/* Disable runtime wake capability if it is enabled */
void zpodd_disable_run_wake(struct ata_device *dev)
{
struct zpodd *zpodd = dev->zpodd;
if (zpodd->powered_off) {
acpi_pm_device_run_wake(&dev->sdev->sdev_gendev, false);
device_set_run_wake(&dev->sdev->sdev_gendev, false);
}
}
/*
* Enable runtime wake capability through ACPI and set the powered_off flag,
* this flag will be used during resume to decide what operations are needed
* to take.
*
* Also, media poll needs to be silenced, so that it doesn't bring the ODD
* back to full power state every few seconds.
*/
void zpodd_enable_run_wake(struct ata_device *dev)
{
struct zpodd *zpodd = dev->zpodd;
sdev_disable_disk_events(dev->sdev);
zpodd->powered_off = true;
device_set_run_wake(&dev->sdev->sdev_gendev, true);
acpi_pm_device_run_wake(&dev->sdev->sdev_gendev, true);
}
static int acpi_pci_bind(struct acpi_device *device)
{
acpi_status status;
acpi_handle handle;
unsigned char bus;
struct pci_dev *dev;
dev = acpi_get_pci_dev(device->handle);
if (!dev)
return 0;
pci_acpi_add_pm_notifier(device, dev);
acpi_power_resource_register_device(&dev->dev, device->handle);
if (device->wakeup.flags.run_wake)
device_set_run_wake(&dev->dev, true);
/*
* Install the 'bind' function to facilitate callbacks for
* children of the P2P bridge.
*/
if (dev->subordinate) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device %04x:%02x:%02x.%d is a PCI bridge\n",
pci_domain_nr(dev->bus), dev->bus->number,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)));
device->ops.bind = acpi_pci_bind;
device->ops.unbind = acpi_pci_unbind;
}
/*
* Evaluate and parse _PRT, if exists. This code allows parsing of
* _PRT objects within the scope of non-bridge devices. Note that
* _PRTs within the scope of a PCI bridge assume the bridge's
* subordinate bus number.
*
* TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
*/
status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
if (ACPI_FAILURE(status))
goto out;
if (dev->subordinate)
bus = dev->subordinate->number;
else
bus = dev->bus->number;
acpi_pci_irq_add_prt(device->handle, pci_domain_nr(dev->bus), bus);
out:
pci_dev_put(dev);
return 0;
}
static int acpi_pci_unbind(struct acpi_device *device)
{
struct pci_dev *dev;
dev = acpi_get_pci_dev(device->handle);
if (!dev)
goto out;
device_set_run_wake(&dev->dev, false);
pci_acpi_remove_pm_notifier(device);
acpi_power_resource_unregister_device(&dev->dev, device->handle);
if (!dev->subordinate)
goto out;
acpi_pci_irq_del_prt(pci_domain_nr(dev->bus), dev->subordinate->number);
device->ops.bind = NULL;
device->ops.unbind = NULL;
out:
pci_dev_put(dev);
return 0;
}
static void __devinit txe_pci_early_quirks(struct pci_dev *pci_dev)
{
dev_info(&pci_dev->dev, "txe: set run wake flag\n");
device_set_run_wake(&pci_dev->dev, true);
}
static int dwc3_pci_probe(struct pci_dev *pci,
const struct pci_device_id *id)
{
struct dwc3_pci *dwc;
struct resource res[2];
int ret;
struct device *dev = &pci->dev;
ret = pcim_enable_device(pci);
if (ret) {
dev_err(dev, "failed to enable pci device\n");
return -ENODEV;
}
pci_set_master(pci);
dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL);
if (!dwc)
return -ENOMEM;
dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
if (!dwc->dwc3)
return -ENOMEM;
memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
res[0].start = pci_resource_start(pci, 0);
res[0].end = pci_resource_end(pci, 0);
res[0].name = "dwc_usb3";
res[0].flags = IORESOURCE_MEM;
res[1].start = pci->irq;
res[1].name = "dwc_usb3";
res[1].flags = IORESOURCE_IRQ;
ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));
if (ret) {
dev_err(dev, "couldn't add resources to dwc3 device\n");
return ret;
}
dwc->pci = pci;
dwc->dwc3->dev.parent = dev;
ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev));
ret = dwc3_pci_quirks(dwc);
if (ret)
goto err;
ret = platform_device_add(dwc->dwc3);
if (ret) {
dev_err(dev, "failed to register dwc3 device\n");
goto err;
}
device_init_wakeup(dev, true);
device_set_run_wake(dev, true);
pci_set_drvdata(pci, dwc);
pm_runtime_put(dev);
return 0;
err:
platform_device_put(dwc->dwc3);
return ret;
}