1 files changed, 98 insertions, 0 deletions
diff --git a/bsps/arm/lpc176x/include/bsp/dma.h b/bsps/arm/lpc176x/include/bsp/dma.h
new file mode 100644
index 0000000000..65edfc4e30
--- /dev/null
+++ b/bsps/arm/lpc176x/include/bsp/dma.h
@@ -0,0 +1,98 @@
+/**
+ * @file
+ *
+ * @ingroup lpc176x_dma
+ *
+ * @brief Direct memory access (DMA) support.
+ */
+
+/*
+ * Copyright (c) 2008, 2009
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_LPC176X_DMA_H
+#define LIBBSP_ARM_LPC176X_DMA_H
+
+#include <rtems.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup lpc176x_dma DMA Support
+ *
+ * @ingroup lpc176x
+ *
+ * @brief Direct memory access (DMA) support.
+ *
+ * @{
+ */
+
+/**
+ * @brief Initializes the general purpose DMA.
+ */
+void lpc176x_dma_initialize( void );
+
+/**
+ * @brief Tries to obtain the DMA channel @a channel.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_INVALID_ID Invalid channel number.
+ * @retval RTEMS_RESOURCE_IN_USE Channel already occupied.
+ */
+rtems_status_code lpc176x_dma_channel_obtain( unsigned channel );
+
+/**
+ * @brief Releases the DMA channel @a channel.
+ *
+ * You must have obtained this channel with lpc176x_dma_channel_obtain()
+ * previously.
+ *
+ * If the channel number @a channel is out of range nothing will happen.
+ */
+void lpc176x_dma_channel_release( unsigned channel );
+
+/**
+ * @brief Disables the DMA channel @a channel.
+ *
+ * If @a force is @c false the channel will be halted and disabled when the
+ * channel is inactive otherwise it will be disabled immediately.
+ *
+ * If the channel number @a channel is out of range nothing will happen.
+ */
+void lpc176x_dma_channel_disable(
+  unsigned channel,
+  bool     force
+);
+
+rtems_status_code lpc176x_dma_copy_initialize( void );
+
+rtems_status_code lpc176x_dma_copy_release( void );
+
+rtems_status_code lpc176x_dma_copy(
+  unsigned    channel,
+  const void *dest,
+  const void *src,
+  size_t      n,
+  size_t      width
+);
+
+rtems_status_code lpc176x_dma_copy_wait( unsigned channel );
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_LPC176X_DMA_H */