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Diffstat (limited to 'c/src/lib/libbsp/arm/lpc176x/misc/dma.c')
-rw-r--r--c/src/lib/libbsp/arm/lpc176x/misc/dma.c117
1 files changed, 0 insertions, 117 deletions
diff --git a/c/src/lib/libbsp/arm/lpc176x/misc/dma.c b/c/src/lib/libbsp/arm/lpc176x/misc/dma.c
deleted file mode 100644
index 10c7701484..0000000000
--- a/c/src/lib/libbsp/arm/lpc176x/misc/dma.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/**
- * @file
- *
- * @ingroup lpc176x_dma
- *
- * @brief Direct memory access (DMA) support.
- */
-
-/*
- * Copyright (c) 2008-2011 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Obere Lagerstr. 30
- * 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.
- */
-
-#include <rtems/endian.h>
-#include <bsp/dma.h>
-#include <bsp/io.h>
-
-/**
- * @brief Table that indicates if a channel is currently occupied.
- */
-static bool lpc176x_dma_channel_occupation[ GPDMA_CH_NUMBER ];
-
-void lpc176x_dma_initialize( void )
-{
- /* Enable module power */
- lpc176x_module_enable( LPC176X_MODULE_GPDMA, LPC176X_MODULE_PCLK_DEFAULT );
-
- /* Disable module */
- GPDMA_CONFIG = 0u;
-
- /* Reset registers */
- GPDMA_SOFT_SREQ = 0u;
- GPDMA_SOFT_BREQ = 0u;
- GPDMA_SOFT_LSREQ = 0u;
- GPDMA_SOFT_LBREQ = 0u;
- GPDMA_SYNC = 0u;
- GPDMA_CH0_CFG = 0u;
- GPDMA_CH1_CFG = 0u;
-
- /* Enable module */
-#if BYTE_ORDER == LITTLE_ENDIAN
- GPDMA_CONFIG = GPDMA_CONFIG_EN;
-#else
- GPDMA_CONFIG = GPDMA_CONFIG_EN | GPDMA_CONFIG_MODE;
-#endif
-}
-
-rtems_status_code lpc176x_dma_channel_obtain( const unsigned channel )
-{
- rtems_status_code status_code = RTEMS_INVALID_ID;
-
- if ( channel < GPDMA_CH_NUMBER ) {
- rtems_interrupt_level level = 0u;
- bool occupation = true;
-
- rtems_interrupt_disable( level );
- occupation = lpc176x_dma_channel_occupation[ channel ];
- lpc176x_dma_channel_occupation[ channel ] = true;
- rtems_interrupt_enable( level );
-
- status_code = occupation ? RTEMS_RESOURCE_IN_USE : RTEMS_SUCCESSFUL;
- }
-
- /* else implies that the channel is not valid. Also,
- there is nothing to do. */
-
- return status_code;
-}
-
-void lpc176x_dma_channel_release( const unsigned channel )
-{
- if ( channel < GPDMA_CH_NUMBER ) {
- lpc176x_dma_channel_occupation[ channel ] = false;
- }
-
- /* else implies that the channel is not valid. Also,
- there is nothing to do. */
-}
-
-void lpc176x_dma_channel_disable(
- const unsigned channel,
- const bool force
-)
-{
- if ( channel < GPDMA_CH_NUMBER ) {
- volatile lpc176x_dma_channel *ch = GPDMA_CH_BASE_ADDR( channel );
- uint32_t cfg = ch->cfg;
-
- if ( !force ) {
- /* Halt */
- ch->cfg |= GPDMA_CH_CFG_HALT;
-
- /* Wait for inactive */
- do {
- cfg = ch->cfg;
- } while ( ( cfg & GPDMA_CH_CFG_ACTIVE ) != 0u );
- }
-
- /* else implies that the channel is not to be forced. Also,
- there is nothing to do. */
-
- /* Disable */
- ch->cfg &= ~GPDMA_CH_CFG_EN;
- }
-
- /* else implies that the channel is not valid. Also,
- there is nothing to do. */
-}