drivers/media/dvb-frontends/ves1820.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     VES1820  - Single Chip Cable Channel Receiver driver module
   4
   5     Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
   6
   7 */
   8
   9 #ifndef VES1820_H
  10 #define VES1820_H
  11
  12 #include <linux/dvb/frontend.h>
  13
  14 #define VES1820_SELAGC_PWM 0
  15 #define VES1820_SELAGC_SIGNAMPERR 1
  16
  17 struct ves1820_config
  18 {
  19         /* the demodulator's i2c address */
  20         u8 demod_address;
  21
  22         /* value of XIN to use */
  23         u32 xin;
  24
  25         /* does inversion need inverted? */
  26         u8 invert:1;
  27
  28         /* SELAGC control */
  29         u8 selagc:1;
  30 };
  31
  32 #if IS_REACHABLE(CONFIG_DVB_VES1820)
  33 extern struct dvb_frontend* ves1820_attach(const struct ves1820_config* config,
  34                                            struct i2c_adapter* i2c, u8 pwm);
  35 #else
  36 static inline struct dvb_frontend* ves1820_attach(const struct ves1820_config* config,
  37                                            struct i2c_adapter* i2c, u8 pwm)
  38 {
  39         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  40         return NULL;
  41 }
  42 #endif // CONFIG_DVB_VES1820
  43
  44 #endif // VES1820_H