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
probe_monitoring_device(struct nvkm_i2c_bus * bus,struct i2c_board_info * info,void * data)30 probe_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 
57 static struct nvkm_i2c_bus_probe
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
nvkm_therm_ic_ctor(struct nvkm_therm * therm)83 nvkm_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