Merge branch 'topic/snd-hrtimer' into to-push

[linux-2.6-omap-h63xx.git] / drivers / media / video / cx18 / cx18-io.c

diff --git a/drivers/media/video/cx18/cx18-io.c b/drivers/media/video/cx18/cx18-io.c
index 700ab9439c16ad9becc3e5ca502e40b1fd8a2423..220fae8d4ad757a766fc08e6de3a5bf9e892bd03 100644 (file)
--- a/drivers/media/video/cx18/cx18-io.c
+++ b/drivers/media/video/cx18/cx18-io.c
@@ -88,6 +88,19 @@ void cx18_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr)
        cx18_log_write_retries(cx, i, addr);
 }
 
+void _cx18_writel_expect(struct cx18 *cx, u32 val, void __iomem *addr,
+                        u32 eval, u32 mask)
+{
+       int i;
+       eval &= mask;
+       for (i = 0; i < CX18_MAX_MMIO_RETRIES; i++) {
+               cx18_writel_noretry(cx, val, addr);
+               if (eval == (cx18_readl_noretry(cx, addr) & mask))
+                       break;
+       }
+       cx18_log_write_retries(cx, i, addr);
+}
+
 void cx18_writew_retry(struct cx18 *cx, u16 val, void __iomem *addr)
 {
        int i;
@@ -218,7 +231,7 @@ void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count)
 void cx18_sw1_irq_enable(struct cx18 *cx, u32 val)
 {
        u32 r;
-       cx18_write_reg(cx, val, SW1_INT_STATUS);
+       cx18_write_reg_expect(cx, val, SW1_INT_STATUS, ~val, val);
        r = cx18_read_reg(cx, SW1_INT_ENABLE_PCI);
        cx18_write_reg(cx, r | val, SW1_INT_ENABLE_PCI);
 }
@@ -233,7 +246,7 @@ void cx18_sw1_irq_disable(struct cx18 *cx, u32 val)
 void cx18_sw2_irq_enable(struct cx18 *cx, u32 val)
 {
        u32 r;
-       cx18_write_reg(cx, val, SW2_INT_STATUS);
+       cx18_write_reg_expect(cx, val, SW2_INT_STATUS, ~val, val);
        r = cx18_read_reg(cx, SW2_INT_ENABLE_PCI);
        cx18_write_reg(cx, r | val, SW2_INT_ENABLE_PCI);
 }