src/soc/amd/cezanne/xhci.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <amdblocks/gpio.h>
   4 #include <amdblocks/smi.h>
   5 #include <amdblocks/xhci.h>
   6 #include <bootstate.h>
   7 #include <device/device.h>
   8 #include <drivers/usb/pci_xhci/pci_xhci.h>
   9 #include <soc/pci_devs.h>
  10 #include <soc/smi.h>
  11
  12 static const struct sci_source xhci_sci_sources[] = {
  13         {
  14                 .scimap = SMITYPE_XHC0_PME,
  15                 .gpe = XHCI_GEVENT,
  16                 .direction = SMI_SCI_LVL_HIGH,
  17                 .level = SMI_SCI_EDG
  18         },
  19         {
  20                 .scimap = SMITYPE_XHC1_PME,
  21                 .gpe = XHCI_GEVENT,
  22                 .direction = SMI_SCI_LVL_HIGH,
  23                 .level = SMI_SCI_EDG
  24         }
  25 };
  26
  27 enum cb_err pci_xhci_get_wake_gpe(const struct device *dev, int *gpe)
  28 {
  29         if (dev->upstream->dev->path.type != DEVICE_PATH_PCI)
  30                 return CB_ERR_ARG;
  31
  32         if (dev->upstream->dev->path.pci.devfn != PCIE_ABC_A_DEVFN)
  33                 return CB_ERR_ARG;
  34
  35         if (dev->path.type != DEVICE_PATH_PCI)
  36                 return CB_ERR_ARG;
  37
  38         if (dev->path.pci.devfn == XHCI0_DEVFN)
  39                 *gpe = xhci_sci_sources[0].gpe;
  40         else if (dev->path.pci.devfn == XHCI1_DEVFN)
  41                 *gpe = xhci_sci_sources[1].gpe;
  42         else
  43                 return CB_ERR_ARG;
  44
  45         return CB_SUCCESS;
  46 }
  47
  48 static void configure_xhci_sci(void *unused)
  49 {
  50         gpe_configure_sci(xhci_sci_sources, ARRAY_SIZE(xhci_sci_sources));
  51 }
  52
  53 BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, configure_xhci_sci, NULL);