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, 30 insertions, 0 deletions

diff --git a/dma/stm32_dmamux.h b/dma/stm32_dmamux.h
new file mode 100644
index 0000000..064393a
--- /dev/null
+++ b/dma/stm32_dmamux.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <stdint.h>
+#include <mmio/mmio.h>
+
+struct STM32_DMAMUX_reg_v1_t {
+	/**
+	 * Not all parts offer all channels!
+	 * WB: 14, G4: 16...
+	 */
+	volatile uint32_t CCR[20];
+	volatile uint32_t _reserved1[12];
+	volatile uint32_t CSR; // 0x80
+	volatile uint32_t CFR; // 0x84
+	volatile uint32_t _reserved2[30];
+	/**
+	 * Not all parts offer all requests!
+	 * WB/G4: 4, H7: 8
+	 */
+	volatile uint32_t RGCR[8]; // 0x100
+	volatile uint32_t _reserved3[8];
+	volatile uint32_t RGSR; // 0x140
+	volatile uint32_t RGCFR;
+};
+
+template <typename T>
+class STM32_DMAMUX_t : public mmio_ptr<T> {
+	public:
+		using mmio_ptr<T>::ptr;
+};
\ No newline at end of file