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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright 2015-2017 Google, Inc
* Copyright 2024 Collabora
*/
#ifndef __LINUX_USB_TCPM_INTERNAL_H
#define __LINUX_USB_TCPM_INTERNAL_H
#define FOREACH_TCPM_STATE(S) \
S(INVALID_STATE), \
S(TOGGLING), \
S(SRC_UNATTACHED), \
S(SRC_ATTACH_WAIT), \
S(SRC_ATTACHED), \
S(SRC_STARTUP), \
S(SRC_SEND_CAPABILITIES), \
S(SRC_SEND_CAPABILITIES_TIMEOUT), \
S(SRC_NEGOTIATE_CAPABILITIES), \
S(SRC_TRANSITION_SUPPLY), \
S(SRC_READY), \
S(SRC_WAIT_NEW_CAPABILITIES), \
\
S(SNK_UNATTACHED), \
S(SNK_ATTACH_WAIT), \
S(SNK_DEBOUNCED), \
S(SNK_ATTACHED), \
S(SNK_STARTUP), \
S(SNK_DISCOVERY), \
S(SNK_DISCOVERY_DEBOUNCE), \
S(SNK_DISCOVERY_DEBOUNCE_DONE), \
S(SNK_WAIT_CAPABILITIES), \
S(SNK_NEGOTIATE_CAPABILITIES), \
S(SNK_TRANSITION_SINK), \
S(SNK_TRANSITION_SINK_VBUS), \
S(SNK_READY), \
\
S(HARD_RESET_SEND), \
S(HARD_RESET_START), \
S(SRC_HARD_RESET_VBUS_OFF), \
S(SRC_HARD_RESET_VBUS_ON), \
S(SNK_HARD_RESET_SINK_OFF), \
S(SNK_HARD_RESET_WAIT_VBUS), \
S(SNK_HARD_RESET_SINK_ON), \
\
S(SOFT_RESET), \
S(SOFT_RESET_SEND), \
\
S(DR_SWAP_ACCEPT), \
S(DR_SWAP_CHANGE_DR), \
\
S(ERROR_RECOVERY), \
S(PORT_RESET), \
S(PORT_RESET_WAIT_OFF)
#define GENERATE_TCPM_ENUM(e) e
#define GENERATE_TCPM_STRING(s) #s
#define TCPM_POLL_EVENT_TIME_OUT 2000
enum tcpm_state {
FOREACH_TCPM_STATE(GENERATE_TCPM_ENUM)
};
enum pd_msg_request {
PD_MSG_NONE = 0,
PD_MSG_CTRL_REJECT,
PD_MSG_CTRL_WAIT,
PD_MSG_CTRL_NOT_SUPP,
PD_MSG_DATA_SINK_CAP,
PD_MSG_DATA_SOURCE_CAP,
};
struct tcpm_port {
enum typec_port_type typec_type;
int typec_prefer_role;
enum typec_role vconn_role;
enum typec_role pwr_role;
enum typec_data_role data_role;
struct typec_partner *partner;
enum typec_cc_status cc_req;
enum typec_cc_status cc1;
enum typec_cc_status cc2;
enum typec_cc_polarity polarity;
bool attached;
bool connected;
int poll_event_cnt;
enum typec_port_type port_type;
/*
* Set to true when vbus is greater than VSAFE5V min.
* Set to false when vbus falls below vSinkDisconnect max threshold.
*/
bool vbus_present;
/*
* Set to true when vbus is less than VSAFE0V max.
* Set to false when vbus is greater than VSAFE0V max.
*/
bool vbus_vsafe0v;
bool vbus_never_low;
bool vbus_source;
bool vbus_charge;
int try_role;
enum pd_msg_request queued_message;
enum tcpm_state enter_state;
enum tcpm_state prev_state;
enum tcpm_state state;
enum tcpm_state delayed_state;
unsigned long delay_ms;
bool state_machine_running;
bool tx_complete;
enum tcpm_transmit_status tx_status;
unsigned int negotiated_rev;
unsigned int message_id;
unsigned int caps_count;
unsigned int hard_reset_count;
bool pd_capable;
bool explicit_contract;
unsigned int rx_msgid;
/* Partner capabilities/requests */
u32 sink_request;
u32 source_caps[PDO_MAX_OBJECTS];
unsigned int nr_source_caps;
u32 sink_caps[PDO_MAX_OBJECTS];
unsigned int nr_sink_caps;
/*
* whether to wait for the Type-C device to send the DR_SWAP Message flag
* For Type-C device with Dual-Role Power and Dual-Role Data, the port side
* is used as sink + ufp, then the tcpm framework needs to wait for Type-C
* device to initiate DR_swap Message.
*/
bool wait_dr_swap_message;
/* Local capabilities */
u32 src_pdo[PDO_MAX_OBJECTS];
unsigned int nr_src_pdo;
u32 snk_pdo[PDO_MAX_OBJECTS];
unsigned int nr_snk_pdo;
unsigned int operating_snk_mw;
bool update_sink_caps;
/* Requested current / voltage to the port partner */
u32 req_current_limit;
u32 req_supply_voltage;
/* Actual current / voltage limit of the local port */
u32 current_limit;
u32 supply_voltage;
/* port belongs to a self powered device */
bool self_powered;
unsigned long delay_target;
};
extern const char * const tcpm_states[];
int tcpm_post_probe(struct udevice *dev);
#endif
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