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Hans de Goede4faba762012-06-23 04:39:58 -03001#ifndef __RADIO_TEA5777_H
2#define __RADIO_TEA5777_H
3
4/*
5 * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips
6 *
7 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
8 *
9 * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips:
10 *
11 * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
12 * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 *
28 */
29
30#include <linux/videodev2.h>
31#include <media/v4l2-ctrls.h>
32#include <media/v4l2-dev.h>
33#include <media/v4l2-device.h>
34
35#define TEA575X_FMIF 10700
36#define TEA575X_AMIF 450
37
38struct radio_tea5777;
39
40struct radio_tea5777_ops {
41 /*
42 * Write the 6 bytes large write register of the tea5777
43 *
44 * val represents the 6 write registers, with byte 1 from the
45 * datasheet being the most significant byte (so byte 5 of the u64),
46 * and byte 6 from the datasheet being the least significant byte.
47 *
48 * returns 0 on success.
49 */
50 int (*write_reg)(struct radio_tea5777 *tea, u64 val);
51 /*
52 * Read the 3 bytes large read register of the tea5777
53 *
54 * The read value gets returned in val, akin to write_reg, byte 1 from
55 * the datasheet is stored as the most significant byte (so byte 2 of
56 * the u32), and byte 3 from the datasheet gets stored as the least
57 * significant byte (iow byte 0 of the u32).
58 *
59 * returns 0 on success.
60 */
61 int (*read_reg)(struct radio_tea5777 *tea, u32 *val);
62};
63
64struct radio_tea5777 {
65 struct v4l2_device *v4l2_dev;
66 struct v4l2_file_operations fops;
67 struct video_device vd; /* video device */
68 bool has_am; /* Device can tune to AM freqs */
69 bool write_before_read; /* must write before read quirk */
70 bool needs_write; /* for write before read quirk */
Hans de Goeded7aab0b2012-08-10 15:49:59 -030071 u32 band; /* current band */
Hans de Goede4faba762012-06-23 04:39:58 -030072 u32 freq; /* current frequency */
Hans de Goeded7aab0b2012-08-10 15:49:59 -030073 u32 audmode; /* last set audmode */
Hans de Goede4faba762012-06-23 04:39:58 -030074 u32 seek_rangelow; /* current hwseek limits */
75 u32 seek_rangehigh;
76 u32 read_reg;
77 u64 write_reg;
78 struct mutex mutex;
79 struct radio_tea5777_ops *ops;
80 void *private_data;
81 u8 card[32];
82 u8 bus_info[32];
83 struct v4l2_ctrl_handler ctrl_handler;
84};
85
86int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner);
87void radio_tea5777_exit(struct radio_tea5777 *tea);
Hans de Goeded1f280d2012-08-11 12:37:13 -030088int radio_tea5777_set_freq(struct radio_tea5777 *tea);
Hans de Goede4faba762012-06-23 04:39:58 -030089
90#endif /* __RADIO_TEA5777_H */