drivers/hwmon/pmbus/mp5023.c

   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_device.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
  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_new = 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);