167d045c3d
Driver needs to pass qdss data received from mdm qdss bridge driver to host PC. This requires a software data path using IN endpoint. Bridge driver needs to open qdss_mdm channel and use exported write() API to pass the qdss data received from mdm. Driver calls the notify call back upon write completion. Change-Id: I4d8ceaed0bf9c85aa17d3f49503cd690917cc117 Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
77 lines
2 KiB
C
77 lines
2 KiB
C
/*
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* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*/
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#ifndef _F_QDSS_H
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#define _F_QDSS_H
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#include <linux/kernel.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <linux/usb/msm_hsusb.h>
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#include <linux/usb/composite.h>
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#include <linux/usb/usb_qdss.h>
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#include "u_rmnet.h"
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struct usb_qdss_bam_connect_info {
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u32 usb_bam_pipe_idx;
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u32 peer_pipe_idx;
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unsigned long usb_bam_handle;
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struct sps_mem_buffer *data_fifo;
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};
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struct gqdss {
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struct usb_function function;
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struct usb_ep *ctrl_out;
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struct usb_ep *ctrl_in;
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struct usb_ep *data;
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int (*send_encap_cmd)(enum qti_port_type qport, void *buf, size_t len);
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void (*notify_modem)(void *g, enum qti_port_type qport, int cbits);
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};
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/* struct f_qdss - USB qdss function driver private structure */
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struct f_qdss {
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struct gqdss port;
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struct usb_qdss_bam_connect_info bam_info;
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struct usb_gadget *gadget;
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short int port_num;
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u8 ctrl_iface_id;
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u8 data_iface_id;
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int usb_connected;
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bool debug_inface_enabled;
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struct usb_request *endless_req;
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struct usb_qdss_ch ch;
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struct list_head ctrl_read_pool;
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struct list_head ctrl_write_pool;
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/* for mdm channel SW path */
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struct list_head data_write_pool;
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struct work_struct connect_w;
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struct work_struct disconnect_w;
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spinlock_t lock;
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unsigned int data_enabled:1;
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unsigned int ctrl_in_enabled:1;
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unsigned int ctrl_out_enabled:1;
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struct workqueue_struct *wq;
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};
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struct usb_qdss_opts {
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struct usb_function_instance func_inst;
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struct f_qdss *usb_qdss;
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char *channel_name;
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};
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int uninit_data(struct usb_ep *ep);
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int set_qdss_data_connection(struct f_qdss *qdss, int enable);
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#endif
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