[media] bttv: there may be multiple tvaudio/tda7432 devices
Probe for additional tvaudio devices, and allow tvaudio+tda7432 to
co-exist. My STB TV PCI FM bttv card has a tda7432, a tda9850 and a
tea6420 and with this patch it finally works again (probably for the
first time in many years).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/pci/bt8xx/bttv-cards.c b/drivers/media/pci/bt8xx/bttv-cards.c
index 682ed89..fa0faaa 100644
--- a/drivers/media/pci/bt8xx/bttv-cards.c
+++ b/drivers/media/pci/bt8xx/bttv-cards.c
@@ -3547,6 +3547,16 @@
if (btv->sd_msp34xx)
return;
+ /* Now see if we can find one of the tvaudio devices. */
+ btv->sd_tvaudio = v4l2_i2c_new_subdev(&btv->c.v4l2_dev,
+ &btv->c.i2c_adap, "tvaudio", 0, tvaudio_addrs());
+ if (btv->sd_tvaudio) {
+ /* There may be two tvaudio chips on the card, so try to
+ find another. */
+ v4l2_i2c_new_subdev(&btv->c.v4l2_dev,
+ &btv->c.i2c_adap, "tvaudio", 0, tvaudio_addrs());
+ }
+
/* it might also be a tda7432. */
if (!bttv_tvcards[btv->c.type].no_tda7432) {
static const unsigned short addrs[] = {
@@ -3559,10 +3569,6 @@
if (btv->sd_tda7432)
return;
}
-
- /* Now see if we can find one of the tvaudio devices. */
- btv->sd_tvaudio = v4l2_i2c_new_subdev(&btv->c.v4l2_dev,
- &btv->c.i2c_adap, "tvaudio", 0, tvaudio_addrs());
if (btv->sd_tvaudio)
return;