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 */ 81