/* * Copyright (C) 2014 Freescale Semiconductor, Inc. * * Author: Jun Li * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __DRIVERS_USB_CHIPIDEA_OTG_FSM_H #define __DRIVERS_USB_CHIPIDEA_OTG_FSM_H #include /* * A-DEVICE timing constants */ /* Wait for VBUS Rise */ #define TA_WAIT_VRISE (100) /* a_wait_vrise: section 7.1.2 * a_wait_vrise_tmr: section 7.4.5.1 * TA_VBUS_RISE <= 100ms, section 4.4 * Table 4-1: Electrical Characteristics * ->DC Electrical Timing */ /* Wait for VBUS Fall */ #define TA_WAIT_VFALL (1000) /* a_wait_vfall: section 7.1.7 * a_wait_vfall_tmr: section: 7.4.5.2 */ /* Wait for B-Connect */ #define TA_WAIT_BCON (10000) /* a_wait_bcon: section 7.1.3 * TA_WAIT_BCON: should be between 1100 * and 30000 ms, section 5.5, Table 5-1 */ /* A-Idle to B-Disconnect */ #define TA_AIDL_BDIS (5000) /* a_suspend min 200 ms, section 5.2.1 * TA_AIDL_BDIS: section 5.5, Table 5-1 */ /* B-Idle to A-Disconnect */ #define TA_BIDL_ADIS (500) /* TA_BIDL_ADIS: section 5.2.1 * 500ms is used for B switch to host * for safe */ /* * B-device timing constants */ /* Data-Line Pulse Time*/ #define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms * section:5.1.3 */ /* SRP Fail Time */ #define TB_SRP_FAIL (6000) /* b_srp_init,fail time 5~6s * section:5.1.6 */ /* A-SE0 to B-Reset */ #define TB_ASE0_BRST (155) /* minimum 155 ms, section:5.3.1 */ /* SE0 Time Before SRP */ #define TB_SE0_SRP (1000) /* b_idle,minimum 1s, section:5.1.2 */ /* SSEND time before SRP */ #define TB_SSEND_SRP (1500) /* minimum 1.5 sec, section:5.1.2 */ #define TB_SESS_VLD (1000) enum ci_otg_fsm_timer_index { /* * CI specific timers, start from the end * of standard and auxiliary OTG timers */ B_DATA_PLS = NUM_OTG_FSM_TIMERS, B_SSEND_SRP, B_SESS_VLD, NUM_CI_OTG_FSM_TIMERS, }; struct ci_otg_fsm_timer { unsigned long expires; /* Number of count increase to timeout */ unsigned long count; /* Tick counter */ void (*function)(void *, unsigned long); /* Timeout function */ unsigned long data; /* Data passed to function */ struct list_head list; }; struct ci_otg_fsm_timer_list { struct ci_otg_fsm_timer *timer_list[NUM_CI_OTG_FSM_TIMERS]; struct list_head active_timers; }; #ifdef CONFIG_USB_OTG_FSM int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci); int ci_otg_fsm_work(struct ci_hdrc *ci); irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci); void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci); void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci); #else static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci) { return 0; } static inline int ci_otg_fsm_work(struct ci_hdrc *ci) { return -ENXIO; } static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci) { return IRQ_NONE; } static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci) { } static inline void ci_hdrc_otg_fsm_remove(struct ci_hdrc *ci) { } #endif #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */