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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
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2 | /* |
3 | * Copyright (C) 2014 Freescale Semiconductor, Inc. | |
4 | * | |
5 | * Author: Jun Li | |
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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 | ||
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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 | ||
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62 | #define TB_AIDL_BDIS (20) /* 4ms ~ 150ms, section 5.2.1 */ |
63 | ||
cf4f2193 | 64 | #if IS_ENABLED(CONFIG_USB_OTG_FSM) |
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65 | |
66 | int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci); | |
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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); | |
15f75def | 70 | void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci); |
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71 | |
72 | #else | |
73 | ||
74 | static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci) | |
75 | { | |
76 | return 0; | |
77 | } | |
78 | ||
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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 | ||
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94 | static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci) |
95 | { | |
96 | ||
97 | } | |
98 | ||
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99 | #endif |
100 | ||
101 | #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */ |