On Mon, 3 Mar 2025 13:33:02 +0200 Matti Vaittinen <mazziesaccount@xxxxxxxxx> wrote: > The new devm_iio_adc_device_alloc_chaninfo() -helper is intended to help > drivers avoid open-coding the for_each_node -loop for getting the > channel IDs. The helper provides standard way to detect the ADC channel > nodes (by the node name), and a standard way to convert the "reg" > -propereties to channel identification numbers, used in the struct same typo. > iio_chan_spec. Furthermore, the helper can optionally check the found > channel IDs are smaller than given maximum. This is useful for callers > which later use the IDs for example for indexing a channel data array. > > The original driver treated all found child nodes as channel nodes. The > new helper requires channel nodes to be named channel[@N]. This should > help avoid problems with devices which may contain also other but ADC > child nodes. Quick grep from arch/* with the sun20i-gpadc's compatible > string didn't reveal any in-tree .dts with channel nodes named > otherwise. Also, same grep shows all the in-tree .dts seem to have > channel IDs between 0..num of channels. > > Use the new helper. > > Signed-off-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx> > Otherwise LGTM
