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regulator: regulator driver interface

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This allows regulator drivers to register their regulators and provide
operations to the core. It also has a notifier call chain for propagating
regulator events to clients.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Liam Girdwood 2008-04-30 15:42:28 +01:00
parent e2ce4eaa76
commit 571a354b15
1 changed files with 99 additions and 0 deletions
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include/linux/regulator/driver.h Normal file
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/*
* driver.h -- SoC Regulator driver support.
*
* 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 Driver Interface.
*/
#ifndef __LINUX_REGULATOR_DRIVER_H_
#define __LINUX_REGULATOR_DRIVER_H_
#include <linux/device.h>
#include <linux/regulator/consumer.h>
struct regulator_constraints;
struct regulator_dev;
/**
* struct regulator_ops - regulator operations.
*
* This struct describes regulator operations.
*/
struct regulator_ops {
/* get/set regulator voltage */
int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV);
int (*get_voltage) (struct regulator_dev *);
/* get/set regulator current */
int (*set_current_limit) (struct regulator_dev *,
int min_uA, int max_uA);
int (*get_current_limit) (struct regulator_dev *);
/* enable/disable regulator */
int (*enable) (struct regulator_dev *);
int (*disable) (struct regulator_dev *);
int (*is_enabled) (struct regulator_dev *);
/* get/set regulator operating mode (defined in regulator.h) */
int (*set_mode) (struct regulator_dev *, unsigned int mode);
unsigned int (*get_mode) (struct regulator_dev *);
/* get most efficient regulator operating mode for load */
unsigned int (*get_optimum_mode) (struct regulator_dev *, int input_uV,
int output_uV, int load_uA);
/* the operations below are for configuration of regulator state when
* it's parent PMIC enters a global STANBY/HIBERNATE state */
/* set regulator suspend voltage */
int (*set_suspend_voltage) (struct regulator_dev *, int uV);
/* enable/disable regulator in suspend state */
int (*set_suspend_enable) (struct regulator_dev *);
int (*set_suspend_disable) (struct regulator_dev *);
/* set regulator suspend operating mode (defined in regulator.h) */
int (*set_suspend_mode) (struct regulator_dev *, unsigned int mode);
};
/*
* Regulators can either control voltage or current.
*/
enum regulator_type {
REGULATOR_VOLTAGE,
REGULATOR_CURRENT,
};
/**
* struct regulator_desc - Regulator descriptor
*
*/
struct regulator_desc {
const char *name;
int id;
struct regulator_ops *ops;
int irq;
enum regulator_type type;
struct module *owner;
};
struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
void *reg_data);
void regulator_unregister(struct regulator_dev *rdev);
int regulator_notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data);
void *rdev_get_drvdata(struct regulator_dev *rdev);
int rdev_get_id(struct regulator_dev *rdev);
#endif