src/soc/amd/glinda/xhci.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* TODO: Update for Glinda */
   4
   5 #include <amdblocks/gpio.h>
   6 #include <amdblocks/smi.h>
   7 #include <bootstate.h>
   8 #include <device/device.h>
   9 #include <device/pci_ids.h>
  10 #include <drivers/usb/pci_xhci/pci_xhci.h>
  11 #include <soc/pci_devs.h>
  12 #include <soc/smi.h>
  13
  14 static const struct sci_source xhci_sci_sources[] = {
  15         {
  16                 .scimap = SMITYPE_XHC0_PME,
  17                 .gpe = GEVENT_31,
  18                 .direction = SMI_SCI_LVL_HIGH,
  19                 .level = SMI_SCI_EDG
  20         },
  21         {
  22                 .scimap = SMITYPE_XHC1_PME,
  23                 .gpe = GEVENT_31,
  24                 .direction = SMI_SCI_LVL_HIGH,
  25                 .level = SMI_SCI_EDG
  26         },
  27         {
  28                 .scimap = SMITYPE_XHC3_PME,
  29                 .gpe = GEVENT_31,
  30                 .direction = SMI_SCI_LVL_HIGH,
  31                 .level = SMI_SCI_EDG
  32         },
  33         {
  34                 .scimap = SMITYPE_XHC4_PME,
  35                 .gpe = GEVENT_31,
  36                 .direction = SMI_SCI_LVL_HIGH,
  37                 .level = SMI_SCI_EDG
  38         }
  39 };
  40
  41 enum cb_err pci_xhci_get_wake_gpe(const struct device *dev, int *gpe)
  42 {
  43         if (dev->upstream->dev->path.type != DEVICE_PATH_PCI)
  44                 return CB_ERR_ARG;
  45
  46         if (dev->path.type != DEVICE_PATH_PCI)
  47                 return CB_ERR_ARG;
  48
  49         if (dev->upstream->dev->path.pci.devfn == PCIE_ABC_A_DEVFN) {
  50                 if (dev->path.pci.devfn == XHCI1_DEVFN) {
  51                         *gpe = xhci_sci_sources[1].gpe;
  52                         return CB_SUCCESS;
  53                 }
  54         } else if (dev->upstream->dev->path.pci.devfn == PCIE_ABC_C_DEVFN) {
  55                 if (dev->path.pci.devfn == XHCI0_DEVFN) {
  56                         *gpe = xhci_sci_sources[0].gpe;
  57                         return CB_SUCCESS;
  58                 } else if (dev->path.pci.devfn == USB4_XHCI0_DEVFN) {
  59                         *gpe = xhci_sci_sources[2].gpe;
  60                         return CB_SUCCESS;
  61                 } else if (dev->path.pci.devfn == USB4_XHCI1_DEVFN) {
  62                         *gpe = xhci_sci_sources[3].gpe;
  63                         return CB_SUCCESS;
  64                 }
  65         }
  66
  67         return CB_ERR_ARG;
  68 }
  69
  70 static void configure_xhci_sci(void *unused)
  71 {
  72         gpe_configure_sci(xhci_sci_sources, ARRAY_SIZE(xhci_sci_sources) - 1);
  73 }
  74
  75 BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, configure_xhci_sci, NULL);