[PATCH v12 15/17] HID: asus: document ROG XG Mobile sysfs attributes

[Denis Benato <denis.benato@linux.dev>]

The driver publishes the station's model, serial, mainboard identifier,
part number, firmware version and hardware generation as read-only
sysfs files. Document each file: when it is created, what a read
returns, and when that read is an empty line.

Signed-off-by: Denis Benato <denis.benato@linux.dev>
---
 .../ABI/testing/sysfs-driver-hid-asus         | 95 +++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-driver-hid-asus

diff --git a/Documentation/ABI/testing/sysfs-driver-hid-asus b/Documentation/ABI/testing/sysfs-driver-hid-asus
new file mode 100644
index 000000000000..30e0d17d4cec
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-hid-asus
@@ -0,0 +1,95 @@
+What:		/sys/bus/hid/drivers/asus/<dev>/xgm_model
+Date:		October 2026
+Contact:	linux-input@vger.kernel.org
+Description:
+		Model of the connected ASUS ROG XG Mobile station, as
+		reported by the station. An example is "GC33Y".
+
+		The file is created only for a supported station, one whose
+		model name starts with GC31, GC32 or GC33, and only while that
+		station is bound.
+		The value is one line and is never empty while the file
+		exists.
+
+		Access: Read only
+		Valid values: a single line of text
+
+What:		/sys/bus/hid/drivers/asus/<dev>/xgm_serial
+Date:		October 2026
+Contact:	linux-input@vger.kernel.org
+Description:
+		Serial number of the connected ASUS ROG XG Mobile station,
+		as reported by the station.
+
+		The file is created only for a supported station, one whose
+		model name starts with GC31, GC32 or GC33, and only while that
+		station is bound.
+		The read is an empty line when the station did not report a
+		serial number.
+
+		Access: Read only
+		Valid values: a single line of text
+
+What:		/sys/bus/hid/drivers/asus/<dev>/xgm_mainboard
+Date:		October 2026
+Contact:	linux-input@vger.kernel.org
+Description:
+		Mainboard identifier of the connected ASUS ROG XG Mobile
+		station, as reported by the station.
+
+		The file is created only for a supported station, one whose
+		model name starts with GC31, GC32 or GC33, and only while that
+		station is bound.
+		The read is an empty line when the station did not report a
+		mainboard identifier.
+
+		Access: Read only
+		Valid values: a single line of text
+
+What:		/sys/bus/hid/drivers/asus/<dev>/xgm_part_number
+Date:		October 2026
+Contact:	linux-input@vger.kernel.org
+Description:
+		Part number of the connected ASUS ROG XG Mobile station, as
+		reported by the station.
+
+		The file is created only for a supported station, one whose
+		model name starts with GC31, GC32 or GC33, and only while that
+		station is bound.
+		The read is an empty line when the station did not report a
+		part number.
+
+		Access: Read only
+		Valid values: a single line of text
+
+What:		/sys/bus/hid/drivers/asus/<dev>/xgm_firmware_version
+Date:		October 2026
+Contact:	linux-input@vger.kernel.org
+Description:
+		Firmware version of the connected ASUS ROG XG Mobile
+		station, as reported by the station.
+
+		The file is created only for a supported station, one whose
+		model name starts with GC31, GC32 or GC33, and only while that
+		station is bound.
+		The read is an empty line when the version query failed or
+		the station did not report a firmware version.
+
+		Access: Read only
+		Valid values: a single line of text
+
+What:		/sys/bus/hid/drivers/asus/<dev>/xgm_generation
+Date:		October 2026
+Contact:	linux-input@vger.kernel.org
+Description:
+		Hardware generation of the connected ASUS ROG XG Mobile
+		station, as reported by the station.
+
+		The file is created only for a supported station, one whose
+		model name starts with GC31, GC32 or GC33, and only while that
+		station is bound.
+		The read is an empty line when the version query failed or
+		the station did not report a generation.
+
+		Access: Read only
+		Valid values: a single line of text
-- 
2.47.3