tda1004x.h

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  /*
     Driver for Philips tda1004xh OFDM Frontend

     (c) 2004 Andrew de Quincey

     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 TDA1004X_H
#define TDA1004X_H

#include <linux/dvb/frontend.h>
#include <linux/firmware.h>

enum tda10046_xtal {
    TDA10046_XTAL_4M,
    TDA10046_XTAL_16M,
};

enum tda10046_agc {
    TDA10046_AGC_DEFAULT,       /* original configuration */
    TDA10046_AGC_IFO_AUTO_NEG,  /* IF AGC only, automatic, negtive */
    TDA10046_AGC_IFO_AUTO_POS,  /* IF AGC only, automatic, positive */
    TDA10046_AGC_TDA827X,       /* IF AGC only, special setup for tda827x */
};

/* Many (hybrid) boards use GPIO 1 and 3
    GPIO1   analog - dvb switch
    GPIO3   firmware eeprom address switch
*/
enum tda10046_gpio {
    TDA10046_GPTRI  = 0x00,     /* All GPIOs tristate */
    TDA10046_GP00   = 0x40,     /* GPIO3=0, GPIO1=0 */
    TDA10046_GP01   = 0x42,     /* GPIO3=0, GPIO1=1 */
    TDA10046_GP10   = 0x48,     /* GPIO3=1, GPIO1=0 */
    TDA10046_GP11   = 0x4a,     /* GPIO3=1, GPIO1=1 */
    TDA10046_GP00_I = 0x80,     /* GPIO3=0, GPIO1=0, invert in sleep mode*/
    TDA10046_GP01_I = 0x82,     /* GPIO3=0, GPIO1=1, invert in sleep mode */
    TDA10046_GP10_I = 0x88,     /* GPIO3=1, GPIO1=0, invert in sleep mode */
    TDA10046_GP11_I = 0x8a,     /* GPIO3=1, GPIO1=1, invert in sleep mode */
};

enum tda10046_if {
    TDA10046_FREQ_3617,     /* original config, 36,166 MHZ */
    TDA10046_FREQ_3613,     /* 36,13 MHZ */
    TDA10046_FREQ_045,      /* low IF, 4.0, 4.5, or 5.0 MHZ */
    TDA10046_FREQ_052,      /* low IF, 5.1667 MHZ for tda9889 */
};

enum tda10046_tsout {
    TDA10046_TS_PARALLEL  = 0x00,   /* parallel transport stream, default */
    TDA10046_TS_SERIAL    = 0x01,   /* serial transport stream */
};

struct tda1004x_config
{
    /* the demodulator's i2c address */
    u8 demod_address;

    /* does the "inversion" need inverted? */
    u8 invert;

    /* Does the OCLK signal need inverted? */
    u8 invert_oclk;

    /* parallel or serial transport stream */
    enum tda10046_tsout ts_mode;

    /* Xtal frequency, 4 or 16MHz*/
    enum tda10046_xtal xtal_freq;

    /* IF frequency */
    enum tda10046_if if_freq;

    /* AGC configuration */
    enum tda10046_agc agc_config;

    /* setting of GPIO1 and 3 */
    enum tda10046_gpio gpio_config;

    /* slave address and configuration of the tuner */
    u8 tuner_address;
    u8 antenna_switch;

    /* if the board uses another I2c Bridge (tda8290), its address */
    u8 i2c_gate;

    /* request firmware for device */
    int (*request_firmware)(struct dvb_frontend* fe, const struct firmware **fw, char* name);
};

enum tda1004x_demod {
    TDA1004X_DEMOD_TDA10045,
    TDA1004X_DEMOD_TDA10046,
};

struct tda1004x_state {
    struct i2c_adapter* i2c;
    const struct tda1004x_config* config;
    struct dvb_frontend frontend;

    /* private demod data */
    enum tda1004x_demod demod_type;
};

#if defined(CONFIG_DVB_TDA1004X) || (defined(CONFIG_DVB_TDA1004X_MODULE) && defined(MODULE))
extern struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
                        struct i2c_adapter* i2c);

extern struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
                        struct i2c_adapter* i2c);
#else
static inline struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
                        struct i2c_adapter* i2c)
{
    printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
    return NULL;
}
static inline struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
                        struct i2c_adapter* i2c)
{
    printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
    return NULL;
}
#endif // CONFIG_DVB_TDA1004X

static inline int tda1004x_writereg(struct dvb_frontend *fe, u8 reg, u8 val) {
    int r = 0;
    u8 buf[] = {reg, val};
    if (fe->ops.write)
        r = fe->ops.write(fe, buf, 2);
    return r;
}

#endif // TDA1004X_H