclass_id id, int index, struct udevice **devp);
/**
+ * uclass_find_first_device() - Return the first device in a uclass
+ * @id:Id number of the uclass
+ * #devp: Returns pointer to device, or NULL on error
+ *
+ * The device is not prepared for use - this is an internal function
+ *
+ * @return 0 if OK (found or not found), -1 on error
+ */
+int uclass_find_first_device(enum uclass_id id, struct udevice **devp);
+
+/**
+ * uclass_find_next_device() - Return the next device in a uclass
+ * @devp: On entry, pointer to device to lookup. On exit, returns pointer
+ * to the next device in the same uclass, or NULL if none
+ *
+ * The device is not prepared for use - this is an internal function
+ *
+ * @return 0 if OK (found or not found), -1 on error
+ */
+int uclass_find_next_device(struct udevice **devp);
+
+/**
* uclass_bind_device() - Associate device with a uclass
*
* Connect the device into uclass's list of devices.
--
1.9.1
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