diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-04-07 18:09:15 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-04-07 18:09:15 +1000 |
| commit | a32aaf14513da776556ad9995de8d83cd76ae60a (patch) | |
| tree | 4c78e27fe922a18cff088e41e0fe0c615a870cde /arch/powerpc/kernel/vio.c | |
| parent | 8260cf6f40014860cb857f5245194900dd6c9b94 (diff) | |
powerpc/vio: Add power management support
Adds support for suspend/resume for VIO devices. This is needed for
support for HMC initiated hibernation.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/vio.c')
| -rw-r--r-- | arch/powerpc/kernel/vio.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 2a3428bef83a..b8e311d64ad5 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -1381,6 +1381,29 @@ static int vio_hotplug(struct device *dev, struct kobj_uevent_env *env) return 0; } +static int vio_pm_suspend(struct device *dev) +{ + const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; + + if (pm && pm->suspend) + return pm->suspend(dev); + return 0; +} + +static int vio_pm_resume(struct device *dev) +{ + const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; + + if (pm && pm->resume) + return pm->resume(dev); + return 0; +} + +const struct dev_pm_ops vio_dev_pm_ops = { + .suspend = vio_pm_suspend, + .resume = vio_pm_resume, +}; + static struct bus_type vio_bus_type = { .name = "vio", .dev_attrs = vio_dev_attrs, @@ -1388,6 +1411,7 @@ static struct bus_type vio_bus_type = { .match = vio_bus_match, .probe = vio_bus_probe, .remove = vio_bus_remove, + .pm = &vio_dev_pm_ops, }; /** |