usb: gadget: Add snapshot of USB RMNET Function driver

obj-$(CONFIG_USB_F_PTP)		+= usb_f_ptp.o

usb_f_qcrndis-y			:= f_qc_rndis.o u_data_ipa.o

obj-$(CONFIG_USB_F_QCRNDIS)	+= usb_f_qcrndis.o

usb_f_rmnet_bam-y               := f_rmnet.o u_ctrl_qti.o

obj-$(CONFIG_USB_F_RMNET_BAM)   += usb_f_rmnet_bam.o

/* SPDX-License-Identifier: GPL-2.0-only */

/* Copyright (c) 2011-2017, 2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * 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.

 */

#ifndef __U_RMNET_H

#define __U_RMNET_H

#include <linux/usb/composite.h>

#include <linux/usb/cdc.h>

#include <linux/wait.h>

#include <linux/workqueue.h>

#include "f_qdss.h"

enum bam_dmux_func_type {

	BAM_DMUX_FUNC_RMNET,

	BAM_DMUX_FUNC_MBIM,

	BAM_DMUX_FUNC_DPL,

	BAM_DMUX_NUM_FUNCS,

};

struct rmnet_ctrl_pkt {

	void	*buf;

	int	len;

	struct list_head	list;

};

struct data_port {

	struct usb_composite_dev	*cdev;

	struct usb_function		*func;

	int				rx_buffer_size;

	struct usb_ep			*in;

	struct usb_ep			*out;

	int				ipa_consumer_ep;

	int				ipa_producer_ep;

	const struct usb_endpoint_descriptor	*in_ep_desc_backup;

	const struct usb_endpoint_descriptor	*out_ep_desc_backup;

};

struct grmnet {

	/* to usb host, aka laptop, windows pc etc. Will

	 * be filled by usb driver of rmnet functionality

	 */

	int (*send_cpkt_response)(void *g, void *buf, size_t len);

	/* to modem, and to be filled by driver implementing

	 * control function

	 */

	int (*send_encap_cmd)(enum qti_port_type qport, void *buf, size_t len);

	void (*notify_modem)(void *g, enum qti_port_type qport, int cbits);

	void (*disconnect)(struct grmnet *g);

	void (*connect)(struct grmnet *g);

};

enum ctrl_client {

	FRMNET_CTRL_CLIENT,

	GPS_CTRL_CLIENT,

	NR_CTRL_CLIENTS

};

enum data_xport_type {

	BAM_DMUX,

	BAM2BAM_IPA,

	NR_XPORT_TYPES

};

static inline int gbam_setup(enum bam_dmux_func_type func)

{

	return 0;

}

static inline void gbam_cleanup(enum bam_dmux_func_type func)

{

}

static inline int gbam_connect(struct data_port *gr,

		enum bam_dmux_func_type func)

{

	return 0;

}

static inline void gbam_disconnect(struct data_port *gr,

		enum bam_dmux_func_type func)

{

}

int gbam_mbim_connect(struct usb_gadget *g, struct usb_ep *in,

			struct usb_ep *out);

void gbam_mbim_disconnect(void);

int gbam_mbim_setup(void);

int gqti_ctrl_connect(void *gr, enum qti_port_type qport, unsigned int intf,

						enum data_xport_type dxport);

void gqti_ctrl_disconnect(void *gr, enum qti_port_type qport);

int gqti_ctrl_init(void);

void gqti_ctrl_cleanup(void);

#endif /* __U_RMNET_H*/