drivers/media/dvb-frontends/lnbp22.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * lnbp22.h - driver for lnb supply and control ic lnbp22
   4  *
   5  * Copyright (C) 2006 Dominik Kuhlen
   6  * Based on lnbp21.h
   7  *
   8  * the project's page is at https://linuxtv.org
   9  */
  10
  11 #ifndef _LNBP22_H
  12 #define _LNBP22_H
  13
  14 /* Enable */
  15 #define LNBP22_EN         0x10
  16 /* Voltage selection */
  17 #define LNBP22_VSEL     0x02
  18 /* Plus 1 Volt Bit */
  19 #define LNBP22_LLC      0x01
  20
  21 #include <linux/dvb/frontend.h>
  22
  23 #if IS_REACHABLE(CONFIG_DVB_LNBP22)
  24 /*
  25  * override_set and override_clear control which system register bits (above)
  26  * to always set & clear
  27  */
  28 extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  29                                                 struct i2c_adapter *i2c);
  30 #else
  31 static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  32                                                 struct i2c_adapter *i2c)
  33 {
  34         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  35         return NULL;
  36 }
  37 #endif /* CONFIG_DVB_LNBP22 */
  38
  39 #endif /* _LNBP22_H */