linux-kernel - Re: [PATCH v3 15/18] mfd: hi6421-spmi-pmic: move driver from staging

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Date:   Tue, 19 Jan 2021 13:46:22 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mayulong <mayulong1@...wei.com>,
        Rob Herring <robh+dt@...nel.org>, devel@...verdev.osuosl.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 15/18] mfd: hi6421-spmi-pmic: move driver from staging

On Tue, Jan 19, 2021 at 11:14:20AM +0100, Mauro Carvalho Chehab wrote:

> +int hi6421_spmi_pmic_read(struct hi6421_spmi_pmic *pmic, int reg)
> +{
> +	struct spmi_device *pdev;
> +	u8 read_value = 0;
> +	u32 ret;
> +
> +	pdev = to_spmi_device(pmic->dev);
> +	if (!pdev) {
> +		pr_err("%s: pdev get failed!\n", __func__);
> +		return -ENODEV;
> +	}
> +
> +	ret = spmi_ext_register_readl(pdev, reg, &read_value, 1);
> +	if (ret) {
> +		pr_err("%s: spmi_ext_register_readl failed!\n", __func__);
> +		return ret;
> +	}
> +	return read_value;
> +}
> +EXPORT_SYMBOL(hi6421_spmi_pmic_read);

The I/O here looks a lot like regmap_spmi_ext.

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