drivers/media/dvb-frontends/ves1x93.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     Driver for VES1893 and VES1993 QPSK Demodulators
   4
   5     Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
   6     Copyright (C) 2001 Ronny Strutz <3des@elitedvb.de>
   7     Copyright (C) 2002 Dennis Noermann <dennis.noermann@noernet.de>
   8     Copyright (C) 2002-2003 Andreas Oberritter <obi@linuxtv.org>
   9
  10
  11 */
  12
  13 #ifndef VES1X93_H
  14 #define VES1X93_H
  15
  16 #include <linux/dvb/frontend.h>
  17
  18 struct ves1x93_config
  19 {
  20         /* the demodulator's i2c address */
  21         u8 demod_address;
  22
  23         /* value of XIN to use */
  24         u32 xin;
  25
  26         /* should PWM be inverted? */
  27         u8 invert_pwm:1;
  28 };
  29
  30 #if IS_REACHABLE(CONFIG_DVB_VES1X93)
  31 extern struct dvb_frontend* ves1x93_attach(const struct ves1x93_config* config,
  32                                            struct i2c_adapter* i2c);
  33 #else
  34 static inline struct dvb_frontend* ves1x93_attach(const struct ves1x93_config* config,
  35                                            struct i2c_adapter* i2c)
  36 {
  37         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  38         return NULL;
  39 }
  40 #endif // CONFIG_DVB_VES1X93
  41
  42 #endif // VES1X93_H