Re: [PATCH v5] iio: Add OF support

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On 02/20/2013 07:24 PM, Guenter Roeck wrote:
> On Wed, Feb 20, 2013 at 06:51:08PM +0000, Jonathan Cameron wrote:
>>
>>
>> Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
>>
>>> On Wed, Feb 20, 2013 at 11:38:22AM -0600, Rob Herring wrote:
>>>> On 02/07/2013 11:09 AM, Guenter Roeck wrote:
>>>>> Provide bindings and parse OF data during initialization.
>>>>>
>>>>> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
>>>>> ---
>>>>> v5:
>>>>> - Updated examples in bindings.
>>>>> v4:
>>>>> - Fixed wrong parameter to dummy of_iio_channel_get_by_name if
>>> CONFIG_OF is
>>>>>   undefined, and wrong return value.
>>>>> - Initialize indio_dev->of_node in iio_device_register if the
>>> calling driver
>>>>>   neglected to do it.
>>>>> v3:
>>>>> - Cleaned up documentation (formatting, left-over clock references)
>>>>> - Updated bindings description to permit sub-devices
>>>>> - When searching for iio devices, use the pointer to the iio device
>>> type instead
>>>>>   of strcmp. Rename iio_dev_type to iio_device_type (to match other
>>> device
>>>>>   types) and make it global for that purpose. Check the OF node
>>> first, then the
>>>>>   device type, as the node is less likely to match.
>>>>> - Move the common code in of_iio_channel_get and
>>> of_iio_channel_get_all to
>>>>>   __of_iio_channel_get.
>>>>> - Return NULL from of_iio_channel_get_by_name if nothing is found,
>>> or
>>>>>   an error if there is a problem with consistency or if the
>>> provider device is
>>>>>   not yet available.
>>>>> - In iio_channel_get, return if of_iio_channel_get_by_name()
>>> returns a channel
>>>>>   or an error, and continue otherwise.
>>>>> v2:
>>>>> - Rebased to iio/togreg
>>>>> - Documentation update per feedback
>>>>> - Dropped io-channel-output-names from the bindings document. The
>>> property is
>>>>>   not used in the code, and it is not entirely clear what it would
>>> be used for.
>>>>>   If there is a need for it, we can add it back in later on.
>>>>> - Don't export OF specific API calls
>>>>> - For OF support, no longer depend on iio_map
>>>>> - Add #ifdef CONFIG_OF where appropriate, and ensure that the code
>>> still builds
>>>>>   if it is not selected.
>>>>> - Change iio_channel_get to take device pointer as argument instead
>>> of device
>>>>>   name. Retain old API as of_iio_channel_get_sys.
>>>>> - iio_channel_get now works for both OF and non-OF configurations
>>>>> - Use regulator to get vref for max1363 driver.
>>>>>
>>>>>  .../devicetree/bindings/iio/iio-bindings.txt       |   97
>>> +++++++++++
>>>>>  drivers/iio/iio_core.h                             |    1 +
>>>>>  drivers/iio/industrialio-core.c                    |    8 +-
>>>>>  drivers/iio/inkern.c                               |  171
>>> ++++++++++++++++++++
>>>>>  4 files changed, 275 insertions(+), 2 deletions(-)
>>>>>  create mode 100644
>>> Documentation/devicetree/bindings/iio/iio-bindings.txt
>>>>>
>>>>> diff --git a/Documentation/devicetree/bindings/iio/iio-bindings.txt
>>> b/Documentation/devicetree/bindings/iio/iio-bindings.txt
>>>>> new file mode 100644
>>>>> index 0000000..1182845
>>>>> --- /dev/null
>>>>> +++ b/Documentation/devicetree/bindings/iio/iio-bindings.txt
>>>>> @@ -0,0 +1,97 @@
>>>>> +This binding is a work-in-progress. It is derived from clock
>>> bindings,
>>>>> +and based on suggestions from Lars-Peter Clausen [1].
>>>>
>>>> Bindings are an ABI. It should not be a WIP. What part is a WIP?
>>>>
>>> The text is copied from clock bindings. I do not claim to be better
>>> than the clock subsystem is doing in respect to its bindings.
>>>
>>> I'll be more than happy to take this text out if it is a source of
>>> contention,
>>> even more so if that is what is holding up the patch. Jonathan ?
>> I don't really care about the wording though can see why Rob asked!
>> We will probably have other stuff to add anyway.
>>
> 
> Quite likely - for example, I did not add io-output-names since I did not
> know what to do with it.
> 
> What do you want me to do ? Submit another version with the sentence deleted,
> or keep it as-is ?
Keep as is.  Thanks,

Jonathan
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