1 files changed, 16 insertions, 0 deletions
diff --git a/chip/stm32/stm32-dma.h b/chip/stm32/stm32-dma.h
new file mode 100644
index 0000000000..06233b9c93
--- /dev/null
+++ b/chip/stm32/stm32-dma.h
@@ -0,0 +1,16 @@
+/* Copyright 2016 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/**
+ * Select DMA stream-channel mapping
+ *
+ * This selects which stream (peripheral) to be used on a specific channel.
+ * Some STM32 chips simply logically OR requests, thus do not require this
+ * selection.
+ *
+ * @param channel: (Global) channel # base 0 (Note some STM32s use base 1)
+ * @param peripheral: Refer to the TRM for 'peripheral request signals'
+ */
+void dma_select_channel(enum dma_channel channel, unsigned char stream);