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
|
/*
* Copyright 2013 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/* Power-One ZM7300 DPM */
#include "zm7300.h"
#define DPM_WP 0x96
#define WRP_OPCODE 0x01
#define WRM_OPCODE 0x02
#define RRP_OPCODE 0x11
#define DPM_SUCCESS 0x01
#define DPM_EXEC_FAIL 0x00
static const uint16_t hex_to_1_10mv[] = {
5000,
5125,
5250,
5375,
5500,
5625,
5750,
5875,
6000,
6125,
6250,
6375,
6500,
6625,
6750,
6875,
7000,
7125,
7250,
7375,
7500,
7625,
7750,
7875,
8000,
8125,
8250,
8375,
8500,
8625,
8750,
8875,
9000,
9125,
9250,
9375,
9500, /* 0.95mV */
9625,
9750,
9875,
10000, /* 1.0V */
10125,
10250,
10375,
10500,
10625,
10750,
10875,
11000,
11125,
11250,
11375,
11500,
11625,
11750,
11875,
12000,
12125,
12250,
12375,
0, /* reserved */
};
/* Read Data d from Register r of POL p */
u8 dpm_rrp(uchar r)
{
u8 ret[5];
ret[0] = RRP_OPCODE;
/* POL is 0 */
ret[1] = 0;
ret[2] = r;
i2c_read(I2C_DPM_ADDR, 0, -3, ret, 2);
if (ret[1] == DPM_SUCCESS) { /* the DPM returned success as status */
debug("RRP_OPCODE returned success data is %x\n", ret[0]);
return ret[0];
} else {
return -1;
}
}
/* Write Data d into DPM register r (RAM) */
int dpm_wrm(u8 r, u8 d)
{
u8 ret[5];
ret[0] = WRM_OPCODE;
ret[1] = r;
ret[2] = d;
i2c_read(I2C_DPM_ADDR, 0, -3, ret, 1);
if (ret[0] == DPM_SUCCESS) { /* the DPM returned success as status */
debug("WRM_OPCODE returned success data is %x\n", ret[0]);
return ret[0];
} else {
return -1;
}
}
/* Write Data d into Register r of POL(s) a */
int dpm_wrp(u8 r, u8 d)
{
u8 ret[7];
ret[0] = WRP_OPCODE;
/* only POL0 is present */
ret[1] = 0x01;
ret[2] = 0x00;
ret[3] = 0x00;
ret[4] = 0x00;
ret[5] = r;
ret[6] = d;
i2c_read(I2C_DPM_ADDR, 0, -7, ret, 1);
if (ret[0] == DPM_SUCCESS) { /* the DPM returned success as status */
debug("WRP_OPCODE returned success data is %x\n", ret[0]);
return 0;
} else {
return -1;
}
}
/* Uses the DPM command RRP */
u8 zm_read(uchar reg)
{
return dpm_rrp(reg);
}
/* ZM_write --
Steps:
a. Write data to the register
b. Read data from register and compare to written value
c. Return return_code & voltage_read
*/
u8 zm_write(u8 reg, u8 data)
{
u8 d;
/* write data to register */
dpm_wrp(reg, data);
/* read register and compare to written value */
d = dpm_rrp(reg);
if (d != data) {
printf("zm_write : Comparison register data failed\n");
return -1;
}
return d;
}
/* zm_write_out_voltage
* voltage in 1/10 mV
*/
int zm_write_voltage(int voltage)
{
u8 reg = 0x7, vid;
uint16_t voltage_read;
u8 ret;
vid = (voltage - 5000) / ZM_STEP;
ret = zm_write(reg, vid);
if (ret != -1) {
voltage_read = hex_to_1_10mv[ret];
debug("voltage set to %dmV\n", voltage_read/10);
return voltage_read;
}
return -1;
}
/* zm_read_out_voltage
* voltage in 1/10 mV
*/
int zm_read_voltage(void)
{
u8 reg = 0x7;
u8 ret;
int voltage;
ret = zm_read(reg);
if (ret != -1) {
voltage = hex_to_1_10mv[ret];
debug("Voltage read is %dmV\n", voltage/10);
return voltage;
} else {
return -1;
}
}
int zm_disable_wp()
{
u8 new_wp_value;
/* Disable using Write-Protect register 0x96 */
new_wp_value = 0x8;
if ((dpm_wrm(DPM_WP, new_wp_value)) < 0) {
printf("Disable Write-Protect register failed\n");
return -1;
}
return 0;
}
int zm_enable_wp()
{
u8 orig_wp_value;
orig_wp_value = 0x0;
/* Enable using Write-Protect register 0x96 */
if ((dpm_wrm(DPM_WP, orig_wp_value)) < 0) {
printf("Enable Write-Protect register failed\n");
return -1;
}
return 0;
}
|
