/**************************************************************************** * boards/xtensa/esp32/common/include/esp32_es8388.h * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you 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. * ****************************************************************************/ #ifndef __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_ESP32_ES8388_H #define __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_ESP32_ES8388_H /**************************************************************************** * Included Files ****************************************************************************/ #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Type Definitions ****************************************************************************/ /**************************************************************************** * Public Types ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /**************************************************************************** * Inline Functions ****************************************************************************/ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ /**************************************************************************** * Name: esp32_es8388_initialize * * Description: * This function is called by platform-specific, setup logic to configure * and register the ES8388 device. This function will register the driver * as /dev/audio/pcm[x] where x is determined by the I2S port number. * * Input Parameters: * i2c_port - The I2C port used for the device * i2c_addr - The I2C address used by the device * i2c_freq - The I2C frequency used for the device * i2s_port - The I2S port used for the device * * Returned Value: * Zero is returned on success. Otherwise, a negated errno value is * returned to indicate the nature of the failure. * ****************************************************************************/ int esp32_es8388_initialize(int i2c_port, uint8_t i2c_addr, int i2c_freq, int i2s_port); #undef EXTERN #ifdef __cplusplus } #endif #endif /* __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_ESP32_ES8388_H */