src/soc/intel/alderlake/spi.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /*
   4  * This file is created based on Intel Alder Lake Processor PCH Datasheet
   5  * Document number: 621483
   6  * Chapter number: 7
   7  */
   8
   9 #include <intelblocks/fast_spi.h>
  10 #include <intelblocks/spi.h>
  11 #include <soc/pci_devs.h>
  12 #include <soc/pcr_ids.h>
  13
  14 int spi_soc_devfn_to_bus(unsigned int devfn)
  15 {
  16         switch (devfn) {
  17         case PCH_DEVFN_SPI:
  18                 return 0;
  19         case PCH_DEVFN_GSPI0:
  20                 return 1;
  21         case PCH_DEVFN_GSPI1:
  22                 return 2;
  23         case PCH_DEVFN_GSPI2:
  24                 return 3;
  25         case PCH_DEVFN_GSPI3:
  26                 return 4;
  27         }
  28         return -1;
  29 }
  30
  31 uint32_t soc_get_spi_dmi_destination_id(void)
  32 {
  33         return SPI_DMI_DESTINATION_ID;
  34 }