blob: 556538210918850d93666223fba2c4f26bbb7beb [file] [log] [blame]
Nico Hubera53266b2013-05-02 15:26:08 +02001/*
2 * This file is part of the coreboot project.
3 *
4 * Copyright (C) 2013 secunet Security Networks AG
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
Nico Hubera53266b2013-05-02 15:26:08 +020014 */
15
16#include <stdlib.h>
17#include <console/console.h>
18#include <device/device.h>
19#include <device/pnp.h>
20#include <ec/acpi/ec.h>
21#include <pc80/mc146818rtc.h>
22
23#include "ec.h"
24#include "chip.h"
25
26typedef struct ec_kontron_it8516e_config config_t;
27
28enum { /* EC commands */
Nico Huber6d6a2ac2013-07-12 14:35:00 +020029 IT8516E_CMD_SET_SYSTEMP_TYPE = 0x06,
30 IT8516E_CMD_GET_SYSTEMP_TYPE = 0x07,
Nico Hubera53266b2013-05-02 15:26:08 +020031 IT8516E_CMD_GET_FAN_MODE = 0x10,
32 IT8516E_CMD_SET_FAN_MODE = 0x11,
33 IT8516E_CMD_GET_FAN_PWM = 0x12,
34 IT8516E_CMD_SET_FAN_PWM = 0x13,
35 IT8516E_CMD_GET_FAN_SPEED = 0x14,
36 IT8516E_CMD_SET_FAN_SPEED = 0x15,
37 IT8516E_CMD_GET_FAN_TEMP = 0x16,
38 IT8516E_CMD_SET_FAN_TEMP = 0x17,
Nico Huber9ce71b32013-07-12 14:43:11 +020039 IT8516E_CMD_SET_FAN_LIMITS = 0x1a,
Nico Hubera53266b2013-05-02 15:26:08 +020040};
41
Nico Huber1f9f6782013-07-18 11:50:59 +020042/**
43 * Sets the type of the external temperature sensor used
44 *
45 * @param type Type of sensor to set
46 */
Nico Huber6d6a2ac2013-07-12 14:35:00 +020047static void it8516e_set_systemp_type(const u8 type)
48{
49 if (send_ec_command(IT8516E_CMD_SET_SYSTEMP_TYPE))
50 return;
51 send_ec_data(type);
52}
53
Nico Huber1f9f6782013-07-18 11:50:59 +020054/**
55 * Sets the operating mode of a fan
56 *
57 * @param idx Selects the fan; 0: CPU, 1: System
58 * @param mode Mode to set
59 */
Nico Hubera53266b2013-05-02 15:26:08 +020060static void it8516e_set_fan_mode(const u8 idx, const u8 mode)
61{
62 if (send_ec_command(IT8516E_CMD_SET_FAN_MODE))
63 return;
64 if (send_ec_data(idx))
65 return;
66 send_ec_data(mode);
67}
68
Nico Huber1f9f6782013-07-18 11:50:59 +020069/**
70 * Sets the PWM rate of a fan in IT8516E_MODE_PWM
71 *
72 * @param idx Selects the fan; 0: CPU, 1: System
73 * @param pwm PWM rate measured in 255ths
74 */
Nico Hubera53266b2013-05-02 15:26:08 +020075static void it8516e_set_fan_pwm(const u8 idx, const u8 pwm)
76{
77 if (send_ec_command(IT8516E_CMD_SET_FAN_PWM))
78 return;
79 if (send_ec_data(idx))
80 return;
81 send_ec_data(pwm);
82}
83
Nico Huber1f9f6782013-07-18 11:50:59 +020084/**
85 * Sets the target speed in RPM for a fan in IT8516E_MODE_SPEED
86 *
87 * @param idx Selects the fan; 0: CPU, 1: System
88 * @param speed Speed in RPM
89 */
Nico Hubera53266b2013-05-02 15:26:08 +020090static void it8516e_set_fan_speed(const u8 idx, const u16 speed)
91{
92 if (send_ec_command(IT8516E_CMD_SET_FAN_SPEED))
93 return;
94 if (send_ec_data(idx))
95 return;
96 if (send_ec_data(speed & 0xff))
97 return;
98 send_ec_data(speed >> 8);
99}
100
Nico Huber1f9f6782013-07-18 11:50:59 +0200101/**
102 * Sets the target temperature for a fan in IT8516E_MODE_THERMAL
103 *
104 * @param idx Selects the fan; 0: CPU, 1: System
105 * @param temp Temperature in 64ths degree C
106 */
Nico Huber260c33b2013-07-18 11:27:30 +0200107static void it8516e_set_fan_temperature(const u8 idx, const u16 temp)
Nico Hubera53266b2013-05-02 15:26:08 +0200108{
109 if (send_ec_command(IT8516E_CMD_SET_FAN_TEMP))
110 return;
111 if (send_ec_data(idx))
112 return;
Nico Huber260c33b2013-07-18 11:27:30 +0200113 if (send_ec_data(temp & 0xff))
Nico Hubera53266b2013-05-02 15:26:08 +0200114 return;
Nico Huber260c33b2013-07-18 11:27:30 +0200115 send_ec_data(temp >> 8);
Nico Hubera53266b2013-05-02 15:26:08 +0200116}
117
Nico Huber1f9f6782013-07-18 11:50:59 +0200118/**
119 * Sets the minimum and maximum PWM rate of a fan in IT8516E_MODE_THERMAL
120 *
121 * @param idx Selects the fan; 0: CPU, 1: System
122 * @param min Minimum PWM rate in %
123 * @param max Maximum PWM rate in %
124 */
Nico Huber9ce71b32013-07-12 14:43:11 +0200125static void it8516e_set_fan_limits(const u8 idx, const u8 min, const u8 max)
126{
127 if (send_ec_command(IT8516E_CMD_SET_FAN_LIMITS))
128 return;
129 if (send_ec_data(idx))
130 return;
131 if (send_ec_data(min))
132 return;
133 send_ec_data(max);
134}
135
Nico Hubera53266b2013-05-02 15:26:08 +0200136static void it8516e_set_fan_from_options(const config_t *const config,
137 const u8 fan_idx)
138{
139 static char fanX_mode[] = "fanX_mode";
140 static char fanX_target[] = "fanX_target";
Nico Huber9ce71b32013-07-12 14:43:11 +0200141 static char fanX_min[] = "fanX_min";
142 static char fanX_max[] = "fanX_max";
Nico Hubera53266b2013-05-02 15:26:08 +0200143
Nico Huber9ce71b32013-07-12 14:43:11 +0200144 u8 fan_mode = config->default_fan_mode[fan_idx];
145 u16 fan_target = config->default_fan_target[fan_idx];
146 u8 fan_min = config->default_fan_min[fan_idx];
147 u8 fan_max = config->default_fan_max[fan_idx];
Nico Hubera53266b2013-05-02 15:26:08 +0200148
149 fanX_mode[3] = '1' + fan_idx;
150 get_option(&fan_mode, fanX_mode);
151 if (!fan_mode)
152 fan_mode = IT8516E_MODE_AUTO;
153 it8516e_set_fan_mode(fan_idx, fan_mode);
154
155 fanX_target[3] = '1' + fan_idx;
156 get_option(&fan_target, fanX_target);
157 switch (fan_mode) {
158 case IT8516E_MODE_AUTO:
159 printk(BIOS_DEBUG,
160 "Setting it8516e fan%d "
161 "control to auto.\n",
162 fan_idx + 1);
163 break;
164 case IT8516E_MODE_PWM:
165 printk(BIOS_DEBUG,
166 "Setting it8516e fan%d "
167 "control to %d%% PWM.\n",
168 fan_idx + 1, fan_target);
Nico Huberca4f0732013-07-18 12:27:00 +0200169 if (fan_target > 100) /* Constrain to 100% */
170 fan_target = 100;
Nico Huber942b6c22013-07-12 14:40:23 +0200171 it8516e_set_fan_pwm(fan_idx, (fan_target * 255) / 100);
Nico Hubera53266b2013-05-02 15:26:08 +0200172 break;
173 case IT8516E_MODE_SPEED:
174 printk(BIOS_DEBUG,
175 "Setting it8516e fan%d "
176 "control to %d RPMs.\n",
177 fan_idx + 1, fan_target);
178 it8516e_set_fan_speed(fan_idx, fan_target);
179 break;
180 case IT8516E_MODE_THERMAL:
181 printk(BIOS_DEBUG,
Nico Huber9ce71b32013-07-12 14:43:11 +0200182 "Setting it8516e fan%d control to %d C.\n",
Nico Hubera53266b2013-05-02 15:26:08 +0200183 fan_idx + 1, fan_target);
Nico Huberca4f0732013-07-18 12:27:00 +0200184 if (fan_target > 1024) /* Constrain to 1K */
185 fan_target = 1024;
Nico Huber260c33b2013-07-18 11:27:30 +0200186 it8516e_set_fan_temperature(fan_idx, fan_target * 64);
Nico Huber9ce71b32013-07-12 14:43:11 +0200187
188 fanX_min[3] = '1' + fan_idx;
189 fanX_max[3] = '1' + fan_idx;
190 get_option(&fan_min, fanX_min);
191 get_option(&fan_max, fanX_max);
192
193 if (!fan_max || fan_max > 100) /* Constrain fan_max to 100% */
194 fan_max = 100;
195 if (fan_min >= 100) /* Constrain fan_min to 99% */
196 fan_min = 99;
197 if (fan_max <= fan_min) /* If fan_min is the higher of the two,
198 it's safer for the hardware to keep
199 its value. Therefore, update fan_max. */
200 fan_max = fan_min + 1;
201
202 printk(BIOS_DEBUG,
203 "Setting it8516e fan%d limits to %d%% - %d%% PWM.\n",
204 fan_idx + 1, fan_min, fan_max);
205 it8516e_set_fan_limits(fan_idx, fan_min, fan_max);
Nico Hubera53266b2013-05-02 15:26:08 +0200206 break;
207 }
208}
209
Edward O'Callaghan2c9d2cf2014-10-27 23:29:29 +1100210static void it8516e_pm2_init(struct device *dev)
Nico Hubera53266b2013-05-02 15:26:08 +0200211{
212 const config_t *const config = dev->chip_info;
213
214 /* TODO: Set frequency / divider? */
215
216 ec_set_ports(find_resource(dev, PNP_IDX_IO1)->base,
217 find_resource(dev, PNP_IDX_IO0)->base);
218
Nico Huber6d6a2ac2013-07-12 14:35:00 +0200219 u8 systemp_type = config->default_systemp;
220 get_option(&systemp_type, "systemp_type");
221 if (systemp_type >= IT8516E_SYSTEMP_LASTPLUSONE)
222 systemp_type = IT8516E_SYSTEMP_NONE;
223 it8516e_set_systemp_type(systemp_type);
224
Nico Hubera53266b2013-05-02 15:26:08 +0200225 it8516e_set_fan_from_options(config, 0);
226 it8516e_set_fan_from_options(config, 1);
227}
228
229static struct device_operations it8516e_pm2_ops = {
Nico Huber9cb09412013-06-15 15:30:19 +0200230 .read_resources = pnp_read_resources,
231 .set_resources = pnp_set_resources,
232 .enable_resources = pnp_enable_resources,
233 .enable = pnp_enable,
234 .init = it8516e_pm2_init
Nico Hubera53266b2013-05-02 15:26:08 +0200235};
236
237static struct pnp_info it8516e_dev_infos[] = {
Samuel Holland7daac912017-06-06 22:55:01 -0500238 { NULL, IT8516E_LDN_UART1, PNP_IO0 | PNP_IRQ0, 0x07f8, },
239 { NULL, IT8516E_LDN_UART2, PNP_IO0 | PNP_IRQ0, 0x07f8, },
240 { NULL, IT8516E_LDN_SWUC, PNP_IO0 | PNP_IRQ0, 0xffe0, },
Nico Hubera53266b2013-05-02 15:26:08 +0200241 { NULL, IT8516E_LDN_MOUSE, PNP_IRQ0, },
Samuel Holland7daac912017-06-06 22:55:01 -0500242 { NULL, IT8516E_LDN_KBD, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff, },
243 { NULL, IT8516E_LDN_SMFI, PNP_IO0 | PNP_IRQ0, 0xfff0, },
244 { NULL, IT8516E_LDN_BRAM, PNP_IO0 | PNP_IO1, 0xfffe, 0xfffe, },
245 { NULL, IT8516E_LDN_PM1, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff, },
246 { &it8516e_pm2_ops, IT8516E_LDN_PM2, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff, },
247 { NULL, IT8516E_LDN_PM3, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff, },
Nico Hubera53266b2013-05-02 15:26:08 +0200248};
249
Edward O'Callaghan2c9d2cf2014-10-27 23:29:29 +1100250static void it8516e_enable(struct device *dev)
Nico Hubera53266b2013-05-02 15:26:08 +0200251{
252 pnp_enable_devices(dev, &pnp_ops,
253 ARRAY_SIZE(it8516e_dev_infos), it8516e_dev_infos);
254}
255
256const struct chip_operations ec_kontron_it8516e_ops = {
257 CHIP_NAME("Kontron (Fintec/ITE) IT8516E EC")
258 .enable_dev = it8516e_enable
259};