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/kconfig.h>
  26 #include <linux/dvb/frontend.h>
  27
  28 struct ts2020_config {
  29         u8 tuner_address;
  30         u32 frequency_div;
  31
  32         /*
  33          * RF loop-through
  34          */
  35         bool loop_through:1;
  36
  37         /*
  38          * clock output
  39          */
  40 #define TS2020_CLK_OUT_DISABLED        0
  41 #define TS2020_CLK_OUT_ENABLED         1
  42 #define TS2020_CLK_OUT_ENABLED_XTALOUT 2
  43         u8 clk_out:2;
  44
  45         /*
  46          * clock output divider
  47          * 1 - 31
  48          */
  49         u8 clk_out_div:5;
  50
  51         /* Set to true to suppress stat polling */
  52         bool dont_poll:1;
  53
  54         /*
  55          * pointer to DVB frontend
  56          */
  57         struct dvb_frontend *fe;
  58
  59         /*
  60          * driver private, do not set value
  61          */
  62         u8 attach_in_use:1;
  63
  64         /* Operation to be called by the ts2020 driver to get the value of the
  65          * AGC PWM tuner input as theoretically output by the demodulator.
  66          */
  67         int (*get_agc_pwm)(struct dvb_frontend *fe, u8 *_agc_pwm);
  68 };
  69
  70 /* Do not add new ts2020_attach() users! Use I2C bindings instead. */
  71 #if IS_REACHABLE(CONFIG_DVB_TS2020)
  72 extern struct dvb_frontend *ts2020_attach(
  73         struct dvb_frontend *fe,
  74         const struct ts2020_config *config,
  75         struct i2c_adapter *i2c);
  76 #else
  77 static inline struct dvb_frontend *ts2020_attach(
  78         struct dvb_frontend *fe,
  79         const struct ts2020_config *config,
  80         struct i2c_adapter *i2c)
  81 {
  82         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  83         return NULL;
  84 }
  85 #endif
  86
  87 #endif /* TS2020_H */