diff options
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 2ab224c8e16c..1d959965ff52 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -29,6 +29,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> +#include <linux/slab.h> #include <asm/system.h> #include <mach/hardware.h> @@ -936,6 +937,15 @@ void omap_start_dma(int lch) { u32 l; + /* + * The CPC/CDAC register needs to be initialized to zero + * before starting dma transfer. + */ + if (cpu_is_omap15xx()) + dma_write(0, CPC(lch)); + else + dma_write(0, CDAC(lch)); + if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) { int next_lch, cur_lch; char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT]; |