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- /*
- * machine.h -- SoC Regulator support, machine/board driver API.
- *
- * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
- *
- * Author: Liam Girdwood <lg@opensource.wolfsonmicro.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Regulator Machine/Board Interface.
- */
-
- #ifndef __LINUX_REGULATOR_MACHINE_H_
- #define __LINUX_REGULATOR_MACHINE_H_
-
- #include <linux/regulator/consumer.h>
- #include <linux/suspend.h>
-
- struct regulator;
-
- /*
- * Regulator operation constraint flags. These flags are used to enable
- * certain regulator operations and can be OR'ed together.
- *
- * VOLTAGE: Regulator output voltage can be changed by software on this
- * board/machine.
- * CURRENT: Regulator output current can be changed by software on this
- * board/machine.
- * MODE: Regulator operating mode can be changed by software on this
- * board/machine.
- * STATUS: Regulator can be enabled and disabled.
- * DRMS: Dynamic Regulator Mode Switching is enabled for this regulator.
- */
-
- #define REGULATOR_CHANGE_VOLTAGE 0x1
- #define REGULATOR_CHANGE_CURRENT 0x2
- #define REGULATOR_CHANGE_MODE 0x4
- #define REGULATOR_CHANGE_STATUS 0x8
- #define REGULATOR_CHANGE_DRMS 0x10
-
- /**
- * struct regulator_state - regulator state during low power syatem states
- *
- * This describes a regulators state during a system wide low power state.
- */
- struct regulator_state {
- int uV; /* suspend voltage */
- unsigned int mode; /* suspend regulator operating mode */
- int enabled; /* is regulator enabled in this suspend state */
- };
-
- /**
- * struct regulation_constraints - regulator operating constraints.
- *
- * This struct describes regulator and board/machine specific constraints.
- */
- struct regulation_constraints {
-
- char *name;
-
- /* voltage output range (inclusive) - for voltage control */
- int min_uV;
- int max_uV;
-
- /* current output range (inclusive) - for current control */
- int min_uA;
- int max_uA;
-
- /* valid regulator operating modes for this machine */
- unsigned int valid_modes_mask;
-
- /* valid operations for regulator on this machine */
- unsigned int valid_ops_mask;
-
- /* regulator input voltage - only if supply is another regulator */
- int input_uV;
-
- /* regulator suspend states for global PMIC STANDBY/HIBERNATE */
- struct regulator_state state_disk;
- struct regulator_state state_mem;
- struct regulator_state state_standby;
- suspend_state_t initial_state; /* suspend state to set at init */
-
- /* constriant flags */
- unsigned always_on:1; /* regulator never off when system is on */
- unsigned boot_on:1; /* bootloader/firmware enabled regulator */
- unsigned apply_uV:1; /* apply uV constraint iff min == max */
- };
-
- /**
- * struct regulator_consumer_supply - supply -> device mapping
- *
- * This maps a supply name to a device.
- */
- struct regulator_consumer_supply {
- struct device *dev; /* consumer */
- const char *supply; /* consumer supply - e.g. "vcc" */
- };
-
- /**
- * struct regulator_init_data - regulator platform initialisation data.
- *
- * Initialisation constraints, our supply and consumers supplies.
- */
- struct regulator_init_data {
- struct device *supply_regulator_dev; /* or NULL for LINE */
-
- struct regulation_constraints constraints;
-
- int num_consumer_supplies;
- struct regulator_consumer_supply *consumer_supplies;
-
- /* optional regulator machine specific init */
- int (*regulator_init)(void *driver_data);
- void *driver_data; /* core does not touch this */
- };
-
- int regulator_suspend_prepare(suspend_state_t state);
-
- #endif
-