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>

1 files changed, 49 insertions, 28 deletions

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 7fc8c045ad5d..58d98ad981e4 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -310,41 +310,62 @@ 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);