On Tue, Nov 17, 2015 at 11:53 AM, Simon Glass sjg@chromium.org wrote:
Add a function which scans the driver model device information rather than scanning the PCI bus again.
Signed-off-by: Simon Glass sjg@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 { --
Reviewed-by: Bin Meng bmeng.cn@gmail.com