forked from Minki/linux
5b04cedeca
The "struct mc_command" is a very generic name for a global kernel structure. Change its name in "struct fsl_mc_command". Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
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"
|
|
|
|
/**
|
|
* dpmcp_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_'
|
|
* @dpmcp_id: DPMCP 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 dpmcp_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 dpmcp_open(struct fsl_mc_io *mc_io,
|
|
u32 cmd_flags,
|
|
int dpmcp_id,
|
|
u16 *token)
|
|
{
|
|
struct fsl_mc_command cmd = { 0 };
|
|
struct dpmcp_cmd_open *cmd_params;
|
|
int err;
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(DPMCP_CMDID_OPEN,
|
|
cmd_flags, 0);
|
|
cmd_params = (struct dpmcp_cmd_open *)cmd.params;
|
|
cmd_params->dpmcp_id = cpu_to_le32(dpmcp_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;
|
|
}
|
|
|
|
/**
|
|
* dpmcp_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 DPMCP 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 dpmcp_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(DPMCP_CMDID_CLOSE,
|
|
cmd_flags, token);
|
|
|
|
/* send command to mc*/
|
|
return mc_send_command(mc_io, &cmd);
|
|
}
|
|
|
|
/**
|
|
* dpmcp_reset() - Reset the DPMCP, 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 DPMCP object
|
|
*
|
|
* Return: '0' on Success; Error code otherwise.
|
|
*/
|
|
int dpmcp_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(DPMCP_CMDID_RESET,
|
|
cmd_flags, token);
|
|
|
|
/* send command to mc*/
|
|
return mc_send_command(mc_io, &cmd);
|
|
}
|