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
|
/* Copyright 2022 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Physical fans. These are logically separate from pwm_channels. */
#include "common.h"
#include "compile_time_macros.h"
#include "console.h"
#include "fan_chip.h"
#include "fan.h"
#include "hooks.h"
#include "pwm.h"
#ifndef CONFIG_FANS
/*
* TODO(b/233126129): use static fan speeds until fan and sensors are
* tuned. for now, use:
*
* AP off: 33%
* AP on: 50%
*/
static void fan_slow(void)
{
const int duty_pct = 33;
ccprints("%s: speed %d%%", __func__, duty_pct);
pwm_enable(PWM_CH_FAN1, 1);
pwm_set_duty(PWM_CH_FAN1, duty_pct);
pwm_enable(PWM_CH_FAN2, 1);
pwm_set_duty(PWM_CH_FAN2, duty_pct);
}
static void fan_max(void)
{
const int duty_pct = 50;
ccprints("%s: speed %d%%", __func__, duty_pct);
pwm_enable(PWM_CH_FAN1, 1);
pwm_set_duty(PWM_CH_FAN1, duty_pct);
pwm_enable(PWM_CH_FAN2, 1);
pwm_set_duty(PWM_CH_FAN2, duty_pct);
}
DECLARE_HOOK(HOOK_INIT, fan_slow, HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, fan_slow, HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, fan_slow, HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_CHIPSET_RESET, fan_max, HOOK_PRIO_FIRST);
DECLARE_HOOK(HOOK_CHIPSET_RESUME, fan_max, HOOK_PRIO_DEFAULT);
#endif /* CONFIG_FANS */
|
