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b2f0caf160
We've removed kernel option EXT_RESOURCES almost two years ago. While it was ok to have some code under a common 'extres' subdirectory at first, we now have a lot of consumer of it and we made it mandatory so no need to have it under a cryptic name. Reviewed by: emaste, imp Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D43194
156 lines
5.5 KiB
C
156 lines
5.5 KiB
C
/*-
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* Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _DEV_REGULATOR_H_
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#define _DEV_REGULATOR_H_
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#include "opt_platform.h"
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#include <sys/kobj.h>
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#include <sys/sysctl.h>
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#ifdef FDT
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#include <dev/ofw/ofw_bus.h>
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#endif
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#include "regnode_if.h"
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SYSCTL_DECL(_hw_regulator);
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#define REGULATOR_FLAGS_STATIC 0x00000001 /* Static strings */
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#define REGULATOR_FLAGS_NOT_DISABLE 0x00000002 /* Cannot be disabled */
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#define REGULATOR_STATUS_ENABLED 0x00000001
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#define REGULATOR_STATUS_OVERCURRENT 0x00000002
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typedef struct regulator *regulator_t;
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/* Standard regulator parameters. */
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struct regnode_std_param {
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int min_uvolt; /* In uV */
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int max_uvolt; /* In uV */
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int min_uamp; /* In uA */
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int max_uamp; /* In uA */
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int ramp_delay; /* In uV/usec */
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int enable_delay; /* In usec */
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bool boot_on; /* Is enabled on boot */
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bool always_on; /* Must be enabled */
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int enable_active_high;
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};
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/* Initialization parameters. */
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struct regnode_init_def {
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char *name; /* Regulator name */
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char *parent_name; /* Name of parent regulator */
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struct regnode_std_param std_param; /* Standard parameters */
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intptr_t id; /* Regulator ID */
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int flags; /* Flags */
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#ifdef FDT
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phandle_t ofw_node; /* OFW node of regulator */
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#endif
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};
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struct regulator_range {
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int min_uvolt;
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int step_uvolt;
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uint8_t min_sel;
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uint8_t max_sel;
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};
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#define REG_RANGE_INIT(_min_sel, _max_sel, _min_uvolt, _step_uvolt) { \
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.min_sel = _min_sel, \
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.max_sel = _max_sel, \
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.min_uvolt = _min_uvolt, \
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.step_uvolt = _step_uvolt, \
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}
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/*
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* Shorthands for constructing method tables.
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*/
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#define REGNODEMETHOD KOBJMETHOD
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#define REGNODEMETHOD_END KOBJMETHOD_END
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#define regnode_method_t kobj_method_t
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#define regnode_class_t kobj_class_t
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DECLARE_CLASS(regnode_class);
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/* Providers interface. */
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struct regnode *regnode_create(device_t pdev, regnode_class_t regnode_class,
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struct regnode_init_def *def);
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struct regnode *regnode_register(struct regnode *regnode);
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const char *regnode_get_name(struct regnode *regnode);
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const char *regnode_get_parent_name(struct regnode *regnode);
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struct regnode *regnode_get_parent(struct regnode *regnode);
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int regnode_get_flags(struct regnode *regnode);
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void *regnode_get_softc(struct regnode *regnode);
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device_t regnode_get_device(struct regnode *regnode);
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struct regnode_std_param *regnode_get_stdparam(struct regnode *regnode);
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void regnode_topo_unlock(void);
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void regnode_topo_xlock(void);
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void regnode_topo_slock(void);
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int regnode_enable(struct regnode *regnode);
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int regnode_disable(struct regnode *regnode);
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int regnode_stop(struct regnode *regnode, int depth);
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int regnode_status(struct regnode *regnode, int *status);
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int regnode_get_voltage(struct regnode *regnode, int *uvolt);
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int regnode_set_voltage(struct regnode *regnode, int min_uvolt, int max_uvolt);
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int regnode_set_constraint(struct regnode *regnode);
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/* Standard method that aren't default */
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int regnode_method_check_voltage(struct regnode *regnode, int uvolt);
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#ifdef FDT
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phandle_t regnode_get_ofw_node(struct regnode *regnode);
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#endif
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/* Consumers interface. */
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int regulator_get_by_name(device_t cdev, const char *name,
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regulator_t *regulator);
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int regulator_get_by_id(device_t cdev, device_t pdev, intptr_t id,
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regulator_t *regulator);
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int regulator_release(regulator_t regulator);
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const char *regulator_get_name(regulator_t regulator);
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int regulator_enable(regulator_t reg);
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int regulator_disable(regulator_t reg);
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int regulator_stop(regulator_t reg);
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int regulator_status(regulator_t reg, int *status);
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int regulator_get_voltage(regulator_t reg, int *uvolt);
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int regulator_set_voltage(regulator_t reg, int min_uvolt, int max_uvolt);
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int regulator_check_voltage(regulator_t reg, int uvolt);
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#ifdef FDT
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int regulator_get_by_ofw_property(device_t dev, phandle_t node, char *name,
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regulator_t *reg);
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int regulator_parse_ofw_stdparam(device_t dev, phandle_t node,
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struct regnode_init_def *def);
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#endif
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/* Utility functions */
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int regulator_range_volt_to_sel8(struct regulator_range *ranges, int nranges,
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int min_uvolt, int max_uvolt, uint8_t *out_sel);
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int regulator_range_sel8_to_volt(struct regulator_range *ranges, int nranges,
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uint8_t sel, int *volt);
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#endif /* _DEV_REGULATOR_H_ */
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