dmaengine: stm32: New directory for STM32 DMA controllers drivers

Gather the STM32 DMA controllers under drivers/dma/stm32/
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20240531150712.2503554-3-amelie.delaunay@foss.st.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/Kconfig

@@ -568,38 +568,6 @@ config ST_FDMA
 	  Say Y here if you have such a chipset.
 	  If unsure, say N.
 
-config STM32_DMA
-	bool "STMicroelectronics STM32 DMA support"
-	depends on ARCH_STM32 || COMPILE_TEST
-	select DMA_ENGINE
-	select DMA_VIRTUAL_CHANNELS
-	help
-	  Enable support for the on-chip DMA controller on STMicroelectronics
-	  STM32 MCUs.
-	  If you have a board based on such a MCU and wish to use DMA say Y
-	  here.
-
-config STM32_DMAMUX
-	bool "STMicroelectronics STM32 dma multiplexer support"
-	depends on STM32_DMA || COMPILE_TEST
-	help
-	  Enable support for the on-chip DMA multiplexer on STMicroelectronics
-	  STM32 MCUs.
-	  If you have a board based on such a MCU and wish to use DMAMUX say Y
-	  here.
-
-config STM32_MDMA
-	bool "STMicroelectronics STM32 master dma support"
-	depends on ARCH_STM32 || COMPILE_TEST
-	depends on OF
-	select DMA_ENGINE
-	select DMA_VIRTUAL_CHANNELS
-	help
-	  Enable support for the on-chip MDMA controller on STMicroelectronics
-	  STM32 platforms.
-	  If you have a board based on STM32 SoC and wish to use the master DMA
-	  say Y here.
-
 config SPRD_DMA
 	tristate "Spreadtrum DMA support"
 	depends on ARCH_SPRD || COMPILE_TEST
@@ -772,6 +740,8 @@ source "drivers/dma/fsl-dpaa2-qdma/Kconfig"
 
 source "drivers/dma/lgm/Kconfig"
 
+source "drivers/dma/stm32/Kconfig"
+
 # clients
 comment "DMA Clients"
 	depends on DMA_ENGINE

drivers/dma/Makefile

@@ -70,9 +70,6 @@ obj-$(CONFIG_PXA_DMA) += pxa_dma.o
 obj-$(CONFIG_RENESAS_DMA) += sh/
 obj-$(CONFIG_SF_PDMA) += sf-pdma/
 obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o
-obj-$(CONFIG_STM32_DMA) += stm32-dma.o
-obj-$(CONFIG_STM32_DMAMUX) += stm32-dmamux.o
-obj-$(CONFIG_STM32_MDMA) += stm32-mdma.o
 obj-$(CONFIG_SPRD_DMA) += sprd-dma.o
 obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o
 obj-$(CONFIG_TEGRA186_GPC_DMA) += tegra186-gpc-dma.o
@@ -88,5 +85,6 @@ obj-$(CONFIG_INTEL_LDMA) += lgm/
 
 obj-y += mediatek/
 obj-y += qcom/
+obj-y += stm32/
 obj-y += ti/
 obj-y += xilinx/

drivers/dma/stm32/Kconfig

+# SPDX-License-Identifier: GPL-2.0-only
+#
+# STM32 DMA controllers drivers
+#
+if ARCH_STM32 || COMPILE_TEST
+
+config STM32_DMA
+	bool "STMicroelectronics STM32 DMA support"
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+	help
+	  Enable support for the on-chip DMA controller on STMicroelectronics
+	  STM32 platforms.
+	  If you have a board based on STM32 SoC with such DMA controller
+	  and want to use DMA say Y here.
+
+config STM32_DMAMUX
+	bool "STMicroelectronics STM32 DMA multiplexer support"
+	depends on STM32_DMA
+	help
+	  Enable support for the on-chip DMA multiplexer on STMicroelectronics
+	  STM32 platforms.
+	  If you have a board based on STM32 SoC with such DMA multiplexer
+	  and want to use DMAMUX say Y here.
+
+config STM32_MDMA
+	bool "STMicroelectronics STM32 master DMA support"
+	depends on OF
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+	help
+	  Enable support for the on-chip MDMA controller on STMicroelectronics
+	  STM32 platforms.
+	  If you have a board based on STM32 SoC with such DMA controller
+	  and want to use MDMA say Y here.
+
+endif

drivers/dma/stm32/Makefile

+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_STM32_DMA) += stm32-dma.o
+obj-$(CONFIG_STM32_DMAMUX) += stm32-dmamux.o
+obj-$(CONFIG_STM32_MDMA) += stm32-mdma.o

drivers/dma/stm32-dma.c → drivers/dma/stm32/stm32-dma.c

@@ -28,7 +28,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 
-#include "virt-dma.h"
+#include "../virt-dma.h"
 
 #define STM32_DMA_LISR			0x0000 /* DMA Low Int Status Reg */
 #define STM32_DMA_HISR			0x0004 /* DMA High Int Status Reg */

drivers/dma/stm32-mdma.c → drivers/dma/stm32/stm32-mdma.c

@@ -30,7 +30,7 @@
 #include <linux/reset.h>
 #include <linux/slab.h>
 
-#include "virt-dma.h"
+#include "../virt-dma.h"
 
 #define STM32_MDMA_GISR0		0x0000 /* MDMA Int Status Reg 1 */