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dmaengine: ls2x-apb: New driver for the Loongson LS2X APB DMA controller

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The Loongson LS2X APB DMA controller is available on Loongson-2K chips.

It is a single-channel, configurable DMA controller IP core based on the
AXI bus, whose main function is to integrate DMA functionality on a chip
dedicated to carrying data between memory and peripherals in APB bus
(e.g. nand).

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Yingkun Meng <mengyingkun@loongson.cn>
Link: https://lore.kernel.org/r/8df2a0199434fba3535831082966c2442ecf1cae.1702365725.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Binbin Zhou
2023-12-21 21:35:13 +05:30
committed by Vinod Koul
parent 3b3b5339cd
commit 71e7d3cb6e
4 changed files with 721 additions and 0 deletions
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MAINTAINERS
+1
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@@ -12512,6 +12512,7 @@ M: Binbin Zhou <zhoubinbin@loongson.cn>
L: dmaengine@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/dma/loongson,ls2x-apbdma.yaml
F: drivers/dma/ls2x-apb-dma.c
LOONGSON LS2X I2C DRIVER
M: Binbin Zhou <zhoubinbin@loongson.cn>
drivers/dma/Kconfig
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@@ -378,6 +378,20 @@ config LPC18XX_DMAMUX
Enable support for DMA on NXP LPC18xx/43xx platforms
with PL080 and multiplexed DMA request lines.
config LS2X_APB_DMA
tristate "Loongson LS2X APB DMA support"
depends on LOONGARCH || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the Loongson LS2X APB DMA controller driver. The
DMA controller is having single DMA channel which can be
configured for different peripherals like audio, nand, sdio
etc which is in APB bus.
This DMA controller transfers data from memory to peripheral fifo.
It does not support memory to memory data transfer.
config MCF_EDMA
tristate "Freescale eDMA engine support, ColdFire mcf5441x SoCs"
depends on M5441x || COMPILE_TEST
drivers/dma/Makefile
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@@ -48,6 +48,7 @@ obj-$(CONFIG_INTEL_IOATDMA) += ioat/
obj-y += idxd/
obj-$(CONFIG_K3_DMA) += k3dma.o
obj-$(CONFIG_LPC18XX_DMAMUX) += lpc18xx-dmamux.o
obj-$(CONFIG_LS2X_APB_DMA) += ls2x-apb-dma.o
obj-$(CONFIG_MILBEAUT_HDMAC) += milbeaut-hdmac.o
obj-$(CONFIG_MILBEAUT_XDMAC) += milbeaut-xdmac.o
obj-$(CONFIG_MMP_PDMA) += mmp_pdma.o
drivers/dma/ls2x-apb-dma.c
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