diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda18271c2dd.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda18271c2dd.c | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/drivers/media/dvb/frontends/tda18271c2dd.c b/drivers/media/dvb/frontends/tda18271c2dd.c index 1b1bf200c55..ad7c72e8f51 100644 --- a/drivers/media/dvb/frontends/tda18271c2dd.c +++ b/drivers/media/dvb/frontends/tda18271c2dd.c @@ -29,7 +29,6 @@ #include <linux/delay.h> #include <linux/firmware.h> #include <linux/i2c.h> -#include <linux/version.h> #include <asm/div64.h> #include "dvb_frontend.h" @@ -1123,55 +1122,51 @@ static int release(struct dvb_frontend *fe) return 0; } -/* - * As defined on EN 300 429 Annex A and on ITU-T J.83 annex A, the DVB-C - * roll-off factor is 0.15. - * According with the specs, the amount of the needed bandwith is given by: - * Bw = Symbol_rate * (1 + 0.15) - * As such, the maximum symbol rate supported by 6 MHz is - * max_symbol_rate = 6 MHz / 1.15 = 5217391 Bauds - *NOTE: For ITU-T J.83 Annex C, the roll-off factor is 0.13. So: - * max_symbol_rate = 6 MHz / 1.13 = 5309735 Baud - * That means that an adjustment is needed for Japan, - * but, as currently DRX-K is hardcoded to Annex A, let's stick - * with 0.15 roll-off factor. - */ -#define MAX_SYMBOL_RATE_6MHz 5217391 -static int set_params(struct dvb_frontend *fe, - struct dvb_frontend_parameters *params) +static int set_params(struct dvb_frontend *fe) { struct tda_state *state = fe->tuner_priv; int status = 0; int Standard; + u32 bw = fe->dtv_property_cache.bandwidth_hz; + u32 delsys = fe->dtv_property_cache.delivery_system; - state->m_Frequency = params->frequency; + state->m_Frequency = fe->dtv_property_cache.frequency; - if (fe->ops.info.type == FE_OFDM) - switch (params->u.ofdm.bandwidth) { - case BANDWIDTH_6_MHZ: + switch (delsys) { + case SYS_DVBT: + case SYS_DVBT2: + switch (bw) { + case 6000000: Standard = HF_DVBT_6MHZ; break; - case BANDWIDTH_7_MHZ: + case 7000000: Standard = HF_DVBT_7MHZ; break; - default: - case BANDWIDTH_8_MHZ: + case 8000000: Standard = HF_DVBT_8MHZ; break; + default: + return -EINVAL; } - else if (fe->ops.info.type == FE_QAM) { - if (params->u.qam.symbol_rate <= MAX_SYMBOL_RATE_6MHz) + case SYS_DVBC_ANNEX_A: + case SYS_DVBC_ANNEX_C: + if (bw <= 6000000) Standard = HF_DVBC_6MHZ; + else if (bw <= 7000000) + Standard = HF_DVBC_7MHZ; else Standard = HF_DVBC_8MHZ; - } else + break; + default: return -EINVAL; + } do { - status = RFTrackingFiltersCorrection(state, params->frequency); + status = RFTrackingFiltersCorrection(state, state->m_Frequency); if (status < 0) break; - status = ChannelConfiguration(state, params->frequency, Standard); + status = ChannelConfiguration(state, state->m_Frequency, + Standard); if (status < 0) break; |