drivers/gpu/drm/nouveau/core/subdev/therm/ic.c

   1 /*
   2  * Copyright 2012 Nouveau community
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Martin Peres
  23  */
  24
  25 #include "priv.h"
  26
  27 #include <subdev/i2c.h>
  28 #include <subdev/bios/extdev.h>
  29
  30 static bool
  31 probe_monitoring_device(struct nouveau_i2c_port *i2c,
  32                         struct i2c_board_info *info)
  33 {
  34         struct nouveau_therm_priv *priv = (void *)nouveau_therm(i2c);
  35         struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
  36         struct i2c_client *client;
  37
  38         request_module("%s%s", I2C_MODULE_PREFIX, info->type);
  39
  40         client = i2c_new_device(&i2c->adapter, info);
  41         if (!client)
  42                 return false;
  43
  44         if (!client->dev.driver ||
  45             to_i2c_driver(client->dev.driver)->detect(client, info)) {
  46                 i2c_unregister_device(client);
  47                 return false;
  48         }
  49
  50         nv_info(priv,
  51                 "Found an %s at address 0x%x (controlled by lm_sensors, "
  52                 "temp offset %+i C)\n",
  53                 info->type, info->addr, sensor->offset_constant);
  54         priv->ic = client;
  55
  56         return true;
  57 }
  58
  59 static struct i2c_board_info
  60 nv_board_infos[] = {
  61         { I2C_BOARD_INFO("w83l785ts", 0x2d) },
  62         { I2C_BOARD_INFO("w83781d", 0x2d) },
  63         { I2C_BOARD_INFO("adt7473", 0x2e) },
  64         { I2C_BOARD_INFO("adt7473", 0x2d) },
  65         { I2C_BOARD_INFO("adt7473", 0x2c) },
  66         { I2C_BOARD_INFO("f75375", 0x2e) },
  67         { I2C_BOARD_INFO("lm99", 0x4c) },
  68         { I2C_BOARD_INFO("lm90", 0x4c) },
  69         { I2C_BOARD_INFO("lm90", 0x4d) },
  70         { I2C_BOARD_INFO("adm1021", 0x18) },
  71         { I2C_BOARD_INFO("adm1021", 0x19) },
  72         { I2C_BOARD_INFO("adm1021", 0x1a) },
  73         { I2C_BOARD_INFO("adm1021", 0x29) },
  74         { I2C_BOARD_INFO("adm1021", 0x2a) },
  75         { I2C_BOARD_INFO("adm1021", 0x2b) },
  76         { I2C_BOARD_INFO("adm1021", 0x4c) },
  77         { I2C_BOARD_INFO("adm1021", 0x4d) },
  78         { I2C_BOARD_INFO("adm1021", 0x4e) },
  79         { I2C_BOARD_INFO("lm63", 0x18) },
  80         { I2C_BOARD_INFO("lm63", 0x4e) },
  81         { }
  82 };
  83
  84 void
  85 nouveau_therm_ic_ctor(struct nouveau_therm *therm)
  86 {
  87         struct nouveau_therm_priv *priv = (void *)therm;
  88         struct nouveau_bios *bios = nouveau_bios(therm);
  89         struct nouveau_i2c *i2c = nouveau_i2c(therm);
  90         struct nvbios_extdev_func extdev_entry;
  91
  92         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
  93                 struct i2c_board_info board[] = {
  94                         { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) },
  95                         { }
  96                 };
  97
  98                 i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
  99                                   board, probe_monitoring_device);
 100                 if (priv->ic)
 101                         return;
 102         }
 103
 104         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
 105                 struct i2c_board_info board[] = {
 106                         { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) },
 107                         { }
 108                 };
 109
 110                 i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 111                                   board, probe_monitoring_device);
 112                 if (priv->ic)
 113                         return;
 114         }
 115
 116         /* The vbios doesn't provide the address of an exisiting monitoring
 117            device. Let's try our static list.
 118          */
 119         i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 120                       nv_board_infos, probe_monitoring_device);
 121 }