81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
#ifndef __SOUND_TEA575X_TUNER_H
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#define __SOUND_TEA575X_TUNER_H
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/*
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* ALSA driver for TEA5757/5759 Philips AM/FM tuner chips
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*
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* Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/videodev2.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#define TEA575X_FMIF 10700
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#define TEA575X_AMIF 450
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#define TEA575X_DATA (1 << 0)
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#define TEA575X_CLK (1 << 1)
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#define TEA575X_WREN (1 << 2)
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#define TEA575X_MOST (1 << 3)
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struct snd_tea575x;
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struct snd_tea575x_ops {
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/* Drivers using snd_tea575x must either define read_ and write_val */
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void (*write_val)(struct snd_tea575x *tea, u32 val);
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u32 (*read_val)(struct snd_tea575x *tea);
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/* Or define the 3 pin functions */
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void (*set_pins)(struct snd_tea575x *tea, u8 pins);
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u8 (*get_pins)(struct snd_tea575x *tea);
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void (*set_direction)(struct snd_tea575x *tea, bool output);
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};
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struct snd_tea575x {
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struct v4l2_device *v4l2_dev;
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struct v4l2_file_operations fops;
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struct video_device vd; /* video device */
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int radio_nr; /* radio_nr */
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bool tea5759; /* 5759 chip is present */
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bool has_am; /* Device can tune to AM freqs */
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bool cannot_read_data; /* Device cannot read the data pin */
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bool cannot_mute; /* Device cannot mute */
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bool mute; /* Device is muted? */
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bool stereo; /* receiving stereo */
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bool tuned; /* tuned to a station */
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unsigned int val; /* hw value */
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u32 band; /* 0: FM, 1: FM-Japan, 2: AM */
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u32 freq; /* frequency */
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struct mutex mutex;
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const struct snd_tea575x_ops *ops;
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void *private_data;
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u8 card[32];
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u8 bus_info[32];
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struct v4l2_ctrl_handler ctrl_handler;
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int (*ext_init)(struct snd_tea575x *tea);
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};
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int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea,
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struct v4l2_frequency_band *band);
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int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v);
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int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea,
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const struct v4l2_hw_freq_seek *a);
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int snd_tea575x_hw_init(struct snd_tea575x *tea);
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int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner);
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void snd_tea575x_exit(struct snd_tea575x *tea);
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void snd_tea575x_set_freq(struct snd_tea575x *tea);
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#endif /* __SOUND_TEA575X_TUNER_H */
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