linux-kernel - Re: [PATCH v5 6/7] regulator: Add refactored mtk-dvfsrc-regulator driver

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Date: Wed, 24 Apr 2024 12:35:04 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: amergnat@...libre.com, broonie@...nel.org, conor+dt@...nel.org,
 devicetree@...r.kernel.org, djakov@...nel.org, gustavoars@...nel.org,
 henryc.chen@...iatek.com, keescook@...omium.org, kernel@...labora.com,
 krzysztof.kozlowski+dt@...aro.org, lgirdwood@...il.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-mediatek@...ts.infradead.org, linux-pm@...r.kernel.org,
 matthias.bgg@...il.com, robh@...nel.org, wenst@...omium.org
Subject: Re: [PATCH v5 6/7] regulator: Add refactored mtk-dvfsrc-regulator
 driver

Le 24/04/2024 à 11:54, AngeloGioacchino Del Regno a écrit :
> The previous driver never worked, and never got even compiled because
> it was missing the DVFSRC driver entirely, including needed neaders.
> 
> This is a full (or nearly full) refactoring of the MediaTek DVFSRC
> controlled Regulators driver, retaining support for the MT6873, MT8183
> and MT8192 SoC, and adding MT8195.
> 
> As part of the refactoring, this driver is now probed using its own
> devicetree compatible, as this is a child of the main DVFSRC driver
> and gets probed as a subnode of that.
> 
> Reviewed-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@...lic.gmane.org>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno-ZGY8ohtN/8qB+jHODAdFcQ@...lic.gmane.org>
> ---
>   drivers/regulator/mtk-dvfsrc-regulator.c | 196 +++++++++++++++++++++++
>   1 file changed, 196 insertions(+)
>   create mode 100644 drivers/regulator/mtk-dvfsrc-regulator.c
> 

..

> +static int dvfsrc_vcore_regulator_probe(struct platform_device *pdev)
> +{
> +	struct regulator_config config = { .dev = &pdev->dev };
> +	const struct dvfsrc_regulator_pdata *pdata;
> +	int i;
> +
> +	pdata = device_get_match_data(&pdev->dev);
> +	if (!pdata)
> +		return -EINVAL;
> +
> +	for (i = 0; i < pdata->size; i++) {
> +		struct regulator_desc *vrdesc = &pdata->descs[i];
> +		struct regulator_dev *rdev;
> +
> +		rdev = devm_regulator_register(&pdev->dev, vrdesc, &config);
> +		if (IS_ERR(rdev)) {
> +			dev_err(&pdev->dev, "failed to register %s\n", vrdesc->name);
> +			return PTR_ERR(rdev);

Hi,

Nit: (in case of v6)

	dev_err_probe()?

> +		}
> +	}
> +
> +	return 0;
> +}

..

CJ