spi/omap2_mcspi: disable and enable chan between each SPI transfer

Commit Message

Jason Wang July 3, 2010, 11:21 a.m. UTC

None

Patch

diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index b3a94ca..76bbdeb 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -40,6 +40,8 @@ 
#include <plat/clock.h>
#include <plat/mcspi.h>

+#define VERBOSE
+
#define OMAP2_MCSPI_MAX_FREQ 48000000

/* OMAP2 has 3 SPI controllers, while OMAP3 has 4 */
@@ -482,6 +484,10 @@  omap2_mcspi_txrx_pio(struct spi_device *spi, struct 
spi_transfer *xfer)
tx = xfer->tx_buf;

do {
+#ifdef VERBOSE
+ dev_dbg(&spi->dev, "after do stat reg: %08x\n",
+ __raw_readl(chstat_reg));
+#endif
c -= 1;
if (tx != NULL) {