From ad10e96811ec6509a13a252b6a84f163733f9549 Mon Sep 17 00:00:00 2001
From: Karl Palsson <karlp@tweak.net.au>
Date: Sun, 30 Dec 2018 21:03:40 +0000
Subject: [PATCH] stm32l4:dma: add Channel Selection defines

Far from complete support for the channel selection systems on f0/l4,
but at least brings in the defines needed for doing this yourself.

Fixes https://github.com/libopencm3/libopencm3/issues/1001
---
 include/libopencm3/stm32/l4/dma.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/libopencm3/stm32/l4/dma.h b/include/libopencm3/stm32/l4/dma.h
index 9b1a180e..3a5ee8d1 100644
--- a/include/libopencm3/stm32/l4/dma.h
+++ b/include/libopencm3/stm32/l4/dma.h
@@ -34,4 +34,9 @@
 
 #include <libopencm3/stm32/common/dma_common_l1f013.h>
 
+/* DMA channel selection register (DMAx_CSELR) */
+#define DMA_CSELR(dma_base)		MMIO32((dma_base) + 0xA8)
+#define DMA1_CSELR			DMA_CSELR(DMA1)
+#define DMA2_CSELR			DMA_CSELR(DMA2)
+
 #endif