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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.
*/
#include "battery.h"
#include "battery_smart.h"
#include "board.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "ec_commands.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "registers.h"
#include "system.h"
#include "task.h"
#include "timer.h"
#include "util.h"
#include "usb_charge.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_prl_sm.h"
#include "tcpm.h"
#include "usb_pe_sm.h"
#include "usb_prl_sm.h"
#include "usb_sm.h"
#include "usb_tc_sm.h"
#include "version.h"
/* Include USB Type-C State Machine Header File */
#if defined(CONFIG_USB_TYPEC_CTVPD)
#include "usb_tc_ctvpd_sm.h"
#elif defined(CONFIG_USB_TYPEC_VPD)
#include "usb_tc_vpd_sm.h"
#else
#error "A USB Type-C State Machine must be defined."
#endif
#ifdef CONFIG_COMMON_RUNTIME
#define CPRINTF(format, args...) cprintf(CC_USB, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USB, format, ## args)
#else /* CONFIG_COMMON_RUNTIME */
#define CPRINTF(format, args...)
#define CPRINTS(format, args...)
#endif
#ifdef CONFIG_COMMON_RUNTIME
const char * const tc_state_names[] = {
"Disabled",
"Unattached.SNK",
"AttachWait.SNK",
"Attached.SNK",
#if !defined(CONFIG_USB_TYPEC_VPD)
"ErrorRecovery",
"Unattached.SRC",
"AttachWait.SRC",
"Attached.SRC",
#endif
#if !defined(CONFIG_USB_TYPEC_CTVPD) && !defined(CONFIG_USB_TYPEC_VPD)
"AudioAccessory",
"OrientedDebugAccessory.SRC",
"UnorientedDebugAccessory.SRC",
"DebugAccessory.SNK",
"Try.SRC",
"TryWait.SNK",
"CTUnattached.SNK",
"CTAttached.SNK",
#endif
#if defined(CONFIG_USB_TYPEC_CTVPD)
"CTTry.SNK",
"CTAttached.Unsupported",
"CTAttachWait.Unsupported",
"CTUnattached.Unsupported",
"CTUnattached.VPD",
"CTAttachWait.VPD",
"CTAttached.VPD",
"CTDisabled.VPD",
"Try.SNK",
"TryWait.SRC"
#endif
};
BUILD_ASSERT(ARRAY_SIZE(tc_state_names) == TC_STATE_COUNT);
#endif
/* Public Functions */
int tc_get_power_role(int port)
{
return tc[port].power_role;
}
int tc_get_data_role(int port)
{
return tc[port].data_role;
}
void tc_set_timeout(int port, uint64_t timeout)
{
tc[port].evt_timeout = timeout;
}
enum typec_state_id get_typec_state_id(int port)
{
return tc[port].state_id;
}
/*
* 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
*/
inline enum pd_cc_polarity_type get_snk_polarity(int cc1, int 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
*/
return (cc2 > cc1) ? POLARITY_CC2 : POLARITY_CC1;
}
int tc_restart_tcpc(int port)
{
return tcpm_init(port);
}
void set_polarity(int port, int polarity)
{
tcpm_set_polarity(port, polarity);
#ifdef CONFIG_USBC_PPC_POLARITY
ppc_set_polarity(port, polarity);
#endif /* defined(CONFIG_USBC_PPC_POLARITY) */
}
void pd_task(void *u)
{
int port = TASK_ID_TO_PD_PORT(task_get_current());
tc_state_init(port);
while (1) {
/* wait for next event/packet or timeout expiration */
tc[port].evt = task_wait_event(tc[port].evt_timeout);
/* handle events that affect the state machine as a whole */
tc_event_check(port, tc[port].evt);
#ifdef CONFIG_USB_PD_TCPC
/*
* run port controller task to check CC and/or read incoming
* messages
*/
tcpc_run(port, tc[port].evt);
#endif
#ifdef CONFIG_USB_PE_SM
/* run policy engine state machine */
policy_engine(port, tc[port].evt, tc[port].pd_enable);
#endif /* CONFIG_USB_PE_SM */
#ifdef CONFIG_USB_PRL_SM
/* run protocol state machine */
protocol_layer(port, tc[port].evt, tc[port].pd_enable);
#endif /* CONFIG_USB_PRL_SM */
/* run state machine */
exe_state(port, TC_OBJ(port), RUN_SIG);
}
}
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