[Blackfin] arch: set_bfin_dma_config shouldnt set SYNC or RESTART by default - add argument or option
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index b544460..fa9debe8 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -339,13 +339,13 @@
unsigned short
set_bfin_dma_config(char direction, char flow_mode,
- char intr_mode, char dma_mode, char width)
+ char intr_mode, char dma_mode, char width, char syncmode)
{
unsigned short config;
config =
((direction << 1) | (width << 2) | (dma_mode << 4) |
- (intr_mode << 6) | (flow_mode << 12) | RESTART);
+ (intr_mode << 6) | (flow_mode << 12) | (syncmode << 5));
return config;
}
EXPORT_SYMBOL(set_bfin_dma_config);
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 6f475b6..ac2a3ef 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -442,7 +442,8 @@
set_bfin_dma_config(DIR_READ, DMA_FLOW_STOP,
INTR_ON_BUF,
DIMENSION_LINEAR,
- DATA_SIZE_8));
+ DATA_SIZE_8,
+ DMA_SYNC_RESTART));
set_dma_start_addr(uart->tx_dma_channel, (unsigned long)(xmit->buf+xmit->tail));
set_dma_x_count(uart->tx_dma_channel, uart->tx_count);
set_dma_x_modify(uart->tx_dma_channel, 1);
@@ -689,7 +690,8 @@
set_dma_config(uart->rx_dma_channel,
set_bfin_dma_config(DIR_WRITE, DMA_FLOW_AUTO,
INTR_ON_ROW, DIMENSION_2D,
- DATA_SIZE_8));
+ DATA_SIZE_8,
+ DMA_SYNC_RESTART));
set_dma_x_count(uart->rx_dma_channel, DMA_RX_XCOUNT);
set_dma_x_modify(uart->rx_dma_channel, 1);
set_dma_y_count(uart->rx_dma_channel, DMA_RX_YCOUNT);
diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 74d11c3..1b7e54de 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -224,7 +224,8 @@
set_dma_config(CH_EPPI0,
set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO,
INTR_DISABLE, DIMENSION_2D,
- DATA_SIZE_32));
+ DATA_SIZE_32,
+ DMA_NOSYNC_KEEP_DMA_BUF));
set_dma_x_count(CH_EPPI0, (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE);
set_dma_x_modify(CH_EPPI0, DMA_BUS_SIZE / 8);
set_dma_y_count(CH_EPPI0, LCD_Y_RES);
diff --git a/include/asm-blackfin/dma.h b/include/asm-blackfin/dma.h
index b469505..5abaa2c 100644
--- a/include/asm-blackfin/dma.h
+++ b/include/asm-blackfin/dma.h
@@ -76,6 +76,9 @@
#define INTR_ON_BUF 2
#define INTR_ON_ROW 3
+#define DMA_NOSYNC_KEEP_DMA_BUF 0
+#define DMA_SYNC_RESTART 1
+
struct dmasg {
unsigned long next_desc_addr;
unsigned long start_addr;
@@ -157,7 +160,8 @@
void set_dma_y_modify(unsigned int channel, short y_modify);
void set_dma_config(unsigned int channel, unsigned short config);
unsigned short set_bfin_dma_config(char direction, char flow_mode,
- char intr_mode, char dma_mode, char width);
+ char intr_mode, char dma_mode, char width,
+ char syncmode);
void set_dma_curr_addr(unsigned int channel, unsigned long addr);
/* get curr status for polling */