1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | #ifndef __SOUND_TEA575X_TUNER_H |
3 | #define __SOUND_TEA575X_TUNER_H |
4 | |
5 | /* |
6 | * ALSA driver for TEA5757/5759 Philips AM/FM tuner chips |
7 | * |
8 | * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> |
9 | */ |
10 | |
11 | #include <linux/videodev2.h> |
12 | #include <media/v4l2-ctrls.h> |
13 | #include <media/v4l2-dev.h> |
14 | #include <media/v4l2-device.h> |
15 | |
16 | #define TEA575X_FMIF 10700 |
17 | #define TEA575X_AMIF 450 |
18 | |
19 | #define TEA575X_DATA (1 << 0) |
20 | #define TEA575X_CLK (1 << 1) |
21 | #define TEA575X_WREN (1 << 2) |
22 | #define TEA575X_MOST (1 << 3) |
23 | |
24 | struct snd_tea575x; |
25 | |
26 | struct snd_tea575x_ops { |
27 | /* Drivers using snd_tea575x must either define read_ and write_val */ |
28 | void (*write_val)(struct snd_tea575x *tea, u32 val); |
29 | u32 (*read_val)(struct snd_tea575x *tea); |
30 | /* Or define the 3 pin functions */ |
31 | void (*set_pins)(struct snd_tea575x *tea, u8 pins); |
32 | u8 (*get_pins)(struct snd_tea575x *tea); |
33 | void (*set_direction)(struct snd_tea575x *tea, bool output); |
34 | }; |
35 | |
36 | struct snd_tea575x { |
37 | struct v4l2_device *v4l2_dev; |
38 | struct v4l2_file_operations fops; |
39 | struct video_device vd; /* video device */ |
40 | int radio_nr; /* radio_nr */ |
41 | bool tea5759; /* 5759 chip is present */ |
42 | bool has_am; /* Device can tune to AM freqs */ |
43 | bool cannot_read_data; /* Device cannot read the data pin */ |
44 | bool cannot_mute; /* Device cannot mute */ |
45 | bool mute; /* Device is muted? */ |
46 | bool stereo; /* receiving stereo */ |
47 | bool tuned; /* tuned to a station */ |
48 | unsigned int val; /* hw value */ |
49 | u32 band; /* 0: FM, 1: FM-Japan, 2: AM */ |
50 | u32 freq; /* frequency */ |
51 | struct mutex mutex; |
52 | const struct snd_tea575x_ops *ops; |
53 | void *private_data; |
54 | u8 card[32]; |
55 | u8 bus_info[32]; |
56 | struct v4l2_ctrl_handler ctrl_handler; |
57 | int (*ext_init)(struct snd_tea575x *tea); |
58 | }; |
59 | |
60 | int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea, |
61 | struct v4l2_frequency_band *band); |
62 | int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v); |
63 | int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea, |
64 | const struct v4l2_hw_freq_seek *a); |
65 | int snd_tea575x_hw_init(struct snd_tea575x *tea); |
66 | int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner); |
67 | void snd_tea575x_exit(struct snd_tea575x *tea); |
68 | void snd_tea575x_set_freq(struct snd_tea575x *tea); |
69 | |
70 | #endif /* __SOUND_TEA575X_TUNER_H */ |
71 | |