On Sat, May 29, 2010 at 04:53:01AM -0400, Wolfram Sang wrote: > > If there is no activity yet, question is if I should write individual drivers or > > if I should define a PMBus infrastructure on top of i2c/smbus first. > > Any thoughts on which approach would be more likely to be accepted into the kernel ? > > Did I get this correct: The plan is to support PMBus-devices and let them > report their data in a hwmon-compatible-way? > Yes. > (If so, did you already check how well PMBus data maps to the > hwmon-sysfs-interface?) > Yes. PMBus uses i2c as transport, so it can use the existing i2c/smbus infrastructure. Data reported is voltage, temperature, current, power, and fan data as available from the individual chip. Chips support a chip dependent number of channels. Values reported are typically in the form of X = Y * 2^N, ie there is a mantissa and an exponent. So I would say it maps pretty well; I don't really see a substantial difference to other HW monitoring chips in that respect. Key difference may be that PMBus devices typically also have a control component, but I don't have plans to implement that, at least not for now. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
