/* 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; }