1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
* Martin Peres
*/
#include "priv.h"
static int
pwm_info(struct nvkm_therm *therm, int *line, int *ctrl, int *indx)
{
struct nvkm_subdev *subdev = &therm->subdev;
if (*line == 0x04) {
*ctrl = 0x00e100;
*line = 4;
*indx = 0;
} else
if (*line == 0x09) {
*ctrl = 0x00e100;
*line = 9;
*indx = 1;
} else
if (*line == 0x10) {
*ctrl = 0x00e28c;
*line = 0;
*indx = 0;
} else {
nvkm_error(subdev, "unknown pwm ctrl for gpio %d\n", *line);
return -ENODEV;
}
return 0;
}
int
nv50_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
{
struct nvkm_device *device = therm->subdev.device;
u32 data = enable ? 0x00000001 : 0x00000000;
int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id);
if (ret == 0)
nvkm_mask(device, ctrl, 0x00010001 << line, data << line);
return ret;
}
int
nv50_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
{
struct nvkm_device *device = therm->subdev.device;
int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id);
if (ret)
return ret;
if (nvkm_rd32(device, ctrl) & (1 << line)) {
*divs = nvkm_rd32(device, 0x00e114 + (id * 8));
*duty = nvkm_rd32(device, 0x00e118 + (id * 8));
return 0;
}
return -EINVAL;
}
int
nv50_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
{
struct nvkm_device *device = therm->subdev.device;
int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id);
if (ret)
return ret;
nvkm_wr32(device, 0x00e114 + (id * 8), divs);
nvkm_wr32(device, 0x00e118 + (id * 8), duty | 0x80000000);
return 0;
}
int
nv50_fan_pwm_clock(struct nvkm_therm *therm, int line)
{
struct nvkm_device *device = therm->subdev.device;
int pwm_clock;
/* determine the PWM source clock */
if (device->chipset > 0x50 && device->chipset < 0x94) {
u8 pwm_div = nvkm_rd32(device, 0x410c);
if (nvkm_rd32(device, 0xc040) & 0x800000) {
/* Use the HOST clock (100 MHz)
* Where does this constant(2.4) comes from? */
pwm_clock = (100000000 >> pwm_div) * 10 / 24;
} else {
/* Where does this constant(20) comes from? */
pwm_clock = (device->crystal * 1000) >> pwm_div;
pwm_clock /= 20;
}
} else {
pwm_clock = (device->crystal * 1000) / 20;
}
return pwm_clock;
}
static void
nv50_sensor_setup(struct nvkm_therm *therm)
{
struct nvkm_device *device = therm->subdev.device;
nvkm_mask(device, 0x20010, 0x40000000, 0x0);
mdelay(20); /* wait for the temperature to stabilize */
}
static int
nv50_temp_get(struct nvkm_therm *therm)
{
struct nvkm_device *device = therm->subdev.device;
struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
int core_temp;
core_temp = nvkm_rd32(device, 0x20014) & 0x3fff;
/* if the slope or the offset is unset, do no use the sensor */
if (!sensor->slope_div || !sensor->slope_mult ||
!sensor->offset_num || !sensor->offset_den)
return -ENODEV;
core_temp = core_temp * sensor->slope_mult / sensor->slope_div;
core_temp = core_temp + sensor->offset_num / sensor->offset_den;
core_temp = core_temp + sensor->offset_constant - 8;
/* reserve negative temperatures for errors */
if (core_temp < 0)
core_temp = 0;
return core_temp;
}
static void
nv50_therm_init(struct nvkm_therm *therm)
{
nv50_sensor_setup(therm);
}
static const struct nvkm_therm_func
nv50_therm = {
.init = nv50_therm_init,
.intr = nv40_therm_intr,
.pwm_ctrl = nv50_fan_pwm_ctrl,
.pwm_get = nv50_fan_pwm_get,
.pwm_set = nv50_fan_pwm_set,
.pwm_clock = nv50_fan_pwm_clock,
.temp_get = nv50_temp_get,
.program_alarms = nvkm_therm_program_alarms_polling,
};
int
nv50_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_therm **ptherm)
{
return nvkm_therm_new_(&nv50_therm, device, type, inst, ptherm);
}
|
