Re: [PATCH] iio: adc: Add TI ADS1015 ADC driver support

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On 27 January 2016 16:31:42 GMT+00:00, Daniel Baluta <daniel.baluta@xxxxxxxxx> wrote:
>On Sat, Jan 16, 2016 at 2:07 PM, Jonathan Cameron <jic23@xxxxxxxxxx>
>wrote:
>> On 14/01/16 16:25, Daniel Baluta wrote:
>>> The driver has sysfs readings with runtime PM support for power
>saving.
>>> It also offers buffer support that can be used together with IIO
>software
>>> triggers.
>>>
>>> Datasheet can be found here:
>>>       http://www.ti.com.cn/cn/lit/ds/symlink/ads1015.pdf
>>>
>>> Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
>
>Thanks for the feedback! Few questions below.
>
>
>> The hwmon compatibility stuff has been covered by others so I'll just
>assume
>> you'll sort that out :)
>>
>> Various bits and bobs inline.
>
>Do you think it is worth to have both of the drivers in parallel for a
>period until
>we figure out that everything is correct? The IIO config symbol can be
>enabled
>only hwmon symbol is not enabled?
>
Yes. (That was easy)
><snip>
>
>>> +struct ads1015_data {
>> I was a little suprised to see both the i2c_client and regmap in
>here...
>> Could use regmap_get_device for most if not all uses in here of the
>> client pointer..
>
>That's a good point. Anyhow, there is no single instance of
>regmap_get_device
>in the IIO tree. I counted at least 4 drivers where we could use it.
>Do you think
>is there a great benefit from using it?
I only came across it here by thinking surely there was a better way!

>
>This will be a nice change for Linux kernel outreachy applicants :).
>I'm sure they will
>love to work on it.
Cool.
>
>>> +     struct i2c_client *client;
>>> +     struct regmap *regmap;
>> You only use buffer[0] that I can see...
>
>The rest should be for the timestamp and I will fix it :).
>
><snip>
>
>thanks,
>Daniel.

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