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authorDan Williams <dan.j.williams@intel.com>2009-09-09 01:32:24 +0400
committerDan Williams <dan.j.williams@intel.com>2009-09-09 01:32:24 +0400
commita348a7e6fdbcd2d5192a09719a479bb238fde727 (patch)
tree5ff94185f4e5a810777469d7fe7832a8ec2d3430 /arch/arm/plat-omap/mcbsp.c
parent808347f6a31792079e345ec865e9cfcb6e8ae6b2 (diff)
parent28d0325ce6e0a52f53d8af687e6427fee59004d3 (diff)
downloadlinux-a348a7e6fdbcd2d5192a09719a479bb238fde727.tar.xz
Merge commit 'v2.6.31-rc1' into dmaengine
Diffstat (limited to 'arch/arm/plat-omap/mcbsp.c')
-rw-r--r--arch/arm/plat-omap/mcbsp.c30
1 files changed, 24 insertions, 6 deletions
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 28b0a824b8cf..efa0e0111f38 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -91,11 +91,20 @@ static void omap_mcbsp_dump_reg(u8 id)
static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
{
struct omap_mcbsp *mcbsp_tx = dev_id;
+ u16 irqst_spcr2;
- dev_dbg(mcbsp_tx->dev, "TX IRQ callback : 0x%x\n",
- OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2));
+ irqst_spcr2 = OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2);
+ dev_dbg(mcbsp_tx->dev, "TX IRQ callback : 0x%x\n", irqst_spcr2);
- complete(&mcbsp_tx->tx_irq_completion);
+ if (irqst_spcr2 & XSYNC_ERR) {
+ dev_err(mcbsp_tx->dev, "TX Frame Sync Error! : 0x%x\n",
+ irqst_spcr2);
+ /* Writing zero to XSYNC_ERR clears the IRQ */
+ OMAP_MCBSP_WRITE(mcbsp_tx->io_base, SPCR2,
+ irqst_spcr2 & ~(XSYNC_ERR));
+ } else {
+ complete(&mcbsp_tx->tx_irq_completion);
+ }
return IRQ_HANDLED;
}
@@ -103,11 +112,20 @@ static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id)
{
struct omap_mcbsp *mcbsp_rx = dev_id;
+ u16 irqst_spcr1;
- dev_dbg(mcbsp_rx->dev, "RX IRQ callback : 0x%x\n",
- OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR2));
+ irqst_spcr1 = OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR1);
+ dev_dbg(mcbsp_rx->dev, "RX IRQ callback : 0x%x\n", irqst_spcr1);
- complete(&mcbsp_rx->rx_irq_completion);
+ if (irqst_spcr1 & RSYNC_ERR) {
+ dev_err(mcbsp_rx->dev, "RX Frame Sync Error! : 0x%x\n",
+ irqst_spcr1);
+ /* Writing zero to RSYNC_ERR clears the IRQ */
+ OMAP_MCBSP_WRITE(mcbsp_rx->io_base, SPCR1,
+ irqst_spcr1 & ~(RSYNC_ERR));
+ } else {
+ complete(&mcbsp_rx->tx_irq_completion);
+ }
return IRQ_HANDLED;
}