regulator: ROHM bd7xxxx: Do not depend on parent driver data

The ROHM PMIC regulator drivers only need the regmap pointer from
the parent device. Regmap can be obtained via dev_get_regmap()
so do not require parent to populate driver data for that.

Signed-off-by: Matti Vaittinen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/bd70528-regulator.c

···
 
 static int bd70528_probe(struct platform_device *pdev)
 {
-	struct rohm_regmap_dev *bd70528;
 	int i;
 	struct regulator_config config = {
 		.dev = pdev->dev.parent,
 	};
 
-	bd70528 = dev_get_drvdata(pdev->dev.parent);
-	if (!bd70528) {
-		dev_err(&pdev->dev, "No MFD driver data\n");
-		return -EINVAL;
-	}
-
-	config.regmap = bd70528->regmap;
+	config.regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!config.regmap)
+		return -ENODEV;
 
 	for (i = 0; i < ARRAY_SIZE(bd70528_desc); i++) {
 		struct regulator_dev *rdev;

drivers/regulator/bd71828-regulator.c

···
 
 static int bd71828_probe(struct platform_device *pdev)
 {
-	struct rohm_regmap_dev *bd71828;
 	int i, j, ret;
 	struct regulator_config config = {
 		.dev = pdev->dev.parent,
 	};
 
-	bd71828 = dev_get_drvdata(pdev->dev.parent);
-	if (!bd71828) {
-		dev_err(&pdev->dev, "No MFD driver data\n");
-		return -EINVAL;
-	}
-
-	config.regmap = bd71828->regmap;
+	config.regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!config.regmap)
+		return -ENODEV;
 
 	for (i = 0; i < ARRAY_SIZE(bd71828_rdata); i++) {
 		struct regulator_dev *rdev;
···
 			return PTR_ERR(rdev);
 		}
 		for (j = 0; j < rd->reg_init_amnt; j++) {
-			ret = regmap_update_bits(bd71828->regmap,
+			ret = regmap_update_bits(config.regmap,
 						 rd->reg_inits[j].reg,
 						 rd->reg_inits[j].mask,
 						 rd->reg_inits[j].val);