On 18/10/14 12:50, Lars-Peter Clausen wrote: > On 10/18/2014 01:42 PM, Jonathan Cameron wrote: >> On 02/10/14 13:32, Ivan T. Ivanov wrote: >>> When #iio-cells is greater than '0', the driver could provide >>> a custom of_xlate function that reads the *args* and returns >>> the appropriate index in registered IIO channels array. >>> >>> Add simple translation function, suitable for the most 1:1 >>> mapped channels in IIO chips, and use it when driver did not >>> provide custom implementation. >>> >>> Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx> >> Any more comments on this? Been sat a while and the discussions seems >> to have died out. >> >> As Ivan has pointed out, very similar approaches are used >> elsewhere (gpio for example). > > Looks good to me: > > Reviewed-by: Lars-Peter Clausen <lars@xxxxxxxxxx> > > When we initially added the DT support to IIO I was hoping that we can get away > with just using the simple and generic xlate function for all devices. But it > looks as if some more complex devices need to overwrite it. We should be careful > about adding new driver specific xlate implementations and make sure that it is > actually needed. > > One thing we might want to consider though is instead of adding the xlate > callback to the iio_dev struct add it to the iio_info struct since it should be > the same for different device instances of the same driver. And this is also > where all the other callbacks are. Good point - would definitely prefer that. J > > - Lars -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
