From 9a909447d3af6917bf2f7eaae08af0c9e1c3593e Mon Sep 17 00:00:00 2001 From: Hans Werner Date: Wed, 14 Jan 2009 13:17:59 -0300 Subject: 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/lnbp21.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/media/dvb/frontends/lnbp21.h') 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 -- cgit v1.2.3-70-g09d2