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>

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
old mode 100644 (file)
new mode 100755 (executable)
index c4e5ba3..6ccafbc
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -312,41 +312,62 @@ 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;
+               w = dma_read(CCR2(lch));
+               w &= ~0x03;
 
-       switch (mode) {
-       case OMAP_DMA_CONSTANT_FILL:
-               w |= 0x01;
-               break;
-       case OMAP_DMA_TRANSPARENT_COPY:
-               w |= 0x02;
-               break;
-       case OMAP_DMA_COLOR_DIS:
-               break;
-       default:
-               BUG();
+               switch (mode) {
+               case OMAP_DMA_CONSTANT_FILL:
+                       w |= 0x01;
+                       break;
+               case OMAP_DMA_TRANSPARENT_COPY:
+                       w |= 0x02;
+                       break;
+               case OMAP_DMA_COLOR_DIS:
+                       break;
+               default:
+                       BUG();
+               }
+               dma_write(w, CCR2(lch));
+
+               w = dma_read(LCH_CTRL(lch));
+               w &= ~0x0f;
+               /* Default is channel type 2D */
+               if (mode) {
+                       dma_write((u16)color, COLOR_L(lch));
+                       dma_write((u16)(color >> 16), COLOR_U(lch));
+                       w |= 1;         /* Channel type G */
+               }
+               dma_write(w, LCH_CTRL(lch));
        }
-       dma_write(w, CCR2(lch));
 
-       w = dma_read(LCH_CTRL(lch));
-       w &= ~0x0f;
-       /* Default is channel type 2D */
-       if (mode) {
-               dma_write((u16)color, COLOR_L(lch));
-               dma_write((u16)(color >> 16), COLOR_U(lch));
-               w |= 1;         /* Channel type G */
+       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));
        }
-       dma_write(w, LCH_CTRL(lch));
 }
 EXPORT_SYMBOL(omap_set_dma_color_mode);
 

diff --git a/arch/arm/plat-omap/include/mach/dma.h b/arch/arm/plat-omap/include/mach/dma.h
index 54fe966..35fefdb 100644 (file)
--- a/arch/arm/plat-omap/include/mach/dma.h
+++ b/arch/arm/plat-omap/include/mach/dma.h
@@ -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
 
 /*----------------------------------------------------------------------------*/