linux/drivers/usb/gadget/udc/bdc/bdc_cmd.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * bdc_cmd.c - BRCM BDC USB3.0 device controller
 *
 * Copyright (C) 2014 Broadcom Corporation
 *
 * Author: Ashwini Pahuja
 */
#include <linux/scatterlist.h>
#include <linux/slab.h>

#include "bdc.h"
#include "bdc_cmd.h"
#include "bdc_dbg.h"

/* Issues a cmd to cmd processor and waits for cmd completion */
static int bdc_issue_cmd(struct bdc *bdc, u32 cmd_sc, u32 param0,
							u32 param1, u32 param2)
{ … }

/* Submits cmd and analyze the return value of bdc_issue_cmd */
static int bdc_submit_cmd(struct bdc *bdc, u32 cmd_sc,
					u32 param0, u32 param1,	u32 param2)
{ … }

/* Deconfigure the endpoint from HW */
int bdc_dconfig_ep(struct bdc *bdc, struct bdc_ep *ep)
{ … }

/* Reinitalize the bdlist after config ep command */
static void ep_bd_list_reinit(struct bdc_ep *ep)
{ … }

/* Configure an endpoint */
int bdc_config_ep(struct bdc *bdc, struct bdc_ep *ep)
{ … }

/*
 * Change the HW deq pointer, if this command is successful, HW will start
 * fetching the next bd from address dma_addr.
 */
int bdc_ep_bla(struct bdc *bdc, struct bdc_ep *ep, dma_addr_t dma_addr)
{ … }

/* Set the address sent bu Host in SET_ADD request */
int bdc_address_device(struct bdc *bdc, u32 add)
{ … }

/* Send a Function Wake notification packet using FH command */
int bdc_function_wake_fh(struct bdc *bdc, u8 intf)
{ … }

/* Send a Function Wake notification packet using DNC command */
int bdc_function_wake(struct bdc *bdc, u8 intf)
{ … }

/* Stall the endpoint */
int bdc_ep_set_stall(struct bdc *bdc, int epnum)
{ … }

/* resets the endpoint, called when host sends CLEAR_FEATURE(HALT) */
int bdc_ep_clear_stall(struct bdc *bdc, int epnum)
{ … }

/* Stop the endpoint, called when software wants to dequeue some request */
int bdc_stop_ep(struct bdc *bdc, int epnum)
{ … }