drivers: dma: Introduce support for SiWx91x

Implement DMA driver for siwx917 using UDMA peripheral. For now,
Scatter/Gather DMA is not yet supported.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>

Author: jerome-pouiller

drivers/dma/CMakeLists.txt

@@ -41,6 +41,7 @@ zephyr_library_sources_ifdef(CONFIG_DMA_INFINEON_CAT1	dma_ifx_cat1.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_SEDI		dma_sedi.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_SI32		dma_si32.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_SILABS_LDMA		dma_silabs_ldma.c)
+zephyr_library_sources_ifdef(CONFIG_DMA_SILABS_SIWX91X	dma_silabs_siwx91x.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_SMARTBOND   dma_smartbond.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_NXP_SOF_HOST_DMA dma_nxp_sof_host_dma.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_EMUL	    dma_emul.c)

drivers/dma/Kconfig

@@ -76,6 +76,8 @@ source "drivers/dma/Kconfig.si32"
 
 source "drivers/dma/Kconfig.silabs"
 
+source "drivers/dma/Kconfig.siwx91x"
+
 source "drivers/dma/Kconfig.smartbond"
 
 source "drivers/dma/Kconfig.nxp_sof_host_dma"

drivers/dma/Kconfig.siwx91x

@@ -0,0 +1,9 @@
+# Copyright (c) 2024 Silicon Laboratories Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+config DMA_SILABS_SIWX91X
+	bool "Silabs SiWx91x DMA driver"
+	default y
+	depends on DT_HAS_SILABS_SIWX91X_DMA_ENABLED
+	help
+	  Enable the High Power(HP)/Ultra Low Power(ULP) DMA driver for the Silabs SiWx91x SoC series.