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|
/* Copyright 2019 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.
*/
/*
* Contains common USB functions shared between the old (i.e. usb_pd_protocol)
* and the new (i.e. usb_sm_*) USB-C PD stacks.
*/
#include "atomic.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "ec_commands.h"
#include "hooks.h"
#include "stdbool.h"
#include "host_command.h"
#include "system.h"
#include "task.h"
#include "usb_api.h"
#include "usb_common.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#include "usbc_ppc.h"
#include "util.h"
#ifdef CONFIG_COMMON_RUNTIME
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#else
#define CPRINTS(format, args...)
#define CPRINTF(format, args...)
#endif
__overridable void board_vbus_present_change(void)
{
}
#if defined(CONFIG_CMD_PD) && defined(CONFIG_CMD_PD_FLASH)
int hex8tou32(char *str, uint32_t *val)
{
char *ptr = str;
uint32_t tmp = 0;
while (*ptr) {
char c = *ptr++;
if (c >= '0' && c <= '9')
tmp = (tmp << 4) + (c - '0');
else if (c >= 'A' && c <= 'F')
tmp = (tmp << 4) + (c - 'A' + 10);
else if (c >= 'a' && c <= 'f')
tmp = (tmp << 4) + (c - 'a' + 10);
else
return EC_ERROR_INVAL;
}
if (ptr != str + 8)
return EC_ERROR_INVAL;
*val = tmp;
return EC_SUCCESS;
}
int remote_flashing(int argc, char **argv)
{
int port, cnt, cmd;
uint32_t data[VDO_MAX_SIZE-1];
char *e;
static int flash_offset[CONFIG_USB_PD_PORT_MAX_COUNT];
if (argc < 4 || argc > (VDO_MAX_SIZE + 4 - 1))
return EC_ERROR_PARAM_COUNT;
port = strtoi(argv[1], &e, 10);
if (*e || port >= board_get_usb_pd_port_count())
return EC_ERROR_PARAM2;
cnt = 0;
if (!strcasecmp(argv[3], "erase")) {
cmd = VDO_CMD_FLASH_ERASE;
flash_offset[port] = 0;
ccprintf("ERASE ...");
} else if (!strcasecmp(argv[3], "reboot")) {
cmd = VDO_CMD_REBOOT;
ccprintf("REBOOT ...");
} else if (!strcasecmp(argv[3], "signature")) {
cmd = VDO_CMD_ERASE_SIG;
ccprintf("ERASE SIG ...");
} else if (!strcasecmp(argv[3], "info")) {
cmd = VDO_CMD_READ_INFO;
ccprintf("INFO...");
} else if (!strcasecmp(argv[3], "version")) {
cmd = VDO_CMD_VERSION;
ccprintf("VERSION...");
} else {
int i;
argc -= 3;
for (i = 0; i < argc; i++)
if (hex8tou32(argv[i+3], data + i))
return EC_ERROR_INVAL;
cmd = VDO_CMD_FLASH_WRITE;
cnt = argc;
ccprintf("WRITE %d @%04x ...", argc * 4,
flash_offset[port]);
flash_offset[port] += argc * 4;
}
pd_send_vdm(port, USB_VID_GOOGLE, cmd, data, cnt);
/* Wait until VDM is done */
while (pd[port].vdm_state > 0)
task_wait_event(100*MSEC);
ccprintf("DONE %d\n", pd[port].vdm_state);
return EC_SUCCESS;
}
#endif /* defined(CONFIG_CMD_PD) && defined(CONFIG_CMD_PD_FLASH) */
int usb_get_battery_soc(void)
{
#if defined(CONFIG_CHARGER)
return charge_get_percent();
#elif defined(CONFIG_BATTERY)
return board_get_battery_soc();
#else
return 0;
#endif
}
#if defined(CONFIG_USB_PD_PREFER_MV) && defined(PD_PREFER_LOW_VOLTAGE) + \
defined(PD_PREFER_HIGH_VOLTAGE) > 1
#error "PD preferred voltage strategy should be mutually exclusive."
#endif
/*
* CC values for regular sources and Debug sources (aka DTS)
*
* Source type Mode of Operation CC1 CC2
* ---------------------------------------------
* Regular Default USB Power RpUSB Open
* Regular USB-C @ 1.5 A Rp1A5 Open
* Regular USB-C @ 3 A Rp3A0 Open
* DTS Default USB Power Rp3A0 Rp1A5
* DTS USB-C @ 1.5 A Rp1A5 RpUSB
* DTS USB-C @ 3 A Rp3A0 RpUSB
*/
typec_current_t usb_get_typec_current_limit(enum tcpc_cc_polarity polarity,
enum tcpc_cc_voltage_status cc1, enum tcpc_cc_voltage_status cc2)
{
typec_current_t charge = 0;
enum tcpc_cc_voltage_status cc;
enum tcpc_cc_voltage_status cc_alt;
cc = polarity_rm_dts(polarity) ? cc2 : cc1;
cc_alt = polarity_rm_dts(polarity) ? cc1 : cc2;
switch (cc) {
case TYPEC_CC_VOLT_RP_3_0:
if (!cc_is_rp(cc_alt) || cc_alt == TYPEC_CC_VOLT_RP_DEF)
charge = 3000;
else if (cc_alt == TYPEC_CC_VOLT_RP_1_5)
charge = 500;
break;
case TYPEC_CC_VOLT_RP_1_5:
charge = 1500;
break;
case TYPEC_CC_VOLT_RP_DEF:
charge = 500;
break;
default:
break;
}
if (IS_ENABLED(CONFIG_USBC_DISABLE_CHARGE_FROM_RP_DEF) && charge == 500)
charge = 0;
if (cc_is_rp(cc_alt))
charge |= TYPEC_CURRENT_DTS_MASK;
return charge;
}
enum tcpc_cc_polarity get_snk_polarity(enum tcpc_cc_voltage_status cc1,
enum tcpc_cc_voltage_status cc2)
{
/* The following assumes:
*
* TYPEC_CC_VOLT_RP_3_0 > TYPEC_CC_VOLT_RP_1_5
* TYPEC_CC_VOLT_RP_1_5 > TYPEC_CC_VOLT_RP_DEF
* TYPEC_CC_VOLT_RP_DEF > TYPEC_CC_VOLT_OPEN
*/
if (cc_is_src_dbg_acc(cc1, cc2))
return (cc1 > cc2) ? POLARITY_CC1_DTS : POLARITY_CC2_DTS;
return (cc1 > cc2) ? POLARITY_CC1 : POLARITY_CC2;
}
enum tcpc_cc_polarity get_src_polarity(enum tcpc_cc_voltage_status cc1,
enum tcpc_cc_voltage_status cc2)
{
return (cc1 == TYPEC_CC_VOLT_RD) ? POLARITY_CC1 : POLARITY_CC2;
}
enum pd_cc_states pd_get_cc_state(
enum tcpc_cc_voltage_status cc1, enum tcpc_cc_voltage_status cc2)
{
/* Port partner is a SNK */
if (cc_is_snk_dbg_acc(cc1, cc2))
return PD_CC_UFP_DEBUG_ACC;
if (cc_is_at_least_one_rd(cc1, cc2))
return PD_CC_UFP_ATTACHED;
if (cc_is_audio_acc(cc1, cc2))
return PD_CC_UFP_AUDIO_ACC;
/* Port partner is a SRC */
if (cc_is_rp(cc1) && cc_is_rp(cc2))
return PD_CC_DFP_DEBUG_ACC;
if (cc_is_rp(cc1) || cc_is_rp(cc2))
return PD_CC_DFP_ATTACHED;
/*
* 1) Both lines are Vopen or
* 2) Only an e-marked cabled without a partner on the other side
*/
return PD_CC_NONE;
}
/**
* This function checks the current CC status of the port partner
* and returns true if the attached partner is debug accessory.
*/
bool pd_is_debug_acc(int port)
{
enum pd_cc_states cc_state = pd_get_task_cc_state(port);
return cc_state == PD_CC_UFP_DEBUG_ACC ||
cc_state == PD_CC_DFP_DEBUG_ACC;
}
void pd_set_polarity(int port, enum tcpc_cc_polarity polarity)
{
tcpm_set_polarity(port, polarity);
if (IS_ENABLED(CONFIG_USBC_PPC_POLARITY))
ppc_set_polarity(port, polarity);
}
__overridable int pd_board_check_request(uint32_t rdo, int pdo_cnt)
{
return EC_SUCCESS;
}
int pd_check_requested_voltage(uint32_t rdo, const int port)
{
int max_ma = rdo & 0x3FF;
int op_ma = (rdo >> 10) & 0x3FF;
int idx = RDO_POS(rdo);
uint32_t pdo;
uint32_t pdo_ma;
#if defined(CONFIG_USB_PD_DYNAMIC_SRC_CAP) || \
defined(CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT)
const uint32_t *src_pdo;
const int pdo_cnt = charge_manager_get_source_pdo(&src_pdo, port);
#else
const uint32_t *src_pdo = pd_src_pdo;
const int pdo_cnt = pd_src_pdo_cnt;
#endif
/* Check for invalid index */
if (!idx || idx > pdo_cnt)
return EC_ERROR_INVAL;
/* Board specific check for this request */
if (pd_board_check_request(rdo, pdo_cnt))
return EC_ERROR_INVAL;
/* check current ... */
pdo = src_pdo[idx - 1];
pdo_ma = (pdo & 0x3ff);
if (op_ma > pdo_ma)
return EC_ERROR_INVAL; /* too much op current */
if (max_ma > pdo_ma && !(rdo & RDO_CAP_MISMATCH))
return EC_ERROR_INVAL; /* too much max current */
CPRINTF("Requested %d mV %d mA (for %d/%d mA)\n",
((pdo >> 10) & 0x3ff) * 50, (pdo & 0x3ff) * 10,
op_ma * 10, max_ma * 10);
/* Accept the requested voltage */
return EC_SUCCESS;
}
__overridable uint8_t board_get_usb_pd_port_count(void)
{
return CONFIG_USB_PD_PORT_MAX_COUNT;
}
enum pd_drp_next_states drp_auto_toggle_next_state(
uint64_t *drp_sink_time,
enum pd_power_role power_role,
enum pd_dual_role_states drp_state,
enum tcpc_cc_voltage_status cc1,
enum tcpc_cc_voltage_status cc2,
bool auto_toggle_supported)
{
const bool hardware_debounced_unattached =
((drp_state == PD_DRP_TOGGLE_ON) &&
auto_toggle_supported);
/* Set to appropriate port state */
if (cc_is_open(cc1, cc2)) {
/*
* If nothing is attached then use drp_state to determine next
* state. If DRP auto toggle is still on, then remain in the
* DRP_AUTO_TOGGLE state. Otherwise, stop dual role toggling
* and go to a disconnected state.
*/
switch (drp_state) {
case PD_DRP_TOGGLE_OFF:
return DRP_TC_DEFAULT;
case PD_DRP_FREEZE:
if (power_role == PD_ROLE_SINK)
return DRP_TC_UNATTACHED_SNK;
else
return DRP_TC_UNATTACHED_SRC;
case PD_DRP_FORCE_SINK:
return DRP_TC_UNATTACHED_SNK;
case PD_DRP_FORCE_SOURCE:
return DRP_TC_UNATTACHED_SRC;
case PD_DRP_TOGGLE_ON:
default:
if (!auto_toggle_supported) {
if (power_role == PD_ROLE_SINK)
return DRP_TC_UNATTACHED_SNK;
else
return DRP_TC_UNATTACHED_SRC;
}
return DRP_TC_DRP_AUTO_TOGGLE;
}
} else if ((cc_is_rp(cc1) || cc_is_rp(cc2)) &&
drp_state != PD_DRP_FORCE_SOURCE) {
/* SNK allowed unless ForceSRC */
if (hardware_debounced_unattached)
return DRP_TC_ATTACHED_WAIT_SNK;
return DRP_TC_UNATTACHED_SNK;
} else if (cc_is_at_least_one_rd(cc1, cc2) ||
cc_is_audio_acc(cc1, cc2)) {
/*
* SRC allowed unless ForceSNK or Toggle Off
*
* Ideally we wouldn't use auto-toggle when drp_state is
* TOGGLE_OFF/FORCE_SINK, but for some TCPCs, auto-toggle can't
* be prevented in low power mode. Try being a sink in case the
* connected device is dual-role (this ensures reliable charging
* from a hub, b/72007056). 100 ms is enough time for a
* dual-role partner to switch from sink to source. If the
* connected device is sink-only, then we will attempt
* TC_UNATTACHED_SNK twice (due to debounce time), then return
* to low power mode (and stay there). After 200 ms, reset
* ready for a new connection.
*/
if (drp_state == PD_DRP_TOGGLE_OFF ||
drp_state == PD_DRP_FORCE_SINK) {
if (get_time().val > *drp_sink_time + 200*MSEC)
*drp_sink_time = get_time().val;
if (get_time().val < *drp_sink_time + 100*MSEC)
return DRP_TC_UNATTACHED_SNK;
else
return DRP_TC_DRP_AUTO_TOGGLE;
} else {
if (hardware_debounced_unattached)
return DRP_TC_ATTACHED_WAIT_SRC;
return DRP_TC_UNATTACHED_SRC;
}
} else {
/* Anything else, keep toggling */
if (!auto_toggle_supported) {
if (power_role == PD_ROLE_SINK)
return DRP_TC_UNATTACHED_SNK;
else
return DRP_TC_UNATTACHED_SRC;
}
return DRP_TC_DRP_AUTO_TOGGLE;
}
}
mux_state_t get_mux_mode_to_set(int port)
{
/*
* If the SoC is down, then we disconnect the MUX to save power since
* no one cares about the data lines.
*/
if (IS_ENABLED(CONFIG_POWER_COMMON) &&
chipset_in_or_transitioning_to_state(CHIPSET_STATE_ANY_OFF))
return USB_PD_MUX_NONE;
/*
* When PD stack is disconnected, then mux should be disconnected, which
* is also what happens in the set_state disconnection code. Once the
* PD state machine progresses out of disconnect, the MUX state will
* be set correctly again.
*/
if (pd_is_disconnected(port))
return USB_PD_MUX_NONE;
/* If new data role isn't DFP & we only support DFP, also disconnect. */
if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE) &&
IS_ENABLED(CONFIG_USBC_SS_MUX_DFP_ONLY) &&
pd_get_data_role(port) != PD_ROLE_DFP)
return USB_PD_MUX_NONE;
/*
* If the power role is sink and the partner device is not capable
* of USB communication then disconnect.
*/
if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE) &&
pd_get_power_role(port) == PD_ROLE_SINK &&
!pd_get_partner_usb_comm_capable(port))
return USB_PD_MUX_NONE;
/* Otherwise connect mux since we are in S3+ */
return USB_PD_MUX_USB_ENABLED;
}
void set_usb_mux_with_current_data_role(int port)
{
if (IS_ENABLED(CONFIG_USBC_SS_MUX)) {
mux_state_t mux_mode = get_mux_mode_to_set(port);
enum usb_switch usb_switch_mode =
(mux_mode == USB_PD_MUX_NONE) ?
USB_SWITCH_DISCONNECT : USB_SWITCH_CONNECT;
usb_mux_set(port, mux_mode, usb_switch_mode,
pd_get_polarity(port));
}
}
void usb_mux_set_safe_mode(int port)
{
if (IS_ENABLED(CONFIG_USBC_SS_MUX)) {
usb_mux_set(port, IS_ENABLED(CONFIG_USB_MUX_VIRTUAL) ?
USB_PD_MUX_SAFE_MODE : USB_PD_MUX_NONE,
USB_SWITCH_CONNECT, pd_get_polarity(port));
}
/* Isolate the SBU lines. */
if (IS_ENABLED(CONFIG_USBC_PPC_SBU))
ppc_set_sbu(port, 0);
}
static void pd_send_hard_reset(int port)
{
task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_SEND_HARD_RESET, 0);
}
#ifdef CONFIG_USBC_PPC
static uint32_t port_oc_reset_req;
static void re_enable_ports(void)
{
uint32_t ports = atomic_read_clear(&port_oc_reset_req);
while (ports) {
int port = __fls(ports);
ports &= ~BIT(port);
/*
* Let the board know that the overcurrent is
* over since we're going to attempt re-enabling
* the port.
*/
board_overcurrent_event(port, 0);
pd_send_hard_reset(port);
/*
* TODO(b/117854867): PD3.0 to send an alert message
* indicating OCP after explicit contract.
*/
}
}
DECLARE_DEFERRED(re_enable_ports);
void pd_handle_overcurrent(int port)
{
CPRINTS("C%d: overcurrent!", port);
if (IS_ENABLED(CONFIG_USB_PD_LOGGING))
pd_log_event(PD_EVENT_PS_FAULT, PD_LOG_PORT_SIZE(port, 0),
PS_FAULT_OCP, NULL);
/* No action to take if disconnected, just log. */
if (pd_is_disconnected(port))
return;
/* Keep track of the overcurrent events. */
ppc_add_oc_event(port);
/* Let the board specific code know about the OC event. */
board_overcurrent_event(port, 1);
/* Wait 1s before trying to re-enable the port. */
atomic_or(&port_oc_reset_req, BIT(port));
hook_call_deferred(&re_enable_ports_data, SECOND);
}
#endif /* CONFIG_USBC_PPC */
__maybe_unused void pd_handle_cc_overvoltage(int port)
{
pd_send_hard_reset(port);
}
__overridable int pd_board_checks(void)
{
return EC_SUCCESS;
}
__overridable int pd_check_data_swap(int port,
enum pd_data_role data_role)
{
/* Allow data swap if we are a UFP, otherwise don't allow. */
return (data_role == PD_ROLE_UFP) ? 1 : 0;
}
__overridable int pd_check_power_swap(int port)
{
/*
* Allow power swap if we are acting as a dual role device. If we are
* not acting as dual role (ex. suspended), then only allow power swap
* if we are sourcing when we could be sinking.
*/
if (pd_get_dual_role(port) == PD_DRP_TOGGLE_ON)
return 1;
else if (pd_get_power_role(port) == PD_ROLE_SOURCE)
return 1;
return 0;
}
__overridable void pd_execute_data_swap(int port,
enum pd_data_role data_role)
{
}
__overridable enum pd_dual_role_states pd_get_drp_state_in_suspend(void)
{
/* Disable dual role when going to suspend */
return PD_DRP_TOGGLE_OFF;
}
__overridable void pd_try_execute_vconn_swap(int port, int flags)
{
/*
* If partner is dual-role power and vconn swap is enabled, consider
* if vconn swapping is necessary.
*/
if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE) &&
IS_ENABLED(CONFIG_USBC_VCONN_SWAP))
pd_try_vconn_src(port);
}
__overridable int pd_is_valid_input_voltage(int mv)
{
return 1;
}
__overridable void pd_transition_voltage(int idx)
{
/* Most devices are fixed 5V output. */
}
__overridable void typec_set_source_current_limit(int p, enum tcpc_rp_value rp)
{
if (IS_ENABLED(CONFIG_USBC_PPC))
ppc_set_vbus_source_current_limit(p, rp);
}
/* ---------------- Power Data Objects (PDOs) ----------------- */
#ifndef CONFIG_USB_PD_CUSTOM_PDO
#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
PDO_FIXED_COMM_CAP)
const uint32_t pd_src_pdo[] = {
PDO_FIXED(5000, 1500, PDO_FIXED_FLAGS),
};
const int pd_src_pdo_cnt = ARRAY_SIZE(pd_src_pdo);
const uint32_t pd_src_pdo_max[] = {
PDO_FIXED(5000, 3000, PDO_FIXED_FLAGS),
};
const int pd_src_pdo_max_cnt = ARRAY_SIZE(pd_src_pdo_max);
const uint32_t pd_snk_pdo[] = {
PDO_FIXED(5000, 500, PDO_FIXED_FLAGS),
PDO_BATT(4750, PD_MAX_VOLTAGE_MV, PD_OPERATING_POWER_MW),
PDO_VAR(4750, PD_MAX_VOLTAGE_MV, PD_MAX_CURRENT_MA),
};
const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo);
#endif /* CONFIG_USB_PD_CUSTOM_PDO */
/* ----------------- Vendor Defined Messages ------------------ */
#if defined(CONFIG_USB_PE_SM) && !defined(CONFIG_USB_VPD) && \
!defined(CONFIG_USB_CTVPD)
__overridable int pd_custom_vdm(int port, int cnt, uint32_t *payload,
uint32_t **rpayload)
{
int cmd = PD_VDO_CMD(payload[0]);
uint16_t dev_id = 0;
int is_rw, is_latest;
/* make sure we have some payload */
if (cnt == 0)
return 0;
switch (cmd) {
case VDO_CMD_VERSION:
/* guarantee last byte of payload is null character */
*(payload + cnt - 1) = 0;
CPRINTF("version: %s\n", (char *)(payload+1));
break;
case VDO_CMD_READ_INFO:
case VDO_CMD_SEND_INFO:
/* copy hash */
if (cnt == 7) {
dev_id = VDO_INFO_HW_DEV_ID(payload[6]);
is_rw = VDO_INFO_IS_RW(payload[6]);
is_latest = pd_dev_store_rw_hash(
port, dev_id, payload + 1,
is_rw ? EC_IMAGE_RW : EC_IMAGE_RO);
/*
* Send update host event unless our RW hash is
* already known to be the latest update RW.
*/
if (!is_rw || !is_latest)
pd_send_host_event(PD_EVENT_UPDATE_DEVICE);
CPRINTF("DevId:%d.%d SW:%d RW:%d\n",
HW_DEV_ID_MAJ(dev_id),
HW_DEV_ID_MIN(dev_id),
VDO_INFO_SW_DBG_VER(payload[6]),
is_rw);
} else if (cnt == 6) {
/* really old devices don't have last byte */
pd_dev_store_rw_hash(port, dev_id, payload + 1,
EC_IMAGE_UNKNOWN);
}
break;
case VDO_CMD_CURRENT:
CPRINTF("Current: %dmA\n", payload[1]);
break;
case VDO_CMD_FLIP:
if (IS_ENABLED(CONFIG_USBC_SS_MUX))
usb_mux_flip(port);
break;
#ifdef CONFIG_USB_PD_LOGGING
case VDO_CMD_GET_LOG:
pd_log_recv_vdm(port, cnt, payload);
break;
#endif /* CONFIG_USB_PD_LOGGING */
}
return 0;
}
#endif /* CONFIG_USB_PE_SM && !CONFIG_USB_VPD && !CONFIG_USB_CTVPD */
__overridable bool vboot_allow_usb_pd(void)
{
return false;
}
/* VDM utility functions */
static void pd_usb_billboard_deferred(void)
{
if (IS_ENABLED(CONFIG_USB_PD_ALT_MODE) &&
!IS_ENABLED(CONFIG_USB_PD_ALT_MODE_DFP) &&
!IS_ENABLED(CONFIG_USB_PD_SIMPLE_DFP) &&
IS_ENABLED(CONFIG_USB_BOS)) {
/*
* TODO(tbroch)
* 1. Will we have multiple type-C port UFPs
* 2. Will there be other modes applicable to DFPs besides DP
*/
if (!pd_alt_mode(0, TCPC_TX_SOP, USB_SID_DISPLAYPORT))
usb_connect();
}
}
DECLARE_DEFERRED(pd_usb_billboard_deferred);
#ifdef CONFIG_USB_PD_DISCHARGE
static void gpio_discharge_vbus(int port, int enable)
{
#ifdef CONFIG_USB_PD_DISCHARGE_GPIO
enum gpio_signal dischg_gpio[] = {
GPIO_USB_C0_DISCHARGE,
#if CONFIG_USB_PD_PORT_MAX_COUNT > 1
GPIO_USB_C1_DISCHARGE,
#endif
#if CONFIG_USB_PD_PORT_MAX_COUNT > 2
GPIO_USB_C2_DISCHARGE,
#endif
};
BUILD_ASSERT(ARRAY_SIZE(dischg_gpio) == CONFIG_USB_PD_PORT_MAX_COUNT);
gpio_set_level(dischg_gpio[port], enable);
#endif /* CONFIG_USB_PD_DISCHARGE_GPIO */
}
void pd_set_vbus_discharge(int port, int enable)
{
static struct mutex discharge_lock[CONFIG_USB_PD_PORT_MAX_COUNT];
if (port >= board_get_usb_pd_port_count())
return;
mutex_lock(&discharge_lock[port]);
enable &= !board_vbus_source_enabled(port);
if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE_GPIO))
gpio_discharge_vbus(port, enable);
else if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE_TCPC))
tcpc_discharge_vbus(port, enable);
else if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE_PPC))
ppc_discharge_vbus(port, enable);
mutex_unlock(&discharge_lock[port]);
}
#endif /* CONFIG_USB_PD_DISCHARGE */
#ifdef CONFIG_USB_PD_TCPM_TCPCI
static uint32_t pd_ports_to_resume;
static void resume_pd_port(void)
{
uint32_t port;
uint32_t suspended_ports = atomic_read_clear(&pd_ports_to_resume);
while (suspended_ports) {
port = __builtin_ctz(suspended_ports);
suspended_ports &= ~BIT(port);
pd_set_suspend(port, 0);
}
}
DECLARE_DEFERRED(resume_pd_port);
void pd_deferred_resume(int port)
{
atomic_or(&pd_ports_to_resume, 1 << port);
hook_call_deferred(&resume_pd_port_data, 5 * SECOND);
}
#endif /* CONFIG_USB_PD_TCPM_TCPCI */
/*
* Check the specified Vbus level
*
* Note that boards may override this function if they have a method outside the
* TCPCI driver to verify vSafe0V.
*/
__overridable bool pd_check_vbus_level(int port, enum vbus_level level)
{
if (IS_ENABLED(CONFIG_USB_PD_VBUS_DETECT_TCPC))
return tcpm_check_vbus_level(port, level);
else if (level == VBUS_PRESENT)
return pd_snk_is_vbus_provided(port);
else
return !pd_snk_is_vbus_provided(port);
}
int pd_is_vbus_present(int port)
{
return pd_check_vbus_level(port, VBUS_PRESENT);
}
#ifdef CONFIG_USB_PD_FRS
__overridable int board_pd_set_frs_enable(int port, int enable)
{
return EC_SUCCESS;
}
int pd_set_frs_enable(int port, int enable)
{
int rv = EC_SUCCESS;
if (IS_ENABLED(CONFIG_USB_PD_FRS_PPC))
rv = ppc_set_frs_enable(port, enable);
if (rv == EC_SUCCESS && IS_ENABLED(CONFIG_USB_PD_FRS_TCPC))
rv = tcpm_set_frs_enable(port, enable);
if (rv == EC_SUCCESS)
rv = board_pd_set_frs_enable(port, enable);
return rv;
}
#endif /* defined(CONFIG_USB_PD_FRS) */
#ifdef CONFIG_CMD_TCPC_DUMP
/*
* Dump TCPC registers.
*/
void tcpc_dump_registers(int port, const struct tcpc_reg_dump_map *reg,
int count)
{
int i, val;
for (i = 0; i < count; i++, reg++) {
switch (reg->size) {
case 1:
tcpc_read(port, reg->addr, &val);
ccprintf(" %-30s(0x%02x) = 0x%02x\n",
reg->name, reg->addr, (uint8_t)val);
break;
case 2:
tcpc_read16(port, reg->addr, &val);
ccprintf(" %-30s(0x%02x) = 0x%04x\n",
reg->name, reg->addr, (uint16_t)val);
break;
}
cflush();
}
}
static int command_tcpc_dump(int argc, char **argv)
{
int port;
if (argc < 2)
return EC_ERROR_PARAM_COUNT;
port = atoi(argv[1]);
if ((port < 0) || (port >= board_get_usb_pd_port_count())) {
CPRINTS("%s(%d) Invalid port!", __func__, port);
return EC_ERROR_INVAL;
}
/* Dump TCPC registers. */
tcpm_dump_registers(port);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(tcpci_dump, command_tcpc_dump, "<Type-C port>",
"dump the TCPC regs");
#endif /* defined(CONFIG_CMD_TCPC_DUMP) */
int pd_build_alert_msg(uint32_t *msg, uint32_t *len, enum pd_power_role pr)
{
if (msg == NULL || len == NULL)
return EC_ERROR_INVAL;
/*
* SOURCE: currently only supports OCP
* SINK: currently only supports OVP
*/
if (pr == PD_ROLE_SOURCE)
*msg = ADO_OCP_EVENT;
else
*msg = ADO_OVP_EVENT;
/* Alert data is 4 bytes */
*len = 4;
return EC_SUCCESS;
}
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