src/soc/intel/alderlake/i2c.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /*
   4  * This file is created based on Intel Alder Lake Processor PCH Datasheet
   5  * Document number: 621483
   6  * Chapter number: 13
   7  */
   8
   9 #include <device/device.h>
  10 #include <drivers/i2c/designware/dw_i2c.h>
  11 #include <soc/pci_devs.h>
  12
  13 int dw_i2c_soc_devfn_to_bus(unsigned int devfn)
  14 {
  15         switch (devfn) {
  16         case PCH_DEVFN_I2C0:
  17                 return 0;
  18         case PCH_DEVFN_I2C1:
  19                 return 1;
  20         case PCH_DEVFN_I2C2:
  21                 return 2;
  22         case PCH_DEVFN_I2C3:
  23                 return 3;
  24         case PCH_DEVFN_I2C4:
  25                 return 4;
  26         case PCH_DEVFN_I2C5:
  27                 return 5;
  28         case PCH_DEVFN_I2C6:
  29                 return 6;
  30         case PCH_DEVFN_I2C7:
  31                 return 7;
  32         }
  33         return -1;
  34 }
  35
  36 int dw_i2c_soc_bus_to_devfn(unsigned int bus)
  37 {
  38         switch (bus) {
  39         case 0:
  40                 return PCH_DEVFN_I2C0;
  41         case 1:
  42                 return PCH_DEVFN_I2C1;
  43         case 2:
  44                 return PCH_DEVFN_I2C2;
  45         case 3:
  46                 return PCH_DEVFN_I2C3;
  47         case 4:
  48                 return PCH_DEVFN_I2C4;
  49         case 5:
  50                 return PCH_DEVFN_I2C5;
  51         case 6:
  52                 return PCH_DEVFN_I2C6;
  53         case 7:
  54                 return PCH_DEVFN_I2C7;
  55         }
  56         return -1;
  57 }