kernel.git/drivers/hwmon/it87.c, branch linux-2.6.37.y

hwmon: (it87) Fix manual fan speed control on IT8721F

2010-12-08T15:27:22Z

The manual fan speed control logic of the IT8721F is much different from what older devices had. Update the code to properly support that. Signed-off-by: Jean Delvare Acked-by: Guenter Roeck

hwmon: (it87) Add support for the IT8721F/IT8758E

2010-10-28T18:31:51Z

Add support for the IT8721F/IT8758E. These new chips differ from the older IT87xxF chips in the following ways: * ADC LSB is 12 mV instead of 16 mV. * PWM values are 8-bit instead of 7-bit. There are other minor changes we don't have to care about in the driver. Another change is that we will handle internal voltage scaling in the driver instead of delegating the work to user-space. Signed-off-by: Jean Delvare

hwmon: (it87) Move conversion functions

2010-10-28T18:31:51Z

Move conversion functions until after structure defintions. This is needed for future changes which make use of the structures in the conversion funtcions. Signed-off-by: Jean Delvare

hwmon: (it87) Export labels for internal sensors

2010-08-14T19:08:50Z

Some voltage sensors can be wired internally to the IT87xxF chip's own power supply channels. In that case, we can inform user-space that the wiring is known by exporting proper labels for these sensors. Signed-off-by: Jean Delvare

hwmon: (it87) Fix in7 on IT8720F

2010-07-09T14:22:48Z

The IT8720F has no VIN7 pin, so VCCH should always be routed internally to VIN7 with an internal divider. Curiously, there still is a configuration bit to control this, which means it can be set incorrectly. And even more curiously, many boards out there are improperly configured, even though the IT8720F datasheet claims that the internal routing of VCCH to VIN7 is the default setting. So we force the internal routing in this case. It turns out that all boards with the wrong setting are from Gigabyte, so I suspect a BIOS bug. But it's easy enough to workaround in the driver, so let's do it. Signed-off-by: Jean Delvare Cc: Jean-Marc Spaggiari Cc: stable@kernel.org

hwmon: (it87) Invalidate cache on temperature sensor change

2010-04-14T14:14:10Z

When any temperature sensor type is changed, the corresponding temperature value needs to be updated. The register caching mechanism may delay this update, so we want to invalidate the cache to force an immediate update. Signed-off-by: Jean Delvare

hwmon: (it87) Properly handle wrong sensor type requests

2010-04-14T14:14:09Z

Currently, if someone tries to set the thermal sensor type to an unsupported value, subsequent accesses to the chip may temporarily show the sensor in question as disabled. Use a temporary variable and only update the cached value on success, to prevent such confusion. Signed-off-by: Jean Delvare

hwmon: (it87) Don't arbitrarily enable temperature channels

2010-04-14T14:14:09Z

Temperature channels can be used in 2 different modes (thermistor and thermal diode) and we don't know which one, if any, is correct for every given board. So don't arbitrarily choose one. Instead, leave the temperature channels untouched. They can be configured from user-space if needed anyway. Signed-off-by: Jean Delvare

hwmon: (it87) Validate auto pwm settings

2010-03-05T21:17:21Z

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

2010-03-05T21:17:21Z

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