diff options
Diffstat (limited to 'zephyr/projects/rex/src/usb_pd_policy.c')
-rw-r--r-- | zephyr/projects/rex/src/usb_pd_policy.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/zephyr/projects/rex/src/usb_pd_policy.c b/zephyr/projects/rex/src/usb_pd_policy.c new file mode 100644 index 0000000000..7e9876f9c1 --- /dev/null +++ b/zephyr/projects/rex/src/usb_pd_policy.c @@ -0,0 +1,77 @@ +/* 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. + */ + +/* Shared USB-C policy for Rex boards */ + +#include <zephyr/drivers/gpio.h> + +#include "charge_manager.h" +#include "chipset.h" +#include "common.h" +#include "compile_time_macros.h" +#include "console.h" +#include "ec_commands.h" +#include "ioexpander.h" +#include "system.h" +#include "usb_mux.h" +#include "usb_pd.h" +#include "usbc_ppc.h" +#include "util.h" + +int pd_check_vconn_swap(int port) +{ + /* Allow VCONN swaps if the AP is on. */ + return chipset_in_state(CHIPSET_STATE_ANY_SUSPEND | CHIPSET_STATE_ON); +} + +void pd_power_supply_reset(int port) +{ + /* Disable VBUS. */ + ppc_vbus_source_enable(port, 0); + + /* Enable discharge if we were previously sourcing 5V */ + if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE)) + pd_set_vbus_discharge(port, 1); + + /* Notify host of power info change. */ + pd_send_host_event(PD_EVENT_POWER_CHANGE); +} + +int pd_set_power_supply_ready(int port) +{ + int rv; + + /* Disable charging. */ + rv = ppc_vbus_sink_enable(port, 0); + if (rv) + return rv; + + if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE)) { + pd_set_vbus_discharge(port, 0); + } + + /* Provide Vbus. */ + rv = ppc_vbus_source_enable(port, 1); + if (rv) { + return rv; + } + + /* Notify host of power info change. */ + pd_send_host_event(PD_EVENT_POWER_CHANGE); + + return EC_SUCCESS; +} + +/* Used by Vbus discharge common code with CONFIG_USB_PD_DISCHARGE */ +int board_vbus_source_enabled(int port) +{ + return tcpm_get_src_ctrl(port); +} + +/* Used by USB charger task with CONFIG_USB_PD_5V_EN_CUSTOM */ +int board_is_sourcing_vbus(int port) +{ + return board_vbus_source_enabled(port); +} |