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4faba767 HG |
1 | #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 | ||
38 | struct radio_tea5777; | |
39 | ||
40 | struct 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 | ||
64 | struct 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 */ | |
71 | u32 freq; /* current frequency */ | |
72 | u32 seek_rangelow; /* current hwseek limits */ | |
73 | u32 seek_rangehigh; | |
74 | u32 read_reg; | |
75 | u64 write_reg; | |
76 | struct mutex mutex; | |
77 | struct radio_tea5777_ops *ops; | |
78 | void *private_data; | |
79 | u8 card[32]; | |
80 | u8 bus_info[32]; | |
81 | struct v4l2_ctrl_handler ctrl_handler; | |
82 | }; | |
83 | ||
84 | int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner); | |
85 | void radio_tea5777_exit(struct radio_tea5777 *tea); | |
86 | ||
87 | #endif /* __RADIO_TEA5777_H */ |