Re: [RFC 1/2] iio: core: added support for a single output that supports both current and voltage

[Jonathan Cameron <jic23@kernel.org>]

On 22/01/16 16:49, Jonathan Cameron wrote:
> 
> 
> On 22 January 2016 14:37:33 GMT+00:00, "Sean Nyekjær" <sean.nyekjaer@prevas.dk> wrote:
>> Hi
>>
>> How do you register two channels for one channel?
I got this a bit backwards reading it on the phone and thought we were dealing
with an ADC rather than a DAC (oops!) I'm going to move the rest of this
discussion into the reply to patch 2 as it will make more sense alongside
your usecase there.

<snip>
> 
> 
>> Please give a quick example
> Phone only so will get back to you tomorrow!
> 
>>
>> /Sean
>>
>> On 2016-01-22 15:14, Jonathan Cameron wrote:
>>> Hi
>>>
>>> Quick gut feel response. Register two channels.
>>>
>>> Jonathan
>>>
>>> On 22 January 2016 12:54:55 GMT+00:00, Sean Nyekjaer 
>>> <sean.nyekjaer@prevas.dk> wrote:
>>>
>>>     Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
>>>     ---
>>>       drivers/iio/industrialio-core.c | 2 ++
>>>       include/linux/iio/iio.h         | 1 +
>>>       include/uapi/linux/iio/types.h  | 1 +
>>>       3 files changed, 4 insertions(+)
>>>
>>>     diff --git a/drivers/iio/industrialio-core.c
>> b/drivers/iio/industrialio-core.c
>>>     index fd01f34..5e1beea 100644
>>>     --- a/drivers/iio/industrialio-core.c
>>>     +++ b/drivers/iio/industrialio-core.c
>>>     @@ -77,6 +77,7 @@ static const char * const
>> iio_chan_type_name_spec[] = {
>>>        [IIO_VELOCITY] = "velocity",
>>>        [IIO_CONCENTRATION] = "concentration",
>>>        [IIO_RESISTANCE] = "resistance",
>>>     + [IIO_DUAL_VOLTCUR] = "voltcur",
>>>       };
>>>       
>>>       static const char * const iio_modifier_names[] = {
>>>     @@ -146,6 +147,7 @@ static const char * const
>> iio_chan_info_postfix[] = {
>>>        [IIO_CHAN_INFO_DEBOUNCE_TIME] = "debounce_time",
>>>        [IIO_CHAN_INFO_CALIBEMISSIVITY] = "calibemissivity",
>>>       
>>>     [IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio",
>>>     + [IIO_CHAN_INFO_MODE] = "mode",
>>>       };
>>>       
>>>       /**
>>>     diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
>>>     index b589411..ef4c7cd9 100644
>>>     --- a/include/linux/iio/iio.h
>>>     +++ b/include/linux/iio/iio.h
>>>     @@ -46,6 +46,7 @@ enum iio_chan_info_enum {
>>>        IIO_CHAN_INFO_DEBOUNCE_TIME,
>>>        IIO_CHAN_INFO_CALIBEMISSIVITY,
>>>        IIO_CHAN_INFO_OVERSAMPLING_RATIO,
>>>     + IIO_CHAN_INFO_MODE,
>>>       };
>>>       
>>>       enum iio_shared_by {
>>>     diff --git a/include/uapi/linux/iio/types.h
>> b/include/uapi/linux/iio/types.h
>>>     index 7c63bd6..81e6a2a 100644
>>>     --- a/include/uapi/linux/iio/types.h
>>>     +++ b/include/uapi/linux/iio/types.h
>>>     @@ -37,6 +37,7 @@ enum iio_chan_type {
>>>        IIO_VELOCITY,
>>>        IIO_CONCENTRATION,
>>>        IIO_RESISTANCE,
>>>     + IIO_DUAL_VOLTCUR,
>>>       };
>>>       
>>>       enum iio_modifier {
>>>
>>>
>>> -- 
>>> Sent from my Android device with K-9 Mail. Please excuse my brevity. 
>>
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>