src/soc/amd/stoneyridge/usb.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <device/device.h>
   5 #include <device/pci.h>
   6 #include <device/pci_ids.h>
   7 #include <device/pci_ops.h>
   8 #include <device/pci_ehci.h>
   9 #include <soc/acpi.h>
  10 #include <soc/pci_devs.h>
  11 #include <soc/southbridge.h>
  12 #include <amdblocks/acpimmio.h>
  13
  14 static void set_usb_over_current(struct device *dev)
  15 {
  16         uint16_t map = USB_OC_DISABLE_ALL;
  17
  18         if (dev->path.pci.devfn == XHCI_DEVFN) {
  19                 if (mainboard_get_xhci_oc_map(&map) == 0) {
  20                         xhci_pm_write32(XHCI_PM_INDIRECT_INDEX,
  21                                                 XHCI_OVER_CURRENT_CONTROL);
  22                         xhci_pm_write16(XHCI_PM_INDIRECT_DATA, map);
  23                 }
  24         }
  25
  26         if (dev->path.pci.devfn == EHCI1_DEVFN) {
  27                 if (mainboard_get_ehci_oc_map(&map) == 0)
  28                         pci_write_config16(dev, EHCI_OVER_CURRENT_CONTROL, map);
  29         }
  30 }
  31
  32 int __weak mainboard_get_xhci_oc_map(uint16_t *map)
  33 {
  34         printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
  35         return -1;
  36 }
  37
  38 int __weak mainboard_get_ehci_oc_map(uint16_t *map)
  39 {
  40         printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
  41         return -1;
  42 }
  43
  44 struct device_operations stoneyridge_usb_ops = {
  45         .read_resources = pci_ehci_read_resources,
  46         .set_resources = pci_dev_set_resources,
  47         .enable_resources = pci_dev_enable_resources,
  48         .init = set_usb_over_current,
  49         .scan_bus = scan_static_bus,
  50         .acpi_name = soc_acpi_name,
  51         .ops_pci = &pci_dev_ops_pci,
  52 };