include/media/drv-intf/tea575x.h

   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 */