drivers/media/dvb-frontends/mb86a20s.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *   Fujitsu mb86a20s driver
   4  *
   5  *   Copyright (C) 2010 Mauro Carvalho Chehab
   6  */
   7
   8 #ifndef MB86A20S_H
   9 #define MB86A20S_H
  10
  11 #include <linux/dvb/frontend.h>
  12
  13 /**
  14  * struct mb86a20s_config - Define the per-device attributes of the frontend
  15  *
  16  * @fclk:               Clock frequency. If zero, assumes the default
  17  *                      (32.57142 Mhz)
  18  * @demod_address:      the demodulator's i2c address
  19  * @is_serial:          if true, TS is serial. Otherwise, TS is parallel
  20  */
  21 struct mb86a20s_config {
  22         u32     fclk;
  23         u8      demod_address;
  24         bool    is_serial;
  25 };
  26
  27 #if IS_REACHABLE(CONFIG_DVB_MB86A20S)
  28 /**
  29  * Attach a mb86a20s demod
  30  *
  31  * @config: pointer to &struct mb86a20s_config with demod configuration.
  32  * @i2c: i2c adapter to use.
  33  *
  34  * return: FE pointer on success, NULL on failure.
  35  */
  36 extern struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
  37                                            struct i2c_adapter *i2c);
  38
  39 #else
  40 static inline struct dvb_frontend *mb86a20s_attach(
  41         const struct mb86a20s_config *config, struct i2c_adapter *i2c)
  42 {
  43         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  44         return NULL;
  45 }
  46 #endif
  47
  48 #endif /* MB86A20S */