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path: root/sound/soc/amd/acp-pcm-dma.c
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Diffstat (limited to 'sound/soc/amd/acp-pcm-dma.c')
-rw-r--r--sound/soc/amd/acp-pcm-dma.c214
1 files changed, 154 insertions, 60 deletions
diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index 77203841c535..e359938e3d7e 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -224,13 +224,11 @@ static void set_acp_sysmem_dma_descriptors(void __iomem *acp_mmio,
switch (asic_type) {
case CHIP_STONEY:
dmadscr[i].xfer_val |=
- BIT(22) |
(ACP_DMA_ATTR_SHARED_MEM_TO_DAGB_GARLIC << 16) |
(size / 2);
break;
default:
dmadscr[i].xfer_val |=
- BIT(22) |
(ACP_DMA_ATTR_SHAREDMEM_TO_DAGB_ONION << 16) |
(size / 2);
}
@@ -322,22 +320,87 @@ static void config_acp_dma(void __iomem *acp_mmio,
struct audio_substream_data *rtd,
u32 asic_type)
{
+ u16 ch_acp_sysmem, ch_acp_i2s;
+
acp_pte_config(acp_mmio, rtd->pg, rtd->num_of_pages,
rtd->pte_offset);
+
+ if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ ch_acp_sysmem = rtd->ch1;
+ ch_acp_i2s = rtd->ch2;
+ } else {
+ ch_acp_i2s = rtd->ch1;
+ ch_acp_sysmem = rtd->ch2;
+ }
/* Configure System memory <-> ACP SRAM DMA descriptors */
set_acp_sysmem_dma_descriptors(acp_mmio, rtd->size,
rtd->direction, rtd->pte_offset,
- rtd->ch1, rtd->sram_bank,
+ ch_acp_sysmem, rtd->sram_bank,
rtd->dma_dscr_idx_1, asic_type);
/* Configure ACP SRAM <-> I2S DMA descriptors */
set_acp_to_i2s_dma_descriptors(acp_mmio, rtd->size,
rtd->direction, rtd->sram_bank,
- rtd->destination, rtd->ch2,
+ rtd->destination, ch_acp_i2s,
rtd->dma_dscr_idx_2, asic_type);
}
+static void acp_dma_cap_channel_enable(void __iomem *acp_mmio,
+ u16 cap_channel)
+{
+ u32 val, ch_reg, imr_reg, res_reg;
+
+ switch (cap_channel) {
+ case CAP_CHANNEL1:
+ ch_reg = mmACP_I2SMICSP_RER1;
+ res_reg = mmACP_I2SMICSP_RCR1;
+ imr_reg = mmACP_I2SMICSP_IMR1;
+ break;
+ case CAP_CHANNEL0:
+ default:
+ ch_reg = mmACP_I2SMICSP_RER0;
+ res_reg = mmACP_I2SMICSP_RCR0;
+ imr_reg = mmACP_I2SMICSP_IMR0;
+ break;
+ }
+ val = acp_reg_read(acp_mmio,
+ mmACP_I2S_16BIT_RESOLUTION_EN);
+ if (val & ACP_I2S_MIC_16BIT_RESOLUTION_EN) {
+ acp_reg_write(0x0, acp_mmio, ch_reg);
+ /* Set 16bit resolution on capture */
+ acp_reg_write(0x2, acp_mmio, res_reg);
+ }
+ val = acp_reg_read(acp_mmio, imr_reg);
+ val &= ~ACP_I2SMICSP_IMR1__I2SMICSP_RXDAM_MASK;
+ val &= ~ACP_I2SMICSP_IMR1__I2SMICSP_RXFOM_MASK;
+ acp_reg_write(val, acp_mmio, imr_reg);
+ acp_reg_write(0x1, acp_mmio, ch_reg);
+}
+
+static void acp_dma_cap_channel_disable(void __iomem *acp_mmio,
+ u16 cap_channel)
+{
+ u32 val, ch_reg, imr_reg;
+
+ switch (cap_channel) {
+ case CAP_CHANNEL1:
+ imr_reg = mmACP_I2SMICSP_IMR1;
+ ch_reg = mmACP_I2SMICSP_RER1;
+ break;
+ case CAP_CHANNEL0:
+ default:
+ imr_reg = mmACP_I2SMICSP_IMR0;
+ ch_reg = mmACP_I2SMICSP_RER0;
+ break;
+ }
+ val = acp_reg_read(acp_mmio, imr_reg);
+ val |= ACP_I2SMICSP_IMR1__I2SMICSP_RXDAM_MASK;
+ val |= ACP_I2SMICSP_IMR1__I2SMICSP_RXFOM_MASK;
+ acp_reg_write(val, acp_mmio, imr_reg);
+ acp_reg_write(0x0, acp_mmio, ch_reg);
+}
+
/* 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;
@@ -356,10 +419,8 @@ static void acp_dma_start(void __iomem *acp_mmio, u16 ch_num)
switch (ch_num) {
case ACP_TO_I2S_DMA_CH_NUM:
- case ACP_TO_SYSRAM_CH_NUM:
case I2S_TO_ACP_DMA_CH_NUM:
case ACP_TO_I2S_DMA_BT_INSTANCE_CH_NUM:
- case ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM:
case I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM:
dma_ctrl |= ACP_DMA_CNTL_0__DMAChIOCEn_MASK;
break;
@@ -368,8 +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);
}
@@ -613,6 +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;
@@ -644,32 +709,39 @@ 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);
}
- if ((intr_flag & BIT(ACP_TO_SYSRAM_CH_NUM)) != 0) {
- valid_irq = true;
- acp_reg_write((intr_flag & BIT(ACP_TO_SYSRAM_CH_NUM)) << 16,
- acp_mmio, mmACP_EXTERNAL_INTR_STAT);
- }
-
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,
acp_mmio, mmACP_EXTERNAL_INTR_STAT);
}
- if ((intr_flag & BIT(ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM)) != 0) {
- valid_irq = true;
- acp_reg_write((intr_flag &
- BIT(ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM)) << 16,
- acp_mmio, mmACP_EXTERNAL_INTR_STAT);
- }
-
if (valid_irq)
return IRQ_HANDLED;
else
@@ -773,7 +845,10 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
if (WARN_ON(!rtd))
return -EINVAL;
- rtd->i2s_instance = pinfo->i2s_instance;
+ if (pinfo) {
+ rtd->i2s_instance = pinfo->i2s_instance;
+ rtd->capture_channel = pinfo->capture_channel;
+ }
if (adata->asic_type == CHIP_STONEY) {
val = acp_reg_read(adata->acp_mmio,
mmACP_I2S_16BIT_RESOLUTION_EN);
@@ -841,8 +916,8 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
switch (rtd->i2s_instance) {
case I2S_BT_INSTANCE:
rtd->pte_offset = ACP_ST_BT_CAPTURE_PTE_OFFSET;
- rtd->ch1 = ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM;
- rtd->ch2 = I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM;
+ rtd->ch1 = I2S_TO_ACP_DMA_BT_INSTANCE_CH_NUM;
+ rtd->ch2 = ACP_TO_SYSRAM_BT_INSTANCE_CH_NUM;
rtd->sram_bank = ACP_SRAM_BANK_4_ADDRESS;
rtd->destination = FROM_BLUETOOTH;
rtd->dma_dscr_idx_1 = CAPTURE_START_DMA_DESCR_CH10;
@@ -851,13 +926,14 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
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;
adata->capture_i2sbt_stream = substream;
break;
case I2S_SP_INSTANCE:
default:
rtd->pte_offset = ACP_CAPTURE_PTE_OFFSET;
- rtd->ch1 = ACP_TO_SYSRAM_CH_NUM;
- rtd->ch2 = I2S_TO_ACP_DMA_CH_NUM;
+ rtd->ch1 = I2S_TO_ACP_DMA_CH_NUM;
+ rtd->ch2 = ACP_TO_SYSRAM_CH_NUM;
switch (adata->asic_type) {
case CHIP_STONEY:
rtd->pte_offset = ACP_ST_CAPTURE_PTE_OFFSET;
@@ -874,6 +950,7 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
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;
adata->capture_i2ssp_stream = substream;
}
}
@@ -927,6 +1004,8 @@ static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream)
u32 buffersize;
u32 pos = 0;
u64 bytescount = 0;
+ u16 dscr;
+ u32 period_bytes, delay;
struct snd_pcm_runtime *runtime = substream->runtime;
struct audio_substream_data *rtd = runtime->private_data;
@@ -934,12 +1013,25 @@ static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream)
if (!rtd)
return -EINVAL;
- buffersize = frames_to_bytes(runtime, runtime->buffer_size);
- bytescount = acp_get_byte_count(rtd);
-
- if (bytescount > rtd->bytescount)
- 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);
+ if (dscr == rtd->dma_dscr_idx_1)
+ pos = period_bytes;
+ else
+ pos = 0;
+ bytescount = acp_get_byte_count(rtd);
+ if (bytescount > rtd->bytescount)
+ bytescount -= rtd->bytescount;
+ delay = do_div(bytescount, period_bytes);
+ runtime->delay = bytes_to_frames(runtime, delay);
+ } else {
+ buffersize = frames_to_bytes(runtime, runtime->buffer_size);
+ bytescount = acp_get_byte_count(rtd);
+ if (bytescount > rtd->bytescount)
+ bytescount -= rtd->bytescount;
+ pos = do_div(bytescount, buffersize);
+ }
return bytes_to_frames(runtime, pos);
}
@@ -953,16 +1045,24 @@ static int acp_dma_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct audio_substream_data *rtd = runtime->private_data;
+ u16 ch_acp_sysmem, ch_acp_i2s;
if (!rtd)
return -EINVAL;
+ if (rtd->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ ch_acp_sysmem = rtd->ch1;
+ ch_acp_i2s = rtd->ch2;
+ } else {
+ ch_acp_i2s = rtd->ch1;
+ ch_acp_sysmem = rtd->ch2;
+ }
config_acp_dma_channel(rtd->acp_mmio,
- rtd->ch1,
+ ch_acp_sysmem,
rtd->dma_dscr_idx_1,
NUM_DSCRS_PER_CHANNEL, 0);
config_acp_dma_channel(rtd->acp_mmio,
- rtd->ch2,
+ ch_acp_i2s,
rtd->dma_dscr_idx_2,
NUM_DSCRS_PER_CHANNEL, 0);
return 0;
@@ -971,7 +1071,6 @@ static int acp_dma_prepare(struct snd_pcm_substream *substream)
static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd)
{
int ret;
- u64 bytescount = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct audio_substream_data *rtd = runtime->private_data;
@@ -982,37 +1081,32 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
- bytescount = acp_get_byte_count(rtd);
- if (rtd->bytescount == 0)
- rtd->bytescount = bytescount;
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- acp_dma_start(rtd->acp_mmio, rtd->ch1);
- acp_dma_start(rtd->acp_mmio, rtd->ch2);
+ rtd->bytescount = acp_get_byte_count(rtd);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ if (rtd->capture_channel == CAP_CHANNEL0) {
+ acp_dma_cap_channel_disable(rtd->acp_mmio,
+ CAP_CHANNEL1);
+ acp_dma_cap_channel_enable(rtd->acp_mmio,
+ CAP_CHANNEL0);
+ }
+ if (rtd->capture_channel == CAP_CHANNEL1) {
+ acp_dma_cap_channel_disable(rtd->acp_mmio,
+ CAP_CHANNEL0);
+ 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->ch2);
- acp_dma_start(rtd->acp_mmio, rtd->ch1);
+ acp_dma_start(rtd->acp_mmio, rtd->ch1, true);
+ acp_dma_start(rtd->acp_mmio, rtd->ch2, true);
}
ret = 0;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
- /* For playback, non circular dma should be stopped first
- * i.e Sysram to acp dma transfer channel(rtd->ch1) should be
- * stopped before stopping cirular dma which is acp sram to i2s
- * fifo dma transfer channel(rtd->ch2). Where as in Capture
- * scenario, i2s fifo to acp sram dma channel(rtd->ch2) stopped
- * first before stopping acp sram to sysram which is circular
- * dma(rtd->ch1).
- */
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- acp_dma_stop(rtd->acp_mmio, rtd->ch1);
- ret = acp_dma_stop(rtd->acp_mmio, rtd->ch2);
- } else {
- acp_dma_stop(rtd->acp_mmio, rtd->ch2);
- ret = acp_dma_stop(rtd->acp_mmio, rtd->ch1);
- }
- rtd->bytescount = 0;
+ acp_dma_stop(rtd->acp_mmio, rtd->ch2);
+ ret = acp_dma_stop(rtd->acp_mmio, rtd->ch1);
break;
default:
ret = -EINVAL;
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 16:33:39 +0000