From: Olivier Grenie Date: Mon, 4 Jul 2011 15:33:54 +0000 (-0300) Subject: [media] DiB8000: improve the tuning and the SNR monitoring X-Git-Tag: firefly_0821_release~3680^2~2904^2~600 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1f6bfcc752445ea03cb63c0c6bf5ee54d0fa73d5;p=firefly-linux-kernel-4.4.55.git [media] DiB8000: improve the tuning and the SNR monitoring This patches improves the tuning of the dib8000 and correct the monitoringr of the SNR.The patch allows to faster detect that there is no ISDB-T channel on the wanted frequency. Signed-off-by: Olivier Grenie Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/frontends/dib8000.c b/drivers/media/dvb/frontends/dib8000.c index fe284d5292f5..96c6a61f5b06 100644 --- a/drivers/media/dvb/frontends/dib8000.c +++ b/drivers/media/dvb/frontends/dib8000.c @@ -2215,7 +2215,7 @@ static int dib8000_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_par ((state->fe[0]->dtv_property_cache.layer[1].segment_count == 0) || ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (2 << 0)) == 0)) && ((state->fe[0]->dtv_property_cache.layer[2].segment_count == 0) || ((state->fe[0]->dtv_property_cache.isdbt_layer_enabled & (3 << 0)) == 0)))) { - int i = 80000; + int i = 100; u8 found = 0; u8 tune_failed = 0; @@ -2243,6 +2243,7 @@ static int dib8000_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_par default: dprintk("unhandled autosearch result"); case 1: + tune_failed |= (1 << index_frontend); dprintk("autosearch failed for the frontend%i", index_frontend); break; } @@ -2401,7 +2402,7 @@ static int dib8000_read_snr(struct dvb_frontend *fe, u16 * snr) for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) snr_master += dib8000_get_snr(state->fe[index_frontend]); - if (snr_master != 0) { + if ((snr_master >> 16) != 0) { snr_master = 10*intlog10(snr_master>>16); *snr = snr_master / ((1 << 24) / 10); }