aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/blackfin/mach-bf561/coreb.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/blackfin/mach-bf561/coreb.c b/arch/blackfin/mach-bf561/coreb.c
index 5d1d21b4c2a..1b44e9e6dc3 100644
--- a/arch/blackfin/mach-bf561/coreb.c
+++ b/arch/blackfin/mach-bf561/coreb.c
@@ -33,7 +33,9 @@
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/uaccess.h>
+#include <linux/fs.h>
#include <asm/dma.h>
+#include <asm/cacheflush.h>
#define MODULE_VER "v0.1"
@@ -90,11 +92,12 @@ static ssize_t coreb_write(struct file *file, const char *buf, size_t count,
coreb_dma_done = 0;
+ flush_dcache_range((unsigned long)buf, (unsigned long)(buf+len));
/* Source Channel */
set_dma_start_addr(CH_MEM_STREAM2_SRC, (unsigned long)buf);
set_dma_x_count(CH_MEM_STREAM2_SRC, len);
set_dma_x_modify(CH_MEM_STREAM2_SRC, sizeof(char));
- set_dma_config(CH_MEM_STREAM2_SRC, RESTART);
+ set_dma_config(CH_MEM_STREAM2_SRC, 0);
/* Destination Channel */
set_dma_start_addr(CH_MEM_STREAM2_DEST, coreb_base + p);
set_dma_x_count(CH_MEM_STREAM2_DEST, len);
@@ -135,11 +138,12 @@ static ssize_t coreb_read(struct file *file, char *buf, size_t count,
coreb_dma_done = 0;
+ invalidate_dcache_range((unsigned long)buf, (unsigned long)(buf+len));
/* Source Channel */
set_dma_start_addr(CH_MEM_STREAM2_SRC, coreb_base + p);
set_dma_x_count(CH_MEM_STREAM2_SRC, len);
set_dma_x_modify(CH_MEM_STREAM2_SRC, sizeof(char));
- set_dma_config(CH_MEM_STREAM2_SRC, RESTART);
+ set_dma_config(CH_MEM_STREAM2_SRC, 0);
/* Destination Channel */
set_dma_start_addr(CH_MEM_STREAM2_DEST, (unsigned long)buf);
set_dma_x_count(CH_MEM_STREAM2_DEST, len);
@@ -266,7 +270,7 @@ static int coreb_ioctl(struct inode *inode, struct file *file,
coreb_status |= COREB_IS_RUNNING;
bfin_write_SICA_SYSCR(bfin_read_SICA_SYSCR() & ~0x0020);
SSYNC();
- spin_lock_irq(&coreb_lock);
+ spin_unlock_irq(&coreb_lock);
break;
#if defined(CONFIG_BF561_COREB_RESET)
case CMD_COREB_STOP:
@@ -275,7 +279,7 @@ static int coreb_ioctl(struct inode *inode, struct file *file,
bfin_write_SICA_SYSCR(bfin_read_SICA_SYSCR() | 0x0020);
bfin_write_SICB_SYSCR(bfin_read_SICB_SYSCR() | 0x0080);
coreb_status &= ~COREB_IS_RUNNING;
- spin_lock_irq(&coreb_lock);
+ spin_unlock_irq(&coreb_lock);
break;
case CMD_COREB_RESET:
printk(KERN_INFO "Resetting Core B\n");