diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/frontends/nxt6000.c | 44 | ||||
| -rw-r--r-- | drivers/media/dvb/frontends/nxt6000_priv.h | 21 |
2 files changed, 64 insertions, 1 deletions
diff --git a/drivers/media/dvb/frontends/nxt6000.c b/drivers/media/dvb/frontends/nxt6000.c index a41f7da8b84..f79a69d0eb0 100644 --- a/drivers/media/dvb/frontends/nxt6000.c +++ b/drivers/media/dvb/frontends/nxt6000.c @@ -180,7 +180,12 @@ static void nxt6000_setup(struct dvb_frontend* fe) nxt6000_writereg(state, RS_COR_SYNC_PARAM, SYNC_PARAM); nxt6000_writereg(state, BER_CTRL, /*(1 << 2) | */ (0x01 << 1) | 0x01); - nxt6000_writereg(state, VIT_COR_CTL, VIT_COR_RESYNC); + nxt6000_writereg(state, VIT_BERTIME_2, 0x00); // BER Timer = 0x000200 * 256 = 131072 bits + nxt6000_writereg(state, VIT_BERTIME_1, 0x02); // + nxt6000_writereg(state, VIT_BERTIME_0, 0x00); // + nxt6000_writereg(state, VIT_COR_INTEN, 0x98); // Enable BER interrupts + nxt6000_writereg(state, VIT_COR_CTL, 0x82); // Enable BER measurement + nxt6000_writereg(state, VIT_COR_CTL, VIT_COR_RESYNC | 0x02 ); nxt6000_writereg(state, OFDM_COR_CTL, (0x01 << 5) | (nxt6000_readreg(state, OFDM_COR_CTL) & 0x0F)); nxt6000_writereg(state, OFDM_COR_MODEGUARD, FORCEMODE8K | 0x02); nxt6000_writereg(state, OFDM_AGC_CTL, AGCLAST | INITIAL_AGC_BW); @@ -486,6 +491,40 @@ static void nxt6000_release(struct dvb_frontend* fe) kfree(state); } +static int nxt6000_read_snr(struct dvb_frontend* fe, u16* snr) +{ + struct nxt6000_state* state = (struct nxt6000_state*) fe->demodulator_priv; + + *snr = nxt6000_readreg( state, OFDM_CHC_SNR) / 8; + + return 0; +} + +static int nxt6000_read_ber(struct dvb_frontend* fe, u32* ber) +{ + struct nxt6000_state* state = (struct nxt6000_state*) fe->demodulator_priv; + + nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18 ); + + *ber = (nxt6000_readreg( state, VIT_BER_1 ) << 8 ) | + nxt6000_readreg( state, VIT_BER_0 ); + + nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18); // Clear BER Done interrupts + + return 0; +} + +static int nxt6000_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) +{ + struct nxt6000_state* state = (struct nxt6000_state*) fe->demodulator_priv; + + *signal_strength = (short) (511 - + (nxt6000_readreg(state, AGC_GAIN_1) + + ((nxt6000_readreg(state, AGC_GAIN_2) & 0x03) << 8))); + + return 0; +} + static struct dvb_frontend_ops nxt6000_ops; struct dvb_frontend* nxt6000_attach(const struct nxt6000_config* config, @@ -542,6 +581,9 @@ static struct dvb_frontend_ops nxt6000_ops = { .set_frontend = nxt6000_set_frontend, .read_status = nxt6000_read_status, + .read_ber = nxt6000_read_ber, + .read_signal_strength = nxt6000_read_signal_strength, + .read_snr = nxt6000_read_snr, }; module_param(debug, int, 0644); diff --git a/drivers/media/dvb/frontends/nxt6000_priv.h b/drivers/media/dvb/frontends/nxt6000_priv.h index 64b1a89b2a2..0422e580038 100644 --- a/drivers/media/dvb/frontends/nxt6000_priv.h +++ b/drivers/media/dvb/frontends/nxt6000_priv.h @@ -65,12 +65,27 @@ #define BER_DONE (0x08) #define BER_OVERFLOW (0x10) +/* 0x38 VIT_BERTIME_2 */ +#define VIT_BERTIME_2 (0x38) + +/* 0x39 VIT_BERTIME_1 */ +#define VIT_BERTIME_1 (0x39) + +/* 0x3A VIT_BERTIME_0 */ +#define VIT_BERTIME_0 (0x3a) + /* 0x38 OFDM_BERTimer *//* Use the alias registers */ #define A_VIT_BER_TIMER_0 (0x1D) /* 0x3A VIT_BER_TIMER_0 *//* Use the alias registers */ #define A_VIT_BER_0 (0x1B) +/* 0x3B VIT_BER_1 */ +#define VIT_BER_1 (0x3b) + +/* 0x3C VIT_BER_0 */ +#define VIT_BER_0 (0x3c) + /* 0x40 OFDM_COR_CTL */ #define OFDM_COR_CTL (0x40) #define COREACT (0x20) @@ -117,6 +132,12 @@ #define OFDM_ITB_CTL (0x4B) #define ITBINV (0x01) +/* 0x49 AGC_GAIN_1 */ +#define AGC_GAIN_1 (0x49) + +/* 0x4A AGC_GAIN_2 */ +#define AGC_GAIN_2 (0x4A) + /* 0x4C OFDM_ITB_FREQ_1 */ #define OFDM_ITB_FREQ_1 (0x4C) |