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
  27 struct 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)
  71 extern struct dvb_frontend *ts2020_attach(
  72         struct dvb_frontend *fe,
  73         const struct ts2020_config *config,
  74         struct i2c_adapter *i2c);
  75 #else
  76 static 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 */