linux-toradex.git/drivers/hwmon, branch v3.16

hwmon: (smsc47m192) Fix temperature limit and vrm write operations

2014-07-24T13:25:25+00:00

Temperature limit clamps are applied after converting the temperature
from milli-degrees C to degrees C, so either the clamp limit needs
to be specified in degrees C, not milli-degrees C, or clamping must
happen before converting to degrees C. Use the latter method to avoid
overflows.

vrm is an u8, so the written value needs to be limited to [0, 255].

Cc: Axel Lin 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck 
Reviewed-by: Jean Delvare

hwmon: (adt7470) Fix writes to temperature limit registers

2014-07-17T04:18:47+00:00

Temperature limit registers are signed. Limits therefore need
to be clamped to (-128, 127) degrees C and not to (0, 255)
degrees C.

Without this fix, writing a limit of 128 degrees C sets the
actual limit to -128 degrees C.

Signed-off-by: Guenter Roeck 
Cc: stable@vger.kernel.org
Reviewed-by: Axel Lin

hwmon: (da9055) Don't use dash in the name attribute

2014-07-14T17:42:12+00:00

Dashes are not allowed in hwmon name attributes.
Use "da9055" instead of "da9055-hwmon".

Signed-off-by: Axel Lin 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck

hwmon: (da9052) Don't use dash in the name attribute

2014-07-14T17:42:12+00:00

Dashes are not allowed in hwmon name attributes.
Use "da9052" instead of "da9052-hwmon".

Signed-off-by: Axel Lin 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck

hwmon: (adc128d818) Drop write support on inX_input attributes

2014-07-07T16:48:23+00:00

Writes into input registers doesn't make sense, even more so since
the writes actually ended up writing into the maximum limit registers.
Drop it.

Cc: stable@vger.kernel.org
Reviewed-by: Jean Delvare 
Signed-off-by: Guenter Roeck

hwmon: (emc2103) Clamp limits instead of bailing out

2014-07-07T14:15:31+00:00

It is customary to clamp limits instead of bailing out with an error
if a configured limit is out of the range supported by the driver.
This simplifies limit configuration, since the user will not typically
know chip and/or driver specific limits.

Reviewed-by: Jean Delvare 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck

hwmon: (adm1031) Fix writes to limit registers

2014-07-07T12:49:25+00:00

Upper limit for write operations to temperature limit registers
was clamped to a fractional value. However, limit registers do
not support fractional values. As a result, upper limits of 127.5
degrees C or higher resulted in a rounded limit of 128 degrees C.
Since limit registers are signed, this was stored as -128 degrees C.
Clamp limits to (-55, +127) degrees C to solve the problem.

Value on writes to auto_temp[12]_min and auto_temp[12]_max were not
clamped at all, but masked. As a result, out-of-range writes resulted
in a more or less arbitrary limit. Clamp those attributes to (0, 127)
degrees C for more predictable results.

Cc: Axel Lin 
Cc: stable@vger.kernel.org
Reviewed-by: Jean Delvare 
Signed-off-by: Guenter Roeck

hwmon: (adm1021) Fix cache problem when writing temperature limits

2014-07-03T16:45:26+00:00

The module test script for the adm1021 driver exposes a cache problem
when writing temperature limits. temp_min and temp_max are expected
to be stored in milli-degrees C but are stored in degrees C.

Reported-by: Guenter Roeck 
Signed-off-by: Axel Lin 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck

hwmon: (adm1029) Ensure the fan_div cache is updated in set_fan_div

2014-07-03T16:45:17+00:00

Writing to fanX_div does not clear the cache. As a result, reading
from fanX_div may return the old value for up to two seconds
after writing a new value.

This patch ensures the fan_div cache is updated in set_fan_div().

Reported-by: Guenter Roeck 
Signed-off-by: Axel Lin 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck

hwmon: (amc6821) Fix permissions for temp2_input

2014-07-03T16:45:00+00:00

temp2_input should not be writable, fix it.

Reported-by: Guenter Roeck 
Signed-off-by: Axel Lin 
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck