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

From: Daniel Baluta
Date: Wed Jan 27 2016 - 11:31:49 EST

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:
>> 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?


>> +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?

This will be a nice change for Linux kernel outreachy applicants :).
I'm sure they will
love to work on it.

>> + 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 :).