Commit 3d70fccf authored by Paul Cercueil's avatar Paul Cercueil Committed by Vinod Koul
Browse files

dmaengine: jz4780: Add support for the MDMA and BDMA in the JZ4760(B) 



The JZ4760 and JZ4760B SoCs have two regular DMA controllers with 6
channels each. They also have an extra DMA controller named MDMA
with only 2 channels, that only supports memcpy operations, and one
named BDMA with only 3 channels, that is mostly used for transfers
between memories and the BCH controller.

Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20211206174259.68133-5-paul@crapouillou.net


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent b72cbb1a

drivers/dma/dma-jz4780.c

+28 −0
Original line number Diff line number Diff line
@@ -1019,12 +1019,36 @@ static const struct jz4780_dma_soc_data jz4760_dma_soc_data = { 
	.flags = JZ_SOC_DATA_PER_CHAN_PM | JZ_SOC_DATA_NO_DCKES_DCKEC,

};



static const struct jz4780_dma_soc_data jz4760_mdma_soc_data = {

	.nb_channels = 2,

	.transfer_ord_max = 6,

	.flags = JZ_SOC_DATA_PER_CHAN_PM | JZ_SOC_DATA_NO_DCKES_DCKEC,

};



static const struct jz4780_dma_soc_data jz4760_bdma_soc_data = {

	.nb_channels = 3,

	.transfer_ord_max = 6,

	.flags = JZ_SOC_DATA_PER_CHAN_PM | JZ_SOC_DATA_NO_DCKES_DCKEC,

};



static const struct jz4780_dma_soc_data jz4760b_dma_soc_data = {

	.nb_channels = 5,

	.transfer_ord_max = 6,

	.flags = JZ_SOC_DATA_PER_CHAN_PM,

};



static const struct jz4780_dma_soc_data jz4760b_mdma_soc_data = {

	.nb_channels = 2,

	.transfer_ord_max = 6,

	.flags = JZ_SOC_DATA_PER_CHAN_PM,

};



static const struct jz4780_dma_soc_data jz4760b_bdma_soc_data = {

	.nb_channels = 3,

	.transfer_ord_max = 6,

	.flags = JZ_SOC_DATA_PER_CHAN_PM,

};



static const struct jz4780_dma_soc_data jz4770_dma_soc_data = {

	.nb_channels = 6,

	.transfer_ord_max = 6,
@@ -1053,7 +1077,11 @@ static const struct of_device_id jz4780_dma_dt_match[] = { 
	{ .compatible = "ingenic,jz4740-dma", .data = &jz4740_dma_soc_data },

	{ .compatible = "ingenic,jz4725b-dma", .data = &jz4725b_dma_soc_data },

	{ .compatible = "ingenic,jz4760-dma", .data = &jz4760_dma_soc_data },

	{ .compatible = "ingenic,jz4760-mdma", .data = &jz4760_mdma_soc_data },

	{ .compatible = "ingenic,jz4760-bdma", .data = &jz4760_bdma_soc_data },

	{ .compatible = "ingenic,jz4760b-dma", .data = &jz4760b_dma_soc_data },

	{ .compatible = "ingenic,jz4760b-mdma", .data = &jz4760b_mdma_soc_data },

	{ .compatible = "ingenic,jz4760b-bdma", .data = &jz4760b_bdma_soc_data },

	{ .compatible = "ingenic,jz4770-dma", .data = &jz4770_dma_soc_data },

	{ .compatible = "ingenic,jz4780-dma", .data = &jz4780_dma_soc_data },

	{ .compatible = "ingenic,x1000-dma", .data = &x1000_dma_soc_data },