Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220618214009.2178567-1-aidanmacdonald.0x0@gmail.com> <20220618214009.2178567-12-aidanmacdonald.0x0@gmail.com>
In-Reply-To: <20220618214009.2178567-12-aidanmacdonald.0x0@gmail.com>
From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Sun, 19 Jun 2022 12:55:41 +0200
Message-ID: <CAHp75VcMRAijXYGwVx8OPzMeafjT4Xa8rx_pRqRTs66Puw8qMA@mail.gmail.com>
Subject: Re: [PATCH v3 11/16] iio: adc: axp20x_adc: Add support for AXP192
To:     Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Cc:     Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Chen-Yu Tsai <wens@csie.org>,
        Jonathan Cameron <jic23@kernel.org>,
        Lee Jones <lee.jones@linaro.org>,
        Sebastian Reichel <sre@kernel.org>,
        Mark Brown <broonie@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Lars-Peter Clausen <lars@metafoo.de>,
        "Rafael J. Wysocki" <rafael@kernel.org>, quic_gurus@quicinc.com,
        Sebastian Reichel <sebastian.reichel@collabora.com>,
        Michael Walle <michael@walle.cc>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        devicetree <devicetree@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-iio <linux-iio@vger.kernel.org>,
        Linux PM <linux-pm@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Sat, Jun 18, 2022 at 11:40 PM Aidan MacDonald
<aidanmacdonald.0x0@gmail.com> wrote:
>
> The AXP192 is identical to the AXP20x, except for the addition of
> two more GPIO ADC channels.

...

> +static int axp192_write_raw(struct iio_dev *indio_dev,
> +                           struct iio_chan_spec const *chan, int val, int val2,
> +                           long mask)
> +{
> +       struct axp20x_adc_iio *info = iio_priv(indio_dev);
> +       unsigned int regmask, regval;
> +
> +       /*
> +        * The AXP192 PMIC allows the user to choose between 0V and 0.7V offsets
> +        * for (independently) GPIO0-3 when in ADC mode.
> +        */
> +       if (mask != IIO_CHAN_INFO_OFFSET)
> +               return -EINVAL;
> +
> +       if (val != 0 && val != 700000)
> +               return -EINVAL;

> +       regval = val ? 1 : 0;
> +

As per comment against the previous patch use !!val directly?

> +       switch (chan->channel) {
> +       case AXP192_GPIO0_V:
> +               regmask = AXP192_GPIO30_IN_RANGE_GPIO0;
> +               regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO0, regval);
> +               break;
> +
> +       case AXP192_GPIO1_V:
> +               regmask = AXP192_GPIO30_IN_RANGE_GPIO1;
> +               regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO1, regval);
> +               break;
> +
> +       case AXP192_GPIO2_V:
> +               regmask = AXP192_GPIO30_IN_RANGE_GPIO2;
> +               regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO2, regval);
> +               break;
> +
> +       case AXP192_GPIO3_V:
> +               regmask = AXP192_GPIO30_IN_RANGE_GPIO3;
> +               regval = FIELD_PREP(AXP192_GPIO30_IN_RANGE_GPIO3, regval);
> +               break;
> +
> +       default:
> +               return -EINVAL;
> +       }
> +
> +       return regmap_update_bits(info->regmap, AXP192_GPIO30_IN_RANGE, regmask, regval);
> +}

-- 
With Best Regards,
Andy Shevchenko