077ad5b45f
Summary: - It is applicable to esp32 products and uses the himem part of 8M psram by creating character devices. Impact: - None Testing: - Use esp32-wrover series products for more than 1000 functional verifications.
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/****************************************************************************
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* arch/xtensa/include/esp32/esp32_himem_chardev.h
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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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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifndef __ARCH_XTENSA_INCLUDE_ESP32_ESP32_HIMEM_CHARDEV_H
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#define __ARCH_XTENSA_INCLUDE_ESP32_ESP32_HIMEM_CHARDEV_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/****************************************************************************
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* Name: himem_chardev_init
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*
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* Description:
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* Himem_Cdev Initializes the operation.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Returns 0 on success and non-zero on failure.
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*
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****************************************************************************/
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int himem_chardev_init(void);
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/****************************************************************************
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* Name: himem_chardev_exit
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*
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* Description:
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* Himem_Cdev exits and releases the operation.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Returns 0 on success and non-zero on failure.
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*
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****************************************************************************/
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int himem_chardev_exit(void);
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/****************************************************************************
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* Name: himem_chardev_register
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*
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* Description:
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* Himem_Cdev indicates the registration operation.
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*
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* Input Parameters:
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* name - Himem_Cdev indicates the registration name.
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* size - Himem_Cdev registers the device size.
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*
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* Returned Value:
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* Returns 0 on success and non-zero on failure.
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*
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****************************************************************************/
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int himem_chardev_register(char *name, size_t size);
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/****************************************************************************
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* Name: himem_chardev_unregister
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*
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* Description:
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* Himem_Cdev cancels the registration
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*
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* Input Parameters:
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* name - Himem_Cdev indicates the registration name.
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*
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* Returned Value:
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* Returns 0 on success and non-zero on failure.
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*
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****************************************************************************/
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int himem_chardev_unregister(char *name);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ARCH_XTENSA_INCLUDE_ESP32_ESP32_HIMEM_CHARDEV_H */
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