[ARM] 4138/1: AACI: multiple channel support for IRQ handling

Add AACI channel support to interrupt handler.
Also, clear underrun interrupt for correct channel.

Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 3 deletions

diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
index 53675cf4de44..b85df793cdce 100644
--- a/sound/arm/aaci.c
+++ b/sound/arm/aaci.c
@@ -164,10 +164,11 @@ static inline void aaci_chan_wait_ready(struct aaci_runtime *aacirun)
 /*
  * Interrupt support.
  */
-static void aaci_fifo_irq(struct aaci *aaci, u32 mask)
+static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
 {
         if (mask & ISR_URINTR) {
-                writel(ICLR_TXUEC1, aaci->base + AACI_INTCLR);
+                dev_dbg(&aaci->dev->dev, "TX underrun on chan %d\n", channel);
+                writel(ICLR_TXUEC1 << channel, aaci->base + AACI_INTCLR);
         }
 
         if (mask & ISR_TXINTR) {
@@ -233,7 +234,7 @@ static irqreturn_t aaci_irq(int irq, void *devid)
                 u32 m = mask;
                 for (i = 0; i < 4; i++, m >>= 7) {
                         if (m & 0x7f) {
-                                aaci_fifo_irq(aaci, m);
+                                aaci_fifo_irq(aaci, i, m);
                         }
                 }
         }