On 12/06/2011 07:48 PM, Manu Abraham wrote:
>> With UCB, what we imply is the uncorrectable blocks in the Outer
>> coding. The CRC encoder/decoder is at the Physical layer, much prior
>> and is completely different from what is expected of UCB.
>>
>> With the stv0900/3, you don't really have a Uncorrectable 's register
>> field, one would need to really calculate that out, rather than
>> reading out CRC errors.
>
> Maybe you can try something like this:
> setup ERRCTRL1 to
>
> Bit7-4:1100 (TS error count, packet error final)
> Bit3:reserved:0
> Bit2-0:000 (reset counter on read) 001 (without reset of counter on read)
>
> and the resultant values can be read from
> ERRCNT10
>
> Note that, you get the resultant values as Packet Errors, rather than
> bit errors, so you might need to multiply that by 8.
>
> I have not tried this out. but you can possibly try it.
Thank you for your tips
I try it using the following code:
static int stv090x_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
struct stv090x_state *state = fe->demodulator_priv;
u32 reg, v;
u32 val_header_err, val_packet_err;
switch (state->delsys) {
case STV090x_DVBS2:
/* Reset the packet Error counter1 */
if (STV090x_WRITE_DEMOD(state, ERRCTRL1, 0xc1) < 0)
goto err;
/* Obtain value */
reg = STV090x_READ_DEMOD(state, ERRCNT10);
v = STV090x_GETFIELD_Px(reg, ERR_CNT10_FIELD);
*ucblocks = (v << 3);<->// value * 2^3
break;
default:
return -EINVAL;
}
return 0;
err:
dprintk(FE_ERROR, 1, "I/O error");
return -1;
}
Unfortunately I always obtain value 0. I was also trying with DVB-S2 channel tunned for the whole night - and morning I still see 0 value.
Is it possible that it is normal when satellite installation is correctly set?
Maybe i need to wait for some difficulties - like snow on dish?
I think we may leave it as it is now if there's no UCB register...
Another thing related with this frontend:
I am not sure but I think that btw I found some c-p mistake. Please correct if I am wrong.
Here's the diff:
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index e448851..dd02f9a 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3531,7 +3531,7 @@ static int stv090x_read_per(struct dvb_frontend *fe, u32 *per)
} else {
/* Counter 2 */
reg = STV090x_READ_DEMOD(state, ERRCNT22);
- h = STV090x_GETFIELD_Px(reg, ERR_CNT2_FIELD);
+ h = STV090x_GETFIELD_Px(reg, ERR_CNT22_FIELD);
reg = STV090x_READ_DEMOD(state, ERRCNT21);
m = STV090x_GETFIELD_Px(reg, ERR_CNT21_FIELD);
regards,
--
Mariusz Białończyk
jabber/e-mail: manio@xxxxxxxxxx
http://manio.skyboo.net
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
