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nuttx/drivers/audio/cxd56.h
SPRESENSE 035a00e286 driver/audio/cxd56: Support 24bit, 192kHz and 4ch max 
Support CXD56 audio input for 192kHz sampleing rate,
24bit and 4channels.
2023-08-18 08:53:04 +02:00

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/****************************************************************************
* drivers/audio/cxd56.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 __DRIVERS_AUDIO_CXD56_H
#define __DRIVERS_AUDIO_CXD56_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <pthread.h>
#include <mqueue.h>
#include <nuttx/audio/audio.h>
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <nuttx/fs/ioctl.h>
#include <nuttx/spinlock.h>
#ifdef CONFIG_AUDIO
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef CONFIG_CXD56_AUDIO_WORKER_STACKSIZE
# define CONFIG_CXD56_AUDIO_WORKER_STACKSIZE 768
#endif
#ifndef CONFIG_CXD56_MSG_PRIO
# define CONFIG_CXD56_MSG_PRIO 1
#endif
#ifdef CONFIG_CXD56_AUDIO_I2S_DEVICE_1_MASTER
# define CXD56_I2S1_MODE 0 /* Master */
#else
# define CXD56_I2S1_MODE 1 /* Slave */
#endif
#ifdef CONFIG_CXD56_AUDIO_I2S_FORMAT_1_LEFT
# define CXD56_I2S1_FORMAT 1 /* Left */
#else
# define CXD56_I2S1_FORMAT 0 /* Normal */
#endif
#ifdef CONFIG_CXD56_AUDIO_I2S_BYPASS_MODE_1_ENABLE
# define CXD56_I2S1_BYPASS 0 /* Disable */
#else
# define CXD56_I2S1_BYPASS 1 /* Enable */
#endif
/* I2S data rate of I2S1 */
#if defined(CONFIG_CXD56_I2S0)
# define CXD56_I2S1_DATA_RATE CONFIG_CXD56_AUDIO_I2S_RATE_1
#else
# define CXD56_I2S1_DATA_RATE 0
#endif
#define CXD56_XTAL_24_576MHZ 0
#define CXD56_XTAL_49_152MHZ 1
#ifdef CONFIG_CXD56_AUDIO_XTAL_SEL_49_152MHZ
# define CXD56_AUDIO_MCLK CXD56_XTAL_49_152MHZ
#else
# define CXD56_AUDIO_MCLK CXD56_XTAL_24_576MHZ
#endif
/* Drive strength levels */
#define CXD56_DS_WEAKEST 1
#define CXD56_DS_WEAKER 2
#define CXD56_DS_STRONGER 3
#define CXD56_DS_STRONGEST 4
/* Drive strength of global pin output-A */
#if defined(CONFIG_CXD56_AUDIO_GPO_A_WEAKEST)
# define CXD56_GPO_A_DS CXD56_DS_WEAKEST
#elif defined(CONFIG_CXD56_AUDIO_GPO_A_WEAKER)
# define CXD56_GPO_A_DS CXD56_DS_WEAKER
#elif defined(CONFIG_CXD56_AUDIO_GPO_A_STRONGER)
# define CXD56_GPO_A_DS CXD56_DS_STRONGER
#else
# define CXD56_GPO_A_DS CXD56_DS_STRONGEST
#endif
/* Drive strength of D/A converted data */
#if defined(CONFIG_CXD56_AUDIO_DA_DATA_WEAKEST)
# define CXD56_DA_DS CXD56_DS_WEAKEST
#elif defined(CONFIG_CXD56_AUDIO_DA_DATA_WEAKER)
# define CXD56_DA_DS CXD56_DS_WEAKER
#elif defined(CONFIG_CXD56_AUDIO_DA_DATA_STRONGER)
# define CXD56_DA_DS CXD56_DS_STRONGER
#else
# define CXD56_DA_DS CXD56_DS_STRONGEST
#endif
/* Drive strength of digital mic clock */
#if defined(CONFIG_CXD56_AUDIO_CLKOUT_DMIC_WEAKEST)
# define CXD56_DMIC_CLK_DS CXD56_DS_WEAKEST
#elif defined(CONFIG_CXD56_AUDIO_CLKOUT_DMIC_WEAKER)
# define CXD56_DMIC_CLK_DS CXD56_DS_WEAKER
#elif defined(CONFIG_CXD56_AUDIO_CLKOUT_DMIC_STRONGER)
# define CXD56_DMIC_CLK_DS CXD56_DS_STRONGER
#else
# define CXD56_DMIC_CLK_DS CXD56_DS_STRONGEST
#endif
/* Drive strength of master clock */
#if defined(CONFIG_CXD56_AUDIO_MCLKOUT_WEAKEST)
# define CXD56_MCLKOUT_DS CXD56_DS_WEAKEST
#elif defined(CONFIG_CXD56_AUDIO_MCLKOUT_WEAKER)
# define CXD56_MCLKOUT_DS CXD56_DS_WEAKER
#elif defined(CONFIG_CXD56_AUDIO_MCLKOUT_STRONGER)
# define CXD56_MCLKOUT_DS CXD56_DS_STRONGER
#else
# define CXD56_MCLKOUT_DS CXD56_DS_STRONGEST
#endif
/* Speaker time split on drive */
#if defined(CONFIG_CXD56_AUDIO_SP_SPLIT_LONGEST)
# define CXD56_SP_SPLIT_ON 4
#elif defined(CONFIG_CXD56_AUDIO_SP_SPLIT_LONG)
# define CXD56_SP_SPLIT_ON 3
#elif defined(CONFIG_CXD56_AUDIO_SP_SPLIT_SHORT)
# define CXD56_SP_SPLIT_ON 2
#else
# define CXD56_SP_SPLIT_ON 1
#endif
/* Speaker drive mode */
#if defined(CONFIG_CXD56_AUDIO_SP_DRV_LINEOUT)
# define CXD56_SP_DRIVER 0
#elif defined(CONFIG_CXD56_AUDIO_SP_DRV_1DRIVERT)
# define CXD56_SP_DRIVER 1
#elif defined(CONFIG_CXD56_AUDIO_SP_DRV_2DRIVERT)
# define CXD56_SP_DRIVER 2
#else
# define CXD56_SP_DRIVER 3
#endif
/* Mic bias voltage select */
#define CXD56_MIC_BIAS_20V 1
#define CXD56_MIC_BIAS_28V 2
#if defined(CONFIG_CXD56_AUDIO_MICBIAS_20V)
# define CXD56_MIC_BIAS CXD56_MIC_BIAS_20V
#else
# define CXD56_MIC_BIAS CXD56_MIC_BIAS_28V
#endif
/* Mic select */
#define CXD56_AUDIO_CFG_MIC CONFIG_CXD56_AUDIO_MIC_CHANNEL_SEL
/* Mic boot wait time */
#if defined(CONFIG_CXD56_AUDIO_MIC_BOOT_WAIT)
#define CXD56_MIC_BOOT_WAIT CONFIG_CXD56_AUDIO_MIC_BOOT_WAIT
#else
#define CXD56_MIC_BOOT_WAIT 1100
#endif
/* CIC filter input path */
#define CXD56_AUDIO_CFG_CIC_IN_SEL_NONE 0
#define CXD56_AUDIO_CFG_CIC_IN_SEL_CXD 1
#define CXD56_AUDIO_CFG_CIC_IN_SEL_DMICIF 2
#if defined(CONFIG_CXD56_AUDIO_CIC_IN_SEL_CXD)
# define CXD56_AUDIO_CFG_CIC_IN CXD56_AUDIO_CFG_CIC_IN_SEL_CXD
#elif defined (CONFIG_CXD56_AUDIO_CIC_IN_SEL_DMIC)
# define CXD56_AUDIO_CFG_CIC_IN CXD56_AUDIO_CFG_CIC_IN_SEL_DMICIF
#else
# define CXD56_AUDIO_CFG_CIC_IN CXD56_AUDIO_CFG_CIC_IN_SEL_NONE
#endif
/* DMA format */
#define CXD56_DMA_FORMAT_LR 0
#define CXD56_DMA_FORMAT_RL 1
#if defined(CONFIG_CXD56_AUDIO_DMA_DATA_FORMAT_LR)
# define CXD56_DMA_FORMAT CXD56_DMA_FORMAT_LR
#else
# define CXD56_DMA_FORMAT CXD56_DMA_FORMAT_RL
#endif
/* Audio buffer configuration */
#ifndef CONFIG_CXD56_AUDIO_BUFFER_SIZE
# define CONFIG_CXD56_AUDIO_BUFFER_SIZE 4096
#endif
#ifndef CONFIG_CXD56_AUDIO_NUM_BUFFERS
# define CONFIG_CXD56_AUDIO_NUM_BUFFERS 4
#endif
/* Queue helpers */
#define dq_get(q) dq_remfirst(q)
#define dq_put(q,n) dq_addlast((dq_entry_t*)(n),(q))
#define dq_put_back(q,n) dq_addfirst((dq_entry_t*)(n),(q))
#define dq_clear(q) \
do \
{ \
dq_remlast(q); \
} \
while (!dq_empty(q))
/****************************************************************************
* Public Types
****************************************************************************/
enum cxd56_dmahandle_e
{
CXD56_AUDIO_DMA_MIC,
CXD56_AUDIO_DMA_I2S0_DOWN,
CXD56_AUDIO_DMA_COUNT
};
typedef enum cxd56_dmahandle_e cxd56_dmahandle_t;
enum cxd56_devstate_e
{
CXD56_DEV_STATE_OFF,
CXD56_DEV_STATE_PAUSED,
CXD56_DEV_STATE_BUFFERING,
CXD56_DEV_STATE_STARTED,
CXD56_DEV_STATE_STOPPED
};
struct cxd56_dev_s
{
/* We are an audio lower half driver (We are also the upper "half" of
* the CS43L22 driver with respect to the board lower half driver).
*
* Terminology:
* Our "lower" half audio instances will be called dev for the publicly
* visible version and "priv" for the version that only this driver
* knows. From the point of view of this driver, it is the board lower
* "half" that is referred to as "lower".
*/
struct audio_lowerhalf_s dev; /* CXD56 audio lower half (this device) */
/* Our specific driver data goes here */
FAR const struct cxd56_lower_s *lower; /* Pointer to the board lower functions */
enum cxd56_devstate_e state; /* Driver state */
enum cxd56_dmahandle_e dma_handle; /* DMA handle */
struct file mq; /* Message queue for receiving messages */
char mqname[16]; /* Our message queue name */
pthread_t threadid; /* ID of our thread */
struct dq_queue_s up_pendq; /* Pending buffers from app to process */
struct dq_queue_s up_runq; /* Buffers from app being played */
#ifdef CONFIG_AUDIO_CXD56_SRC
struct dq_queue_s down_pendq; /* Pending SRC buffers to be DMA'd */
struct dq_queue_s down_runq; /* SRC buffers being processed */
struct dq_queue_s down_doneq; /* Done SRC buffers to be re-used */
#endif
uint32_t samplerate; /* Sample rate */
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
int16_t volume; /* Output volume {0..63} */
#endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */
uint8_t channels; /* Number of channels (1..8) */
uint16_t mic_gain; /* Mic gain */
uint16_t mic_dev; /* Mic device */
uint64_t mic_boot_start; /* Mic startup wait time */
uint8_t bitwidth; /* Bits per sample (16 or 24) */
bool muted; /* True: Output is muted */
bool running; /* True: Worker thread is running */
bool paused; /* True: Playing is paused */
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
bool terminating; /* True: Stop requested */
#endif
bool reserved; /* True: Device is reserved */
volatile int result; /* The result of the last transfer */
spinlock_t lock; /* Spinlock for SMP */
};
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#endif /* CONFIG_AUDIO */
#endif /* __DRIVERS_AUDIO_CXD56_H */
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