2 * Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #ifndef _DEV_EXTRES_REGULATOR_H_
30 #define _DEV_EXTRES_REGULATOR_H_
31 #include "opt_platform.h"
35 #include <dev/ofw/ofw_bus.h>
37 #include "regnode_if.h"
39 #define REGULATOR_FLAGS_STATIC 0x00000001 /* Static strings */
40 #define REGULATOR_FLAGS_NOT_DISABLE 0x00000002 /* Cannot be disabled */
42 #define REGULATOR_STATUS_ENABLED 0x00000001
43 #define REGULATOR_STATUS_OVERCURRENT 0x00000002
45 typedef struct regulator *regulator_t;
47 /* Standard regulator parameters. */
48 struct regnode_std_param {
49 int min_uvolt; /* In uV */
50 int max_uvolt; /* In uV */
51 int min_uamp; /* In uA */
52 int max_uamp; /* In uA */
53 int ramp_delay; /* In uV/usec */
54 int enable_delay; /* In usec */
55 bool boot_on; /* Is enabled on boot */
56 bool always_on; /* Must be enabled */
57 int enable_active_high;
60 /* Initialization parameters. */
61 struct regnode_init_def {
62 char *name; /* Regulator name */
63 char *parent_name; /* Name of parent regulator */
64 struct regnode_std_param std_param; /* Standard parameters */
65 intptr_t id; /* Regulator ID */
66 int flags; /* Flags */
68 phandle_t ofw_node; /* OFW node of regulator */
72 struct regulator_range {
79 #define REG_RANGE_INIT(_min_sel, _max_sel, _min_uvolt, _step_uvolt) { \
80 .min_sel = _min_sel, \
81 .max_sel = _max_sel, \
82 .min_uvolt = _min_uvolt, \
83 .step_uvolt = _step_uvolt, \
87 * Shorthands for constructing method tables.
89 #define REGNODEMETHOD KOBJMETHOD
90 #define REGNODEMETHOD_END KOBJMETHOD_END
91 #define regnode_method_t kobj_method_t
92 #define regnode_class_t kobj_class_t
93 DECLARE_CLASS(regnode_class);
95 /* Providers interface. */
96 struct regnode *regnode_create(device_t pdev, regnode_class_t regnode_class,
97 struct regnode_init_def *def);
98 struct regnode *regnode_register(struct regnode *regnode);
99 const char *regnode_get_name(struct regnode *regnode);
100 const char *regnode_get_parent_name(struct regnode *regnode);
101 struct regnode *regnode_get_parent(struct regnode *regnode);
102 int regnode_get_flags(struct regnode *regnode);
103 void *regnode_get_softc(struct regnode *regnode);
104 device_t regnode_get_device(struct regnode *regnode);
105 struct regnode_std_param *regnode_get_stdparam(struct regnode *regnode);
106 void regnode_topo_unlock(void);
107 void regnode_topo_xlock(void);
108 void regnode_topo_slock(void);
110 int regnode_enable(struct regnode *regnode);
111 int regnode_disable(struct regnode *regnode);
112 int regnode_stop(struct regnode *regnode, int depth);
113 int regnode_status(struct regnode *regnode, int *status);
114 int regnode_get_voltage(struct regnode *regnode, int *uvolt);
115 int regnode_set_voltage(struct regnode *regnode, int min_uvolt, int max_uvolt);
117 phandle_t regnode_get_ofw_node(struct regnode *regnode);
120 /* Consumers interface. */
121 int regulator_get_by_name(device_t cdev, const char *name,
122 regulator_t *regulator);
123 int regulator_get_by_id(device_t cdev, device_t pdev, intptr_t id,
124 regulator_t *regulator);
125 int regulator_release(regulator_t regulator);
126 const char *regulator_get_name(regulator_t regulator);
127 int regulator_enable(regulator_t reg);
128 int regulator_disable(regulator_t reg);
129 int regulator_stop(regulator_t reg);
130 int regulator_status(regulator_t reg, int *status);
131 int regulator_get_voltage(regulator_t reg, int *uvolt);
132 int regulator_set_voltage(regulator_t reg, int min_uvolt, int max_uvolt);
135 int regulator_get_by_ofw_property(device_t dev, phandle_t node, char *name,
137 int regulator_parse_ofw_stdparam(device_t dev, phandle_t node,
138 struct regnode_init_def *def);
141 /* Utility functions */
142 int regulator_range_volt_to_sel8(struct regulator_range *ranges, int nranges,
143 int min_uvolt, int max_uvolt, uint8_t *out_sel);
144 int regulator_range_sel8_to_volt(struct regulator_range *ranges, int nranges,
145 uint8_t sel, int *volt);
147 #endif /* _DEV_EXTRES_REGULATOR_H_ */