1 /* $NetBSD: nouveau_nvkm_subdev_therm_ic.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Nouveau community
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Martin Peres
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_therm_ic.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $");
28
29 #include "priv.h"
30
31 #include <subdev/bios/extdev.h>
32 #include <subdev/i2c.h>
33
34 static bool
probe_monitoring_device(struct nvkm_i2c_bus * bus,struct i2c_board_info * info,void * data)35 probe_monitoring_device(struct nvkm_i2c_bus *bus,
36 struct i2c_board_info *info, void *data)
37 {
38 #ifdef __NetBSD__
39 return false;
40 #else
41 struct nvkm_therm *therm = data;
42 struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
43 struct i2c_client *client;
44
45 request_module("%s%s", I2C_MODULE_PREFIX, info->type);
46
47 client = i2c_new_device(&bus->i2c, info);
48 if (!client)
49 return false;
50
51 if (!client->dev.driver ||
52 to_i2c_driver(client->dev.driver)->detect(client, info)) {
53 i2c_unregister_device(client);
54 return false;
55 }
56
57 nvkm_debug(&therm->subdev,
58 "Found an %s at address 0x%x (controlled by lm_sensors, "
59 "temp offset %+i C)\n",
60 info->type, info->addr, sensor->offset_constant);
61 therm->ic = client;
62 return true;
63 #endif
64 }
65
66 static struct nvkm_i2c_bus_probe
67 nv_board_infos[] = {
68 { { I2C_BOARD_INFO("w83l785ts", 0x2d) }, 0 },
69 { { I2C_BOARD_INFO("w83781d", 0x2d) }, 0 },
70 { { I2C_BOARD_INFO("adt7473", 0x2e) }, 40 },
71 { { I2C_BOARD_INFO("adt7473", 0x2d) }, 40 },
72 { { I2C_BOARD_INFO("adt7473", 0x2c) }, 40 },
73 { { I2C_BOARD_INFO("f75375", 0x2e) }, 0 },
74 { { I2C_BOARD_INFO("lm99", 0x4c) }, 0 },
75 { { I2C_BOARD_INFO("lm90", 0x4c) }, 0 },
76 { { I2C_BOARD_INFO("lm90", 0x4d) }, 0 },
77 { { I2C_BOARD_INFO("adm1021", 0x18) }, 0 },
78 { { I2C_BOARD_INFO("adm1021", 0x19) }, 0 },
79 { { I2C_BOARD_INFO("adm1021", 0x1a) }, 0 },
80 { { I2C_BOARD_INFO("adm1021", 0x29) }, 0 },
81 { { I2C_BOARD_INFO("adm1021", 0x2a) }, 0 },
82 { { I2C_BOARD_INFO("adm1021", 0x2b) }, 0 },
83 { { I2C_BOARD_INFO("adm1021", 0x4c) }, 0 },
84 { { I2C_BOARD_INFO("adm1021", 0x4d) }, 0 },
85 { { I2C_BOARD_INFO("adm1021", 0x4e) }, 0 },
86 { { I2C_BOARD_INFO("lm63", 0x18) }, 0 },
87 { { I2C_BOARD_INFO("lm63", 0x4e) }, 0 },
88 { }
89 };
90
91 void
nvkm_therm_ic_ctor(struct nvkm_therm * therm)92 nvkm_therm_ic_ctor(struct nvkm_therm *therm)
93 {
94 struct nvkm_device *device = therm->subdev.device;
95 struct nvkm_bios *bios = device->bios;
96 struct nvkm_i2c *i2c = device->i2c;
97 struct nvkm_i2c_bus *bus;
98 struct nvbios_extdev_func extdev_entry;
99
100 bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_PRI);
101 if (!bus)
102 return;
103
104 if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
105 struct nvkm_i2c_bus_probe board[] = {
106 { { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) }, 0},
107 { }
108 };
109
110 nvkm_i2c_bus_probe(bus, "monitoring device", board,
111 probe_monitoring_device, therm);
112 if (therm->ic)
113 return;
114 }
115
116 if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
117 struct nvkm_i2c_bus_probe board[] = {
118 { { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) }, 20 },
119 { }
120 };
121
122 nvkm_i2c_bus_probe(bus, "monitoring device", board,
123 probe_monitoring_device, therm);
124 if (therm->ic)
125 return;
126 }
127
128 if (nvbios_extdev_skip_probe(bios))
129 return;
130
131 /* The vbios doesn't provide the address of an exisiting monitoring
132 device. Let's try our static list.
133 */
134 nvkm_i2c_bus_probe(bus, "monitoring device", nv_board_infos,
135 probe_monitoring_device, therm);
136 }
137