This source file includes following definitions.
- max16064_read_word_data
- max16064_write_word_data
- max16064_probe
1
2
3
4
5
6
7
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/err.h>
12 #include <linux/i2c.h>
13 #include "pmbus.h"
14
15 #define MAX16064_MFR_VOUT_PEAK 0xd4
16 #define MAX16064_MFR_TEMPERATURE_PEAK 0xd6
17
18 static int max16064_read_word_data(struct i2c_client *client, int page, int reg)
19 {
20 int ret;
21
22 switch (reg) {
23 case PMBUS_VIRT_READ_VOUT_MAX:
24 ret = pmbus_read_word_data(client, page,
25 MAX16064_MFR_VOUT_PEAK);
26 break;
27 case PMBUS_VIRT_READ_TEMP_MAX:
28 ret = pmbus_read_word_data(client, page,
29 MAX16064_MFR_TEMPERATURE_PEAK);
30 break;
31 case PMBUS_VIRT_RESET_VOUT_HISTORY:
32 case PMBUS_VIRT_RESET_TEMP_HISTORY:
33 ret = 0;
34 break;
35 default:
36 ret = -ENODATA;
37 break;
38 }
39 return ret;
40 }
41
42 static int max16064_write_word_data(struct i2c_client *client, int page,
43 int reg, u16 word)
44 {
45 int ret;
46
47 switch (reg) {
48 case PMBUS_VIRT_RESET_VOUT_HISTORY:
49 ret = pmbus_write_word_data(client, page,
50 MAX16064_MFR_VOUT_PEAK, 0);
51 break;
52 case PMBUS_VIRT_RESET_TEMP_HISTORY:
53 ret = pmbus_write_word_data(client, page,
54 MAX16064_MFR_TEMPERATURE_PEAK,
55 0xffff);
56 break;
57 default:
58 ret = -ENODATA;
59 break;
60 }
61 return ret;
62 }
63
64 static struct pmbus_driver_info max16064_info = {
65 .pages = 4,
66 .format[PSC_VOLTAGE_IN] = direct,
67 .format[PSC_VOLTAGE_OUT] = direct,
68 .format[PSC_TEMPERATURE] = direct,
69 .m[PSC_VOLTAGE_IN] = 19995,
70 .b[PSC_VOLTAGE_IN] = 0,
71 .R[PSC_VOLTAGE_IN] = -1,
72 .m[PSC_VOLTAGE_OUT] = 19995,
73 .b[PSC_VOLTAGE_OUT] = 0,
74 .R[PSC_VOLTAGE_OUT] = -1,
75 .m[PSC_TEMPERATURE] = -7612,
76 .b[PSC_TEMPERATURE] = 335,
77 .R[PSC_TEMPERATURE] = -3,
78 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
79 | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
80 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
81 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
82 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
83 .read_word_data = max16064_read_word_data,
84 .write_word_data = max16064_write_word_data,
85 };
86
87 static int max16064_probe(struct i2c_client *client,
88 const struct i2c_device_id *id)
89 {
90 return pmbus_do_probe(client, id, &max16064_info);
91 }
92
93 static const struct i2c_device_id max16064_id[] = {
94 {"max16064", 0},
95 {}
96 };
97
98 MODULE_DEVICE_TABLE(i2c, max16064_id);
99
100
101 static struct i2c_driver max16064_driver = {
102 .driver = {
103 .name = "max16064",
104 },
105 .probe = max16064_probe,
106 .remove = pmbus_do_remove,
107 .id_table = max16064_id,
108 };
109
110 module_i2c_driver(max16064_driver);
111
112 MODULE_AUTHOR("Guenter Roeck");
113 MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
114 MODULE_LICENSE("GPL");