summaryrefslogtreecommitdiff
path: root/src/mainboard/ibase/mb899/superio_hwm.c
blob: 6b2d77ae1b1812571f988004655052556b82acd4 (plain)
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
/* SPDX-License-Identifier: GPL-2.0-only */

#include <types.h>
#include <console/console.h>
#include <device/device.h>
#include <option.h>
#include <superio/hwm5_conf.h>
#include <superio/nuvoton/common/hwm.h>

#include "superio_hwm.h"

/* Hardware Monitor */

#define FAN_CRUISE_CONTROL_DISABLED	0
#define FAN_CRUISE_CONTROL_SPEED	1
#define FAN_CRUISE_CONTROL_THERMAL	2

#define FAN_SPEED_5625	0
//#define FAN_TEMPERATURE_30DEGC	0

#define HWM_BASE 0x290

struct fan_speed {
	u8 fan_in;
	u16 fan_speed;
};

// FANIN Target Speed Register
// FANIN = 337500 / RPM
struct fan_speed fan_speeds[] = {
	{ 0x3c, 5625 }, { 0x41, 5192 }, { 0x47, 4753 }, { 0x4e, 4326 },
	{ 0x56, 3924 }, { 0x5f, 3552 }, { 0x69, 3214 }, { 0x74, 2909 },
	{ 0x80, 2636 }, { 0x8d, 2393 }, { 0x9b, 2177 }, { 0xaa, 1985 },
	{ 0xba, 1814 }, { 0xcb, 1662 }, { 0xdd, 1527 }, { 0xf0, 1406 }
};

struct temperature {
	u8 deg_celsius;
	u8 deg_fahrenheit;
};

struct temperature temperatures[] = {
	{ 30,  86 }, { 33,  91 }, { 36,  96 }, { 39, 102 },
	{ 42, 107 }, { 45, 113 }, { 48, 118 }, { 51, 123 },
	{ 54, 129 }, { 57, 134 }, { 60, 140 }, { 63, 145 },
	{ 66, 150 }, { 69, 156 }, { 72, 161 }, { 75, 167 }
};

void hwm_setup(void)
{
	int cpufan_control = 0, sysfan_control = 0;
	int cpufan_speed = 0, sysfan_speed = 0;
	int cpufan_temperature = 0, sysfan_temperature = 0;

	cpufan_control = FAN_CRUISE_CONTROL_DISABLED;
	get_option(&cpufan_control, "cpufan_cruise_control");
	cpufan_speed = FAN_SPEED_5625;
	get_option(&cpufan_speed, "cpufan_speed");
	//cpufan_temperature = FAN_TEMPERATURE_30DEGC;
	//get_option(&cpufan_temperature, "cpufan_temperature");

	sysfan_control = FAN_CRUISE_CONTROL_DISABLED;
	get_option(&sysfan_control, "sysfan_cruise_control");
	sysfan_speed = FAN_SPEED_5625;
	get_option(&sysfan_speed, "sysfan_speed");
	//sysfan_temperature = FAN_TEMPERATURE_30DEGC;
	//get_option(&sysfan_temperature, "sysfan_temperature");

	// pnp_write_hwm5_index(HWM_BASE, 0x31, 0x20); // AVCC high limit
	// pnp_write_hwm5_index(HWM_BASE, 0x34, 0x06); // VIN2 low limit

	nuvoton_hwm_select_bank(HWM_BASE, 0);
	pnp_write_hwm5_index(HWM_BASE, 0x59, 0x20); // Diode Selection
	pnp_write_hwm5_index(HWM_BASE, 0x5d, 0x0f); // All Sensors Diode, not Thermistor

	nuvoton_hwm_select_bank(HWM_BASE, 4);
	pnp_write_hwm5_index(HWM_BASE, 0x54, 0xf1); // SYSTIN temperature offset
	pnp_write_hwm5_index(HWM_BASE, 0x55, 0x19); // CPUTIN temperature offset
	pnp_write_hwm5_index(HWM_BASE, 0x56, 0xfc); // AUXTIN temperature offset

	nuvoton_hwm_select_bank(HWM_BASE, 0x80); // Default

	u8 fan_config = 0;
	// 00 FANOUT is Manual Mode
	// 01 FANOUT is Thermal Cruise Mode
	// 10 FANOUT is Fan Speed Cruise Mode
	switch (cpufan_control) {
	case FAN_CRUISE_CONTROL_SPEED:	 fan_config |= (2 << 4); break;
	case FAN_CRUISE_CONTROL_THERMAL: fan_config |= (1 << 4); break;
	}
	switch (sysfan_control) {
	case FAN_CRUISE_CONTROL_SPEED:	 fan_config |= (2 << 2); break;
	case FAN_CRUISE_CONTROL_THERMAL: fan_config |= (1 << 2); break;
	}
	// This register must be written first
	pnp_write_hwm5_index(HWM_BASE, 0x04, fan_config);

	switch (cpufan_control) {
	case FAN_CRUISE_CONTROL_SPEED: /* CPUFANIN target speed */
		printk(BIOS_DEBUG, "Fan Cruise Control setting CPU fan to %d RPM\n",
				fan_speeds[cpufan_speed].fan_speed);
		pnp_write_hwm5_index(HWM_BASE, 0x06, fan_speeds[cpufan_speed].fan_in);
		break;
	case FAN_CRUISE_CONTROL_THERMAL: /* CPUFANIN target temperature */
		printk(BIOS_DEBUG, "Fan Cruise Control setting CPU fan to activation at %d deg C/%d deg F\n",
				temperatures[cpufan_temperature].deg_celsius,
				temperatures[cpufan_temperature].deg_fahrenheit);
		pnp_write_hwm5_index(HWM_BASE, 0x06,
				     temperatures[cpufan_temperature].deg_celsius);
		break;
	}

	switch (sysfan_control) {
	case FAN_CRUISE_CONTROL_SPEED: /* SYSFANIN target speed */
		printk(BIOS_DEBUG, "Fan Cruise Control setting system fan to %d RPM\n",
				fan_speeds[sysfan_speed].fan_speed);
		pnp_write_hwm5_index(HWM_BASE, 0x05, fan_speeds[sysfan_speed].fan_in);
		break;
	case FAN_CRUISE_CONTROL_THERMAL: /* SYSFANIN target temperature */
		printk(BIOS_DEBUG, "Fan Cruise Control setting system fan to activation at %d deg C/%d deg F\n",
				temperatures[sysfan_temperature].deg_celsius,
				temperatures[sysfan_temperature].deg_fahrenheit);
		pnp_write_hwm5_index(HWM_BASE,
				     0x05, temperatures[sysfan_temperature].deg_celsius);
		break;
	}

	pnp_write_hwm5_index(HWM_BASE, 0x0e, 0x02); // Fan Output Step Down Time
	pnp_write_hwm5_index(HWM_BASE, 0x0f, 0x02); // Fan Output Step Up Time

	pnp_write_hwm5_index(HWM_BASE, 0x47, 0xaf); // FAN divisor register
	pnp_write_hwm5_index(HWM_BASE, 0x4b, 0x84); // AUXFANIN speed divisor

	pnp_write_hwm5_index(HWM_BASE, 0x40, 0x01); // Init, but no SMI#
}