stm32f7/common: Add CS4344 audio codec initialization
This commit is contained in:
Alan Carvalho de Assis
Xiang Xiao
parent
3edda2ab94
commit
d9148add03
82
boards/arm/stm32f7/common/include/stm32_cs4344.h
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82
boards/arm/stm32f7/common/include/stm32_cs4344.h
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@ -0,0 +1,82 @@
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/****************************************************************************
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* boards/arm/stm32f7/common/include/stm32_cs4344.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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#ifndef __BOARDS_ARM_STM32F7_COMMON_INCLUDE_STM32_CS4344_H
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#define __BOARDS_ARM_STM32F7_COMMON_INCLUDE_STM32_CS4344_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_cs4344_initialize
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*
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* Description:
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* This function is called by platform-specific, setup logic to configure
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* and register the CS4344 device. This function will register the driver
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* as /dev/audio/pcm[x] where x is determined by the minor device number.
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*
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* Input Parameters:
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* minor - The input device minor number
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int board_cs4344_initialize(int devno, int port);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __BOARDS_ARM_STM32F7_COMMON_INCLUDE_STM32_CS4344_H */
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@ -28,4 +28,8 @@ if(CONFIG_SENSORS_BMI270_I2C)
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list(APPEND SRCS stm32_bmi270.c)
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list(APPEND SRCS stm32_bmi270.c)
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endif()
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endif()
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if(CONFIG_AUDIO_CS4344)
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list(APPEND SRCS stm32_cs4344.c)
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endif()
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target_sources(board PRIVATE ${SRCS})
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target_sources(board PRIVATE ${SRCS})
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@ -28,6 +28,10 @@ ifeq ($(CONFIG_SENSORS_BMI270_I2C),y)
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CSRCS += stm32_bmi270.c
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CSRCS += stm32_bmi270.c
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endif
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endif
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ifeq ($(CONFIG_AUDIO_CS4344),y)
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CSRCS += stm32_cs4344.c
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endif
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DEPPATH += --dep-path src
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DEPPATH += --dep-path src
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VPATH += :src
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VPATH += :src
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src
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168
boards/arm/stm32f7/common/src/stm32_cs4344.c
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168
boards/arm/stm32f7/common/src/stm32_cs4344.c
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@ -0,0 +1,168 @@
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/****************************************************************************
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* boards/arm/stm32f7/common/src/stm32_cs4344.c
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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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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <debug.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/irq.h>
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#include <nuttx/audio/i2s.h>
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#include <nuttx/audio/pcm.h>
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#include <nuttx/audio/cs4344.h>
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#include <arch/board/board.h>
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#include "stm32_i2s.h"
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#include "stm32_pwr.h"
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#include "stm32_rcc.h"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_cs4344_initialize
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*
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* Description:
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* This function is called by platform-specific, setup logic to configure
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* and register the CS4344 device. This function will register the driver
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* as /dev/audio/pcm[x] where x is determined by the minor device number.
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*
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* Input Parameters:
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* minor - The input device minor number
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int board_cs4344_initialize(int devno, int port)
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{
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struct audio_lowerhalf_s *cs4344;
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struct audio_lowerhalf_s *pcm;
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struct i2s_dev_s *i2s;
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static bool initialized = false;
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char devname[12];
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int ret;
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audinfo("minor %d\n", devno);
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DEBUGASSERT(devno >= 0 && devno <= 25);
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/* Have we already initialized? Since we never uninitialize we must
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* prevent multiple initializations. This is necessary, for example,
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* when the touchscreen example is used as a built-in application in
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* NSH and can be called numerous time. It will attempt to initialize
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* each time.
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*/
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if (!initialized)
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{
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/* Get an instance of the I2S interface for the CS4344 data channel */
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i2s = stm32_i2sbus_initialize(port);
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if (!i2s)
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{
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auderr("ERROR: Failed to initialize I2S%d\n", port);
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ret = -ENODEV;
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goto errout;
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}
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/* Now we can use this I2S interface to initialize the CS4344 which
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* will return an audio interface.
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*/
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cs4344 = cs4344_initialize(i2s);
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if (!cs4344)
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{
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auderr("ERROR: Failed to initialize the CS4344\n");
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ret = -ENODEV;
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goto errout;
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}
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/* No we can embed the CS4344/I2S conglomerate into a PCM decoder
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* instance so that we will have a PCM front end for the the CS4344
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* driver.
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*/
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pcm = pcm_decode_initialize(cs4344);
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if (!pcm)
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{
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auderr("ERROR: Failed create the PCM decoder\n");
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ret = -ENODEV;
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goto errout;
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}
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/* Create a device name */
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snprintf(devname, 12, "pcm%d", devno);
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/* Finally, we can register the PCM/CS4344/I2S audio device.
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*
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* Is anyone young enough to remember Rube Goldberg?
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*/
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ret = audio_register(devname, pcm);
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if (ret < 0)
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{
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auderr("ERROR: Failed to register /dev/%s device: %d\n",
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devname, ret);
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goto errout;
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}
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/* Now we are initialized */
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initialized = true;
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}
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return OK;
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errout:
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return ret;
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}
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