linux/drivers/bus/fsl-mc/dpbp.c

// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 *
 */
#include <linux/kernel.h>
#include <linux/fsl/mc.h>

#include "fsl-mc-private.h"

/**
 * dpbp_open() - Open a control session for the specified object.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @dpbp_id:	DPBP unique ID
 * @token:	Returned token; use in subsequent API calls
 *
 * This function can be used to open a control session for an
 * already created object; an object may have been declared in
 * the DPL or by calling the dpbp_create function.
 * This function returns a unique authentication token,
 * associated with the specific object ID and the specific MC
 * portal; this token must be used in all subsequent commands for
 * this specific object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_open(struct fsl_mc_io *mc_io,
	      u32 cmd_flags,
	      int dpbp_id,
	      u16 *token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpbp_close() - Close the control session of the object
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * After this function is called, no further operations are
 * allowed on the object without opening a new control session.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_close(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       u16 token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpbp_enable() - Enable the DPBP.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_enable(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		u16 token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpbp_disable() - Disable the DPBP.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_disable(struct fsl_mc_io *mc_io,
		 u32 cmd_flags,
		 u16 token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpbp_reset() - Reset the DPBP, returns the object to initial state.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_reset(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       u16 token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpbp_get_attributes - Retrieve DPBP attributes.
 *
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPBP object
 * @attr:	Returned object's attributes
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpbp_get_attributes(struct fsl_mc_io *mc_io,
			u32 cmd_flags,
			u16 token,
			struct dpbp_attr *attr)
{ … }
EXPORT_SYMBOL_GPL(…);