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}