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ASoC: amd: ps: add comments for DMA register mapping

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Add comments for DMA register mapping for both the SoundWire manager
instances.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230626105356.2580125-4-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda
2023-06-26 16:23:52 +05:30
committed by Mark Brown
parent f15f6b294d
commit 46b50e514b
1 changed files with 11 additions and 0 deletions
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11
sound/soc/amd/ps/ps-sdw-dma.c
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@@ -39,6 +39,11 @@ static struct sdw_dma_ring_buf_reg sdw0_dma_ring_buf_reg[ACP63_SDW0_DMA_MAX_STRE
ACP_AUDIO2_RX_LINEARPOSITIONCNTR_LOW, ACP_AUDIO2_RX_LINEARPOSITIONCNTR_HIGH}
};
/*
* SDW1 instance supports one TX stream and one RX stream.
* For TX/RX streams DMA registers programming for SDW1 instance, it uses ACP_P1_AUDIO1 register
* set as per hardware register documentation
*/
static struct sdw_dma_ring_buf_reg sdw1_dma_ring_buf_reg[ACP63_SDW1_DMA_MAX_STREAMS] = {
{ACP_P1_AUDIO1_TX_DMA_SIZE, ACP_P1_AUDIO1_TX_FIFOADDR, ACP_P1_AUDIO1_TX_FIFOSIZE,
ACP_P1_AUDIO1_TX_RINGBUFSIZE, ACP_P1_AUDIO1_TX_RINGBUFADDR,
@@ -59,6 +64,12 @@ static u32 sdw0_dma_enable_reg[ACP63_SDW0_DMA_MAX_STREAMS] = {
ACP_SW0_AUDIO2_RX_EN,
};
/*
* SDW1 instance supports one TX stream and one RX stream.
* For TX/RX streams DMA enable register programming for SDW1 instance,
* it uses ACP_SW1_AUDIO1_TX_EN and ACP_SW1_AUDIO1_RX_EN registers
* as per hardware register documentation.
*/
static u32 sdw1_dma_enable_reg[ACP63_SDW1_DMA_MAX_STREAMS] = {
ACP_SW1_AUDIO1_TX_EN,
ACP_SW1_AUDIO1_RX_EN,