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dm: Adjust lists_bind_fdt() to return the bound device

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Allow the caller to find out the device that was bound in response to this
call.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2014-09-04 16:27:25 -06:00
parent aac07d49d0
commit 1f359e3611
3 changed files with 13 additions and 5 deletions
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10
drivers/core/lists.c
View file

@ -118,7 +118,8 @@ static int driver_check_compatible(const void *blob, int offset,
return -ENOENT; return -ENOENT;
} }
int lists_bind_fdt(struct udevice *parent, const void *blob, int offset) int lists_bind_fdt(struct udevice *parent, const void *blob, int offset,
struct udevice **devp)
{ {
struct driver *driver = ll_entry_start(struct driver, driver); struct driver *driver = ll_entry_start(struct driver, driver);
const int n_ents = ll_entry_count(struct driver, driver); const int n_ents = ll_entry_count(struct driver, driver);
@ -130,6 +131,8 @@ int lists_bind_fdt(struct udevice *parent, const void *blob, int offset)
int ret = 0; int ret = 0;
dm_dbg("bind node %s\n", fdt_get_name(blob, offset, NULL)); dm_dbg("bind node %s\n", fdt_get_name(blob, offset, NULL));
if (devp)
*devp = NULL;
for (entry = driver; entry != driver + n_ents; entry++) { for (entry = driver; entry != driver + n_ents; entry++) {
ret = driver_check_compatible(blob, offset, entry->of_match); ret = driver_check_compatible(blob, offset, entry->of_match);
name = fdt_get_name(blob, offset, NULL); name = fdt_get_name(blob, offset, NULL);
@ -149,10 +152,11 @@ int lists_bind_fdt(struct udevice *parent, const void *blob, int offset)
ret = device_bind(parent, entry, name, NULL, offset, &dev); ret = device_bind(parent, entry, name, NULL, offset, &dev);
if (ret) { if (ret) {
dm_warn("Error binding driver '%s'\n", entry->name); dm_warn("Error binding driver '%s'\n", entry->name);
if (!result || ret != -ENOENT) return ret;
result = ret;
} else { } else {
found = true; found = true;
if (devp)
*devp = dev;
} }
break; break;
} }

2
drivers/core/root.c
View file

@ -91,7 +91,7 @@ int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
if (pre_reloc_only && if (pre_reloc_only &&
!fdt_getprop(blob, offset, "u-boot,dm-pre-reloc", NULL)) !fdt_getprop(blob, offset, "u-boot,dm-pre-reloc", NULL))
continue; continue;
err = lists_bind_fdt(parent, blob, offset); err = lists_bind_fdt(parent, blob, offset, NULL);
if (err && !ret) if (err && !ret)
ret = err; ret = err;
} }

6
include/dm/lists.h
View file

@ -53,7 +53,11 @@ int lists_bind_drivers(struct udevice *parent, bool pre_reloc_only);
* @parent: parent driver (root) * @parent: parent driver (root)
* @blob: device tree blob * @blob: device tree blob
* @offset: offset of this device tree node * @offset: offset of this device tree node
* @devp: if non-NULL, returns a pointer to the bound device
* @return 0 if device was bound, -EINVAL if the device tree is invalid,
* other -ve value on error
*/ */
int lists_bind_fdt(struct udevice *parent, const void *blob, int offset); int lists_bind_fdt(struct udevice *parent, const void *blob, int offset,
struct udevice **devp);
#endif #endif