Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. |
| 5 | * Copyright (C) 2016 secunet Security Networks AG |
Krystian Hebel | 97445f2 | 2019-02-26 11:19:58 +0100 | [diff] [blame] | 6 | * Copyright (C) 2019 Protectli |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <arch/io.h> |
| 21 | #include <console/console.h> |
| 22 | #include <delay.h> |
| 23 | |
| 24 | #include "env_ctrl.h" |
| 25 | #include "env_ctrl_chip.h" |
| 26 | |
| 27 | static inline u8 ite_ec_read(const u16 base, const u8 addr) |
| 28 | { |
| 29 | outb(addr, base + 5); |
| 30 | return inb(base + 6); |
| 31 | } |
| 32 | |
| 33 | static inline void ite_ec_write(const u16 base, const u8 addr, const u8 value) |
| 34 | { |
| 35 | outb(addr, base + 5); |
| 36 | outb(value, base + 6); |
| 37 | } |
| 38 | |
| 39 | static void extemp_force_idle_status(const u16 base) |
| 40 | { |
| 41 | u8 reg; |
| 42 | int retries = 10; |
| 43 | |
| 44 | /* Wait up to 10ms for non-busy state. */ |
| 45 | while (retries > 0) { |
| 46 | reg = ite_ec_read(base, ITE_EC_EXTEMP_STATUS); |
| 47 | |
| 48 | if ((reg & ITE_EC_EXTEMP_STATUS_HOST_BUSY) == 0x0) |
| 49 | break; |
| 50 | |
| 51 | retries--; |
| 52 | |
| 53 | mdelay(1); |
| 54 | } |
| 55 | |
| 56 | if (retries == 0 && (reg & ITE_EC_EXTEMP_STATUS_HOST_BUSY) == 0x1) { |
| 57 | /* |
| 58 | * SIO is busy due to unfinished peci transaction. |
| 59 | * Re-configure Register 0x8E to terminate processes. |
| 60 | */ |
| 61 | ite_ec_write(base, ITE_EC_EXTEMP_CONTROL, |
| 62 | ITE_EC_EXTEMP_CTRL_AUTO_4HZ | |
| 63 | ITE_EC_EXTEMP_CTRL_AUTO_START); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | /* |
Vagiz Trakhanov | 177f773 | 2017-10-17 18:04:55 +0000 | [diff] [blame] | 68 | * Setup PECI interface |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 69 | */ |
Vagiz Trakhanov | 177f773 | 2017-10-17 18:04:55 +0000 | [diff] [blame] | 70 | static void enable_peci(const u16 base) |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 71 | { |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 72 | /* Enable PECI interface */ |
| 73 | ite_ec_write(base, ITE_EC_INTERFACE_SELECT, |
| 74 | ITE_EC_INTERFACE_SEL_PECI | |
| 75 | ITE_EC_INTERFACE_SPEED_TOLERANCE); |
| 76 | |
| 77 | /* Setup External Temperature using PECI GetTemp */ |
| 78 | ite_ec_write(base, ITE_EC_EXTEMP_ADDRESS, |
| 79 | PECI_CLIENT_ADDRESS); |
| 80 | ite_ec_write(base, ITE_EC_EXTEMP_COMMAND, |
| 81 | PECI_GETTEMP_COMMAND); |
| 82 | ite_ec_write(base, ITE_EC_EXTEMP_WRITE_LENGTH, |
| 83 | PECI_GETTEMP_WRITE_LENGTH); |
| 84 | ite_ec_write(base, ITE_EC_EXTEMP_READ_LENGTH, |
| 85 | PECI_GETTEMP_READ_LENGTH); |
| 86 | ite_ec_write(base, ITE_EC_EXTEMP_CONTROL, |
| 87 | ITE_EC_EXTEMP_CTRL_AUTO_4HZ | |
| 88 | ITE_EC_EXTEMP_CTRL_AUTO_START); |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /* |
Vagiz Trakhanov | 177f773 | 2017-10-17 18:04:55 +0000 | [diff] [blame] | 92 | * Set up External Temperature to read via PECI or thermal diode/resistor |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 93 | * into TMPINx register |
| 94 | */ |
Samuel Holland | 901bdb3 | 2017-06-06 20:40:27 -0500 | [diff] [blame] | 95 | static void enable_tmpin(const u16 base, const u8 tmpin, |
Vagiz Trakhanov | 17c5771 | 2017-09-28 14:21:54 +0000 | [diff] [blame] | 96 | const struct ite_ec_thermal_config *const conf) |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 97 | { |
| 98 | u8 reg; |
| 99 | |
| 100 | reg = ite_ec_read(base, ITE_EC_ADC_TEMP_CHANNEL_ENABLE); |
| 101 | |
Vagiz Trakhanov | 17c5771 | 2017-09-28 14:21:54 +0000 | [diff] [blame] | 102 | switch (conf->mode) { |
Vagiz Trakhanov | 177f773 | 2017-10-17 18:04:55 +0000 | [diff] [blame] | 103 | case THERMAL_PECI: |
| 104 | if (reg & ITE_EC_ADC_TEMP_EXT_REPORTS_TO_MASK) { |
| 105 | printk(BIOS_WARNING, "PECI specified for multiple TMPIN\n"); |
| 106 | return; |
| 107 | } |
| 108 | enable_peci(base); |
| 109 | reg |= ITE_EC_ADC_TEMP_EXT_REPORTS_TO(tmpin); |
| 110 | break; |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 111 | case THERMAL_DIODE: |
| 112 | reg |= ITE_EC_ADC_TEMP_DIODE_MODE(tmpin); |
| 113 | break; |
| 114 | case THERMAL_RESISTOR: |
| 115 | reg |= ITE_EC_ADC_TEMP_RESISTOR_MODE(tmpin); |
| 116 | break; |
| 117 | default: |
| 118 | printk(BIOS_WARNING, |
| 119 | "Unsupported thermal mode 0x%x on TMPIN%d\n", |
Vagiz Trakhanov | 17c5771 | 2017-09-28 14:21:54 +0000 | [diff] [blame] | 120 | conf->mode, tmpin); |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 121 | return; |
| 122 | } |
| 123 | |
| 124 | ite_ec_write(base, ITE_EC_ADC_TEMP_CHANNEL_ENABLE, reg); |
| 125 | |
Vagiz Trakhanov | 17c5771 | 2017-09-28 14:21:54 +0000 | [diff] [blame] | 126 | /* Set temperature offsets */ |
| 127 | if (conf->mode != THERMAL_RESISTOR) { |
| 128 | reg = ite_ec_read(base, ITE_EC_BEEP_ENABLE); |
| 129 | reg |= ITE_EC_TEMP_ADJUST_WRITE_ENABLE; |
| 130 | ite_ec_write(base, ITE_EC_BEEP_ENABLE, reg); |
| 131 | ite_ec_write(base, ITE_EC_TEMP_ADJUST[tmpin-1], conf->offset); |
| 132 | } |
| 133 | |
Vagiz Trakhanov | cc9c0cb | 2017-09-28 14:25:59 +0000 | [diff] [blame] | 134 | /* Set temperature limits */ |
| 135 | u8 max = conf->max; |
| 136 | ite_ec_write(base, ITE_EC_HIGH_TEMP_LIMIT(tmpin), |
| 137 | max ? max : 127); |
| 138 | ite_ec_write(base, ITE_EC_LOW_TEMP_LIMIT(tmpin), conf->min); |
| 139 | |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 140 | /* Enable the startup of monitoring operation */ |
| 141 | reg = ite_ec_read(base, ITE_EC_CONFIGURATION); |
| 142 | reg |= ITE_EC_CONFIGURATION_START; |
| 143 | ite_ec_write(base, ITE_EC_CONFIGURATION, reg); |
| 144 | } |
| 145 | |
| 146 | static void fan_smartconfig(const u16 base, const u8 fan, |
| 147 | const enum ite_ec_fan_mode mode, |
| 148 | const struct ite_ec_fan_smartconfig *const conf) |
| 149 | { |
| 150 | u8 pwm_ctrl; |
| 151 | u8 pwm_start = 0; |
| 152 | u8 pwm_auto = 0; |
| 153 | |
| 154 | if (mode == FAN_SMART_SOFTWARE) { |
| 155 | pwm_ctrl = ITE_EC_FAN_CTL_PWM_MODE_SOFTWARE; |
| 156 | |
| 157 | /* 50% duty cycle by default */ |
| 158 | const u8 duty = conf->pwm_start ? conf->pwm_start : 50; |
| 159 | if (IS_ENABLED(CONFIG_SUPERIO_ITE_ENV_CTRL_8BIT_PWM)) |
| 160 | pwm_start = ITE_EC_FAN_CTL_PWM_DUTY(duty); |
| 161 | else |
| 162 | pwm_ctrl |= ITE_EC_FAN_CTL_PWM_DUTY(duty); |
| 163 | } else { |
| 164 | pwm_ctrl = ITE_EC_FAN_CTL_PWM_MODE_AUTOMATIC; |
| 165 | pwm_ctrl |= ITE_EC_FAN_CTL_TEMPIN(conf->tmpin); |
| 166 | |
| 167 | pwm_start = ITE_EC_FAN_CTL_PWM_START_DUTY(conf->pwm_start); |
| 168 | pwm_start |= ITE_EC_FAN_CTL_PWM_SLOPE_BIT6(conf->slope); |
| 169 | |
| 170 | pwm_auto = ITE_EC_FAN_CTL_PWM_SLOPE_LOWER(conf->slope); |
Arthur Heymans | e68947d | 2016-11-26 14:43:18 +0100 | [diff] [blame] | 171 | if (conf->smoothing) |
| 172 | pwm_auto |= ITE_EC_FAN_CTL_AUTO_SMOOTHING_EN; |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 173 | |
| 174 | ite_ec_write(base, ITE_EC_FAN_CTL_TEMP_LIMIT_OFF(fan), |
| 175 | conf->tmp_off); |
| 176 | ite_ec_write(base, ITE_EC_FAN_CTL_TEMP_LIMIT_START(fan), |
| 177 | conf->tmp_start); |
| 178 | /* Full speed above 127°C by default */ |
| 179 | ite_ec_write(base, ITE_EC_FAN_CTL_TEMP_LIMIT_FULL(fan), |
| 180 | conf->tmp_full ? conf->tmp_full : 127); |
| 181 | ite_ec_write(base, ITE_EC_FAN_CTL_DELTA_TEMP(fan), |
| 182 | ITE_EC_FAN_CTL_DELTA_TEMP_INTRVL(conf->tmp_delta)); |
| 183 | } |
| 184 | |
| 185 | ite_ec_write(base, ITE_EC_FAN_CTL_PWM_CONTROL(fan), pwm_ctrl); |
| 186 | ite_ec_write(base, ITE_EC_FAN_CTL_PWM_START(fan), pwm_start); |
| 187 | ite_ec_write(base, ITE_EC_FAN_CTL_PWM_AUTO(fan), pwm_auto); |
| 188 | } |
| 189 | |
| 190 | static void enable_fan(const u16 base, const u8 fan, |
| 191 | const struct ite_ec_fan_config *const conf) |
| 192 | { |
| 193 | u8 reg; |
| 194 | |
Krystian Hebel | 97445f2 | 2019-02-26 11:19:58 +0100 | [diff] [blame] | 195 | if (conf->mode == FAN_IGNORE || |
| 196 | (IS_ENABLED(CONFIG_SUPERIO_ITE_ENV_CTRL_NO_ONOFF) && |
| 197 | conf->mode <= FAN_MODE_OFF)) |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 198 | return; |
| 199 | |
| 200 | /* FAN_CTL2 might have its own frequency setting */ |
| 201 | if (IS_ENABLED(CONFIG_SUPERIO_ITE_ENV_CTRL_PWM_FREQ2) && fan == 2) { |
| 202 | reg = ite_ec_read(base, ITE_EC_ADC_TEMP_EXTRA_CHANNEL_ENABLE); |
| 203 | reg &= ~ITE_EC_FAN_PWM_CLOCK_MASK; |
| 204 | reg |= ITE_EC_FAN_PWM_DEFAULT_CLOCK; |
| 205 | ite_ec_write(base, ITE_EC_ADC_TEMP_EXTRA_CHANNEL_ENABLE, reg); |
| 206 | } |
| 207 | |
| 208 | if (conf->mode >= FAN_SMART_SOFTWARE) { |
| 209 | fan_smartconfig(base, fan, conf->mode, &conf->smart); |
| 210 | } else { |
| 211 | reg = ite_ec_read(base, ITE_EC_FAN_CTL_MODE); |
| 212 | if (conf->mode == FAN_MODE_ON) |
| 213 | reg |= ITE_EC_FAN_CTL_ON(fan); |
| 214 | else |
| 215 | reg &= ~ITE_EC_FAN_CTL_ON(fan); |
| 216 | ite_ec_write(base, ITE_EC_FAN_CTL_MODE, reg); |
| 217 | } |
| 218 | |
Krystian Hebel | 65b514c | 2019-03-01 11:27:22 +0100 | [diff] [blame] | 219 | if (IS_ENABLED(CONFIG_SUPERIO_ITE_ENV_CTRL_FAN16_CONFIG) |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 220 | && conf->mode >= FAN_MODE_ON) { |
| 221 | reg = ite_ec_read(base, ITE_EC_FAN_TAC_COUNTER_ENABLE); |
| 222 | reg |= ITE_EC_FAN_TAC_16BIT_ENABLE(fan); |
| 223 | ite_ec_write(base, ITE_EC_FAN_TAC_COUNTER_ENABLE, reg); |
| 224 | } |
| 225 | |
Krystian Hebel | 97445f2 | 2019-02-26 11:19:58 +0100 | [diff] [blame] | 226 | if (IS_ENABLED(CONFIG_SUPERIO_ITE_ENV_CTRL_5FANS) && fan > 3) { |
| 227 | reg = ite_ec_read(base, ITE_EC_FAN_SEC_CTL); |
| 228 | if (conf->mode >= FAN_MODE_ON) |
| 229 | reg |= ITE_EC_FAN_SEC_CTL_TAC_EN(fan); |
| 230 | else |
| 231 | reg &= ~ITE_EC_FAN_SEC_CTL_TAC_EN(fan); |
| 232 | ite_ec_write(base, ITE_EC_FAN_SEC_CTL, reg); |
| 233 | } else { |
| 234 | reg = ite_ec_read(base, ITE_EC_FAN_MAIN_CTL); |
| 235 | if (conf->mode >= FAN_MODE_ON) |
| 236 | reg |= ITE_EC_FAN_MAIN_CTL_TAC_EN(fan); |
| 237 | else |
| 238 | reg &= ~ITE_EC_FAN_MAIN_CTL_TAC_EN(fan); |
| 239 | |
| 240 | /* Some ITEs have SmartGuardian always enabled */ |
| 241 | if (!IS_ENABLED(CONFIG_SUPERIO_ITE_ENV_CTRL_NO_ONOFF)) { |
| 242 | if (conf->mode >= FAN_SMART_SOFTWARE) |
| 243 | reg |= ITE_EC_FAN_MAIN_CTL_SMART(fan); |
| 244 | else |
| 245 | reg &= ~ITE_EC_FAN_MAIN_CTL_SMART(fan); |
| 246 | } |
| 247 | ite_ec_write(base, ITE_EC_FAN_MAIN_CTL, reg); |
| 248 | } |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 249 | } |
| 250 | |
Vagiz Trakhanov | 41aa5ec | 2017-10-23 13:17:44 +0000 | [diff] [blame] | 251 | static void enable_beeps(const u16 base, const struct ite_ec_config *const conf) |
| 252 | { |
| 253 | u8 reg = 0; |
| 254 | u8 freq = ITE_EC_BEEP_TONE_DIVISOR(10) | ITE_EC_BEEP_FREQ_DIVISOR(10); |
| 255 | |
| 256 | if (conf->tmpin_beep) { |
| 257 | reg |= ITE_EC_BEEP_ON_TMP_LIMIT; |
| 258 | ite_ec_write(base, ITE_EC_BEEP_FREQ_DIV_OF_TMPIN, freq); |
| 259 | } |
| 260 | if (conf->fan_beep) { |
| 261 | reg |= ITE_EC_BEEP_ON_FAN_LIMIT; |
| 262 | ite_ec_write(base, ITE_EC_BEEP_FREQ_DIV_OF_FAN, freq); |
| 263 | } |
| 264 | if (conf->vin_beep) { |
| 265 | reg |= ITE_EC_BEEP_ON_VIN_LIMIT; |
| 266 | ite_ec_write(base, ITE_EC_BEEP_FREQ_DIV_OF_VIN, freq); |
| 267 | } |
| 268 | |
| 269 | if (reg) { |
| 270 | reg |= ite_ec_read(base, ITE_EC_BEEP_ENABLE); |
| 271 | ite_ec_write(base, ITE_EC_BEEP_ENABLE, reg); |
| 272 | } |
| 273 | } |
| 274 | |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 275 | void ite_ec_init(const u16 base, const struct ite_ec_config *const conf) |
| 276 | { |
| 277 | size_t i; |
| 278 | |
| 279 | /* Configure 23.43kHz PWM active high output */ |
| 280 | u8 fan_ctl = ite_ec_read(base, ITE_EC_FAN_CTL_MODE); |
| 281 | fan_ctl &= ~ITE_EC_FAN_PWM_CLOCK_MASK; |
| 282 | fan_ctl |= ITE_EC_FAN_PWM_DEFAULT_CLOCK; |
| 283 | fan_ctl |= ITE_EC_FAN_CTL_POLARITY_HIGH; |
| 284 | ite_ec_write(base, ITE_EC_FAN_CTL_MODE, fan_ctl); |
| 285 | |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 286 | /* Enable HWM if configured */ |
| 287 | for (i = 0; i < ITE_EC_TMPIN_CNT; ++i) |
Vagiz Trakhanov | 17c5771 | 2017-09-28 14:21:54 +0000 | [diff] [blame] | 288 | enable_tmpin(base, i + 1, &conf->tmpin[i]); |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 289 | |
| 290 | /* Enable reading of voltage pins */ |
| 291 | ite_ec_write(base, ITE_EC_ADC_VOLTAGE_CHANNEL_ENABLE, conf->vin_mask); |
| 292 | |
| 293 | /* Enable FANx if configured */ |
| 294 | for (i = 0; i < ITE_EC_FAN_CNT; ++i) |
| 295 | enable_fan(base, i + 1, &conf->fan[i]); |
| 296 | |
Vagiz Trakhanov | 41aa5ec | 2017-10-23 13:17:44 +0000 | [diff] [blame] | 297 | /* Enable beeps if configured */ |
| 298 | enable_beeps(base, conf); |
| 299 | |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 300 | /* |
| 301 | * System may get wrong temperature data when SIO is in |
| 302 | * busy state. Therefore, check the status and terminate |
| 303 | * processes if needed. |
| 304 | */ |
Vagiz Trakhanov | 177f773 | 2017-10-17 18:04:55 +0000 | [diff] [blame] | 305 | for (i = 0; i < ITE_EC_TMPIN_CNT; ++i) |
| 306 | if (conf->tmpin[i].mode == THERMAL_PECI) |
| 307 | extemp_force_idle_status(base); |
Nico Huber | e34e178 | 2016-09-29 12:33:01 +0200 | [diff] [blame] | 308 | } |