On Sun March 24 2013 18:55:50 Devin Heitmueller wrote:
> On Sun, Mar 24, 2013 at 1:51 PM, Mauro Carvalho Chehab
> <mchehab@xxxxxxxxxx> wrote:
> > drivers/media/dvb-frontends/au8522_decoder.c:static int au8522_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
> > drivers/media/dvb-frontends/au8522_decoder.c-{
> > drivers/media/dvb-frontends/au8522_decoder.c- int val = 0;
> > drivers/media/dvb-frontends/au8522_decoder.c- struct au8522_state *state = to_state(sd);
> > drivers/media/dvb-frontends/au8522_decoder.c- u8 lock_status;
> > drivers/media/dvb-frontends/au8522_decoder.c-
> > drivers/media/dvb-frontends/au8522_decoder.c- /* Interrogate the decoder to see if we are getting a real signal */
> > drivers/media/dvb-frontends/au8522_decoder.c- lock_status = au8522_readreg(state, 0x00);
> > drivers/media/dvb-frontends/au8522_decoder.c- if (lock_status == 0xa2)
> > drivers/media/dvb-frontends/au8522_decoder.c- vt->signal = 0xffff;
> > drivers/media/dvb-frontends/au8522_decoder.c- else
> > drivers/media/dvb-frontends/au8522_decoder.c- vt->signal = 0x00;
> > drivers/media/dvb-frontends/au8522_decoder.c-
> > drivers/media/dvb-frontends/au8522_decoder.c- vt->capability |=
> > drivers/media/dvb-frontends/au8522_decoder.c- V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
> > drivers/media/dvb-frontends/au8522_decoder.c- V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
> > drivers/media/dvb-frontends/au8522_decoder.c-
> > drivers/media/dvb-frontends/au8522_decoder.c- val = V4L2_TUNER_SUB_MONO;
> > drivers/media/dvb-frontends/au8522_decoder.c- vt->rxsubchans = val;
> > drivers/media/dvb-frontends/au8522_decoder.c- vt->audmode = V4L2_TUNER_MODE_STEREO;
> > drivers/media/dvb-frontends/au8522_decoder.c- return 0;
> >
> > As if the i2c gate is on a wrong state, au8522_readreg() won't
> > work anymore.
>
> Note that au8522_g_tuner function never actually talks to the tuner.
> It's handled entirely within the au8522 driver, which is not behind
> the gate. The I2C gate is only required if talking to the xc5000, not
> the au8522.
>
> There's something else broken here. I suspect it's probably some
> artifact of the conversion to the new control framework (if I had to
> guess).
Rather than guessing I'll be doing some testing this week. It could also be
a crappy antenna connection as that's been giving me some grief lately (due
to an unholy BNC-to-F-connector-to-coax adapter chain).
Regards,
Hans
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