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feat[SPI]: Add SPI device detach function

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This commit is contained in:
wdfk-prog
2025-09-25 11:41:58 +08:00
committed by R b b666
parent da99c507c4
commit 7e5cd48360
4 changed files with 107 additions and 4 deletions
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components/drivers/include/drivers/dev_spi.h
+29 -1
View File
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2006-2024 RT-Thread Development Team
* Copyright (c) 2006-2025 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
@@ -349,6 +349,19 @@ rt_err_t rt_spi_bus_attach_device(struct rt_spi_device *device,
const char *bus_name,
void *user_data);
/**
* @brief Detach a device from the SPI bus.
*
* This function serves as the high-level API to detach a SPI device from its bus.
* It unregisters the device from the device framework and ensures all associated
* resources, such as the chip select pin, are properly released by calling
* the underlying implementation.
*
* @param device The SPI device to be detached.
*
* @return rt_err_t The result of the operation. RT_EOK on success, otherwise an error code.
*/
rt_err_t rt_spi_bus_detach_device(struct rt_spi_device *device);
/**
* @brief attach a device on SPI bus with CS pin
@@ -367,6 +380,21 @@ rt_err_t rt_spi_bus_attach_device_cspin(struct rt_spi_device *device,
rt_base_t cs_pin,
void *user_data);
/**
* @brief Detach a device from the SPI bus and release its CS pin.
*
* This function provides the low-level implementation for detaching a device
* from the SPI bus. It specifically handles the operations for the chip select (CS)
* pin, resetting it to input mode to release it. This function is typically
* called by the higher-level rt_spi_bus_detach_device() and should not be
* called directly by the user application.
*
* @param device The SPI device to be detached.
*
* @return rt_err_t The result of the operation. RT_EOK on success, otherwise an error code.
*/
rt_err_t rt_spi_bus_detach_device_cspin(struct rt_spi_device *device);
/**
* @brief Reconfigure the SPI bus for the specified device.
*
components/drivers/spi/dev_spi_core.c
+33
View File
@@ -123,6 +123,34 @@ rt_err_t rt_spi_bus_attach_device_cspin(struct rt_spi_device *device,
return -RT_ERROR;
}
rt_err_t rt_spi_bus_detach_device_cspin(struct rt_spi_device *device)
{
rt_err_t result;
RT_ASSERT(device != RT_NULL);
result = rt_device_unregister(&device->parent);
if (result != RT_EOK)
{
LOG_E("Failed to unregister spi device, result: %d", result);
return result;
}
if (device->bus != RT_NULL && device->bus->owner == device)
{
device->bus->owner = RT_NULL;
}
if (device->cs_pin != PIN_NONE)
{
rt_pin_mode(device->cs_pin, PIN_MODE_INPUT);
}
device->bus = RT_NULL;
return RT_EOK;
}
rt_err_t rt_spi_bus_attach_device(struct rt_spi_device *device,
const char *name,
const char *bus_name,
@@ -131,6 +159,11 @@ rt_err_t rt_spi_bus_attach_device(struct rt_spi_device *device,
return rt_spi_bus_attach_device_cspin(device, name, bus_name, PIN_NONE, user_data);
}
rt_err_t rt_spi_bus_detach_device(struct rt_spi_device *device)
{
return rt_spi_bus_detach_device_cspin(device);
}
rt_err_t rt_spi_bus_configure(struct rt_spi_device *device)
{
rt_err_t result = -RT_ERROR;