ddma: phytium: Add DDMA controller driver support

This patch provides DDMA (DEVICE DMA) support mainly for DMA transmission on low-speed devices, such as UART/SPI.

Signed-off-by: Li Guohui <liguohui2061@phytium.com.cn>
Signed-off-by: Liu Tianyu <liutianyu1250@phytium.com.cn>
Signed-off-by: Lan Hengyu <lanhengyu1395@phytium.com.cn>
Signed-off-by: Li Mingzhe <limingzhe1839@phytium.com.cn>
Signed-off-by: Wang Yinfeng <wangyinfeng@phytium.com.cn>
Link: deepin-community#142
(cherry picked from commit 8d9b728)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: hhhui-L

drivers/dma/Kconfig

@@ -749,6 +749,14 @@ config XILINX_ZYNQMP_DPDMA
 	  driver provides the dmaengine required by the DisplayPort subsystem
 	  display driver.
 
+config PHYTIUM_DDMA
+	bool "Phytium PE220x DDMA support"
+	depends on (ARCH_PHYTIUM || COMPILE_TEST)
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+	help
+	  Enable support for Phytium PE220x DDMA controller.
+
 # driver files
 source "drivers/dma/amd/Kconfig"
 

drivers/dma/Makefile

@@ -92,3 +92,4 @@ obj-y += qcom/
 obj-y += stm32/
 obj-y += ti/
 obj-y += xilinx/
+obj-y += phytium/

drivers/dma/phytium/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_PHYTIUM_DDMA) += phytium-ddmac.o