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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Hardware monitoring driver for Maxim MAX16064
4 *
5 * Copyright (c) 2011 Ericsson AB.
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
18static int max16064_read_word_data(struct i2c_client *client, int page,
19 int phase, int reg)
20{
21 int ret;
22
23 switch (reg) {
24 case PMBUS_VIRT_READ_VOUT_MAX:
25 ret = pmbus_read_word_data(client, page, phase,
26 MAX16064_MFR_VOUT_PEAK);
27 break;
28 case PMBUS_VIRT_READ_TEMP_MAX:
29 ret = pmbus_read_word_data(client, page, phase,
30 MAX16064_MFR_TEMPERATURE_PEAK);
31 break;
32 case PMBUS_VIRT_RESET_VOUT_HISTORY:
33 case PMBUS_VIRT_RESET_TEMP_HISTORY:
34 ret = 0;
35 break;
36 default:
37 ret = -ENODATA;
38 break;
39 }
40 return ret;
41}
42
43static int max16064_write_word_data(struct i2c_client *client, int page,
44 int reg, u16 word)
45{
46 int ret;
47
48 switch (reg) {
49 case PMBUS_VIRT_RESET_VOUT_HISTORY:
50 ret = pmbus_write_word_data(client, page,
51 MAX16064_MFR_VOUT_PEAK, 0);
52 break;
53 case PMBUS_VIRT_RESET_TEMP_HISTORY:
54 ret = pmbus_write_word_data(client, page,
55 MAX16064_MFR_TEMPERATURE_PEAK,
56 0xffff);
57 break;
58 default:
59 ret = -ENODATA;
60 break;
61 }
62 return ret;
63}
64
65static struct pmbus_driver_info max16064_info = {
66 .pages = 4,
67 .format[PSC_VOLTAGE_IN] = direct,
68 .format[PSC_VOLTAGE_OUT] = direct,
69 .format[PSC_TEMPERATURE] = direct,
70 .m[PSC_VOLTAGE_IN] = 19995,
71 .b[PSC_VOLTAGE_IN] = 0,
72 .R[PSC_VOLTAGE_IN] = -1,
73 .m[PSC_VOLTAGE_OUT] = 19995,
74 .b[PSC_VOLTAGE_OUT] = 0,
75 .R[PSC_VOLTAGE_OUT] = -1,
76 .m[PSC_TEMPERATURE] = -7612,
77 .b[PSC_TEMPERATURE] = 335,
78 .R[PSC_TEMPERATURE] = -3,
79 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
80 | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
81 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
82 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
83 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
84 .read_word_data = max16064_read_word_data,
85 .write_word_data = max16064_write_word_data,
86};
87
88static int max16064_probe(struct i2c_client *client,
89 const struct i2c_device_id *id)
90{
91 return pmbus_do_probe(client, id, &max16064_info);
92}
93
94static const struct i2c_device_id max16064_id[] = {
95 {"max16064", 0},
96 {}
97};
98
99MODULE_DEVICE_TABLE(i2c, max16064_id);
100
101/* This is the driver that will be inserted */
102static struct i2c_driver max16064_driver = {
103 .driver = {
104 .name = "max16064",
105 },
106 .probe = max16064_probe,
107 .remove = pmbus_do_remove,
108 .id_table = max16064_id,
109};
110
111module_i2c_driver(max16064_driver);
112
113MODULE_AUTHOR("Guenter Roeck");
114MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
115MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Hardware monitoring driver for Maxim MAX16064
4 *
5 * Copyright (c) 2011 Ericsson AB.
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
18static int max16064_read_word_data(struct i2c_client *client, int page,
19 int phase, int reg)
20{
21 int ret;
22
23 switch (reg) {
24 case PMBUS_VIRT_READ_VOUT_MAX:
25 ret = pmbus_read_word_data(client, page, phase,
26 MAX16064_MFR_VOUT_PEAK);
27 break;
28 case PMBUS_VIRT_READ_TEMP_MAX:
29 ret = pmbus_read_word_data(client, page, phase,
30 MAX16064_MFR_TEMPERATURE_PEAK);
31 break;
32 case PMBUS_VIRT_RESET_VOUT_HISTORY:
33 case PMBUS_VIRT_RESET_TEMP_HISTORY:
34 ret = 0;
35 break;
36 default:
37 ret = -ENODATA;
38 break;
39 }
40 return ret;
41}
42
43static int max16064_write_word_data(struct i2c_client *client, int page,
44 int reg, u16 word)
45{
46 int ret;
47
48 switch (reg) {
49 case PMBUS_VIRT_RESET_VOUT_HISTORY:
50 ret = pmbus_write_word_data(client, page,
51 MAX16064_MFR_VOUT_PEAK, 0);
52 break;
53 case PMBUS_VIRT_RESET_TEMP_HISTORY:
54 ret = pmbus_write_word_data(client, page,
55 MAX16064_MFR_TEMPERATURE_PEAK,
56 0xffff);
57 break;
58 default:
59 ret = -ENODATA;
60 break;
61 }
62 return ret;
63}
64
65static struct pmbus_driver_info max16064_info = {
66 .pages = 4,
67 .format[PSC_VOLTAGE_IN] = direct,
68 .format[PSC_VOLTAGE_OUT] = direct,
69 .format[PSC_TEMPERATURE] = direct,
70 .m[PSC_VOLTAGE_IN] = 19995,
71 .b[PSC_VOLTAGE_IN] = 0,
72 .R[PSC_VOLTAGE_IN] = -1,
73 .m[PSC_VOLTAGE_OUT] = 19995,
74 .b[PSC_VOLTAGE_OUT] = 0,
75 .R[PSC_VOLTAGE_OUT] = -1,
76 .m[PSC_TEMPERATURE] = -7612,
77 .b[PSC_TEMPERATURE] = 335,
78 .R[PSC_TEMPERATURE] = -3,
79 .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
80 | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
81 .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
82 .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
83 .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
84 .read_word_data = max16064_read_word_data,
85 .write_word_data = max16064_write_word_data,
86};
87
88static int max16064_probe(struct i2c_client *client)
89{
90 return pmbus_do_probe(client, &max16064_info);
91}
92
93static const struct i2c_device_id max16064_id[] = {
94 {"max16064", 0},
95 {}
96};
97
98MODULE_DEVICE_TABLE(i2c, max16064_id);
99
100/* This is the driver that will be inserted */
101static struct i2c_driver max16064_driver = {
102 .driver = {
103 .name = "max16064",
104 },
105 .probe_new = max16064_probe,
106 .id_table = max16064_id,
107};
108
109module_i2c_driver(max16064_driver);
110
111MODULE_AUTHOR("Guenter Roeck");
112MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
113MODULE_LICENSE("GPL");
114MODULE_IMPORT_NS(PMBUS);