LXR linux/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
  34struct snd_tea575x;
  35
  36struct 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
  46struct 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
  70int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea,
  71                                        struct v4l2_frequency_band *band);
  72int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v);
  73int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea,
  74                                const struct v4l2_hw_freq_seek *a);
  75int snd_tea575x_hw_init(struct snd_tea575x *tea);
  76int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
  77void snd_tea575x_exit(struct snd_tea575x *tea);
  78void snd_tea575x_set_freq(struct snd_tea575x *tea);
  79
  80#endif /* __SOUND_TEA575X_TUNER_H */
  81