include/sound/tea575x-tuner.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  *   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/videodev.h>
  26 #include <media/v4l2-dev.h>
  27
  28 struct snd_tea575x;
  29
  30 struct snd_tea575x_ops {
  31         void (*write)(struct snd_tea575x *tea, unsigned int val);
  32         unsigned int (*read)(struct snd_tea575x *tea);
  33         void (*mute)(struct snd_tea575x *tea, unsigned int mute);
  34 };
  35
  36 struct snd_tea575x {
  37         struct snd_card *card;
  38         struct video_device vd;         /* video device */
  39         struct v4l2_file_operations fops;
  40         int dev_nr;                     /* requested device number + 1 */
  41         int vd_registered;              /* video device is registered */
  42         int tea5759;                    /* 5759 chip is present */
  43         unsigned int freq_fixup;        /* crystal onboard */
  44         unsigned int val;               /* hw value */
  45         unsigned long freq;             /* frequency */
  46         unsigned long in_use;           /* set if the device is in use */
  47         struct snd_tea575x_ops *ops;
  48         void *private_data;
  49 };
  50
  51 void snd_tea575x_init(struct snd_tea575x *tea);
  52 void snd_tea575x_exit(struct snd_tea575x *tea);
  53
  54 #endif /* __SOUND_TEA575X_TUNER_H */