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dmaengine: loongson: New directory for Loongson DMA controllers drivers

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Gather the Loongson DMA controllers under drivers/dma/loongson/

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Keguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/0a0853a85630724741061f6fe08680610e49a06e.1772853681.git.zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Binbin Zhou 2026-03-07 11:25:10 +08:00 committed by Vinod Koul
parent 2d5c2952b9
commit ffee2dc04e
7 changed files with 42 additions and 30 deletions
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3
MAINTAINERS
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@ -14953,7 +14953,7 @@ 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/loongson2-apb-dma.c
F: drivers/dma/loongson/loongson2-apb-dma.c
LOONGSON LS2X I2C DRIVER
M: Binbin Zhou <zhoubinbin@loongson.cn>
@ -17721,6 +17721,7 @@ F: arch/mips/boot/dts/loongson/loongson1*
F: arch/mips/configs/loongson1_defconfig
F: arch/mips/loongson32/
F: drivers/*/*loongson1*
F: drivers/dma/loongson/loongson1-apb-dma.c
F: drivers/mtd/nand/raw/loongson-nand-controller.c
F: drivers/net/ethernet/stmicro/stmmac/dwmac-loongson1.c
F: sound/soc/loongson/loongson1_ac97.c

25
drivers/dma/Kconfig
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@ -376,29 +376,6 @@ config K3_DMA
Support the DMA engine for Hisilicon K3 platform
devices.
config LOONGSON1_APB_DMA
tristate "Loongson1 APB DMA support"
depends on MACH_LOONGSON32 || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
This selects support for the APB DMA controller in Loongson1 SoCs,
which is required by Loongson1 NAND and audio support.
config LOONGSON2_APB_DMA
tristate "Loongson2 APB DMA support"
depends on LOONGARCH || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the Loongson2 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 LPC18XX_DMAMUX
bool "NXP LPC18xx/43xx DMA MUX for PL080"
depends on ARCH_LPC18XX || COMPILE_TEST
@ -783,6 +760,8 @@ source "drivers/dma/fsl-dpaa2-qdma/Kconfig"
source "drivers/dma/lgm/Kconfig"
source "drivers/dma/loongson/Kconfig"
source "drivers/dma/stm32/Kconfig"
# clients

3
drivers/dma/Makefile
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@ -49,8 +49,6 @@ obj-$(CONFIG_INTEL_IDMA64) += idma64.o
obj-$(CONFIG_INTEL_IOATDMA) += ioat/
obj-y += idxd/
obj-$(CONFIG_K3_DMA) += k3dma.o
obj-$(CONFIG_LOONGSON1_APB_DMA) += loongson1-apb-dma.o
obj-$(CONFIG_LOONGSON2_APB_DMA) += loongson2-apb-dma.o
obj-$(CONFIG_LPC18XX_DMAMUX) += lpc18xx-dmamux.o
obj-$(CONFIG_LPC32XX_DMAMUX) += lpc32xx-dmamux.o
obj-$(CONFIG_MILBEAUT_HDMAC) += milbeaut-hdmac.o
@ -88,6 +86,7 @@ obj-$(CONFIG_FSL_DPAA2_QDMA) += fsl-dpaa2-qdma/
obj-$(CONFIG_INTEL_LDMA) += lgm/
obj-y += amd/
obj-y += loongson/
obj-y += mediatek/
obj-y += qcom/
obj-y += stm32/

30
drivers/dma/loongson/Kconfig Normal file
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@ -0,0 +1,30 @@
# SPDX-License-Identifier: GPL-2.0-only
#
# Loongson DMA controllers drivers
#
if MACH_LOONGSON32 || MACH_LOONGSON64 || COMPILE_TEST
config LOONGSON1_APB_DMA
tristate "Loongson1 APB DMA support"
depends on MACH_LOONGSON32 || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
This selects support for the APB DMA controller in Loongson1 SoCs,
which is required by Loongson1 NAND and audio support.
config LOONGSON2_APB_DMA
tristate "Loongson2 APB DMA support"
depends on MACH_LOONGSON64 || COMPILE_TEST
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the Loongson2 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.
endif

3
drivers/dma/loongson/Makefile Normal file
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@ -0,0 +1,3 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_LOONGSON1_APB_DMA) += loongson1-apb-dma.o
obj-$(CONFIG_LOONGSON2_APB_DMA) += loongson2-apb-dma.o

4
drivers/dma/loongson1-apb-dma.c → drivers/dma/loongson/loongson1-apb-dma.c
View File

@ -16,8 +16,8 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include "dmaengine.h"
#include "virt-dma.h"
#include "../dmaengine.h"
#include "../virt-dma.h"
/* Loongson-1 DMA Control Register */
#define LS1X_DMA_CTRL 0x0

4
drivers/dma/loongson2-apb-dma.c → drivers/dma/loongson/loongson2-apb-dma.c
View File

@ -17,8 +17,8 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include "dmaengine.h"
#include "virt-dma.h"
#include "../dmaengine.h"
#include "../virt-dma.h"
/* Global Configuration Register */
#define LDMA_ORDER_ERG 0x0