From 9f60fb0db4b70c65760cb1799b76de1c9b71644d Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 19 Nov 2015 20:27:00 -0700 Subject: dm: pci: Add a function to get the controller for a bus A PCI bus may be a bridge device where the controller is the bridge's parent. Add a function to return the controller device, given a PCI device. Signed-off-by: Simon Glass Acked-by: Stephen Warren Tested-by: Stephen Warren --- drivers/pci/pci-uclass.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/pci/pci-uclass.c') diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index e38e0b2..f3f5f00 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -53,6 +53,14 @@ struct pci_controller *pci_bus_to_hose(int busnum) return dev_get_uclass_priv(bus); } +struct udevice *pci_get_controller(struct udevice *dev) +{ + while (device_is_on_pci_bus(dev)) + dev = dev->parent; + + return dev; +} + pci_dev_t pci_get_bdf(struct udevice *dev) { struct pci_child_platdata *pplat = dev_get_parent_platdata(dev); -- cgit v1.1