87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
#ifndef __RADIO_TEA5777_H
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#define __RADIO_TEA5777_H
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/*
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* v4l2 driver for TEA5777 Philips AM/FM radio tuner chips
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*
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* Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
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*
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* Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips:
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*
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* Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
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* Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
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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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struct radio_tea5777;
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struct radio_tea5777_ops {
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/*
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* Write the 6 bytes large write register of the tea5777
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*
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* val represents the 6 write registers, with byte 1 from the
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* datasheet being the most significant byte (so byte 5 of the u64),
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* and byte 6 from the datasheet being the least significant byte.
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*
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* returns 0 on success.
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*/
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int (*write_reg)(struct radio_tea5777 *tea, u64 val);
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/*
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* Read the 3 bytes large read register of the tea5777
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*
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* The read value gets returned in val, akin to write_reg, byte 1 from
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* the datasheet is stored as the most significant byte (so byte 2 of
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* the u32), and byte 3 from the datasheet gets stored as the least
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* significant byte (iow byte 0 of the u32).
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*
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* returns 0 on success.
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*/
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int (*read_reg)(struct radio_tea5777 *tea, u32 *val);
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};
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struct radio_tea5777 {
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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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bool has_am; /* Device can tune to AM freqs */
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bool write_before_read; /* must write before read quirk */
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bool needs_write; /* for write before read quirk */
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u32 band; /* current band */
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u32 freq; /* current frequency */
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u32 audmode; /* last set audmode */
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u32 seek_rangelow; /* current hwseek limits */
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u32 seek_rangehigh;
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u32 read_reg;
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u64 write_reg;
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struct mutex mutex;
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const struct radio_tea5777_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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};
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int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner);
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void radio_tea5777_exit(struct radio_tea5777 *tea);
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int radio_tea5777_set_freq(struct radio_tea5777 *tea);
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#endif /* __RADIO_TEA5777_H */
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