1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-09-23 GuEe-GUI first version
*/
#include "regulator_dm.h"
struct regulator_fixed
{
struct rt_regulator_node parent;
struct rt_regulator_param param;
rt_base_t enable_pin;
const char *input_supply;
};
#define raw_to_regulator_fixed(raw) rt_container_of(raw, struct regulator_fixed, parent)
static rt_err_t regulator_fixed_enable(struct rt_regulator_node *reg_np)
{
struct regulator_fixed *rf = raw_to_regulator_fixed(reg_np);
struct rt_regulator_param *param = &rf->param;
if (rf->enable_pin < 0 || param->always_on)
{
return RT_EOK;
}
rt_pin_mode(rf->enable_pin, PIN_MODE_OUTPUT);
rt_pin_write(rf->enable_pin, param->enable_active_high ? PIN_HIGH : PIN_LOW);
return RT_EOK;
}
static rt_err_t regulator_fixed_disable(struct rt_regulator_node *reg_np)
{
struct regulator_fixed *rf = raw_to_regulator_fixed(reg_np);
struct rt_regulator_param *param = &rf->param;
if (rf->enable_pin < 0 || param->always_on)
{
return RT_EOK;
}
rt_pin_mode(rf->enable_pin, PIN_MODE_OUTPUT);
rt_pin_write(rf->enable_pin, param->enable_active_high ? PIN_LOW: PIN_HIGH);
return RT_EOK;
}
static rt_bool_t regulator_fixed_is_enabled(struct rt_regulator_node *reg_np)
{
rt_uint8_t active;
struct regulator_fixed *rf = raw_to_regulator_fixed(reg_np);
struct rt_regulator_param *param = &rf->param;
if (rf->enable_pin < 0 || param->always_on)
{
return RT_TRUE;
}
rt_pin_mode(rf->enable_pin, PIN_MODE_INPUT);
active = rt_pin_read(rf->enable_pin);
if (param->enable_active_high)
{
return active == PIN_HIGH;
}
return active == PIN_LOW;
}
static int regulator_fixed_get_voltage(struct rt_regulator_node *reg_np)
{
struct regulator_fixed *rf = raw_to_regulator_fixed(reg_np);
return rf->param.min_uvolt + (rf->param.max_uvolt - rf->param.min_uvolt) / 2;
}
static const struct rt_regulator_ops regulator_fixed_ops =
{
.enable = regulator_fixed_enable,
.disable = regulator_fixed_disable,
.is_enabled = regulator_fixed_is_enabled,
.get_voltage = regulator_fixed_get_voltage,
};
static rt_err_t regulator_fixed_probe(struct rt_platform_device *pdev)
{
rt_err_t err;
rt_uint32_t val;
struct rt_device *dev = &pdev->parent;
struct regulator_fixed *rf = rt_calloc(1, sizeof(*rf));
struct rt_regulator_node *rnp;
if (!rf)
{
return -RT_ENOMEM;
}
regulator_ofw_parse(dev->ofw_node, &rf->param);
rnp = &rf->parent;
rnp->supply_name = rf->param.name;
rnp->ops = ®ulator_fixed_ops;
rnp->param = &rf->param;
rnp->dev = &pdev->parent;
rf->enable_pin = rt_pin_get_named_pin(dev, "enable", 0, RT_NULL, RT_NULL);
if (rf->enable_pin < 0)
{
rf->enable_pin = rt_pin_get_named_pin(dev, RT_NULL, 0, RT_NULL, RT_NULL);
}
if (rf->enable_pin < 0)
{
rf->enable_pin = -1;
}
rt_pin_ctrl_confs_apply(dev, 0);
if (!rt_dm_dev_prop_read_u32(dev, "startup-delay-us", &val))
{
rf->param.enable_delay = val;
}
if (!rt_dm_dev_prop_read_u32(dev, "off-on-delay-us", &val))
{
rf->param.off_on_delay = val;
}
if ((err = rt_regulator_register(rnp)))
{
goto _fail;
}
return RT_EOK;
_fail:
rt_free(rf);
return err;
}
static const struct rt_ofw_node_id regulator_fixed_ofw_ids[] =
{
{ .compatible = "regulator-fixed" },
{ /* sentinel */ }
};
static struct rt_platform_driver regulator_fixed_driver =
{
.name = "reg-fixed-voltage",
.ids = regulator_fixed_ofw_ids,
.probe = regulator_fixed_probe,
};
static int regulator_fixed_register(void)
{
rt_platform_driver_register(®ulator_fixed_driver);
return 0;
}
INIT_SUBSYS_EXPORT(regulator_fixed_register);
|
