On Thu, 10 Apr 2008 00:53:00 -0300 Henrique de Moraes Holschuh wrote: > Add a sysfs led class interface to the thinklight (light subdriver). > > Signed-off-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx> > Cc: Richard Purdie <rpurdie@xxxxxxxxx> > --- > Documentation/laptops/thinkpad-acpi.txt | 25 +++++++++++--- > drivers/misc/thinkpad_acpi.c | 57 ++++++++++++++++++++++++++++++- > 2 files changed, 76 insertions(+), 6 deletions(-) > > diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt > index 0f403ff..22c1ac4 100644 > --- a/Documentation/laptops/thinkpad-acpi.txt > +++ b/Documentation/laptops/thinkpad-acpi.txt > @@ -692,16 +692,31 @@ while others are still having problems. For more information: > > https://bugs.freedesktop.org/show_bug.cgi?id=2000 > > -ThinkLight control -- /proc/acpi/ibm/light > ------------------------------------------- > +ThinkLight control > +------------------ > + > +procfs: /proc/acpi/ibm/light > +sysfs attributes: as per led class, for the "tpacpi::thinklight" led > + Well, I would really prefer that we call LEDs "LED" instead of "led" in user documentation. > +procfs notes: > > -The current status of the ThinkLight can be found in this file. A few > -models which do not make the status available will show it as > -"unknown". The available commands are: > +The ThinkLight status can be read and set through the procfs interface. A > +few models which do not make the status available will show the ThinkLight > +status as "unknown". The available commands are: > > echo on > /proc/acpi/ibm/light > echo off > /proc/acpi/ibm/light > > +sysfs notes: > + > +The ThinkLight sysfs interface is documented by the led class > +documentation, in Documentation/leds-class.txt. The ThinkLight led name > +is "tpacpi::thinklight". > + > +Due to limitations in the sysfs led class, if the status of the thinklight > +cannot be read or if it is unknown, thinkpad-acpi will report it as "off". > +It is impossible to know if the status returned through sysfs is valid. > + > Docking / undocking -- /proc/acpi/ibm/dock > ------------------------------------------ --- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
