Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-10 07:10:27 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[media] cxd2841er: provide signal strength for DVB-C

Browse Source 
Currently, there's no stats for DVB-C. Let's at least return
signal strength. The scale is different than on DVB-T, so let's
use a relative scale, for now.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-07-01 11:03:14 -03:00
parent 4216be14be
commit 988bd281d3
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/media/dvb-frontends/cxd2841er.c
View File

@ -1750,7 +1750,6 @@ static void cxd2841er_read_signal_strength(struct dvb_frontend *fe)
dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
switch (p->delivery_system) {
case SYS_DVBC_ANNEX_A:
case SYS_DVBC_ANNEX_B:
case SYS_DVBC_ANNEX_C:
strength = 65535 - cxd2841er_read_agc_gain_c(
@ -1766,6 +1765,12 @@ static void cxd2841er_read_signal_strength(struct dvb_frontend *fe)
/* Formula was empirically determinated @ 410 MHz */
p->strength.stat[0].uvalue = ((s32)strength) * 366 / 100 - 89520;
break; /* Code moved out of the function */
case SYS_DVBC_ANNEX_A:
strength = cxd2841er_read_agc_gain_t_t2(priv,
p->delivery_system);
p->strength.stat[0].scale = FE_SCALE_RELATIVE;
p->strength.stat[0].uvalue = strength;
break;
case SYS_ISDBT:
strength = 65535 - cxd2841er_read_agc_gain_i(
priv, p->delivery_system);