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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