drivers/media/dvb-frontends/ts2020.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3     Montage Technology TS2020 - Silicon Tuner driver
   4     Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
   5
   6     Copyright (C) 2009-2012 TurboSight.com
   7
   8  */
   9
  10 #ifndef TS2020_H
  11 #define TS2020_H
  12
  13 #include <linux/dvb/frontend.h>
  14
  15 struct ts2020_config {
  16         u8 tuner_address;
  17         u32 frequency_div;
  18
  19         /*
  20          * RF loop-through
  21          */
  22         bool loop_through:1;
  23
  24         /*
  25          * clock output
  26          */
  27 #define TS2020_CLK_OUT_DISABLED        0
  28 #define TS2020_CLK_OUT_ENABLED         1
  29 #define TS2020_CLK_OUT_ENABLED_XTALOUT 2
  30         u8 clk_out:2;
  31
  32         /*
  33          * clock output divider
  34          * 1 - 31
  35          */
  36         u8 clk_out_div:5;
  37
  38         /* Set to true to suppress stat polling */
  39         bool dont_poll:1;
  40
  41         /*
  42          * pointer to DVB frontend
  43          */
  44         struct dvb_frontend *fe;
  45
  46         /*
  47          * driver private, do not set value
  48          */
  49         u8 attach_in_use:1;
  50
  51         /* Operation to be called by the ts2020 driver to get the value of the
  52          * AGC PWM tuner input as theoretically output by the demodulator.
  53          */
  54         int (*get_agc_pwm)(struct dvb_frontend *fe, u8 *_agc_pwm);
  55 };
  56
  57 /* Do not add new ts2020_attach() users! Use I2C bindings instead. */
  58 #if IS_REACHABLE(CONFIG_DVB_TS2020)
  59 extern struct dvb_frontend *ts2020_attach(
  60         struct dvb_frontend *fe,
  61         const struct ts2020_config *config,
  62         struct i2c_adapter *i2c);
  63 #else
  64 static inline struct dvb_frontend *ts2020_attach(
  65         struct dvb_frontend *fe,
  66         const struct ts2020_config *config,
  67         struct i2c_adapter *i2c)
  68 {
  69         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  70         return NULL;
  71 }
  72 #endif
  73
  74 #endif /* TS2020_H */