Commit bbb44d9f authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Jesse Barnes

PCI: implement new suspend/resume callbacks

Implement new suspend and hibernation callbacks for the PCI bus type.
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 1eede070
......@@ -274,16 +274,25 @@ static int pci_device_remove(struct device * dev)
return 0;
}
static int pci_device_suspend(struct device * dev, pm_message_t state)
static void pci_device_shutdown(struct device *dev)
{
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
int i = 0;
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
if (drv && drv->suspend) {
i = drv->suspend(pci_dev, state);
suspend_report_result(drv->suspend, i);
} else {
if (drv && drv->shutdown)
drv->shutdown(pci_dev);
pci_msi_shutdown(pci_dev);
pci_msix_shutdown(pci_dev);
}
#ifdef CONFIG_PM_SLEEP
/*
* Default "suspend" method for devices that have no driver provided suspend,
* or not even a driver at all.
*/
static void pci_default_pm_suspend(struct pci_dev *pci_dev)
{
pci_save_state(pci_dev);
/*
* mark its power state as "unknown", since we don't know if
......@@ -291,31 +300,13 @@ static int pci_device_suspend(struct device * dev, pm_message_t state)
*/
if (pci_dev->current_state == PCI_D0)
pci_dev->current_state = PCI_UNKNOWN;
}
pci_fixup_device(pci_fixup_suspend, pci_dev);
return i;
}
static int pci_device_suspend_late(struct device * dev, pm_message_t state)
{
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
int i = 0;
if (drv && drv->suspend_late) {
i = drv->suspend_late(pci_dev, state);
suspend_report_result(drv->suspend_late, i);
}
return i;
}
/*
* Default resume method for devices that have no driver provided resume,
* Default "resume" method for devices that have no driver provided resume,
* or not even a driver at all.
*/
static int pci_default_resume(struct pci_dev *pci_dev)
static int pci_default_pm_resume(struct pci_dev *pci_dev)
{
int retval = 0;
......@@ -323,14 +314,45 @@ static int pci_default_resume(struct pci_dev *pci_dev)
pci_restore_state(pci_dev);
/* if the device was enabled before suspend, reenable */
retval = pci_reenable_device(pci_dev);
/* if the device was busmaster before the suspend, make it busmaster again */
/*
* if the device was busmaster before the suspend, make it busmaster
* again
*/
if (pci_dev->is_busmaster)
pci_set_master(pci_dev);
return retval;
}
static int pci_device_resume(struct device * dev)
static int pci_legacy_suspend(struct device *dev, pm_message_t state)
{
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
int i = 0;
if (drv && drv->suspend) {
i = drv->suspend(pci_dev, state);
suspend_report_result(drv->suspend, i);
} else {
pci_default_pm_suspend(pci_dev);
}
return i;
}
static int pci_legacy_suspend_late(struct device *dev, pm_message_t state)
{
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
int i = 0;
if (drv && drv->suspend_late) {
i = drv->suspend_late(pci_dev, state);
suspend_report_result(drv->suspend_late, i);
}
return i;
}
static int pci_legacy_resume(struct device *dev)
{
int error;
struct pci_dev * pci_dev = to_pci_dev(dev);
......@@ -339,35 +361,313 @@ static int pci_device_resume(struct device * dev)
if (drv && drv->resume)
error = drv->resume(pci_dev);
else
error = pci_default_resume(pci_dev);
pci_fixup_device(pci_fixup_resume, pci_dev);
error = pci_default_pm_resume(pci_dev);
return error;
}
static int pci_device_resume_early(struct device * dev)
static int pci_legacy_resume_early(struct device *dev)
{
int error = 0;
struct pci_dev * pci_dev = to_pci_dev(dev);
struct pci_driver * drv = pci_dev->driver;
pci_fixup_device(pci_fixup_resume_early, pci_dev);
if (drv && drv->resume_early)
error = drv->resume_early(pci_dev);
return error;
}
static void pci_device_shutdown(struct device *dev)
static int pci_pm_prepare(struct device *dev)
{
struct device_driver *drv = dev->driver;
int error = 0;
if (drv && drv->pm && drv->pm->prepare)
error = drv->pm->prepare(dev);
return error;
}
static void pci_pm_complete(struct device *dev)
{
struct device_driver *drv = dev->driver;
if (drv && drv->pm && drv->pm->complete)
drv->pm->complete(dev);
}
#ifdef CONFIG_SUSPEND
static int pci_pm_suspend(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
if (drv && drv->pm) {
if (drv->pm->suspend) {
error = drv->pm->suspend(dev);
suspend_report_result(drv->pm->suspend, error);
} else {
pci_default_pm_suspend(pci_dev);
}
} else {
error = pci_legacy_suspend(dev, PMSG_SUSPEND);
}
pci_fixup_device(pci_fixup_suspend, pci_dev);
return error;
}
static int pci_pm_suspend_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
int error = 0;
if (drv && drv->shutdown)
drv->shutdown(pci_dev);
pci_msi_shutdown(pci_dev);
pci_msix_shutdown(pci_dev);
if (drv && drv->pm) {
if (drv->pm->suspend_noirq) {
error = drv->pm->suspend_noirq(dev);
suspend_report_result(drv->pm->suspend_noirq, error);
}
} else {
error = pci_legacy_suspend_late(dev, PMSG_SUSPEND);
}
return error;
}
static int pci_pm_resume(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error;
pci_fixup_device(pci_fixup_resume, pci_dev);
if (drv && drv->pm) {
error = drv->pm->resume ? drv->pm->resume(dev) :
pci_default_pm_resume(pci_dev);
} else {
error = pci_legacy_resume(dev);
}
return error;
}
static int pci_pm_resume_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
int error = 0;
pci_fixup_device(pci_fixup_resume_early, pci_dev);
if (drv && drv->pm) {
if (drv->pm->resume_noirq)
error = drv->pm->resume_noirq(dev);
} else {
error = pci_legacy_resume_early(dev);
}
return error;
}
#else /* !CONFIG_SUSPEND */
#define pci_pm_suspend NULL
#define pci_pm_suspend_noirq NULL
#define pci_pm_resume NULL
#define pci_pm_resume_noirq NULL
#endif /* !CONFIG_SUSPEND */
#ifdef CONFIG_HIBERNATION
static int pci_pm_freeze(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error = 0;
if (drv && drv->pm) {
if (drv->pm->freeze) {
error = drv->pm->freeze(dev);
suspend_report_result(drv->pm->freeze, error);
} else {
pci_default_pm_suspend(pci_dev);
}
} else {
error = pci_legacy_suspend(dev, PMSG_FREEZE);
pci_fixup_device(pci_fixup_suspend, pci_dev);
}
return error;
}
static int pci_pm_freeze_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
int error = 0;
if (drv && drv->pm) {
if (drv->pm->freeze_noirq) {
error = drv->pm->freeze_noirq(dev);
suspend_report_result(drv->pm->freeze_noirq, error);
}
} else {
error = pci_legacy_suspend_late(dev, PMSG_FREEZE);
}
return error;
}
static int pci_pm_thaw(struct device *dev)
{
struct device_driver *drv = dev->driver;
int error = 0;
if (drv && drv->pm) {
if (drv->pm->thaw)
error = drv->pm->thaw(dev);
} else {
pci_fixup_device(pci_fixup_resume, to_pci_dev(dev));
error = pci_legacy_resume(dev);
}
return error;
}
static int pci_pm_thaw_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
int error = 0;
if (drv && drv->pm) {
if (drv->pm->thaw_noirq)
error = drv->pm->thaw_noirq(dev);
} else {
pci_fixup_device(pci_fixup_resume_early, pci_dev);
error = pci_legacy_resume_early(dev);
}
return error;
}
static int pci_pm_poweroff(struct device *dev)
{
struct device_driver *drv = dev->driver;
int error = 0;
pci_fixup_device(pci_fixup_suspend, to_pci_dev(dev));
if (drv && drv->pm) {
if (drv->pm->poweroff) {
error = drv->pm->poweroff(dev);
suspend_report_result(drv->pm->poweroff, error);
}
} else {
error = pci_legacy_suspend(dev, PMSG_HIBERNATE);
}
return error;
}
static int pci_pm_poweroff_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
int error = 0;
if (drv && drv->pm) {
if (drv->pm->poweroff_noirq) {
error = drv->pm->poweroff_noirq(dev);
suspend_report_result(drv->pm->poweroff_noirq, error);
}
} else {
error = pci_legacy_suspend_late(dev, PMSG_HIBERNATE);
}
return error;
}
static int pci_pm_restore(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct device_driver *drv = dev->driver;
int error;
if (drv && drv->pm) {
error = drv->pm->restore ? drv->pm->restore(dev) :
pci_default_pm_resume(pci_dev);
} else {
error = pci_legacy_resume(dev);
}
pci_fixup_device(pci_fixup_resume, pci_dev);
return error;
}
static int pci_pm_restore_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
int error = 0;
pci_fixup_device(pci_fixup_resume, pci_dev);
if (drv && drv->pm) {
if (drv->pm->restore_noirq)
error = drv->pm->restore_noirq(dev);
} else {
error = pci_legacy_resume_early(dev);
}
pci_fixup_device(pci_fixup_resume_early, pci_dev);
return error;
}
#else /* !CONFIG_HIBERNATION */
#define pci_pm_freeze NULL
#define pci_pm_freeze_noirq NULL
#define pci_pm_thaw NULL
#define pci_pm_thaw_noirq NULL
#define pci_pm_poweroff NULL
#define pci_pm_poweroff_noirq NULL
#define pci_pm_restore NULL
#define pci_pm_restore_noirq NULL
#endif /* !CONFIG_HIBERNATION */
struct pm_ext_ops pci_pm_ops = {
.base = {
.prepare = pci_pm_prepare,
.complete = pci_pm_complete,
.suspend = pci_pm_suspend,
.resume = pci_pm_resume,
.freeze = pci_pm_freeze,
.thaw = pci_pm_thaw,
.poweroff = pci_pm_poweroff,
.restore = pci_pm_restore,
},
.suspend_noirq = pci_pm_suspend_noirq,
.resume_noirq = pci_pm_resume_noirq,
.freeze_noirq = pci_pm_freeze_noirq,
.thaw_noirq = pci_pm_thaw_noirq,
.poweroff_noirq = pci_pm_poweroff_noirq,
.restore_noirq = pci_pm_restore_noirq,
};
#define PCI_PM_OPS_PTR &pci_pm_ops
#else /* !CONFIG_PM_SLEEP */
#define PCI_PM_OPS_PTR NULL
#endif /* !CONFIG_PM_SLEEP */
/**
* __pci_register_driver - register a new pci driver
* @drv: the driver structure to register
......@@ -390,6 +690,9 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
drv->driver.owner = owner;
drv->driver.mod_name = mod_name;
if (drv->pm)
drv->driver.pm = &drv->pm->base;
spin_lock_init(&drv->dynids.lock);
INIT_LIST_HEAD(&drv->dynids.list);
......@@ -515,12 +818,9 @@ struct bus_type pci_bus_type = {
.uevent = pci_uevent,
.probe = pci_device_probe,
.remove = pci_device_remove,
.suspend = pci_device_suspend,
.suspend_late = pci_device_suspend_late,
.resume_early = pci_device_resume_early,
.resume = pci_device_resume,
.shutdown = pci_device_shutdown,
.dev_attrs = pci_dev_attrs,
.pm = PCI_PM_OPS_PTR,
};
static int __init pci_driver_init(void)
......
......@@ -389,7 +389,7 @@ struct pci_driver {
int (*resume_early) (struct pci_dev *dev);
int (*resume) (struct pci_dev *dev); /* Device woken up */
void (*shutdown) (struct pci_dev *dev);
struct pm_ext_ops *pm;
struct pci_error_handlers *err_handler;
struct device_driver driver;
struct pci_dynids dynids;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment