v4.19.13 snapshot.
diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h
new file mode 100644
index 0000000..48918be
--- /dev/null
+++ b/include/linux/regulator/fixed.h
@@ -0,0 +1,76 @@
+/*
+ * fixed.h
+ *
+ * Copyright 2008 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * Copyright (c) 2009 Nokia Corporation
+ * Roger Quadros <ext-roger.quadros@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ */
+
+#ifndef __REGULATOR_FIXED_H
+#define __REGULATOR_FIXED_H
+
+struct regulator_init_data;
+
+/**
+ * struct fixed_voltage_config - fixed_voltage_config structure
+ * @supply_name: Name of the regulator supply
+ * @input_supply: Name of the input regulator supply
+ * @microvolts: Output voltage of regulator
+ * @gpio: GPIO to use for enable control
+ * set to -EINVAL if not used
+ * @startup_delay: Start-up time in microseconds
+ * @gpio_is_open_drain: Gpio pin is open drain or normal type.
+ * If it is open drain type then HIGH will be set
+ * through PULL-UP with setting gpio as input
+ * and low will be set as gpio-output with driven
+ * to low. For non-open-drain case, the gpio will
+ * will be in output and drive to low/high accordingly.
+ * @enable_high: Polarity of enable GPIO
+ * 1 = Active high, 0 = Active low
+ * @enabled_at_boot: Whether regulator has been enabled at
+ * boot or not. 1 = Yes, 0 = No
+ * This is used to keep the regulator at
+ * the default state
+ * @init_data: regulator_init_data
+ *
+ * This structure contains fixed voltage regulator configuration
+ * information that must be passed by platform code to the fixed
+ * voltage regulator driver.
+ */
+struct fixed_voltage_config {
+ const char *supply_name;
+ const char *input_supply;
+ int microvolts;
+ int gpio;
+ unsigned startup_delay;
+ unsigned gpio_is_open_drain:1;
+ unsigned enable_high:1;
+ unsigned enabled_at_boot:1;
+ struct regulator_init_data *init_data;
+};
+
+struct regulator_consumer_supply;
+
+#if IS_ENABLED(CONFIG_REGULATOR)
+struct platform_device *regulator_register_always_on(int id, const char *name,
+ struct regulator_consumer_supply *supplies, int num_supplies, int uv);
+#else
+static inline struct platform_device *regulator_register_always_on(int id, const char *name,
+ struct regulator_consumer_supply *supplies, int num_supplies, int uv)
+{
+ return NULL;
+}
+#endif
+
+#define regulator_register_fixed(id, s, ns) regulator_register_always_on(id, \
+ "fixed-dummy", s, ns, 0)
+
+#endif