device: Move dev_find_path() to device_const.c

Make it available early and use it in dev_find_next_pci_device().

Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/26294
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

1 files changed, 26 insertions, 11 deletions

diff --git a/src/device/device_const.c b/src/device/device_const.c
index 2cacb4a9ac..084d2ac385 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -51,22 +51,25 @@ DEVTREE_CONST struct device *dev_find_slot(unsigned int bus,
 }
 
 /**
- * Given a device pointer, find the next PCI device.
+ * Given a Device Path Type, find the device structure.
  *
- * @param previous_dev A pointer to a PCI device structure.
- * @return Pointer to the next device structure (if found), 0 otherwise.
+ * @param prev_match The previously matched device instance.
+ * @param path_type The Device Path Type.
+ * @return Pointer to the device structure (if found), 0 otherwise.
  */
-DEVTREE_CONST struct device *dev_find_next_pci_device(
-		DEVTREE_CONST struct device *previous_dev)
+DEVTREE_CONST struct device *dev_find_path(
+		DEVTREE_CONST struct device *prev_match,
+		enum device_path_type path_type)
 {
-	DEVTREE_CONST struct device *dev, *result;
+	DEVTREE_CONST struct device *dev, *result = NULL;
 
-	if (previous_dev == NULL)
-		previous_dev = all_devices;
+	if (prev_match == NULL)
+		prev_match = all_devices;
+	else
+		prev_match = prev_match->next;
 
-	result = 0;
-	for (dev = previous_dev->next; dev; dev = dev->next) {
-		if (dev->path.type == DEVICE_PATH_PCI) {
+	for (dev = prev_match; dev; dev = dev->next) {
+		if (dev->path.type == path_type) {
 			result = dev;
 			break;
 		}
@@ -75,6 +78,18 @@ DEVTREE_CONST struct device *dev_find_next_pci_device(
 }
 
 /**
+ * Given a device pointer, find the next PCI device.
+ *
+ * @param previous_dev A pointer to a PCI device structure.
+ * @return Pointer to the next device structure (if found), 0 otherwise.
+ */
+DEVTREE_CONST struct device *dev_find_next_pci_device(
+		DEVTREE_CONST struct device *previous_dev)
+{
+	return dev_find_path(previous_dev, DEVICE_PATH_PCI);
+}
+
+/**
  * Given an SMBus bus and a device number, find the device structure.
  *
  * @param bus The bus number.