linux-kernel - Re: [linux-sunxi] [PATCH v3 03/11] pinctrl: sunxi: Prepare for alternative bias voltage setting methods

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Message-ID: <CAGRGNgUhPC+G+H_zYSi7KFx-K10uPOXRsPqPFcirGaWScw59dQ@mail.gmail.com>
Date:   Thu, 11 Apr 2019 20:34:33 +1000
From:   Julian Calaby <julian.calaby@...il.com>
To:     megous@...ous.com
Cc:     linux-sunxi <linux-sunxi@...glegroups.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Arend van Spriel <arend.vanspriel@...adcom.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-Hsien Lin <chi-hsien.lin@...ress.com>,
        Wright Feng <wright.feng@...ress.com>,
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Subject: Re: [linux-sunxi] [PATCH v3 03/11] pinctrl: sunxi: Prepare for
 alternative bias voltage setting methods

Hi Ondrej

On Thu, Apr 11, 2019 at 8:19 PM megous via linux-sunxi
<linux-sunxi@...glegroups.com> wrote:
>
> From: Ondrej Jirman <megous@...ous.com>
>
> H6 has a different I/O voltage bias setting method than A80. Prepare
> existing code for using alternative bias voltage setting methods.
>
> Signed-off-by: Ondrej Jirman <megous@...ous.com>
> diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.h b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
> index ee15ab067b5f..4bfc8a6d9dce 100644
> --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h
> +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
> @@ -95,6 +95,13 @@
>  #define PINCTRL_SUN7I_A20      BIT(7)
>  #define PINCTRL_SUN8I_R40      BIT(8)
>
> +enum sunxi_desc_bias_voltage {
> +       BIAS_VOLTAGE_NONE,
> +       /* Bias voltage configuration is done through
> +        * Pn_GRP_CONFIG registers, as seen on A80 SoC. */
> +       BIAS_VOLTAGE_GRP_CONFIG,
> +};
> +
>  struct sunxi_desc_function {
>         unsigned long   variant;
>         const char      *name;
> @@ -117,7 +124,7 @@ struct sunxi_pinctrl_desc {
>         const unsigned int              *irq_bank_map;
>         bool                            irq_read_needs_mux;
>         bool                            disable_strict_mode;
> -       bool                            has_io_bias_cfg;
> +       int                             io_bias_cfg_variant;

Shouldn't we be defining this field using the enum rather than as an int?

Thanks,

-- 
Julian Calaby

Email: julian.calaby@...il.com
Profile: http://www.google.com/profiles/julian.calaby/