LXR linux/drivers/media/dvb-frontends/ts2020.h

   1/*
   2    Montage Technology TS2020 - Silicon Tuner driver
   3    Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
   4
   5    Copyright (C) 2009-2012 TurboSight.com
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22#ifndef TS2020_H
  23#define TS2020_H
  24
  25#include <linux/dvb/frontend.h>
  26
  27struct ts2020_config {
  28        u8 tuner_address;
  29        u32 frequency_div;
  30
  31        /*
  32         * RF loop-through
  33         */
  34        bool loop_through:1;
  35
  36        /*
  37         * clock output
  38         */
  39#define TS2020_CLK_OUT_DISABLED        0
  40#define TS2020_CLK_OUT_ENABLED         1
  41#define TS2020_CLK_OUT_ENABLED_XTALOUT 2
  42        u8 clk_out:2;
  43
  44        /*
  45         * clock output divider
  46         * 1 - 31
  47         */
  48        u8 clk_out_div:5;
  49
  50        /* Set to true to suppress stat polling */
  51        bool dont_poll:1;
  52
  53        /*
  54         * pointer to DVB frontend
  55         */
  56        struct dvb_frontend *fe;
  57
  58        /*
  59         * driver private, do not set value
  60         */
  61        u8 attach_in_use:1;
  62
  63        /* Operation to be called by the ts2020 driver to get the value of the
  64         * AGC PWM tuner input as theoretically output by the demodulator.
  65         */
  66        int (*get_agc_pwm)(struct dvb_frontend *fe, u8 *_agc_pwm);
  67};
  68
  69/* Do not add new ts2020_attach() users! Use I2C bindings instead. */
  70#if IS_REACHABLE(CONFIG_DVB_TS2020)
  71extern struct dvb_frontend *ts2020_attach(
  72        struct dvb_frontend *fe,
  73        const struct ts2020_config *config,
  74        struct i2c_adapter *i2c);
  75#else
  76static inline struct dvb_frontend *ts2020_attach(
  77        struct dvb_frontend *fe,
  78        const struct ts2020_config *config,
  79        struct i2c_adapter *i2c)
  80{
  81        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  82        return NULL;
  83}
  84#endif
  85
  86#endif /* TS2020_H */
  87