diff options
Diffstat (limited to 'drivers/media/dvb/dvb-usb/gp8psk-fe.c')
| -rw-r--r-- | drivers/media/dvb/dvb-usb/gp8psk-fe.c | 84 |
1 files changed, 51 insertions, 33 deletions
diff --git a/drivers/media/dvb/dvb-usb/gp8psk-fe.c b/drivers/media/dvb/dvb-usb/gp8psk-fe.c index 6ccbdc9..e37142d 100644 --- a/drivers/media/dvb/dvb-usb/gp8psk-fe.c +++ b/drivers/media/dvb/dvb-usb/gp8psk-fe.c @@ -1,7 +1,8 @@ /* DVB USB compliant Linux driver for the - * - GENPIX 8pks/qpsk USB2.0 DVB-S module + * - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module * - * Copyright (C) 2006 Alan Nisota (alannisota@gmail.com) + * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com) + * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com) * * Thanks to GENPIX for the sample code used to implement this module. * @@ -17,27 +18,39 @@ struct gp8psk_fe_state { struct dvb_frontend fe; - struct dvb_usb_device *d; - + u8 lock; u16 snr; - - unsigned long next_snr_check; + unsigned long next_status_check; + unsigned long status_check_interval; }; +static int gp8psk_fe_update_status(struct gp8psk_fe_state *st) +{ + u8 buf[6]; + if (time_after(jiffies,st->next_status_check)) { + gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0,0,&st->lock,1); + gp8psk_usb_in_op(st->d, GET_SIGNAL_STRENGTH, 0,0,buf,6); + st->snr = (buf[1]) << 8 | buf[0]; + st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000; + } + return 0; +} + static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status) { struct gp8psk_fe_state *st = fe->demodulator_priv; - u8 lock; + gp8psk_fe_update_status(st); - if (gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0, 0, &lock,1)) - return -EINVAL; - - if (lock) + if (st->lock) *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER; else *status = 0; + if (*status & FE_HAS_LOCK) + st->status_check_interval = 1000; + else + st->status_check_interval = 100; return 0; } @@ -60,33 +73,29 @@ static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr) { struct gp8psk_fe_state *st = fe->demodulator_priv; - u8 buf[2]; - - if (time_after(jiffies,st->next_snr_check)) { - gp8psk_usb_in_op(st->d,GET_SIGNAL_STRENGTH,0,0,buf,2); - *snr = (int)(buf[1]) << 8 | buf[0]; - /* snr is reported in dBu*256 */ - /* snr / 38.4 ~= 100% strength */ - /* snr * 17 returns 100% strength as 65535 */ - if (*snr <= 3855) - *snr = (*snr<<4) + *snr; // snr * 17 - else - *snr = 65535; - st->next_snr_check = jiffies + (10*HZ)/1000; - } else { - *snr = st->snr; - } + gp8psk_fe_update_status(st); + /* snr is reported in dBu*256 */ + *snr = st->snr; return 0; } static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) { - return gp8psk_fe_read_snr(fe, strength); + struct gp8psk_fe_state *st = fe->demodulator_priv; + gp8psk_fe_update_status(st); + /* snr is reported in dBu*256 */ + /* snr / 38.4 ~= 100% strength */ + /* snr * 17 returns 100% strength as 65535 */ + if (st->snr > 0xf00) + *strength = 0xffff; + else + *strength = (st->snr << 4) + st->snr; /* snr*17 */ + return 0; } static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) { - tune->min_delay_ms = 800; + tune->min_delay_ms = 200; return 0; } @@ -124,7 +133,9 @@ static int gp8psk_fe_set_frontend(struct dvb_frontend* fe, gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10); - state->next_snr_check = jiffies; + state->lock = 0; + state->next_status_check = jiffies; + state->status_check_interval = 200; return 0; } @@ -190,6 +201,12 @@ static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t volt return 0; } +static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff) +{ + struct gp8psk_fe_state* state = fe->demodulator_priv; + return gp8psk_usb_out_op(state->d, USE_EXTRA_VOLT, onoff, 0,NULL,0); +} + static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd) { struct gp8psk_fe_state* state = fe->demodulator_priv; @@ -235,10 +252,10 @@ success: static struct dvb_frontend_ops gp8psk_fe_ops = { .info = { - .name = "Genpix 8psk-USB DVB-S", + .name = "Genpix 8psk-to-USB2 DVB-S", .type = FE_QPSK, - .frequency_min = 950000, - .frequency_max = 2150000, + .frequency_min = 800000, + .frequency_max = 2250000, .frequency_stepsize = 100, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, @@ -269,4 +286,5 @@ static struct dvb_frontend_ops gp8psk_fe_ops = { .set_tone = gp8psk_fe_set_tone, .set_voltage = gp8psk_fe_set_voltage, .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd, + .enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage }; |