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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/usb/chipidea/otg_fsm.h
2 * Copyright (C) 2014 Freescale Semiconductor, Inc.
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.
11 #ifndef __DRIVERS_USB_CHIPIDEA_OTG_FSM_H
12 #define __DRIVERS_USB_CHIPIDEA_OTG_FSM_H
14 #include <linux/usb/otg-fsm.h>
17 * A-DEVICE timing constants
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
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
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
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
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
47 * B-device timing constants
50 /* Data-Line Pulse Time*/
51 #define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms
55 #define TB_SRP_FAIL (6000) /* b_srp_init,fail time 5~6s
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 */
65 #define TB_AIDL_BDIS (20) /* 4ms ~ 150ms, section 5.2.1 */
67 #if IS_ENABLED(CONFIG_USB_OTG_FSM)
69 int ci_hdrc_otg_fsm_init(struct ci_hdrc
*ci
);
70 int ci_otg_fsm_work(struct ci_hdrc
*ci
);
71 irqreturn_t
ci_otg_fsm_irq(struct ci_hdrc
*ci
);
72 void ci_hdrc_otg_fsm_start(struct ci_hdrc
*ci
);
73 void ci_hdrc_otg_fsm_remove(struct ci_hdrc
*ci
);
77 static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc
*ci
)
82 static inline int ci_otg_fsm_work(struct ci_hdrc
*ci
)
87 static inline irqreturn_t
ci_otg_fsm_irq(struct ci_hdrc
*ci
)
92 static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc
*ci
)
97 static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc
*ci
)
104 #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */