mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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41cde66516
The fans on samus have a recommended minimum duty cycle of 20% while running, but 30% in order to start. We've been using the EC's built-in fan controller for the start requirement, but it has a minimum fast-start duty cycle of 50%. It turns out that that speed is noticeably noisy. This change handles the startup with logic in the EC instead, so that the fan only tries to spin at 30% initially (or if it drops too much below the minimum turning speed). BUG=chrome-os-partner:33429 BRANCH=ToT,samus TEST=make buildall -j Boot the system, let it idle with the browser windows closed, the browse a bit, then idle. Listen for changes to the fans. Before, I could hear the fans kick in and out as the AP load changed. Now it's much quieter. Change-Id: Id35215520c064eb6843686ec8bb5f3618dac6cf6 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/227658 Reviewed-by: Randall Spangler <rspangler@chromium.org>
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* EC for Auron board configuration */
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#include "adc.h"
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#include "adc_chip.h"
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#include "backlight.h"
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#include "chipset.h"
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#include "common.h"
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#include "driver/temp_sensor/g781.h"
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#include "extpower.h"
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#include "fan.h"
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#include "gpio.h"
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#include "host_command.h"
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#include "i2c.h"
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#include "jtag.h"
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#include "keyboard_scan.h"
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#include "lid_switch.h"
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#include "peci.h"
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#include "power.h"
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#include "power_button.h"
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#include "registers.h"
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#include "switch.h"
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#include "temp_sensor.h"
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#include "temp_sensor_chip.h"
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#include "thermal.h"
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#include "timer.h"
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#include "uart.h"
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#include "util.h"
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#include "gpio_list.h"
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/* power signal list. Must match order of enum power_signal. */
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const struct power_signal_info power_signal_list[] = {
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{GPIO_PP5000_PGOOD, 1, "PGOOD_PP5000"},
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{GPIO_PP1350_PGOOD, 1, "PGOOD_PP1350"},
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{GPIO_PP1050_PGOOD, 1, "PGOOD_PP1050"},
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{GPIO_VCORE_PGOOD, 1, "PGOOD_VCORE"},
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{GPIO_PCH_SLP_S0_L, 1, "SLP_S0#_DEASSERTED"},
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{GPIO_PCH_SLP_S3_L, 1, "SLP_S3#_DEASSERTED"},
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{GPIO_PCH_SLP_S5_L, 1, "SLP_S5#_DEASSERTED"},
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{GPIO_PCH_SLP_SUS_L, 1, "SLP_SUS#_DEASSERTED"},
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};
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BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT);
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/* ADC channels. Must be in the exactly same order as in enum adc_channel. */
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const struct adc_t adc_channels[] = {
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/* EC internal temperature is calculated by
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* 273 + (295 - 450 * ADC_VALUE / ADC_READ_MAX) / 2
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* = -225 * ADC_VALUE / ADC_READ_MAX + 420.5
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*/
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{"ECTemp", LM4_ADC_SEQ0, -225, ADC_READ_MAX, 420,
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LM4_AIN_NONE, 0x0e /* TS0 | IE0 | END0 */, 0, 0},
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/* IOUT == ICMNT is on PE3/AIN0 */
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/* We have 0.01-ohm resistors, and IOUT is 20X the differential
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* voltage, so 1000mA ==> 200mV.
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* ADC returns 0x000-0xFFF, which maps to 0.0-3.3V (as configured).
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* mA = 1000 * ADC_VALUE / ADC_READ_MAX * 3300 / 200
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*/
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{"ChargerCurrent", LM4_ADC_SEQ1, 33000, ADC_READ_MAX * 2, 0,
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LM4_AIN(0), 0x06 /* IE0 | END0 */, LM4_GPIO_E, (1<<3)},
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};
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BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
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/* Physical fans. These are logically separate from pwm_channels. */
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const struct fan_t fans[] = {
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{.flags = FAN_USE_RPM_MODE,
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.rpm_min = 1000,
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.rpm_start = 1000,
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.rpm_max = 5050,
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.ch = 2,
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.pgood_gpio = GPIO_PP5000_PGOOD,
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.enable_gpio = GPIO_PP5000_FAN_EN,
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},
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};
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BUILD_ASSERT(ARRAY_SIZE(fans) == CONFIG_FANS);
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/* I2C ports */
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const struct i2c_port_t i2c_ports[] = {
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{"batt_chg", 0, 100},
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{"thermal", 5, 100},
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};
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const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
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/* Temperature sensors data; must be in same order as enum temp_sensor_id. */
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const struct temp_sensor_t temp_sensors[] = {
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{"PECI", TEMP_SENSOR_TYPE_CPU, peci_temp_sensor_get_val, 0, 2},
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{"ECInternal", TEMP_SENSOR_TYPE_BOARD, chip_temp_sensor_get_val, 0, 4},
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{"G781Internal", TEMP_SENSOR_TYPE_BOARD, g781_get_val,
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G781_IDX_INTERNAL, 4},
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{"G781External", TEMP_SENSOR_TYPE_BOARD, g781_get_val,
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G781_IDX_EXTERNAL, 4},
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};
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BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
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/* Thermal limits for each temp sensor. All temps are in degrees K. Must be in
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* same order as enum temp_sensor_id. To always ignore any temp, use 0.
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*/
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struct ec_thermal_config thermal_params[] = {
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/* Only the AP affects the thermal limits and fan speed. */
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{{C_TO_K(95), C_TO_K(97), C_TO_K(99)}, C_TO_K(55), C_TO_K(85)},
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{{0, 0, 0}, 0, 0},
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{{0, 0, 0}, 0, 0},
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{{0, 0, 0}, 0, 0},
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};
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BUILD_ASSERT(ARRAY_SIZE(thermal_params) == TEMP_SENSOR_COUNT);
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struct keyboard_scan_config keyscan_config = {
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.output_settle_us = 40,
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.debounce_down_us = 6 * MSEC,
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.debounce_up_us = 30 * MSEC,
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.scan_period_us = 1500,
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.min_post_scan_delay_us = 1000,
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.poll_timeout_us = SECOND,
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.actual_key_mask = {
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0x14, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xff,
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0xa4, 0xff, 0xf6, 0x55, 0xfa, 0xca /* full set */
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},
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};
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/**
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* Discharge battery when on AC power for factory test.
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*/
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int board_discharge_on_ac(int enable)
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{
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if (enable)
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gpio_set_level(GPIO_CHARGE_L, 1);
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else
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gpio_set_level(GPIO_CHARGE_L, 0);
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return EC_SUCCESS;
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}
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