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57677be5 LJ |
1 | /* |
2 | * Copyright (C) 2014 Freescale Semiconductor, Inc. | |
3 | * | |
4 | * Author: Jun Li | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #ifndef __DRIVERS_USB_CHIPIDEA_OTG_FSM_H | |
12 | #define __DRIVERS_USB_CHIPIDEA_OTG_FSM_H | |
13 | ||
14 | #include <linux/usb/otg-fsm.h> | |
15 | ||
e287b67b LJ |
16 | /* |
17 | * A-DEVICE timing constants | |
18 | */ | |
19 | ||
20 | /* Wait for VBUS Rise */ | |
21 | #define TA_WAIT_VRISE (100) /* a_wait_vrise: section 7.1.2 | |
22 | * a_wait_vrise_tmr: section 7.4.5.1 | |
23 | * TA_VBUS_RISE <= 100ms, section 4.4 | |
24 | * Table 4-1: Electrical Characteristics | |
25 | * ->DC Electrical Timing | |
26 | */ | |
27 | /* Wait for VBUS Fall */ | |
28 | #define TA_WAIT_VFALL (1000) /* a_wait_vfall: section 7.1.7 | |
29 | * a_wait_vfall_tmr: section: 7.4.5.2 | |
30 | */ | |
31 | /* Wait for B-Connect */ | |
32 | #define TA_WAIT_BCON (10000) /* a_wait_bcon: section 7.1.3 | |
33 | * TA_WAIT_BCON: should be between 1100 | |
34 | * and 30000 ms, section 5.5, Table 5-1 | |
35 | */ | |
36 | /* A-Idle to B-Disconnect */ | |
37 | #define TA_AIDL_BDIS (5000) /* a_suspend min 200 ms, section 5.2.1 | |
38 | * TA_AIDL_BDIS: section 5.5, Table 5-1 | |
39 | */ | |
40 | /* B-Idle to A-Disconnect */ | |
41 | #define TA_BIDL_ADIS (500) /* TA_BIDL_ADIS: section 5.2.1 | |
42 | * 500ms is used for B switch to host | |
43 | * for safe | |
44 | */ | |
45 | ||
46 | /* | |
47 | * B-device timing constants | |
48 | */ | |
49 | ||
50 | /* Data-Line Pulse Time*/ | |
51 | #define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms | |
52 | * section:5.1.3 | |
53 | */ | |
54 | /* SRP Fail Time */ | |
55 | #define TB_SRP_FAIL (6000) /* b_srp_init,fail time 5~6s | |
56 | * section:5.1.6 | |
57 | */ | |
58 | /* A-SE0 to B-Reset */ | |
59 | #define TB_ASE0_BRST (155) /* minimum 155 ms, section:5.3.1 */ | |
60 | /* SE0 Time Before SRP */ | |
61 | #define TB_SE0_SRP (1000) /* b_idle,minimum 1s, section:5.1.2 */ | |
62 | /* SSEND time before SRP */ | |
63 | #define TB_SSEND_SRP (1500) /* minimum 1.5 sec, section:5.1.2 */ | |
64 | ||
cf4f2193 | 65 | #if IS_ENABLED(CONFIG_USB_OTG_FSM) |
57677be5 LJ |
66 | |
67 | int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci); | |
4dcf720c LJ |
68 | int ci_otg_fsm_work(struct ci_hdrc *ci); |
69 | irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci); | |
70 | void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci); | |
15f75def | 71 | void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci); |
57677be5 LJ |
72 | |
73 | #else | |
74 | ||
75 | static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci) | |
76 | { | |
77 | return 0; | |
78 | } | |
79 | ||
4dcf720c LJ |
80 | static inline int ci_otg_fsm_work(struct ci_hdrc *ci) |
81 | { | |
82 | return -ENXIO; | |
83 | } | |
84 | ||
85 | static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci) | |
86 | { | |
87 | return IRQ_NONE; | |
88 | } | |
89 | ||
90 | static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci) | |
91 | { | |
92 | ||
93 | } | |
94 | ||
15f75def LJ |
95 | static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci) |
96 | { | |
97 | ||
98 | } | |
99 | ||
57677be5 LJ |
100 | #endif |
101 | ||
102 | #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */ |