src/soc/intel/tigerlake/spi.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /*
   4  * This file is created based on Intel Tiger Lake Processor PCH Datasheet
   5  * Document number: 575857
   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 <stdint.h>
  13
  14 #define PSF_SPI_DESTINATION_ID_H        0x23b0
  15 #define PSF_SPI_DESTINATION_ID          0x23a8
  16
  17 int spi_soc_devfn_to_bus(unsigned int devfn)
  18 {
  19         switch (devfn) {
  20         case PCH_DEVFN_GSPI0:
  21                 return 1;
  22         case PCH_DEVFN_GSPI1:
  23                 return 2;
  24         case PCH_DEVFN_GSPI2:
  25                 return 3;
  26         }
  27         return -1;
  28 }
  29
  30 uint32_t soc_get_spi_psf_destination_id(void)
  31 {
  32         if (CONFIG(SOC_INTEL_TIGERLAKE_PCH_H))
  33                 return PSF_SPI_DESTINATION_ID_H;
  34         return PSF_SPI_DESTINATION_ID;
  35 }