linux-kernel - Re: [RFC PATCH 3/7] iio: adc: axp20x-adc: add support for AXP803

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Message-ID: <1ba65180-9f13-0ef4-9213-1b20f15b5bdb@free-electrons.com>
Date:   Mon, 25 Sep 2017 10:48:54 +0200
From:   Quentin Schulz <quentin.schulz@...e-electrons.com>
To:     Icenowy Zheng <icenowy@...c.io>, Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lee Jones <lee.jones@...aro.org>
Cc:     devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH 3/7] iio: adc: axp20x-adc: add support for AXP803

Hi Icenowy,

On 20/09/2017 17:18, Icenowy Zheng wrote:
> AXP803 SoC features an ADC part including these channels: GPADC (GPIO0)
> and TS pins, PMIC internal temperature sensor, battery voltage, battery
> charge/discharge current.
> 
> Add support for the battery-related channels and internal temperature
> channel in order to allow battery monitoring. The TS and GPADC channels
> are complex and will be support after more investigation.
> 
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> ---
>  drivers/iio/adc/axp20x_adc.c | 108 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 108 insertions(+)
> 
> diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
> index 93dd6b80059e..4f0cd98cf6ea 100644
> --- a/drivers/iio/adc/axp20x_adc.c
> +++ b/drivers/iio/adc/axp20x_adc.c
> @@ -28,6 +28,8 @@
[...]>  /*
> + * AXP803 shares the same consumer map with AXP22x, as it has no ADC for
> + * VBUS and ACIN inputs either.
> + */
> +
> +/*

Put that in the commit log?
If we add a comment for each newly supported PMIC we will end up with
more comments than code :)

[...]>
> +static const struct axp_data axp803_data = {
> +	.iio_info = &axp803_adc_iio_info,
> +	.num_channels = ARRAY_SIZE(axp803_adc_channels),
> +	.channels = axp803_adc_channels,
> +	.adc_en1_mask = AXP803_ADC_EN1_MASK,
> +	.adc_en2 = false,

Not required I guess, by default it is false.

Thanks,
Quentin
-- 
Quentin Schulz, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com