linux-toradex.git/drivers/hwmon/it87.c, branch v2.6.34-rc4

hwmon: (it87) Validate auto pwm settings

2010-03-05T21:17:21+00:00

Before switching to automatic fan control mode, make sure that all the
trip points make sense. Otherwise, the control loop could lead to
weird fan behavior.

Signed-off-by: Jean Delvare

hwmon: (it87) Add support for old automatic fan speed control

2010-03-05T21:17:21+00:00

Add support for the automatic fan speed control interface as
implemented by IT8705F chips up to revision F and IT8712F chips up to
revision G. This implementation fits very well in our standard sysfs
interface.

I implemented the old and not the new interface because the only chip
I have at hand is an old one, and the new interface is more difficult
to map to the standard sysfs interface. Adding support later should be
possible though, if someone with a supported chip is interested.

Signed-off-by: Jean Delvare

hwmon: (it87) Use strict_strtol instead of simple_strtol

2010-03-05T21:17:19+00:00

For consistency and robustness, use strict_strtol instead of
simple_strtol.

Signed-off-by: Jean Delvare

hwmon: (it87) Fix many checkpatch errors and warnings

2010-03-05T21:17:18+00:00

Fix 20 errors and 11 warnings reported by the checkpatch script. The
remainining errors would require more work. The remaining warnings
will be addressed later.

Signed-off-by: Jean Delvare

hwmon: (it87) Add support for beep on alarm

2010-03-05T21:17:17+00:00

The IT87xxF chips support beeping on alarm, if properly wired and
configured. There is one control bit for each input type (temperature,
fan, voltage.) Let the user see and change them.

Signed-off-by: Jean Delvare

hwmon: (it87) Create vid attributes by group

2010-03-05T21:17:16+00:00

Only VID-related attributes are left in it87_attributes_opt, so we
might as well rename it to it87_attributes_vid and use this group to
create all attributes at once.

Signed-off-by: Jean Delvare

hwmon: (it87) Refactor attributes creation and removal

2010-03-05T21:17:16+00:00

There is a lot of code redundancy in the creation of the fan and
pwm attributes. Move these attributes to arrays so that the code can
be simplified.

This in turns makes the attributes removal code larger, so move it to
a separate function that can be called in both the standard removal
case and the error path during probing.

Signed-off-by: Jean Delvare

hwmon: (it87) Expose the PWM/temperature mappings

2010-03-05T21:17:16+00:00

Let the user read the PWM-to-temperature mappings. Until the trip
points are also exposed, this is essentially a way to know how the
BIOS has set things up. The ability to change the settings will be
added later, together with the trip points.

Signed-off-by: Jean Delvare

hwmon: (it87) Display fan outputs in automatic mode as such

2010-03-05T21:17:15+00:00

The it87 driver doesn't yet support automatic fan control. Let it at
least tell the user when a fan output is in automatic mode. Also let
the user switch from automatic mode (possibly set by the BIOS) to
manual mode and back without losing the settings.

Signed-off-by: Jean Delvare

hwmon: (it87) Check for fan2 and fan3 availability

2009-12-09T19:35:48+00:00

The fan2 and fan3 input and output pins can be used as GPIOs. Check
their function before exposing their sysfs attributes and accessing
their registers.

Signed-off-by: Jean Delvare