Unverified Commit 46b50e51 authored by Vijendar Mukunda's avatar Vijendar Mukunda Committed by Mark Brown
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ASoC: amd: ps: add comments for DMA register mapping 



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

Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230626105356.2580125-4-Vijendar.Mukunda@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f15f6b29

sound/soc/amd/ps/ps-sdw-dma.c

+11 −0
Original line number Diff line number Diff line
@@ -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,