drivers/hwmon/max16064.c

   1 /*
   2  * Hardware monitoring driver for Maxim MAX16064
   3  *
   4  * Copyright (c) 2011 Ericsson AB.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <linux/kernel.h>
  22 #include <linux/module.h>
  23 #include <linux/init.h>
  24 #include <linux/err.h>
  25 #include <linux/i2c.h>
  26 #include "pmbus.h"
  27
  28 static struct pmbus_driver_info max16064_info = {
  29         .pages = 4,
  30         .direct[PSC_VOLTAGE_IN] = true,
  31         .direct[PSC_VOLTAGE_OUT] = true,
  32         .direct[PSC_TEMPERATURE] = true,
  33         .m[PSC_VOLTAGE_IN] = 19995,
  34         .b[PSC_VOLTAGE_IN] = 0,
  35         .R[PSC_VOLTAGE_IN] = -1,
  36         .m[PSC_VOLTAGE_OUT] = 19995,
  37         .b[PSC_VOLTAGE_OUT] = 0,
  38         .R[PSC_VOLTAGE_OUT] = -1,
  39         .m[PSC_TEMPERATURE] = -7612,
  40         .b[PSC_TEMPERATURE] = 335,
  41         .R[PSC_TEMPERATURE] = -3,
  42         .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
  43                 | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
  44         .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
  45         .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
  46         .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
  47 };
  48
  49 static int max16064_probe(struct i2c_client *client,
  50                           const struct i2c_device_id *id)
  51 {
  52         return pmbus_do_probe(client, id, &max16064_info);
  53 }
  54
  55 static int max16064_remove(struct i2c_client *client)
  56 {
  57         return pmbus_do_remove(client);
  58 }
  59
  60 static const struct i2c_device_id max16064_id[] = {
  61         {"max16064", 0},
  62         {}
  63 };
  64
  65 MODULE_DEVICE_TABLE(i2c, max16064_id);
  66
  67 /* This is the driver that will be inserted */
  68 static struct i2c_driver max16064_driver = {
  69         .driver = {
  70                    .name = "max16064",
  71                    },
  72         .probe = max16064_probe,
  73         .remove = max16064_remove,
  74         .id_table = max16064_id,
  75 };
  76
  77 static int __init max16064_init(void)
  78 {
  79         return i2c_add_driver(&max16064_driver);
  80 }
  81
  82 static void __exit max16064_exit(void)
  83 {
  84         i2c_del_driver(&max16064_driver);
  85 }
  86
  87 MODULE_AUTHOR("Guenter Roeck");
  88 MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
  89 MODULE_LICENSE("GPL");
  90 module_init(max16064_init);
  91 module_exit(max16064_exit);