There's a very remote, but possible, chance that the integer part read will
fail, but the fraction read succeeds, at which point the reported temperature is
invalid.
Reported by: Matthew Rezny
MFC after: 3 weeks
- Add a retry loop for the i2c sensor reading.
- Check on busy status of the chip and on invalid values.
- Fix a typo in a comment.
- Replace the constant 2732 with the ZERO_C_TO_K macro.
Approved by: nwhitehorn (mentor)
PowerMac7,2.
- The fcu driver lets us read and write the fan RPMs for all fans in the
PowerMac7,2. This driver is PowerMac specific.
- The ds1775 is a driver to read the temperature for the drive bay sensor.
- The max6690 is another driver to read temperatures. Here it is used to
read the inlet, the backside and the U3 heatsink temperature.
An additional driver, the ad7417, will follow later.
Thanks to nwhitehorn for guiding me through this driver development.
Approved by: nwhitehorn (mentor)
