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rt-thread-official/bsp/stm32/stm32mp157a-st-discovery/board/ports/audio/drv_sound.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-07-31 Zero-Free first implementation
* 2020-07-02 thread-liu Porting for STM32MP1
*/
#include "board.h"
#include "drv_cs42l51.h"
#ifdef BSP_USING_AUDIO
//#define DRV_DEBUG
#define LOG_TAG "drv.audio"
#include <drv_log.h>
#define SOUND_BUS_NAME "i2c4"
/* SYSRAM */
#define TX_FIFO_SIZE (4096)
#if defined(__ARMCC_VERSION)
rt_uint8_t AUDIO_TX_FIFO[TX_FIFO_SIZE] __attribute__((at(0x2FFC3000)));
#elif defined(__ICCARM__)
#pragma location = 0x2FFC3000
rt_uint8_t AUDIO_TX_FIFO[TX_FIFO_SIZE];
#elif defined ( __GNUC__ )
rt_uint8_t AUDIO_TX_FIFO[TX_FIFO_SIZE] __attribute__((at(0x2FFC3000)));
#endif
struct sound_device
{
struct rt_audio_device audio;
struct rt_audio_configure replay_config;
rt_uint8_t *tx_fifo;
rt_uint8_t volume;
};
static struct sound_device snd_dev = {0};
SAI_HandleTypeDef hsai_BlockA2 = {0};
DMA_HandleTypeDef hdma_sai2_a = {0};
SAI_HandleTypeDef hsai_BlockB2 = {0};
DMA_HandleTypeDef hdma_sai2_b = {0};
void HAL_SAI_MspInit(SAI_HandleTypeDef* hsai)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
/* SAI2 */
if(hsai->Instance==SAI2_Block_A)
{
/* Peripheral clock enable */
if(IS_ENGINEERING_BOOT_MODE())
{
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_SAI2;
PeriphClkInit.Sai2ClockSelection = RCC_SAI2CLKSOURCE_PLL3_Q;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_SAI2_CLK_ENABLE();
/**SAI2_A_Block_A GPIO Configuration
PE0 ------> SAI2_MCLK_A
PI7 ------> SAI2_FS_A
PI5 ------> SAI2_SCK_A
PI6 ------> SAI2_SD_A
*/
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF10_SAI2;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_5|GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF10_SAI2;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
/* Configure DMA used for SAI2 */
__HAL_RCC_DMAMUX_CLK_ENABLE();
__HAL_RCC_DMA2_CLK_ENABLE();
hdma_sai2_a.Instance = DMA2_Stream5;
hdma_sai2_a.Init.Request = DMA_REQUEST_SAI2_A;
hdma_sai2_a.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_sai2_a.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_sai2_a.Init.MemInc = DMA_MINC_ENABLE;
hdma_sai2_a.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_sai2_a.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_sai2_a.Init.Mode = DMA_CIRCULAR;
hdma_sai2_a.Init.Priority = DMA_PRIORITY_HIGH;
hdma_sai2_a.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
HAL_DMA_DeInit(&hdma_sai2_a);
if (HAL_DMA_Init(&hdma_sai2_a) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(hsai,hdmatx,hdma_sai2_a);
__HAL_DMA_ENABLE(&hdma_sai2_a);
HAL_NVIC_SetPriority(DMA2_Stream5_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream5_IRQn);
}
if(hsai->Instance==SAI2_Block_B)
{
/* Peripheral clock enable */
if(IS_ENGINEERING_BOOT_MODE())
{
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_SAI2;
PeriphClkInit.Sai2ClockSelection = RCC_SAI2CLKSOURCE_PLL3_Q;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_SAI2_CLK_ENABLE();
/**SAI2_B_Block_B GPIO Configuration
PF11 ------> SAI2_SD_B
*/
GPIO_InitStruct.Pin = GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF10_SAI2;
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
__HAL_RCC_DMAMUX_CLK_ENABLE();
__HAL_RCC_DMA2_CLK_ENABLE();
/* Peripheral DMA init*/
hdma_sai2_b.Instance = DMA2_Stream4;
hdma_sai2_b.Init.Request = DMA_REQUEST_SAI2_B;
hdma_sai2_b.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_sai2_b.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_sai2_b.Init.MemInc = DMA_MINC_ENABLE;
hdma_sai2_b.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_sai2_b.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_sai2_b.Init.Mode = DMA_CIRCULAR;
hdma_sai2_b.Init.Priority = DMA_PRIORITY_HIGH;
hdma_sai2_b.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
hdma_sai2_b.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
hdma_sai2_b.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_sai2_b.Init.PeriphBurst = DMA_PBURST_SINGLE;
__HAL_LINKDMA(hsai,hdmarx,hdma_sai2_b);
HAL_DMA_DeInit(&hdma_sai2_b);
if (HAL_DMA_Init(&hdma_sai2_b) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(hsai,hdmarx,hdma_sai2_b);
__HAL_DMA_ENABLE(&hdma_sai2_b);
HAL_NVIC_SetPriority(DMA2_Stream4_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream4_IRQn);
}
}
void HAL_SAI_MspDeInit(SAI_HandleTypeDef* hsai)
{
/* SAI2 */
if(hsai->Instance==SAI2_Block_A)
{
/* Peripheral clock disable */
__HAL_RCC_SAI2_CLK_DISABLE();
/**SAI2_A_Block_A GPIO Configuration
PE0 ------> SAI2_MCLK_A
PI7 ------> SAI2_FS_A
PI5 ------> SAI2_SCK_A
PI6 ------> SAI2_SD_A
*/
HAL_GPIO_DeInit(GPIOE, GPIO_PIN_0);
HAL_GPIO_DeInit(GPIOI, GPIO_PIN_7|GPIO_PIN_5|GPIO_PIN_6);
HAL_DMA_DeInit(hsai->hdmarx);
HAL_DMA_DeInit(hsai->hdmatx);
}
if(hsai->Instance==SAI2_Block_B)
{
/* Peripheral clock disable */
__HAL_RCC_SAI2_CLK_DISABLE();
/**SAI2_B_Block_B GPIO Configuration
PF11 ------> SAI2_SD_B
*/
HAL_GPIO_DeInit(GPIOF, GPIO_PIN_11);
HAL_DMA_DeInit(hsai->hdmarx);
HAL_DMA_DeInit(hsai->hdmatx);
}
}
static void rt_hw_sai2a_init(void)
{
HAL_SAI_DeInit(&hsai_BlockA2);
hsai_BlockA2.Instance = SAI2_Block_A;
hsai_BlockA2.Init.Protocol = SAI_FREE_PROTOCOL;
hsai_BlockA2.Init.AudioMode = SAI_MODEMASTER_TX;
hsai_BlockA2.Init.DataSize = SAI_DATASIZE_16;
hsai_BlockA2.Init.FirstBit = SAI_FIRSTBIT_MSB;
hsai_BlockA2.Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE;
hsai_BlockA2.Init.Synchro = SAI_ASYNCHRONOUS;
hsai_BlockA2.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;
hsai_BlockA2.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;
hsai_BlockA2.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
hsai_BlockA2.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_44K;
hsai_BlockA2.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
hsai_BlockA2.Init.MonoStereoMode = SAI_STEREOMODE;
hsai_BlockA2.Init.CompandingMode = SAI_NOCOMPANDING;
hsai_BlockA2.Init.TriState = SAI_OUTPUT_NOTRELEASED;
hsai_BlockA2.Init.PdmInit.Activation = DISABLE;
hsai_BlockA2.Init.PdmInit.MicPairsNbr = 0;
hsai_BlockA2.Init.PdmInit.ClockEnable = SAI_PDM_CLOCK1_ENABLE;
hsai_BlockA2.FrameInit.FrameLength = 64;
hsai_BlockA2.FrameInit.ActiveFrameLength = 32;
hsai_BlockA2.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
hsai_BlockA2.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
hsai_BlockA2.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
hsai_BlockA2.SlotInit.FirstBitOffset = 0;
hsai_BlockA2.SlotInit.SlotSize = SAI_SLOTSIZE_32B;
hsai_BlockA2.SlotInit.SlotNumber = 2;
hsai_BlockA2.SlotInit.SlotActive = SAI_SLOTACTIVE_0 | SAI_SLOTACTIVE_1;
if(HAL_OK != HAL_SAI_Init(&hsai_BlockA2))
{
Error_Handler();
}
/* Enable SAI to generate clock used by audio driver */
__HAL_SAI_ENABLE(&hsai_BlockA2);
}
void DMA2_Stream5_IRQHandler(void)
{
HAL_DMA_IRQHandler(&hdma_sai2_a);
}
void HAL_SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai)
{
if (hsai == &hsai_BlockA2)
{
rt_audio_tx_complete(&snd_dev.audio);
}
}
void HAL_SAI_TxCpltCallback(SAI_HandleTypeDef *hsai)
{
if (hsai == &hsai_BlockA2)
{
rt_audio_tx_complete(&snd_dev.audio);
}
}
void SAIA_Frequency_Set(uint32_t frequency)
{
return;
}
void SAIA_Channels_Set(uint8_t channels)
{
if (channels == 1)
{
hsai_BlockA2.Init.MonoStereoMode = SAI_MONOMODE;
}
else
{
hsai_BlockA2.Init.MonoStereoMode = SAI_STEREOMODE;
}
__HAL_SAI_DISABLE(&hsai_BlockA2);
HAL_SAI_Init(&hsai_BlockA2);
__HAL_SAI_ENABLE(&hsai_BlockA2);
}
/**
* RT-Thread Audio Device Driver Interface
*/
static rt_err_t sound_getcaps(struct rt_audio_device *audio, struct rt_audio_caps *caps)
{
rt_err_t result = RT_EOK;
struct sound_device *snd_dev;
RT_ASSERT(audio != RT_NULL);
snd_dev = (struct sound_device *)audio->parent.user_data;
switch (caps->main_type)
{
case AUDIO_TYPE_QUERY: /* qurey the types of hw_codec device */
{
switch (caps->sub_type)
{
case AUDIO_TYPE_QUERY:
caps->udata.mask = AUDIO_TYPE_OUTPUT | AUDIO_TYPE_MIXER;
break;
default:
result = -RT_ERROR;
break;
}
break;
}
case AUDIO_TYPE_OUTPUT: /* Provide capabilities of OUTPUT unit */
{
switch (caps->sub_type)
{
case AUDIO_DSP_PARAM:
caps->udata.config.samplerate = snd_dev->replay_config.samplerate;
caps->udata.config.channels = snd_dev->replay_config.channels;
caps->udata.config.samplebits = snd_dev->replay_config.samplebits;
break;
case AUDIO_DSP_SAMPLERATE:
caps->udata.config.samplerate = snd_dev->replay_config.samplerate;
break;
case AUDIO_DSP_CHANNELS:
caps->udata.config.channels = snd_dev->replay_config.channels;
break;
case AUDIO_DSP_SAMPLEBITS:
caps->udata.config.samplebits = snd_dev->replay_config.samplebits;
break;
default:
result = -RT_ERROR;
break;
}
break;
}
case AUDIO_TYPE_MIXER: /* report the Mixer Units */
{
switch (caps->sub_type)
{
case AUDIO_MIXER_QUERY:
caps->udata.mask = AUDIO_MIXER_VOLUME;
break;
case AUDIO_MIXER_VOLUME:
caps->udata.value = cs42l51_drv.get_volume();
break;
default:
result = -RT_ERROR;
break;
}
break;
}
default:
result = -RT_ERROR;
break;
}
return result;
}
static rt_err_t sound_configure(struct rt_audio_device *audio, struct rt_audio_caps *caps)
{
rt_err_t result = RT_EOK;
struct sound_device *snd_dev;
RT_ASSERT(audio != RT_NULL);
snd_dev = (struct sound_device *)audio->parent.user_data;
switch (caps->main_type)
{
case AUDIO_TYPE_MIXER:
{
switch (caps->sub_type)
{
case AUDIO_MIXER_VOLUME:
{
rt_uint8_t volume = caps->udata.value;
cs42l51_drv.set_volume(volume);
snd_dev->volume = volume;
LOG_D("set volume %d", volume);
break;
}
default:
result = -RT_ERROR;
break;
}
break;
}
case AUDIO_TYPE_OUTPUT:
{
switch (caps->sub_type)
{
case AUDIO_DSP_PARAM:
{
/* set samplerate */
SAIA_Frequency_Set(caps->udata.config.samplerate);
/* set channels */
SAIA_Channels_Set(caps->udata.config.channels);
/* save configs */
snd_dev->replay_config.samplerate = caps->udata.config.samplerate;
snd_dev->replay_config.channels = caps->udata.config.channels;
snd_dev->replay_config.samplebits = caps->udata.config.samplebits;
LOG_D("set samplerate %d", snd_dev->replay_config.samplerate);
break;
}
case AUDIO_DSP_SAMPLERATE:
{
SAIA_Frequency_Set(caps->udata.config.samplerate);
snd_dev->replay_config.samplerate = caps->udata.config.samplerate;
LOG_D("set samplerate %d", snd_dev->replay_config.samplerate);
break;
}
case AUDIO_DSP_CHANNELS:
{
SAIA_Channels_Set(caps->udata.config.channels);
snd_dev->replay_config.channels = caps->udata.config.channels;
LOG_D("set channels %d", snd_dev->replay_config.channels);
break;
}
case AUDIO_DSP_SAMPLEBITS:
{
/* not support */
snd_dev->replay_config.samplebits = caps->udata.config.samplebits;
break;
}
default:
result = -RT_ERROR;
break;
}
break;
}
default:
break;
}
return result;
}
static rt_err_t sound_init(struct rt_audio_device *audio)
{
rt_err_t result = RT_EOK;
struct sound_device *snd_dev;
RT_ASSERT(audio != RT_NULL);
snd_dev = (struct sound_device *)audio->parent.user_data;
cs42l51_drv.init(OUT_HEADPHONE, SOUND_BUS_NAME, 40);
if (cs42l51_drv.read_id() != RT_EOK)
{
LOG_E("can't find low level audio device!");
return -RT_ERROR;
}
rt_hw_sai2a_init();
/* set default params */
SAIA_Frequency_Set(snd_dev->replay_config.samplerate);
SAIA_Channels_Set(snd_dev->replay_config.channels);
return result;
}
static rt_err_t sound_start(struct rt_audio_device *audio, int stream)
{
struct sound_device *snd_dev;
RT_ASSERT(audio != RT_NULL);
snd_dev = (struct sound_device *)audio->parent.user_data;
if (stream == AUDIO_STREAM_REPLAY)
{
LOG_D("open sound device");
cs42l51_drv.init(OUT_HEADPHONE, SOUND_BUS_NAME, 60); /* set work mode */
cs42l51_drv.play();
if (HAL_SAI_Transmit_DMA(&hsai_BlockA2, snd_dev->tx_fifo, TX_FIFO_SIZE / 2) != HAL_OK)
{
return -RT_ERROR;
}
}
return RT_EOK;
}
static rt_err_t sound_stop(struct rt_audio_device *audio, int stream)
{
RT_ASSERT(audio != RT_NULL);
if (stream == AUDIO_STREAM_REPLAY)
{
HAL_SAI_DMAStop(&hsai_BlockA2);
HAL_SAI_Abort(&hsai_BlockA2);
cs42l51_drv.stop();
LOG_D("close sound device");
}
return RT_EOK;
}
static void sound_buffer_info(struct rt_audio_device *audio, struct rt_audio_buf_info *info)
{
struct sound_device *snd_dev;
RT_ASSERT(audio != RT_NULL);
snd_dev = (struct sound_device *)audio->parent.user_data;
/**
* TX_FIFO
* +----------------+----------------+
* | block1 | block2 |
* +----------------+----------------+
* \ block_size /
*/
info->buffer = snd_dev->tx_fifo;
info->total_size = TX_FIFO_SIZE;
info->block_size = TX_FIFO_SIZE / 2;
info->block_count = 2;
}
static struct rt_audio_ops snd_ops =
{
.getcaps = sound_getcaps,
.configure = sound_configure,
.init = sound_init,
.start = sound_start,
.stop = sound_stop,
.transmit = RT_NULL,
.buffer_info = sound_buffer_info,
};
int rt_hw_sound_init(void)
{
rt_err_t result = RT_EOK;
struct rt_device *device = RT_NULL;
rt_memset(AUDIO_TX_FIFO, 0, TX_FIFO_SIZE);
snd_dev.tx_fifo = AUDIO_TX_FIFO;
/* init default configuration */
snd_dev.replay_config.samplerate = 44100;
snd_dev.replay_config.channels = 2;
snd_dev.replay_config.samplebits = 16;
snd_dev.volume = 55;
/* register sound device */
snd_dev.audio.ops = &snd_ops;
result = rt_audio_register(&snd_dev.audio, "sound0", RT_DEVICE_FLAG_WRONLY, &snd_dev);
if (result != RT_EOK)
{
device = &(snd_dev.audio.parent);
rt_device_unregister(device);
LOG_E("sound device init error!");
return -RT_ERROR;
}
return RT_EOK;
}
INIT_APP_EXPORT(rt_hw_sound_init);
#endif
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