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/*
* 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 <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 (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);
#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)
{
}
#endif
#endif /* __DRIVERS_USB_CHIPIDEA_OTG_FSM_H */
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