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rt-thread-official/bsp/hpmicro/libraries/drivers/drv_dao.c

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/*
* Copyright (c) 2022 HPMicro
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include <rtthread.h>
#include <rtdevice.h>
#define DBG_TAG "dao"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#ifdef BSP_USING_DAO
#include "drivers/audio.h"
#include "hpm_i2s_drv.h"
#include "hpm_dao_drv.h"
#include "board.h"
#include "drv_dao.h"
#ifdef HPMSOC_HAS_HPMSDK_DMAV2
#include "hpm_dmav2_drv.h"
#else
#include "hpm_dma_drv.h"
#endif
#include "hpm_dmamux_drv.h"
#include "hpm_l1c_drv.h"
#include "hpm_clock_drv.h"
#include "hpm_dma_mgr.h"
/* DAO connect to I2S1 TX*/
#define DAO_DMA_REQ HPM_DMA_SRC_I2S1_TX
#define DAO_I2S_DATA_LINE 0
struct hpm_dao
{
struct rt_audio_device audio;
struct rt_audio_configure play_config;
rt_uint8_t* tx_fifo;
};
struct hpm_dao hpm_dao_dev = { 0 };
static dma_resource_t dma_resource = { 0 };
void dao_dma_tc_callback(DMA_Type *ptr, uint32_t channel, void *user_data)
{
rt_audio_tx_complete(&hpm_dao_dev.audio);
}
static rt_err_t hpm_dao_getcaps(struct rt_audio_device* audio, struct rt_audio_caps* caps)
{
rt_err_t result = RT_EOK;
RT_ASSERT(audio != RT_NULL);
struct hpm_dao* hpm_audio = (struct hpm_dao*)audio->parent.user_data;
switch(caps->main_type)
{
case AUDIO_TYPE_OUTPUT:
{
switch(caps->sub_type)
{
case AUDIO_DSP_PARAM:
caps->udata.config.samplerate = hpm_audio->play_config.samplerate;
caps->udata.config.channels = hpm_audio->play_config.channels;
caps->udata.config.samplebits = hpm_audio->play_config.samplebits;
break;
case AUDIO_DSP_SAMPLERATE:
caps->udata.config.samplerate = hpm_audio->play_config.samplerate;
break;
case AUDIO_DSP_CHANNELS:
caps->udata.config.channels = hpm_audio->play_config.channels;
break;
case AUDIO_DSP_SAMPLEBITS:
caps->udata.config.samplebits = hpm_audio->play_config.samplebits;
break;
default:
result = -RT_ERROR;
break;
}
break;
}
default:
result = -RT_ERROR;
break;
}
return result;
}
static bool i2s_is_enabled(I2S_Type *ptr)
{
return ((ptr->CTRL & I2S_CTRL_I2S_EN_MASK) != 0);
}
static rt_err_t hpm_dao_set_samplerate(uint32_t samplerate)
{
uint32_t mclk_hz;
i2s_transfer_config_t transfer;
mclk_hz = clock_get_frequency(clock_i2s1);
i2s_get_default_transfer_config_for_dao(&transfer);
transfer.sample_rate = samplerate;
bool is_enabled = i2s_is_enabled(DAO_I2S);
if (is_enabled) {
dma_abort_channel(dma_resource.base, dma_resource.channel);
}
if (status_success != i2s_config_tx(DAO_I2S, mclk_hz, &transfer))
{
LOG_E("dao_i2s configure transfer failed\n");
return -RT_ERROR;
}
if (is_enabled)
{
i2s_enable(DAO_I2S);
}
return RT_EOK;
}
static rt_err_t hpm_dao_configure(struct rt_audio_device* audio, struct rt_audio_caps* caps)
{
rt_err_t result = RT_EOK;
RT_ASSERT(audio != RT_NULL);
struct hpm_dao* hpm_audio = (struct hpm_dao*)audio->parent.user_data;
switch(caps->main_type)
{
case AUDIO_TYPE_OUTPUT:
{
switch(caps->sub_type)
{
case AUDIO_DSP_SAMPLERATE:
{
hpm_audio->play_config.samplerate = caps->udata.config.samplerate;
hpm_dao_set_samplerate(caps->udata.config.samplerate);
break;
}
default:
result = -RT_ERROR;
break;
}
}
default:
result = -RT_ERROR;
break;
}
return result;
}
static rt_err_t hpm_dao_init(struct rt_audio_device* audio)
{
RT_ASSERT(audio != RT_NULL);
rt_uint32_t mclk_hz;
i2s_config_t i2s_config;
i2s_transfer_config_t transfer;
dao_config_t dao_config;
init_dao_pins();
board_init_dao_clock();
i2s_get_default_config(DAO_I2S, &i2s_config);
i2s_init(DAO_I2S, &i2s_config);
i2s_enable_tx_dma_request(DAO_I2S);
mclk_hz = clock_get_frequency(clock_i2s1);
i2s_get_default_transfer_config_for_dao(&transfer);
if (status_success != i2s_config_tx(DAO_I2S, mclk_hz, &transfer))
{
LOG_E("dao_i2s configure transfer failed\n");
return -RT_ERROR;
}
/* init audio configure */
hpm_dao_dev.play_config.channels = 2U; /* fix to 2 channels*/
hpm_dao_dev.play_config.samplebits = 32U; /* fix to 32 sample bits */
hpm_dao_dev.play_config.samplerate = 48000U; /* default 48KHz sample rate */
dao_get_default_config(HPM_DAO, &dao_config);
dao_config.enable_mono_output = true;
if (status_success != dao_init(HPM_DAO, &dao_config)) {
LOG_E("dao init failed\n");
return -RT_ERROR;
}
return RT_EOK;
}
static rt_err_t hpm_dao_start(struct rt_audio_device* audio, int stream)
{
RT_ASSERT(audio != RT_NULL);
i2s_disable(DAO_I2S);
i2s_disable_tx_dma_request(DAO_I2S);
dao_stop(HPM_DAO);
dao_software_reset(HPM_DAO);
if (dma_mgr_request_resource(&dma_resource) == status_success) {
uint8_t dmamux_ch;
dma_mgr_install_chn_tc_callback(&dma_resource, dao_dma_tc_callback, NULL);
dma_mgr_enable_dma_irq_with_priority(&dma_resource, 1);
dmamux_ch = DMA_SOC_CHN_TO_DMAMUX_CHN(dma_resource.base, dma_resource.channel);
dmamux_config(HPM_DMAMUX, dmamux_ch, DAO_DMA_REQ, true);
} else {
LOG_E("no dma resource available for DAO transfer.\n");
return -RT_ERROR;
}
/* fill 2 dummy data, it is suitable for 1/2 channel of audio */
i2s_reset_tx(DAO_I2S);
if (i2s_fill_tx_dummy_data(DAO_I2S, DAO_I2S_DATA_LINE, 2) != status_success) {
return -RT_ERROR;
}
rt_audio_tx_complete(audio);
i2s_enable(DAO_I2S);
i2s_enable_tx_dma_request(DAO_I2S);
dao_start(HPM_DAO);
return RT_EOK;
}
static rt_err_t hpm_dao_stop(struct rt_audio_device* audio, int stream)
{
RT_ASSERT(audio != RT_NULL);
dao_stop(HPM_DAO);
i2s_stop(DAO_I2S);
dma_abort_channel(dma_resource.base, dma_resource.channel);
dma_mgr_release_resource(&dma_resource);
return RT_EOK;
}
static rt_ssize_t hpm_dao_transmit(struct rt_audio_device* audio, const void* writeBuf, void* readBuf, rt_size_t size)
{
RT_ASSERT(audio != RT_NULL);
dma_channel_config_t ch_config = {0};
dma_default_channel_config(dma_resource.base, &ch_config);
ch_config.src_addr = core_local_mem_to_sys_address(HPM_CORE0, (uint32_t)writeBuf);
ch_config.dst_addr = (uint32_t)&DAO_I2S->TXD[DAO_I2S_DATA_LINE];
ch_config.src_width = DMA_TRANSFER_WIDTH_WORD;
ch_config.dst_width = DMA_TRANSFER_WIDTH_WORD;
ch_config.src_addr_ctrl = DMA_ADDRESS_CONTROL_INCREMENT;
ch_config.dst_addr_ctrl = DMA_ADDRESS_CONTROL_FIXED;
ch_config.size_in_byte = size;
ch_config.dst_mode = DMA_HANDSHAKE_MODE_HANDSHAKE;
ch_config.src_burst_size = DMA_NUM_TRANSFER_PER_BURST_1T;
if (l1c_dc_is_enabled()) {
/* cache writeback for sent buff */
l1c_dc_writeback((uint32_t)writeBuf, size);
}
if (status_success != dma_setup_channel(dma_resource.base, dma_resource.channel, &ch_config, true)) {
return 0;
}
return size;
}
static void hpm_dao_buffer_info(struct rt_audio_device* audio, struct rt_audio_buf_info* info)
{
RT_ASSERT(audio != RT_NULL);
/**
* AUD_FIFO
* +----------------+----------------+
* | block1 | block2 |
* +----------------+----------------+
* \ block_size /
*/
info->buffer = hpm_dao_dev.tx_fifo;
info->total_size = DAO_FIFO_SIZE;
info->block_size = DAO_FIFO_SIZE / 2;
info->block_count = 2;
}
static struct rt_audio_ops hpm_dao_ops =
{
.getcaps = hpm_dao_getcaps,
.configure = hpm_dao_configure,
.init = hpm_dao_init,
.start = hpm_dao_start,
.stop = hpm_dao_stop,
.transmit = hpm_dao_transmit,
.buffer_info = hpm_dao_buffer_info,
};
ATTR_ALIGN(HPM_L1C_CACHELINE_SIZE) uint8_t dao_tx_fifo[DAO_FIFO_SIZE];
int rt_hw_dao_init(void)
{
hpm_dao_dev.tx_fifo = dao_tx_fifo;
hpm_dao_dev.audio.ops = &hpm_dao_ops;
LOG_I("audio dao registered.\n");
LOG_I("!!!Note: dao depends on i2s1, they share clock.\n");
rt_audio_register(&hpm_dao_dev.audio, "dao", RT_DEVICE_FLAG_WRONLY, &hpm_dao_dev);
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_dao_init);
#endif /* BSP_USING_DAO */
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