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authorMichael Krufky <mkrufky@kernellabs.com>2009-05-20 16:06:10 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-06-16 18:21:14 -0300
commitb9dcdb6fb870ce83578465b3ffd047185bead67f (patch)
tree54bedd373530cb401ec26adabe98baaf2d4f6c85
parentc27586e4d647c5c07c81e766d34ceef6ba5a316d (diff)
V4L/DVB (11860): saa7134: fix quirk in saa7134_i2c_xfer for the saa7131 bridge
The i2c quirk in the saa7134_i2c_xfer function does a bogus write to i2c address 0xfd, to work around a bug in the silicon that affects read transactions. Unfortunately, this hack is not working properly, since the bogus write is to 0xfd, an invalid i2c address. Fix this quirk by using an actual valid i2c address, 0xfe, which is still unlikely to be used as an i2c address for any actual i2c client. This is required in order to properly communicate with a TDA10048 DVB-T demod located at i2c address 0x10 on the primary i2c bus. Signed-off-by: Michael Krufky <mkrufky@kernellabs.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/video/saa7134/saa7134-i2c.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/saa7134/saa7134-i2c.c b/drivers/media/video/saa7134/saa7134-i2c.c
index a8a355e2879..8096dace5f6 100644
--- a/drivers/media/video/saa7134/saa7134-i2c.c
+++ b/drivers/media/video/saa7134/saa7134-i2c.c
@@ -259,7 +259,7 @@ static int saa7134_i2c_xfer(struct i2c_adapter *i2c_adap,
/* workaround for a saa7134 i2c bug
* needed to talk to the mt352 demux
* thanks to pinnacle for the hint */
- int quirk = 0xfd;
+ int quirk = 0xfe;
d1printk(" [%02x quirk]",quirk);
i2c_send_byte(dev,START,quirk);
i2c_recv_byte(dev);