linux/include/sound/tea575x-tuner.h
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   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 *   You should have received a copy of the GNU General Public License
  20 *   along with this program; if not, write to the Free Software
  21 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22 *
  23 */
  24
  25#include <linux/videodev2.h>
  26#include <media/v4l2-ctrls.h>
  27#include <media/v4l2-dev.h>
  28#include <media/v4l2-device.h>
  29
  30#define TEA575X_FMIF    10700
  31#define TEA575X_AMIF      450
  32
  33#define TEA575X_DATA    (1 << 0)
  34#define TEA575X_CLK     (1 << 1)
  35#define TEA575X_WREN    (1 << 2)
  36#define TEA575X_MOST    (1 << 3)
  37
  38struct snd_tea575x;
  39
  40struct snd_tea575x_ops {
  41        /* Drivers using snd_tea575x must either define read_ and write_val */
  42        void (*write_val)(struct snd_tea575x *tea, u32 val);
  43        u32 (*read_val)(struct snd_tea575x *tea);
  44        /* Or define the 3 pin functions */
  45        void (*set_pins)(struct snd_tea575x *tea, u8 pins);
  46        u8 (*get_pins)(struct snd_tea575x *tea);
  47        void (*set_direction)(struct snd_tea575x *tea, bool output);
  48};
  49
  50struct snd_tea575x {
  51        struct v4l2_device *v4l2_dev;
  52        struct v4l2_file_operations fops;
  53        struct video_device vd;         /* video device */
  54        int radio_nr;                   /* radio_nr */
  55        bool tea5759;                   /* 5759 chip is present */
  56        bool has_am;                    /* Device can tune to AM freqs */
  57        bool cannot_read_data;          /* Device cannot read the data pin */
  58        bool cannot_mute;               /* Device cannot mute */
  59        bool mute;                      /* Device is muted? */
  60        bool stereo;                    /* receiving stereo */
  61        bool tuned;                     /* tuned to a station */
  62        unsigned int val;               /* hw value */
  63        u32 band;                       /* 0: FM, 1: FM-Japan, 2: AM */
  64        u32 freq;                       /* frequency */
  65        struct mutex mutex;
  66        struct snd_tea575x_ops *ops;
  67        void *private_data;
  68        u8 card[32];
  69        u8 bus_info[32];
  70        struct v4l2_ctrl_handler ctrl_handler;
  71        int (*ext_init)(struct snd_tea575x *tea);
  72};
  73
  74int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
  75void snd_tea575x_exit(struct snd_tea575x *tea);
  76void snd_tea575x_set_freq(struct snd_tea575x *tea);
  77
  78#endif /* __SOUND_TEA575X_TUNER_H */
  79
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