diff options
Diffstat (limited to 'zephyr/projects/corsola/src/usbc_config.c')
| -rw-r--r-- | zephyr/projects/corsola/src/usbc_config.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/zephyr/projects/corsola/src/usbc_config.c b/zephyr/projects/corsola/src/usbc_config.c new file mode 100644 index 0000000000..e3a2796de5 --- /dev/null +++ b/zephyr/projects/corsola/src/usbc_config.c @@ -0,0 +1,319 @@ +/* Copyright 2021 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* Corsola baseboard-specific USB-C configuration */ + +#include <zephyr/drivers/gpio.h> +#include <ap_power/ap_power.h> + +#include "adc.h" +#include "baseboard_usbc_config.h" +#include "button.h" +#include "charger.h" +#include "charge_state_v2.h" +#include "console.h" +#include "ec_commands.h" +#include "extpower.h" +#include "gpio/gpio_int.h" +#include "hooks.h" +#include "i2c.h" +#include "lid_switch.h" +#include "task.h" +#include "ppc/syv682x_public.h" +#include "power.h" +#include "power_button.h" +#include "spi.h" +#include "switch.h" +#include "tablet_mode.h" +#include "uart.h" +#include "usb_charge.h" +#include "usb_mux.h" +#include "usb_pd_tcpm.h" +#include "usb_tc_sm.h" +#include "usbc/usb_muxes.h" +#include "usbc_ppc.h" + +#include "variant_db_detection.h" + +#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ##args) +#define CPRINTF(format, args...) cprintf(CC_SYSTEM, format, ##args) + +/* a flag for indicating the tasks are inited. */ +static bool tasks_inited; + +/* Baseboard */ +static void baseboard_init(void) +{ +#ifdef CONFIG_VARIANT_CORSOLA_USBA + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_usba)); +#endif + /* If CCD mode has enabled before init, force the ccd_interrupt. */ + if (!gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_ccd_mode_odl))) { + ccd_interrupt(GPIO_CCD_MODE_ODL); + } + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_ccd_mode_odl)); +} +DECLARE_HOOK(HOOK_INIT, baseboard_init, HOOK_PRIO_PRE_DEFAULT); + +__override uint8_t board_get_usb_pd_port_count(void) +{ + if (corsola_get_db_type() == CORSOLA_DB_HDMI) { + if (tasks_inited) { + return CONFIG_USB_PD_PORT_MAX_COUNT; + } else { + return CONFIG_USB_PD_PORT_MAX_COUNT - 1; + } + } else if (corsola_get_db_type() == CORSOLA_DB_NONE) { + return CONFIG_USB_PD_PORT_MAX_COUNT - 1; + } + + return CONFIG_USB_PD_PORT_MAX_COUNT; +} + +/* USB-A */ +void usb_a0_interrupt(enum gpio_signal signal) +{ + enum usb_charge_mode mode = gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL( + gpio_ap_xhci_init_done)) ? + USB_CHARGE_MODE_ENABLED : + USB_CHARGE_MODE_DISABLED; + + const int xhci_stat = gpio_get_level(signal); + + for (int i = 0; i < USB_PORT_COUNT; i++) { + usb_charge_set_mode(i, mode, USB_ALLOW_SUSPEND_CHARGE); + } + + for (int i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) { + /* + * Enable DRP toggle after XHCI inited. This is used to follow + * USB 3.2 spec 10.3.1.1. + */ + if (xhci_stat) { + pd_set_dual_role(i, PD_DRP_TOGGLE_ON); + } else if (tc_is_attached_src(i)) { + /* + * This is a AP reset S0->S0 transition. + * We should set the role back to sink. + */ + pd_set_dual_role(i, PD_DRP_FORCE_SINK); + } + } +} + +__override enum pd_dual_role_states pd_get_drp_state_in_s0(void) +{ + if (gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_ap_xhci_init_done))) { + return PD_DRP_TOGGLE_ON; + } else { + return PD_DRP_FORCE_SINK; + } +} + +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); +} + +void board_pd_vconn_ctrl(int port, enum usbpd_cc_pin cc_pin, int enabled) +{ + /* + * We ignore the cc_pin and PPC vconn because polarity and PPC vconn + * should already be set correctly in the PPC driver via the pd + * state machine. + */ +} + +/** + * Handle PS185 HPD changing state. + */ +int debounced_hpd; + +static void ps185_hdmi_hpd_deferred(void) +{ + const int new_hpd = + gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd)); + + /* HPD status not changed, probably a glitch, just return. */ + if (debounced_hpd == new_hpd) { + return; + } + + debounced_hpd = new_hpd; + + if (!corsola_is_dp_muxable(USBC_PORT_C1)) { + if (debounced_hpd) { + CPRINTS("C0 port is already muxed."); + } + return; + } + + if (debounced_hpd) { + dp_status[USBC_PORT_C1] = + VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */ + 0, /* HPD level ... not applicable */ + 0, /* exit DP? ... no */ + 0, /* usb mode? ... no */ + 0, /* multi-function ... no */ + 1, /* DP enabled ... yes */ + 0, /* power low? ... no */ + (!!DP_FLAGS_DP_ON)); + /* update C1 virtual mux */ + usb_mux_set(USBC_PORT_C1, USB_PD_MUX_DP_ENABLED, + USB_SWITCH_DISCONNECT, + 0 /* polarity, don't care */); + + gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(dp_aux_path_sel), + debounced_hpd); + CPRINTS("Set DP_AUX_PATH_SEL: %d", 1); + } + svdm_set_hpd_gpio(USBC_PORT_C1, debounced_hpd); + CPRINTS(debounced_hpd ? "HDMI plug" : "HDMI unplug"); +} +DECLARE_DEFERRED(ps185_hdmi_hpd_deferred); + +static void ps185_hdmi_hpd_disconnect_deferred(void) +{ + const int new_hpd = + gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd)); + + if (debounced_hpd == new_hpd && !new_hpd) { + dp_status[USBC_PORT_C1] = + VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */ + 0, /* HPD level ... not applicable */ + 0, /* exit DP? ... no */ + 0, /* usb mode? ... no */ + 0, /* multi-function ... no */ + 0, /* DP enabled ... no */ + 0, /* power low? ... no */ + (!DP_FLAGS_DP_ON)); + usb_mux_set(USBC_PORT_C1, USB_PD_MUX_NONE, + USB_SWITCH_DISCONNECT, + 0 /* polarity, don't care */); + } +} +DECLARE_DEFERRED(ps185_hdmi_hpd_disconnect_deferred); + +#define PS185_HPD_DEBOUCE 250 +#define HPD_SINK_ABSENCE_DEBOUNCE (2 * MSEC) + +static void hdmi_hpd_interrupt(enum gpio_signal signal) +{ + hook_call_deferred(&ps185_hdmi_hpd_deferred_data, PS185_HPD_DEBOUCE); + + if (!gpio_pin_get_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd))) { + hook_call_deferred(&ps185_hdmi_hpd_disconnect_deferred_data, + HPD_SINK_ABSENCE_DEBOUNCE); + } else { + hook_call_deferred(&ps185_hdmi_hpd_disconnect_deferred_data, + -1); + } +} + +/* HDMI/TYPE-C function shared subboard interrupt */ +void x_ec_interrupt(enum gpio_signal signal) +{ + int sub = corsola_get_db_type(); + + if (sub == CORSOLA_DB_TYPEC) { + /* C1: PPC interrupt */ + ppc_interrupt(signal); + } else if (sub == CORSOLA_DB_HDMI) { + hdmi_hpd_interrupt(signal); + } else { + CPRINTS("Undetected subboard interrupt."); + } +} + +static void board_hdmi_handler(struct ap_power_ev_callback *cb, + struct ap_power_ev_data data) +{ + int value; + + switch (data.event) { + default: + return; + + case AP_POWER_RESUME: + value = 1; + break; + + case AP_POWER_SUSPEND: + value = 0; + break; + } + gpio_pin_set_dt(GPIO_DT_FROM_ALIAS(gpio_en_hdmi_pwr), value); + gpio_pin_set_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_pwrdn_odl), value); +} + +static void tasks_init_deferred(void) +{ + tasks_inited = true; +} +DECLARE_DEFERRED(tasks_init_deferred); + +static void baseboard_x_ec_gpio2_init(void) +{ + static struct ppc_drv virtual_ppc_drv = { 0 }; + static struct tcpm_drv virtual_tcpc_drv = { 0 }; + static struct bc12_drv virtual_bc12_drv = { 0 }; + + /* no sub board */ + if (corsola_get_db_type() == CORSOLA_DB_NONE) { + return; + } + + /* type-c: USB_C1_PPC_INT_ODL / hdmi: PS185_EC_DP_HPD */ + gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_x_ec_gpio2)); + + if (corsola_get_db_type() == CORSOLA_DB_TYPEC) { + gpio_pin_interrupt_configure_dt( + GPIO_DT_FROM_ALIAS(gpio_usb_c1_ppc_int_odl), + GPIO_INT_EDGE_FALLING); + return; + } + if (corsola_get_db_type() == CORSOLA_DB_HDMI) { + static struct ap_power_ev_callback cb; + + ap_power_ev_init_callback(&cb, board_hdmi_handler, + AP_POWER_RESUME | AP_POWER_SUSPEND); + ap_power_ev_add_callback(&cb); + } + + /* drop related C1 port drivers when it's a HDMI DB. */ + ppc_chips[USBC_PORT_C1] = + (const struct ppc_config_t){ .drv = &virtual_ppc_drv }; + tcpc_config[USBC_PORT_C1] = + (const struct tcpc_config_t){ .drv = &virtual_tcpc_drv }; + bc12_ports[USBC_PORT_C1] = + (const struct bc12_config){ .drv = &virtual_bc12_drv }; + /* Use virtual mux to notify AP the mainlink direction. */ + USB_MUX_ENABLE_ALTERNATIVE(usb_mux_chain_1_hdmi_db); + + /* + * If a HDMI DB is attached, C1 port tasks will be exiting in that + * the port number is larger than board_get_usb_pd_port_count(). + * After C1 port tasks finished, we intentionally increase the port + * count by 1 for usb_mux to access the C1 virtual mux for notifying + * mainlink direction. + */ + hook_call_deferred(&tasks_init_deferred_data, 2 * SECOND); +} +DECLARE_HOOK(HOOK_INIT, baseboard_x_ec_gpio2_init, HOOK_PRIO_DEFAULT); + +__override uint8_t get_dp_pin_mode(int port) +{ + if (corsola_get_db_type() == CORSOLA_DB_HDMI && port == USBC_PORT_C1) { + if (usb_mux_get(USBC_PORT_C1) & USB_PD_MUX_DP_ENABLED) { + return MODE_DP_PIN_E; + } else { + return 0; + } + } + + return pd_dfp_dp_get_pin_mode(port, dp_status[port]); +} |