1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2014 Freescale Semiconductor, Inc.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Jun Li
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #ifndef __DRIVERS_USB_CHIPIDEA_OTG_FSM_H
9*4882a593Smuzhiyun #define __DRIVERS_USB_CHIPIDEA_OTG_FSM_H
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <linux/usb/otg-fsm.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun /*
14*4882a593Smuzhiyun * A-DEVICE timing constants
15*4882a593Smuzhiyun */
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun /* Wait for VBUS Rise */
18*4882a593Smuzhiyun #define TA_WAIT_VRISE (100) /* a_wait_vrise: section 7.1.2
19*4882a593Smuzhiyun * a_wait_vrise_tmr: section 7.4.5.1
20*4882a593Smuzhiyun * TA_VBUS_RISE <= 100ms, section 4.4
21*4882a593Smuzhiyun * Table 4-1: Electrical Characteristics
22*4882a593Smuzhiyun * ->DC Electrical Timing
23*4882a593Smuzhiyun */
24*4882a593Smuzhiyun /* Wait for VBUS Fall */
25*4882a593Smuzhiyun #define TA_WAIT_VFALL (1000) /* a_wait_vfall: section 7.1.7
26*4882a593Smuzhiyun * a_wait_vfall_tmr: section: 7.4.5.2
27*4882a593Smuzhiyun */
28*4882a593Smuzhiyun /* Wait for B-Connect */
29*4882a593Smuzhiyun #define TA_WAIT_BCON (10000) /* a_wait_bcon: section 7.1.3
30*4882a593Smuzhiyun * TA_WAIT_BCON: should be between 1100
31*4882a593Smuzhiyun * and 30000 ms, section 5.5, Table 5-1
32*4882a593Smuzhiyun */
33*4882a593Smuzhiyun /* A-Idle to B-Disconnect */
34*4882a593Smuzhiyun #define TA_AIDL_BDIS (5000) /* a_suspend min 200 ms, section 5.2.1
35*4882a593Smuzhiyun * TA_AIDL_BDIS: section 5.5, Table 5-1
36*4882a593Smuzhiyun */
37*4882a593Smuzhiyun /* B-Idle to A-Disconnect */
38*4882a593Smuzhiyun #define TA_BIDL_ADIS (500) /* TA_BIDL_ADIS: section 5.2.1
39*4882a593Smuzhiyun * 500ms is used for B switch to host
40*4882a593Smuzhiyun * for safe
41*4882a593Smuzhiyun */
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun /*
44*4882a593Smuzhiyun * B-device timing constants
45*4882a593Smuzhiyun */
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun /* Data-Line Pulse Time*/
48*4882a593Smuzhiyun #define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms
49*4882a593Smuzhiyun * section:5.1.3
50*4882a593Smuzhiyun */
51*4882a593Smuzhiyun /* SRP Fail Time */
52*4882a593Smuzhiyun #define TB_SRP_FAIL (6000) /* b_srp_init,fail time 5~6s
53*4882a593Smuzhiyun * section:5.1.6
54*4882a593Smuzhiyun */
55*4882a593Smuzhiyun /* A-SE0 to B-Reset */
56*4882a593Smuzhiyun #define TB_ASE0_BRST (155) /* minimum 155 ms, section:5.3.1 */
57*4882a593Smuzhiyun /* SE0 Time Before SRP */
58*4882a593Smuzhiyun #define TB_SE0_SRP (1000) /* b_idle,minimum 1s, section:5.1.2 */
59*4882a593Smuzhiyun /* SSEND time before SRP */
60*4882a593Smuzhiyun #define TB_SSEND_SRP (1500) /* minimum 1.5 sec, section:5.1.2 */
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun #define TB_AIDL_BDIS (20) /* 4ms ~ 150ms, section 5.2.1 */
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_USB_OTG_FSM)
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci);
67*4882a593Smuzhiyun int ci_otg_fsm_work(struct ci_hdrc *ci);
68*4882a593Smuzhiyun irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci);
69*4882a593Smuzhiyun void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci);
70*4882a593Smuzhiyun void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci);
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun #else
73*4882a593Smuzhiyun
ci_hdrc_otg_fsm_init(struct ci_hdrc * ci)74*4882a593Smuzhiyun static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci)
75*4882a593Smuzhiyun {
76*4882a593Smuzhiyun return 0;
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun
ci_otg_fsm_work(struct ci_hdrc * ci)79*4882a593Smuzhiyun static inline int ci_otg_fsm_work(struct ci_hdrc *ci)
80*4882a593Smuzhiyun {
81*4882a593Smuzhiyun return -ENXIO;
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
ci_otg_fsm_irq(struct ci_hdrc * ci)84*4882a593Smuzhiyun static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun return IRQ_NONE;
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
ci_hdrc_otg_fsm_start(struct ci_hdrc * ci)89*4882a593Smuzhiyun static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci)
90*4882a593Smuzhiyun {
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun }
93*4882a593Smuzhiyun
ci_hdrc_otg_fsm_remove(struct ci_hdrc * ci)94*4882a593Smuzhiyun static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci)
95*4882a593Smuzhiyun {
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun #endif
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */
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