diff options
| author | Manu Abraham <manu@linuxtv.org> | 2007-09-27 01:32:13 +0400 |
|---|---|---|
| committer | Manu Abraham <manu@linuxtv.org> | 2007-09-27 01:32:13 +0400 |
| commit | f1ccdcf99d9319cfca38cf3a55e6be98b99d62e9 (patch) | |
| tree | 2068f40e0c2a9f7b9838b5611779f77efb43f67f /linux/drivers/media/dvb/frontends/stb0899_drv.c | |
| parent | dfca2e081a99a1747cf0a80d0671f31701d4f58c (diff) | |
| download | mediapointer-dvb-s2-f1ccdcf99d9319cfca38cf3a55e6be98b99d62e9.tar.gz mediapointer-dvb-s2-f1ccdcf99d9319cfca38cf3a55e6be98b99d62e9.tar.bz2 | |
Optimizations Reduce capture range from 10MHz to 3Mhz
* Reduces szapping time a lot
* increased stability at Low Symbol rates
* overall increases reliability in tuning
From: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Diffstat (limited to 'linux/drivers/media/dvb/frontends/stb0899_drv.c')
| -rw-r--r-- | linux/drivers/media/dvb/frontends/stb0899_drv.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/linux/drivers/media/dvb/frontends/stb0899_drv.c b/linux/drivers/media/dvb/frontends/stb0899_drv.c index 3078c04d9..078678792 100644 --- a/linux/drivers/media/dvb/frontends/stb0899_drv.c +++ b/linux/drivers/media/dvb/frontends/stb0899_drv.c @@ -1557,8 +1557,8 @@ static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvbfe_pa } dprintk(verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys); -// SearchRange = 3000000; /* Search Bandwidth (3 Mhz, was initially 10 Mhz) */ - SearchRange = 10000000; /* Search Bandwidth (3 Mhz, was initially 10 Mhz) */ + SearchRange = 3000000; /* Search Bandwidth (3 Mhz, was initially 10 Mhz) */ +// SearchRange = 10000000; /* Search Bandwidth (3 Mhz, was initially 10 Mhz) */ dprintk(verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate); /* checking Search Range is meaningless for a fixed 3 Mhz */ if (INRANGE(i_params->srate, 1000000, 45000000)) { @@ -1597,7 +1597,7 @@ static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvbfe_pa /* What to do for tuners having no bandwidth setup ? */ if (state->config->tuner_set_bandwidth) - state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + 10000000)) / 10); + state->config->tuner_set_bandwidth(fe, (135 * (stb0899_carr_width(state) + SearchRange)) / 100); if (state->config->tuner_get_bandwidth) state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); /* Set DVB-S1 AGC */ @@ -1629,7 +1629,7 @@ static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvbfe_pa internal->srch_range = SearchRange; if (state->config->tuner_set_bandwidth) - state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + 10000000)); + state->config->tuner_set_bandwidth(fe, (135 * (stb0899_carr_width(state) + SearchRange)) / 100); if (state->config->tuner_get_bandwidth) state->config->tuner_get_bandwidth(fe, &internal->tuner_bw); |