diff options
| author | Hans Werner <HWerner4@gmx.de> | 2009-01-14 13:17:59 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 12:42:34 -0300 |
| commit | 9a909447d3af6917bf2f7eaae08af0c9e1c3593e (patch) | |
| tree | be08061ad2b64dadf0fe888569217c6e30dc98ee /drivers/media/dvb/frontends | |
| parent | 784e29d2031b535637f65a8b81fb0871c7c51b3f (diff) | |
V4L/DVB (10392): lnbp21: documentation about the system register
Here is a patch which adds some documentation about meanings of the
the lnbp21 system register bits.
Signed-off-by: Hans Werner <hwerner4@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/frontends')
| -rw-r--r-- | drivers/media/dvb/frontends/lnbp21.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/media/dvb/frontends/lnbp21.h b/drivers/media/dvb/frontends/lnbp21.h index 8fe094bd968..b8745887492 100644 --- a/drivers/media/dvb/frontends/lnbp21.h +++ b/drivers/media/dvb/frontends/lnbp21.h @@ -28,14 +28,14 @@ #define _LNBP21_H /* system register bits */ -#define LNBP21_OLF 0x01 -#define LNBP21_OTF 0x02 -#define LNBP21_EN 0x04 -#define LNBP21_VSEL 0x08 -#define LNBP21_LLC 0x10 -#define LNBP21_TEN 0x20 -#define LNBP21_ISEL 0x40 -#define LNBP21_PCL 0x80 +#define LNBP21_OLF 0x01 /* [R-only] 0=OK; 1=over current limit flag*/ +#define LNBP21_OTF 0x02 /* [R-only] 0=OK; 1=over temperature flag (150degC typ) */ +#define LNBP21_EN 0x04 /* [RW] 0=disable LNB power, enable loopthrough; 1=enable LNB power, disable loopthrough*/ +#define LNBP21_VSEL 0x08 /* [RW] 0=low voltage (13/14V, vert pol); 1=high voltage (18/19V,horiz pol) */ +#define LNBP21_LLC 0x10 /* [RW] increase LNB voltage by 1V: 0=13/18V; 1=14/19V */ +#define LNBP21_TEN 0x20 /* [RW] 0=tone controlled by DSQIN pin; 1=tone enable, disable DSQIN */ +#define LNBP21_ISEL 0x40 /* [RW] current limit select 0:Iout=500-650mA,Isc=300mA ; 1:Iout=400-550mA,Isc=200mA*/ +#define LNBP21_PCL 0x80 /* [RW] short-circuit prot: 0=pulsed (dynamic) curr limiting; 1=static curr limiting*/ #include <linux/dvb/frontend.h> |