Commit | Line | Data |
---|---|---|
09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
8bd7ef5a HV |
2 | /* |
3 | * RadioTrack II driver | |
4 | * Copyright 1998 Ben Pfaff | |
4286c6f6 | 5 | * |
1da177e4 | 6 | * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood |
d9b01449 | 7 | * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
8 | * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> |
9 | * | |
8bd7ef5a | 10 | * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> |
32590819 | 11 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org> |
4ca28661 HV |
12 | * |
13 | * Fully tested with actual hardware and the v4l2-compliance tool. | |
1da177e4 LT |
14 | */ |
15 | ||
6e6a8b5a | 16 | #include <linux/module.h> /* Modules */ |
1da177e4 | 17 | #include <linux/init.h> /* Initdata */ |
fb911ee8 | 18 | #include <linux/ioport.h> /* request_region */ |
1da177e4 | 19 | #include <linux/delay.h> /* udelay */ |
f8c559f8 | 20 | #include <linux/videodev2.h> /* kernel radio structs */ |
922c78e9 | 21 | #include <linux/mutex.h> |
922c78e9 | 22 | #include <linux/io.h> /* outb, outb_p */ |
a875431d | 23 | #include <linux/slab.h> |
922c78e9 | 24 | #include <media/v4l2-device.h> |
35ea11ff | 25 | #include <media/v4l2-ioctl.h> |
8bd7ef5a | 26 | #include "radio-isa.h" |
1da177e4 | 27 | |
922c78e9 HV |
28 | MODULE_AUTHOR("Ben Pfaff"); |
29 | MODULE_DESCRIPTION("A driver for the RadioTrack II radio card."); | |
30 | MODULE_LICENSE("GPL"); | |
8bd7ef5a | 31 | MODULE_VERSION("0.1.99"); |
f8c559f8 | 32 | |
1da177e4 LT |
33 | #ifndef CONFIG_RADIO_RTRACK2_PORT |
34 | #define CONFIG_RADIO_RTRACK2_PORT -1 | |
35 | #endif | |
36 | ||
8bd7ef5a | 37 | #define RTRACK2_MAX 2 |
1da177e4 | 38 | |
8bd7ef5a HV |
39 | static int io[RTRACK2_MAX] = { [0] = CONFIG_RADIO_RTRACK2_PORT, |
40 | [1 ... (RTRACK2_MAX - 1)] = -1 }; | |
41 | static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 }; | |
922c78e9 | 42 | |
8bd7ef5a HV |
43 | module_param_array(io, int, NULL, 0444); |
44 | MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)"); | |
45 | module_param_array(radio_nr, int, NULL, 0444); | |
46 | MODULE_PARM_DESC(radio_nr, "Radio device numbers"); | |
1da177e4 | 47 | |
8bd7ef5a | 48 | static struct radio_isa_card *rtrack2_alloc(void) |
1da177e4 | 49 | { |
8bd7ef5a | 50 | return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL); |
1da177e4 LT |
51 | } |
52 | ||
8bd7ef5a | 53 | static void zero(struct radio_isa_card *isa) |
1da177e4 | 54 | { |
8bd7ef5a HV |
55 | outb_p(1, isa->io); |
56 | outb_p(3, isa->io); | |
57 | outb_p(1, isa->io); | |
1da177e4 LT |
58 | } |
59 | ||
8bd7ef5a | 60 | static void one(struct radio_isa_card *isa) |
1da177e4 | 61 | { |
8bd7ef5a HV |
62 | outb_p(5, isa->io); |
63 | outb_p(7, isa->io); | |
64 | outb_p(5, isa->io); | |
1da177e4 LT |
65 | } |
66 | ||
8bd7ef5a | 67 | static int rtrack2_s_frequency(struct radio_isa_card *isa, u32 freq) |
1da177e4 LT |
68 | { |
69 | int i; | |
70 | ||
71 | freq = freq / 200 + 856; | |
4286c6f6 | 72 | |
8bd7ef5a HV |
73 | outb_p(0xc8, isa->io); |
74 | outb_p(0xc9, isa->io); | |
75 | outb_p(0xc9, isa->io); | |
1da177e4 LT |
76 | |
77 | for (i = 0; i < 10; i++) | |
8bd7ef5a | 78 | zero(isa); |
1da177e4 LT |
79 | |
80 | for (i = 14; i >= 0; i--) | |
81 | if (freq & (1 << i)) | |
8bd7ef5a | 82 | one(isa); |
1da177e4 | 83 | else |
8bd7ef5a | 84 | zero(isa); |
25f30389 | 85 | |
8bd7ef5a | 86 | outb_p(0xc8, isa->io); |
4ca28661 | 87 | outb_p(v4l2_ctrl_g_ctrl(isa->mute), isa->io); |
25f30389 DL |
88 | return 0; |
89 | } | |
f8c559f8 | 90 | |
8bd7ef5a | 91 | static u32 rtrack2_g_signal(struct radio_isa_card *isa) |
25f30389 | 92 | { |
8bd7ef5a HV |
93 | /* bit set = no signal present */ |
94 | return (inb(isa->io) & 2) ? 0 : 0xffff; | |
25f30389 | 95 | } |
f8c559f8 | 96 | |
8bd7ef5a | 97 | static int rtrack2_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) |
25f30389 | 98 | { |
8bd7ef5a | 99 | outb(mute, isa->io); |
25f30389 DL |
100 | return 0; |
101 | } | |
f8c559f8 | 102 | |
8bd7ef5a HV |
103 | static const struct radio_isa_ops rtrack2_ops = { |
104 | .alloc = rtrack2_alloc, | |
105 | .s_mute_volume = rtrack2_s_mute_volume, | |
106 | .s_frequency = rtrack2_s_frequency, | |
107 | .g_signal = rtrack2_g_signal, | |
1da177e4 LT |
108 | }; |
109 | ||
8bd7ef5a HV |
110 | static const int rtrack2_ioports[] = { 0x20f, 0x30f }; |
111 | ||
112 | static struct radio_isa_driver rtrack2_driver = { | |
113 | .driver = { | |
114 | .match = radio_isa_match, | |
115 | .probe = radio_isa_probe, | |
116 | .remove = radio_isa_remove, | |
117 | .driver = { | |
118 | .name = "radio-rtrack2", | |
119 | }, | |
120 | }, | |
121 | .io_params = io, | |
122 | .radio_nr_params = radio_nr, | |
123 | .io_ports = rtrack2_ioports, | |
124 | .num_of_io_ports = ARRAY_SIZE(rtrack2_ioports), | |
125 | .region_size = 4, | |
126 | .card = "AIMSlab RadioTrack II", | |
127 | .ops = &rtrack2_ops, | |
128 | .has_stereo = true, | |
1da177e4 LT |
129 | }; |
130 | ||
131 | static int __init rtrack2_init(void) | |
132 | { | |
8bd7ef5a | 133 | return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX); |
1da177e4 LT |
134 | } |
135 | ||
922c78e9 | 136 | static void __exit rtrack2_exit(void) |
1da177e4 | 137 | { |
8bd7ef5a | 138 | isa_unregister_driver(&rtrack2_driver.driver); |
1da177e4 LT |
139 | } |
140 | ||
141 | module_init(rtrack2_init); | |
922c78e9 | 142 | module_exit(rtrack2_exit); |