1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (C) 2014 Freescale Semiconductor, Inc. |
4 | * |
5 | * Author: Jun Li |
6 | */ |
7 | |
8 | #ifndef __DRIVERS_USB_CHIPIDEA_OTG_FSM_H |
9 | #define __DRIVERS_USB_CHIPIDEA_OTG_FSM_H |
10 | |
11 | #include <linux/usb/otg-fsm.h> |
12 | |
13 | /* |
14 | * A-DEVICE timing constants |
15 | */ |
16 | |
17 | /* Wait for VBUS Rise */ |
18 | #define TA_WAIT_VRISE (100) /* a_wait_vrise: section 7.1.2 |
19 | * a_wait_vrise_tmr: section 7.4.5.1 |
20 | * TA_VBUS_RISE <= 100ms, section 4.4 |
21 | * Table 4-1: Electrical Characteristics |
22 | * ->DC Electrical Timing |
23 | */ |
24 | /* Wait for VBUS Fall */ |
25 | #define TA_WAIT_VFALL (1000) /* a_wait_vfall: section 7.1.7 |
26 | * a_wait_vfall_tmr: section: 7.4.5.2 |
27 | */ |
28 | /* Wait for B-Connect */ |
29 | #define TA_WAIT_BCON (10000) /* a_wait_bcon: section 7.1.3 |
30 | * TA_WAIT_BCON: should be between 1100 |
31 | * and 30000 ms, section 5.5, Table 5-1 |
32 | */ |
33 | /* A-Idle to B-Disconnect */ |
34 | #define TA_AIDL_BDIS (5000) /* a_suspend min 200 ms, section 5.2.1 |
35 | * TA_AIDL_BDIS: section 5.5, Table 5-1 |
36 | */ |
37 | /* B-Idle to A-Disconnect */ |
38 | #define TA_BIDL_ADIS (500) /* TA_BIDL_ADIS: section 5.2.1 |
39 | * 500ms is used for B switch to host |
40 | * for safe |
41 | */ |
42 | |
43 | /* |
44 | * B-device timing constants |
45 | */ |
46 | |
47 | /* Data-Line Pulse Time*/ |
48 | #define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms |
49 | * section:5.1.3 |
50 | */ |
51 | /* SRP Fail Time */ |
52 | #define TB_SRP_FAIL (6000) /* b_srp_init,fail time 5~6s |
53 | * section:5.1.6 |
54 | */ |
55 | /* A-SE0 to B-Reset */ |
56 | #define TB_ASE0_BRST (155) /* minimum 155 ms, section:5.3.1 */ |
57 | /* SE0 Time Before SRP */ |
58 | #define TB_SE0_SRP (1000) /* b_idle,minimum 1s, section:5.1.2 */ |
59 | /* SSEND time before SRP */ |
60 | #define TB_SSEND_SRP (1500) /* minimum 1.5 sec, section:5.1.2 */ |
61 | |
62 | #define TB_AIDL_BDIS (20) /* 4ms ~ 150ms, section 5.2.1 */ |
63 | |
64 | #if IS_ENABLED(CONFIG_USB_OTG_FSM) |
65 | |
66 | int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci); |
67 | int ci_otg_fsm_work(struct ci_hdrc *ci); |
68 | irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci); |
69 | void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci); |
70 | void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci); |
71 | |
72 | #else |
73 | |
74 | static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci) |
75 | { |
76 | return 0; |
77 | } |
78 | |
79 | static inline int ci_otg_fsm_work(struct ci_hdrc *ci) |
80 | { |
81 | return -ENXIO; |
82 | } |
83 | |
84 | static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci) |
85 | { |
86 | return IRQ_NONE; |
87 | } |
88 | |
89 | static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci) |
90 | { |
91 | |
92 | } |
93 | |
94 | static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci) |
95 | { |
96 | |
97 | } |
98 | |
99 | #endif |
100 | |
101 | #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */ |
102 | |