Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / regulator / gpio-regulator.h

diff --git a/kernel/include/linux/regulator/gpio-regulator.h b/kernel/include/linux/regulator/gpio-regulator.h
new file mode 100644 (file)
index 0000000..19fbd26
--- /dev/null
+++ b/kernel/include/linux/regulator/gpio-regulator.h
@@ -0,0 +1,87 @@
+/*
+ * gpio-regulator.h
+ *
+ * Copyright 2011 Heiko Stuebner <heiko@sntech.de>
+ *
+ * based on 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_GPIO_H
+#define __REGULATOR_GPIO_H
+
+struct regulator_init_data;
+
+enum regulator_type;
+
+/**
+ * struct gpio_regulator_state - state description
+ * @value:             microvolts or microamps
+ * @gpios:             bitfield of gpio target-states for the value
+ *
+ * This structure describes a supported setting of the regulator
+ * and the necessary gpio-state to achieve it.
+ *
+ * The n-th bit in the bitfield describes the state of the n-th GPIO
+ * from the gpios-array defined in gpio_regulator_config below.
+ */
+struct gpio_regulator_state {
+       int value;
+       int gpios;
+};
+
+/**
+ * struct gpio_regulator_config - config structure
+ * @supply_name:       Name of the regulator supply
+ * @enable_gpio:       GPIO to use for enable control
+ *                     set to -EINVAL if not used
+ * @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
+ * @startup_delay:     Start-up time in microseconds
+ * @gpios:             Array containing the gpios needed to control
+ *                     the setting of the regulator
+ * @nr_gpios:          Number of gpios
+ * @states:            Array of gpio_regulator_state entries describing
+ *                     the gpio state for specific voltages
+ * @nr_states:         Number of states available
+ * @regulator_type:    either REGULATOR_CURRENT or REGULATOR_VOLTAGE
+ * @init_data:         regulator_init_data
+ *
+ * This structure contains gpio-voltage regulator configuration
+ * information that must be passed by platform code to the
+ * gpio-voltage regulator driver.
+ */
+struct gpio_regulator_config {
+       const char *supply_name;
+
+       int enable_gpio;
+       unsigned enable_high:1;
+       unsigned enabled_at_boot:1;
+       unsigned startup_delay;
+
+       struct gpio *gpios;
+       int nr_gpios;
+
+       struct gpio_regulator_state *states;
+       int nr_states;
+
+       enum regulator_type type;
+       struct regulator_init_data *init_data;
+};
+
+#endif