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| author | Eric Miao <ycmiao@ycmiao-hp520.(none)> | 2008-12-17 16:50:43 +0800 |
|---|---|---|
| committer | Eric Miao <eric.miao@marvell.com> | 2008-12-29 17:59:17 +0800 |
| commit | 6e354846e807e037751fdc8faaee8ad492177113 (patch) | |
| tree | eb31ad176a03091ff02560d2623ed9952fa19dc6 /drivers/video/pxafb.h | |
| parent | 7e4b19c95c8632b543bd510ec6c710bebb53b840 (diff) | |
| download | linux-6e354846e807e037751fdc8faaee8ad492177113.tar.gz linux-6e354846e807e037751fdc8faaee8ad492177113.tar.bz2 linux-6e354846e807e037751fdc8faaee8ad492177113.zip | |
[ARM] pxafb: add support for FBIOPAN_DISPLAY by dma braching
dma branching is enabled by extending the current setup_frame_dma()
function to allow a 2nd set of frame/palette dma descriptors to be
used.
As a result, pxafb_dma_buff.dma_desc[], pxafb_dma_buff.pal_desc[]
and pxafb_info.fdadr[] are doubled.
This allows maximum re-use of the current dma setup code, although
the pxafb_info.fdadr[xx] for FBRx register values looks a bit odd.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Eric Miao <ycmiao@ycmiao-hp520.(none)>
Diffstat (limited to 'drivers/video/pxafb.h')
| -rw-r--r-- | drivers/video/pxafb.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/video/pxafb.h b/drivers/video/pxafb.h index 0981938682ef..e0f90f4c467d 100644 --- a/drivers/video/pxafb.h +++ b/drivers/video/pxafb.h @@ -54,11 +54,14 @@ enum { #define PALETTE_SIZE (256 * 4) #define CMD_BUFF_SIZE (1024 * 50) +/* NOTE: the palette and frame dma descriptors are doubled to allow + * the 2nd set for branch settings (FBRx) + */ struct pxafb_dma_buff { unsigned char palette[PAL_MAX * PALETTE_SIZE]; uint16_t cmd_buff[CMD_BUFF_SIZE]; - struct pxafb_dma_descriptor pal_desc[PAL_MAX]; - struct pxafb_dma_descriptor dma_desc[DMA_MAX]; + struct pxafb_dma_descriptor pal_desc[PAL_MAX * 2]; + struct pxafb_dma_descriptor dma_desc[DMA_MAX * 2]; }; struct pxafb_info { @@ -71,7 +74,7 @@ struct pxafb_info { struct pxafb_dma_buff *dma_buff; size_t dma_buff_size; dma_addr_t dma_buff_phys; - dma_addr_t fdadr[DMA_MAX]; + dma_addr_t fdadr[DMA_MAX * 2]; void __iomem *video_mem; /* virtual address of frame buffer */ unsigned long video_mem_phys; /* physical address of frame buffer */ |