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 #if IS_ENABLED(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 75 static inline int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci) 76 { 77 return 0; 78 } 79 80 static inline int ci_otg_fsm_work(struct ci_hdrc *ci) 81 { 82 return -ENXIO; 83 } 84 85 static inline irqreturn_t ci_otg_fsm_irq(struct ci_hdrc *ci) 86 { 87 return IRQ_NONE; 88 } 89 90 static inline void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci) 91 { 92 93 } 94 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