[PATCH 5/8] ASoC: AMD: DMA driver changes for Stoney Platform
Alex Deucher
alexdeucher at gmail.com
Fri Jun 23 16:35:03 UTC 2017
From: Vijendar Mukunda <Vijendar.Mukunda at amd.com>
Added DMA driver changes for Stoney platform.
Below are the key differences between Stoney and CZ:
- Memory Gating is disabled
- SRAM Banks won't be turned off
- No Of SRAM Banks reduced to 6
- DAGB Garlic Interface used
- 16 bit resolution is supported.
- SRAM bank 1 & SRAM bank 2 will be used for playback scenario.
- SRAM Bank 3 & SRAM Bank 4 will be used for Capture scenario.
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
sound/soc/amd/acp-pcm-dma.c | 81 +++++++++++++++++++++++++++++++++------------
sound/soc/amd/acp.h | 2 ++
2 files changed, 61 insertions(+), 22 deletions(-)
diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index e48ae5d..5b5e95d 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -139,8 +139,8 @@ static void config_dma_descriptor_in_sram(void __iomem *acp_mmio,
* system memory <-> ACP SRAM
*/
static void set_acp_sysmem_dma_descriptors(void __iomem *acp_mmio,
- u32 size, int direction,
- u32 pte_offset)
+ u32 size, int direction,
+ u32 pte_offset, u32 asic_type)
{
u16 i;
u16 dma_dscr_idx = PLAYBACK_START_DMA_DESCR_CH12;
@@ -154,20 +154,38 @@ static void set_acp_sysmem_dma_descriptors(void __iomem *acp_mmio,
(size / 2) - (i * (size/2));
dmadscr[i].src = ACP_INTERNAL_APERTURE_WINDOW_0_ADDRESS
+ (pte_offset * SZ_4K) + (i * (size/2));
- dmadscr[i].xfer_val |=
- (ACP_DMA_ATTRIBUTES_DAGB_ONION_TO_SHAREDMEM << 16) |
- (size / 2);
+ if (asic_type == CHIP_STONEY) {
+ dmadscr[i].xfer_val |=
+ (ACP_DMA_ATTRIBUTES_DAGB_GARLIC_TO_SHAREDMEM << 16) |
+ (size / 2);
+ } else {
+ dmadscr[i].xfer_val |=
+ (ACP_DMA_ATTRIBUTES_DAGB_ONION_TO_SHAREDMEM << 16) |
+ (size / 2);
+ }
} else {
dma_dscr_idx = CAPTURE_START_DMA_DESCR_CH14 + i;
- dmadscr[i].src = ACP_SHARED_RAM_BANK_5_ADDRESS +
- (i * (size/2));
- dmadscr[i].dest = ACP_INTERNAL_APERTURE_WINDOW_0_ADDRESS
- + (pte_offset * SZ_4K) +
- (i * (size/2));
- dmadscr[i].xfer_val |=
- BIT(22) |
- (ACP_DMA_ATTRIBUTES_SHAREDMEM_TO_DAGB_ONION << 16) |
- (size / 2);
+ if (asic_type == CHIP_STONEY) {
+ dmadscr[i].src = ACP_SHARED_RAM_BANK_3_ADDRESS +
+ (i * (size/2));
+ dmadscr[i].dest =
+ ACP_INTERNAL_APERTURE_WINDOW_0_ADDRESS +
+ (pte_offset * SZ_4K) + (i * (size/2));
+ dmadscr[i].xfer_val |=
+ BIT(22) |
+ (ACP_DMA_ATTRIBUTES_SHARED_MEM_TO_DAGB_GARLIC << 16) |
+ (size / 2);
+ } else {
+ dmadscr[i].src = ACP_SHARED_RAM_BANK_5_ADDRESS +
+ (i * (size/2));
+ dmadscr[i].dest =
+ ACP_INTERNAL_APERTURE_WINDOW_0_ADDRESS +
+ (pte_offset * SZ_4K) + (i * (size/2));
+ dmadscr[i].xfer_val |=
+ BIT(22) |
+ (ACP_DMA_ATTRIBUTES_SHAREDMEM_TO_DAGB_ONION << 16) |
+ (size / 2);
+ }
}
config_dma_descriptor_in_sram(acp_mmio, dma_dscr_idx,
&dmadscr[i]);
@@ -188,7 +206,8 @@ static void set_acp_sysmem_dma_descriptors(void __iomem *acp_mmio,
* ACP SRAM <-> I2S
*/
static void set_acp_to_i2s_dma_descriptors(void __iomem *acp_mmio,
- u32 size, int direction)
+ u32 size, int direction,
+ u32 asic_type)
{
u16 i;
@@ -209,8 +228,15 @@ static void set_acp_to_i2s_dma_descriptors(void __iomem *acp_mmio,
dma_dscr_idx = CAPTURE_START_DMA_DESCR_CH15 + i;
/* dmadscr[i].src is unused by hardware. */
dmadscr[i].src = 0;
- dmadscr[i].dest = ACP_SHARED_RAM_BANK_5_ADDRESS +
+ if (asic_type == CHIP_STONEY) {
+ dmadscr[i].dest =
+ ACP_SHARED_RAM_BANK_3_ADDRESS +
(i * (size / 2));
+ } else {
+ dmadscr[i].dest =
+ ACP_SHARED_RAM_BANK_5_ADDRESS +
+ (i * (size / 2));
+ }
dmadscr[i].xfer_val |= BIT(22) |
(FROM_ACP_I2S_1 << 16) | (size / 2);
}
@@ -266,7 +292,8 @@ static void acp_pte_config(void __iomem *acp_mmio, struct page *pg,
}
static void config_acp_dma(void __iomem *acp_mmio,
- struct audio_substream_data *audio_config)
+ struct audio_substream_data *audio_config,
+ u32 asic_type)
{
u32 pte_offset;
@@ -280,11 +307,12 @@ static void config_acp_dma(void __iomem *acp_mmio,
/* Configure System memory <-> ACP SRAM DMA descriptors */
set_acp_sysmem_dma_descriptors(acp_mmio, audio_config->size,
- audio_config->direction, pte_offset);
+ audio_config->direction, pte_offset,
+ asic_type);
/* Configure ACP SRAM <-> I2S DMA descriptors */
set_acp_to_i2s_dma_descriptors(acp_mmio, audio_config->size,
- audio_config->direction);
+ audio_config->direction, asic_type);
}
/* Start a given DMA channel transfer */
@@ -500,6 +528,11 @@ static int acp_init(void __iomem *acp_mmio, u32 asic_type)
for (bank = 1; bank < 48; bank++)
acp_set_sram_bank_state(acp_mmio, bank, false);
}
+ if (asic_type == CHIP_STONEY) {
+ val = acp_reg_read(acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
+ val |= 0x03;
+ acp_reg_write(val, acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
+ }
return 0;
}
@@ -675,6 +708,8 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
struct page *pg;
struct snd_pcm_runtime *runtime;
struct audio_substream_data *rtd;
+ struct snd_soc_pcm_runtime *prtd = substream->private_data;
+ struct audio_drv_data *adata = dev_get_drvdata(prtd->platform->dev);
runtime = substream->runtime;
rtd = runtime->private_data;
@@ -702,7 +737,7 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
rtd->num_of_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
rtd->direction = substream->stream;
- config_acp_dma(rtd->acp_mmio, rtd);
+ config_acp_dma(rtd->acp_mmio, rtd, adata->asic_type);
status = 0;
} else {
status = -ENOMEM;
@@ -997,7 +1032,8 @@ static int acp_pcm_resume(struct device *dev)
true);
}
config_acp_dma(adata->acp_mmio,
- adata->play_stream->runtime->private_data);
+ adata->play_stream->runtime->private_data,
+ adata->asic_type);
}
if (adata->capture_stream && adata->capture_stream->runtime) {
if (adata->asic_type == CHIP_CARRIZO) {
@@ -1006,7 +1042,8 @@ static int acp_pcm_resume(struct device *dev)
true);
}
config_acp_dma(adata->acp_mmio,
- adata->capture_stream->runtime->private_data);
+ adata->capture_stream->runtime->private_data,
+ adata->asic_type);
}
acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB);
return 0;
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
index 28cf914..a330a99 100644
--- a/sound/soc/amd/acp.h
+++ b/sound/soc/amd/acp.h
@@ -19,6 +19,7 @@
/* Capture SRAM address (as a source in dma descriptor) */
#define ACP_SHARED_RAM_BANK_5_ADDRESS 0x400A000
+#define ACP_SHARED_RAM_BANK_3_ADDRESS 0x4006000
#define ACP_DMA_RESET_TIME 10000
#define ACP_CLOCK_EN_TIME_OUT_VALUE 0x000000FF
@@ -67,6 +68,7 @@
#define CAPTURE_START_DMA_DESCR_CH15 6
#define CAPTURE_END_DMA_DESCR_CH15 7
+#define mmACP_I2S_16BIT_RESOLUTION_EN 0x5209
enum acp_dma_priority_level {
/* 0x0 Specifies the DMA channel is given normal priority */
ACP_DMA_PRIORITY_LEVEL_NORMAL = 0x0,
--
2.5.5
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