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-rw-r--r--sound/soc/amd/acp-pcm-dma.c36
1 files changed, 31 insertions, 5 deletions
diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index 94bcf69008df..816abd65a6ed 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -400,7 +400,7 @@ static void acp_dma_cap_channel_disable(void __iomem *acp_mmio,
}
/* Start a given DMA channel transfer */
-static void acp_dma_start(void __iomem *acp_mmio, u16 ch_num)
+static void acp_dma_start(void __iomem *acp_mmio, u16 ch_num, bool is_circular)
{
u32 dma_ctrl;
@@ -429,8 +429,11 @@ static void acp_dma_start(void __iomem *acp_mmio, u16 ch_num)
break;
}
- /* circular for both DMA channel */
- dma_ctrl |= ACP_DMA_CNTL_0__Circular_DMA_En_MASK;
+ /* enable for ACP to SRAM DMA channel */
+ if (is_circular == true)
+ dma_ctrl |= ACP_DMA_CNTL_0__Circular_DMA_En_MASK;
+ else
+ dma_ctrl &= ~ACP_DMA_CNTL_0__Circular_DMA_En_MASK;
acp_reg_write(dma_ctrl, acp_mmio, mmACP_DMA_CNTL_0 + ch_num);
}
@@ -674,6 +677,7 @@ static int acp_deinit(void __iomem *acp_mmio)
/* ACP DMA irq handler routine for playback, capture usecases */
static irqreturn_t dma_irq_handler(int irq, void *arg)
{
+ u16 dscr_idx;
u32 intr_flag, ext_intr_status;
struct audio_drv_data *irq_data;
void __iomem *acp_mmio;
@@ -705,6 +709,15 @@ static irqreturn_t dma_irq_handler(int irq, void *arg)
if ((intr_flag & BIT(I2S_TO_ACP_DMA_CH_NUM)) != 0) {
valid_irq = true;
+ if (acp_reg_read(acp_mmio, mmACP_DMA_CUR_DSCR_14) ==
+ CAPTURE_START_DMA_DESCR_CH15)
+ dscr_idx = CAPTURE_END_DMA_DESCR_CH14;
+ else
+ dscr_idx = CAPTURE_START_DMA_DESCR_CH14;
+ config_acp_dma_channel(acp_mmio, ACP_TO_SYSRAM_CH_NUM, dscr_idx,
+ 1, 0);
+ acp_dma_start(acp_mmio, ACP_TO_SYSRAM_CH_NUM, false);
+
snd_pcm_period_elapsed(irq_data->capture_i2ssp_stream);
acp_reg_write((intr_flag & BIT(I2S_TO_ACP_DMA_CH_NUM)) << 16,
acp_mmio, mmACP_EXTERNAL_INTR_STAT);
@@ -712,6 +725,17 @@ static irqreturn_t dma_irq_handler(int irq, void *arg)
if ((intr_flag & BIT(I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM)) != 0) {
valid_irq = true;
+ if (acp_reg_read(acp_mmio, mmACP_DMA_CUR_DSCR_10) ==
+ CAPTURE_START_DMA_DESCR_CH11)
+ dscr_idx = CAPTURE_END_DMA_DESCR_CH10;
+ else
+ dscr_idx = CAPTURE_START_DMA_DESCR_CH10;
+ config_acp_dma_channel(acp_mmio,
+ ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM,
+ dscr_idx, 1, 0);
+ acp_dma_start(acp_mmio, ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM,
+ false);
+
snd_pcm_period_elapsed(irq_data->capture_i2sbt_stream);
acp_reg_write((intr_flag &
BIT(I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM)) << 16,
@@ -1053,9 +1077,11 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd)
acp_dma_cap_channel_enable(rtd->acp_mmio,
CAP_CHANNEL1);
}
+ acp_dma_start(rtd->acp_mmio, rtd->ch1, true);
+ } else {
+ acp_dma_start(rtd->acp_mmio, rtd->ch1, true);
+ acp_dma_start(rtd->acp_mmio, rtd->ch2, true);
}
- acp_dma_start(rtd->acp_mmio, rtd->ch1);
- acp_dma_start(rtd->acp_mmio, rtd->ch2);
ret = 0;
break;
case SNDRV_PCM_TRIGGER_STOP: