On Tue, 2011-05-03 at 11:55 -0400, Vivien Didelot wrote: > Hi Guenter, > > Excerpts from Guenter Roeck's message of 2011-04-29 23:39:38 -0400: > > Hi Vivien, > > > > The headline and file name are a bit misleading, since the driver is really > > for MAX197 on a TS-5500 board. > > > > You should split the driver into two parts, a generic driver > > for the MAX197 and a platform driver (residing somewhere in arch/ > > or possibly drivers/platform/) to instantiate it. > > > > There should be a platform data include file, probably in > > include/linux/platform_data/. > > > > .ioaddr in platform data should not be necessary. The driver's probe > > function should get the values using platform_get_resource(). > > > > Having said that, from reading the code it looks like the chip is not really > > used for hardware monitoring, but for generic ADC functionality. A quick > > look > > into the TS-5500 user manual confirms this. So this should not be a hwmon > > driver in the first place, but a generic ADC driver. Given the ADC > > conversion rate > > of the MAX197, the hwmon ABI is not optimal anyway. You should move this > > driver > > into the iio subsystem, probably to drivers/staging/iio/adc. Copying the iio > > mailing list for input. > > > > Thanks, > > Guenter > > I've took a closer look to the manual and that's right, in fact the > driver doesn't talk to the MAX197 directly. The board uses a CPLD to > abstract the interface to the MAX197. So all the MAX197 logic is hidden > by the CPLD. Therefore, the driver files should probably not have > function and structure names with a "max197_" prefix. I'll make the code > a bit clearer. What do you think? > The original driver for the chip on http://mcrapet.free.fr/ has a platform dependent and a platform independent part. Other than coding style issues, that approach seems to be cleaner to me.
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