static void SetHDMIBuffer(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params)
{
kal_uint32 volatile u4tmpMrg1;
struct snd_pcm_runtime *runtime = substream->runtime;
AFE_BLOCK_T *pblock = &(pMemControl->rBlock);
pblock->pucPhysBufAddr = runtime->dma_addr;
pblock->pucVirtBufAddr = runtime->dma_area;
pblock->u4BufferSize = runtime->dma_bytes;
pblock->u4SampleNumMask = 0x001f; /* 32 byte align */
pblock->u4WriteIdx = 0;
pblock->u4DMAReadIdx = 0;
pblock->u4DataRemained = 0;
pblock->u4fsyncflag = false;
pblock->uResetFlag = true;
PRINTK_AUD_HDMI("%s, dma_bytes = %d, dma_area = %p, dma_addr = 0x%x\n",
__func__, pblock->u4BufferSize, pblock->pucVirtBufAddr,
pblock->pucPhysBufAddr);
Afe_Set_Reg(AFE_HDMI_BASE, pblock->pucPhysBufAddr, 0xffffffff);
Afe_Set_Reg(AFE_HDMI_END, pblock->pucPhysBufAddr + (pblock->u4BufferSize - 1),
0xffffffff);
u4tmpMrg1 = Afe_Get_Reg(AFE_HDMI_BASE);
u4tmpMrg1 &= 0x00ffffff;
PRINTK_AUD_HDMI("SetHDMIBuffer AFE_HDMI_BASE = 0x%x\n", u4tmpMrg1);
}
static int mtk_pcm_hdmi_silence(struct snd_pcm_substream *substream,
int channel, snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
{
PRINTK_AUD_HDMI("%s\n", __func__);
/* do nothing */
return 0;
}
static int mtk_asoc_pcm_hdmi_new(struct snd_soc_pcm_runtime *rtd)
{
int ret = 0;
pruntimehdmi = rtd;
PRINTK_AUD_HDMI("%s\n", __func__);
return ret;
}
static int mtk_hdmi_probe(struct platform_device *pdev)
{
PRINTK_AUD_HDMI("%s\n", __func__);
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
if (!pdev->dev.dma_mask)
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
if (pdev->dev.of_node)
dev_set_name(&pdev->dev, "%s", MT_SOC_HDMI_PCM);
PRINTK_AUD_HDMI("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
return snd_soc_register_platform(&pdev->dev, &mtk_hdmi_soc_platform);
}
static int mtk_pcm_hdmi_hw_free(struct snd_pcm_substream *substream)
{
PRINTK_AUD_HDMI("mtk_pcm_hdmi_hw_free\n");
if (fake_buffer)
return 0;
return snd_pcm_lib_free_pages(substream);
}
static snd_pcm_uframes_t mtk_pcm_hdmi_pointer(struct snd_pcm_substream *substream)
{
kal_int32 HW_memory_index = 0;
kal_int32 HW_Cur_ReadIdx = 0;
kal_uint32 Frameidx = 0;
kal_int32 Afe_consumed_bytes = 0;
AFE_BLOCK_T *Afe_Block = &(pMemControl->rBlock);
PRINTK_AUD_HDMI("%s Afe_Block->u4DMAReadIdx = 0x%x\n", __func__,
Afe_Block->u4DMAReadIdx);
if (GetMemoryPathEnable(Soc_Aud_Digital_Block_MEM_HDMI) == true) {
HW_Cur_ReadIdx = Afe_Get_Reg(AFE_HDMI_CUR);
if (HW_Cur_ReadIdx == 0) {
PRINTK_AUD_HDMI("[Auddrv] HW_Cur_ReadIdx == 0\n");
HW_Cur_ReadIdx = Afe_Block->pucPhysBufAddr;
}
HW_memory_index = (HW_Cur_ReadIdx - Afe_Block->pucPhysBufAddr);
if (HW_memory_index >= Afe_Block->u4DMAReadIdx)
Afe_consumed_bytes = HW_memory_index - Afe_Block->u4DMAReadIdx;
else {
Afe_consumed_bytes = Afe_Block->u4BufferSize + HW_memory_index
- Afe_Block->u4DMAReadIdx;
}
Afe_Block->u4DataRemained -= Afe_consumed_bytes;
Afe_Block->u4DMAReadIdx += Afe_consumed_bytes;
Afe_Block->u4DMAReadIdx %= Afe_Block->u4BufferSize;
PRINTK_AUD_HDMI
("[Auddrv] HW_Cur_ReadIdx = 0x%x, HW_memory_index = 0x%x, Afe_consumed_bytes = 0x%x\n",
HW_Cur_ReadIdx, HW_memory_index, Afe_consumed_bytes);
return audio_bytes_to_frame(substream, Afe_Block->u4DMAReadIdx);
}
Frameidx = audio_bytes_to_frame(substream, Afe_Block->u4DMAReadIdx);
return Frameidx;
}
static int mtk_pcm_hdmi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
int ret = 0;
pr_debug("mtk_pcm_hdmi_hw_params\n");
dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
dma_buf->dev.dev = substream->pcm->card->dev;
dma_buf->private_data = NULL;
if (fake_buffer) {
PRINTK_AUD_HDMI("[mtk_pcm_hdmi_hw_params] HDMI_dma_buf->area\n");
#ifdef _NO_SRAM_USAGE_
runtime->dma_area = HDMI_dma_buf->area;
runtime->dma_addr = HDMI_dma_buf->addr;
/* runtime->dma_bytes = HDMI_dma_buf->bytes; */
/* runtime->buffer_size = HDMI_dma_buf->bytes; */
runtime->dma_bytes = params_buffer_bytes(hw_params);
runtime->buffer_size = runtime->dma_bytes;
#else
runtime->dma_area = (unsigned char *)Get_Afe_SramBase_Pointer();
runtime->dma_addr = AFE_INTERNAL_SRAM_PHY_BASE;
runtime->dma_bytes = params_buffer_bytes(hw_params);
runtime->buffer_size = runtime->dma_bytes;
#endif
} else {
PRINTK_AUD_HDMI("[mtk_pcm_hdmi_hw_params] snd_pcm_lib_malloc_pages\n");
ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}
PRINTK_AUD_HDMI("%s, dma_bytes = %zu, dma_area = %p, dma_addr = 0x%lx\n",
__func__, substream->runtime->dma_bytes, substream->runtime->dma_area,
(long)substream->runtime->dma_addr);
SetHDMIBuffer(substream, hw_params);
return ret;
}
static snd_pcm_uframes_t mtk_pcm_hdmi_pointer(struct snd_pcm_substream *substream)
{
kal_int32 HW_memory_index = 0;
kal_int32 HW_Cur_ReadIdx = 0;
AFE_BLOCK_T *Afe_Block = &(pMemControl->rBlock);
PRINTK_AUD_HDMI("mtk_pcm_hdmi_pointer u4DMAReadIdx=%x\n",Afe_Block->u4DMAReadIdx);
if (pMemControl->interruptTrigger == 1)
{
HW_Cur_ReadIdx = Afe_Get_Reg(AFE_HDMI_CUR);
if (HW_Cur_ReadIdx == 0)
{
PRINTK_AUD_HDMI("[mtk_pcm_hdmi_pointer] HW_Cur_ReadIdx ==0 \n");
HW_Cur_ReadIdx = Afe_Block->pucPhysBufAddr;
}
HW_memory_index = (HW_Cur_ReadIdx - Afe_Block->pucPhysBufAddr);
Previous_Hw_cur = HW_memory_index;
PRINTK_AUD_HDMI("[mtk_pcm_hdmi_pointer] HW_Cur_ReadIdx =0x%x HW_memory_index = 0x%x pointer return = 0x%x \n", HW_Cur_ReadIdx, HW_memory_index,(HW_memory_index >> 2));
pMemControl->interruptTrigger = 0;
return (HW_memory_index >> 2);
}
static int mtk_pcm_hdmi_open(struct snd_pcm_substream *substream)
{
int ret = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
pr_debug("%s\n", __func__);
AudDrv_ANA_Clk_On();
AudDrv_Emi_Clk_On();
AudDrv_Clk_On();
runtime->hw = mtk_hdmi_hardware;
pMemControl = Get_Mem_ControlT(Soc_Aud_Digital_Block_MEM_HDMI);
memcpy((void *)(&(runtime->hw)), (void *)&mtk_hdmi_hardware,
sizeof(struct snd_pcm_hardware));
ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&constraints_sample_rates);
if (ret < 0) {
PRINTK_AUD_HDMI("snd_pcm_hw_constraint_integer failed\n");
return ret;
}
/* print for hw pcm information */
pr_debug("%s, runtime->rate = %d, channels = %d, substream->pcm->device = %d\n",
__func__, runtime->rate, runtime->channels, substream->pcm->device);
runtime->hw.info |= SNDRV_PCM_INFO_INTERLEAVED;
runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
runtime->hw.info |= SNDRV_PCM_INFO_MMAP_VALID;
PRINTK_AUD_HDMI("mtk_pcm_hdmi_open return\n");
return 0;
}
static int mtk_pcm_hdmi_trigger(struct snd_pcm_substream *substream, int cmd)
{
PRINTK_AUD_HDMI("mtk_pcm_hdmi_trigger cmd = %d\n", cmd);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
return mtk_pcm_hdmi_start(substream);
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
return mtk_pcm_hdmi_stop(substream);
}
return -EINVAL;
}
static int mtk_afe_hdmi_probe(struct snd_soc_platform *platform)
{
HDMI_dma_buf = kmalloc(sizeof(struct snd_dma_buffer), GFP_KERNEL);
memset((void *)HDMI_dma_buf, 0, sizeof(struct snd_dma_buffer));
PRINTK_AUD_HDMI("mtk_afe_hdmi_probe dma_alloc_coherent HDMI_dma_buf->addr = 0x%lx\n",
(long)HDMI_dma_buf->addr);
HDMI_dma_buf->area = dma_alloc_coherent(platform->dev, HDMI_MAX_BUFFER_SIZE,
&HDMI_dma_buf->addr, GFP_KERNEL); /* virtual pointer */
if (HDMI_dma_buf->area)
HDMI_dma_buf->bytes = HDMI_MAX_BUFFER_SIZE;
snd_soc_add_platform_controls(platform, Audio_snd_hdmi_controls,
ARRAY_SIZE(Audio_snd_hdmi_controls));
return 0;
}
static int __init mtk_hdmi_soc_platform_init(void)
{
int ret;
PRINTK_AUD_HDMI("%s\n", __func__);
#ifndef CONFIG_OF
soc_mtkhdmi_dev = platform_device_alloc(MT_SOC_HDMI_PCM, -1);
if (!soc_mtkhdmi_dev)
return -ENOMEM;
ret = platform_device_add(soc_mtkhdmi_dev);
if (ret != 0) {
platform_device_put(soc_mtkhdmi_dev);
return ret;
}
#endif
ret = platform_driver_register(&mtk_hdmi_driver);
return ret;
}
static int mtk_pcm_hdmi_copy(struct snd_pcm_substream *substream,
int channel, snd_pcm_uframes_t pos,
void __user *dst, snd_pcm_uframes_t count)
{
AFE_BLOCK_T *Afe_Block = NULL;
int copy_size = 0, Afe_WriteIdx_tmp;
unsigned long flags;
char *data_w_ptr = (char *)dst;
count = audio_frame_to_bytes(substream, count);
/* check which memif need to be write */
Afe_Block = &(pMemControl->rBlock);
/* handle for buffer management */
PRINTK_AUD_HDMI
("[%s] count = %d, WriteIdx = %x, ReadIdx = %x, DataRemained = %x\n",
__func__, (kal_uint32) count, Afe_Block->u4WriteIdx,
Afe_Block->u4DMAReadIdx, Afe_Block->u4DataRemained);
if (Afe_Block->u4BufferSize == 0) {
pr_err("%s: u4BufferSize = 0, Error!!!\n", __func__);
return 0;
}
spin_lock_irqsave(&auddrv_hdmi_lock, flags);
/* free space of the buffer */
copy_size = Afe_Block->u4BufferSize - Afe_Block->u4DataRemained;
spin_unlock_irqrestore(&auddrv_hdmi_lock, flags);
if (count <= copy_size) {
if (copy_size < 0)
copy_size = 0;
else
copy_size = count;
}
if (copy_size != 0) {
spin_lock_irqsave(&auddrv_hdmi_lock, flags);
Afe_WriteIdx_tmp = Afe_Block->u4WriteIdx;
spin_unlock_irqrestore(&auddrv_hdmi_lock, flags);
if (Afe_WriteIdx_tmp + copy_size < Afe_Block->u4BufferSize) { /* copy once */
if (!access_ok(VERIFY_READ, data_w_ptr, copy_size)) {
pr_warn("[%s] 0 ptr invalid data_w_ptr = %p, size = %d,", __func__,
data_w_ptr, copy_size);
pr_warn(" u4BufferSize = %d, u4DataRemained = %d\n",
Afe_Block->u4BufferSize, Afe_Block->u4DataRemained);
} else {
PRINTK_AUD_HDMI2
("[%s] memcpy Afe_Block->pucVirtBufAddr+Afe_WriteIdx=%x, data_w_ptr=%p, copy_size=%x\n",
Afe_Block->pucVirtBufAddr + Afe_WriteIdx_tmp, data_w_ptr, copy_size);
if (copy_from_user((Afe_Block->pucVirtBufAddr + Afe_WriteIdx_tmp),
data_w_ptr, copy_size)) {
pr_err("[%s] Fail copy from user\n", __func__);
return -1;
}
}
spin_lock_irqsave(&auddrv_hdmi_lock, flags);
Afe_Block->u4DataRemained += copy_size;
Afe_Block->u4WriteIdx = Afe_WriteIdx_tmp + copy_size;
Afe_Block->u4WriteIdx %= Afe_Block->u4BufferSize;
spin_unlock_irqrestore(&auddrv_hdmi_lock, flags);
data_w_ptr += copy_size;
count -= copy_size;
PRINTK_AUD_HDMI2
("[%s] finish 1, copy_size:%x, WriteIdx:%x, ReadIdx:%x, DataRemained:%x\n",
__func__, copy_size, Afe_Block->u4WriteIdx, Afe_Block->u4DMAReadIdx,
Afe_Block->u4DataRemained);
} else { /* copy twice */
kal_uint32 size_1 = 0, size_2 = 0;
size_1 = Afe_Block->u4BufferSize - Afe_WriteIdx_tmp;
size_2 = copy_size - size_1;
if (!access_ok(VERIFY_READ, data_w_ptr, size_1)) {
pr_warn("[%s] 1 ptr invalid data_w_ptr = %p, size_1 = %d,",
__func__, data_w_ptr, size_1);
pr_warn(" u4BufferSize = %d, u4DataRemained = %d\n",
Afe_Block->u4BufferSize, Afe_Block->u4DataRemained);
} else {
PRINTK_AUD_HDMI2
("[%s] mcmcpy Afe_Block->pucVirtBufAddr+Afe_WriteIdx=%x, data_w_ptr=%p, size_1=%x\n",
__func__, Afe_Block->pucVirtBufAddr + Afe_WriteIdx_tmp, data_w_ptr, size_1);
if ((copy_from_user((Afe_Block->pucVirtBufAddr + Afe_WriteIdx_tmp),
data_w_ptr, size_1))) {
pr_err("[%s] Fail 1 copy from user\n", __func__);
return -1;
}
}
spin_lock_irqsave(&auddrv_hdmi_lock, flags);
Afe_Block->u4DataRemained += size_1;
Afe_Block->u4WriteIdx = Afe_WriteIdx_tmp + size_1;
Afe_Block->u4WriteIdx %= Afe_Block->u4BufferSize;
Afe_WriteIdx_tmp = Afe_Block->u4WriteIdx;
spin_unlock_irqrestore(&auddrv_hdmi_lock, flags);
if (!access_ok(VERIFY_READ, data_w_ptr + size_1, size_2)) {
pr_warn("[%s] 2 ptr invalid data_w_ptr = %p, size_1 = %d, size_2 = %d,",
__func__, data_w_ptr, size_1, size_2);
pr_warn(" u4BufferSize = %d, u4DataRemained = %d\n",
Afe_Block->u4BufferSize, Afe_Block->u4DataRemained);
} else {
PRINTK_AUD_HDMI2
("[%s] mcmcpy Afe_Block->pucVirtBufAddr+Afe_WriteIdx=%x,\n",
__func__, Afe_Block->pucVirtBufAddr + Afe_WriteIdx_tmp);
PRINTK_AUD_HDMI2
(" data_w_ptr+size_1=%p, size_2=%x\n", data_w_ptr + size_1, size_2);
if ((copy_from_user((Afe_Block->pucVirtBufAddr + Afe_WriteIdx_tmp),
(data_w_ptr + size_1), size_2))) {
pr_err("[%s] Fail 2 copy from user\n", __func__);
return -1;
}
}
spin_lock_irqsave(&auddrv_hdmi_lock, flags);
Afe_Block->u4DataRemained += size_2;
Afe_Block->u4WriteIdx = Afe_WriteIdx_tmp + size_2;
Afe_Block->u4WriteIdx %= Afe_Block->u4BufferSize;
spin_unlock_irqrestore(&auddrv_hdmi_lock, flags);
count -= copy_size;
data_w_ptr += copy_size;
PRINTK_AUD_HDMI2
("[%s] finish 2, copy size:%x, WriteIdx:%x, ReadIdx:%x, DataRemained:%x\n",
__func__, copy_size, Afe_Block->u4WriteIdx, Afe_Block->u4DMAReadIdx,
Afe_Block->u4DataRemained);
}
}
return 0;
}
static void __exit mtk_hdmi_soc_platform_exit(void)
{
PRINTK_AUD_HDMI("%s\n", __func__);
platform_driver_unregister(&mtk_hdmi_driver);
}
static int mtk_hdmi_remove(struct platform_device *pdev)
{
PRINTK_AUD_HDMI("%s\n", __func__);
snd_soc_unregister_platform(&pdev->dev);
return 0;
}
static struct page *mtk_pcm_page(struct snd_pcm_substream *substream, unsigned long offset)
{
PRINTK_AUD_HDMI("%s\n", __func__);
return virt_to_page(dummy_page[substream->stream]); /* the same page */
}
