hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[media] tda827x: improve recection with limit frequencies 

tda827x is currently taking the demod IF frequency into account while
seeking for the proper tuner range. This is wrong, as the demod IF
frequency has nothing to do with the tuner PLL.

Signed-off-by: Jose Alberto Reguero <jareguero@telefonica.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jose Alberto Reguero 2011-07-16 08:38:13 -03:00 committed by Mauro Carvalho Chehab
parent d1520c58eb
commit 2d84ca215f
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/media/common/tuners/tda827x.c
View File

@ -176,7 +176,7 @@ static int tda827xo_set_params(struct dvb_frontend *fe,
if_freq = 5000000;
break;
}
tuner_freq = params->frequency + if_freq;
tuner_freq = params->frequency;
i = 0;
while (tda827x_table[i].lomax < tuner_freq) {
@ -185,6 +185,8 @@ static int tda827xo_set_params(struct dvb_frontend *fe,
i++;
}
tuner_freq += if_freq;
N = ((tuner_freq + 125000) / 250000) << (tda827x_table[i].spd + 2);
buf[0] = 0;
buf[1] = (N>>8) | 0x40;
@ -540,7 +542,7 @@ static int tda827xa_set_params(struct dvb_frontend *fe,
if_freq = 5000000;
break;
}
tuner_freq = params->frequency + if_freq;
tuner_freq = params->frequency;
if (fe->ops.info.type == FE_QAM) {
dprintk("%s select tda827xa_dvbc\n", __func__);
@ -554,6 +556,8 @@ static int tda827xa_set_params(struct dvb_frontend *fe,
i++;
}
tuner_freq += if_freq;
N = ((tuner_freq + 31250) / 62500) << frequency_map[i].spd;
buf[0] = 0; // subaddress
buf[1] = N >> 8;