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| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2006-06-26 16:16:06 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2006-06-26 16:16:06 -0700 |
| commit | eca9e56eb8dfcf2b8b966c1c49e4622196f0586d (patch) | |
| tree | 09dfd83d3e56f1dfc52475f8e539b86b382d468b /arch/arm/plat-omap | |
| parent | e8cdf7bdf3efbb1e285fd82a86a3f8fae5ae2665 (diff) | |
| download | kernel_samsung_smdk4412-eca9e56eb8dfcf2b8b966c1c49e4622196f0586d.zip kernel_samsung_smdk4412-eca9e56eb8dfcf2b8b966c1c49e4622196f0586d.tar.gz kernel_samsung_smdk4412-eca9e56eb8dfcf2b8b966c1c49e4622196f0586d.tar.bz2 | |
ARM: OMAP: DMA transfer parameter configuration fix
Fix for re-using OMAP DMA channel with different transfer parameters.
Bits in the CCR register need to be cleaned as well in some cases.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index 5dac423..aa1cf79 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -166,18 +166,24 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count, if (cpu_is_omap24xx() && dma_trigger) { u32 val = OMAP_DMA_CCR_REG(lch); + val &= ~(3 << 19); if (dma_trigger > 63) val |= 1 << 20; if (dma_trigger > 31) val |= 1 << 19; + val &= ~(0x1f); val |= (dma_trigger & 0x1f); if (sync_mode & OMAP_DMA_SYNC_FRAME) val |= 1 << 5; + else + val &= ~(1 << 5); if (sync_mode & OMAP_DMA_SYNC_BLOCK) val |= 1 << 18; + else + val &= ~(1 << 18); if (src_or_dst_synch) val |= 1 << 24; /* source synch */ |