tda18271.h

Go to the documentation of this file.

/*
    tda18271.h - header for the Philips / NXP TDA18271 silicon tuner

    Copyright (C) 2007, 2008 Michael Krufky <[email protected]>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __TDA18271_H__
#define __TDA18271_H__

#include <linux/i2c.h>
#include "dvb_frontend.h"

struct tda18271_std_map_item {
    u16 if_freq;

    /* EP3[4:3] */
    unsigned int agc_mode:2;
    /* EP3[2:0] */
    unsigned int std:3;
    /* EP4[7] */
    unsigned int fm_rfn:1;
    /* EP4[4:2] */
    unsigned int if_lvl:3;
    /* EB22[6:0] */
    unsigned int rfagc_top:7;
};

struct tda18271_std_map {
    struct tda18271_std_map_item fm_radio;
    struct tda18271_std_map_item atv_b;
    struct tda18271_std_map_item atv_dk;
    struct tda18271_std_map_item atv_gh;
    struct tda18271_std_map_item atv_i;
    struct tda18271_std_map_item atv_l;
    struct tda18271_std_map_item atv_lc;
    struct tda18271_std_map_item atv_mn;
    struct tda18271_std_map_item atsc_6;
    struct tda18271_std_map_item dvbt_6;
    struct tda18271_std_map_item dvbt_7;
    struct tda18271_std_map_item dvbt_8;
    struct tda18271_std_map_item qam_6;
    struct tda18271_std_map_item qam_7;
    struct tda18271_std_map_item qam_8;
};

enum tda18271_role {
    TDA18271_MASTER = 0,
    TDA18271_SLAVE,
};

enum tda18271_i2c_gate {
    TDA18271_GATE_AUTO = 0,
    TDA18271_GATE_ANALOG,
    TDA18271_GATE_DIGITAL,
};

enum tda18271_output_options {
    /* slave tuner output & loop thru & xtal oscillator always on */
    TDA18271_OUTPUT_LT_XT_ON = 0,

    /* slave tuner output loop thru off */
    TDA18271_OUTPUT_LT_OFF = 1,

    /* xtal oscillator off */
    TDA18271_OUTPUT_XT_OFF = 2,
};

enum tda18271_small_i2c {
    TDA18271_39_BYTE_CHUNK_INIT = 0,
    TDA18271_16_BYTE_CHUNK_INIT = 16,
    TDA18271_08_BYTE_CHUNK_INIT = 8,
    TDA18271_03_BYTE_CHUNK_INIT = 3,
};

struct tda18271_config {
    /* override default if freq / std settings (optional) */
    struct tda18271_std_map *std_map;

    /* master / slave tuner: master uses main pll, slave uses cal pll */
    enum tda18271_role role;

    /* use i2c gate provided by analog or digital demod */
    enum tda18271_i2c_gate gate;

    /* output options that can be disabled */
    enum tda18271_output_options output_opt;

    /* some i2c providers can't write all 39 registers at once */
    enum tda18271_small_i2c small_i2c;

    /* force rf tracking filter calibration on startup */
    unsigned int rf_cal_on_startup:1;

    /* prevent any register access during attach(),
     * delaying both IR & RF calibration until init()
     * module option 'cal' overrides this delay */
    unsigned int delay_cal:1;

    /* interface to saa713x / tda829x */
    unsigned int config;
};

#define TDA18271_CALLBACK_CMD_AGC_ENABLE 0

enum tda18271_mode {
    TDA18271_ANALOG = 0,
    TDA18271_DIGITAL,
};

#if defined(CONFIG_MEDIA_TUNER_TDA18271) || (defined(CONFIG_MEDIA_TUNER_TDA18271_MODULE) && defined(MODULE))
extern struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
                        struct i2c_adapter *i2c,
                        struct tda18271_config *cfg);
#else
static inline struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe,
                           u8 addr,
                           struct i2c_adapter *i2c,
                           struct tda18271_config *cfg)
{
    printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
    return NULL;
}
#endif

#endif /* __TDA18271_H__ */