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pci: Add pci_get_devfn() to extract devfn from the fdt_pci_addr

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This function will be used by the Marvell Armada XP/38x PCIe driver,
which is moved to DM right now. So let's extract the functionality
from pci_uclass_child_post_bind() to make it available.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Stefan Roese 2019-01-25 11:52:42 +01:00
parent e5fd39c886
commit b52142004f
2 changed files with 29 additions and 9 deletions
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10
include/pci.h
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@ -1560,6 +1560,16 @@ struct dm_pci_emul_ops {
int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn,
struct udevice **containerp, struct udevice **emulp);
/**
* pci_get_devfn() - Extract the devfn from fdt_pci_addr of the device
*
* Get devfn from fdt_pci_addr of the specifified device
*
* @dev: PCI device
* @return devfn in bits 15...8 if found, -ENODEV if not found
*/
int pci_get_devfn(struct udevice *dev);
#endif /* CONFIG_DM_PCI */
/**