81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-10-13 flybreak the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <string.h>
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#include <stdlib.h>
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#define DBG_TAG "dev_bus"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#if defined(RT_USING_POSIX_DEVIO)
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#include <unistd.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <sys/ioctl.h>
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#include <dfs_file.h>
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static int bus_fops_open(struct dfs_fd *fd)
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{
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LOG_D("bus fops open");
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return 0;
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}
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static int bus_fops_close(struct dfs_fd *fd)
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{
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LOG_D("bus fops close");
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return 0;
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}
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static const struct dfs_file_ops bus_fops =
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{
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bus_fops_open,
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bus_fops_close,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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};
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#endif
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rt_device_t rt_device_bus_create(char *name, int attach_size)
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{
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rt_err_t result = RT_EOK;
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rt_device_t dev = rt_device_create(RT_Device_Class_Bus, 0);
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result = rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE);
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if (result < 0)
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{
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rt_kprintf("dev bus [%s] register failed!, ret=%d\n", name, result);
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return RT_NULL;
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}
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#if defined(RT_USING_POSIX_DEVIO)
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dev->fops = &bus_fops;
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#endif
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LOG_D("bus create");
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return dev;
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}
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rt_err_t rt_device_bus_destroy(rt_device_t dev)
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{
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rt_device_unregister(dev);
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dev->parent.type = RT_Object_Class_Device;
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rt_device_destroy(dev);
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LOG_D("bus destroy");
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return RT_EOK;
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}
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