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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/*
* Copyright (C) 2012 Samsung Electronics
* Rajeshwari Shinde <rajeshwari.s@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdtdec.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/max77686_pmic.h>
#include <errno.h>
DECLARE_GLOBAL_DATA_PTR;
static const char max77686_buck_addr[] = {
0xff, 0x10, 0x12, 0x1c, 0x26, 0x30, 0x32, 0x34, 0x36, 0x38
};
static unsigned int max77686_ldo_volt2hex(int ldo, ulong uV)
{
unsigned int hex = 0;
switch (ldo) {
case 1:
case 2:
case 6:
case 7:
case 8:
case 15:
hex = (uV - 800000) / 25000;
break;
default:
hex = (uV - 800000) / 50000;
}
if (hex >= 0 && hex <= MAX77686_LDO_VOLT_MAX_HEX)
return hex;
debug("%s: %ld is wrong voltage value for LDO%d\n", __func__, uV, ldo);
return 0;
}
int max77686_set_ldo_voltage(struct pmic *p, int ldo, ulong uV)
{
unsigned int val, ret, hex, adr;
if (ldo < 1 && ldo > 26) {
printf("%s: %d is wrong ldo number\n", __func__, ldo);
return -1;
}
adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
hex = max77686_ldo_volt2hex(ldo, uV);
if (!hex)
return -1;
ret = pmic_reg_read(p, adr, &val);
if (ret)
return ret;
val &= ~MAX77686_LDO_VOLT_MASK;
val |= hex;
ret |= pmic_reg_write(p, adr, val);
return ret;
}
int max77686_set_ldo_mode(struct pmic *p, int ldo, char opmode)
{
unsigned int val, ret, adr, mode;
if (ldo < 1 && 26 < ldo) {
printf("%s: %d is wrong ldo number\n", __func__, ldo);
return -1;
}
adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
/* mode */
switch (opmode) {
case OPMODE_OFF:
mode = MAX77686_LDO_MODE_OFF;
break;
case OPMODE_STANDBY:
switch (ldo) {
case 2:
case 6:
case 7:
case 8:
case 10:
case 11:
case 12:
case 14:
case 15:
case 16:
mode = MAX77686_LDO_MODE_STANDBY;
break;
default:
mode = 0xff;
}
break;
case OPMODE_LPM:
mode = MAX77686_LDO_MODE_LPM;
break;
case OPMODE_ON:
mode = MAX77686_LDO_MODE_ON;
break;
default:
mode = 0xff;
}
if (mode == 0xff) {
printf("%s: %d is not supported on LDO%d\n",
__func__, opmode, ldo);
return -1;
}
ret = pmic_reg_read(p, adr, &val);
if (ret)
return ret;
val &= ~MAX77686_LDO_MODE_MASK;
val |= mode;
ret |= pmic_reg_write(p, adr, val);
return ret;
}
int max77686_set_buck_mode(struct pmic *p, int buck, char opmode)
{
unsigned int val, ret, mask, adr, size, mode, mode_shift;
size = ARRAY_SIZE(max77686_buck_addr);
if (buck >= size) {
printf("%s: %d is wrong buck number\n", __func__, buck);
return -1;
}
adr = max77686_buck_addr[buck];
/* mask */
switch (buck) {
case 2:
case 3:
case 4:
mode_shift = MAX77686_BUCK_MODE_SHIFT_2;
break;
default:
mode_shift = MAX77686_BUCK_MODE_SHIFT_1;
}
mask = MAX77686_BUCK_MODE_MASK << mode_shift;
/* mode */
switch (opmode) {
case OPMODE_OFF:
mode = MAX77686_BUCK_MODE_OFF;
break;
case OPMODE_STANDBY:
switch (buck) {
case 1:
case 2:
case 3:
case 4:
mode = MAX77686_BUCK_MODE_STANDBY << mode_shift;
break;
default:
mode = 0xff;
}
break;
case OPMODE_LPM:
switch (buck) {
case 2:
case 3:
case 4:
mode = MAX77686_BUCK_MODE_LPM << mode_shift;
break;
default:
mode = 0xff;
}
break;
case OPMODE_ON:
mode = MAX77686_BUCK_MODE_ON << mode_shift;
break;
default:
mode = 0xff;
}
if (mode == 0xff) {
printf("%s: %d is not supported on BUCK%d\n",
__func__, opmode, buck);
return -1;
}
ret = pmic_reg_read(p, adr, &val);
if (ret)
return ret;
val &= ~mask;
val |= mode;
ret |= pmic_reg_write(p, adr, val);
return ret;
}
int pmic_init(unsigned char bus)
{
static const char name[] = "MAX77686_PMIC";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
#ifdef CONFIG_OF_CONTROL
const void *blob = gd->fdt_blob;
int node, parent;
node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
if (node < 0) {
debug("PMIC: No node for PMIC Chip in device tree\n");
debug("node = %d\n", node);
return -1;
}
parent = fdt_parent_offset(blob, node);
if (parent < 0) {
debug("%s: Cannot find node parent\n", __func__);
return -1;
}
p->bus = i2c_get_bus_num_fdt(parent);
if (p->bus < 0) {
debug("%s: Cannot find I2C bus\n", __func__);
return -1;
}
p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
#else
p->bus = bus;
p->hw.i2c.addr = MAX77686_I2C_ADDR;
#endif
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = PMIC_NUM_OF_REGS;
p->hw.i2c.tx_num = 1;
puts("Board PMIC init\n");
return 0;
}
|
