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authorKyungmin Park <kyungmin.park@samsung.com>2006-06-26 16:16:14 -0700
committerTony Lindgren <tony@atomide.com>2006-06-26 16:16:14 -0700
commit6dc3c8f20159530d5553d0f8decc9454916d7495 (patch)
treeaee8f14a8a327ee7cbe6106916e3bb5742d21db2
parente32f7ec2e8bf00756c74a5e6a80bc59e949dd81d (diff)
ARM: OMAP: OMAP2 DMA burst support
OMAP2 DMA burst setting support Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
-rw-r--r--arch/arm/plat-omap/dma.c41
-rw-r--r--include/asm-arm/arch-omap/dma.h4
2 files changed, 39 insertions, 6 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index aa1cf79f954..8e7c33656b5 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -292,22 +292,39 @@ void omap_set_dma_src_data_pack(int lch, int enable)
void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
{
+ unsigned int burst = 0;
OMAP_DMA_CSDP_REG(lch) &= ~(0x03 << 7);
switch (burst_mode) {
case OMAP_DMA_DATA_BURST_DIS:
break;
case OMAP_DMA_DATA_BURST_4:
- OMAP_DMA_CSDP_REG(lch) |= (0x02 << 7);
+ if (cpu_is_omap24xx())
+ burst = 0x1;
+ else
+ burst = 0x2;
break;
case OMAP_DMA_DATA_BURST_8:
- /* not supported by current hardware
+ if (cpu_is_omap24xx()) {
+ burst = 0x2;
+ break;
+ }
+ /* not supported by current hardware on OMAP1
* w |= (0x03 << 7);
* fall through
*/
+ case OMAP_DMA_DATA_BURST_16:
+ if (cpu_is_omap24xx()) {
+ burst = 0x3;
+ break;
+ }
+ /* OMAP1 don't support burst 16
+ * fall through
+ */
default:
BUG();
}
+ OMAP_DMA_CSDP_REG(lch) |= (burst << 7);
}
/* Note that dest_port is only for OMAP1 */
@@ -354,22 +371,38 @@ void omap_set_dma_dest_data_pack(int lch, int enable)
void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
{
+ unsigned int burst = 0;
OMAP_DMA_CSDP_REG(lch) &= ~(0x03 << 14);
switch (burst_mode) {
case OMAP_DMA_DATA_BURST_DIS:
break;
case OMAP_DMA_DATA_BURST_4:
- OMAP_DMA_CSDP_REG(lch) |= (0x02 << 14);
+ if (cpu_is_omap24xx())
+ burst = 0x1;
+ else
+ burst = 0x2;
break;
case OMAP_DMA_DATA_BURST_8:
- OMAP_DMA_CSDP_REG(lch) |= (0x03 << 14);
+ if (cpu_is_omap24xx())
+ burst = 0x2;
+ else
+ burst = 0x3;
break;
+ case OMAP_DMA_DATA_BURST_16:
+ if (cpu_is_omap24xx()) {
+ burst = 0x3;
+ break;
+ }
+ /* OMAP1 don't support burst 16
+ * fall through
+ */
default:
printk(KERN_ERR "Invalid DMA burst mode\n");
BUG();
return;
}
+ OMAP_DMA_CSDP_REG(lch) |= (burst << 14);
}
static inline void omap_enable_channel_irq(int lch)
diff --git a/include/asm-arm/arch-omap/dma.h b/include/asm-arm/arch-omap/dma.h
index ca1202312a4..e081400b658 100644
--- a/include/asm-arm/arch-omap/dma.h
+++ b/include/asm-arm/arch-omap/dma.h
@@ -315,11 +315,11 @@ enum {
OMAP_LCD_DMA_B2_BOTTOM
};
-/* REVISIT: Check if BURST_4 is really 1 (or 2) */
enum omap_dma_burst_mode {
OMAP_DMA_DATA_BURST_DIS = 0,
OMAP_DMA_DATA_BURST_4,
- OMAP_DMA_DATA_BURST_8
+ OMAP_DMA_DATA_BURST_8,
+ OMAP_DMA_DATA_BURST_16,
};
enum omap_dma_color_mode {