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gpu: ipu-v3: Add support for double read/write reduction

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Allow to skip writing odd chroma rows by setting the RDRW bit for
4:2:0 chroma subsampled formats for any IDMAC write channel. This
also allows to skip reading odd rows for the VDIC read channel.

Signed-off-by: Philipp Zabel <[email protected]>
This commit is contained in:
Philipp Zabel 2014-09-17 15:44:54 +02:00
commit e1e9733cd3
2 changed files with 7 additions and 0 deletions
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1
include/video/imx-ipu-v3.h
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@ -250,6 +250,7 @@ struct ipu_image {
void ipu_cpmem_zero(struct ipuv3_channel *ch);
void ipu_cpmem_set_resolution(struct ipuv3_channel *ch, int xres, int yres);
void ipu_cpmem_skip_odd_chroma_rows(struct ipuv3_channel *ch);
void ipu_cpmem_set_stride(struct ipuv3_channel *ch, int stride);
void ipu_cpmem_set_high_priority(struct ipuv3_channel *ch);
void ipu_cpmem_set_buffer(struct ipuv3_channel *ch, int bufnum, dma_addr_t buf);