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authorSteven Toth <stoth@hauppauge.com>2007-09-04 21:50:49 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-10-09 22:08:26 -0300
commit2df9a4c2d81ed255c9e027ee5df676a65f4ab578 (patch)
treed282f7a01483ec95be7e18b7bf57b54dbd31f5b8 /drivers
parent86184e06da4b71fc24ae9505ec60ce95c098d0de (diff)
V4L/DVB (6173): cx23885: Minor cleanup and important NMI comment placed in code
I wanted to document the NMI assert issue inside the code, even though it's already documented in the patch history. If/when the next cx23887 revision appears, is may need to be enabled on that also. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/cx23885/cx23885-core.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index fa5f6488b99..13dc7c8642c 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -331,8 +331,8 @@ static int cx23885_risc_decode(u32 risc)
[ RISC_WRITECR >> 28 ] = "writecr",
};
static int incr[16] = {
- [ RISC_WRITE >> 28 ] = 3, // 2
- [ RISC_JUMP >> 28 ] = 3, // 2
+ [ RISC_WRITE >> 28 ] = 3,
+ [ RISC_JUMP >> 28 ] = 3,
[ RISC_SKIP >> 28 ] = 1,
[ RISC_SYNC >> 28 ] = 1,
[ RISC_WRITERM >> 28 ] = 3,
@@ -629,6 +629,10 @@ static int cx23885_pci_quirks(struct cx23885_dev *dev)
{
dprintk(1, "%s()\n", __FUNCTION__);
+ /* The cx23885 bridge has a weird bug which causes NMI to be asserted
+ * when DMA begins if RDR_TLCTL0 bit4 is not cleared. It does not
+ * occur on the cx23887 bridge.
+ */
if(dev->bridge == CX23885_BRIDGE_885)
cx_clear(RDR_TLCTL0, 1 << 4);