include/media/drv-intf/tea575x.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef __SOUND_TEA575X_TUNER_H
   3 #define __SOUND_TEA575X_TUNER_H
   4
   5 /*
   6  *   ALSA driver for TEA5757/5759 Philips AM/FM tuner chips
   7  *
   8  *      Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
   9  */
  10
  11 #include <linux/videodev2.h>
  12 #include <media/v4l2-ctrls.h>
  13 #include <media/v4l2-dev.h>
  14 #include <media/v4l2-device.h>
  15
  16 #define TEA575X_FMIF    10700
  17 #define TEA575X_AMIF      450
  18
  19 #define TEA575X_DATA    (1 << 0)
  20 #define TEA575X_CLK     (1 << 1)
  21 #define TEA575X_WREN    (1 << 2)
  22 #define TEA575X_MOST    (1 << 3)
  23
  24 struct snd_tea575x;
  25
  26 struct snd_tea575x_ops {
  27         /* Drivers using snd_tea575x must either define read_ and write_val */
  28         void (*write_val)(struct snd_tea575x *tea, u32 val);
  29         u32 (*read_val)(struct snd_tea575x *tea);
  30         /* Or define the 3 pin functions */
  31         void (*set_pins)(struct snd_tea575x *tea, u8 pins);
  32         u8 (*get_pins)(struct snd_tea575x *tea);
  33         void (*set_direction)(struct snd_tea575x *tea, bool output);
  34 };
  35
  36 struct snd_tea575x {
  37         struct v4l2_device *v4l2_dev;
  38         struct v4l2_file_operations fops;
  39         struct video_device vd;         /* video device */
  40         int radio_nr;                   /* radio_nr */
  41         bool tea5759;                   /* 5759 chip is present */
  42         bool has_am;                    /* Device can tune to AM freqs */
  43         bool cannot_read_data;          /* Device cannot read the data pin */
  44         bool cannot_mute;               /* Device cannot mute */
  45         bool mute;                      /* Device is muted? */
  46         bool stereo;                    /* receiving stereo */
  47         bool tuned;                     /* tuned to a station */
  48         unsigned int val;               /* hw value */
  49         u32 band;                       /* 0: FM, 1: FM-Japan, 2: AM */
  50         u32 freq;                       /* frequency */
  51         struct mutex mutex;
  52         const struct snd_tea575x_ops *ops;
  53         void *private_data;
  54         u8 card[32];
  55         u8 bus_info[32];
  56         struct v4l2_ctrl_handler ctrl_handler;
  57         int (*ext_init)(struct snd_tea575x *tea);
  58 };
  59
  60 int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea,
  61                                         struct v4l2_frequency_band *band);
  62 int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v);
  63 int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea,
  64                                 const struct v4l2_hw_freq_seek *a);
  65 int snd_tea575x_hw_init(struct snd_tea575x *tea);
  66 int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
  67 void snd_tea575x_exit(struct snd_tea575x *tea);
  68 void snd_tea575x_set_freq(struct snd_tea575x *tea);
  69
  70 #endif /* __SOUND_TEA575X_TUNER_H */