1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* RadioTrack II driver
* Copyright 1998 Ben Pfaff
*
* Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
* Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk>
* Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
*
* Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org>
*
* Fully tested with actual hardware and the v4l2-compliance tool.
*/
#include <linux/module.h> /* Modules */
#include <linux/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */
#include <linux/delay.h> /* udelay */
#include <linux/videodev2.h> /* kernel radio structs */
#include <linux/mutex.h>
#include <linux/io.h> /* outb, outb_p */
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include "radio-isa.h"
MODULE_AUTHOR("Ben Pfaff");
MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.1.99");
#ifndef CONFIG_RADIO_RTRACK2_PORT
#define CONFIG_RADIO_RTRACK2_PORT -1
#endif
#define RTRACK2_MAX 2
static int io[RTRACK2_MAX] = { [0] = CONFIG_RADIO_RTRACK2_PORT,
[1 ... (RTRACK2_MAX - 1)] = -1 };
static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 };
module_param_array(io, int, NULL, 0444);
MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)");
module_param_array(radio_nr, int, NULL, 0444);
MODULE_PARM_DESC(radio_nr, "Radio device numbers");
static struct radio_isa_card *rtrack2_alloc(void)
{
return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL);
}
static void zero(struct radio_isa_card *isa)
{
outb_p(1, isa->io);
outb_p(3, isa->io);
outb_p(1, isa->io);
}
static void one(struct radio_isa_card *isa)
{
outb_p(5, isa->io);
outb_p(7, isa->io);
outb_p(5, isa->io);
}
static int rtrack2_s_frequency(struct radio_isa_card *isa, u32 freq)
{
int i;
freq = freq / 200 + 856;
outb_p(0xc8, isa->io);
outb_p(0xc9, isa->io);
outb_p(0xc9, isa->io);
for (i = 0; i < 10; i++)
zero(isa);
for (i = 14; i >= 0; i--)
if (freq & (1 << i))
one(isa);
else
zero(isa);
outb_p(0xc8, isa->io);
outb_p(v4l2_ctrl_g_ctrl(isa->mute), isa->io);
return 0;
}
static u32 rtrack2_g_signal(struct radio_isa_card *isa)
{
/* bit set = no signal present */
return (inb(isa->io) & 2) ? 0 : 0xffff;
}
static int rtrack2_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
outb(mute, isa->io);
return 0;
}
static const struct radio_isa_ops rtrack2_ops = {
.alloc = rtrack2_alloc,
.s_mute_volume = rtrack2_s_mute_volume,
.s_frequency = rtrack2_s_frequency,
.g_signal = rtrack2_g_signal,
};
static const int rtrack2_ioports[] = { 0x20f, 0x30f };
static struct radio_isa_driver rtrack2_driver = {
.driver = {
.match = radio_isa_match,
.probe = radio_isa_probe,
.remove = radio_isa_remove,
.driver = {
.name = "radio-rtrack2",
},
},
.io_params = io,
.radio_nr_params = radio_nr,
.io_ports = rtrack2_ioports,
.num_of_io_ports = ARRAY_SIZE(rtrack2_ioports),
.region_size = 4,
.card = "AIMSlab RadioTrack II",
.ops = &rtrack2_ops,
.has_stereo = true,
};
static int __init rtrack2_init(void)
{
return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX);
}
static void __exit rtrack2_exit(void)
{
isa_unregister_driver(&rtrack2_driver.driver);
}
module_init(rtrack2_init);
module_exit(rtrack2_exit);
|
