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Subject[PATCH 06/21] ASoC: SOF: amd: Add PCM stream callback for Renoir dai's
Date
From: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>

Add module to support ALSA pcm stream configurations for ACP I2S
and DMIC endpoints

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
sound/soc/sof/amd/Makefile | 2 +-
sound/soc/sof/amd/acp-pcm.c | 82 +++++++++++++++
sound/soc/sof/amd/acp-stream.c | 181 +++++++++++++++++++++++++++++++++
sound/soc/sof/amd/acp.c | 2 +
sound/soc/sof/amd/acp.h | 28 +++++
sound/soc/sof/amd/renoir.c | 11 ++
6 files changed, 305 insertions(+), 1 deletion(-)
create mode 100644 sound/soc/sof/amd/acp-pcm.c
create mode 100644 sound/soc/sof/amd/acp-stream.c

diff --git a/sound/soc/sof/amd/Makefile b/sound/soc/sof/amd/Makefile
index 29928b16002f..7b88db9c5fb7 100644
--- a/sound/soc/sof/amd/Makefile
+++ b/sound/soc/sof/amd/Makefile
@@ -4,7 +4,7 @@
#
# Copyright(c) 2021 Advanced Micro Devices, Inc. All rights reserved.

-snd-sof-amd-acp-objs := acp.o acp-loader.o acp-ipc.o
+snd-sof-amd-acp-objs := acp.o acp-loader.o acp-ipc.o acp-pcm.o acp-stream.o
snd-sof-amd-renoir-objs := renoir.o

obj-$(CONFIG_SND_SOC_SOF_AMD_COMMON) += snd-sof-amd-acp.o
diff --git a/sound/soc/sof/amd/acp-pcm.c b/sound/soc/sof/amd/acp-pcm.c
new file mode 100644
index 000000000000..5b23830cb1f3
--- /dev/null
+++ b/sound/soc/sof/amd/acp-pcm.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2021 Advanced Micro Devices, Inc.
+//
+// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
+
+/*
+ * PCM interface for generic AMD audio ACP DSP block
+ */
+#include <sound/pcm_params.h>
+
+#include "../ops.h"
+#include "acp.h"
+#include "acp-dsp-offset.h"
+
+int acp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct sof_ipc_stream_params *ipc_params)
+{
+ struct acp_dsp_stream *stream = substream->runtime->private_data;
+ unsigned int buf_offset, index;
+ u32 size;
+ int ret;
+
+ size = ipc_params->buffer.size;
+ stream->num_pages = ipc_params->buffer.pages;
+ stream->dmab = substream->runtime->dma_buffer_p;
+
+ ret = acp_dsp_stream_config(sdev, stream);
+ if (ret < 0) {
+ dev_err(sdev->dev, "stream configuration failed\n");
+ return ret;
+ }
+
+ ipc_params->buffer.phy_addr = stream->reg_offset;
+ ipc_params->stream_tag = stream->stream_tag;
+
+ /* write buffer size of stream in scratch memory */
+
+ buf_offset = offsetof(struct scratch_reg_conf, buf_size);
+ index = stream->stream_tag - 1;
+ buf_offset = buf_offset + index * 4;
+
+ snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + buf_offset, size);
+
+ return 0;
+}
+EXPORT_SYMBOL_NS(acp_pcm_hw_params, SND_SOC_SOF_AMD_COMMON);
+
+int acp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
+{
+ struct acp_dsp_stream *stream;
+
+ stream = acp_dsp_stream_get(sdev, 0);
+ if (!stream)
+ return -ENODEV;
+
+ substream->runtime->private_data = stream;
+ stream->substream = substream;
+
+ return 0;
+}
+EXPORT_SYMBOL_NS(acp_pcm_open, SND_SOC_SOF_AMD_COMMON);
+
+int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
+{
+ struct acp_dsp_stream *stream;
+
+ stream = substream->runtime->private_data;
+ if (!stream) {
+ dev_err(sdev->dev, "No open stream\n");
+ return -EINVAL;
+ }
+
+ stream->substream = NULL;
+ substream->runtime->private_data = NULL;
+
+ return acp_dsp_stream_put(sdev, stream);
+}
+EXPORT_SYMBOL_NS(acp_pcm_close, SND_SOC_SOF_AMD_COMMON);
diff --git a/sound/soc/sof/amd/acp-stream.c b/sound/soc/sof/amd/acp-stream.c
new file mode 100644
index 000000000000..f2837bfbdb20
--- /dev/null
+++ b/sound/soc/sof/amd/acp-stream.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2021 Advanced Micro Devices, Inc.
+//
+// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
+
+/*
+ * Hardware interface for generic AMD audio DSP ACP IP
+ */
+
+#include "../ops.h"
+#include "acp-dsp-offset.h"
+#include "acp.h"
+
+#define PTE_GRP1_OFFSET 0x00000000
+#define PTE_GRP2_OFFSET 0x00800000
+#define PTE_GRP3_OFFSET 0x01000000
+#define PTE_GRP4_OFFSET 0x01800000
+#define PTE_GRP5_OFFSET 0x02000000
+#define PTE_GRP6_OFFSET 0x02800000
+#define PTE_GRP7_OFFSET 0x03000000
+#define PTE_GRP8_OFFSET 0x03800000
+
+int acp_dsp_stream_config(struct snd_sof_dev *sdev, struct acp_dsp_stream *stream)
+{
+ unsigned int pte_reg, pte_size, phy_addr_offset, index;
+ int stream_tag = stream->stream_tag;
+ u32 low, high, offset, reg_val;
+ dma_addr_t addr;
+ int page_idx;
+
+ switch (stream_tag) {
+ case 1:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_1;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_1;
+ offset = offsetof(struct scratch_reg_conf, grp1_pte);
+ stream->reg_offset = PTE_GRP1_OFFSET;
+ break;
+ case 2:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_2;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_2;
+ offset = offsetof(struct scratch_reg_conf, grp2_pte);
+ stream->reg_offset = PTE_GRP2_OFFSET;
+ break;
+ case 3:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_3;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_3;
+ offset = offsetof(struct scratch_reg_conf, grp3_pte);
+ stream->reg_offset = PTE_GRP3_OFFSET;
+ break;
+ case 4:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_4;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_4;
+ offset = offsetof(struct scratch_reg_conf, grp4_pte);
+ stream->reg_offset = PTE_GRP4_OFFSET;
+ break;
+ case 5:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_5;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_5;
+ offset = offsetof(struct scratch_reg_conf, grp5_pte);
+ stream->reg_offset = PTE_GRP5_OFFSET;
+ break;
+ case 6:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_6;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_6;
+ offset = offsetof(struct scratch_reg_conf, grp6_pte);
+ stream->reg_offset = PTE_GRP6_OFFSET;
+ break;
+ case 7:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_7;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_7;
+ offset = offsetof(struct scratch_reg_conf, grp7_pte);
+ stream->reg_offset = PTE_GRP7_OFFSET;
+ break;
+ case 8:
+ pte_reg = ACPAXI2AXI_ATU_BASE_ADDR_GRP_8;
+ pte_size = ACPAXI2AXI_ATU_PAGE_SIZE_GRP_8;
+ offset = offsetof(struct scratch_reg_conf, grp8_pte);
+ stream->reg_offset = PTE_GRP8_OFFSET;
+ break;
+ default:
+ dev_err(sdev->dev, "Invalid stream tag %d\n", stream_tag);
+ return -EINVAL;
+ }
+
+ /* write phy_addr in scratch memory */
+
+ phy_addr_offset = offsetof(struct scratch_reg_conf, reg_offset);
+ index = stream_tag - 1;
+ phy_addr_offset = phy_addr_offset + index * 4;
+
+ snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 +
+ phy_addr_offset, stream->reg_offset);
+
+ /* Group Enable */
+ reg_val = ACP_SRAM_PTE_OFFSET + offset;
+ snd_sof_dsp_write(sdev, ACP_DSP_BAR, pte_reg, reg_val | BIT(31));
+ snd_sof_dsp_write(sdev, ACP_DSP_BAR, pte_size, PAGE_SIZE_4K_ENABLE);
+
+ for (page_idx = 0; page_idx < stream->num_pages; page_idx++) {
+ addr = snd_sgbuf_get_addr(stream->dmab, page_idx * PAGE_SIZE);
+
+ /* Load the low address of page int ACP SRAM through SRBM */
+ low = lower_32_bits(addr);
+ high = upper_32_bits(addr);
+
+ snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + offset, low);
+
+ high |= BIT(31);
+ snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + offset + 4, high);
+ /* Move to next physically contiguous page */
+ offset += 8;
+ }
+
+ return 0;
+}
+
+struct acp_dsp_stream *acp_dsp_stream_get(struct snd_sof_dev *sdev, int tag)
+{
+ struct acp_dev_data *adata = sdev->pdata->hw_pdata;
+ struct acp_dsp_stream *stream = adata->stream_buf;
+ int i;
+
+ for (i = 0; i < ACP_MAX_STREAM; i++, stream++) {
+ if (stream->active)
+ continue;
+
+ /* return stream if tag not specified*/
+ if (!tag) {
+ stream->active = 1;
+ return stream;
+ }
+
+ /* check if this is the requested stream tag */
+ if (stream->stream_tag == tag) {
+ stream->active = 1;
+ return stream;
+ }
+ }
+
+ dev_err(sdev->dev, "stream %d active or no inactive stream\n", tag);
+ return NULL;
+}
+EXPORT_SYMBOL_NS(acp_dsp_stream_get, SND_SOC_SOF_AMD_COMMON);
+
+int acp_dsp_stream_put(struct snd_sof_dev *sdev,
+ struct acp_dsp_stream *acp_stream)
+{
+ struct acp_dev_data *adata = sdev->pdata->hw_pdata;
+ struct acp_dsp_stream *stream = adata->stream_buf;
+ int i;
+
+ /* Free an active stream */
+ for (i = 0; i < ACP_MAX_STREAM; i++, stream++) {
+ if (stream == acp_stream) {
+ stream->active = 0;
+ return 0;
+ }
+ }
+
+ dev_err(sdev->dev, "Cannot find active stream tag %d\n", acp_stream->stream_tag);
+ return -EINVAL;
+}
+EXPORT_SYMBOL_NS(acp_dsp_stream_put, SND_SOC_SOF_AMD_COMMON);
+
+int acp_dsp_stream_init(struct snd_sof_dev *sdev)
+{
+ struct acp_dev_data *adata = sdev->pdata->hw_pdata;
+ int i;
+
+ for (i = 0; i < ACP_MAX_STREAM; i++) {
+ adata->stream_buf[i].sdev = sdev;
+ adata->stream_buf[i].active = 0;
+ adata->stream_buf[i].stream_tag = i + 1;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_NS(acp_dsp_stream_init, SND_SOC_SOF_AMD_COMMON);
diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c
index 43a57d15e3ca..74ede28aa8d8 100644
--- a/sound/soc/sof/amd/acp.c
+++ b/sound/soc/sof/amd/acp.c
@@ -363,6 +363,8 @@ int amd_sof_acp_probe(struct snd_sof_dev *sdev)

acp_memory_init(sdev);

+ acp_dsp_stream_init(sdev);
+
return 0;
}
EXPORT_SYMBOL_NS(amd_sof_acp_probe, SND_SOC_SOF_AMD_COMMON);
diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h
index ac8340119125..36d000c3f792 100644
--- a/sound/soc/sof/amd/acp.h
+++ b/sound/soc/sof/amd/acp.h
@@ -13,6 +13,8 @@

#include "../sof-priv.h"

+#define ACP_MAX_STREAM 8
+
#define ACP_DSP_BAR 0

#define ACP_REG_POLL_INTERVAL 500
@@ -114,6 +116,17 @@ struct scratch_reg_conf {
unsigned int reserve[];
};

+struct acp_dsp_stream {
+ struct list_head list;
+ struct snd_sof_dev *sdev;
+ struct snd_pcm_substream *substream;
+ struct snd_dma_buffer *dmab;
+ int num_pages;
+ int stream_tag;
+ int active;
+ unsigned int reg_offset;
+};
+
/* Common device data struct for ACP devices */
struct acp_dev_data {
struct snd_sof_dev *dev;
@@ -125,6 +138,7 @@ struct acp_dev_data {
dma_addr_t dma_addr;
u8 *data_buf;
struct dma_descriptor dscr_info[ACP_MAX_DESC];
+ struct acp_dsp_stream stream_buf[ACP_MAX_STREAM];
};

void memcpy_to_scratch(struct snd_sof_dev *sdev, u32 offset, unsigned int *src, size_t bytes);
@@ -165,5 +179,19 @@ int acp_sof_ipc_pcm_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *s
void acp_mailbox_write(struct snd_sof_dev *sdev, u32 offset, void *message, size_t bytes);
void acp_mailbox_read(struct snd_sof_dev *sdev, u32 offset, void *message, size_t bytes);

+/* ACP - DSP stream callbacks */
+int acp_dsp_stream_config(struct snd_sof_dev *sdev, struct acp_dsp_stream *stream);
+int acp_dsp_stream_init(struct snd_sof_dev *sdev);
+struct acp_dsp_stream *acp_dsp_stream_get(struct snd_sof_dev *sdev, int tag);
+int acp_dsp_stream_put(struct snd_sof_dev *sdev, struct acp_dsp_stream *acp_stream);
+
+/*
+ * DSP PCM Operations.
+ */
+int acp_pcm_open(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream);
+int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream);
+int acp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct sof_ipc_stream_params *ipc_params);
+
extern const struct snd_sof_dsp_ops sof_renoir_ops;
#endif
diff --git a/sound/soc/sof/amd/renoir.c b/sound/soc/sof/amd/renoir.c
index ca5582b3f82d..0241c5dce156 100644
--- a/sound/soc/sof/amd/renoir.c
+++ b/sound/soc/sof/amd/renoir.c
@@ -140,6 +140,17 @@ const struct snd_sof_dsp_ops sof_renoir_ops = {
/* DAI drivers */
.drv = renoir_sof_dai,
.num_drv = ARRAY_SIZE(renoir_sof_dai),
+
+ /* stream callbacks */
+ .pcm_open = acp_pcm_open,
+ .pcm_close = acp_pcm_close,
+ .pcm_hw_params = acp_pcm_hw_params,
+
+ .hw_info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
};
EXPORT_SYMBOL(sof_renoir_ops);

--
2.27.0
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