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Diffstat (limited to 'include/linux/regulator/regulator-platform.h')
| -rw-r--r-- | include/linux/regulator/regulator-platform.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/include/linux/regulator/regulator-platform.h b/include/linux/regulator/regulator-platform.h new file mode 100644 index 000000000000..7f57e035eb34 --- /dev/null +++ b/include/linux/regulator/regulator-platform.h @@ -0,0 +1,102 @@ +/* + * regulator-platform.h -- SoC Regulator support. + * + * Copyright (C) 2007 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 Platform Interface. + */ + + +#ifndef __LINUX_REGULATOR_PLATFORM_H_ +#define __LINUX_REGULATOR_PLATFORM_H_ + +#include <linux/regulator/regulator.h> + +struct regulator; + +/* + * Regulator operations. + * + * @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 regulation_constraints - regulator operating constraints. + * + * This struct describes regulator and board/machine specific constraints. + */ +struct regulation_constraints { + + char *name; + + /* voltage output range - for voltage control */ + int min_uV; + int max_uV; + + /* current output range - 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; + + /* input voltage */ + int input_uV; +}; + +/** + * regulator_set_platform_source - set regulator source regulator + * @regulator: regulator source + * @parent: source or parent regulator + * + * Called by platform initialisation code to set the source supply or "parent" + * regulator for this regulator. + */ +int regulator_set_platform_source(struct regulator *reg, + struct regulator *parent); + +/** + * regulator_get_platform_source - get regulator source regulator + * @regulator: regulator source + * + * Returns the regulator supply regulator or NULL if no supply regulator + * exists (i.e the regulator is supplied directly from USB, Line, Battery, etc) + */ +struct regulator *regulator_get_platform_source(struct regulator *regulator); + + +/** + * regulator_set_platform_constraints - sets regulator constraints + * @regulator: regulator source + * + * Allows platform initialisation code to define and constrain regulator + * circuits e.g. valid voltage/current ranges, etc. + * NOTE: Constraints must be set by platform code in order for some + * regulator operations to proceed i.e. set_voltage, set_current, set_mode. + */ +int regulator_set_platform_constraints(const char *regulator_name, + struct regulation_constraints *constraints); + +#endif |