drivers/media/dvb-frontends/atbm8830.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *    Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator
   4  *    ATBM8830, ATBM8831
   5  *
   6  *    Copyright (C) 2009 David T.L. Wong <davidtlwong@gmail.com>
   7  */
   8
   9 #ifndef __ATBM8830_H__
  10 #define __ATBM8830_H__
  11
  12 #include <linux/dvb/frontend.h>
  13 #include <linux/i2c.h>
  14
  15 #define ATBM8830_PROD_8830 0
  16 #define ATBM8830_PROD_8831 1
  17
  18 struct atbm8830_config {
  19
  20         /* product type */
  21         u8 prod;
  22
  23         /* the demodulator's i2c address */
  24         u8 demod_address;
  25
  26         /* parallel or serial transport stream */
  27         u8 serial_ts;
  28
  29         /* transport stream clock output only when receiving valid stream */
  30         u8 ts_clk_gated;
  31
  32         /* Decoder sample TS data at rising edge of clock */
  33         u8 ts_sampling_edge;
  34
  35         /* Oscillator clock frequency */
  36         u32 osc_clk_freq; /* in kHz */
  37
  38         /* IF frequency */
  39         u32 if_freq; /* in kHz */
  40
  41         /* Swap I/Q for zero IF */
  42         u8 zif_swap_iq;
  43
  44         /* Tuner AGC settings */
  45         u8 agc_min;
  46         u8 agc_max;
  47         u8 agc_hold_loop;
  48 };
  49
  50 #if IS_REACHABLE(CONFIG_DVB_ATBM8830)
  51 extern struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
  52                 struct i2c_adapter *i2c);
  53 #else
  54 static inline
  55 struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
  56                 struct i2c_adapter *i2c) {
  57         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  58         return NULL;
  59 }
  60 #endif /* CONFIG_DVB_ATBM8830 */
  61
  62 #endif /* __ATBM8830_H__ */