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>
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index aa1cf79..8e7c336 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -292,22 +292,39 @@
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_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)