From: "Mukunda, Vijendar" <vijendar.muku...@amd.com>
Give position on ACP->SYSMEM DMA channel for
the number of bytes that have been transferred on
the current descriptor under service.
Signed-off-by: Vijendar Mukunda <vijendar.muku...@amd.com>
Signed-off-by: Akshu Agrawal <akshu.agra...@amd.com>
---
sound/soc/amd/acp-pcm-dma.c | 34 ++++++++++++++++++++++------------
sound/soc/amd/acp.h | 3 +++
2 files changed, 25 insertions(+), 12 deletions(-)
diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index 816abd6..6240a77 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -922,10 +922,9 @@ static int acp_dma_hw_params(struct snd_pcm_substream
*substream,
rtd->destination = FROM_BLUETOOTH;
rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH10;
rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH11;
- rtd->byte_cnt_high_reg_offset =
- mmACP_I2S_BT_RECEIVE_BYTE_CNT_HIGH;
- rtd->byte_cnt_low_reg_offset =
- mmACP_I2S_BT_RECEIVE_BYTE_CNT_LOW;
+ rtd->dma_curr_dscr = mmACP_DMA_CUR_DSCR_11;
+ rtd->cur_trans_cnt = mmACP_DMA_CUR_TRANS_CNT_11;
+ rtd->end_dma_dscr = CAPTURE_END_DMA_DESCR_CH10;
adata->capture_i2sbt_stream = substream;
break;
case I2S_SP_INSTANCE:
@@ -945,10 +944,9 @@ static int acp_dma_hw_params(struct snd_pcm_substream
*substream,
rtd->destination = FROM_ACP_I2S_1;
rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH14;
rtd->dma_dscr_idx_2 = CAPTURE_START_DMA_DESCR_CH15;
- rtd->byte_cnt_high_reg_offset =
- mmACP_I2S_RECEIVED_BYTE_CNT_HIGH;
- rtd->byte_cnt_low_reg_offset =
- mmACP_I2S_RECEIVED_BYTE_CNT_LOW;
+ rtd->dma_curr_dscr = mmACP_DMA_CUR_DSCR_15;
+ rtd->cur_trans_cnt = mmACP_DMA_CUR_TRANS_CNT_15;
+ rtd->end_dma_dscr = CAPTURE_END_DMA_DESCR_CH14;
adata->capture_i2ssp_stream = substream;
}
}
@@ -1002,6 +1000,9 @@ static snd_pcm_uframes_t acp_dma_pointer(struct
snd_pcm_substream *substream)
u32 buffersize;
u32 pos = 0;
u64 bytescount = 0;
+ u32 dma_count = 0;
+ u16 dscr;
+ u32 period_bytes;
struct snd_pcm_runtime *runtime = substream->runtime;
struct audio_substream_data *rtd = runtime->private_data;
@@ -1010,10 +1011,19 @@ static snd_pcm_uframes_t acp_dma_pointer(struct
snd_pcm_substream *substream)
return -EINVAL;
buffersize = frames_to_bytes(runtime, runtime->buffer_size);
- bytescount = acp_get_byte_count(rtd);
-
- bytescount -= rtd->bytescount;
- pos = do_div(bytescount, buffersize);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ period_bytes = frames_to_bytes(runtime, runtime->period_size);
+ dscr = acp_reg_read(rtd->acp_mmio, rtd->dma_curr_dscr);
+ dma_count = acp_reg_read(rtd->acp_mmio, rtd->cur_trans_cnt);
+ if (dscr == rtd->end_dma_dscr)
+ dma_count += period_bytes;
+ pos = dma_count % buffersize;
+ } else {
+ bytescount = acp_get_byte_count(rtd);
+ if (bytescount > rtd->bytescount)
+ bytescount -= rtd->bytescount;
+ pos = do_div(bytescount, buffersize);
+ }
return bytes_to_frames(runtime, pos);
}
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
index 0a2240b..cf7c0b9 100644
--- a/sound/soc/amd/acp.h
+++ b/sound/soc/amd/acp.h
@@ -134,10 +134,13 @@ struct audio_substream_data {
u16 destination;
u16 dma_dscr_idx_1;
u16 dma_dscr_idx_2;
+ u16 end_dma_dscr;
u32 pte_offset;
u32 sram_bank;
u32 byte_cnt_high_reg_offset;
u32 byte_cnt_low_reg_offset;
+ u32 dma_curr_dscr;
+ u32 cur_trans_cnt;
uint64_t size;
u64 bytescount;
void __iomem *acp_mmio;
--
1.9.1
