[PATCH v1] ASoC: amd: acp: Audio is not resuming after s0ix

From: Raghavendra Prasad Mallela

Date: Tue Dec 02 2025 - 13:06:46 EST


From: Hemalatha Pinnamreddy <hemalatha.pinnamreddy2@xxxxxxx>

Audio fails to resume after system exits suspend mode
due to accessing incorrect ring buffer address during
resume. This patch resolves issue by selecting correct
address based on the ACP version.

Signed-off-by: Hemalatha Pinnamreddy <hemalatha.pinnamreddy2@xxxxxxx>
Signed-off-by: Raghavendra Prasad Mallela <raghavendraprasad.mallela@xxxxxxx>
---
sound/soc/amd/acp/acp-legacy-common.c | 32 +++++++++++++++++++++------
1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/sound/soc/amd/acp/acp-legacy-common.c b/sound/soc/amd/acp/acp-legacy-common.c
index 3078f459e005..da80c761d657 100644
--- a/sound/soc/amd/acp/acp-legacy-common.c
+++ b/sound/soc/amd/acp/acp-legacy-common.c
@@ -208,7 +208,7 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
struct acp_resource *rsrc = chip->rsrc;
struct acp_stream *stream = substream->runtime->private_data;
u32 reg_dma_size, reg_fifo_size, reg_fifo_addr;
- u32 phy_addr, acp_fifo_addr, ext_int_ctrl;
+ u32 phy_addr = 0, acp_fifo_addr, ext_int_ctrl;
unsigned int dir = substream->stream;

switch (dai->driver->id) {
@@ -219,7 +219,10 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
SP_PB_FIFO_ADDR_OFFSET;
reg_fifo_addr = ACP_I2S_TX_FIFOADDR(chip);
reg_fifo_size = ACP_I2S_TX_FIFOSIZE(chip);
- phy_addr = I2S_SP_TX_MEM_WINDOW_START + stream->reg_offset;
+ if (chip->acp_rev >= ACP70_PCI_ID)
+ phy_addr = ACP7x_I2S_SP_TX_MEM_WINDOW_START;
+ else
+ phy_addr = I2S_SP_TX_MEM_WINDOW_START + stream->reg_offset;
writel(phy_addr, chip->base + ACP_I2S_TX_RINGBUFADDR(chip));
} else {
reg_dma_size = ACP_I2S_RX_DMA_SIZE(chip);
@@ -227,7 +230,10 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
SP_CAPT_FIFO_ADDR_OFFSET;
reg_fifo_addr = ACP_I2S_RX_FIFOADDR(chip);
reg_fifo_size = ACP_I2S_RX_FIFOSIZE(chip);
- phy_addr = I2S_SP_RX_MEM_WINDOW_START + stream->reg_offset;
+ if (chip->acp_rev >= ACP70_PCI_ID)
+ phy_addr = ACP7x_I2S_SP_RX_MEM_WINDOW_START;
+ else
+ phy_addr = I2S_SP_RX_MEM_WINDOW_START + stream->reg_offset;
writel(phy_addr, chip->base + ACP_I2S_RX_RINGBUFADDR(chip));
}
break;
@@ -238,7 +244,10 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
BT_PB_FIFO_ADDR_OFFSET;
reg_fifo_addr = ACP_BT_TX_FIFOADDR(chip);
reg_fifo_size = ACP_BT_TX_FIFOSIZE(chip);
- phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
+ if (chip->acp_rev >= ACP70_PCI_ID)
+ phy_addr = ACP7x_I2S_BT_TX_MEM_WINDOW_START;
+ else
+ phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
writel(phy_addr, chip->base + ACP_BT_TX_RINGBUFADDR(chip));
} else {
reg_dma_size = ACP_BT_RX_DMA_SIZE(chip);
@@ -246,7 +255,10 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
BT_CAPT_FIFO_ADDR_OFFSET;
reg_fifo_addr = ACP_BT_RX_FIFOADDR(chip);
reg_fifo_size = ACP_BT_RX_FIFOSIZE(chip);
- phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
+ if (chip->acp_rev >= ACP70_PCI_ID)
+ phy_addr = ACP7x_I2S_BT_RX_MEM_WINDOW_START;
+ else
+ phy_addr = I2S_BT_RX_MEM_WINDOW_START + stream->reg_offset;
writel(phy_addr, chip->base + ACP_BT_RX_RINGBUFADDR(chip));
}
break;
@@ -257,7 +269,10 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
HS_PB_FIFO_ADDR_OFFSET;
reg_fifo_addr = ACP_HS_TX_FIFOADDR;
reg_fifo_size = ACP_HS_TX_FIFOSIZE;
- phy_addr = I2S_HS_TX_MEM_WINDOW_START + stream->reg_offset;
+ if (chip->acp_rev >= ACP70_PCI_ID)
+ phy_addr = ACP7x_I2S_HS_TX_MEM_WINDOW_START;
+ else
+ phy_addr = I2S_HS_TX_MEM_WINDOW_START + stream->reg_offset;
writel(phy_addr, chip->base + ACP_HS_TX_RINGBUFADDR);
} else {
reg_dma_size = ACP_HS_RX_DMA_SIZE;
@@ -265,7 +280,10 @@ static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
HS_CAPT_FIFO_ADDR_OFFSET;
reg_fifo_addr = ACP_HS_RX_FIFOADDR;
reg_fifo_size = ACP_HS_RX_FIFOSIZE;
- phy_addr = I2S_HS_RX_MEM_WINDOW_START + stream->reg_offset;
+ if (chip->acp_rev >= ACP70_PCI_ID)
+ phy_addr = ACP7x_I2S_HS_RX_MEM_WINDOW_START;
+ else
+ phy_addr = I2S_HS_RX_MEM_WINDOW_START + stream->reg_offset;
writel(phy_addr, chip->base + ACP_HS_RX_RINGBUFADDR);
}
break;
--
2.17.1