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chrome-ec/board/chell/board.c

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/* Copyright 2015 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.
*/
/* Chell board-specific configuration */
#include "adc_chip.h"
#include "bd99992gw.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "charger.h"
#include "chipset.h"
#include "console.h"
#include "extpower.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "i2c.h"
#include "keyboard_scan.h"
#include "lid_switch.h"
#include "pi3usb9281.h"
#include "power.h"
#include "power_button.h"
#include "pwm.h"
#include "pwm_chip.h"
#include "spi.h"
#include "switch.h"
#include "system.h"
#include "task.h"
#include "tcpci.h"
#include "temp_sensor.h"
#include "timer.h"
#include "uart.h"
#include "usb_charge.h"
#include "usb_mux.h"
#include "usb_mux/ps874x.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#include "util.h"
#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
#define I2C_ADDR_BD99992_FLAGS 0x30
/* Exchange status with PD MCU. */
static void pd_mcu_interrupt(enum gpio_signal signal)
{
#ifdef HAS_TASK_PDCMD
/* Exchange status with PD MCU to determine interrupt cause */
host_command_pd_send_status(0);
#endif
}
void vbus0_evt(enum gpio_signal signal)
{
/* VBUS present GPIO is inverted */
usb_charger_vbus_change(0, !gpio_get_level(signal));
task_wake(TASK_ID_PD_C0);
}
void vbus1_evt(enum gpio_signal signal)
{
/* VBUS present GPIO is inverted */
usb_charger_vbus_change(1, !gpio_get_level(signal));
task_wake(TASK_ID_PD_C1);
}
void usb0_evt(enum gpio_signal signal)
{
task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12, 0);
}
void usb1_evt(enum gpio_signal signal)
{
task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12, 0);
}
#include "gpio_list.h"
/* ADC channels */
const struct adc_t adc_channels[] = {
/* Vbus sensing. Converted to mV, full ADC is equivalent to 30V. */
[ADC_VBUS] = {"VBUS", 30000, 1024, 0, 1},
/* Adapter current output or battery discharging current */
[ADC_AMON_BMON] = {"AMON_BMON", 25000, 3072, 0, 3},
/* System current consumption */
[ADC_PSYS] = {"PSYS", 1, 1, 0, 4},
};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
const struct pwm_t pwm_channels[] = {
/* Use alternate 100kHz clock source, keep active in low-power idle */
{2, PWM_CONFIG_ALT_CLOCK | PWM_CONFIG_DSLEEP},
};
BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
const struct i2c_port_t i2c_ports[] = {
{"pmic", MEC1322_I2C0_0, 400, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA},
{"muxes", MEC1322_I2C0_1, 400, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA},
{"pd_mcu", MEC1322_I2C1, 500, GPIO_I2C1_SCL, GPIO_I2C1_SDA},
{"batt", MEC1322_I2C3, 100, GPIO_I2C3_SCL, GPIO_I2C3_SDA},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_COUNT] = {
{
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC,
.addr_flags = CONFIG_TCPC_I2C_BASE_ADDR_FLAGS,
},
.drv = &tcpci_tcpm_drv,
},
{
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC,
.addr_flags = CONFIG_TCPC_I2C_BASE_ADDR_FLAGS + 1,
},
.drv = &tcpci_tcpm_drv,
},
};
/* SPI devices */
const struct spi_device_t spi_devices[] = {
{ CONFIG_SPI_FLASH_PORT, 0, GPIO_PVT_CS0},
};
const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);
const enum gpio_signal hibernate_wake_pins[] = {
GPIO_AC_PRESENT,
GPIO_LID_OPEN,
GPIO_POWER_BUTTON_L,
};
const int hibernate_wake_pins_used = ARRAY_SIZE(hibernate_wake_pins);
#ifdef CONFIG_KEYBOARD_FACTORY_TEST
/*
* We have total 28 pins for keyboard connecter, {-1, -1} mean
* the N/A pin that don't consider it and reserve index 0 area
* that we don't have pin 0.
*/
const int keyboard_factory_scan_pins[][2] = {
{-1, -1}, {-1, -1}, {-1, -1}, {-1, -1}, {-1, -1},
{12, 6}, {4, 3}, {4, 2}, {0, 2}, {14, 2},
{4, 0}, {0, 0}, {-1, -1}, {3, 2}, {10, 3},
{10, 0}, {12, 5}, {-1, -1}, {10, 2}, {-1, -1},
{0, 1}, {10, 4}, {-1, -1}, {-1, -1}, {0, 4},
{10, 7}, {10, 6}, {0, 3}, {0, 5},
};
const int keyboard_factory_scan_pins_used =
ARRAY_SIZE(keyboard_factory_scan_pins);
#endif
struct pi3usb9281_config pi3usb9281_chips[] = {
{
.i2c_port = I2C_PORT_USB_CHARGER_1,
.mux_lock = NULL,
},
{
.i2c_port = I2C_PORT_USB_CHARGER_2,
.mux_lock = NULL,
},
};
BUILD_ASSERT(ARRAY_SIZE(pi3usb9281_chips) ==
CONFIG_BC12_DETECT_PI3USB9281_CHIP_COUNT);
static int ps874x_tune_mux(int port)
{
/* Apply same USB EQ settings to both Type-C mux */
ps874x_tune_usb_eq(port,
PS874X_USB_EQ_TX_6_5_DB,
PS874X_USB_EQ_RX_14_3_DB);
return EC_SUCCESS;
}
struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = {
{
.port_addr = 0x1A,
.driver = &ps874x_usb_mux_driver,
.board_init = &ps874x_tune_mux,
},
{
.port_addr = 0x10,
.driver = &ps874x_usb_mux_driver,
.board_init = &ps874x_tune_mux,
}
};
/**
* Reset PD MCU
*/
void board_reset_pd_mcu(void)
{
gpio_set_level(GPIO_PD_RST_L, 0);
usleep(100);
gpio_set_level(GPIO_PD_RST_L, 1);
}
void board_rtc_reset(void)
{
CPRINTS("Asserting RTCRST# to PCH");
gpio_set_level(GPIO_PCH_RTCRST, 1);
udelay(100);
gpio_set_level(GPIO_PCH_RTCRST, 0);
}
const struct temp_sensor_t temp_sensors[] = {
{"Battery", TEMP_SENSOR_TYPE_BATTERY, charge_get_battery_temp, 0, 4},
/* These BD99992GW temp sensors are only readable in S0 */
{"Ambient", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
BD99992GW_ADC_CHANNEL_SYSTHERM0, 4},
{"Charger", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
BD99992GW_ADC_CHANNEL_SYSTHERM1, 4},
{"DRAM", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
BD99992GW_ADC_CHANNEL_SYSTHERM2, 4},
{"Wifi", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
BD99992GW_ADC_CHANNEL_SYSTHERM3, 4},
};
BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
static void board_pmic_init(void)
{
/* DISCHGCNT3 - enable 100 ohm discharge on V1.00A */
i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x3e, 0x04);
/*
* No need to re-init below settings since they are present on all MP
* ROs and PMIC settings are sticky across sysjump
*/
if (system_jumped_to_this_image())
return;
/* Set CSDECAYEN / VCCIO decays to 0V at assertion of SLP_S0# */
i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x30, 0x4a);
/*
* Set V100ACNT / V1.00A Control Register:
* Nominal output = 1.0V.
*/
i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x37, 0x1a);
/*
* Set V085ACNT / V0.85A Control Register:
* Lower power mode = 0.7V.
* Nominal output = 1.0V.
*/
i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x38, 0x7a);
/* VRMODECTRL - enable low-power mode for VCCIO and V0.85A */
i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x3b, 0x18);
}
DECLARE_HOOK(HOOK_INIT, board_pmic_init, HOOK_PRIO_DEFAULT);
/* Initialize board. */
static void board_init(void)
{
/* Enable PD MCU interrupt */
gpio_enable_interrupt(GPIO_PD_MCU_INT);
/* Enable VBUS interrupt */
gpio_enable_interrupt(GPIO_USB_C0_VBUS_WAKE_L);
gpio_enable_interrupt(GPIO_USB_C1_VBUS_WAKE_L);
/* Enable pericom BC1.2 interrupts */
gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_L);
gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_L);
/* Provide AC status to the PCH */
gpio_set_level(GPIO_PCH_ACOK, extpower_is_present());
/* Proto board workarounds */
if (system_get_board_version() == 0) {
/* Disable interrupt for SLP_S0 */
gpio_set_flags(GPIO_PCH_SLP_S0_L,
GPIO_INPUT | GPIO_PULL_DOWN);
/* Add internal pullup on PLATFORM_EC_PROCHOT */
gpio_set_flags(GPIO_PLATFORM_EC_PROCHOT,
GPIO_INPUT | GPIO_PULL_UP);
}
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
/**
* Buffer the AC present GPIO to the PCH.
*/
static void board_extpower(void)
{
gpio_set_level(GPIO_PCH_ACOK, extpower_is_present());
}
DECLARE_HOOK(HOOK_AC_CHANGE, board_extpower, HOOK_PRIO_DEFAULT);
/**
* Set active charge port -- only one port can be active at a time.
*
* @param charge_port Charge port to enable.
*
* Returns EC_SUCCESS if charge port is accepted and made active,
* EC_ERROR_* otherwise.
*/
int board_set_active_charge_port(int charge_port)
{
/* charge port is a realy physical port */
int is_real_port = (charge_port >= 0 &&
charge_port < CONFIG_USB_PD_PORT_COUNT);
/* check if we are source vbus on that port */
int source = gpio_get_level(charge_port == 0 ? GPIO_USB_C0_5V_EN :
GPIO_USB_C1_5V_EN);
if (is_real_port && source) {
CPRINTS("Skip enable p%d", charge_port);
return EC_ERROR_INVAL;
}
CPRINTS("New chg p%d", charge_port);
if (charge_port == CHARGE_PORT_NONE) {
/* Disable both ports */
gpio_set_level(GPIO_USB_C0_CHARGE_EN_L, 1);
gpio_set_level(GPIO_USB_C1_CHARGE_EN_L, 1);
} else {
/* Make sure non-charging port is disabled */
gpio_set_level(charge_port ? GPIO_USB_C0_CHARGE_EN_L :
GPIO_USB_C1_CHARGE_EN_L, 1);
/* Enable charging port */
gpio_set_level(charge_port ? GPIO_USB_C1_CHARGE_EN_L :
GPIO_USB_C0_CHARGE_EN_L, 0);
}
return EC_SUCCESS;
}
/**
* Set the charge limit based upon desired maximum.
*
* @param port Port number.
* @param supplier Charge supplier type.
* @param charge_ma Desired charge limit (mA).
* @param charge_mv Negotiated charge voltage (mV).
*/
void board_set_charge_limit(int port, int supplier, int charge_ma,
int max_ma, int charge_mv)
{
charge_set_input_current_limit(MAX(charge_ma,
CONFIG_CHARGER_INPUT_CURRENT), charge_mv);
}
/* Called on AP S5 -> S3 transition */
static void board_chipset_startup(void)
{
gpio_set_level(GPIO_USB1_ENABLE, 1);
gpio_set_level(GPIO_ENABLE_TOUCHPAD, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
/* Called on AP S3 -> S5 transition */
static void board_chipset_shutdown(void)
{
gpio_set_level(GPIO_USB1_ENABLE, 0);
gpio_set_level(GPIO_ENABLE_TOUCHPAD, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);
/* Called on AP S3 -> S0 transition */
static void board_chipset_resume(void)
{
gpio_set_level(GPIO_ENABLE_BACKLIGHT, 1);
gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 1);
gpio_set_level(GPIO_PP1800_DX_DMIC_EN, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
/* Called on AP S0 -> S3 transition */
static void board_chipset_suspend(void)
{
gpio_set_level(GPIO_ENABLE_BACKLIGHT, 0);
gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 0);
gpio_set_level(GPIO_PP1800_DX_DMIC_EN, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
void board_hibernate(void)
{
CPRINTS("Triggering PMIC shutdown.");
uart_flush_output();
/* Trigger PMIC shutdown. */
if (i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x49, 0x01)) {
/*
* If we can't tell the PMIC to shutdown, instead reset
* and don't start the AP. Hopefully we'll be able to
* communicate with the PMIC next time.
*/
CPRINTS("PMIC i2c failed.");
system_reset(SYSTEM_RESET_LEAVE_AP_OFF);
}
/* Await shutdown. */
while (1)
;
}
/* Make the pmic re-sequence the power rails under these conditions. */
#define PMIC_RESET_FLAGS \
(RESET_FLAG_WATCHDOG | RESET_FLAG_SOFT | RESET_FLAG_HARD)
static void board_handle_reboot(void)
{
int flags;
if (system_jumped_to_this_image())
return;
/* Interrogate current reset flags from previous reboot. */
flags = system_get_reset_flags();
if (!(flags & PMIC_RESET_FLAGS))
return;
/* Preserve AP off request. */
if (flags & RESET_FLAG_AP_OFF)
chip_save_reset_flags(RESET_FLAG_AP_OFF);
ccprintf("Restarting system with PMIC.\n");
/* Flush console */
cflush();
/* Bring down all rails but RTC rail (including EC power). */
gpio_set_level(GPIO_PMIC_LDO_EN, 1);
while (1)
; /* wait here */
}
DECLARE_HOOK(HOOK_INIT, board_handle_reboot, HOOK_PRIO_FIRST);
/*
* Various voltage rails will be enabled / disabled by the PMIC when
* GPIO_PMIC_SLP_SUS_L changes. We need to delay the disable of V0.85A
* by approximately 25ms in order to allow V1.00A to sufficiently discharge
* first.
*
* Therefore, after GPIO_PMIC_SLP_SUS_L goes high, ignore the state of
* the V12_EN pin: Keep V0.85A enabled.
*
* When GPIO_PMIC_SLP_SUS_L goes low, delay 25ms, and make V12_EN function
* as normal - this should result in V0.85A discharging immediately after the
* i2c write completes.
*/
void chipset_set_pmic_slp_sus_l(int level)
{
static int previous_level;
int val;
gpio_set_level(GPIO_PMIC_SLP_SUS_L, level);
if (previous_level != level) {
/* Rising edge: Force V0.85A enable. Falling: Pin control. */
val = level ? 0x80 : 0;
if (!level)
msleep(25);
i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS,
0x43, val);
previous_level = level;
}
}
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