On 10/30/2012 11:24 AM, Oliver Schinagl wrote:
On 29-10-12 02:09, Antti Palosaari wrote:
su 28.10.2012 22:07 Mauro Carvalho Chehab kirjoitti:
Em Mon, 22 Oct 2012 10:17:26 +0200
Oliver Schinagl <oliver+list@xxxxxxxxxxx> escreveu:
diff --git a/drivers/media/tuners/fc2580.c
b/drivers/media/tuners/fc2580.c
index aff39ae..102d942 100644
I found a fellow Asus U3100+ user (mentioned him before with the
firmware issue) that even when using the latest firmware, still see's
0xff as the chipID.
You missed to add a signed-off-by on your patch.
Maybe it would make sense, in this case, to print some warning message,
as this could be due to a bug either at the hardware or at some place
at the driver, like the gpio config settings for this device.
Anyway, Antti, your call.
I am on holiday now and dont want to look much these things at the
moment.
Having 0x00 or 0xff as chip id is something very very stupid and not
exits
in real world. It is good indicator I2C operation was failing. Check
GPIOs, see windows sniffs, add sleep, test if other I2C reads are working
later, etc. to find out more info and fix it properly. In worst case
it is
possible that I2C reads are not working at all...
This was a random report for someone who I assisted via e-mail to get
the latest git clone from antti's tree. Building, enabling debugging and
getting this information alone took a week. I don't think we have the
possibility to get a dump from anything. The stick has been working fine
from my understanding using the 0xff tunerID. How to handle support for
these 'bugged' tuners, I leave that up to you :)
Honestly I don't want to add hack like that with this little
information. It must be found out if all I2C readings are failing, or
just the first one, or some other condition. Currently there is only two
register reads on that driver. Guess what happens if someone enhances
that driver so that one bit from certain register is changed... Set
register bit 7, current register value is 0x00. Register value will be
0x7ff as read returns always 0xff :-(
AFTER your well deserved holiday. Enjoy and have a great time!
--- a/drivers/media/tuners/fc2580.c
+++ b/drivers/media/tuners/fc2580.c
@@ -497,6 +497,7 @@ struct dvb_frontend *fc2580_attach(struct
dvb_frontend *fe,
switch (chip_id) {
case 0x56:
case 0x5a:
+ case 0xff:
break;
default:
goto err;
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--
Regards,
Mauro
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regards
Antti
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