linux-kernel - Re: [PATCH v4 04/11] regulator: Introduce tps68470-regulator driver

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Date:   Mon, 25 Oct 2021 14:11:24 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mark Gross <markgross@...nel.org>,
        Andy Shevchenko <andy@...radead.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Kate Hsuan <hpa@...hat.com>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v4 04/11] regulator: Introduce tps68470-regulator driver

On Mon, Oct 25, 2021 at 12:41 PM Hans de Goede <hdegoede@...hat.com> wrote:
>
> The TPS68470 PMIC provides Clocks, GPIOs and Regulators. At present in
> the kernel the Regulators and Clocks are controlled by an OpRegion
> driver designed to work with power control methods defined in ACPI, but
> some platforms lack those methods, meaning drivers need to be able to
> consume the resources of these chips through the usual frameworks.
>
> This commit adds a driver for the regulators provided by the tps68470,
> and is designed to bind to the platform_device registered by the
> intel_skl_int3472 module.
>
> This is based on this out of tree driver written by Intel:
> https://github.com/intel/linux-intel-lts/blob/4.14/base/drivers/regulator/tps68470-regulator.c
> with various cleanups added.

> +struct tps68470_regulator_data {
> +       struct clk *clk;
> +};

...

> +/*
> + * (1) This register must have same setting as VIOVAL if S_IO LDO is used to
> + *     power daisy chained IOs in the receive side.
> + * (2) If there is no I2C daisy chain it can be set freely.

> + *

Redundant empty line.

> + */

...

> +       struct tps68470_regulator_platform_data *pdata = pdev->dev.platform_data;

dev_get_platdata() ?

...

> +       data->clk = devm_clk_get(&pdev->dev, "tps68470-clk");
> +       if (IS_ERR(data->clk)) {
> +               dev_err(&pdev->dev, "Error getting tps68470-clk\n");
> +               return PTR_ERR(data->clk);
> +       }

return dev_err_probe(...);

...

> +               rdev = devm_regulator_register(&pdev->dev, &regulators[i], &config);
> +               if (IS_ERR(rdev)) {
> +                       dev_err(&pdev->dev, "failed to register %s regulator\n",
> +                               regulators[i].name);
> +                       return PTR_ERR(rdev);
> +               }

Ditto.

-- 
With Best Regards,
Andy Shevchenko