usb.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <device/pci_ehci.h>
#include <soc/acpi.h>
#include <soc/pci_devs.h>
#include <soc/southbridge.h>
#include <amdblocks/acpimmio.h>
 
static void set_usb_over_current(struct device *dev)
{
        uint16_t map = USB_OC_DISABLE_ALL;
 
        if (dev->path.pci.devfn == XHCI_DEVFN) {
                if (mainboard_get_xhci_oc_map(&map) == 0) {
                        xhci_pm_write32(XHCI_PM_INDIRECT_INDEX,
                                                XHCI_OVER_CURRENT_CONTROL);
                        xhci_pm_write16(XHCI_PM_INDIRECT_DATA, map);
                }
        }
 
        if (dev->path.pci.devfn == EHCI1_DEVFN) {
                if (mainboard_get_ehci_oc_map(&map) == 0)
                        pci_write_config16(dev, EHCI_OVER_CURRENT_CONTROL, map);
        }
}
 
int __weak mainboard_get_xhci_oc_map(uint16_t *map)
{
        printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
        return -1;
}
 
int __weak mainboard_get_ehci_oc_map(uint16_t *map)
{
        printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
        return -1;
}
 
static struct device_operations usb_ops = {
        .read_resources = pci_ehci_read_resources,
        .set_resources = pci_dev_set_resources,
        .enable_resources = pci_dev_enable_resources,
        .init = set_usb_over_current,
        .scan_bus = scan_static_bus,
        .acpi_name = soc_acpi_name,
        .ops_pci = &pci_dev_ops_pci,
};
 
static const unsigned short pci_device_ids[] = {
        PCI_DID_AMD_SB900_USB_18_0,
        PCI_DID_AMD_SB900_USB_18_2,
        PCI_DID_AMD_SB900_USB_20_5,
        PCI_DID_AMD_CZ_USB_0,
        PCI_DID_AMD_CZ_USB_1,
        PCI_DID_AMD_CZ_USB3_0,
        0
};
 
static const struct pci_driver usb_0_driver __pci_driver = {
        .ops = &usb_ops,
        .vendor = PCI_VID_AMD,
        .devices = pci_device_ids,
};