diff options
Diffstat (limited to 'drivers/media/dvb-frontends/cx24110.c')
| -rw-r--r-- | drivers/media/dvb-frontends/cx24110.c | 50 |
1 files changed, 24 insertions, 26 deletions
diff --git a/drivers/media/dvb-frontends/cx24110.c b/drivers/media/dvb-frontends/cx24110.c index 95b981cd7115..7b510f2ae20f 100644 --- a/drivers/media/dvb-frontends/cx24110.c +++ b/drivers/media/dvb-frontends/cx24110.c @@ -177,47 +177,45 @@ static int cx24110_set_inversion (struct cx24110_state* state, fe_spectral_inver return 0; } -static int cx24110_set_fec (struct cx24110_state* state, fe_code_rate_t fec) +static int cx24110_set_fec(struct cx24110_state* state, fe_code_rate_t fec) { -/* fixme (low): error handling */ - - static const int rate[]={-1,1,2,3,5,7,-1}; - static const int g1[]={-1,0x01,0x02,0x05,0x15,0x45,-1}; - static const int g2[]={-1,0x01,0x03,0x06,0x1a,0x7a,-1}; + static const int rate[FEC_AUTO] = {-1, 1, 2, 3, 5, 7, -1}; + static const int g1[FEC_AUTO] = {-1, 0x01, 0x02, 0x05, 0x15, 0x45, -1}; + static const int g2[FEC_AUTO] = {-1, 0x01, 0x03, 0x06, 0x1a, 0x7a, -1}; /* Well, the AutoAcq engine of the cx24106 and 24110 automatically searches all enabled viterbi rates, and can handle non-standard rates as well. */ - if (fec>FEC_AUTO) - fec=FEC_AUTO; + if (fec > FEC_AUTO) + fec = FEC_AUTO; - if (fec==FEC_AUTO) { /* (re-)establish AutoAcq behaviour */ - cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)&0xdf); + if (fec == FEC_AUTO) { /* (re-)establish AutoAcq behaviour */ + cx24110_writereg(state, 0x37, cx24110_readreg(state, 0x37) & 0xdf); /* clear AcqVitDis bit */ - cx24110_writereg(state,0x18,0xae); + cx24110_writereg(state, 0x18, 0xae); /* allow all DVB standard code rates */ - cx24110_writereg(state,0x05,(cx24110_readreg(state,0x05)&0xf0)|0x3); + cx24110_writereg(state, 0x05, (cx24110_readreg(state, 0x05) & 0xf0) | 0x3); /* set nominal Viterbi rate 3/4 */ - cx24110_writereg(state,0x22,(cx24110_readreg(state,0x22)&0xf0)|0x3); + cx24110_writereg(state, 0x22, (cx24110_readreg(state, 0x22) & 0xf0) | 0x3); /* set current Viterbi rate 3/4 */ - cx24110_writereg(state,0x1a,0x05); cx24110_writereg(state,0x1b,0x06); + cx24110_writereg(state, 0x1a, 0x05); + cx24110_writereg(state, 0x1b, 0x06); /* set the puncture registers for code rate 3/4 */ return 0; } else { - cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)|0x20); + cx24110_writereg(state, 0x37, cx24110_readreg(state, 0x37) | 0x20); /* set AcqVitDis bit */ - if(rate[fec]>0) { - cx24110_writereg(state,0x05,(cx24110_readreg(state,0x05)&0xf0)|rate[fec]); - /* set nominal Viterbi rate */ - cx24110_writereg(state,0x22,(cx24110_readreg(state,0x22)&0xf0)|rate[fec]); - /* set current Viterbi rate */ - cx24110_writereg(state,0x1a,g1[fec]); - cx24110_writereg(state,0x1b,g2[fec]); - /* not sure if this is the right way: I always used AutoAcq mode */ - } else - return -EOPNOTSUPP; -/* fixme (low): which is the correct return code? */ + if (rate[fec] < 0) + return -EINVAL; + + cx24110_writereg(state, 0x05, (cx24110_readreg(state, 0x05) & 0xf0) | rate[fec]); + /* set nominal Viterbi rate */ + cx24110_writereg(state, 0x22, (cx24110_readreg(state, 0x22) & 0xf0) | rate[fec]); + /* set current Viterbi rate */ + cx24110_writereg(state, 0x1a, g1[fec]); + cx24110_writereg(state, 0x1b, g2[fec]); + /* not sure if this is the right way: I always used AutoAcq mode */ } return 0; } |