LXR linux/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
  29static bool
  30probe_monitoring_device(struct nvkm_i2c_bus *bus,
  31                        struct i2c_board_info *info, void *data)
  32{
  33        struct nvkm_therm *therm = data;
  34        struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
  35        struct i2c_client *client;
  36
  37        request_module("%s%s", I2C_MODULE_PREFIX, info->type);
  38
  39        client = i2c_new_client_device(&bus->i2c, info);
  40        if (IS_ERR(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        nvkm_debug(&therm->subdev,
  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        therm->ic = client;
  54        return true;
  55}
  56
  57static struct nvkm_i2c_bus_probe
  58nv_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
  82void
  83nvkm_therm_ic_ctor(struct nvkm_therm *therm)
  84{
  85        struct nvkm_device *device = therm->subdev.device;
  86        struct nvkm_bios *bios = device->bios;
  87        struct nvkm_i2c *i2c = device->i2c;
  88        struct nvkm_i2c_bus *bus;
  89        struct nvbios_extdev_func extdev_entry;
  90
  91        bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_PRI);
  92        if (!bus)
  93                return;
  94
  95        if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
  96                struct nvkm_i2c_bus_probe board[] = {
  97                  { { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) }, 0},
  98                  { }
  99                };
 100
 101                nvkm_i2c_bus_probe(bus, "monitoring device", board,
 102                                   probe_monitoring_device, therm);
 103                if (therm->ic)
 104                        return;
 105        }
 106
 107        if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
 108                struct nvkm_i2c_bus_probe board[] = {
 109                  { { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) }, 20 },
 110                  { }
 111                };
 112
 113                nvkm_i2c_bus_probe(bus, "monitoring device", board,
 114                                   probe_monitoring_device, therm);
 115                if (therm->ic)
 116                        return;
 117        }
 118
 119        if (nvbios_extdev_skip_probe(bios))
 120                return;
 121
 122        /* The vbios doesn't provide the address of an exisiting monitoring
 123           device. Let's try our static list.
 124         */
 125        nvkm_i2c_bus_probe(bus, "monitoring device", nv_board_infos,
 126                           probe_monitoring_device, therm);
 127}
 128