LXR linux/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
  30struct 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)
  48extern struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe,
  49        const struct ix2505v_config *config, struct i2c_adapter *i2c);
  50#else
  51static 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 */
  60