linux/drivers/bus/fsl-mc/dpcon.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"

/**
 * dpcon_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_'
 * @dpcon_id:	DPCON 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 dpcon_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 dpcon_open(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       int dpcon_id,
	       u16 *token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpcon_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 DPCON 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 dpcon_close(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		u16 token)
{ … }
EXPORT_SYMBOL_GPL(…);

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

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

/**
 * dpcon_reset() - Reset the DPCON, 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 DPCON object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpcon_reset(struct fsl_mc_io *mc_io,
		u32 cmd_flags,
		u16 token)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpcon_get_attributes() - Retrieve DPCON 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 DPCON object
 * @attr:	Object's attributes
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpcon_get_attributes(struct fsl_mc_io *mc_io,
			 u32 cmd_flags,
			 u16 token,
			 struct dpcon_attr *attr)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * dpcon_set_notification() - Set DPCON notification destination
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPCON object
 * @cfg:	Notification parameters
 *
 * Return:	'0' on Success; Error code otherwise
 */
int dpcon_set_notification(struct fsl_mc_io *mc_io,
			   u32 cmd_flags,
			   u16 token,
			   struct dpcon_notification_cfg *cfg)
{ … }
EXPORT_SYMBOL_GPL(…);