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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2017
* Texas Instruments Incorporated, <www.ti.com>
*
* Keerthy <j-keerthy@ti.com>
*/
#include <common.h>
#include <fdtdec.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/lp87565.h>
static const char lp87565_buck_ctrl1[LP87565_BUCK_NUM] = {0x2, 0x4, 0x6, 0x8, 0x2, 0x6};
static const char lp87565_buck_vout[LP87565_BUCK_NUM] = {0xA, 0xC, 0xE, 0x10, 0xA, 0xE };
static int lp87565_buck_enable(struct udevice *dev, int op, bool *enable)
{
int ret;
unsigned int adr;
struct dm_regulator_uclass_platdata *uc_pdata;
uc_pdata = dev_get_uclass_platdata(dev);
adr = uc_pdata->ctrl_reg;
ret = pmic_reg_read(dev->parent, adr);
if (ret < 0)
return ret;
if (op == PMIC_OP_GET) {
ret &= LP87565_BUCK_MODE_MASK;
if (ret)
*enable = true;
else
*enable = false;
return 0;
} else if (op == PMIC_OP_SET) {
if (*enable)
ret |= LP87565_BUCK_MODE_MASK;
else
ret &= ~LP87565_BUCK_MODE_MASK;
ret = pmic_reg_write(dev->parent, adr, ret);
if (ret)
return ret;
}
return 0;
}
static int lp87565_buck_volt2val(int uV)
{
if (uV > LP87565_BUCK_VOLT_MAX)
return -EINVAL;
else if (uV > 1400000)
return (uV - 1420000) / 20000 + 0x9E;
else if (uV > 730000)
return (uV - 735000) / 5000 + 0x18;
else if (uV >= 500000)
return (uV - 500000) / 10000;
else
return -EINVAL;
}
static int lp87565_buck_val2volt(int val)
{
if (val > LP87565_BUCK_VOLT_MAX_HEX)
return -EINVAL;
else if (val > 0x9D)
return 1400000 + (val - 0x9D) * 20000;
else if (val > 0x17)
return 730000 + (val - 0x17) * 5000;
else if (val >= 0x0)
return 500000 + val * 10000;
else
return -EINVAL;
}
static int lp87565_buck_val(struct udevice *dev, int op, int *uV)
{
unsigned int hex, adr;
int ret;
struct dm_regulator_uclass_platdata *uc_pdata;
uc_pdata = dev_get_uclass_platdata(dev);
if (op == PMIC_OP_GET)
*uV = 0;
adr = uc_pdata->volt_reg;
ret = pmic_reg_read(dev->parent, adr);
if (ret < 0)
return ret;
if (op == PMIC_OP_GET) {
ret &= LP87565_BUCK_VOLT_MASK;
ret = lp87565_buck_val2volt(ret);
if (ret < 0)
return ret;
*uV = ret;
return 0;
}
hex = lp87565_buck_volt2val(*uV);
if (hex < 0)
return hex;
ret &= 0x0;
ret = hex;
ret = pmic_reg_write(dev->parent, adr, ret);
return ret;
}
static int lp87565_buck_probe(struct udevice *dev)
{
struct dm_regulator_uclass_platdata *uc_pdata;
int idx;
uc_pdata = dev_get_uclass_platdata(dev);
uc_pdata->type = REGULATOR_TYPE_BUCK;
idx = dev->driver_data;
if (idx == 0 || idx == 1 || idx == 2 || idx == 3) {
debug("Single phase regulator\n");
} else if (idx == 23) {
idx = 5;
} else if (idx == 10) {
idx = 4;
} else {
printf("Wrong ID for regulator\n");
return -EINVAL;
}
uc_pdata->ctrl_reg = lp87565_buck_ctrl1[idx];
uc_pdata->volt_reg = lp87565_buck_vout[idx];
return 0;
}
static int buck_get_value(struct udevice *dev)
{
int uV;
int ret;
ret = lp87565_buck_val(dev, PMIC_OP_GET, &uV);
if (ret)
return ret;
return uV;
}
static int buck_set_value(struct udevice *dev, int uV)
{
return lp87565_buck_val(dev, PMIC_OP_SET, &uV);
}
static int buck_get_enable(struct udevice *dev)
{
bool enable = false;
int ret;
ret = lp87565_buck_enable(dev, PMIC_OP_GET, &enable);
if (ret)
return ret;
return enable;
}
static int buck_set_enable(struct udevice *dev, bool enable)
{
return lp87565_buck_enable(dev, PMIC_OP_SET, &enable);
}
static const struct dm_regulator_ops lp87565_buck_ops = {
.get_value = buck_get_value,
.set_value = buck_set_value,
.get_enable = buck_get_enable,
.set_enable = buck_set_enable,
};
U_BOOT_DRIVER(lp87565_buck) = {
.name = LP87565_BUCK_DRIVER,
.id = UCLASS_REGULATOR,
.ops = &lp87565_buck_ops,
.probe = lp87565_buck_probe,
};
|
