Hello Krzysztof,
On 10/30/2014 12:20 PM, Krzysztof Kozlowski wrote:
> static int max77802_pmic_probe(struct platform_device *pdev)
> {
> struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
> - struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev);
> struct max77802_regulator_prv *max77802;
> - int i, ret = 0, val;
> + int i, val;
> struct regulator_config config = { };
>
> - /* This is allocated by the MFD driver */
> - if (!pdata) {
> - dev_err(&pdev->dev, "no platform data found for regulator\n");
> - return -ENODEV;
> - }
> -
> max77802 = devm_kzalloc(&pdev->dev,
> sizeof(struct max77802_regulator_prv),
> GFP_KERNEL);
> if (!max77802)
> return -ENOMEM;
>
> - if (iodev->dev->of_node) {
> - ret = max77802_pmic_dt_parse_pdata(pdev, pdata);
> - if (ret)
> - return ret;
> + if (!pdev->dev.of_node) {
> + /*
> + * Backward DTS compatiblity where regulator driver had not
> + * a compatible property for itself.
> + */
> + if (!iodev->dev->of_node) {
> + dev_err(&pdev->dev, "No OF node for driver and its
> parent\n");
> + return -EINVAL;
> + }
> + pdev->dev.of_node = of_get_child_by_name(iodev->dev->of_node,
> + "regulators");
> + max77802->missing_of_node = true;
> }
I may be missing something but I don't understand why a compatible string
for the regulators sub-node is needed. Isn't enough to just fill the
.regulators_node field in the struct regulator_desc? e.g:
.regulators_node = of_match_ptr("regulators") for max77802
.regulators_node = of_match_ptr("voltage-regulators") for max77686
AFAIU this should be enough for the core to extract the init_data and will
make your change much more simpler and you can drop patches 1-3 and 13-14.
Or maybe I misread the regulator_of_get_init_data() function?
Best regards,
Javier
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