Make use of the devm_regulator_set_register instead of registering each
regulator provided by the PMIC.

This also solves a self dependency issue where one regulator of the PMIC
is used as a supply for anoher regulator provided by the same PMIC.

Signed-off-by: Boris BREZILLON <boris.brezil...@free-electrons.com>
---
 drivers/regulator/axp20x-regulator.c | 59 ++++++++++++++----------------------
 1 file changed, 23 insertions(+), 36 deletions(-)

diff --git a/drivers/regulator/axp20x-regulator.c 
b/drivers/regulator/axp20x-regulator.c
index d42bf6d..e8f0df7 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -301,66 +301,53 @@ static int axp20x_set_dcdc_workmode(struct regulator_dev 
*rdev, int id, u32 work
 
 static int axp20x_regulator_probe(struct platform_device *pdev)
 {
-       struct regulator_dev *rdev;
+       struct regulator_set *rset;
        struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
-       struct regulator_config config = { };
-       struct regulator_init_data *init_data;
+       struct regulator_set_config config;
        struct of_regulator_match *matches;
-       int nmatches;
-       const struct regulator_desc *regulators;
-       int nregulators;
        int ret, i;
        u32 workmode;
 
+       memset(&config, 0, sizeof(config));
+       config.dev = &pdev->dev;
+       config.regmap = axp20x->regmap;
        if (axp20x->variant == AXP221_ID) {
                matches = axp22x_matches;
-               nmatches = ARRAY_SIZE(axp22x_matches);
-               regulators = axp22x_regulators;
-               nregulators = AXP22X_REG_ID_MAX;
+               config.descs = axp22x_regulators;
+               config.nregulators = AXP22X_REG_ID_MAX;
        } else {
                matches = axp20x_matches;
-               nmatches = ARRAY_SIZE(axp20x_matches);
-               regulators = axp20x_regulators;
-               nregulators = AXP20X_REG_ID_MAX;
+               config.descs = axp20x_regulators;
+               config.nregulators = AXP20X_REG_ID_MAX;
        }
+       config.matches = matches;
 
        /*
         * Reset matches table (this table might have been modified by a
         * previous AXP2xx device probe).
         */
-       for (i = 0; i < nmatches; i++) {
+       for (i = 0; i < config.nregulators; i++) {
                matches[i].init_data = NULL;
                matches[i].of_node = NULL;
        }
 
-       ret = axp20x_regulator_parse_dt(pdev, matches, nmatches);
+       ret = axp20x_regulator_parse_dt(pdev, matches,
+                                       config.nregulators);
        if (ret)
                return ret;
 
-       for (i = 0; i < AXP20X_REG_ID_MAX; i++) {
-               init_data = matches[i].init_data;
+       rset = devm_regulator_set_register(&pdev->dev, &config);
+       if (IS_ERR(rset))
+               return PTR_ERR(rset);
 
-               config.dev = &pdev->dev;
-               config.init_data = init_data;
-               config.regmap = axp20x->regmap;
-               config.of_node = matches[i].of_node;
-
-               rdev = devm_regulator_register(&pdev->dev, &regulators[i],
-                                              &config);
-               if (IS_ERR(rdev)) {
-                       dev_err(&pdev->dev, "Failed to register %s\n",
-                               regulators[i].name);
-
-                       return PTR_ERR(rdev);
-               }
-
-               ret = of_property_read_u32(matches[i].of_node, 
"x-powers,dcdc-workmode",
+       for (i = 0; i < rset->nregulators; i++) {
+               ret = of_property_read_u32(config.matches[i].of_node,
+                                          "x-powers,dcdc-workmode",
                                           &workmode);
-               if (!ret) {
-                       if (axp20x_set_dcdc_workmode(rdev, i, workmode))
-                               dev_err(&pdev->dev, "Failed to set workmode on 
%s\n",
-                                       regulators[i].name);
-               }
+               if (!ret &&
+                   axp20x_set_dcdc_workmode(rset->regulators[i], i, workmode))
+                       dev_err(&pdev->dev, "Failed to set workmode on %s\n",
+                               config.descs[i].name);
        }
 
        return 0;
-- 
1.8.3.2

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