From: Frank Li <Frank.li@nxp.com>
To: Binbin Zhou <zhoubinbin@loongson.cn>
Cc: Binbin Zhou <zhoubb.aaron@gmail.com>,
Huacai Chen <chenhuacai@loongson.cn>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Vinod Koul <vkoul@kernel.org>,
Frank Li <Frank.Li@kernel.org>,
dmaengine@vger.kernel.org, Huacai Chen <chenhuacai@kernel.org>,
Xuerui Wang <kernel@xen0n.name>,
loongarch@lists.linux.dev, devicetree@vger.kernel.org,
Keguang Zhang <keguang.zhang@gmail.com>,
linux-mips@vger.kernel.org
Subject: Re: [PATCH v3 1/6] dmaengine: loongson: New directory for Loongson DMA controllers drivers
Date: Wed, 25 Feb 2026 13:04:07 -0500 [thread overview]
Message-ID: <aZ85l1PSRIAJrm3R@lizhi-Precision-Tower-5810> (raw)
In-Reply-To: <44578a06151437a1889b51566d72dc7356e03506.1771989596.git.zhoubinbin@loongson.cn>
On Wed, Feb 25, 2026 at 03:40:39PM +0800, Binbin Zhou wrote:
> Gather the Loongson DMA controllers under drivers/dma/loongson/
>
> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
> ---
Reviewed-by: Frank Li <Frank.Li@nxp.com>
> MAINTAINERS | 3 +-
> drivers/dma/Kconfig | 25 ++---------------
> drivers/dma/Makefile | 3 +-
> drivers/dma/loongson/Kconfig | 28 +++++++++++++++++++
> drivers/dma/loongson/Makefile | 3 ++
> .../dma/{ => loongson}/loongson1-apb-dma.c | 4 +--
> .../dma/{ => loongson}/loongson2-apb-dma.c | 4 +--
> 7 files changed, 40 insertions(+), 30 deletions(-)
> create mode 100644 drivers/dma/loongson/Kconfig
> create mode 100644 drivers/dma/loongson/Makefile
> rename drivers/dma/{ => loongson}/loongson1-apb-dma.c (99%)
> rename drivers/dma/{ => loongson}/loongson2-apb-dma.c (99%)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 55af015174a5..e8cd1e2dac13 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -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
> diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
> index 66cda7cc9f7a..1b84c5b11654 100644
> --- a/drivers/dma/Kconfig
> +++ b/drivers/dma/Kconfig
> @@ -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
> @@ -774,6 +751,8 @@ source "drivers/dma/fsl-dpaa2-qdma/Kconfig"
>
> source "drivers/dma/lgm/Kconfig"
>
> +source "drivers/dma/loongson/Kconfig"
> +
> source "drivers/dma/stm32/Kconfig"
>
> # clients
> diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
> index a54d7688392b..963b10494ee5 100644
> --- a/drivers/dma/Makefile
> +++ b/drivers/dma/Makefile
> @@ -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
> @@ -87,6 +85,7 @@ 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/
> diff --git a/drivers/dma/loongson/Kconfig b/drivers/dma/loongson/Kconfig
> new file mode 100644
> index 000000000000..9dbdaef5a59f
> --- /dev/null
> +++ b/drivers/dma/loongson/Kconfig
> @@ -0,0 +1,28 @@
> +# 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"
> + 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"
> + 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
> diff --git a/drivers/dma/loongson/Makefile b/drivers/dma/loongson/Makefile
> new file mode 100644
> index 000000000000..6cdd08065e92
> --- /dev/null
> +++ b/drivers/dma/loongson/Makefile
> @@ -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
> diff --git a/drivers/dma/loongson1-apb-dma.c b/drivers/dma/loongson/loongson1-apb-dma.c
> similarity index 99%
> rename from drivers/dma/loongson1-apb-dma.c
> rename to drivers/dma/loongson/loongson1-apb-dma.c
> index 2e347aba9af8..89786cbd20ab 100644
> --- a/drivers/dma/loongson1-apb-dma.c
> +++ b/drivers/dma/loongson/loongson1-apb-dma.c
> @@ -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
> diff --git a/drivers/dma/loongson2-apb-dma.c b/drivers/dma/loongson/loongson2-apb-dma.c
> similarity index 99%
> rename from drivers/dma/loongson2-apb-dma.c
> rename to drivers/dma/loongson/loongson2-apb-dma.c
> index b981475e6779..fc7d9f4a96ec 100644
> --- a/drivers/dma/loongson2-apb-dma.c
> +++ b/drivers/dma/loongson/loongson2-apb-dma.c
> @@ -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
> --
> 2.52.0
>
next prev parent reply other threads:[~2026-02-25 18:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-25 7:40 [PATCH v3 0/6] dmaengine: Add Loongson Multi-Channel DMA controller support Binbin Zhou
2026-02-25 7:40 ` [PATCH v3 1/6] dmaengine: loongson: New directory for Loongson DMA controllers drivers Binbin Zhou
2026-02-25 18:04 ` Frank Li [this message]
2026-02-25 7:40 ` [PATCH v3 2/6] dmaengine: loongson: loongson2-apb: Convert to dmaenginem_async_device_register() Binbin Zhou
2026-02-25 7:40 ` [PATCH v3 3/6] dmaengine: loongson: loongson2-apb: Convert to devm_clk_get_enabled() Binbin Zhou
2026-02-25 18:05 ` Frank Li
2026-02-25 7:41 ` [PATCH v3 4/6] dmaengine: loongson: loongson2-apb: Simplify locking with guard() and scoped_guard() Binbin Zhou
2026-02-25 18:06 ` Frank Li
2026-02-25 7:41 ` [PATCH v3 5/6] dt-bindings: dmaengine: Add Loongson Multi-Channel DMA controller Binbin Zhou
2026-03-06 0:52 ` Rob Herring (Arm)
2026-02-25 7:41 ` [PATCH v3 6/6] dmaengine: loongson: New driver for the " Binbin Zhou
2026-02-25 20:00 ` Frank Li
2026-02-26 8:18 ` Huacai Chen
2026-03-09 7:10 ` Vinod Koul
2026-03-09 8:05 ` Binbin Zhou
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