Commit e9af9229 authored by Felipe Balbi's avatar Felipe Balbi

usb: dwc3: pci: add Power Management dummy hooks

Allow for dwc3-pci to reach D3 and enable pm_runtime
by providing dummy PM hooks. Without them, PCI
subsystem won't put device to D3.
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent fc8bb91b
......@@ -20,6 +20,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include <linux/gpio/consumer.h>
#include <linux/acpi.h>
......@@ -180,7 +181,11 @@ static int dwc3_pci_probe(struct pci_dev *pci,
goto err;
}
device_init_wakeup(dev, true);
device_set_run_wake(dev, true);
pci_set_drvdata(pci, dwc3);
pm_runtime_put(dev);
return 0;
err:
platform_device_put(dwc3);
......@@ -189,6 +194,8 @@ static int dwc3_pci_probe(struct pci_dev *pci,
static void dwc3_pci_remove(struct pci_dev *pci)
{
device_init_wakeup(&pci->dev, false);
pm_runtime_get(&pci->dev);
acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
platform_device_unregister(pci_get_drvdata(pci));
}
......@@ -219,11 +226,43 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
};
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
#ifdef CONFIG_PM
static int dwc3_pci_runtime_suspend(struct device *dev)
{
if (device_run_wake(dev))
return 0;
return -EBUSY;
}
static int dwc3_pci_pm_dummy(struct device *dev)
{
/*
* There's nothing to do here. No, seriously. Everything is either taken
* care either by PCI subsystem or dwc3/core.c, so we have nothing
* missing here.
*
* So you'd think we didn't need this at all, but PCI subsystem will
* bail out if we don't have a valid callback :-s
*/
return 0;
}
#endif /* CONFIG_PM */
static struct dev_pm_ops dwc3_pci_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_pm_dummy, dwc3_pci_pm_dummy)
SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_pm_dummy,
NULL)
};
static struct pci_driver dwc3_pci_driver = {
.name = "dwc3-pci",
.id_table = dwc3_pci_id_table,
.probe = dwc3_pci_probe,
.remove = dwc3_pci_remove,
.driver = {
.pm = &dwc3_pci_dev_pm_ops,
}
};
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
......
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