diff options
| author |   Shaohua Li <shaohua.li@intel.com> | 2008-08-28 10:07:45 +0800 |
|---|---|---|
| committer |   Len Brown <len.brown@intel.com> | 2008-09-23 23:48:59 -0400 |
| commit | 8652b00fd6416773f113dab3dfa0d4509def825b (patch) | |
| tree | be80ebd30d9b47639a2e7b74f560a74db207b01d /drivers/acpi/dock.c | |
| parent | dock: fix for ATA bay in a dock station (diff) | |
| download | linux-dev-8652b00fd6416773f113dab3dfa0d4509def825b.tar.xz linux-dev-8652b00fd6416773f113dab3dfa0d4509def825b.zip | |
dock: add 'type' sysfs file
add a sysfs file to present dock type. Suggested by Holger.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/dock.c')
| -rw-r--r-- | drivers/acpi/dock.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index c877cc526002..b7d15818215c 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -911,6 +911,26 @@ static ssize_t show_dock_uid(struct device *dev, } static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL); +static ssize_t show_dock_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dock_station *dock_station = *((struct dock_station **) + dev->platform_data); + char *type; + + if (dock_station->flags & DOCK_IS_DOCK) + type = "dock_station"; + else if (dock_station->flags & DOCK_IS_ATA) + type = "ata_bay"; + else if (dock_station->flags & DOCK_IS_BAT) + type = "battery_bay"; + else + type = "unknown"; + + return snprintf(buf, PAGE_SIZE, "%s\n", type); +} +static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL); + /** * dock_add - add a new dock station * @handle: the dock station handle @@ -999,6 +1019,9 @@ static int dock_add(acpi_handle handle) dock_station = NULL; return ret; } + ret = device_create_file(&dock_device->dev, &dev_attr_type); + if (ret) + printk(KERN_ERR"Error %d adding sysfs file\n", ret); /* Find dependent devices */ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, @@ -1020,6 +1043,7 @@ static int dock_add(acpi_handle handle) return 0; dock_add_err_unregister: + device_remove_file(&dock_device->dev, &dev_attr_type); device_remove_file(&dock_device->dev, &dev_attr_docked); device_remove_file(&dock_device->dev, &dev_attr_undock); device_remove_file(&dock_device->dev, &dev_attr_uid); @@ -1047,6 +1071,7 @@ static int dock_remove(struct dock_station *dock_station) kfree(dd); /* cleanup sysfs */ + device_remove_file(&dock_device->dev, &dev_attr_type); device_remove_file(&dock_device->dev, &dev_attr_docked); device_remove_file(&dock_device->dev, &dev_attr_undock); device_remove_file(&dock_device->dev, &dev_attr_uid); |