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Implement new suspend and hibernation callbacks for platform busses
Implement new suspend and hibernation callbacks for the platform bus type. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg KH <greg@kroah.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Rafael J. Wysocki
Jesse Barnes
parent
bbb44d9f23
commit
25e18499e0
2 changed files with 289 additions and 8 deletions
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@ -453,6 +453,8 @@ int platform_driver_register(struct platform_driver *drv)
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drv->driver.suspend = platform_drv_suspend;
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if (drv->resume)
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drv->driver.resume = platform_drv_resume;
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if (drv->pm)
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drv->driver.pm = &drv->pm->base;
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return driver_register(&drv->driver);
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}
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EXPORT_SYMBOL_GPL(platform_driver_register);
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@ -560,7 +562,9 @@ static int platform_match(struct device *dev, struct device_driver *drv)
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return (strncmp(pdev->name, drv->name, BUS_ID_SIZE) == 0);
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}
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static int platform_suspend(struct device *dev, pm_message_t mesg)
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#ifdef CONFIG_PM_SLEEP
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static int platform_legacy_suspend(struct device *dev, pm_message_t mesg)
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{
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int ret = 0;
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@ -570,7 +574,7 @@ static int platform_suspend(struct device *dev, pm_message_t mesg)
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return ret;
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}
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static int platform_suspend_late(struct device *dev, pm_message_t mesg)
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static int platform_legacy_suspend_late(struct device *dev, pm_message_t mesg)
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{
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struct platform_driver *drv = to_platform_driver(dev->driver);
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struct platform_device *pdev;
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@ -583,7 +587,7 @@ static int platform_suspend_late(struct device *dev, pm_message_t mesg)
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return ret;
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}
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static int platform_resume_early(struct device *dev)
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static int platform_legacy_resume_early(struct device *dev)
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{
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struct platform_driver *drv = to_platform_driver(dev->driver);
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struct platform_device *pdev;
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@ -596,7 +600,7 @@ static int platform_resume_early(struct device *dev)
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return ret;
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}
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static int platform_resume(struct device *dev)
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static int platform_legacy_resume(struct device *dev)
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{
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int ret = 0;
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@ -606,15 +610,291 @@ static int platform_resume(struct device *dev)
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return ret;
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}
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static int platform_pm_prepare(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm && drv->pm->prepare)
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ret = drv->pm->prepare(dev);
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return ret;
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}
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static void platform_pm_complete(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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if (drv && drv->pm && drv->pm->complete)
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drv->pm->complete(dev);
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}
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#ifdef CONFIG_SUSPEND
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static int platform_pm_suspend(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm) {
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if (drv->pm->suspend)
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ret = drv->pm->suspend(dev);
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} else {
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ret = platform_legacy_suspend(dev, PMSG_SUSPEND);
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}
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return ret;
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}
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static int platform_pm_suspend_noirq(struct device *dev)
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{
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struct platform_driver *pdrv;
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int ret = 0;
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if (!dev->driver)
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return 0;
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pdrv = to_platform_driver(dev->driver);
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if (pdrv->pm) {
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if (pdrv->pm->suspend_noirq)
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ret = pdrv->pm->suspend_noirq(dev);
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} else {
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ret = platform_legacy_suspend_late(dev, PMSG_SUSPEND);
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}
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return ret;
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}
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static int platform_pm_resume(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm) {
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if (drv->pm->resume)
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ret = drv->pm->resume(dev);
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} else {
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ret = platform_legacy_resume(dev);
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}
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return ret;
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}
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static int platform_pm_resume_noirq(struct device *dev)
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{
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struct platform_driver *pdrv;
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int ret = 0;
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if (!dev->driver)
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return 0;
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pdrv = to_platform_driver(dev->driver);
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if (pdrv->pm) {
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if (pdrv->pm->resume_noirq)
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ret = pdrv->pm->resume_noirq(dev);
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} else {
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ret = platform_legacy_resume_early(dev);
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}
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return ret;
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}
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#else /* !CONFIG_SUSPEND */
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#define platform_pm_suspend NULL
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#define platform_pm_resume NULL
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#define platform_pm_suspend_noirq NULL
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#define platform_pm_resume_noirq NULL
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#endif /* !CONFIG_SUSPEND */
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#ifdef CONFIG_HIBERNATION
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static int platform_pm_freeze(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (!drv)
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return 0;
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if (drv->pm) {
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if (drv->pm->freeze)
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ret = drv->pm->freeze(dev);
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} else {
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ret = platform_legacy_suspend(dev, PMSG_FREEZE);
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}
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return ret;
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}
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static int platform_pm_freeze_noirq(struct device *dev)
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{
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struct platform_driver *pdrv;
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int ret = 0;
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if (!dev->driver)
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return 0;
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pdrv = to_platform_driver(dev->driver);
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if (pdrv->pm) {
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if (pdrv->pm->freeze_noirq)
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ret = pdrv->pm->freeze_noirq(dev);
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} else {
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ret = platform_legacy_suspend_late(dev, PMSG_FREEZE);
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}
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return ret;
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}
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static int platform_pm_thaw(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm) {
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if (drv->pm->thaw)
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ret = drv->pm->thaw(dev);
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} else {
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ret = platform_legacy_resume(dev);
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}
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return ret;
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}
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static int platform_pm_thaw_noirq(struct device *dev)
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{
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struct platform_driver *pdrv;
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int ret = 0;
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if (!dev->driver)
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return 0;
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pdrv = to_platform_driver(dev->driver);
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if (pdrv->pm) {
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if (pdrv->pm->thaw_noirq)
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ret = pdrv->pm->thaw_noirq(dev);
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} else {
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ret = platform_legacy_resume_early(dev);
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}
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return ret;
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}
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static int platform_pm_poweroff(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm) {
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if (drv->pm->poweroff)
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ret = drv->pm->poweroff(dev);
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} else {
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ret = platform_legacy_suspend(dev, PMSG_HIBERNATE);
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}
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return ret;
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}
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static int platform_pm_poweroff_noirq(struct device *dev)
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{
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struct platform_driver *pdrv;
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int ret = 0;
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if (!dev->driver)
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return 0;
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pdrv = to_platform_driver(dev->driver);
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if (pdrv->pm) {
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if (pdrv->pm->poweroff_noirq)
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ret = pdrv->pm->poweroff_noirq(dev);
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} else {
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ret = platform_legacy_suspend_late(dev, PMSG_HIBERNATE);
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}
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return ret;
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}
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static int platform_pm_restore(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm) {
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if (drv->pm->restore)
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ret = drv->pm->restore(dev);
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} else {
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ret = platform_legacy_resume(dev);
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}
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return ret;
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}
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static int platform_pm_restore_noirq(struct device *dev)
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{
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struct platform_driver *pdrv;
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int ret = 0;
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if (!dev->driver)
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return 0;
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pdrv = to_platform_driver(dev->driver);
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if (pdrv->pm) {
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if (pdrv->pm->restore_noirq)
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ret = pdrv->pm->restore_noirq(dev);
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} else {
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ret = platform_legacy_resume_early(dev);
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}
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return ret;
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}
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#else /* !CONFIG_HIBERNATION */
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#define platform_pm_freeze NULL
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#define platform_pm_thaw NULL
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#define platform_pm_poweroff NULL
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#define platform_pm_restore NULL
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#define platform_pm_freeze_noirq NULL
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#define platform_pm_thaw_noirq NULL
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#define platform_pm_poweroff_noirq NULL
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#define platform_pm_restore_noirq NULL
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#endif /* !CONFIG_HIBERNATION */
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struct pm_ext_ops platform_pm_ops = {
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.base = {
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.prepare = platform_pm_prepare,
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.complete = platform_pm_complete,
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.suspend = platform_pm_suspend,
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.resume = platform_pm_resume,
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.freeze = platform_pm_freeze,
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.thaw = platform_pm_thaw,
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.poweroff = platform_pm_poweroff,
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.restore = platform_pm_restore,
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},
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.suspend_noirq = platform_pm_suspend_noirq,
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.resume_noirq = platform_pm_resume_noirq,
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.freeze_noirq = platform_pm_freeze_noirq,
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.thaw_noirq = platform_pm_thaw_noirq,
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.poweroff_noirq = platform_pm_poweroff_noirq,
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.restore_noirq = platform_pm_restore_noirq,
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};
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#define PLATFORM_PM_OPS_PTR &platform_pm_ops
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#else /* !CONFIG_PM_SLEEP */
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#define PLATFORM_PM_OPS_PTR NULL
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#endif /* !CONFIG_PM_SLEEP */
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struct bus_type platform_bus_type = {
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.name = "platform",
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.dev_attrs = platform_dev_attrs,
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.match = platform_match,
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.uevent = platform_uevent,
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.suspend = platform_suspend,
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.suspend_late = platform_suspend_late,
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.resume_early = platform_resume_early,
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.resume = platform_resume,
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.pm = PLATFORM_PM_OPS_PTR,
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};
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EXPORT_SYMBOL_GPL(platform_bus_type);
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@ -53,6 +53,7 @@ struct platform_driver {
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int (*suspend_late)(struct platform_device *, pm_message_t state);
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int (*resume_early)(struct platform_device *);
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int (*resume)(struct platform_device *);
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struct pm_ext_ops *pm;
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struct device_driver driver;
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};
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