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
33int
34gt215_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
44static void
45gt215_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
62static const struct nvkm_therm_func
63gt215_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
75int
76gt215_therm_new(struct nvkm_device *device, int index,
77	       struct nvkm_therm **ptherm)
78{
79	return nvkm_therm_new_(&gt215_therm, device, index, ptherm);
80}
81