drivers/media/dvb-frontends/stv0297.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     Driver for STV0297 demodulator
   4
   5     Copyright (C) 2003-2004 Dennis Noermann <dennis.noermann@noernet.de>
   6
   7 */
   8
   9 #ifndef STV0297_H
  10 #define STV0297_H
  11
  12 #include <linux/dvb/frontend.h>
  13 #include <media/dvb_frontend.h>
  14
  15 struct stv0297_config
  16 {
  17         /* the demodulator's i2c address */
  18         u8 demod_address;
  19
  20         /* inittab - array of pairs of values.
  21         * First of each pair is the register, second is the value.
  22         * List should be terminated with an 0xff, 0xff pair.
  23         */
  24         u8* inittab;
  25
  26         /* does the "inversion" need inverted? */
  27         u8 invert:1;
  28
  29         /* set to 1 if the device requires an i2c STOP during reading */
  30         u8 stop_during_read:1;
  31 };
  32
  33 #if IS_REACHABLE(CONFIG_DVB_STV0297)
  34 extern struct dvb_frontend* stv0297_attach(const struct stv0297_config* config,
  35                                            struct i2c_adapter* i2c);
  36 #else
  37 static inline struct dvb_frontend* stv0297_attach(const struct stv0297_config* config,
  38                                            struct i2c_adapter* i2c)
  39 {
  40         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  41         return NULL;
  42 }
  43 #endif // CONFIG_DVB_STV0297
  44
  45 #endif // STV0297_H