From 1f6bfcc752445ea03cb63c0c6bf5ee54d0fa73d5 Mon Sep 17 00:00:00 2001 From: Olivier Grenie Date: Mon, 4 Jul 2011 12:33:54 -0300 Subject: [PATCH] [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 --- drivers/media/dvb/frontends/dib8000.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) 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); } -- 2.20.1