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/* Copyright 2020 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "common.h"
#include "console.h"
#include "driver/retimer/ps8811.h"
#include "fan.h"
#include "fan_chip.h"
#include "gpio.h"
#include "hooks.h"
#include "i2c.h"
#include "ioexpander.h"
#include "timer.h"
#define CPRINTSUSB(format, args...) cprints(CC_USBCHARGE, format, ## args)
#define CPRINTFUSB(format, args...) cprintf(CC_USBCHARGE, format, ## args)
/*****************************************************************************
* Fan
*/
/* Physical fans. These are logically separate from pwm_channels. */
const struct fan_conf fan_conf_0 = {
.flags = FAN_USE_RPM_MODE,
.ch = MFT_CH_0, /* Use MFT id to control fan */
.pgood_gpio = -1,
.enable_gpio = -1,
};
const struct fan_rpm fan_rpm_0 = {
.rpm_min = 3100,
.rpm_start = 3100,
.rpm_max = 6900,
};
const struct fan_t fans[] = {
[FAN_CH_0] = {
.conf = &fan_conf_0,
.rpm = &fan_rpm_0,
},
};
BUILD_ASSERT(ARRAY_SIZE(fans) == FAN_CH_COUNT);
const static struct ec_thermal_config thermal_thermistor = {
.temp_host = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(75),
[EC_TEMP_THRESH_HALT] = C_TO_K(80),
},
.temp_host_release = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(65),
},
.temp_fan_off = C_TO_K(25),
.temp_fan_max = C_TO_K(50),
};
const static struct ec_thermal_config thermal_cpu = {
.temp_host = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(85),
[EC_TEMP_THRESH_HALT] = C_TO_K(95),
},
.temp_host_release = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(65),
},
.temp_fan_off = C_TO_K(25),
.temp_fan_max = C_TO_K(50),
};
struct ec_thermal_config thermal_params[TEMP_SENSOR_COUNT];
static void setup_fans(void)
{
thermal_params[TEMP_SENSOR_CHARGER] = thermal_thermistor;
thermal_params[TEMP_SENSOR_SOC] = thermal_thermistor;
thermal_params[TEMP_SENSOR_CPU] = thermal_cpu;
}
DECLARE_HOOK(HOOK_INIT, setup_fans, HOOK_PRIO_DEFAULT);
/*****************************************************************************
* USB-A Retimer tuning
*/
#define PS8811_ACCESS_RETRIES 2
/* PS8811 gain tuning */
static void ps8811_tuning_init(void)
{
int rv;
int retry;
/* Turn on the retimers */
ioex_set_level(IOEX_USB_A0_RETIMER_EN, 1);
ioex_set_level(IOEX_USB_A1_RETIMER_EN, 1);
/* USB-A0 can run with default settings */
for (retry = 0; retry < PS8811_ACCESS_RETRIES; ++retry) {
int val;
rv = i2c_read8(I2C_PORT_USBA0,
PS8811_I2C_ADDR_FLAGS + PS8811_REG_PAGE1,
PS8811_REG1_USB_BEQ_LEVEL, &val);
if (!rv)
break;
}
if (rv) {
ioex_set_level(IOEX_USB_A0_RETIMER_EN, 0);
CPRINTSUSB("C0: PS8811 not detected");
}
/* USB-A1 needs to increase gain to get over MB/DB connector */
for (retry = 0; retry < PS8811_ACCESS_RETRIES; ++retry) {
rv = i2c_write8(I2C_PORT_USBA1,
PS8811_I2C_ADDR_FLAGS + PS8811_REG_PAGE1,
PS8811_REG1_USB_BEQ_LEVEL,
PS8811_BEQ_I2C_LEVEL_UP_13DB |
PS8811_BEQ_PIN_LEVEL_UP_18DB);
if (!rv)
break;
}
if (rv) {
ioex_set_level(IOEX_USB_A1_RETIMER_EN, 0);
CPRINTSUSB("C1: PS8811 not detected");
}
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, ps8811_tuning_init, HOOK_PRIO_DEFAULT);
static void ps8811_retimer_off(void)
{
/* Turn on the retimers */
ioex_set_level(IOEX_USB_A0_RETIMER_EN, 0);
ioex_set_level(IOEX_USB_A1_RETIMER_EN, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, ps8811_retimer_off, HOOK_PRIO_DEFAULT);
/*****************************************************************************
* MST hub
*/
static void mst_hpd_handler(void)
{
int hpd = 0;
/* Pass HPD through from DB OPT3 MST hub to AP's DP1. */
ioex_get_level(IOEX_MST_HPD_OUT, &hpd);
gpio_set_level(GPIO_DP1_HPD, hpd);
ccprints("MST HPD %d", hpd);
}
DECLARE_DEFERRED(mst_hpd_handler);
void mst_hpd_interrupt(enum ioex_signal signal)
{
/* Debounce for 2 msec. */
hook_call_deferred(&mst_hpd_handler_data, (2 * MSEC));
}
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