[PATCH 11/11] ASoC: amd: acp: add pm ops support for rembrandt platform

From: Syed Saba Kareem
Date: Thu Jun 22 2023 - 11:29:21 EST

Next message: Syed Saba Kareem: "[PATCH 11/12] ASoC: amd: acp: move pdm macros to common header file"
Previous message: Benjamin Gaignard: "Re: [PATCH v3 08/11] media: verisilicon: postproc: Fix down scale test"
In reply to: Syed Saba Kareem: "[PATCH 10/12] ASoC: amd: acp: store the pdm stream channel mask"
Next in thread: Syed Saba Kareem: "[PATCH 11/12] ASoC: amd: acp: move pdm macros to common header file"
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Add pm ops for rembrandt platform.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@xxxxxxx>
---
sound/soc/amd/acp/acp-legacy-common.c | 208 ++++++++++++++++++++++++++
sound/soc/amd/acp/acp-rembrandt.c | 42 +++++-
sound/soc/amd/acp/amd.h | 9 ++
3 files changed, 258 insertions(+), 1 deletion(-)

diff --git a/sound/soc/amd/acp/acp-legacy-common.c b/sound/soc/amd/acp/acp-legacy-common.c
index 45a45d002915..ba58165cc6e6 100644
--- a/sound/soc/amd/acp/acp-legacy-common.c
+++ b/sound/soc/amd/acp/acp-legacy-common.c
@@ -37,6 +37,214 @@ void acp_disable_interrupts(struct acp_dev_data *adata)
}
EXPORT_SYMBOL_NS_GPL(acp_disable_interrupts, SND_SOC_ACP_COMMON);

+static void set_acp_pdm_ring_buffer(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct acp_stream *stream = runtime->private_data;
+ struct device *dev = dai->component->dev;
+ struct acp_dev_data *adata = dev_get_drvdata(dev);
+
+ u32 physical_addr, pdm_size, period_bytes;
+
+ period_bytes = frames_to_bytes(runtime, runtime->period_size);
+ pdm_size = frames_to_bytes(runtime, runtime->buffer_size);
+ physical_addr = stream->reg_offset + MEM_WINDOW_START;
+
+ /* Init ACP PDM Ring buffer */
+ writel(physical_addr, adata->acp_base + ACP_WOV_RX_RINGBUFADDR);
+ writel(pdm_size, adata->acp_base + ACP_WOV_RX_RINGBUFSIZE);
+ writel(period_bytes, adata->acp_base + ACP_WOV_RX_INTR_WATERMARK_SIZE);
+ writel(0x01, adata->acp_base + ACPAXI2AXI_ATU_CTRL);
+}
+
+static void set_acp_pdm_clk(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct device *dev = dai->component->dev;
+ struct acp_dev_data *adata = dev_get_drvdata(dev);
+ unsigned int pdm_ctrl;
+
+ /* Enable default ACP PDM clk */
+ writel(PDM_CLK_FREQ_MASK, adata->acp_base + ACP_WOV_CLK_CTRL);
+ pdm_ctrl = readl(adata->acp_base + ACP_WOV_MISC_CTRL);
+ pdm_ctrl |= PDM_MISC_CTRL_MASK;
+ writel(pdm_ctrl, adata->acp_base + ACP_WOV_MISC_CTRL);
+ set_acp_pdm_ring_buffer(substream, dai);
+}
+
+void restore_acp_pdm_params(struct snd_pcm_substream *substream,
+ struct acp_dev_data *adata)
+{
+ struct snd_soc_dai *dai;
+ struct snd_soc_pcm_runtime *soc_runtime;
+ u32 ext_int_ctrl;
+
+ soc_runtime = asoc_substream_to_rtd(substream);
+ dai = asoc_rtd_to_cpu(soc_runtime, 0);
+ /* Programming channel mask and sampling rate */
+ writel(adata->ch_mask, adata->acp_base + ACP_WOV_PDM_NO_OF_CHANNELS);
+ writel(PDM_DEC_64, adata->acp_base + ACP_WOV_PDM_DECIMATION_FACTOR);
+
+ /* Enabling ACP Pdm interuppts */
+ ext_int_ctrl = readl(ACP_EXTERNAL_INTR_CNTL(adata, 0));
+ ext_int_ctrl |= PDM_DMA_INTR_MASK;
+ writel(ext_int_ctrl, ACP_EXTERNAL_INTR_CNTL(adata, 0));
+ set_acp_pdm_clk(substream, dai);
+}
+EXPORT_SYMBOL_NS_GPL(restore_acp_pdm_params, SND_SOC_ACP_COMMON);
+
+static int set_acp_i2s_dma_fifo(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct device *dev = dai->component->dev;
+ struct acp_dev_data *adata = dev_get_drvdata(dev);
+ struct acp_resource *rsrc = adata->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;
+ unsigned int dir = substream->stream;
+
+ switch (dai->driver->id) {
+ case I2S_SP_INSTANCE:
+ if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+ reg_dma_size = ACP_I2S_TX_DMA_SIZE;
+ acp_fifo_addr = rsrc->sram_pte_offset +
+ SP_PB_FIFO_ADDR_OFFSET;
+ reg_fifo_addr = ACP_I2S_TX_FIFOADDR;
+ reg_fifo_size = ACP_I2S_TX_FIFOSIZE;
+ phy_addr = I2S_SP_TX_MEM_WINDOW_START + stream->reg_offset;
+ writel(phy_addr, adata->acp_base + ACP_I2S_TX_RINGBUFADDR);
+ } else {
+ reg_dma_size = ACP_I2S_RX_DMA_SIZE;
+ acp_fifo_addr = rsrc->sram_pte_offset +
+ SP_CAPT_FIFO_ADDR_OFFSET;
+ reg_fifo_addr = ACP_I2S_RX_FIFOADDR;
+ reg_fifo_size = ACP_I2S_RX_FIFOSIZE;
+ phy_addr = I2S_SP_RX_MEM_WINDOW_START + stream->reg_offset;
+ writel(phy_addr, adata->acp_base + ACP_I2S_RX_RINGBUFADDR);
+ }
+ break;
+ case I2S_BT_INSTANCE:
+ if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+ reg_dma_size = ACP_BT_TX_DMA_SIZE;
+ acp_fifo_addr = rsrc->sram_pte_offset +
+ BT_PB_FIFO_ADDR_OFFSET;
+ reg_fifo_addr = ACP_BT_TX_FIFOADDR;
+ reg_fifo_size = ACP_BT_TX_FIFOSIZE;
+ phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
+ writel(phy_addr, adata->acp_base + ACP_BT_TX_RINGBUFADDR);
+ } else {
+ reg_dma_size = ACP_BT_RX_DMA_SIZE;
+ acp_fifo_addr = rsrc->sram_pte_offset +
+ BT_CAPT_FIFO_ADDR_OFFSET;
+ reg_fifo_addr = ACP_BT_RX_FIFOADDR;
+ reg_fifo_size = ACP_BT_RX_FIFOSIZE;
+ phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
+ writel(phy_addr, adata->acp_base + ACP_BT_RX_RINGBUFADDR);
+ }
+ break;
+ case I2S_HS_INSTANCE:
+ if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+ reg_dma_size = ACP_HS_TX_DMA_SIZE;
+ acp_fifo_addr = rsrc->sram_pte_offset +
+ 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;
+ writel(phy_addr, adata->acp_base + ACP_HS_TX_RINGBUFADDR);
+ } else {
+ reg_dma_size = ACP_HS_RX_DMA_SIZE;
+ acp_fifo_addr = rsrc->sram_pte_offset +
+ 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;
+ writel(phy_addr, adata->acp_base + ACP_HS_RX_RINGBUFADDR);
+ }
+ break;
+ default:
+ dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+ return -EINVAL;
+ }
+
+ writel(DMA_SIZE, adata->acp_base + reg_dma_size);
+ writel(acp_fifo_addr, adata->acp_base + reg_fifo_addr);
+ writel(FIFO_SIZE, adata->acp_base + reg_fifo_size);
+
+ ext_int_ctrl = readl(ACP_EXTERNAL_INTR_CNTL(adata, rsrc->irqp_used));
+ ext_int_ctrl |= BIT(I2S_RX_THRESHOLD(rsrc->offset)) |
+ BIT(BT_RX_THRESHOLD(rsrc->offset)) |
+ BIT(I2S_TX_THRESHOLD(rsrc->offset)) |
+ BIT(BT_TX_THRESHOLD(rsrc->offset)) |
+ BIT(HS_RX_THRESHOLD(rsrc->offset)) |
+ BIT(HS_TX_THRESHOLD(rsrc->offset));
+
+ writel(ext_int_ctrl, ACP_EXTERNAL_INTR_CNTL(adata, rsrc->irqp_used));
+ return 0;
+}
+
+int restore_acp_i2s_params(struct snd_pcm_substream *substream,
+ struct acp_dev_data *adata,
+ struct acp_stream *stream)
+{
+ struct snd_soc_dai *dai;
+ struct snd_soc_pcm_runtime *soc_runtime;
+ u32 tdm_fmt, reg_val, fmt_reg, val;
+
+ soc_runtime = asoc_substream_to_rtd(substream);
+ dai = asoc_rtd_to_cpu(soc_runtime, 0);
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ tdm_fmt = adata->tdm_tx_fmt[stream->dai_id - 1];
+ switch (stream->dai_id) {
+ case I2S_BT_INSTANCE:
+ reg_val = ACP_BTTDM_ITER;
+ fmt_reg = ACP_BTTDM_TXFRMT;
+ break;
+ case I2S_SP_INSTANCE:
+ reg_val = ACP_I2STDM_ITER;
+ fmt_reg = ACP_I2STDM_TXFRMT;
+ break;
+ case I2S_HS_INSTANCE:
+ reg_val = ACP_HSTDM_ITER;
+ fmt_reg = ACP_HSTDM_TXFRMT;
+ break;
+ default:
+ pr_err("Invalid dai id %x\n", stream->dai_id);
+ return -EINVAL;
+ }
+ val = adata->xfer_tx_resolution[stream->dai_id - 1] << 3;
+ } else {
+ tdm_fmt = adata->tdm_rx_fmt[stream->dai_id - 1];
+ switch (stream->dai_id) {
+ case I2S_BT_INSTANCE:
+ reg_val = ACP_BTTDM_IRER;
+ fmt_reg = ACP_BTTDM_RXFRMT;
+ break;
+ case I2S_SP_INSTANCE:
+ reg_val = ACP_I2STDM_IRER;
+ fmt_reg = ACP_I2STDM_RXFRMT;
+ break;
+ case I2S_HS_INSTANCE:
+ reg_val = ACP_HSTDM_IRER;
+ fmt_reg = ACP_HSTDM_RXFRMT;
+ break;
+ default:
+ pr_err("Invalid dai id %x\n", stream->dai_id);
+ return -EINVAL;
+ }
+ val = adata->xfer_rx_resolution[stream->dai_id - 1] << 3;
+ }
+ writel(val, adata->acp_base + reg_val);
+ if (adata->tdm_mode == TDM_ENABLE) {
+ writel(tdm_fmt, adata->acp_base + fmt_reg);
+ val = readl(adata->acp_base + reg_val);
+ writel(val | 0x2, adata->acp_base + reg_val);
+ }
+ return set_acp_i2s_dma_fifo(substream, dai);
+}
+EXPORT_SYMBOL_NS_GPL(restore_acp_i2s_params, SND_SOC_ACP_COMMON);
+
static int acp_power_on(struct acp_chip_info *chip)
{
u32 val, acp_pgfsm_stat_reg, acp_pgfsm_ctrl_reg;
diff --git a/sound/soc/amd/acp/acp-rembrandt.c b/sound/soc/amd/acp/acp-rembrandt.c
index bc8e1de45170..b2b78a69dc24 100644
--- a/sound/soc/amd/acp/acp-rembrandt.c
+++ b/sound/soc/amd/acp/acp-rembrandt.c
@@ -20,6 +20,7 @@
#include <sound/soc-dai.h>
#include <linux/dma-mapping.h>
#include <linux/pci.h>
+#include <linux/pm_runtime.h>

#include "amd.h"

@@ -236,7 +237,11 @@ static int rembrandt_audio_probe(struct platform_device *pdev)
acp6x_master_clock_generate(dev);
acp_enable_interrupts(adata);
acp_platform_register(dev);
-
+ pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
return 0;
}

@@ -247,13 +252,48 @@ static void rembrandt_audio_remove(struct platform_device *pdev)

acp_disable_interrupts(adata);
acp_platform_unregister(dev);
+ pm_runtime_disable(&pdev->dev);
+}
+
+static int __maybe_unused rmb_pcm_resume(struct device *dev)
+{
+ struct acp_dev_data *adata = dev_get_drvdata(dev);
+ struct acp_stream *stream;
+ struct snd_pcm_substream *substream;
+ snd_pcm_uframes_t buf_in_frames;
+ u64 buf_size;
+
+ acp6x_master_clock_generate(dev);
+ spin_lock(&adata->acp_lock);
+ list_for_each_entry(stream, &adata->stream_list, list) {
+ if (stream) {
+ substream = stream->substream;
+ if (substream && substream->runtime) {
+ buf_in_frames = (substream->runtime->buffer_size);
+ buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
+ config_pte_for_stream(adata, stream);
+ config_acp_dma(adata, stream, buf_size);
+ if (stream->dai_id)
+ restore_acp_i2s_params(substream, adata, stream);
+ else
+ restore_acp_pdm_params(substream, adata);
+ }
+ }
+ }
+ spin_unlock(&adata->acp_lock);
+ return 0;
}

+static const struct dev_pm_ops rmb_dma_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(NULL, rmb_pcm_resume)
+};
+
static struct platform_driver rembrandt_driver = {
.probe = rembrandt_audio_probe,
.remove_new = rembrandt_audio_remove,
.driver = {
.name = "acp_asoc_rembrandt",
+ .pm = &rmb_dma_pm_ops,
},
};

diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h
index 8dc663c8d98a..1d8457383e3f 100644
--- a/sound/soc/amd/acp/amd.h
+++ b/sound/soc/amd/acp/amd.h
@@ -110,6 +110,7 @@

#define ACP_TIMEOUT 500
#define DELAY_US 5
+#define ACP_SUSPEND_DELAY_MS 2000

#define PDM_DMA_STAT 0x10
#define PDM_DMA_INTR_MASK 0x10000
@@ -213,6 +214,14 @@ void acp_disable_interrupts(struct acp_dev_data *adata);
/* Machine configuration */
int snd_amd_acp_find_config(struct pci_dev *pci);

+void config_pte_for_stream(struct acp_dev_data *adata, struct acp_stream *stream);
+void config_acp_dma(struct acp_dev_data *adata, struct acp_stream *stream, int size);
+void restore_acp_pdm_params(struct snd_pcm_substream *substream,
+ struct acp_dev_data *adata);
+
+int restore_acp_i2s_params(struct snd_pcm_substream *substream,
+ struct acp_dev_data *adata, struct acp_stream *stream);
+
static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int direction)
{
u64 byte_count, low = 0, high = 0;
--
2.25.1

Next message: Syed Saba Kareem: "[PATCH 11/12] ASoC: amd: acp: move pdm macros to common header file"
Previous message: Benjamin Gaignard: "Re: [PATCH v3 08/11] media: verisilicon: postproc: Fix down scale test"
In reply to: Syed Saba Kareem: "[PATCH 10/12] ASoC: amd: acp: store the pdm stream channel mask"
Next in thread: Syed Saba Kareem: "[PATCH 11/12] ASoC: amd: acp: move pdm macros to common header file"
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