drivers/media/dvb-frontends/lnbp21.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * lnbp21.h - driver for lnb supply and control ic lnbp21
   4  *
   5  * Copyright (C) 2006 Oliver Endriss
   6  *
   7  * the project's page is at https://linuxtv.org
   8  */
   9
  10 #ifndef _LNBP21_H
  11 #define _LNBP21_H
  12
  13 /* system register bits */
  14 /* [RO] 0=OK; 1=over current limit flag */
  15 #define LNBP21_OLF      0x01
  16 /* [RO] 0=OK; 1=over temperature flag (150 C) */
  17 #define LNBP21_OTF      0x02
  18 /* [RW] 0=disable LNB power, enable loopthrough
  19         1=enable LNB power, disable loopthrough */
  20 #define LNBP21_EN       0x04
  21 /* [RW] 0=low voltage (13/14V, vert pol)
  22         1=high voltage (18/19V,horiz pol) */
  23 #define LNBP21_VSEL     0x08
  24 /* [RW] increase LNB voltage by 1V:
  25         0=13/18V; 1=14/19V */
  26 #define LNBP21_LLC      0x10
  27 /* [RW] 0=tone controlled by DSQIN pin
  28         1=tone enable, disable DSQIN */
  29 #define LNBP21_TEN      0x20
  30 /* [RW] current limit select:
  31         0:Iout=500-650mA Isc=300mA
  32         1:Iout=400-550mA Isc=200mA */
  33 #define LNBP21_ISEL     0x40
  34 /* [RW] short-circuit protect:
  35         0=pulsed (dynamic) curr limiting
  36         1=static curr limiting */
  37 #define LNBP21_PCL      0x80
  38
  39 #include <linux/dvb/frontend.h>
  40
  41 #if IS_REACHABLE(CONFIG_DVB_LNBP21)
  42 /* override_set and override_clear control which
  43  system register bits (above) to always set & clear */
  44 extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  45                                 struct i2c_adapter *i2c, u8 override_set,
  46                                 u8 override_clear);
  47 #else
  48 static inline struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  49                                 struct i2c_adapter *i2c, u8 override_set,
  50                                 u8 override_clear)
  51 {
  52         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  53         return NULL;
  54 }
  55 #endif
  56
  57 #endif