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ARM: OMAP2/3: DMA: implement trans copy and const fill 

Implement transparent copy and constant fill features for OMAP2/3.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tomi Valkeinen 2009-05-28 13:23:51 -07:00 committed by Tony Lindgren
parent ebe3b0e787
commit 0815f8eaae
2 changed files with 50 additions and 28 deletions
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33
arch/arm/plat-omap/dma.c
View File

@ -310,14 +310,10 @@ EXPORT_SYMBOL(omap_set_dma_transfer_params);
void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
{
u16 w;
BUG_ON(omap_dma_in_1510_mode());
if (cpu_class_is_omap2()) {
REVISIT_24XX();
return;
}
if (cpu_class_is_omap1()) {
u16 w;
w = dma_read(CCR2(lch));
w &= ~0x03;
@ -346,6 +342,31 @@ void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
}
dma_write(w, LCH_CTRL(lch));
}
if (cpu_class_is_omap2()) {
u32 val;
val = dma_read(CCR(lch));
val &= ~((1 << 17) | (1 << 16));
switch (mode) {
case OMAP_DMA_CONSTANT_FILL:
val |= 1 << 16;
break;
case OMAP_DMA_TRANSPARENT_COPY:
val |= 1 << 17;
break;
case OMAP_DMA_COLOR_DIS:
break;
default:
BUG();
}
dma_write(val, CCR(lch));
color &= 0xffffff;
dma_write(color, COLOR(lch));
}
}
EXPORT_SYMBOL(omap_set_dma_color_mode);
void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode)

1
arch/arm/plat-omap/include/mach/dma.h
View File

@ -144,6 +144,7 @@
#define OMAP_DMA4_CSSA_U(n) 0
#define OMAP_DMA4_CDSA_L(n) 0
#define OMAP_DMA4_CDSA_U(n) 0
#define OMAP1_DMA_COLOR(n) 0
/*----------------------------------------------------------------------------*/