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  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #ifndef DVB_IX2505V_H
  21 #define DVB_IX2505V_H
  22
  23 #include <linux/i2c.h>
  24 #include "dvb_frontend.h"
  25
  26 /**
  27  * Attach a ix2505v tuner to the supplied frontend structure.
  28  *
  29  * @param fe Frontend to attach to.
  30  * @param config ix2505v_config structure
  31  * @return FE pointer on success, NULL on failure.
  32  */
  33
  34 struct ix2505v_config {
  35         u8 tuner_address;
  36
  37         /*Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB */
  38         u8 tuner_gain;
  39
  40         /*Charge pump output +/- 0=120 1=260 2=555 3=1200(default) */
  41         u8 tuner_chargepump;
  42
  43         /* delay after tune */
  44         int min_delay_ms;
  45
  46         /* disables reads*/
  47         u8 tuner_write_only;
  48
  49 };
  50
  51 #if IS_REACHABLE(CONFIG_DVB_IX2505V)
  52 extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
  53         const struct ix2505v_config *config, struct i2c_adapter *i2c);
  54 #else
  55 static inline struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
  56         const struct ix2505v_config *config, struct i2c_adapter *i2c)
  57 {
  58         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  59         return NULL;
  60 }
  61 #endif
  62
  63 #endif /* DVB_IX2505V_H */