net: pse-pd: pd692x0: Add support for controller and manager power supplies

Add support for managing the VDD and VDDA power supplies for the PD692x0
PSE controller, as well as the VAUX5 and VAUX3P3 power supplies for the
PD6920x PSE managers.

Signed-off-by: Kory Maincent (Dent Project) <kory.maincent@bootlin.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20250617-feature_poe_port_prio-v14-10-78a1a645e2ee@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/pse-pd/pd692x0.c b/drivers/net/pse-pd/pd692x0.c
index a4766c18f3338a83d8b87127aa36b4361f816ff0..4de004813560d6620b2c0f0b216f346d6554cf32 100644 (file)
--- a/drivers/net/pse-pd/pd692x0.c
+++ b/drivers/net/pse-pd/pd692x0.c
@@ -976,8 +976,10 @@ pd692x0_register_managers_regulator(struct pd692x0_priv *priv,
        reg_name_len = strlen(dev_name(dev)) + 23;
 
        for (i = 0; i < nmanagers; i++) {
+               static const char * const regulators[] = { "vaux5", "vaux3p3" };
                struct regulator_dev *rdev;
                char *reg_name;
+               int ret;
 
                reg_name = devm_kzalloc(dev, reg_name_len, GFP_KERNEL);
                if (!reg_name)
@@ -988,6 +990,17 @@ pd692x0_register_managers_regulator(struct pd692x0_priv *priv,
                if (IS_ERR(rdev))
                        return PTR_ERR(rdev);
 
+               /* VMAIN is described as main supply for the manager.
+                * Add other VAUX power supplies and link them to the
+                * virtual device rdev->dev.
+                */
+               ret = devm_regulator_bulk_get_enable(&rdev->dev,
+                                                    ARRAY_SIZE(regulators),
+                                                    regulators);
+               if (ret)
+                       return dev_err_probe(&rdev->dev, ret,
+                                            "Failed to enable regulators\n");
+
                priv->manager_reg[i] = rdev;
        }
 
@@ -1640,6 +1653,7 @@ static const struct fw_upload_ops pd692x0_fw_ops = {
 
 static int pd692x0_i2c_probe(struct i2c_client *client)
 {
+       static const char * const regulators[] = { "vdd", "vdda" };
        struct pd692x0_msg msg, buf = {0}, zero = {0};
        struct device *dev = &client->dev;
        struct pd692x0_msg_ver ver;
@@ -1647,6 +1661,12 @@ static int pd692x0_i2c_probe(struct i2c_client *client)
        struct fw_upload *fwl;
        int ret;
 
+       ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulators),
+                                            regulators);
+       if (ret)
+               return dev_err_probe(dev, ret,
+                                    "Failed to enable regulators\n");
+
        if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
                dev_err(dev, "i2c check functionality failed\n");
                return -ENXIO;