diff options
| -rw-r--r-- | drivers/pci/pci-uclass.c | 20 | ||||
| -rw-r--r-- | include/pci.h | 10 |
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 { |