FM / usb

/usr/src/linux-headers-5.15.0-190/include/linux/usb/

/usr/src/linux-headers-5.15.0-190/include/linux/usb

Name	Size	Mode	Actions
audio-v2.h	14356	0644	edit dl rm
audio-v3.h	14270	0644	edit dl rm
audio.h	1261	0644	edit dl rm
c67x00.h	1867	0644	edit dl rm
ccid.h	787	0644	edit dl rm
cdc-wdm.h	701	0644	edit dl rm
cdc.h	1517	0644	edit dl rm
cdc_ncm.h	5978	0644	edit dl rm
ch9.h	2342	0644	edit dl rm
chipidea.h	3512	0644	edit dl rm
composite.h	26172	0644	edit dl rm
ehci-dbgp.h	2099	0644	edit dl rm
ehci_def.h	8277	0644	edit dl rm
ehci_pdriver.h	2395	0644	edit dl rm
ezusb.h	286	0644	edit dl rm
functionfs.h	151	0644	edit dl rm
gadget.h	37543	0644	edit dl rm
gadget_configfs.h	3014	0644	edit dl rm
g_hid.h	1158	0644	edit dl rm
hcd.h	28343	0644	edit dl rm
input.h	716	0644	edit dl rm
iowarrior.h	1374	0644	edit dl rm
irda.h	3853	0644	edit dl rm
isp116x.h	1160	0644	edit dl rm
isp1301.h	2433	0644	edit dl rm
isp1362.h	1628	0644	edit dl rm
m66592.h	1444	0644	edit dl rm
musb-ux500.h	899	0644	edit dl rm
musb.h	3600	0644	edit dl rm
net2280.h	24120	0644	edit dl rm
of.h	1859	0644	edit dl rm
ohci_pdriver.h	1748	0644	edit dl rm
otg-fsm.h	8823	0644	edit dl rm
otg.h	3158	0644	edit dl rm
pd.h	15254	0644	edit dl rm
pd_ado.h	1191	0644	edit dl rm
pd_bdo.h	555	0644	edit dl rm
pd_ext_sdb.h	698	0644	edit dl rm
pd_vdo.h	16554	0644	edit dl rm
phy.h	8435	0644	edit dl rm
phy_companion.h	1197	0644	edit dl rm
quirks.h	2403	0644	edit dl rm
r8a66597.h	18069	0644	edit dl rm
r8152.h	1102	0644	edit dl rm
renesas_usbhs.h	4303	0644	edit dl rm
rndis_host.h	6080	0644	edit dl rm
role.h	3663	0644	edit dl rm
serial.h	17596	0644	edit dl rm
sl811.h	838	0644	edit dl rm
storage.h	2645	0644	edit dl rm
tcpci.h	6883	0644	edit dl rm
tcpm.h	6614	0644	edit dl rm
tegra_usb_phy.h	2586	0644	edit dl rm
typec.h	9590	0644	edit dl rm
typec_altmode.h	6639	0644	edit dl rm
typec_dp.h	3998	0644	edit dl rm
typec_mux.h	2115	0644	edit dl rm
typec_tbt.h	1774	0644	edit dl rm
uas.h	2121	0644	edit dl rm
ulpi.h	2319	0644	edit dl rm
usb338x.h	7977	0644	edit dl rm
usbnet.h	10825	0644	edit dl rm
usb_phy_generic.h	582	0644	edit dl rm
xhci-dbgp.h	825	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/include/linux/usb/otg-fsm.h (8823B)

// SPDX-License-Identifier: GPL-2.0+
/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the  GNU General Public License along
 * with this program; if not, write  to the Free Software Foundation, Inc.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __LINUX_USB_OTG_FSM_H
#define __LINUX_USB_OTG_FSM_H

#include <linux/mutex.h>
#include <linux/errno.h>

#define PROTO_UNDEF	(0)
#define PROTO_HOST	(1)
#define PROTO_GADGET	(2)

#define OTG_STS_SELECTOR	0xF000	/* OTG status selector, according to
					 * OTG and EH 2.0 Chapter 6.2.3
					 * Table:6-4
					 */

#define HOST_REQUEST_FLAG	1	/* Host request flag, according to
					 * OTG and EH 2.0 Charpter 6.2.3
					 * Table:6-5
					 */

#define T_HOST_REQ_POLL		(1500)	/* 1500ms, HNP polling interval */

enum otg_fsm_timer {
	/* Standard OTG timers */
	A_WAIT_VRISE,
	A_WAIT_VFALL,
	A_WAIT_BCON,
	A_AIDL_BDIS,
	B_ASE0_BRST,
	A_BIDL_ADIS,
	B_AIDL_BDIS,

/* Auxiliary timers */
	B_SE0_SRP,
	B_SRP_FAIL,
	A_WAIT_ENUM,
	B_DATA_PLS,
	B_SSEND_SRP,

NUM_OTG_FSM_TIMERS,
};

/**
 * struct otg_fsm - OTG state machine according to the OTG spec
 *
 * OTG hardware Inputs
 *
 *	Common inputs for A and B device
 * @id:		TRUE for B-device, FALSE for A-device.
 * @adp_change: TRUE when current ADP measurement (n) value, compared to the
 *		ADP measurement taken at n-2, differs by more than CADP_THR
 * @power_up:	TRUE when the OTG device first powers up its USB system and
 *		ADP measurement taken if ADP capable
 *
 *	A-Device state inputs
 * @a_srp_det:	TRUE if the A-device detects SRP
 * @a_vbus_vld:	TRUE when VBUS voltage is in regulation
 * @b_conn:	TRUE if the A-device detects connection from the B-device
 * @a_bus_resume: TRUE when the B-device detects that the A-device is signaling
 *		  a resume (K state)
 *	B-Device state inputs
 * @a_bus_suspend: TRUE when the B-device detects that the A-device has put the
 *		bus into suspend
 * @a_conn:	TRUE if the B-device detects a connection from the A-device
 * @b_se0_srp:	TRUE when the line has been at SE0 for more than the minimum
 *		time before generating SRP
 * @b_ssend_srp: TRUE when the VBUS has been below VOTG_SESS_VLD for more than
 *		 the minimum time before generating SRP
 * @b_sess_vld:	TRUE when the B-device detects that the voltage on VBUS is
 *		above VOTG_SESS_VLD
 * @test_device: TRUE when the B-device switches to B-Host and detects an OTG
 *		test device. This must be set by host/hub driver
 *
 *	Application inputs (A-Device)
 * @a_bus_drop:	TRUE when A-device application needs to power down the bus
 * @a_bus_req:	TRUE when A-device application wants to use the bus.
 *		FALSE to suspend the bus
 *
 *	Application inputs (B-Device)
 * @b_bus_req:	TRUE during the time that the Application running on the
 *		B-device wants to use the bus
 *
 *	Auxiliary inputs (OTG v1.3 only. Obsolete now.)
 * @a_sess_vld:	TRUE if the A-device detects that VBUS is above VA_SESS_VLD
 * @b_bus_suspend: TRUE when the A-device detects that the B-device has put
 *		the bus into suspend
 * @b_bus_resume: TRUE when the A-device detects that the B-device is signaling
 *		 resume on the bus
 *
 * OTG Output status. Read only for users. Updated by OTG FSM helpers defined
 * in this file
 *
 *	Outputs for Both A and B device
 * @drv_vbus:	TRUE when A-device is driving VBUS
 * @loc_conn:	TRUE when the local device has signaled that it is connected
 *		to the bus
 * @loc_sof:	TRUE when the local device is generating activity on the bus
 * @adp_prb:	TRUE when the local device is in the process of doing
 *		ADP probing
 *
 *	Outputs for B-device state
 * @adp_sns:	TRUE when the B-device is in the process of carrying out
 *		ADP sensing
 * @data_pulse: TRUE when the B-device is performing data line pulsing
 *
 * Internal Variables
 *
 * a_set_b_hnp_en: TRUE when the A-device has successfully set the
 *		b_hnp_enable bit in the B-device.
 *		   Unused as OTG fsm uses otg->host->b_hnp_enable instead
 * b_srp_done:	TRUE when the B-device has completed initiating SRP
 * b_hnp_enable: TRUE when the B-device has accepted the
 *		SetFeature(b_hnp_enable) B-device.
 *		Unused as OTG fsm uses otg->gadget->b_hnp_enable instead
 * a_clr_err:	Asserted (by application ?) to clear a_vbus_err due to an
 *		overcurrent condition and causes the A-device to transition
 *		to a_wait_vfall
 */
struct otg_fsm {
	/* Input */
	int id;
	int adp_change;
	int power_up;
	int a_srp_det;
	int a_vbus_vld;
	int b_conn;
	int a_bus_resume;
	int a_bus_suspend;
	int a_conn;
	int b_se0_srp;
	int b_ssend_srp;
	int b_sess_vld;
	int test_device;
	int a_bus_drop;
	int a_bus_req;
	int b_bus_req;

/* Auxiliary inputs */
	int a_sess_vld;
	int b_bus_resume;
	int b_bus_suspend;

/* Output */
	int drv_vbus;
	int loc_conn;
	int loc_sof;
	int adp_prb;
	int adp_sns;
	int data_pulse;

/* Internal variables */
	int a_set_b_hnp_en;
	int b_srp_done;
	int b_hnp_enable;
	int a_clr_err;

/* Informative variables. All unused as of now */
	int a_bus_drop_inf;
	int a_bus_req_inf;
	int a_clr_err_inf;
	int b_bus_req_inf;
	/* Auxiliary informative variables */
	int a_suspend_req_inf;

/* Timeout indicator for timers */
	int a_wait_vrise_tmout;
	int a_wait_vfall_tmout;
	int a_wait_bcon_tmout;
	int a_aidl_bdis_tmout;
	int b_ase0_brst_tmout;
	int a_bidl_adis_tmout;

struct otg_fsm_ops *ops;
	struct usb_otg *otg;

/* Current usb protocol used: 0:undefine; 1:host; 2:client */
	int protocol;
	struct mutex lock;
	u8 *host_req_flag;
	struct delayed_work hnp_polling_work;
	bool hnp_work_inited;
	bool state_changed;
};

struct otg_fsm_ops {
	void	(*chrg_vbus)(struct otg_fsm *fsm, int on);
	void	(*drv_vbus)(struct otg_fsm *fsm, int on);
	void	(*loc_conn)(struct otg_fsm *fsm, int on);
	void	(*loc_sof)(struct otg_fsm *fsm, int on);
	void	(*start_pulse)(struct otg_fsm *fsm);
	void	(*start_adp_prb)(struct otg_fsm *fsm);
	void	(*start_adp_sns)(struct otg_fsm *fsm);
	void	(*add_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
	void	(*del_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
	int	(*start_host)(struct otg_fsm *fsm, int on);
	int	(*start_gadget)(struct otg_fsm *fsm, int on);
};

static inline int otg_chrg_vbus(struct otg_fsm *fsm, int on)
{
	if (!fsm->ops->chrg_vbus)
		return -EOPNOTSUPP;
	fsm->ops->chrg_vbus(fsm, on);
	return 0;
}

static inline int otg_drv_vbus(struct otg_fsm *fsm, int on)
{
	if (!fsm->ops->drv_vbus)
		return -EOPNOTSUPP;
	if (fsm->drv_vbus != on) {
		fsm->drv_vbus = on;
		fsm->ops->drv_vbus(fsm, on);
	}
	return 0;
}

static inline int otg_loc_conn(struct otg_fsm *fsm, int on)
{
	if (!fsm->ops->loc_conn)
		return -EOPNOTSUPP;
	if (fsm->loc_conn != on) {
		fsm->loc_conn = on;
		fsm->ops->loc_conn(fsm, on);
	}
	return 0;
}

static inline int otg_loc_sof(struct otg_fsm *fsm, int on)
{
	if (!fsm->ops->loc_sof)
		return -EOPNOTSUPP;
	if (fsm->loc_sof != on) {
		fsm->loc_sof = on;
		fsm->ops->loc_sof(fsm, on);
	}
	return 0;
}

static inline int otg_start_pulse(struct otg_fsm *fsm)
{
	if (!fsm->ops->start_pulse)
		return -EOPNOTSUPP;
	if (!fsm->data_pulse) {
		fsm->data_pulse = 1;
		fsm->ops->start_pulse(fsm);
	}
	return 0;
}

static inline int otg_start_adp_prb(struct otg_fsm *fsm)
{
	if (!fsm->ops->start_adp_prb)
		return -EOPNOTSUPP;
	if (!fsm->adp_prb) {
		fsm->adp_sns = 0;
		fsm->adp_prb = 1;
		fsm->ops->start_adp_prb(fsm);
	}
	return 0;
}

static inline int otg_start_adp_sns(struct otg_fsm *fsm)
{
	if (!fsm->ops->start_adp_sns)
		return -EOPNOTSUPP;
	if (!fsm->adp_sns) {
		fsm->adp_sns = 1;
		fsm->ops->start_adp_sns(fsm);
	}
	return 0;
}

static inline int otg_add_timer(struct otg_fsm *fsm, enum otg_fsm_timer timer)
{
	if (!fsm->ops->add_timer)
		return -EOPNOTSUPP;
	fsm->ops->add_timer(fsm, timer);
	return 0;
}

static inline int otg_del_timer(struct otg_fsm *fsm, enum otg_fsm_timer timer)
{
	if (!fsm->ops->del_timer)
		return -EOPNOTSUPP;
	fsm->ops->del_timer(fsm, timer);
	return 0;
}

static inline int otg_start_host(struct otg_fsm *fsm, int on)
{
	if (!fsm->ops->start_host)
		return -EOPNOTSUPP;
	return fsm->ops->start_host(fsm, on);
}

static inline int otg_start_gadget(struct otg_fsm *fsm, int on)
{
	if (!fsm->ops->start_gadget)
		return -EOPNOTSUPP;
	return fsm->ops->start_gadget(fsm, on);
}

int otg_statemachine(struct otg_fsm *fsm);

#endif /* __LINUX_USB_OTG_FSM_H */

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