tea575x-tuner.h

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#ifndef __SOUND_TEA575X_TUNER_H
#define __SOUND_TEA575X_TUNER_H

/*
 *   ALSA driver for TEA5757/5759 Philips AM/FM tuner chips
 *
 *  Copyright (c) 2004 Jaroslav Kysela <[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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>

#define TEA575X_FMIF    10700
#define TEA575X_AMIF      450

#define TEA575X_DATA    (1 << 0)
#define TEA575X_CLK (1 << 1)
#define TEA575X_WREN    (1 << 2)
#define TEA575X_MOST    (1 << 3)

struct snd_tea575x;

struct snd_tea575x_ops {
    /* Drivers using snd_tea575x must either define read_ and write_val */
    void (*write_val)(struct snd_tea575x *tea, u32 val);
    u32 (*read_val)(struct snd_tea575x *tea);
    /* Or define the 3 pin functions */
    void (*set_pins)(struct snd_tea575x *tea, u8 pins);
    u8 (*get_pins)(struct snd_tea575x *tea);
    void (*set_direction)(struct snd_tea575x *tea, bool output);
};

struct snd_tea575x {
    struct v4l2_device *v4l2_dev;
    struct v4l2_file_operations fops;
    struct video_device vd;     /* video device */
    int radio_nr;           /* radio_nr */
    bool tea5759;           /* 5759 chip is present */
    bool has_am;            /* Device can tune to AM freqs */
    bool cannot_read_data;      /* Device cannot read the data pin */
    bool cannot_mute;       /* Device cannot mute */
    bool mute;          /* Device is muted? */
    bool stereo;            /* receiving stereo */
    bool tuned;         /* tuned to a station */
    unsigned int val;       /* hw value */
    u32 band;           /* 0: FM, 1: FM-Japan, 2: AM */
    u32 freq;           /* frequency */
    struct mutex mutex;
    struct snd_tea575x_ops *ops;
    void *private_data;
    u8 card[32];
    u8 bus_info[32];
    struct v4l2_ctrl_handler ctrl_handler;
    int (*ext_init)(struct snd_tea575x *tea);
};

int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
void snd_tea575x_exit(struct snd_tea575x *tea);
void snd_tea575x_set_freq(struct snd_tea575x *tea);

#endif /* __SOUND_TEA575X_TUNER_H */