drivers/media/dvb-frontends/isl6405.h

   1 /*
   2  * isl6405.h - driver for dual lnb supply and control ic ISL6405
   3  *
   4  * Copyright (C) 2008 Hartmut Hackmann
   5  * Copyright (C) 2006 Oliver Endriss
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * To obtain the license, point your browser to
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  *
  22  * the project's page is at https://linuxtv.org
  23  */
  24
  25 #ifndef _ISL6405_H
  26 #define _ISL6405_H
  27
  28 #include <linux/dvb/frontend.h>
  29
  30 /* system register bits */
  31
  32 /* this bit selects register (control) 1 or 2
  33    note that the bit maps are different */
  34
  35 #define ISL6405_SR      0x80
  36
  37 /* SR = 0 */
  38 #define ISL6405_OLF1    0x01
  39 #define ISL6405_EN1     0x02
  40 #define ISL6405_VSEL1   0x04
  41 #define ISL6405_LLC1    0x08
  42 #define ISL6405_ENT1    0x10
  43 #define ISL6405_ISEL1   0x20
  44 #define ISL6405_DCL     0x40
  45
  46 /* SR = 1 */
  47 #define ISL6405_OLF2    0x01
  48 #define ISL6405_OTF     0x02
  49 #define ISL6405_EN2     0x04
  50 #define ISL6405_VSEL2   0x08
  51 #define ISL6405_LLC2    0x10
  52 #define ISL6405_ENT2    0x20
  53 #define ISL6405_ISEL2   0x40
  54
  55 #if IS_REACHABLE(CONFIG_DVB_ISL6405)
  56 /* override_set and override_clear control which system register bits (above)
  57  * to always set & clear
  58  */
  59 extern struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c,
  60                                            u8 i2c_addr, u8 override_set, u8 override_clear);
  61 #else
  62 static inline struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe,
  63                                                   struct i2c_adapter *i2c, u8 i2c_addr,
  64                                                   u8 override_set, u8 override_clear)
  65 {
  66         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  67         return NULL;
  68 }
  69 #endif /* CONFIG_DVB_ISL6405 */
  70
  71 #endif