Add a function which scans the driver model device information rather
than scanning the PCI bus again.
Signed-off-by: Simon Glass <s...@chromium.org>
---
drivers/pci/pci-uclass.c | 20 ++++++++++++++++++++
include/pci.h | 10 ++++++++++
2 files changed, 30 insertions(+)
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 6376e43..929d772 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -233,6 +233,26 @@ 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 f29804f..d4f6e02 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -1186,6 +1186,16 @@ 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 {
--
2.6.0.rc2.230.g3dd15c0
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