drivers: dma: rpi_pico: add support for RaspberryPi Pico DMA

Adding RaspberryPi Pico DMA driver.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

boards/arm/rpi_pico/rpi_pico.yaml

@@ -18,3 +18,4 @@ supported:
   - watchdog
   - pwm
   - flash
+  - dma

drivers/dma/CMakeLists.txt

@@ -27,3 +27,4 @@ zephyr_library_sources_ifdef(CONFIG_DMA_GD32		dma_gd32.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_ESP32		dma_esp32_gdma.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_MCHP_XEC	dma_mchp_xec.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_XMC4XXX		dma_xmc4xxx.c)
+zephyr_library_sources_ifdef(CONFIG_DMA_RPI_PICO	dma_rpi_pico.c)

drivers/dma/Kconfig

@@ -56,4 +56,6 @@ source "drivers/dma/Kconfig.xec"
 
 source "drivers/dma/Kconfig.xmc4xxx"
 
+source "drivers/dma/Kconfig.rpi_pico"
+
 endif # DMA

drivers/dma/Kconfig.rpi_pico

@@ -0,0 +1,12 @@
+# Copyright (c) 2023 Tokita, Hiroshi <[email protected]>
+# SPDX-License-Identifier: Apache-2.0
+
+config DMA_RPI_PICO
+	bool "Raspberry Pi Pico DMA driver"
+	default y
+	depends on DT_HAS_RASPBERRYPI_PICO_DMA_ENABLED
+	select PICOSDK_USE_DMA
+	select PICOSDK_USE_CLAIM
+	depends on RESET
+	help
+	  DMA driver for RaspberryPi Pico.