diff options
Diffstat (limited to 'zephyr/projects/rex/src/usbc_config.c')
-rw-r--r-- | zephyr/projects/rex/src/usbc_config.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/zephyr/projects/rex/src/usbc_config.c b/zephyr/projects/rex/src/usbc_config.c new file mode 100644 index 0000000000..66f3a1f45d --- /dev/null +++ b/zephyr/projects/rex/src/usbc_config.c @@ -0,0 +1,300 @@ +/* Copyright 2022 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <zephyr/drivers/gpio.h> + +#include "battery_fuel_gauge.h" +#include "charger.h" +#include "charge_manager.h" +#include "charge_ramp.h" +#include "charge_state_v2.h" +#include "charge_state.h" +#include "charger.h" +#include "driver/charger/isl9241.h" +#include "driver/retimer/bb_retimer_public.h" +#include "driver/tcpm/nct38xx.h" +#include "driver/tcpm/ps8xxx_public.h" +#include "driver/tcpm/tcpci.h" +#include "gpio/gpio_int.h" +#include "hooks.h" +#include "i2c.h" +#include "ioexpander.h" +#include "driver/ppc/nx20p348x.h" +#include "ppc/syv682x_public.h" +#include "system.h" +#include "task.h" +#include "usb_mux.h" +#include "usbc_ppc.h" + +#define CPRINTSUSB(format, args...) cprints(CC_USBCHARGE, format, ##args) +#define CPRINTFUSB(format, args...) cprintf(CC_USBCHARGE, format, ##args) + +/*******************************************************************/ +/* USB-C Configuration Start */ + +/* USB-C ports */ +enum usbc_port { USBC_PORT_C0 = 0, USBC_PORT_C1, USBC_PORT_COUNT }; +BUILD_ASSERT(USBC_PORT_COUNT == CONFIG_USB_PD_PORT_MAX_COUNT); + +static void usbc_interrupt_init(void) +{ + /* Only reset TCPC if not sysjump */ + if (!system_jumped_late()) { + board_reset_pd_mcu(); + } + + /* Enable PPC interrupts. */ + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c0_ppc)); + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c1_ppc)); + + /* Enable TCPC interrupts. */ + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c0_tcpc)); + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c1_tcpc)); + + /* Enable BC 1.2 interrupts */ + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c0_bc12)); + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c1_bc12)); + + /* Enable SBU fault interrupts */ + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usb_c0_sbu_fault)); +} +DECLARE_HOOK(HOOK_INIT, usbc_interrupt_init, HOOK_PRIO_POST_I2C); + +void board_overcurrent_event(int port, int is_overcurrented) +{ + /* + * TODO: Meteorlake PCH does not use Physical GPIO for over current + * error, hence Send 'Over Current Virtual Wire' eSPI signal. + */ +} + +void sbu_fault_interrupt(enum gpio_signal signal) +{ + int port = USBC_PORT_C0; + + CPRINTSUSB("C%d: SBU fault", port); + pd_handle_overcurrent(port); +} + +void tcpc_alert_event(enum gpio_signal signal) +{ + int port; + + switch (signal) { + case GPIO_USB_C0_TCPC_INT_ODL: + port = 0; + break; + case GPIO_USB_C1_TCPC_INT_ODL: + port = 1; + break; + default: + return; + } + + schedule_deferred_pd_interrupt(port); +} + +static void reset_nct38xx_port(int port) +{ + const struct gpio_dt_spec *reset_gpio_l; + const struct device *ioex_port0, *ioex_port1; + + /* TODO(b/225189538): Save and restore ioex signals */ + if (port == USBC_PORT_C0) { + reset_gpio_l = GPIO_DT_FROM_NODELABEL(gpio_usb_c0_tcpc_rst_odl); + ioex_port0 = DEVICE_DT_GET(DT_NODELABEL(ioex_c0_port0)); + ioex_port1 = DEVICE_DT_GET(DT_NODELABEL(ioex_c0_port1)); + } else { + /* Invalid port: do nothing */ + return; + } + + gpio_pin_set_dt(reset_gpio_l, 0); + msleep(NCT38XX_RESET_HOLD_DELAY_MS); + gpio_pin_set_dt(reset_gpio_l, 1); + nct38xx_reset_notify(port); + if (NCT3807_RESET_POST_DELAY_MS != 0) { + msleep(NCT3807_RESET_POST_DELAY_MS); + } + + /* Re-enable the IO expander pins */ + gpio_reset_port(ioex_port0); + gpio_reset_port(ioex_port1); +} + +void board_reset_pd_mcu(void) +{ + /* Reset TCPC0 */ + reset_nct38xx_port(USBC_PORT_C0); + + /* Reset TCPC1 */ + gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_usb_c1_rt_rst_r_odl), 0); + msleep(PS8XXX_RESET_DELAY_MS); + gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_usb_c1_rt_rst_r_odl), 1); + msleep(PS8815_FW_INIT_DELAY_MS); +} + +uint16_t tcpc_get_alert_status(void) +{ + uint16_t status = 0; + const struct gpio_dt_spec *tcpc_c0_rst_l; + const struct gpio_dt_spec *tcpc_c0_int_l; + const struct gpio_dt_spec *tcpc_c1_rst_l; + const struct gpio_dt_spec *tcpc_c1_int_l; + + tcpc_c0_rst_l = GPIO_DT_FROM_NODELABEL(gpio_usb_c0_tcpc_rst_odl); + tcpc_c0_int_l = GPIO_DT_FROM_NODELABEL(gpio_usb_c0_tcpc_int_odl); + + tcpc_c1_rst_l = GPIO_DT_FROM_NODELABEL(gpio_usb_c1_rt_rst_r_odl); + tcpc_c1_int_l = GPIO_DT_FROM_NODELABEL(gpio_usb_c1_tcpc_int_odl); + + /* + * Check which port has the ALERT line set and ignore if that TCPC has + * its reset line active. + */ + if (!gpio_pin_get_dt(tcpc_c0_int_l) && gpio_pin_get_dt(tcpc_c0_rst_l)) { + status |= PD_STATUS_TCPC_ALERT_0; + } + + if (!gpio_pin_get_dt(tcpc_c1_int_l) && gpio_pin_get_dt(tcpc_c1_rst_l)) { + status |= PD_STATUS_TCPC_ALERT_1; + } + + return status; +} + +void ppc_interrupt(enum gpio_signal signal) +{ + switch (signal) { + case GPIO_USB_C0_PPC_INT_ODL: + syv682x_interrupt(USBC_PORT_C0); + break; + case GPIO_USB_C1_PPC_INT_ODL: + nx20p348x_interrupt(USBC_PORT_C1); + break; + default: + break; + } +} + +void bc12_interrupt(enum gpio_signal signal) +{ + switch (signal) { + case GPIO_USB_C0_BC12_INT_ODL: + usb_charger_task_set_event(0, USB_CHG_EVENT_BC12); + break; + case GPIO_USB_C1_BC12_INT_ODL: + usb_charger_task_set_event(1, USB_CHG_EVENT_BC12); + break; + default: + break; + } +} + +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); +} + +static void board_disable_charger_ports(void) +{ + int i; + + CPRINTSUSB("Disabling all charger ports"); + + /* Disable all ports. */ + for (i = 0; i < ppc_cnt; i++) { + /* + * If this port had booted in dead battery mode, go + * ahead and reset it so EN_SNK responds properly. + */ + if (nct38xx_get_boot_type(i) == NCT38XX_BOOT_DEAD_BATTERY) { + reset_nct38xx_port(i); + pd_set_error_recovery(i); + } + + /* + * Do not return early if one fails otherwise we can + * get into a boot loop assertion failure. + */ + if (ppc_vbus_sink_enable(i, 0)) { + CPRINTSUSB("Disabling C%d as sink failed.", i); + } + } +} + +int board_set_active_charge_port(int port) +{ + int is_valid_port = (port >= 0 && port < CONFIG_USB_PD_PORT_MAX_COUNT); + int i; + int rv; + + if (port == CHARGE_PORT_NONE) { + board_disable_charger_ports(); + return EC_SUCCESS; + } else if (!is_valid_port) { + return EC_ERROR_INVAL; + } + + /* + * Check if we can reset any ports in dead battery mode + * + * The NCT3807 may continue to keep EN_SNK low on the dead battery port + * and allow a dangerous level of voltage to pass through to the initial + * charge port (see b/183660105). We must reset the ports if we have + * sufficient battery to do so, which will bring EN_SNK back under + * normal control. + */ + rv = EC_SUCCESS; + if (port == USBC_PORT_C0 && + nct38xx_get_boot_type(port) == NCT38XX_BOOT_DEAD_BATTERY) { + /* Handle dead battery boot case */ + CPRINTSUSB("Found dead battery on C0"); + /* + * If we have battery, get this port reset ASAP. + * This means temporarily rejecting charge manager + * sets to it. + */ + if (pd_is_battery_capable()) { + reset_nct38xx_port(port); + pd_set_error_recovery(port); + } + } + + if (rv != EC_SUCCESS) { + return rv; + } + + /* Check if the port is sourcing VBUS. */ + if (tcpm_get_src_ctrl(port)) { + CPRINTSUSB("Skip enable C%d", port); + return EC_ERROR_INVAL; + } + + CPRINTSUSB("New charge port: C%d", port); + + /* + * Turn off the other ports' sink path FETs, before enabling the + * requested charge port. + */ + for (i = 0; i < ppc_cnt; i++) { + if (i == port) { + continue; + } + if (ppc_vbus_sink_enable(i, 0)) { + CPRINTSUSB("C%d: sink path disable failed.", i); + } + } + + /* Enable requested charge port. */ + if (ppc_vbus_sink_enable(port, 1)) { + CPRINTSUSB("C%d: sink path enable failed.", port); + return EC_ERROR_UNKNOWN; + } + + return EC_SUCCESS; +} |