On 05/25/2009 05:17 PM, Rob Bloom wrote: > Hi, > > I'm in a project which is looking at using lm-sensors to monitor the > following chips on various circuit boards: > > - ADM1032ARMZ (temp sensor) > - MAX6639 (temp sensor) > - POWR1014A (power monitor) > - SA56004EDP (temp sensor) > > I cross-checked these against the lm-sensors list of supported chips > (http://www.lm-sensors.org/wiki/Devices) and find that only the 1st one > is supported. > > Do you know if there are any plans to develop support for the latter 3 > in the list? If it is not listed on the wiki then usually no drivers are being developed for it. > If there are no plans and no compatibilities, is there documentation you > can point me to that describes a framework for adding a driver to be > supported by lm-sensors. I'd like to consider this if this is not > difficult. > Writing new hwmon drivers usually is pretty straight forward. I would start with the 2 temp drivers which generally speaking are easy. What you can do is get an i2c-tiny-usb: http://www.harbaum.org/till/i2c_tiny_usb/ Which is a small pcb with a ?C on it which plugs into usb on one side and talks i2c on the other, get a few samples and connect those to the i2c bus, and then start writing your driver. A good example of a simple temp only hwmon driver for an i2c temp monitor IC is the new driver for TI tmp401 / tmp411 IC's which you can find here: http://www.kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-hwmon/ > As I understand it, there is no chip-specific code in lm-sensors; to add > support, one must add driver code into the kernel itself (ie. no code is > added to the lm-sensors domain). Is this correct? Correct. > Is there an example > of a driver that was supported recently that I can use as an > example/framework? > See above. Don't hesitate to ask any more questions if you have any I'm always happy to help get people up to speed with hwmon driver development. Regards, Hans
