1. Trange sysctl's belong to the temp sensors, not to the fan controllers
2. Trange really describes a slope on many chips, so modify the description
3. Most of the sysctl's are read/write even if the chip's config is
locked; reflect that in the CTLFLAGs
4. Apply correct 'nominal' values for voltage sensors/limits, specify
them in microVolts, and calculate once rather than each time needed
5. Be more consistent in register names - for example, use VCC instead of
SUPPLY_VOLTAGE, to match VCC_LOWLIM & VCC_HIGHLIM
6. Type of dbcool_islocked() should be bool, not int
7. Reduce some unnecessary code indentation
8. Define Vtt and Imon, and add ADT7490 support (excluding PECI sensors)
9. Split the huge (250+ lines) dbcool_setup() function into a few smaller
routines for better readability
10. Update sensor tables for ADT7476 and ADT7468 - these chips have five
voltage sensors, not two
11. Adjust flags for ADT7463 and ADM1027 - these chips can monitor CPU
VID data bits
12. Update man page
Supported chips: ADM1027, ADM1030, ADT7463, ADT7466, ADT7467, ADT7468,
ADT7473, ADT7475, and ADT7476. Notably missing is the ADT7490, and fan
controller support on the ADT7466 is still on the to-do list.
Tested by myself and njoly@
Reviewed by garbled@
Commit approved by christos@, bouyer@, cube@, and matt@
wiz