On Oct 31, 2012, at 8:07 PM, Lars-Peter Clausen wrote:
> On 10/31/2012 06:55 PM, Pantelis Antoniou wrote:
>> [...]
>>>> }
>>>>
>>>> indio_dev->channels = chan_array;
>>>> + indio_dev->num_channels = channels;
>>>> +
>>>> + size = (channels + 1) * sizeof(struct iio_map);
>>>> + adc_dev->map = kzalloc(size, GFP_KERNEL);
>>>> + if (adc_dev->map == NULL) {
>>>> + kfree(chan_array);
>>>> + return -ENOMEM;
>>>> + }
>>>> +
>>>> + for (i = 0; i < indio_dev->num_channels; i++) {
>>>> + adc_dev->map[i].adc_channel_label = chan_array[i].datasheet_name;
>>>> + adc_dev->map[i].consumer_dev_name = "any";
>>>> + adc_dev->map[i].consumer_channel = chan_array[i].datasheet_name;
>>>> + }
>>>> + adc_dev->map[i].adc_channel_label = NULL;
>>>> + adc_dev->map[i].consumer_dev_name = NULL;
>>>> + adc_dev->map[i].consumer_channel = NULL;
>>>
>>> The map should be passed in via platform data or similar. All the fields of
>>> the map depend on the specific user, so you can't use a generic map. In fact
>>> if we were able to use a generic map, we wouldn't need a map at all.
>>
>> There's no platform data in the board I'm using. It's board-generic using
>> device tree only.
>
> That's the 'or similar' ;) Unfortunately we do not have a device tree
> binding for IIO yet. But I think we should aim at a interface similar like
> we have in other subsystems like the clk, regulator or dma framework.
>
> - Lars
So in the meantime no-one can use IIO ADC in any OF only platform.
In the meantime, this is pretty reasonable IMO. This is only for a specific
board with known channel mappings.
I'm not out to fix IIO, I'm out to fix a single board.
Regards
-- Pantelis --
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