drivers/media/dvb-frontends/cx24110.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     cx24110 - Single Chip Satellite Channel Receiver driver module
   4
   5     Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de> based on
   6     work
   7     Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
   8
   9
  10 */
  11
  12 #ifndef CX24110_H
  13 #define CX24110_H
  14
  15 #include <linux/dvb/frontend.h>
  16
  17 struct cx24110_config
  18 {
  19         /* the demodulator's i2c address */
  20         u8 demod_address;
  21 };
  22
  23 static inline int cx24110_pll_write(struct dvb_frontend *fe, u32 val)
  24 {
  25         u8 buf[] = {
  26                 (u8)((val >> 24) & 0xff),
  27                 (u8)((val >> 16) & 0xff),
  28                 (u8)((val >> 8) & 0xff)
  29         };
  30
  31         if (fe->ops.write)
  32                 return fe->ops.write(fe, buf, 3);
  33         return 0;
  34 }
  35
  36 #if IS_REACHABLE(CONFIG_DVB_CX24110)
  37 extern struct dvb_frontend* cx24110_attach(const struct cx24110_config* config,
  38                                            struct i2c_adapter* i2c);
  39 #else
  40 static inline struct dvb_frontend* cx24110_attach(const struct cx24110_config* config,
  41                                                   struct i2c_adapter* i2c)
  42 {
  43         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  44         return NULL;
  45 }
  46 #endif // CONFIG_DVB_CX24110
  47
  48 #endif // CX24110_H