admin-guide/laptops/thinkpad-acpi.rst

87 is a new sysfs-based interface which is not complete yet.
93 all new functionality will be implemented on the sysfs interface.
95 The sysfs interface tries to blend in the generic Linux sysfs subsystems
101 Notes about the sysfs interface
105 to the sysfs interfaces will be enforced, as will correctness in the
106 thinkpad-acpi's implementation of sysfs interfaces.
108 Also, any bugs in the thinkpad-acpi sysfs driver code or in the
109 thinkpad-acpi's implementation of the sysfs interfaces will be fixed for
114 Applications interfacing to the thinkpad-acpi sysfs interfaces must
115 follow all sysfs guidelines and correctly process all errors (the sysfs
117 close operations to the sysfs inodes must also be properly implemented.
119 The version of thinkpad-acpi's sysfs interface is exported by the driver
122 Sysfs driver attributes are on the driver's sysfs attribute space,
126 Sysfs device attributes are on the thinkpad_acpi device sysfs attribute
129 Sysfs device attributes for the sensors and fan are on the
130 thinkpad_hwmon device's sysfs attribute space, but you should locate it
132 better yet, through libsensors. For 4.14+ sysfs attributes were moved to the
141 sysfs driver attribute: version
146 Sysfs interface version
149 sysfs driver attribute: interface_version
151 Version of the thinkpad-acpi sysfs interface, as an unsigned long
161 The sysfs interface version changelog for the driver can be found at the
162 end of this document.  Changes to the sysfs interface done by the kernel
166 Changes to the thinkpad-acpi sysfs interface are only considered
179 feature is not available in sysfs).
187 sysfs device attribute: hotkey_*
255 sysfs notes
600 notifications for OSD, use the sysfs backlight class event support.
615 sysfs device attribute: bluetooth_enable (deprecated)
617 sysfs rfkill class: switch "tpacpi_bluetooth_sw"
633 Sysfs notes
707 sysfs attributes: as per LED class, for the "tpacpi::thinklight" LED
719 sysfs notes
722 The ThinkLight sysfs interface is documented by the LED class
726 Due to limitations in the sysfs LED class, if the status of the ThinkLight
728 It is impossible to know if the status returned through sysfs is valid.
736 sysfs device attribute: cmos_command
772 sysfs attributes: as per LED class, see below for names
822 sysfs notes
825 The ThinkPad LED sysfs interface is described in detail by the LED class
835 Due to limitations in the sysfs LED class, if the status of the LED
849 made available through the sysfs interface.  If you have a dock and you
890 sysfs device attributes: (hwmon "thinkpad") temp*_input
959 Sysfs notes
1002 sysfs backlight device "thinkpad_screen"
1055 Sysfs notes
1058 The interface is implemented through the backlight sysfs class, which is
1204 sysfs device attributes: (hwmon "thinkpad") fan1_input, pwm1, pwm1_enable, fan2_input
1206 sysfs hwmon driver attributes: fan_watchdog
1276 commands, or the hwmon fan control sysfs interface.
1309 is incomplete, and not available through the sysfs interface.
1317 Sysfs notes
1320 The sysfs interface follows the hwmon subsystem guidelines for the most
1323 Writes to any of the sysfs attributes may return the EINVAL error if
1376 sysfs device attribute: wwan_enable (deprecated)
1378 sysfs rfkill class: switch "tpacpi_wwan_sw"
1397 Sysfs notes
1441 sysfs: dytc_lapmode
1449 The property is read-only. If the platform doesn't have support the sysfs
1460 sysfs rfkill class: switch "tpacpi_uwb_sw"
1465 Sysfs notes
1475 sysfs: keyboard_lang
1481 is set as "english". Hence using this sysfs, user can set the correct keyboard
1488 Text corresponding to keyboard layout to be set in sysfs are: be(Belgian),
1497 sysfs: wwan_antenna_type
1511 The property is read-only. If the platform doesn't have support the sysfs
1517 sysfs device attribute: adaptive_kbd_mode
1519 This sysfs attribute controls the keyboard "face" that will be shown on the
1536 sysfs attributes:
1548 Documentation/ABI/testing/sysfs-class-power.
1595 at runtime through sysfs, using the driver attribute debug_level.  The
1607 Sysfs interface changelog
1611 0x000100:	Initial sysfs support, as a single platform driver and
1646 		the LED sysfs class anymore.
1659 0x030000:	Thermal and fan sysfs attributes were moved to the hwmon