| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <drivers/i2c/designware/dw_i2c.h> |
| #include <soc/pci_devs.h> |
| |
| /* Convert I2C bus number to PCI device and function */ |
| int dw_i2c_soc_bus_to_devfn(unsigned int bus) |
| { |
| if (bus <= 3) |
| return PCI_DEVFN(PCH_DEV_SLOT_SIO1, bus); |
| else if (bus >= 4 && bus <= 7) |
| return PCI_DEVFN(PCH_DEV_SLOT_SIO2, (bus - 4)); |
| else |
| return -1; |
| } |
| |
| /* Convert PCI device and function to I2C bus number */ |
| int dw_i2c_soc_devfn_to_bus(unsigned int devfn) |
| { |
| if (PCI_SLOT(devfn) == PCH_DEV_SLOT_SIO1) |
| return PCI_FUNC(devfn); |
| else if (PCI_SLOT(devfn) == PCH_DEV_SLOT_SIO2) |
| return PCI_FUNC(devfn) + 4; |
| else |
| return -1; |
| } |
