1 /*
2 * Copyright 2012 Red Hat Inc.
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: Ben Skeggs
23 */
24 #include "priv.h"
25
26 #include <subdev/gpio.h>
27
28 int
gt215_therm_fan_sense(struct nvkm_therm * therm)29 gt215_therm_fan_sense(struct nvkm_therm *therm)
30 {
31 struct nvkm_device *device = therm->subdev.device;
32 u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff;
33 u32 ctrl = nvkm_rd32(device, 0x00e720);
34 if (ctrl & 0x00000001)
35 return tach * 60 / 2;
36 return -ENODEV;
37 }
38
39 void
gt215_therm_init(struct nvkm_therm * therm)40 gt215_therm_init(struct nvkm_therm *therm)
41 {
42 struct nvkm_device *device = therm->subdev.device;
43 struct dcb_gpio_func *tach = &therm->fan->tach;
44
45 g84_sensor_setup(therm);
46
47 /* enable fan tach, count revolutions per-second */
48 nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
49 if (tach->func != DCB_GPIO_UNUSED) {
50 nvkm_wr32(device, 0x00e724, device->crystal * 1000);
51 nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16);
52 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
53 }
54 nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
55 }
56
57 static const struct nvkm_therm_func
58 gt215_therm = {
59 .init = gt215_therm_init,
60 .fini = g84_therm_fini,
61 .pwm_ctrl = nv50_fan_pwm_ctrl,
62 .pwm_get = nv50_fan_pwm_get,
63 .pwm_set = nv50_fan_pwm_set,
64 .pwm_clock = nv50_fan_pwm_clock,
65 .temp_get = g84_temp_get,
66 .fan_sense = gt215_therm_fan_sense,
67 .program_alarms = nvkm_therm_program_alarms_polling,
68 };
69
70 int
gt215_therm_new(struct nvkm_device * device,int index,struct nvkm_therm ** ptherm)71 gt215_therm_new(struct nvkm_device *device, int index,
72 struct nvkm_therm **ptherm)
73 {
74 return nvkm_therm_new_(>215_therm, device, index, ptherm);
75 }
76
