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->i2c);
  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->driver || client->driver->detect(client, info)) {
  44                 i2c_unregister_device(client);
  45                 return false;
  46         }
  47
  48         nv_info(priv,
  49                 "Found an %s at address 0x%x (controlled by lm_sensors)\n",
  50                 info->type, info->addr);
  51         priv->ic = client;
  52
  53         return true;
  54 }
  55
  56 void
  57 nouveau_therm_ic_ctor(struct nouveau_therm *therm)
  58 {
  59         struct nouveau_therm_priv *priv = (void *)therm;
  60         struct nouveau_bios *bios = nouveau_bios(therm);
  61         struct nouveau_i2c *i2c = nouveau_i2c(therm);
  62         struct nvbios_extdev_func extdev_entry;
  63         struct i2c_board_info info[] = {
  64                 { I2C_BOARD_INFO("w83l785ts", 0x2d) },
  65                 { I2C_BOARD_INFO("w83781d", 0x2d) },
  66                 { I2C_BOARD_INFO("adt7473", 0x2e) },
  67                 { I2C_BOARD_INFO("adt7473", 0x2d) },
  68                 { I2C_BOARD_INFO("adt7473", 0x2c) },
  69                 { I2C_BOARD_INFO("f75375", 0x2e) },
  70                 { I2C_BOARD_INFO("lm99", 0x4c) },
  71                 { I2C_BOARD_INFO("lm90", 0x4c) },
  72                 { I2C_BOARD_INFO("lm90", 0x4d) },
  73                 { I2C_BOARD_INFO("adm1021", 0x18) },
  74                 { I2C_BOARD_INFO("adm1021", 0x19) },
  75                 { I2C_BOARD_INFO("adm1021", 0x1a) },
  76                 { I2C_BOARD_INFO("adm1021", 0x29) },
  77                 { I2C_BOARD_INFO("adm1021", 0x2a) },
  78                 { I2C_BOARD_INFO("adm1021", 0x2b) },
  79                 { I2C_BOARD_INFO("adm1021", 0x4c) },
  80                 { I2C_BOARD_INFO("adm1021", 0x4d) },
  81                 { I2C_BOARD_INFO("adm1021", 0x4e) },
  82                 { I2C_BOARD_INFO("lm63", 0x18) },
  83                 { I2C_BOARD_INFO("lm63", 0x4e) },
  84                 { }
  85         };
  86
  87         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
  88                 struct i2c_board_info board[] = {
  89                         { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) },
  90                         { }
  91                 };
  92
  93                 i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
  94                                   board, probe_monitoring_device);
  95                 if (priv->ic)
  96                         return;
  97         }
  98
  99         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
 100                 struct i2c_board_info board[] = {
 101                         { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) },
 102                         { }
 103                 };
 104
 105                 i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 106                                   board, probe_monitoring_device);
 107                 if (priv->ic)
 108                         return;
 109         }
 110
 111         /* The vbios doesn't provide the address of an exisiting monitoring
 112            device. Let's try our static list.
 113          */
 114         i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device", info,
 115                       probe_monitoring_device);
 116 }