linux-kernel - Re: [PATCH v4 09/15] iio: adc: axp20x_adc: Replace adc_en2 flag with adc_en2

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Message-ID: <CAHp75VfHT_kNAySz2=i9+-reU=UOHuQ9cxTq_5+qUOmcMpQtrQ@mail.gmail.com>
Date:   Thu, 30 Jun 2022 09:58:39 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Aidan MacDonald <aidanmacdonald.0x0@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Sebastian Reichel <sre@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>, quic_gurus@...cinc.com,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Michael Walle <michael@...le.cc>,
        Randy Dunlap <rdunlap@...radead.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v4 09/15] iio: adc: axp20x_adc: Replace adc_en2 flag with
 adc_en2_mask field

On Wed, Jun 29, 2022 at 4:30 PM Aidan MacDonald
<aidanmacdonald.0x0@...il.com> wrote:
>
> The adc_en2 flag is essentially specific to axp20x-compatible devices
> because it hardcodes register values. Replace it with a mask field
> so the register value can be specified in device match data.

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

> Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
> ---
>  drivers/iio/adc/axp20x_adc.c | 16 +++++++---------
>  1 file changed, 7 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
> index ab25e6e1ff65..75bda94dbce1 100644
> --- a/drivers/iio/adc/axp20x_adc.c
> +++ b/drivers/iio/adc/axp20x_adc.c
> @@ -623,9 +623,9 @@ struct axp_data {
>         int                             num_channels;
>         struct iio_chan_spec const      *channels;
>         unsigned long                   adc_en1_mask;
> +       unsigned long                   adc_en2_mask;
>         int                             (*adc_rate)(struct axp20x_adc_iio *info,
>                                                     int rate);
> -       bool                            adc_en2;
>         struct iio_map                  *maps;
>  };
>
> @@ -634,8 +634,8 @@ static const struct axp_data axp20x_data = {
>         .num_channels = ARRAY_SIZE(axp20x_adc_channels),
>         .channels = axp20x_adc_channels,
>         .adc_en1_mask = AXP20X_ADC_EN1_MASK,
> +       .adc_en2_mask = AXP20X_ADC_EN2_MASK,
>         .adc_rate = axp20x_adc_rate,
> -       .adc_en2 = true,
>         .maps = axp20x_maps,
>  };
>
> @@ -645,7 +645,6 @@ static const struct axp_data axp22x_data = {
>         .channels = axp22x_adc_channels,
>         .adc_en1_mask = AXP22X_ADC_EN1_MASK,
>         .adc_rate = axp22x_adc_rate,
> -       .adc_en2 = false,
>         .maps = axp22x_maps,
>  };
>
> @@ -655,7 +654,6 @@ static const struct axp_data axp813_data = {
>         .channels = axp813_adc_channels,
>         .adc_en1_mask = AXP22X_ADC_EN1_MASK,
>         .adc_rate = axp813_adc_rate,
> -       .adc_en2 = false,
>         .maps = axp22x_maps,
>  };
>
> @@ -713,10 +711,10 @@ static int axp20x_probe(struct platform_device *pdev)
>         /* Enable the ADCs on IP */
>         regmap_write(info->regmap, AXP20X_ADC_EN1, info->data->adc_en1_mask);
>
> -       if (info->data->adc_en2)
> -               /* Enable GPIO0/1 and internal temperature ADCs */
> +       if (info->data->adc_en2_mask)
>                 regmap_update_bits(info->regmap, AXP20X_ADC_EN2,
> -                                  AXP20X_ADC_EN2_MASK, AXP20X_ADC_EN2_MASK);
> +                                  info->data->adc_en2_mask,
> +                                  info->data->adc_en2_mask);
>
>         /* Configure ADCs rate */
>         info->data->adc_rate(info, 100);
> @@ -741,7 +739,7 @@ static int axp20x_probe(struct platform_device *pdev)
>  fail_map:
>         regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
>
> -       if (info->data->adc_en2)
> +       if (info->data->adc_en2_mask)
>                 regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
>
>         return ret;
> @@ -757,7 +755,7 @@ static int axp20x_remove(struct platform_device *pdev)
>
>         regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
>
> -       if (info->data->adc_en2)
> +       if (info->data->adc_en2_mask)
>                 regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
>
>         return 0;
> --
> 2.35.1
>


-- 
With Best Regards,
Andy Shevchenko