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/*
* Copyright (C) 2017-2024 Alibaba Group Holding Limited
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/******************************************************************************
* @file wj_etb.c
* @brief CSI Source File for etb Driver
* @version V1.0
* @date 19. December 2024
* @vendor csky
* @name wj_etb
* @ip_id 0x111000010
* @model etb
* @tag DEV_WJ_ETB_TAG
******************************************************************************/
#include <soc.h>
#include <drv/etb.h>
#include <drv/common.h>
static uint8_t csi_etb_alloc_status[4];
static int32_t check_is_alloced(int32_t ch_id)
{
uint32_t ch_offset, ch_group;
int32_t ret = 0;
uint8_t status = 0U;
ch_group = (uint32_t)((uint32_t)ch_id / 8U);
ch_offset = (uint32_t)((uint32_t)ch_id % 8U);
status = csi_etb_alloc_status[ch_group];
status &= (uint8_t)(1U << (uint8_t)ch_offset);
if (status != 0U) {
ret = -1;
}
return ret;
}
static void set_ch_alloc_status(int32_t ch_id, uint32_t status)
{
uint32_t ch_offset, ch_group;
ch_group = (uint32_t)((uint32_t)ch_id / 8U);
ch_offset = (uint32_t)((uint32_t)ch_id % 8U);
if (status == 1U) {
csi_etb_alloc_status[ch_group] |= (uint8_t)(1U << (uint8_t)ch_offset);
} else if (status == 0U) {
csi_etb_alloc_status[ch_group] &= ~(uint8_t)(1U << (uint8_t)ch_offset);
}
}
csi_error_t csi_etb_init(void)
{
///< TODO：使能ETB
return CSI_OK;
}
void csi_etb_uninit(void)
{
///< TODO：禁止ETB
}
int32_t csi_etb_ch_alloc(csi_etb_ch_type_t ch_type)
{
int32_t ret, ret_ch;
uint32_t result = csi_irq_save();
switch (ch_type) {
case ETB_CH_MORE_TRIGGER_ONE:
ret_ch = 0;
if (check_is_alloced(ret_ch) < 0) {
ret = CSI_ERROR;
} else {
ret = ret_ch;
}
break;
case ETB_CH_ONE_TRIGGER_MORE:
for (ret_ch = 1; ret_ch < 3; ret_ch++) {
if (check_is_alloced(ret_ch) != -1) {
break;
}
}
if (ret_ch == 3) {
ret = CSI_ERROR;
} else {
ret = ret_ch;
}
break;
case ETB_CH_ONE_TRIGGER_ONE:
for (ret_ch = 3; ret_ch < 32; ret_ch++) {
if (check_is_alloced(ret_ch) != -1) {
break;
}
}
if (ret_ch == 32) {
ret = CSI_ERROR;
} else {
ret = ret_ch;
}
break;
default:
ret = CSI_ERROR;
}
if (ret != CSI_ERROR) {
set_ch_alloc_status(ret_ch, 1U);
}
csi_irq_restore(result);
return ret;
}
void csi_etb_ch_free(int32_t ch_id)
{
uint32_t result = csi_irq_save();
set_ch_alloc_status(ch_id, 0U);
csi_irq_restore(result);
}
csi_error_t csi_etb_ch_config(int32_t ch_id, csi_etb_config_t *config)
{
CSI_PARAM_CHK(config, CSI_ERROR);
csi_error_t ret = CSI_OK;
if (config->ch_type == ETB_CH_ONE_TRIGGER_ONE) {
if (ch_id < 3) {
ret = CSI_ERROR;
} else {
///< TODO：配置ETB的通道
}
} else {
ret = CSI_UNSUPPORTED;
}
if (ret == CSI_OK) {
///< TODO：配置ETB通道的触发
}
return ret;
}
void csi_etb_ch_start(int32_t ch_id)
{
///< TODO：使能ETB通道
}
void csi_etb_ch_stop(int32_t ch_id)
{
///< TODO：禁止ETB通道
}
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