i2c.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
/*
 * This file is created based on Intel Alder Lake Processor PCH Datasheet
 * Document number: 621483
 * Chapter number: 13
 */
 
#include <device/device.h>
#include <drivers/i2c/designware/dw_i2c.h>
#include <soc/pci_devs.h>
 
int dw_i2c_soc_devfn_to_bus(unsigned int devfn)
{
        switch (devfn) {
        case PCH_DEVFN_I2C0:
                return 0;
        case PCH_DEVFN_I2C1:
                return 1;
        case PCH_DEVFN_I2C2:
                return 2;
        case PCH_DEVFN_I2C3:
                return 3;
        case PCH_DEVFN_I2C4:
                return 4;
        case PCH_DEVFN_I2C5:
                return 5;
        case PCH_DEVFN_I2C6:
                return 6;
        case PCH_DEVFN_I2C7:
                return 7;
        }
        return -1;
}
 
int dw_i2c_soc_bus_to_devfn(unsigned int bus)
{
        switch (bus) {
        case 0:
                return PCH_DEVFN_I2C0;
        case 1:
                return PCH_DEVFN_I2C1;
        case 2:
                return PCH_DEVFN_I2C2;
        case 3:
                return PCH_DEVFN_I2C3;
        case 4:
                return PCH_DEVFN_I2C4;
        case 5:
                return PCH_DEVFN_I2C5;
        case 6:
                return PCH_DEVFN_I2C6;
        case 7:
                return PCH_DEVFN_I2C7;
        }
        return -1;
}