LXR linux/drivers/media/dvb-frontends/rtl2832.h

   1/*
   2 * Realtek RTL2832 DVB-T demodulator driver
   3 *
   4 * Copyright (C) 2012 Thomas Mair <thomas.mair86@gmail.com>
   5 *
   6 *      This program is free software; you can redistribute it and/or modify
   7 *      it under the terms of the GNU General Public License as published by
   8 *      the Free Software Foundation; either version 2 of the License, or
   9 *      (at your option) any later version.
  10 *
  11 *      This program is distributed in the hope that it will be useful,
  12 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *      GNU General Public License for more details.
  15 *
  16 *      You should have received a copy of the GNU General Public License along
  17 *      with this program; if not, write to the Free Software Foundation, Inc.,
  18 *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 */
  20
  21#ifndef RTL2832_H
  22#define RTL2832_H
  23
  24#include <linux/kconfig.h>
  25#include <linux/dvb/frontend.h>
  26
  27struct rtl2832_config {
  28        /*
  29         * Demodulator I2C address.
  30         */
  31        u8 i2c_addr;
  32
  33        /*
  34         * Xtal frequency.
  35         * Hz
  36         * 4000000, 16000000, 25000000, 28800000
  37         */
  38        u32 xtal;
  39
  40        /*
  41         * IFs for all used modes.
  42         * Hz
  43         * 4570000, 4571429, 36000000, 36125000, 36166667, 44000000
  44         */
  45        u32 if_dvbt;
  46
  47        /*
  48         * tuner
  49         * XXX: This must be keep sync with dvb_usb_rtl28xxu demod driver.
  50         */
  51#define RTL2832_TUNER_TUA9001   0x24
  52#define RTL2832_TUNER_FC0012    0x26
  53#define RTL2832_TUNER_E4000     0x27
  54#define RTL2832_TUNER_FC0013    0x29
  55#define RTL2832_TUNER_R820T     0x2a
  56        u8 tuner;
  57};
  58
  59#if IS_ENABLED(CONFIG_DVB_RTL2832)
  60extern struct dvb_frontend *rtl2832_attach(
  61        const struct rtl2832_config *cfg,
  62        struct i2c_adapter *i2c
  63);
  64#else
  65static inline struct dvb_frontend *rtl2832_attach(
  66        const struct rtl2832_config *config,
  67        struct i2c_adapter *i2c
  68)
  69{
  70        pr_warn("%s: driver disabled by Kconfig\n", __func__);
  71        return NULL;
  72}
  73#endif
  74
  75
  76#endif /* RTL2832_H */
  77