drivers/media/dvb-frontends/isl6405.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * isl6405.h - driver for dual lnb supply and control ic ISL6405
   4  *
   5  * Copyright (C) 2008 Hartmut Hackmann
   6  * Copyright (C) 2006 Oliver Endriss
   7  *
   8  * the project's page is at https://linuxtv.org
   9  */
  10
  11 #ifndef _ISL6405_H
  12 #define _ISL6405_H
  13
  14 #include <linux/dvb/frontend.h>
  15
  16 /* system register bits */
  17
  18 /* this bit selects register (control) 1 or 2
  19    note that the bit maps are different */
  20
  21 #define ISL6405_SR      0x80
  22
  23 /* SR = 0 */
  24 #define ISL6405_OLF1    0x01
  25 #define ISL6405_EN1     0x02
  26 #define ISL6405_VSEL1   0x04
  27 #define ISL6405_LLC1    0x08
  28 #define ISL6405_ENT1    0x10
  29 #define ISL6405_ISEL1   0x20
  30 #define ISL6405_DCL     0x40
  31
  32 /* SR = 1 */
  33 #define ISL6405_OLF2    0x01
  34 #define ISL6405_OTF     0x02
  35 #define ISL6405_EN2     0x04
  36 #define ISL6405_VSEL2   0x08
  37 #define ISL6405_LLC2    0x10
  38 #define ISL6405_ENT2    0x20
  39 #define ISL6405_ISEL2   0x40
  40
  41 #if IS_REACHABLE(CONFIG_DVB_ISL6405)
  42 /* override_set and override_clear control which system register bits (above)
  43  * to always set & clear
  44  */
  45 extern struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c,
  46                                            u8 i2c_addr, u8 override_set, u8 override_clear);
  47 #else
  48 static inline struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe,
  49                                                   struct i2c_adapter *i2c, u8 i2c_addr,
  50                                                   u8 override_set, u8 override_clear)
  51 {
  52         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  53         return NULL;
  54 }
  55 #endif /* CONFIG_DVB_ISL6405 */
  56
  57 #endif