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media: stv090x: add physical layer scrambling support

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This commit uses the new property scrambling_sequence_index
to control PLS.
By default we are using the gold sequence 0 and only gold sequences
expected on the new property.

Please note that all services use PLS, just most with the default
sequence 0 and many demods only support gold 0.

Signed-off-by: Athanasios Oikonomou <athoik@gmail.com>
Acked-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Athanasios Oikonomou 2017-12-16 07:23:39 -05:00 committed by Mauro Carvalho Chehab
parent f9d7912619
commit 93314453a9
1 changed files with 16 additions and 0 deletions
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16
drivers/media/dvb-frontends/stv090x.c
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@ -3430,6 +3430,21 @@ err:
return -1;
}
static int stv090x_set_pls(struct stv090x_state *state, u32 pls_code)
{
dprintk(FE_DEBUG, 1, "Set Gold PLS code %d", pls_code);
if (STV090x_WRITE_DEMOD(state, PLROOT0, pls_code & 0xff) < 0)
goto err;
if (STV090x_WRITE_DEMOD(state, PLROOT1, (pls_code >> 8) & 0xff) < 0)
goto err;
if (STV090x_WRITE_DEMOD(state, PLROOT2, 0x04 | (pls_code >> 16)) < 0)
goto err;
return 0;
err:
dprintk(FE_ERROR, 1, "I/O error");
return -1;
}
static int stv090x_set_mis(struct stv090x_state *state, int mis)
{
u32 reg;
@ -3492,6 +3507,7 @@ static enum dvbfe_search stv090x_search(struct dvb_frontend *fe)
state->search_range = 5000000;
}
stv090x_set_pls(state, props->scrambling_sequence_index);
stv090x_set_mis(state, props->stream_id);
if (stv090x_algo(state) == STV090x_RANGEOK) {