| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 | */ |
| 20 | |
| 21 | #include <linux/videodev2.h> |
| 22 | #include <media/v4l2-ctrls.h> |
| 23 | #include <media/v4l2-dev.h> |
| 24 | #include <media/v4l2-device.h> |
| 25 | |
| 26 | #define TEA575X_FMIF 10700 |
| 27 | #define TEA575X_AMIF 450 |
| 28 | |
| 29 | #define TEA575X_DATA (1 << 0) |
| 30 | #define TEA575X_CLK (1 << 1) |
| 31 | #define TEA575X_WREN (1 << 2) |
| 32 | #define TEA575X_MOST (1 << 3) |
| 33 | |
| 34 | struct snd_tea575x; |
| 35 | |
| 36 | struct snd_tea575x_ops { |
| 37 | /* Drivers using snd_tea575x must either define read_ and write_val */ |
| 38 | void (*write_val)(struct snd_tea575x *tea, u32 val); |
| 39 | u32 (*read_val)(struct snd_tea575x *tea); |
| 40 | /* Or define the 3 pin functions */ |
| 41 | void (*set_pins)(struct snd_tea575x *tea, u8 pins); |
| 42 | u8 (*get_pins)(struct snd_tea575x *tea); |
| 43 | void (*set_direction)(struct snd_tea575x *tea, bool output); |
| 44 | }; |
| 45 | |
| 46 | struct snd_tea575x { |
| 47 | struct v4l2_device *v4l2_dev; |
| 48 | struct v4l2_file_operations fops; |
| 49 | struct video_device vd; /* video device */ |
| 50 | int radio_nr; /* radio_nr */ |
| 51 | bool tea5759; /* 5759 chip is present */ |
| 52 | bool has_am; /* Device can tune to AM freqs */ |
| 53 | bool cannot_read_data; /* Device cannot read the data pin */ |
| 54 | bool cannot_mute; /* Device cannot mute */ |
| 55 | bool mute; /* Device is muted? */ |
| 56 | bool stereo; /* receiving stereo */ |
| 57 | bool tuned; /* tuned to a station */ |
| 58 | unsigned int val; /* hw value */ |
| 59 | u32 band; /* 0: FM, 1: FM-Japan, 2: AM */ |
| 60 | u32 freq; /* frequency */ |
| 61 | struct mutex mutex; |
| 62 | const struct snd_tea575x_ops *ops; |
| 63 | void *private_data; |
| 64 | u8 card[32]; |
| 65 | u8 bus_info[32]; |
| 66 | struct v4l2_ctrl_handler ctrl_handler; |
| 67 | int (*ext_init)(struct snd_tea575x *tea); |
| 68 | }; |
| 69 | |
| 70 | int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea, |
| 71 | struct v4l2_frequency_band *band); |
| 72 | int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v); |
| 73 | int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea, |
| 74 | const struct v4l2_hw_freq_seek *a); |
| 75 | int snd_tea575x_hw_init(struct snd_tea575x *tea); |
| 76 | int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner); |
| 77 | void snd_tea575x_exit(struct snd_tea575x *tea); |
| 78 | void snd_tea575x_set_freq(struct snd_tea575x *tea); |
| 79 | |
| 80 | #endif /* __SOUND_TEA575X_TUNER_H */ |