diff options
| author | Chris Fries <C.Fries@motorola.com> | 2010-11-11 17:39:06 -0600 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:36:42 -0800 |
| commit | ae9d0349aa9c45cb8779486f3d5fbface8c05f8b (patch) | |
| tree | 3df90fa736e0106a90f8a9eb9ace3174f70bfc4c /arch/arm/mach-tegra/include/mach/dma.h | |
| parent | 93b34bc619f44ea10e0ec63046e0c77f11cfa9d3 (diff) | |
[ARM] tegra: dma: Single buffered continuous DMA
- Added "single buffer continuous DMA" mode in addition to the
"double buffer continuous DMA" mode that is already implemented
- Changed the queuing of next buffer to be more flexible for
continuous DMA. It can now get in-flight right after a transfer
starts, or whenever the client enqueues a buffer.
Signed-off-by: Iliyan Malchev <malchev@google.com>
Diffstat (limited to 'arch/arm/mach-tegra/include/mach/dma.h')
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/dma.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/mach-tegra/include/mach/dma.h b/arch/arm/mach-tegra/include/mach/dma.h index 243050693eec..f9b09cbd8166 100644 --- a/arch/arm/mach-tegra/include/mach/dma.h +++ b/arch/arm/mach-tegra/include/mach/dma.h @@ -61,7 +61,9 @@ struct tegra_dma_channel; enum tegra_dma_mode { TEGRA_DMA_SHARED = 1, TEGRA_DMA_MODE_CONTINUOUS = 2, - TEGRA_DMA_MODE_ONESHOT = 4, + TEGRA_DMA_MODE_CONTINUOUS_DOUBLE = TEGRA_DMA_MODE_CONTINUOUS, + TEGRA_DMA_MODE_CONTINUOUS_SINGLE = 4, + TEGRA_DMA_MODE_ONESHOT = 8, }; enum tegra_dma_req_error { @@ -146,9 +148,11 @@ void tegra_dma_flush(struct tegra_dma_channel *ch); bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch, struct tegra_dma_req *req); bool tegra_dma_is_empty(struct tegra_dma_channel *ch); +bool tegra_dma_is_stopped(struct tegra_dma_channel *ch); struct tegra_dma_channel *tegra_dma_allocate_channel(int mode); void tegra_dma_free_channel(struct tegra_dma_channel *ch); +int tegra_dma_cancel(struct tegra_dma_channel *ch); int __init tegra_dma_init(void); |