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
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 #ifdef CONFIG_USB_OTG_FSM
66
67 int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci);
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);
71 void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci);
72
73 #else
74
ci_hdrc_otg_fsm_init(struct ci_hdrc * ci)75 static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci)
76 {
77 return 0;
78 }
79
ci_otg_fsm_work(struct ci_hdrc * ci)80 static inline int ci_otg_fsm_work(struct ci_hdrc *ci)
81 {
82 return -ENXIO;
83 }
84
ci_otg_fsm_irq(struct ci_hdrc * ci)85 static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci)
86 {
87 return IRQ_NONE;
88 }
89
ci_hdrc_otg_fsm_start(struct ci_hdrc * ci)90 static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci)
91 {
92
93 }
94
ci_hdrc_otg_fsm_remove(struct ci_hdrc * ci)95 static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci)
96 {
97
98 }
99
100 #endif
101
102 #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */
103