hwmon: (pmbus/adp1050) Add regulator support for ltp8800

Add regulator support for the single-channel LTP8800-1A/-2/-4A
150A/135A/200A DC/DC µModule Regulator.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@analog.com>
Link: https://lore.kernel.org/r/20250709-adp1051-v5-3-539254692252@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/pmbus/Kconfig

@@ -67,6 +67,15 @@ config SENSORS_ADP1050
 	  This driver can also be built as a module. If so, the module will
 	  be called adp1050.
 
+config SENSORS_ADP1050_REGULATOR
+	bool "Regulator support for ADP1050 and compatibles"
+	depends on SENSORS_ADP1050 && REGULATOR
+	help
+	  If you say yes here you get regulator support for Analog Devices
+	  LTP8800-1A, LTP8800-4A, and LTP8800-2. LTP8800 is a family of DC/DC
+	  µModule regulators that can provide microprocessor power from 54V
+	  power distribution architecture.
+
 config SENSORS_BEL_PFE
 	tristate "Bel PFE Compatible Power Supplies"
 	help

drivers/hwmon/pmbus/adp1050.c

@@ -11,6 +11,12 @@
 
 #include "pmbus.h"
 
+#if IS_ENABLED(CONFIG_SENSORS_ADP1050_REGULATOR)
+static const struct regulator_desc adp1050_reg_desc[] = {
+	PMBUS_REGULATOR_ONE("vout"),
+};
+#endif /* CONFIG_SENSORS_ADP1050_REGULATOR */
+
 static struct pmbus_driver_info adp1050_info = {
 	.pages = 1,
 	.format[PSC_VOLTAGE_IN] = linear,
@@ -65,6 +71,10 @@ static struct pmbus_driver_info ltp8800_info = {
 		| PMBUS_HAVE_STATUS_VOUT
 		| PMBUS_HAVE_STATUS_INPUT
 		| PMBUS_HAVE_STATUS_TEMP,
+#if IS_ENABLED(CONFIG_SENSORS_ADP1050_REGULATOR)
+	.num_regulators = 1,
+	.reg_desc = adp1050_reg_desc,
+#endif
 };
 
 static int adp1050_probe(struct i2c_client *client)