en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-devices-physical_location#6423d295 driver core: Add sysfs support for physical location of a deviceWhen ACPI table includes _PLD fields for a device, create a newdirectory (physical_location) in sysfs to share _PLD fields.Currently without PLD information, when there are multiple of samedevices, it is hard to distinguish which device corresponds to whichphysical device at which location. For example, when there are two TypeC connectors, it is hard to find out which connector corresponds to theType C port on the left panel versus the Type C port on the right panel.With PLD information provided, we can determine which specific device atwhich location is doing what._PLD output includes much more fields, but only generic fields are addedand exposed to sysfs, so that non-ACPI devices can also support it inthe future. The minimal generic fields needed for locating a device arethe following.- panel- vertical_position- horizontal_position- dock- lidSigned-off-by: Won Chung <wonchung@google.com>Link: https://lore.kernel.org/r/20220314195458.271430-1-wonchung@google.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-devices-physical_location Mon, 14 Mar 2022 19:54:58 +0000 Won Chung <wonchung@google.com>