diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2008-01-17 15:51:21 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-02-01 23:20:20 -0500 |
| commit | 207339398ecb0835331c748612898dad2a09fdec (patch) | |
| tree | 21baf89f158bfbeeac960f5e7b92cfe332b0ccde | |
| parent | 702ed512de9c8a67a69a981c73b7337c2131f198 (diff) | |
| download | linux-207339398ecb0835331c748612898dad2a09fdec.tar.gz linux-207339398ecb0835331c748612898dad2a09fdec.tar.bz2 linux-207339398ecb0835331c748612898dad2a09fdec.zip | |
ACPI: attach thermal zone info
Intel menlow driver needs to get the pointer of themal_zone_device
structure of an ACPI thermal zone.
Attach this to each ACPI thermal zone device object.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/acpi/bus.c | 25 | ||||
| -rw-r--r-- | drivers/acpi/thermal.c | 11 | ||||
| -rw-r--r-- | include/acpi/acpi_bus.h | 2 |
3 files changed, 38 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 1b4cf984b081..8df325dafe0f 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -122,6 +122,31 @@ int acpi_bus_get_status(struct acpi_device *device) EXPORT_SYMBOL(acpi_bus_get_status); +void acpi_bus_private_data_handler(acpi_handle handle, + u32 function, void *context) +{ + return; +} +EXPORT_SYMBOL(acpi_bus_private_data_handler); + +int acpi_bus_get_private_data(acpi_handle handle, void **data) +{ + acpi_status status = AE_OK; + + if (!*data) + return -EINVAL; + + status = acpi_get_data(handle, acpi_bus_private_data_handler, data); + if (ACPI_FAILURE(status) || !*data) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", + handle)); + return -ENODEV; + } + + return 0; +} +EXPORT_SYMBOL(acpi_bus_get_private_data); + /* -------------------------------------------------------------------------- Power Management -------------------------------------------------------------------------- */ diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index d317da5c6e9c..740036355722 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -1101,6 +1101,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) { int trips = 0; int result; + acpi_status status; int i; if (tz->trips.critical.flags.valid) @@ -1129,6 +1130,15 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) if (result) return result; + status = acpi_attach_data(tz->device->handle, + acpi_bus_private_data_handler, + tz->thermal_zone); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Error attaching device data\n")); + return -ENODEV; + } + tz->tz_enabled = 1; printk(KERN_INFO PREFIX "%s is registered as thermal_zone%d\n", @@ -1142,6 +1152,7 @@ static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz) sysfs_remove_link(&tz->thermal_zone->device.kobj, "device"); thermal_zone_device_unregister(tz->thermal_zone); tz->thermal_zone = NULL; + acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler); } diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index fb7171b1bd22..504af20b10c1 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -321,6 +321,8 @@ struct acpi_bus_event { extern struct kobject *acpi_kobj; extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); +void acpi_bus_private_data_handler(acpi_handle, u32, void *); +int acpi_bus_get_private_data(acpi_handle, void **); /* * External Functions */ |