1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for MPS MP5023 Hot-Swap Controller
4 */
5
6 #include <linux/i2c.h>
7 #include <linux/module.h>
8 #include <linux/of.h>
9 #include "pmbus.h"
10
11 static struct pmbus_driver_info mp5023_info = {
12 .pages = 1,
13
14 .format[PSC_VOLTAGE_IN] = direct,
15 .format[PSC_VOLTAGE_OUT] = direct,
16 .format[PSC_CURRENT_OUT] = direct,
17 .format[PSC_POWER] = direct,
18 .format[PSC_TEMPERATURE] = direct,
19
20 .m[PSC_VOLTAGE_IN] = 32,
21 .b[PSC_VOLTAGE_IN] = 0,
22 .R[PSC_VOLTAGE_IN] = 0,
23 .m[PSC_VOLTAGE_OUT] = 32,
24 .b[PSC_VOLTAGE_OUT] = 0,
25 .R[PSC_VOLTAGE_OUT] = 0,
26 .m[PSC_CURRENT_OUT] = 16,
27 .b[PSC_CURRENT_OUT] = 0,
28 .R[PSC_CURRENT_OUT] = 0,
29 .m[PSC_POWER] = 1,
30 .b[PSC_POWER] = 0,
31 .R[PSC_POWER] = 0,
32 .m[PSC_TEMPERATURE] = 2,
33 .b[PSC_TEMPERATURE] = 0,
34 .R[PSC_TEMPERATURE] = 0,
35
36 .func[0] =
37 PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN |
38 PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT |
39 PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
40 };
41
mp5023_probe(struct i2c_client * client)42 static int mp5023_probe(struct i2c_client *client)
43 {
44 return pmbus_do_probe(client, &mp5023_info);
45 }
46
47 static const struct of_device_id __maybe_unused mp5023_of_match[] = {
48 { .compatible = "mps,mp5023", },
49 {}
50 };
51
52 MODULE_DEVICE_TABLE(of, mp5023_of_match);
53
54 static struct i2c_driver mp5023_driver = {
55 .driver = {
56 .name = "mp5023",
57 .of_match_table = of_match_ptr(mp5023_of_match),
58 },
59 .probe = mp5023_probe,
60 };
61
62 module_i2c_driver(mp5023_driver);
63
64 MODULE_AUTHOR("Howard Chiu <howard.chiu@quantatw.com>");
65 MODULE_DESCRIPTION("PMBus driver for MPS MP5023 HSC");
66 MODULE_LICENSE("GPL");
67 MODULE_IMPORT_NS(PMBUS);
68