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-rw-r--r--drivers/pci/pci-uclass.c20
-rw-r--r--include/pci.h10
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index af6de51..dea0cb6 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -234,6 +234,26 @@ int dm_pci_find_device(unsigned int vendor, unsigned int device, int index,
return -ENODEV;
}
+int dm_pci_find_class(uint find_class, int index, struct udevice **devp)
+{
+ struct udevice *dev;
+
+ /* Scan all known buses */
+ for (pci_find_first_device(&dev);
+ dev;
+ pci_find_next_device(&dev)) {
+ struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
+
+ if (pplat->class == find_class && !index--) {
+ *devp = dev;
+ return device_probe(*devp);
+ }
+ }
+ *devp = NULL;
+
+ return -ENODEV;
+}
+
int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset,
unsigned long value, enum pci_size_t size)
{
diff --git a/include/pci.h b/include/pci.h
index 347dd0a..443af83 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -1179,6 +1179,16 @@ int dm_pci_find_device(unsigned int vendor, unsigned int device, int index,
struct udevice **devp);
/**
+ * dm_pci_find_class() - find a device by class
+ *
+ * @find_class: 3-byte (24-bit) class value to find
+ * @index: 0 to find the first match, 1 for second, etc.
+ * @devp: Returns pointer to the device, if found
+ * @return 0 if found, -ve on error
+ */
+int dm_pci_find_class(uint find_class, int index, struct udevice **devp);
+
+/**
* struct dm_pci_emul_ops - PCI device emulator operations
*/
struct dm_pci_emul_ops {