linux-kernel - Re: [PATCH v2 04/16] iio: adc: sun4i-gpadc-iio: rework: sampling start/end code readout reg

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Date:   Wed, 31 Jan 2018 19:35:55 +0100
From:   Philipp Rossak <embed3d@...il.com>
To:     Quentin Schulz <quentin.schulz@...e-electrons.com>
Cc:     lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        linux@...linux.org.uk, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, davem@...emloft.net,
        hans.verkuil@...co.com, mchehab@...nel.org, rask@...melder.dk,
        clabbe.montjoie@...il.com, sean@...s.org, krzk@...nel.org,
        icenowy@...c.io, edu.molinas@...il.com, singhalsimran0@...il.com,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH v2 04/16] iio: adc: sun4i-gpadc-iio: rework: sampling
 start/end code readout reg



On 31.01.2018 18:51, Quentin Schulz wrote:
> Hi Philipp,
> 
> On Mon, Jan 29, 2018 at 12:29:07AM +0100, Philipp Rossak wrote:
>> For adding newer sensor some basic rework of the code is necessary.
>>
>> This commit reworks the code and allows the sampling start/end code and
>> the position of value readout register to be altered. Later the start/end
>> functions will be used to configure the ths and start/stop the
>> sampling.
>>
>> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>> Signed-off-by: Philipp Rossak <embed3d@...il.com>
>> ---
>>   drivers/iio/adc/sun4i-gpadc-iio.c | 44 ++++++++++++++++++++++++++++++++++-----
>>   1 file changed, 39 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
>> index 03804ff9c006..db57d9fffe48 100644
>> --- a/drivers/iio/adc/sun4i-gpadc-iio.c
>> +++ b/drivers/iio/adc/sun4i-gpadc-iio.c
>> @@ -49,6 +49,15 @@ static unsigned int sun6i_gpadc_chan_select(unsigned int chan)
>>   	return SUN6I_GPADC_CTRL1_ADC_CHAN_SELECT(chan);
>>   }
>>   
>> +struct sun4i_gpadc_iio;
>> +
>> +/*
>> + * Prototypes for these functions, which enable these functions to be
>> + * referenced in gpadc_data structures.
>> + */
> 
> Comment not needed.
> 
>> +static int sun4i_gpadc_sample_start(struct sun4i_gpadc_iio *info);
>> +static int sun4i_gpadc_sample_end(struct sun4i_gpadc_iio *info);
>> +
>>   struct gpadc_data {
>>   	int		temp_offset;
>>   	int		temp_scale;
>> @@ -56,6 +65,9 @@ struct gpadc_data {
>>   	unsigned int	tp_adc_select;
>>   	unsigned int	(*adc_chan_select)(unsigned int chan);
>>   	unsigned int	adc_chan_mask;
>> +	unsigned int	temp_data;
> 
> Does not really have anything to do with sample_start/end. I would have
> made a different commit for it.
> 
> Otherwise,
> Reviewed-by: Quentin Schulz <quentin.schulz@...e-electrons.com>
> 
> Quentin
> 

Ok I will split this.

Thanks,
Philipp