kernel/drivers/gpu/drm/nouveau/nvkm/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 #include "priv.h"
  25
  26 #include <subdev/bios/extdev.h>
  27 #include <subdev/i2c.h>
  28
  29 static bool
  30 probe_monitoring_device(struct nvkm_i2c_port *i2c,
  31                         struct i2c_board_info *info, void *data)
  32 {
  33         struct nvkm_therm_priv *priv = data;
  34         struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
  35         struct i2c_client *client;
  36
  37         request_module("%s%s", I2C_MODULE_PREFIX, info->type);
  38
  39         client = i2c_new_device(&i2c->adapter, info);
  40         if (!client)
  41                 return false;
  42
  43         if (!client->dev.driver ||
  44             to_i2c_driver(client->dev.driver)->detect(client, info)) {
  45                 i2c_unregister_device(client);
  46                 return false;
  47         }
  48
  49         nv_info(priv,
  50                 "Found an %s at address 0x%x (controlled by lm_sensors, "
  51                 "temp offset %+i C)\n",
  52                 info->type, info->addr, sensor->offset_constant);
  53         priv->ic = client;
  54         return true;
  55 }
  56
  57 static struct nvkm_i2c_board_info
  58 nv_board_infos[] = {
  59         { { I2C_BOARD_INFO("w83l785ts", 0x2d) }, 0 },
  60         { { I2C_BOARD_INFO("w83781d", 0x2d) }, 0  },
  61         { { I2C_BOARD_INFO("adt7473", 0x2e) }, 40  },
  62         { { I2C_BOARD_INFO("adt7473", 0x2d) }, 40  },
  63         { { I2C_BOARD_INFO("adt7473", 0x2c) }, 40  },
  64         { { I2C_BOARD_INFO("f75375", 0x2e) }, 0  },
  65         { { I2C_BOARD_INFO("lm99", 0x4c) }, 0  },
  66         { { I2C_BOARD_INFO("lm90", 0x4c) }, 0  },
  67         { { I2C_BOARD_INFO("lm90", 0x4d) }, 0  },
  68         { { I2C_BOARD_INFO("adm1021", 0x18) }, 0  },
  69         { { I2C_BOARD_INFO("adm1021", 0x19) }, 0  },
  70         { { I2C_BOARD_INFO("adm1021", 0x1a) }, 0  },
  71         { { I2C_BOARD_INFO("adm1021", 0x29) }, 0  },
  72         { { I2C_BOARD_INFO("adm1021", 0x2a) }, 0  },
  73         { { I2C_BOARD_INFO("adm1021", 0x2b) }, 0  },
  74         { { I2C_BOARD_INFO("adm1021", 0x4c) }, 0  },
  75         { { I2C_BOARD_INFO("adm1021", 0x4d) }, 0  },
  76         { { I2C_BOARD_INFO("adm1021", 0x4e) }, 0  },
  77         { { I2C_BOARD_INFO("lm63", 0x18) }, 0  },
  78         { { I2C_BOARD_INFO("lm63", 0x4e) }, 0  },
  79         { }
  80 };
  81
  82 void
  83 nvkm_therm_ic_ctor(struct nvkm_therm *therm)
  84 {
  85         struct nvkm_therm_priv *priv = (void *)therm;
  86         struct nvkm_bios *bios = nvkm_bios(therm);
  87         struct nvkm_i2c *i2c = nvkm_i2c(therm);
  88         struct nvbios_extdev_func extdev_entry;
  89
  90         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
  91                 struct nvkm_i2c_board_info board[] = {
  92                   { { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) }, 0},
  93                   { }
  94                 };
  95
  96                 i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
  97                               board, probe_monitoring_device, therm);
  98                 if (priv->ic)
  99                         return;
 100         }
 101
 102         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
 103                 struct nvkm_i2c_board_info board[] = {
 104                   { { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) }, 20 },
 105                   { }
 106                 };
 107
 108                 i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 109                               board, probe_monitoring_device, therm);
 110                 if (priv->ic)
 111                         return;
 112         }
 113
 114         /* The vbios doesn't provide the address of an exisiting monitoring
 115            device. Let's try our static list.
 116          */
 117         i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 118                       nv_board_infos, probe_monitoring_device, therm);
 119 }