[PATCH RFT 23/24] ARM: bcm2835: mbox: convert to streaming DMA ops
Lucas Stach
dev at lynxeye.de
Thu Feb 12 13:39:59 PST 2015
Signed-off-by: Lucas Stach <dev at lynxeye.de>
---
arch/arm/mach-bcm2835/mbox.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-bcm2835/mbox.c b/arch/arm/mach-bcm2835/mbox.c
index 1a80771..9d69bc8 100644
--- a/arch/arm/mach-bcm2835/mbox.c
+++ b/arch/arm/mach-bcm2835/mbox.c
@@ -7,9 +7,9 @@
*/
#include <asm/io.h>
-#include <asm/mmu.h>
#include <common.h>
#include <clock.h>
+#include <dma.h>
#include <mach/mbox.h>
@@ -55,7 +55,8 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
/* Send the request */
val = BCM2835_MBOX_PACK(chan, send);
debug("mbox: TX raw: 0x%08x\n", val);
- dma_flush_range(send, send + buffer->buf_size);
+ dma_sync_single_for_device((unsigned long)send, buffer->buf_size,
+ DMA_BIDIRECTIONAL);
writel(val, ®s->write);
/* Wait for the response */
@@ -72,7 +73,8 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
/* Read the response */
val = readl(®s->read);
debug("mbox: RX raw: 0x%08x\n", val);
- dma_inv_range(send, send + buffer->buf_size);
+ dma_sync_single_for_cpu((unsigned long)send, buffer->buf_size,
+ DMA_BIDIRECTIONAL);
/* Validate the response */
if (BCM2835_MBOX_UNPACK_CHAN(val) != chan) {
--
2.1.0
More information about the barebox
mailing list