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path: root/drivers/misc/thinkpad_acpi.h
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2007-05-31ACPI: thinkpad-acpi: do not use named sysfs groupsHenrique de Moraes Holschuh
The initial version of the thinkpad-acpi sysfs interface (not yet released in any stable mainline kernel) made liberal use of named sysfs groups, in order to get the attributes more organized. This proved to be a really bad design decision. Maybe if attribute groups were as flexible as a real directory, and if binary attributes were not second-class citizens, the idea of subdirs and named groups would not have been so bad. This patch makes all the thinkpad-acpi sysfs groups anonymous (thus removing the subdirs), adds the former group names as a prefix (so that hotkey/enable becomes hotkey_enable for example), and updates the documentation. These changes will make the thinkpad-acpi sysfs ABI a lot easier to maintain. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-28thinkpad-acpi: make drivers/misc/thinkpad_acpi:fan_mutex staticAdrian Bunk
This patch makes the needlessly global fan_mutex static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-28ACPI: thinkpad-acpi: add sysfs support to wan and bluetooth subdriversHenrique de Moraes Holschuh
Add support to sysfs to the wan and bluetooth subdrivers. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-28ACPI: thinkpad-acpi: add sysfs support to hotkey subdriverHenrique de Moraes Holschuh
Add the hotkey sysfs support. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-28ACPI: thinkpad-acpi: add a fan-control feature master toggleHenrique de Moraes Holschuh
Len Brown considers that an active by default fan control interface in laptops may be too close to giving users enough rope. There is a good chance he is quite correct on this, especially if someone decides to use that interface in applets and users are not aware of its risks. This patch adds a master switch to thinkpad-acpi that enables or disables the entire fan-control feature as a module parameter: "fan_control". It defaults to disabled. Set it to non-zero to enable fan control. Also, the patch removes the expermiental status from fan control, since it is stable enough to not be called experimental, and the master switch makes it safe enough to do so. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: update brightness sysfs interface supportHenrique de Moraes Holschuh
Update the brightness sysfs interface (done through the backlight class) to be in line with the rest of the thinkpad-acpi driver. This renames the incorrect, un-obvious, and clash-prone name of "ibm" for the backlight device to a much more fitting and descriptive "thinkpad_screen". This is something I wanted to do for quite a while... Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: add sysfs support to fan subdriverHenrique de Moraes Holschuh
Export sysfs attributes to monitor and control the internal thinkpad fan (some thinkpads have more than one fan, but thinkpad-acpi doesn't support the second fan yet). The sysfs interface follows the hwmon design guide for fan devices. Also, fix some stray "thermal" files in the fan procfs description that have been there forever, and officially support "full-speed" as the name for the PWM-disabled state of the fan controller to keep it in line with the hwmon interface. It is much better a name for that mode than the unobvious "disengaged" anyway. Change the procfs interface to also accept full-speed as a fan level, but still report it as disengaged for backwards compatibility. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: add sysfs support to the thermal subdriverHenrique de Moraes Holschuh
Export thinkpad thermal sensors to sysfs, following the hwmon specification for thermal monitoring sensors. ThinkPad thermal monitoring is done by the EC. Sensors can show up or disappear at runtime when they are inside hotswappable hardware, such as batteries. Sensors that are not available return -ENXIO when accessed. Up to 16 thermal sensors are supported on new firmware (but nobody has reported a ThinkPad with more than 12 sensors so far), and 8 sensors are supported on older firmware. Thermal sensor mapping is model-specific. Precision varies, it is 1 degree Celcius on new ThinkPads, but higher on some older models. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: protect fan and hotkey data structuresHenrique de Moraes Holschuh
Add proper mutex locking to some data structures access subject to races due to concurrent access of driver functions on the hotkey and fan subdrivers. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: add infrastructure for the sysfs device attributesHenrique de Moraes Holschuh
Add infrastructure to deal with sysfs attributes and grouping, and helpers for common sysfs parsing. Switch driver attributes to use them. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: driver sysfs conversionHenrique de Moraes Holschuh
Add the sysfs attributes for the platform driver. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-25ACPI: thinkpad-acpi: register with the device modelHenrique de Moraes Holschuh
Register thinkpad-acpi platform driver and platform device for the device model. Also register the platform device with the hwmon class. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: cleanup thermal subdriver for sysfs conversionHenrique de Moraes Holschuh
Clean-up the thermal subdriver for sysfs conversion. Make thermal_get_* reentrancy-safe while at it, and add the missing thermal_read_mode variable to the header file. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: clean up CMOS commands subdriverHenrique de Moraes Holschuh
Some ThinkPad CMOS commands subdriver cleanups, and also rename/promote cmos_eval to a ACPI helper function, as it is used by many other subdrivers. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: cleanup video subdriverHenrique de Moraes Holschuh
Cleanup video subdriver for sysfs conversion, and properly check result status of acpi_evalf. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: cleanup bluetooth and wan for sysfs conversionHenrique de Moraes Holschuh
Prepare bluetooth and wan driver code to be more easily hooked into sysfs helpers, by separating the procfs logic from the device attribute handling. These changes also remove the entries from procfs on notebooks without the bluetooth/wan hardware installed. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: mark acpi helper functions __must_checkHenrique de Moraes Holschuh
Mark acpi_evalf and friends __must_check. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: prepare for device model conversionHenrique de Moraes Holschuh
Prepare the thinkpad-acpi driver for the conversion to the device model, by renaming variables and doing other glue work that shall make the later patches much cleaner. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: use bitfields for module flagsHenrique de Moraes Holschuh
Use a bitfield to hold boolean module-wide flags, to conserve some memory. It is easy and it is clean, so we do it just for the heck of it even if it saves very little space. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: use bitfields to hold subdriver flagsHenrique de Moraes Holschuh
Save some memory by using bitfields to hold boolean flags for the subdrivers. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: improve thinkpad detectionHenrique de Moraes Holschuh
Improve the detection of ThinkPads, so as to reduce the chances of false positives. Since this could potentially add false negatives on the very old models, add a module parameter to force the detection of a thinkpad. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: uncouple subdriver init from ibms structHenrique de Moraes Holschuh
Move the .init method from ibms struct to another struct, and use a list head to control which subdrivers have been activated. This allows us to have the subdriver init methods marked __init, saving quite a lot of .text size, and even a bit of .data size as some data can now be made __initdata. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: add subdriver debug statementsHenrique de Moraes Holschuh
Add debug messages to the subdriver initialization and exit code. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: clean up probing and move init to subdriversHenrique de Moraes Holschuh
Move most of the probing code to its own function, and most of the subdriver-specific init code into subdriver init functions. This allows us to not define pci_handle unless the dock subdriver is enabled, as well. This patch causes a minor userland interface change: if a subdriver doesn't detect a capability, /proc entries for it are not created anymore (as opposed to a /proc entry that just returned "unsupported"). Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: add debug modeHenrique de Moraes Holschuh
Add a debug mode parameter and verbose debug mode Kconfig option. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: rename thinkpad constantsHenrique de Moraes Holschuh
Rename all IBMACPI_ constants, now that we are not called ibm-acpi anymore. Driver-specific constants are now prefixed TPACPI_, ThinkPad firmware specific ones are now prefixed TP_CMOS_, TP_ACPI_, or TP_EC_. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: rename module glueHenrique de Moraes Holschuh
Rename module init and exit functions, now that we are not called ibm-acpi anymore. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-21ACPI: thinkpad-acpi: rename register_ibmacpi_subdriverHenrique de Moraes Holschuh
Rename register_ibmacpi_subdriver to register_tpacpi_subdriver, as we are not called ibmacpi anymore. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-30ACPI: thinkpad-acpi: cleanup after renameHenrique de Moraes Holschuh
Cleanup documentation, driver strings and other misc stuff, now that the driver is named "thinkpad-acpi". Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-30ACPI: thinkpad-acpi: cleanup Kconfig for thinkpad-acpiHenrique de Moraes Holschuh
Since ibm-acpi was renamed to thinkpad-acpi, rename and update its Kconfig entries and Kconfig-related symbols accordingly. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-03-30ACPI: ibm-acpi: rename driver to thinkpad-acpiHenrique de Moraes Holschuh
Rename the ibm-acpi driver to thinkpad-acpi. ThinkPads are not even made by IBM anymore, so it is high time to rename the driver... The name thinkpad-acpi was used sometime ago by a thinkpad-specific hotkey driver by Erik Rigtorp, around the 2.6.8-2.6.10 time frame. The driver apparently never got merged into mainline (it did make some trips through -mm). ibm-acpi was merged soon after, making its debut in 2.6.10. The reuse of the thinkpad-acpi name shouldn't be a problem as far as user confusion goes, as Erik's thinkpad-acpi apparently didn't get widespread use in the Linux ThinkPad community and most hits for thinkpad-acpi in google point to ibm-acpi anyway. Erik, if you read this, please consider the reuse of the thinkpad-acpi name as a compliment to your effort to make ThinkPads more useful to all of us. Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>