Signed-off-by: Vignesh R <vigne...@ti.com>
---
arch/arm/include/asm/ti-common/ti-edma3.h | 2 +
drivers/dma/ti-edma3.c | 78 +++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+)
diff --git a/arch/arm/include/asm/ti-common/ti-edma3.h
b/arch/arm/include/asm/ti-common/ti-edma3.h
index 5adc1dac0e65..6a7a321c1bdf 100644
--- a/arch/arm/include/asm/ti-common/ti-edma3.h
+++ b/arch/arm/include/asm/ti-common/ti-edma3.h
@@ -117,5 +117,7 @@ void edma3_set_src_addr(u32 base, int slot, u32 src);
void edma3_set_transfer_params(u32 base, int slot, int acnt,
int bcnt, int ccnt, u16 bcnt_rld,
enum edma3_sync_dimension sync_mode);
+void edma3_transfer(unsigned long edma3_base_addr, unsigned int
+ edma_slot_num, void *dst, void *src, size_t len);
#endif
diff --git a/drivers/dma/ti-edma3.c b/drivers/dma/ti-edma3.c
index 8184ded9fa81..d6a427f2e21d 100644
--- a/drivers/dma/ti-edma3.c
+++ b/drivers/dma/ti-edma3.c
@@ -382,3 +382,81 @@ void qedma3_stop(u32 base, struct edma3_channel_config
*cfg)
/* Clear the channel map */
__raw_writel(0, base + EDMA3_QCHMAP(cfg->chnum));
}
+
+void edma3_transfer(unsigned long edma3_base_addr, unsigned int
+ edma_slot_num, void *dst, void *src, size_t len)
+{
+ struct edma3_slot_config slot;
+ struct edma3_channel_config edma_channel;
+ int b_cnt_value = 1;
+ int rem_bytes = 0;
+ int a_cnt_value = len;
+ unsigned int addr = (unsigned int) (dst);
+ unsigned int max_acnt = 0x7FFFU;
+
+ if (len > max_acnt) {
+ b_cnt_value = (len / max_acnt);
+ rem_bytes = (len % max_acnt);
+ a_cnt_value = max_acnt;
+ }
+
+ slot.opt = 0;
+ slot.src = ((unsigned int) src);
+ slot.acnt = a_cnt_value;
+ slot.bcnt = b_cnt_value;
+ slot.ccnt = 1;
+ slot.src_bidx = a_cnt_value;
+ slot.dst_bidx = a_cnt_value;
+ slot.src_cidx = 0;
+ slot.dst_cidx = 0;
+ slot.link = EDMA3_PARSET_NULL_LINK;
+ slot.bcntrld = 0;
+ slot.opt = EDMA3_SLOPT_TRANS_COMP_INT_ENB |
+ EDMA3_SLOPT_COMP_CODE(0) |
+ EDMA3_SLOPT_STATIC | EDMA3_SLOPT_AB_SYNC;
+
+ edma3_slot_configure(edma3_base_addr, edma_slot_num, &slot);
+ edma_channel.slot = edma_slot_num;
+ edma_channel.chnum = 0;
+ edma_channel.complete_code = 0;
+ /* set event trigger to dst update */
+ edma_channel.trigger_slot_word = EDMA3_TWORD(dst);
+
+ qedma3_start(edma3_base_addr, &edma_channel);
+ edma3_set_dest_addr(edma3_base_addr, edma_channel.slot, addr);
+
+ while (edma3_check_for_transfer(edma3_base_addr, &edma_channel))
+ ;
+ qedma3_stop(edma3_base_addr, &edma_channel);
+
+ if (rem_bytes != 0) {
+ slot.opt = 0;
+ slot.src =
+ (b_cnt_value * max_acnt) + ((unsigned int) src);
+ slot.acnt = rem_bytes;
+ slot.bcnt = 1;
+ slot.ccnt = 1;
+ slot.src_bidx = rem_bytes;
+ slot.dst_bidx = rem_bytes;
+ slot.src_cidx = 0;
+ slot.dst_cidx = 0;
+ slot.link = EDMA3_PARSET_NULL_LINK;
+ slot.bcntrld = 0;
+ slot.opt = EDMA3_SLOPT_TRANS_COMP_INT_ENB |
+ EDMA3_SLOPT_COMP_CODE(0) |
+ EDMA3_SLOPT_STATIC | EDMA3_SLOPT_AB_SYNC;
+ edma3_slot_configure(edma3_base_addr, edma_slot_num, &slot);
+ edma_channel.slot = edma_slot_num;
+ edma_channel.chnum = 0;
+ edma_channel.complete_code = 0;
+ /* set event trigger to dst update */
+ edma_channel.trigger_slot_word = EDMA3_TWORD(dst);
+
+ qedma3_start(edma3_base_addr, &edma_channel);
+ edma3_set_dest_addr(edma3_base_addr, edma_channel.slot, addr +
+ (max_acnt * b_cnt_value));
+ while (edma3_check_for_transfer(edma3_base_addr, &edma_channel))
+ ;
+ qedma3_stop(edma3_base_addr, &edma_channel);
+ }
+}
--
2.5.0
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
