dma: convert to new style, add DMAMUX

DMAMUX is a channel/source muxer available on L4+,L5,H7,G0,G4,WB and WL
parts.

Signed-of-by: Karl Palsson <karlp@etactica.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/dma/stm32_dma.h b/dma/stm32_dma.h
new file mode 100644
index 0000000..afeaed5
--- /dev/null
+++ b/dma/stm32_dma.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include <stdint.h>
+#include <mmio/mmio.h>
+
+struct STM32_DMA_channel_reg_v1_t {
+	volatile uint32_t CR;
+	volatile uint32_t NDTR;
+	volatile uint32_t PAR;
+	volatile uint32_t MAR;
+	uint32_t _reserved;
+};
+
+struct STM32_DMA_reg_v1_t {
+	volatile uint32_t ISR;
+	volatile uint32_t IFCR;
+	STM32_DMA_channel_reg_v1_t C[7];
+};
+
+
+struct STM32_DMA_stream_reg_v2_t {
+	volatile uint32_t CR;
+	volatile uint32_t NDTR;
+	volatile uint32_t PAR;
+	volatile uint32_t M0AR;
+	volatile uint32_t M1AR;
+	volatile uint32_t FCR;
+};
+
+struct STM32_DMA_reg_v2_t {
+	volatile uint32_t LISR;
+	volatile uint32_t HISR;
+	volatile uint32_t LIFCR;
+	volatile uint32_t HIFCR;
+	STM32_DMA_stream_reg_v2_t S[8];
+};
+
+
+template <typename T>
+class STM32_DMA_t : public mmio_ptr<T> {
+	public:
+		using mmio_ptr<T>::ptr;
+};