Orange Pi5 kernel

// 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)
{
<------>struct fsl_mc_command cmd = { 0 };
<------>struct dpbp_cmd_open *cmd_params;
<------>int err;
 
<------>/* prepare command */
<------>cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
<------><------><------><------><------>  cmd_flags, 0);
<------>cmd_params = (struct dpbp_cmd_open *)cmd.params;
<------>cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
 
<------>/* send command to mc*/
<------>err = mc_send_command(mc_io, &cmd);
<------>if (err)
<------><------>return err;
 
<------>/* retrieve response parameters */
<------>*token = mc_cmd_hdr_read_token(&cmd);
 
<------>return err;
}
EXPORT_SYMBOL_GPL(dpbp_open);
 
/**
 * 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)
{
<------>struct fsl_mc_command cmd = { 0 };
 
<------>/* prepare command */
<------>cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
<------><------><------><------><------>  token);
 
<------>/* send command to mc*/
<------>return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_close);
 
/**
 * 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)
{
<------>struct fsl_mc_command cmd = { 0 };
 
<------>/* prepare command */
<------>cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
<------><------><------><------><------>  token);
 
<------>/* send command to mc*/
<------>return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_enable);
 
/**
 * 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)
{
<------>struct fsl_mc_command cmd = { 0 };
 
<------>/* prepare command */
<------>cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
<------><------><------><------><------>  cmd_flags, token);
 
<------>/* send command to mc*/
<------>return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_disable);
 
/**
 * 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)
{
<------>struct fsl_mc_command cmd = { 0 };
 
<------>/* prepare command */
<------>cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
<------><------><------><------><------>  cmd_flags, token);
 
<------>/* send command to mc*/
<------>return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpbp_reset);
 
/**
 * 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)
{
<------>struct fsl_mc_command cmd = { 0 };
<------>struct dpbp_rsp_get_attributes *rsp_params;
<------>int err;
 
<------>/* prepare command */
<------>cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
<------><------><------><------><------>  cmd_flags, token);
 
<------>/* send command to mc*/
<------>err = mc_send_command(mc_io, &cmd);
<------>if (err)
<------><------>return err;
 
<------>/* retrieve response parameters */
<------>rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
<------>attr->bpid = le16_to_cpu(rsp_params->bpid);
<------>attr->id = le32_to_cpu(rsp_params->id);
 
<------>return 0;
}
EXPORT_SYMBOL_GPL(dpbp_get_attributes);