1#ifndef __SOUND_TEA575X_TUNER_H
2#define __SOUND_TEA575X_TUNER_H
3
4/*
5 *   ALSA driver for TEA5757/5759 Philips AM/FM tuner chips
6 *
7 *	Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
8 *
9 *   This program is free software; you can redistribute it and/or modify
10 *   it under the terms of the GNU General Public License as published by
11 *   the Free Software Foundation; either version 2 of the License, or
12 *   (at your option) any later version.
13 *
14 *   This program is distributed in the hope that it will be useful,
15 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *   GNU General Public License for more details.
18 *
19 *   You should have received a copy of the GNU General Public License
20 *   along with this program; if not, write to the Free Software
21 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22 *
23 */
24
25#include <linux/videodev2.h>
26#include <media/v4l2-ctrls.h>
27#include <media/v4l2-dev.h>
28#include <media/v4l2-device.h>
29
30#define TEA575X_FMIF	10700
31#define TEA575X_AMIF	  450
32
33#define TEA575X_DATA	(1 << 0)
34#define TEA575X_CLK	(1 << 1)
35#define TEA575X_WREN	(1 << 2)
36#define TEA575X_MOST	(1 << 3)
37
38struct snd_tea575x;
39
40struct snd_tea575x_ops {
41	/* Drivers using snd_tea575x must either define read_ and write_val */
42	void (*write_val)(struct snd_tea575x *tea, u32 val);
43	u32 (*read_val)(struct snd_tea575x *tea);
44	/* Or define the 3 pin functions */
45	void (*set_pins)(struct snd_tea575x *tea, u8 pins);
46	u8 (*get_pins)(struct snd_tea575x *tea);
47	void (*set_direction)(struct snd_tea575x *tea, bool output);
48};
49
50struct snd_tea575x {
51	struct v4l2_device *v4l2_dev;
52	struct v4l2_file_operations fops;
53	struct video_device vd;		/* video device */
54	int radio_nr;			/* radio_nr */
55	bool tea5759;			/* 5759 chip is present */
56	bool has_am;			/* Device can tune to AM freqs */
57	bool cannot_read_data;		/* Device cannot read the data pin */
58	bool cannot_mute;		/* Device cannot mute */
59	bool mute;			/* Device is muted? */
60	bool stereo;			/* receiving stereo */
61	bool tuned;			/* tuned to a station */
62	unsigned int val;		/* hw value */
63	u32 band;			/* 0: FM, 1: FM-Japan, 2: AM */
64	u32 freq;			/* frequency */
65	struct mutex mutex;
66	struct snd_tea575x_ops *ops;
67	void *private_data;
68	u8 card[32];
69	u8 bus_info[32];
70	struct v4l2_ctrl_handler ctrl_handler;
71	int (*ext_init)(struct snd_tea575x *tea);
72};
73
74int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea,
75					struct v4l2_frequency_band *band);
76int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v);
77int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea,
78				const struct v4l2_hw_freq_seek *a);
79int snd_tea575x_hw_init(struct snd_tea575x *tea);
80int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
81void snd_tea575x_exit(struct snd_tea575x *tea);
82void snd_tea575x_set_freq(struct snd_tea575x *tea);
83
84#endif /* __SOUND_TEA575X_TUNER_H */
85