Add functions to dma.c to set address and length for src and dest.

koenkooi · Apr 12, 2011 · 5ae9f37 · 5ae9f37
1 parent 01e460b
commit 5ae9f37
Show file tree

Hide file tree

Showing 2 changed files with 34 additions and 0 deletions.
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
@@ -524,6 +524,21 @@ void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
 }
 EXPORT_SYMBOL(omap_set_dma_src_burst_mode);
 
+void omap_set_dma_src_addr_size(int lch, unsigned int addr, int elem_count)
+{
+
+	if (cpu_class_is_omap1()) {
+		dma_write(addr >> 16, CSSA_U(lch));
+		dma_write((u16)addr, CSSA_L(lch));
+	}
+
+	if (cpu_class_is_omap2())
+		dma_write(addr, CSSA(lch));
+
+	dma_write(elem_count, CEN(lch));
+}
+EXPORT_SYMBOL(omap_set_dma_src_addr_size);
+
 /* Note that dest_port is only for OMAP1 */
 void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
 			      unsigned long dest_start,
@@ -620,6 +635,21 @@ void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
 }
 EXPORT_SYMBOL(omap_set_dma_dest_burst_mode);
 
+void omap_set_dma_dest_addr_size(int lch, unsigned int addr, int elem_count)
+{
+
+	if (cpu_class_is_omap1()) {
+		dma_write(addr >> 16, CDSA_U(lch));
+		dma_write((u16)addr, CDSA_L(lch));
+	}
+
+	if (cpu_class_is_omap2())
+		dma_write(addr, CDSA(lch));
+
+	dma_write(elem_count, CEN(lch));
+}
+EXPORT_SYMBOL(omap_set_dma_dest_addr_size);
+
 static inline void omap_enable_channel_irq(int lch)
 {
 	u32 status;

diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h
@@ -489,6 +489,8 @@ extern void omap_set_dma_src_index(int lch, int eidx, int fidx);
 extern void omap_set_dma_src_data_pack(int lch, int enable);
 extern void omap_set_dma_src_burst_mode(int lch,
 					enum omap_dma_burst_mode burst_mode);
+extern void omap_set_dma_src_addr_size(int lch, unsigned int addr,
+				int elem_count);
 
 extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
 				     unsigned long dest_start,
@@ -497,6 +499,8 @@ extern void omap_set_dma_dest_index(int lch, int eidx, int fidx);
 extern void omap_set_dma_dest_data_pack(int lch, int enable);
 extern void omap_set_dma_dest_burst_mode(int lch,
 					 enum omap_dma_burst_mode burst_mode);
+extern void omap_set_dma_dest_addr_size(int lch, unsigned int addr,
+					int elem_count);
 
 extern void omap_set_dma_params(int lch,
 				struct omap_dma_channel_params *params);