Commit 8652b00f authored by Shaohua Li's avatar Shaohua Li Committed by Len Brown
Browse files

dock: add 'type' sysfs file 



add a sysfs file to present dock type. Suggested by Holger.

Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 61b83695

drivers/acpi/dock.c

+25 −0
Original line number Diff line number Diff line
@@ -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);