1 #ifndef __SOUND_TEA575X_TUNER_H
2 #define __SOUND_TEA575X_TUNER_H
5 * ALSA driver for TEA5757/5759 Philips AM/FM tuner chips
7 * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
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.
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.
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
25 #include <linux/videodev2.h>
26 #include <media/v4l2-ctrls.h>
27 #include <media/v4l2-dev.h>
28 #include <media/v4l2-device.h>
30 #define TEA575X_FMIF 10700
31 #define TEA575X_AMIF 450
33 #define TEA575X_DATA (1 << 0)
34 #define TEA575X_CLK (1 << 1)
35 #define TEA575X_WREN (1 << 2)
36 #define TEA575X_MOST (1 << 3)
40 struct 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);
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 */
66 struct snd_tea575x_ops *ops;
70 struct v4l2_ctrl_handler ctrl_handler;
71 int (*ext_init)(struct snd_tea575x *tea);
74 int snd_tea575x_hw_init(struct snd_tea575x *tea);
75 int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
76 void snd_tea575x_exit(struct snd_tea575x *tea);
77 void snd_tea575x_set_freq(struct snd_tea575x *tea);
79 #endif /* __SOUND_TEA575X_TUNER_H */