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rt-thread-official/bsp/imxrt1052-evk/drivers/drv_codec.c

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#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "drv_codec.h"
#include "fsl_wm8960.h"
#include <fsl_sai.h>
#include <fsl_sai_edma.h>
#include <fsl_lpi2c.h>
#include <fsl_dmamux.h>
#define DEMO_CODEC_WM8960
#define DEMO_SAI SAI1
#define DEMO_SAI_IRQ SAI1_IRQn
#define SAI_TxIRQHandler SAI1_IRQHandler
/* Select Audio/Video PLL (786.48 MHz) as sai1 clock source */
#define DEMO_SAI1_CLOCK_SOURCE_SELECT (2U)
/* Clock pre divider for sai1 clock source */
#define DEMO_SAI1_CLOCK_SOURCE_PRE_DIVIDER (1U)
/* Clock divider for sai1 clock source */
#define DEMO_SAI1_CLOCK_SOURCE_DIVIDER (63U)
/* Get frequency of sai1 clock */
#define DEMO_SAI_CLK_FREQ (CLOCK_GetFreq(kCLOCK_AudioPllClk) / (DEMO_SAI1_CLOCK_SOURCE_DIVIDER + 1U) / (DEMO_SAI1_CLOCK_SOURCE_PRE_DIVIDER + 1U))
/* I2C instance and clock */
#define DEMO_I2C LPI2C1
/* Select USB1 PLL (480 MHz) as master lpi2c clock source */
#define DEMO_LPI2C_CLOCK_SOURCE_SELECT (0U)
/* Clock divider for master lpi2c clock source */
#define DEMO_LPI2C_CLOCK_SOURCE_DIVIDER (5U)
/* Get frequency of lpi2c clock */
#define DEMO_I2C_CLK_FREQ ((CLOCK_GetFreq(kCLOCK_Usb1PllClk) / 8) / (DEMO_LPI2C_CLOCK_SOURCE_DIVIDER + 1U))
/* DMA */
#define DMAMUX0 DMAMUX
#define EXAMPLE_DMA DMA0
#define EXAMPLE_CHANNEL (0U)
#define EXAMPLE_SAI_TX_SOURCE kDmaRequestMuxSai1Tx
struct imxcodec
{
I2S_Type *sai;
sai_edma_handle_t txHandle;
wm8960_handle_t codecHandle;
edma_handle_t dmaHandle;
lpi2c_master_handle_t i2cHandle;
sai_transfer_format_t format;
};
static void _InitPins(void)
{
CLOCK_EnableClock(kCLOCK_Iomuxc);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_00_LPI2C1_SCL, 1);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_01_LPI2C1_SDA, 1);
IOMUXC_SetPinConfig( IOMUXC_GPIO_AD_B1_00_LPI2C1_SCL, 0xD8B0u);
IOMUXC_SetPinConfig( IOMUXC_GPIO_AD_B1_01_LPI2C1_SDA, 0xD8B0u);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_09_SAI1_MCLK, 1U);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_13_SAI1_TX_DATA00, 1U);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_14_SAI1_TX_BCLK, 1U);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_15_SAI1_TX_SYNC, 1U);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_09_SAI1_MCLK, 0x10B0u);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_13_SAI1_TX_DATA00, 0x10B0u);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_14_SAI1_TX_BCLK, 0x10B0u);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_15_SAI1_TX_SYNC, 0x10B0u);
}
static void BOARD_EnableSaiMclkOutput(bool enable)
{
if (enable)
{
IOMUXC_GPR->GPR1 |= IOMUXC_GPR_GPR1_SAI1_MCLK_DIR_MASK;
}
else
{
IOMUXC_GPR->GPR1 &= (~IOMUXC_GPR_GPR1_SAI1_MCLK_DIR_MASK);
}
}
static void saidma_callback(I2S_Type *base, sai_edma_handle_t *handle, status_t status, void *userData)
{
int ind = 0;
rt_uint8_t *saddr;
ind = handle->queueDriver;
saddr = (rt_uint8_t*)handle->saiQueue[ind].data;
rt_audio_tx_complete(userData, saddr);
}
/*********************************************************************************************************
** Audio device
*********************************************************************************************************/
static rt_err_t icodec_getcaps(struct rt_audio_device *audio,struct rt_audio_caps *caps)
{
rt_err_t result = RT_EOK;
struct imxcodec *icodec = (struct imxcodec *)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:
if (audio->replay == NULL)
{
result = -RT_ERROR;
break;
}
caps->udata.config.channels = 1;
caps->udata.config.samplefmt = 1;
caps->udata.config.samplerate = 1;
caps->udata.config.samplefmts = 1;
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 | AUDIO_MIXER_DIGITAL | AUDIO_MIXER_LINE;
break;
case AUDIO_MIXER_VOLUME:
caps->udata.value = WM8960_GetVolume(&icodec->codecHandle, kWM8960_ModuleDAC);
break;
case AUDIO_MIXER_DIGITAL:
break;
case AUDIO_MIXER_LINE:
break;
default:
result = -RT_ERROR;
break;
}
break;
default:
result = -RT_ERROR;
break;
}
return result;
}
static rt_err_t icodec_configure(struct rt_audio_device *audio,struct rt_audio_caps *caps)
{
rt_err_t result = RT_EOK;
struct imxcodec *icodec = (struct imxcodec *)audio->parent.user_data;
switch (caps->main_type)
{
case AUDIO_TYPE_MIXER:
{
switch (caps->sub_type)
{
case AUDIO_MIXER_VOLUME:
{
WM8960_SetVolume(&icodec->codecHandle, kWM8960_ModuleDAC,
caps->udata.value);
}
break;
default:
{
result = -RT_ERROR;
}
break;
}
}
break;
case AUDIO_TYPE_OUTPUT:
{
switch (caps->sub_type)
{
case AUDIO_DSP_PARAM:
{
} break;
case AUDIO_DSP_SAMPLERATE:
{
int rate = caps->udata.value;
icodec->format.sampleRate_Hz = rate;
SAI_TxSetFormat(icodec->sai, &icodec->format, icodec->format.masterClockHz, icodec->format.masterClockHz);
}
break;
default:
{
result = -RT_ERROR;
}
break;
}
}
break;
default:
result = -RT_ERROR;
break;
}
return result;
}
static rt_err_t icodec_init(struct rt_audio_device *audio)
{
sai_config_t config;
uint32_t mclkSourceClockHz = 0U;
edma_config_t dmaConfig = {0};
lpi2c_master_config_t i2cConfig = {0};
uint32_t i2cSourceClock;
clock_audio_pll_config_t audioPllConfig = {32, 1, 77, 100};
struct imxcodec *icodec = audio->parent.user_data;
sai_transfer_format_t *format;
icodec->sai = DEMO_SAI;
format = &icodec->format;
_InitPins();
CLOCK_InitAudioPll(&audioPllConfig);
/*Clock setting for LPI2C*/
CLOCK_SetMux(kCLOCK_Lpi2cMux, DEMO_LPI2C_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Lpi2cDiv, DEMO_LPI2C_CLOCK_SOURCE_DIVIDER);
/*Clock setting for SAI1*/
CLOCK_SetMux(kCLOCK_Sai1Mux, DEMO_SAI1_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Sai1PreDiv, DEMO_SAI1_CLOCK_SOURCE_PRE_DIVIDER);
CLOCK_SetDiv(kCLOCK_Sai1Div, DEMO_SAI1_CLOCK_SOURCE_DIVIDER);
/*Enable MCLK clock*/
BOARD_EnableSaiMclkOutput(true);
/* Create EDMA handle */
EDMA_GetDefaultConfig(&dmaConfig);
EDMA_Init(EXAMPLE_DMA, &dmaConfig);
EDMA_CreateHandle(&icodec->dmaHandle, EXAMPLE_DMA, EXAMPLE_CHANNEL);
DMAMUX_Init(DMAMUX0);
DMAMUX_SetSource(DMAMUX0, EXAMPLE_CHANNEL, EXAMPLE_SAI_TX_SOURCE);
DMAMUX_EnableChannel(DMAMUX0, EXAMPLE_CHANNEL);
/* Init SAI module */
SAI_TxGetDefaultConfig(&config);
SAI_TxInit(DEMO_SAI, &config);
/* Configure the audio format */
format->bitWidth = kSAI_WordWidth16bits;
format->channel = 0U;
format->sampleRate_Hz = kSAI_SampleRate48KHz;
format->masterClockHz = DEMO_SAI_CLK_FREQ;
format->protocol = config.protocol;
format->stereo = kSAI_Stereo;
format->isFrameSyncCompact = 0;
format->watermark = FSL_FEATURE_SAI_FIFO_COUNT / 2U;
/* Configure Sgtl5000 I2C */
icodec->codecHandle.base = DEMO_I2C;
icodec->codecHandle.i2cHandle = &icodec->i2cHandle;
i2cSourceClock = DEMO_I2C_CLK_FREQ;
LPI2C_MasterGetDefaultConfig(&i2cConfig);
LPI2C_MasterInit(DEMO_I2C, &i2cConfig, i2cSourceClock);
LPI2C_MasterTransferCreateHandle(DEMO_I2C, &icodec->i2cHandle, NULL, NULL);
WM8960_Init(&icodec->codecHandle, NULL);
WM8960_ConfigDataFormat(&icodec->codecHandle, format->masterClockHz, format->sampleRate_Hz, format->bitWidth);
SAI_TransferTxCreateHandleEDMA(icodec->sai, &icodec->txHandle, saidma_callback, audio, &icodec->dmaHandle);
mclkSourceClockHz = DEMO_SAI_CLK_FREQ;
SAI_TransferTxSetFormatEDMA(icodec->sai, &icodec->txHandle, format, mclkSourceClockHz, format->masterClockHz);
return RT_EOK;
}
static rt_err_t icodec_shutdown(struct rt_audio_device *audio)
{
return RT_EOK;
}
rt_err_t icodec_start(struct rt_audio_device *audio,int stream)
{
return RT_EOK;
}
rt_err_t icodec_stop(struct rt_audio_device *audio,int stream)
{
return RT_EOK;
}
static rt_err_t icodec_suspend(struct rt_audio_device *audio,int stream)
{
return RT_EOK;
}
static rt_err_t icodec_resume(struct rt_audio_device *audio,int stream)
{
return RT_EOK;
}
static rt_err_t icodec_control (struct rt_audio_device *audio, int cmd, void *args)
{
rt_err_t result = RT_EOK;
switch (cmd)
{
case AUDIO_CTL_HWRESET:
break;
default:
result = -RT_ERROR;
break;
}
return result;
}
static rt_size_t icodec_transmit(struct rt_audio_device *audio, const void *writeBuf, void *readBuf, rt_size_t size)
{
struct imxcodec *icodec = (struct imxcodec *)audio->parent.user_data;
if(writeBuf != RT_NULL)
{
sai_transfer_t xfer;
xfer.data = (uint8_t *)writeBuf;
xfer.dataSize = size;
if (size%32 == 0)
icodec->txHandle.count = 16;
else
icodec->txHandle.count = 1;
rt_hw_cpu_dcache_ops(RT_HW_CACHE_FLUSH, (void*)writeBuf, size);
if (SAI_TransferSendEDMA(icodec->sai, &icodec->txHandle, &xfer) != kStatus_Success)
return 0;
return size;
}
return 0;
}
static struct imxcodec _g_imxcodec;
static struct rt_audio_device _g_audio_device;
const struct rt_audio_ops _g_audio_ops =
{
.getcaps = icodec_getcaps,
.configure = icodec_configure,
.init = icodec_init,
.shutdown = icodec_shutdown,
.start = icodec_start,
.stop = icodec_stop,
.suspend = icodec_suspend,
.resume = icodec_resume,
.control = icodec_control,
.transmit = icodec_transmit,
};
int rt_hw_codec_init(void)
{
int result;
struct rt_audio_device *audio = &_g_audio_device;
audio->ops = (struct rt_audio_ops*)&_g_audio_ops;
_g_imxcodec.sai = DEMO_SAI;
result = rt_audio_register(audio,"sound0", RT_DEVICE_FLAG_WRONLY, &_g_imxcodec);
return result;
}
INIT_DEVICE_EXPORT(rt_hw_codec_init);
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