linux/drivers/usb/chipidea/otg_fsm.h
Nishad Kamdar d9958306d4
USB: chipidea: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style in
header files related to ChipIdea Highspeed Dual Role Controller.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used).

Changes made by using a script provided by Joe Perches here:
https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flkml.org%2Flkml%2F2019%2F2%2F7%2F46&data=02%7C01%7CPeter.Chen%40nxp.com%7Cbea69ff84b574ca6b48e08d7c8cf58cf%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637198665199494622&sdata=bk1n4%2BvnrfRS6ZDrps%2BuXiImdzaxKZ00YskBg6pjtn4%3D&reserved=0.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
2020-03-16 11:13:47 +08:00

102 lines
2.5 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2014 Freescale Semiconductor, Inc.
*
* Author: Jun Li
*/
#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_AIDL_BDIS (20) /* 4ms ~ 150ms, section 5.2.1 */
#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);
#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 */