117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/****************************************************************************
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* drivers/crypto/pnt/sm_i2c.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* Copyright 2023 NXP */
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "sm_i2c.h"
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#include "../se05x_internal.h"
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#include <nuttx/crypto/se05x.h>
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#include <nuttx/i2c/i2c_master.h>
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int se05x_i2c_write(FAR struct se05x_dev_s *priv,
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FAR const uint8_t *buffer, ssize_t buflen)
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{
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struct i2c_msg_s msg;
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int ret;
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/* Setup for the transfer */
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msg.frequency = priv->config->frequency;
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msg.addr = priv->config->address;
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msg.flags = 0;
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msg.buffer = (FAR uint8_t *)buffer; /* Override const */
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msg.length = buflen;
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/* Then perform the transfer. */
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ret = I2C_TRANSFER(priv->i2c, &msg, 1);
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return (ret >= 0) ? OK : ret;
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}
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static int se05x_i2c_read(FAR struct se05x_dev_s *priv, FAR uint8_t *buffer,
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ssize_t buflen)
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{
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struct i2c_msg_s msg;
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int ret;
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/* Setup for the transfer */
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msg.frequency = priv->config->frequency;
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msg.addr = priv->config->address;
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msg.flags = I2C_M_READ;
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msg.buffer = buffer;
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msg.length = buflen;
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/* Then perform the transfer. */
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ret = I2C_TRANSFER(priv->i2c, &msg, 1);
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return (ret >= 0) ? OK : ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: axI2CInit
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*
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* Description:
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* Initialize i2c (plug and trust mw hook)
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* pDevName should contain the private device struct
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*
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****************************************************************************/
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unsigned int sm_i2c_init(FAR void **conn_ctx, FAR const char *dev_name)
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{
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*conn_ctx = (FAR void *)dev_name;
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return I2C_OK;
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}
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void sm_i2c_term(FAR void *conn_ctx, int mode)
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{
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(void)conn_ctx;
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(void)mode;
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}
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unsigned int sm_i2c_write(FAR void *conn_ctx, unsigned char bus,
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unsigned char addr, FAR unsigned char *tx,
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unsigned short tx_len)
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{
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(void)bus;
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int result = se05x_i2c_write(conn_ctx, tx, (ssize_t)tx_len);
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return result == OK ? I2C_OK : I2C_FAILED;
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}
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unsigned int sm_i2c_read(FAR void *conn_ctx, uint8_t bus, uint8_t addr,
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FAR uint8_t *rx, unsigned short rx_len)
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{
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(void)bus;
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int result = se05x_i2c_read(conn_ctx, rx, (ssize_t)rx_len);
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return result == OK ? I2C_OK : I2C_FAILED;
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}
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