xref: /openbmc/linux/drivers/hwmon/pmbus/mp5023.c (revision 39f03438)
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