| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2014-2015 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 <linux/usb/otg-fsm.h> |
| |
| /* |
| * 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 (500) /* 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 (160) /* TA_BIDL_ADIS: section 5.2.1 |
| * 155ms ~ 200 ms |
| */ |
| |
| #define TA_DP_END (200) |
| #define TA_TST_MAINT (9900) /* OTG test device session maintain |
| * timer, 9.9s~10.1s |
| */ |
| |
| /* |
| * 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_AIDL_BDIS (20) /* 4ms ~ 150ms, section 5.2.1 */ |
| #define TB_SRP_REQD (2000) /* For otg_srp_reqd to start data |
| * pulse after A(PET) turn off v-bus |
| */ |
| |
| #define TB_TST_SUSP (20) /* B-dev hand host role back to A-dev |
| * via suspend bus after set config. |
| * max: 100ms |
| */ |
| |
| #if IS_ENABLED(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); |
| void ci_hdrc_otg_fsm_restart(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) |
| { |
| |
| } |
| |
| static inline void ci_hdrc_otg_fsm_restart(struct ci_hdrc *ci) |
| { |
| |
| } |
| |
| #endif |
| |
| #endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */ |
