admin-guide/laptops/thinkpad-acpi.rst

88 is a new sysfs-based interface which is not complete yet.
94 all new functionality will be implemented on the sysfs interface.
96 The sysfs interface tries to blend in the generic Linux sysfs subsystems
102 Notes about the sysfs interface
106 to the sysfs interfaces will be enforced, as will correctness in the
107 thinkpad-acpi's implementation of sysfs interfaces.
109 Also, any bugs in the thinkpad-acpi sysfs driver code or in the
110 thinkpad-acpi's implementation of the sysfs interfaces will be fixed for
115 Applications interfacing to the thinkpad-acpi sysfs interfaces must
116 follow all sysfs guidelines and correctly process all errors (the sysfs
118 close operations to the sysfs inodes must also be properly implemented.
120 The version of thinkpad-acpi's sysfs interface is exported by the driver
123 Sysfs driver attributes are on the driver's sysfs attribute space,
127 Sysfs device attributes are on the thinkpad_acpi device sysfs attribute
130 Sysfs device attributes for the sensors and fan are on the
131 thinkpad_hwmon device's sysfs attribute space, but you should locate it
133 better yet, through libsensors. For 4.14+ sysfs attributes were moved to the
142 sysfs driver attribute: version
147 Sysfs interface version
150 sysfs driver attribute: interface_version
152 Version of the thinkpad-acpi sysfs interface, as an unsigned long
162 The sysfs interface version changelog for the driver can be found at the
163 end of this document.  Changes to the sysfs interface done by the kernel
167 Changes to the thinkpad-acpi sysfs interface are only considered
180 feature is not available in sysfs).
188 sysfs device attribute: hotkey_*
256 sysfs notes
606 notifications for OSD, use the sysfs backlight class event support.
621 sysfs device attribute: bluetooth_enable (deprecated)
623 sysfs rfkill class: switch "tpacpi_bluetooth_sw"
639 Sysfs notes
713 sysfs attributes: as per LED class, for the "tpacpi::thinklight" LED
725 sysfs notes
728 The ThinkLight sysfs interface is documented by the LED class
732 Due to limitations in the sysfs LED class, if the status of the ThinkLight
734 It is impossible to know if the status returned through sysfs is valid.
742 sysfs device attribute: cmos_command
778 sysfs attributes: as per LED class, see below for names
828 sysfs notes
831 The ThinkPad LED sysfs interface is described in detail by the LED class
841 Due to limitations in the sysfs LED class, if the status of the LED
855 made available through the sysfs interface.  If you have a dock and you
896 sysfs device attributes: (hwmon "thinkpad") temp*_input
965 Sysfs notes
1008 sysfs backlight device "thinkpad_screen"
1061 Sysfs notes
1064 The interface is implemented through the backlight sysfs class, which is
1210 sysfs device attributes: (hwmon "thinkpad") fan1_input, pwm1, pwm1_enable, fan2_input
1212 sysfs hwmon driver attributes: fan_watchdog
1282 commands, or the hwmon fan control sysfs interface.
1315 is incomplete, and not available through the sysfs interface.
1323 Sysfs notes
1326 The sysfs interface follows the hwmon subsystem guidelines for the most
1329 Writes to any of the sysfs attributes may return the EINVAL error if
1382 sysfs device attribute: wwan_enable (deprecated)
1384 sysfs rfkill class: switch "tpacpi_wwan_sw"
1403 Sysfs notes
1447 sysfs: dytc_lapmode
1455 The property is read-only. If the platform doesn't have support the sysfs
1466 sysfs rfkill class: switch "tpacpi_uwb_sw"
1471 Sysfs notes
1481 sysfs: keyboard_lang
1487 is set as "english". Hence using this sysfs, user can set the correct keyboard
1494 Text corresponding to keyboard layout to be set in sysfs are: be(Belgian),
1503 sysfs: wwan_antenna_type
1517 The property is read-only. If the platform doesn't have support the sysfs
1523 sysfs: auxmac
1542 sysfs device attribute: adaptive_kbd_mode
1544 This sysfs attribute controls the keyboard "face" that will be shown on the
1561 sysfs attributes:
1573 Documentation/ABI/testing/sysfs-class-power.
1620 at runtime through sysfs, using the driver attribute debug_level.  The
1632 Sysfs interface changelog
1636 0x000100:	Initial sysfs support, as a single platform driver and
1671 		the LED sysfs class anymore.
1684 0x030000:	Thermal and fan sysfs attributes were moved to the hwmon