drivers/media/dvb-frontends/ix2505v.h

   1 /**
   2  * Driver for Sharp IX2505V (marked B0017) DVB-S silicon tuner
   3  *
   4  * Copyright (C) 2010 Malcolm Priestley
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License Version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #ifndef DVB_IX2505V_H
  17 #define DVB_IX2505V_H
  18
  19 #include <linux/i2c.h>
  20 #include "dvb_frontend.h"
  21
  22 /**
  23  * Attach a ix2505v tuner to the supplied frontend structure.
  24  *
  25  * @param fe Frontend to attach to.
  26  * @param config ix2505v_config structure
  27  * @return FE pointer on success, NULL on failure.
  28  */
  29
  30 struct ix2505v_config {
  31         u8 tuner_address;
  32
  33         /*Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB */
  34         u8 tuner_gain;
  35
  36         /*Charge pump output +/- 0=120 1=260 2=555 3=1200(default) */
  37         u8 tuner_chargepump;
  38
  39         /* delay after tune */
  40         int min_delay_ms;
  41
  42         /* disables reads*/
  43         u8 tuner_write_only;
  44
  45 };
  46
  47 #if IS_REACHABLE(CONFIG_DVB_IX2505V)
  48 extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
  49         const struct ix2505v_config *config, struct i2c_adapter *i2c);
  50 #else
  51 static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
  52         const struct ix2505v_config *config, struct i2c_adapter *i2c)
  53 {
  54         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  55         return NULL;
  56 }
  57 #endif
  58
  59 #endif /* DVB_IX2505V_H */