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git01.mediatek.com / filogic / uboot / bac0f49346d8b56c4fb00ab330676cf9949e40a9 / . / drivers / usb / tcpm / tcpm-internal.h
blob: 561442090027b5740025ebde7c38f8e92ebd1665 [file] [log] [blame]
Sebastian Reichel3dd23322024-10-15 17:26:43 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright 2015-2017 Google, Inc
4 * Copyright 2024 Collabora
5 */
6
7#ifndef __LINUX_USB_TCPM_INTERNAL_H
8#define __LINUX_USB_TCPM_INTERNAL_H
9
10#define FOREACH_TCPM_STATE(S) \
11 S(INVALID_STATE), \
12 S(TOGGLING), \
13 S(SRC_UNATTACHED), \
14 S(SRC_ATTACH_WAIT), \
15 S(SRC_ATTACHED), \
16 S(SRC_STARTUP), \
17 S(SRC_SEND_CAPABILITIES), \
18 S(SRC_SEND_CAPABILITIES_TIMEOUT), \
19 S(SRC_NEGOTIATE_CAPABILITIES), \
20 S(SRC_TRANSITION_SUPPLY), \
21 S(SRC_READY), \
22 S(SRC_WAIT_NEW_CAPABILITIES), \
23 \
24 S(SNK_UNATTACHED), \
25 S(SNK_ATTACH_WAIT), \
26 S(SNK_DEBOUNCED), \
27 S(SNK_ATTACHED), \
28 S(SNK_STARTUP), \
29 S(SNK_DISCOVERY), \
30 S(SNK_DISCOVERY_DEBOUNCE), \
31 S(SNK_DISCOVERY_DEBOUNCE_DONE), \
32 S(SNK_WAIT_CAPABILITIES), \
33 S(SNK_NEGOTIATE_CAPABILITIES), \
34 S(SNK_TRANSITION_SINK), \
35 S(SNK_TRANSITION_SINK_VBUS), \
36 S(SNK_READY), \
37 \
38 S(HARD_RESET_SEND), \
39 S(HARD_RESET_START), \
40 S(SRC_HARD_RESET_VBUS_OFF), \
41 S(SRC_HARD_RESET_VBUS_ON), \
42 S(SNK_HARD_RESET_SINK_OFF), \
43 S(SNK_HARD_RESET_WAIT_VBUS), \
44 S(SNK_HARD_RESET_SINK_ON), \
45 \
46 S(SOFT_RESET), \
47 S(SOFT_RESET_SEND), \
48 \
49 S(DR_SWAP_ACCEPT), \
50 S(DR_SWAP_CHANGE_DR), \
51 \
52 S(ERROR_RECOVERY), \
53 S(PORT_RESET), \
54 S(PORT_RESET_WAIT_OFF)
55
56#define GENERATE_TCPM_ENUM(e) e
57#define GENERATE_TCPM_STRING(s) #s
58#define TCPM_POLL_EVENT_TIME_OUT 2000
59
60enum tcpm_state {
61 FOREACH_TCPM_STATE(GENERATE_TCPM_ENUM)
62};
63
64enum pd_msg_request {
65 PD_MSG_NONE = 0,
66 PD_MSG_CTRL_REJECT,
67 PD_MSG_CTRL_WAIT,
68 PD_MSG_CTRL_NOT_SUPP,
69 PD_MSG_DATA_SINK_CAP,
70 PD_MSG_DATA_SOURCE_CAP,
71};
72
73struct tcpm_port {
74 enum typec_port_type typec_type;
75 int typec_prefer_role;
76
77 enum typec_role vconn_role;
78 enum typec_role pwr_role;
79 enum typec_data_role data_role;
80
81 struct typec_partner *partner;
82
83 enum typec_cc_status cc_req;
84 enum typec_cc_status cc1;
85 enum typec_cc_status cc2;
86 enum typec_cc_polarity polarity;
87
88 bool attached;
89 bool connected;
90 int poll_event_cnt;
91 enum typec_port_type port_type;
92
93 /*
94 * Set to true when vbus is greater than VSAFE5V min.
95 * Set to false when vbus falls below vSinkDisconnect max threshold.
96 */
97 bool vbus_present;
98
99 /*
100 * Set to true when vbus is less than VSAFE0V max.
101 * Set to false when vbus is greater than VSAFE0V max.
102 */
103 bool vbus_vsafe0v;
104
105 bool vbus_never_low;
106 bool vbus_source;
107 bool vbus_charge;
108
109 int try_role;
110
111 enum pd_msg_request queued_message;
112
113 enum tcpm_state enter_state;
114 enum tcpm_state prev_state;
115 enum tcpm_state state;
116 enum tcpm_state delayed_state;
117 unsigned long delay_ms;
118
119 bool state_machine_running;
120
121 bool tx_complete;
122 enum tcpm_transmit_status tx_status;
123
124 unsigned int negotiated_rev;
125 unsigned int message_id;
126 unsigned int caps_count;
127 unsigned int hard_reset_count;
128 bool pd_capable;
129 bool explicit_contract;
130 unsigned int rx_msgid;
131
132 /* Partner capabilities/requests */
133 u32 sink_request;
134 u32 source_caps[PDO_MAX_OBJECTS];
135 unsigned int nr_source_caps;
136 u32 sink_caps[PDO_MAX_OBJECTS];
137 unsigned int nr_sink_caps;
138
139 /*
140 * whether to wait for the Type-C device to send the DR_SWAP Message flag
141 * For Type-C device with Dual-Role Power and Dual-Role Data, the port side
142 * is used as sink + ufp, then the tcpm framework needs to wait for Type-C
143 * device to initiate DR_swap Message.
144 */
145 bool wait_dr_swap_message;
146
147 /* Local capabilities */
148 u32 src_pdo[PDO_MAX_OBJECTS];
149 unsigned int nr_src_pdo;
150 u32 snk_pdo[PDO_MAX_OBJECTS];
151 unsigned int nr_snk_pdo;
152
153 unsigned int operating_snk_mw;
154 bool update_sink_caps;
155
156 /* Requested current / voltage to the port partner */
157 u32 req_current_limit;
158 u32 req_supply_voltage;
159 /* Actual current / voltage limit of the local port */
160 u32 current_limit;
161 u32 supply_voltage;
162
163 /* port belongs to a self powered device */
164 bool self_powered;
165
166 unsigned long delay_target;
167};
168
169extern const char * const tcpm_states[];
170
171int tcpm_post_probe(struct udevice *dev);
172
173#endif