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/* SPDX-License-Identifier: GPL-2.0-or-later */
#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]>
*/
#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;
const 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_enum_freq_bands(struct snd_tea575x *tea,
struct v4l2_frequency_band *band);
int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v);
int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea,
const struct v4l2_hw_freq_seek *a);
int snd_tea575x_hw_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 */