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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 | ||
65 | #define TB_SESS_VLD (1000) | |
66 | ||
826cfe75 LJ |
67 | enum ci_otg_fsm_timer_index { |
68 | /* | |
69 | * CI specific timers, start from the end | |
70 | * of standard and auxiliary OTG timers | |
71 | */ | |
72 | B_DATA_PLS = NUM_OTG_FSM_TIMERS, | |
73 | B_SSEND_SRP, | |
74 | B_SESS_VLD, | |
75 | ||
76 | NUM_CI_OTG_FSM_TIMERS, | |
77 | }; | |
78 | ||
79 | struct ci_otg_fsm_timer { | |
80 | unsigned long expires; /* Number of count increase to timeout */ | |
81 | unsigned long count; /* Tick counter */ | |
82 | void (*function)(void *, unsigned long); /* Timeout function */ | |
83 | unsigned long data; /* Data passed to function */ | |
84 | struct list_head list; | |
85 | }; | |
86 | ||
87 | struct ci_otg_fsm_timer_list { | |
88 | struct ci_otg_fsm_timer *timer_list[NUM_CI_OTG_FSM_TIMERS]; | |
89 | struct list_head active_timers; | |
90 | }; | |
91 | ||
57677be5 LJ |
92 | #ifdef CONFIG_USB_OTG_FSM |
93 | ||
94 | int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci); | |
4dcf720c LJ |
95 | int ci_otg_fsm_work(struct ci_hdrc *ci); |
96 | irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci); | |
97 | void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci); | |
15f75def | 98 | void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci); |
57677be5 LJ |
99 | |
100 | #else | |
101 | ||
102 | static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci) | |
103 | { | |
104 | return 0; | |
105 | } | |
106 | ||
4dcf720c LJ |
107 | static inline int ci_otg_fsm_work(struct ci_hdrc *ci) |
108 | { | |
109 | return -ENXIO; | |
110 | } | |
111 | ||
112 | static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci) | |
113 | { | |
114 | return IRQ_NONE; | |
115 | } | |
116 | ||
117 | static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci) | |
118 | { | |
119 | ||
120 | } | |
121 | ||
15f75def LJ |
122 | static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci) |
123 | { | |
124 | ||
125 | } | |
126 | ||
57677be5 LJ |
127 | #endif |
128 | ||
129 | #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */ |