drivers: dma: siwx91x: Add siwx91x GPDMA driver

Implement GPDMA driver for siwx91x device

Signed-off-by: Sai Santhosh Malae <[email protected]>

Author: smalae

drivers/dma/CMakeLists.txt

@@ -44,6 +44,7 @@ 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_SILABS_SIWX91X_GPDMA	dma_silabs_siwx91x_gpdma.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.siwx91x

@@ -9,10 +9,26 @@ config DMA_SILABS_SIWX91X
 	help
 	  Enable the High Power(HP)/Ultra Low Power(ULP) DMA driver for the Silabs SiWx91x SoC series.
 
+config DMA_SILABS_SIWX91X_GPDMA
+	bool "Silabs SiWx91x GPDMA driver"
+	default y
+	select SYS_MEM_BLOCKS
+	depends on DT_HAS_SILABS_SIWX91X_GPDMA_ENABLED
+	help
+	  Enable the GDMA driver for the Silabs SiWx91x SoC series.
+
 if DMA_SILABS_SIWX91X
 
 config DMA_SILABS_SIWX91X_SG_BUFFER_COUNT
 	int "The maximum allowable number of buffers for scatter-gather transfers"
 	default 30
 
 endif
+
+if DMA_SILABS_SIWX91X_GPDMA
+
+config GPDMA_SILABS_SIWX91X_DESCRIPTOR_COUNT
+	int "The maximum GPDMA descriptor count"
+	default 32
+
+endif