[v2] OMAP: DMA: Add API for setting channel dest addr

Commit Message

manjugk manjugk March 2, 2010, 1:36 p.m. UTC

None

Patch

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 2ab224c..c73f11a 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -1109,6 +1109,23 @@  dma_addr_t omap_get_dma_dst_pos(int lch)
 }
 EXPORT_SYMBOL(omap_get_dma_dst_pos);
 
+/**
+ * omap_set_dma_dst_pos() - Set DMA channel destination address
+ * @arg1:  lch      DMA logical channel number
+ * @arg2:  value    Value to write into CDAC register
+ *
+ * Writes "value" into the register CPC/CDAC
+ */
+void omap_set_dma_dst_pos(int lch, int value)
+{
+	if (cpu_is_omap15xx())
+		dma_write(value, CPC(lch));
+	else
+		dma_write(value, CDAC(lch));
+
+}
+EXPORT_SYMBOL(omap_set_dma_dst_pos);
+
 int omap_get_dma_active_status(int lch)
 {
 	return (dma_read(CCR(lch)) & OMAP_DMA_CCR_EN) != 0;
diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h
index 02232ca..3b6e43e 100644
--- a/arch/arm/plat-omap/include/plat/dma.h
+++ b/arch/arm/plat-omap/include/plat/dma.h
@@ -509,6 +509,7 @@  extern int omap_set_dma_callback(int lch,
 			void *data);
 extern dma_addr_t omap_get_dma_src_pos(int lch);
 extern dma_addr_t omap_get_dma_dst_pos(int lch);
+extern void omap_set_dma_dst_pos(int lch, int value);
 extern void omap_clear_dma(int lch);
 extern int omap_get_dma_active_status(int lch);
 extern int omap_dma_running(void);