1 /* $NetBSD: nouveau_nvkm_subdev_therm_gt215.c,v 1.4 2021/12/19 10:51:59 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
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: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_therm_gt215.c,v 1.4 2021/12/19 10:51:59 riastradh Exp $");
28
29 #include "priv.h"
30
31 #include <subdev/gpio.h>
32
33 int
gt215_therm_fan_sense(struct nvkm_therm * therm)34 gt215_therm_fan_sense(struct nvkm_therm *therm)
35 {
36 struct nvkm_device *device = therm->subdev.device;
37 u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff;
38 u32 ctrl = nvkm_rd32(device, 0x00e720);
39 if (ctrl & 0x00000001)
40 return tach * 60 / 2;
41 return -ENODEV;
42 }
43
44 static void
gt215_therm_init(struct nvkm_therm * therm)45 gt215_therm_init(struct nvkm_therm *therm)
46 {
47 struct nvkm_device *device = therm->subdev.device;
48 struct dcb_gpio_func *tach = &therm->fan->tach;
49
50 g84_sensor_setup(therm);
51
52 /* enable fan tach, count revolutions per-second */
53 nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
54 if (tach->func != DCB_GPIO_UNUSED) {
55 nvkm_wr32(device, 0x00e724, device->crystal * 1000);
56 nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16);
57 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
58 }
59 nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
60 }
61
62 static const struct nvkm_therm_func
63 gt215_therm = {
64 .init = gt215_therm_init,
65 .fini = g84_therm_fini,
66 .pwm_ctrl = nv50_fan_pwm_ctrl,
67 .pwm_get = nv50_fan_pwm_get,
68 .pwm_set = nv50_fan_pwm_set,
69 .pwm_clock = nv50_fan_pwm_clock,
70 .temp_get = g84_temp_get,
71 .fan_sense = gt215_therm_fan_sense,
72 .program_alarms = nvkm_therm_program_alarms_polling,
73 };
74
75 int
gt215_therm_new(struct nvkm_device * device,int index,struct nvkm_therm ** ptherm)76 gt215_therm_new(struct nvkm_device *device, int index,
77 struct nvkm_therm **ptherm)
78 {
79 return nvkm_therm_new_(>215_therm, device, index, ptherm);
80 }
81