Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 1 | /* |
| 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. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #include <stdlib.h> |
| 21 | #include <console/console.h> |
| 22 | #include <device/device.h> |
| 23 | #include <device/pnp.h> |
| 24 | #include <ec/acpi/ec.h> |
| 25 | #include <pc80/mc146818rtc.h> |
| 26 | |
| 27 | #include "ec.h" |
| 28 | #include "chip.h" |
| 29 | |
| 30 | typedef struct ec_kontron_it8516e_config config_t; |
| 31 | |
| 32 | enum { /* EC commands */ |
Nico Huber | 6d6a2ac | 2013-07-12 14:35:00 +0200 | [diff] [blame] | 33 | IT8516E_CMD_SET_SYSTEMP_TYPE = 0x06, |
| 34 | IT8516E_CMD_GET_SYSTEMP_TYPE = 0x07, |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 35 | IT8516E_CMD_GET_FAN_MODE = 0x10, |
| 36 | IT8516E_CMD_SET_FAN_MODE = 0x11, |
| 37 | IT8516E_CMD_GET_FAN_PWM = 0x12, |
| 38 | IT8516E_CMD_SET_FAN_PWM = 0x13, |
| 39 | IT8516E_CMD_GET_FAN_SPEED = 0x14, |
| 40 | IT8516E_CMD_SET_FAN_SPEED = 0x15, |
| 41 | IT8516E_CMD_GET_FAN_TEMP = 0x16, |
| 42 | IT8516E_CMD_SET_FAN_TEMP = 0x17, |
Nico Huber | 9ce71b3 | 2013-07-12 14:43:11 +0200 | [diff] [blame] | 43 | IT8516E_CMD_SET_FAN_LIMITS = 0x1a, |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 44 | }; |
| 45 | |
Nico Huber | 1f9f678 | 2013-07-18 11:50:59 +0200 | [diff] [blame^] | 46 | /** |
| 47 | * Sets the type of the external temperature sensor used |
| 48 | * |
| 49 | * @param type Type of sensor to set |
| 50 | */ |
Nico Huber | 6d6a2ac | 2013-07-12 14:35:00 +0200 | [diff] [blame] | 51 | static void it8516e_set_systemp_type(const u8 type) |
| 52 | { |
| 53 | if (send_ec_command(IT8516E_CMD_SET_SYSTEMP_TYPE)) |
| 54 | return; |
| 55 | send_ec_data(type); |
| 56 | } |
| 57 | |
Nico Huber | 1f9f678 | 2013-07-18 11:50:59 +0200 | [diff] [blame^] | 58 | /** |
| 59 | * Sets the operating mode of a fan |
| 60 | * |
| 61 | * @param idx Selects the fan; 0: CPU, 1: System |
| 62 | * @param mode Mode to set |
| 63 | */ |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 64 | static void it8516e_set_fan_mode(const u8 idx, const u8 mode) |
| 65 | { |
| 66 | if (send_ec_command(IT8516E_CMD_SET_FAN_MODE)) |
| 67 | return; |
| 68 | if (send_ec_data(idx)) |
| 69 | return; |
| 70 | send_ec_data(mode); |
| 71 | } |
| 72 | |
Nico Huber | 1f9f678 | 2013-07-18 11:50:59 +0200 | [diff] [blame^] | 73 | /** |
| 74 | * Sets the PWM rate of a fan in IT8516E_MODE_PWM |
| 75 | * |
| 76 | * @param idx Selects the fan; 0: CPU, 1: System |
| 77 | * @param pwm PWM rate measured in 255ths |
| 78 | */ |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 79 | static void it8516e_set_fan_pwm(const u8 idx, const u8 pwm) |
| 80 | { |
| 81 | if (send_ec_command(IT8516E_CMD_SET_FAN_PWM)) |
| 82 | return; |
| 83 | if (send_ec_data(idx)) |
| 84 | return; |
| 85 | send_ec_data(pwm); |
| 86 | } |
| 87 | |
Nico Huber | 1f9f678 | 2013-07-18 11:50:59 +0200 | [diff] [blame^] | 88 | /** |
| 89 | * Sets the target speed in RPM for a fan in IT8516E_MODE_SPEED |
| 90 | * |
| 91 | * @param idx Selects the fan; 0: CPU, 1: System |
| 92 | * @param speed Speed in RPM |
| 93 | */ |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 94 | static void it8516e_set_fan_speed(const u8 idx, const u16 speed) |
| 95 | { |
| 96 | if (send_ec_command(IT8516E_CMD_SET_FAN_SPEED)) |
| 97 | return; |
| 98 | if (send_ec_data(idx)) |
| 99 | return; |
| 100 | if (send_ec_data(speed & 0xff)) |
| 101 | return; |
| 102 | send_ec_data(speed >> 8); |
| 103 | } |
| 104 | |
Nico Huber | 1f9f678 | 2013-07-18 11:50:59 +0200 | [diff] [blame^] | 105 | /** |
| 106 | * Sets the target temperature for a fan in IT8516E_MODE_THERMAL |
| 107 | * |
| 108 | * @param idx Selects the fan; 0: CPU, 1: System |
| 109 | * @param temp Temperature in 64ths degree C |
| 110 | */ |
Nico Huber | 260c33b | 2013-07-18 11:27:30 +0200 | [diff] [blame] | 111 | static void it8516e_set_fan_temperature(const u8 idx, const u16 temp) |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 112 | { |
| 113 | if (send_ec_command(IT8516E_CMD_SET_FAN_TEMP)) |
| 114 | return; |
| 115 | if (send_ec_data(idx)) |
| 116 | return; |
Nico Huber | 260c33b | 2013-07-18 11:27:30 +0200 | [diff] [blame] | 117 | if (send_ec_data(temp & 0xff)) |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 118 | return; |
Nico Huber | 260c33b | 2013-07-18 11:27:30 +0200 | [diff] [blame] | 119 | send_ec_data(temp >> 8); |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 120 | } |
| 121 | |
Nico Huber | 1f9f678 | 2013-07-18 11:50:59 +0200 | [diff] [blame^] | 122 | /** |
| 123 | * Sets the minimum and maximum PWM rate of a fan in IT8516E_MODE_THERMAL |
| 124 | * |
| 125 | * @param idx Selects the fan; 0: CPU, 1: System |
| 126 | * @param min Minimum PWM rate in % |
| 127 | * @param max Maximum PWM rate in % |
| 128 | */ |
Nico Huber | 9ce71b3 | 2013-07-12 14:43:11 +0200 | [diff] [blame] | 129 | static void it8516e_set_fan_limits(const u8 idx, const u8 min, const u8 max) |
| 130 | { |
| 131 | if (send_ec_command(IT8516E_CMD_SET_FAN_LIMITS)) |
| 132 | return; |
| 133 | if (send_ec_data(idx)) |
| 134 | return; |
| 135 | if (send_ec_data(min)) |
| 136 | return; |
| 137 | send_ec_data(max); |
| 138 | } |
| 139 | |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 140 | static void it8516e_set_fan_from_options(const config_t *const config, |
| 141 | const u8 fan_idx) |
| 142 | { |
| 143 | static char fanX_mode[] = "fanX_mode"; |
| 144 | static char fanX_target[] = "fanX_target"; |
Nico Huber | 9ce71b3 | 2013-07-12 14:43:11 +0200 | [diff] [blame] | 145 | static char fanX_min[] = "fanX_min"; |
| 146 | static char fanX_max[] = "fanX_max"; |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 147 | |
Nico Huber | 9ce71b3 | 2013-07-12 14:43:11 +0200 | [diff] [blame] | 148 | u8 fan_mode = config->default_fan_mode[fan_idx]; |
| 149 | u16 fan_target = config->default_fan_target[fan_idx]; |
| 150 | u8 fan_min = config->default_fan_min[fan_idx]; |
| 151 | u8 fan_max = config->default_fan_max[fan_idx]; |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 152 | |
| 153 | fanX_mode[3] = '1' + fan_idx; |
| 154 | get_option(&fan_mode, fanX_mode); |
| 155 | if (!fan_mode) |
| 156 | fan_mode = IT8516E_MODE_AUTO; |
| 157 | it8516e_set_fan_mode(fan_idx, fan_mode); |
| 158 | |
| 159 | fanX_target[3] = '1' + fan_idx; |
| 160 | get_option(&fan_target, fanX_target); |
| 161 | switch (fan_mode) { |
| 162 | case IT8516E_MODE_AUTO: |
| 163 | printk(BIOS_DEBUG, |
| 164 | "Setting it8516e fan%d " |
| 165 | "control to auto.\n", |
| 166 | fan_idx + 1); |
| 167 | break; |
| 168 | case IT8516E_MODE_PWM: |
| 169 | printk(BIOS_DEBUG, |
| 170 | "Setting it8516e fan%d " |
| 171 | "control to %d%% PWM.\n", |
| 172 | fan_idx + 1, fan_target); |
Nico Huber | 942b6c2 | 2013-07-12 14:40:23 +0200 | [diff] [blame] | 173 | it8516e_set_fan_pwm(fan_idx, (fan_target * 255) / 100); |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 174 | break; |
| 175 | case IT8516E_MODE_SPEED: |
| 176 | printk(BIOS_DEBUG, |
| 177 | "Setting it8516e fan%d " |
| 178 | "control to %d RPMs.\n", |
| 179 | fan_idx + 1, fan_target); |
| 180 | it8516e_set_fan_speed(fan_idx, fan_target); |
| 181 | break; |
| 182 | case IT8516E_MODE_THERMAL: |
| 183 | printk(BIOS_DEBUG, |
Nico Huber | 9ce71b3 | 2013-07-12 14:43:11 +0200 | [diff] [blame] | 184 | "Setting it8516e fan%d control to %d C.\n", |
Nico Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 185 | fan_idx + 1, fan_target); |
Nico Huber | 260c33b | 2013-07-18 11:27:30 +0200 | [diff] [blame] | 186 | it8516e_set_fan_temperature(fan_idx, fan_target * 64); |
Nico Huber | 9ce71b3 | 2013-07-12 14:43:11 +0200 | [diff] [blame] | 187 | |
| 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 Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 206 | break; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | static void it8516e_pm2_init(const device_t dev) |
| 211 | { |
| 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 Huber | 6d6a2ac | 2013-07-12 14:35:00 +0200 | [diff] [blame] | 219 | 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 Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 225 | it8516e_set_fan_from_options(config, 0); |
| 226 | it8516e_set_fan_from_options(config, 1); |
| 227 | } |
| 228 | |
| 229 | static struct device_operations it8516e_pm2_ops = { |
Nico Huber | 9cb0941 | 2013-06-15 15:30:19 +0200 | [diff] [blame] | 230 | .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 Huber | a53266b | 2013-05-02 15:26:08 +0200 | [diff] [blame] | 235 | }; |
| 236 | |
| 237 | static struct pnp_info it8516e_dev_infos[] = { |
| 238 | { 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, { 0xff7e0, }, }, |
| 241 | { NULL, IT8516E_LDN_MOUSE, PNP_IRQ0, }, |
| 242 | { 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, }, }, |
| 248 | }; |
| 249 | |
| 250 | static void it8516e_enable(const device_t dev) |
| 251 | { |
| 252 | pnp_enable_devices(dev, &pnp_ops, |
| 253 | ARRAY_SIZE(it8516e_dev_infos), it8516e_dev_infos); |
| 254 | } |
| 255 | |
| 256 | const struct chip_operations ec_kontron_it8516e_ops = { |
| 257 | CHIP_NAME("Kontron (Fintec/ITE) IT8516E EC") |
| 258 | .enable_dev = it8516e_enable |
| 259 | }; |