Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff |
4286c6f6 | 2 | * |
1da177e4 | 3 | * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood |
d9b01449 | 4 | * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> |
1da177e4 LT |
5 | * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> |
6 | * | |
7 | * TODO: Allow for more than one of these foolish entities :-) | |
8 | * | |
f8c559f8 | 9 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
1da177e4 LT |
10 | */ |
11 | ||
12 | #include <linux/module.h> /* Modules */ | |
13 | #include <linux/init.h> /* Initdata */ | |
fb911ee8 | 14 | #include <linux/ioport.h> /* request_region */ |
1da177e4 LT |
15 | #include <linux/delay.h> /* udelay */ |
16 | #include <asm/io.h> /* outb, outb_p */ | |
17 | #include <asm/uaccess.h> /* copy to/from user */ | |
f8c559f8 | 18 | #include <linux/videodev2.h> /* kernel radio structs */ |
5e87efa3 | 19 | #include <media/v4l2-common.h> |
35ea11ff | 20 | #include <media/v4l2-ioctl.h> |
1da177e4 LT |
21 | #include <linux/spinlock.h> |
22 | ||
f8c559f8 MCC |
23 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
24 | #define RADIO_VERSION KERNEL_VERSION(0,0,2) | |
25 | ||
26 | static struct v4l2_queryctrl radio_qctrl[] = { | |
27 | { | |
28 | .id = V4L2_CID_AUDIO_MUTE, | |
29 | .name = "Mute", | |
30 | .minimum = 0, | |
31 | .maximum = 1, | |
32 | .default_value = 1, | |
33 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
34 | },{ | |
35 | .id = V4L2_CID_AUDIO_VOLUME, | |
36 | .name = "Volume", | |
37 | .minimum = 0, | |
38 | .maximum = 65535, | |
39 | .step = 65535, | |
40 | .default_value = 0xff, | |
41 | .type = V4L2_CTRL_TYPE_INTEGER, | |
42 | } | |
43 | }; | |
44 | ||
1da177e4 LT |
45 | #ifndef CONFIG_RADIO_RTRACK2_PORT |
46 | #define CONFIG_RADIO_RTRACK2_PORT -1 | |
47 | #endif | |
48 | ||
4286c6f6 | 49 | static int io = CONFIG_RADIO_RTRACK2_PORT; |
1da177e4 LT |
50 | static int radio_nr = -1; |
51 | static spinlock_t lock; | |
52 | ||
53 | struct rt_device | |
54 | { | |
3ca685aa | 55 | unsigned long in_use; |
1da177e4 LT |
56 | int port; |
57 | unsigned long curfreq; | |
58 | int muted; | |
59 | }; | |
60 | ||
61 | ||
62 | /* local things */ | |
63 | ||
64 | static void rt_mute(struct rt_device *dev) | |
65 | { | |
4286c6f6 | 66 | if(dev->muted) |
1da177e4 LT |
67 | return; |
68 | spin_lock(&lock); | |
69 | outb(1, io); | |
70 | spin_unlock(&lock); | |
71 | dev->muted = 1; | |
72 | } | |
73 | ||
74 | static void rt_unmute(struct rt_device *dev) | |
75 | { | |
76 | if(dev->muted == 0) | |
77 | return; | |
78 | spin_lock(&lock); | |
79 | outb(0, io); | |
80 | spin_unlock(&lock); | |
81 | dev->muted = 0; | |
82 | } | |
83 | ||
84 | static void zero(void) | |
85 | { | |
4286c6f6 | 86 | outb_p(1, io); |
1da177e4 LT |
87 | outb_p(3, io); |
88 | outb_p(1, io); | |
89 | } | |
90 | ||
91 | static void one(void) | |
92 | { | |
4286c6f6 | 93 | outb_p(5, io); |
1da177e4 LT |
94 | outb_p(7, io); |
95 | outb_p(5, io); | |
96 | } | |
97 | ||
98 | static int rt_setfreq(struct rt_device *dev, unsigned long freq) | |
99 | { | |
100 | int i; | |
101 | ||
102 | freq = freq / 200 + 856; | |
4286c6f6 | 103 | |
1da177e4 LT |
104 | spin_lock(&lock); |
105 | ||
106 | outb_p(0xc8, io); | |
107 | outb_p(0xc9, io); | |
108 | outb_p(0xc9, io); | |
109 | ||
110 | for (i = 0; i < 10; i++) | |
111 | zero (); | |
112 | ||
113 | for (i = 14; i >= 0; i--) | |
114 | if (freq & (1 << i)) | |
115 | one (); | |
116 | else | |
117 | zero (); | |
118 | ||
119 | outb_p(0xc8, io); | |
120 | if (!dev->muted) | |
121 | outb_p(0, io); | |
4286c6f6 | 122 | |
1da177e4 LT |
123 | spin_unlock(&lock); |
124 | return 0; | |
125 | } | |
126 | ||
25f30389 DL |
127 | static int vidioc_querycap(struct file *file, void *priv, |
128 | struct v4l2_capability *v) | |
129 | { | |
130 | strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver)); | |
131 | strlcpy(v->card, "RadioTrack II", sizeof(v->card)); | |
132 | sprintf(v->bus_info, "ISA"); | |
133 | v->version = RADIO_VERSION; | |
134 | v->capabilities = V4L2_CAP_TUNER; | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static int vidioc_s_tuner(struct file *file, void *priv, | |
139 | struct v4l2_tuner *v) | |
140 | { | |
141 | if (v->index > 0) | |
142 | return -EINVAL; | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
1da177e4 LT |
147 | static int rt_getsigstr(struct rt_device *dev) |
148 | { | |
149 | if (inb(io) & 2) /* bit set = no signal present */ | |
150 | return 0; | |
151 | return 1; /* signal present */ | |
152 | } | |
153 | ||
25f30389 DL |
154 | static int vidioc_g_tuner(struct file *file, void *priv, |
155 | struct v4l2_tuner *v) | |
1da177e4 | 156 | { |
c170ecf4 | 157 | struct rt_device *rt = video_drvdata(file); |
25f30389 DL |
158 | |
159 | if (v->index > 0) | |
160 | return -EINVAL; | |
161 | ||
162 | strcpy(v->name, "FM"); | |
163 | v->type = V4L2_TUNER_RADIO; | |
164 | v->rangelow = (88*16000); | |
165 | v->rangehigh = (108*16000); | |
166 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
167 | v->capability = V4L2_TUNER_CAP_LOW; | |
168 | v->audmode = V4L2_TUNER_MODE_MONO; | |
169 | v->signal = 0xFFFF*rt_getsigstr(rt); | |
170 | return 0; | |
171 | } | |
f8c559f8 | 172 | |
25f30389 DL |
173 | static int vidioc_s_frequency(struct file *file, void *priv, |
174 | struct v4l2_frequency *f) | |
175 | { | |
c170ecf4 | 176 | struct rt_device *rt = video_drvdata(file); |
f8c559f8 | 177 | |
25f30389 DL |
178 | rt->curfreq = f->frequency; |
179 | rt_setfreq(rt, rt->curfreq); | |
180 | return 0; | |
181 | } | |
f8c559f8 | 182 | |
25f30389 DL |
183 | static int vidioc_g_frequency(struct file *file, void *priv, |
184 | struct v4l2_frequency *f) | |
185 | { | |
c170ecf4 | 186 | struct rt_device *rt = video_drvdata(file); |
f8c559f8 | 187 | |
25f30389 DL |
188 | f->type = V4L2_TUNER_RADIO; |
189 | f->frequency = rt->curfreq; | |
190 | return 0; | |
191 | } | |
f8c559f8 | 192 | |
25f30389 DL |
193 | static int vidioc_queryctrl(struct file *file, void *priv, |
194 | struct v4l2_queryctrl *qc) | |
195 | { | |
196 | int i; | |
f8c559f8 | 197 | |
25f30389 DL |
198 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
199 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
200 | memcpy(qc, &(radio_qctrl[i]), | |
201 | sizeof(*qc)); | |
1da177e4 LT |
202 | return 0; |
203 | } | |
25f30389 DL |
204 | } |
205 | return -EINVAL; | |
206 | } | |
f8c559f8 | 207 | |
25f30389 DL |
208 | static int vidioc_g_ctrl(struct file *file, void *priv, |
209 | struct v4l2_control *ctrl) | |
210 | { | |
c170ecf4 | 211 | struct rt_device *rt = video_drvdata(file); |
f8c559f8 | 212 | |
25f30389 DL |
213 | switch (ctrl->id) { |
214 | case V4L2_CID_AUDIO_MUTE: | |
215 | ctrl->value = rt->muted; | |
216 | return 0; | |
217 | case V4L2_CID_AUDIO_VOLUME: | |
218 | if (rt->muted) | |
219 | ctrl->value = 0; | |
220 | else | |
221 | ctrl->value = 65535; | |
222 | return 0; | |
1da177e4 | 223 | } |
25f30389 | 224 | return -EINVAL; |
1da177e4 LT |
225 | } |
226 | ||
25f30389 DL |
227 | static int vidioc_s_ctrl(struct file *file, void *priv, |
228 | struct v4l2_control *ctrl) | |
1da177e4 | 229 | { |
c170ecf4 | 230 | struct rt_device *rt = video_drvdata(file); |
25f30389 DL |
231 | |
232 | switch (ctrl->id) { | |
233 | case V4L2_CID_AUDIO_MUTE: | |
234 | if (ctrl->value) | |
235 | rt_mute(rt); | |
236 | else | |
237 | rt_unmute(rt); | |
238 | return 0; | |
239 | case V4L2_CID_AUDIO_VOLUME: | |
240 | if (ctrl->value) | |
241 | rt_unmute(rt); | |
242 | else | |
243 | rt_mute(rt); | |
244 | return 0; | |
245 | } | |
246 | return -EINVAL; | |
1da177e4 LT |
247 | } |
248 | ||
8b811cf0 DL |
249 | static int vidioc_g_audio(struct file *file, void *priv, |
250 | struct v4l2_audio *a) | |
251 | { | |
252 | if (a->index > 1) | |
253 | return -EINVAL; | |
254 | ||
255 | strcpy(a->name, "Radio"); | |
256 | a->capability = V4L2_AUDCAP_STEREO; | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
261 | { | |
262 | *i = 0; | |
263 | return 0; | |
264 | } | |
265 | ||
266 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
267 | { | |
268 | if (i != 0) | |
269 | return -EINVAL; | |
270 | return 0; | |
271 | } | |
272 | ||
273 | static int vidioc_s_audio(struct file *file, void *priv, | |
274 | struct v4l2_audio *a) | |
275 | { | |
276 | if (a->index != 0) | |
277 | return -EINVAL; | |
278 | return 0; | |
279 | } | |
280 | ||
1da177e4 LT |
281 | static struct rt_device rtrack2_unit; |
282 | ||
bec43661 | 283 | static int rtrack2_exclusive_open(struct file *file) |
3ca685aa HV |
284 | { |
285 | return test_and_set_bit(0, &rtrack2_unit.in_use) ? -EBUSY : 0; | |
286 | } | |
287 | ||
bec43661 | 288 | static int rtrack2_exclusive_release(struct file *file) |
3ca685aa HV |
289 | { |
290 | clear_bit(0, &rtrack2_unit.in_use); | |
291 | return 0; | |
292 | } | |
293 | ||
bec43661 | 294 | static const struct v4l2_file_operations rtrack2_fops = { |
1da177e4 | 295 | .owner = THIS_MODULE, |
3ca685aa HV |
296 | .open = rtrack2_exclusive_open, |
297 | .release = rtrack2_exclusive_release, | |
25f30389 | 298 | .ioctl = video_ioctl2, |
1da177e4 LT |
299 | }; |
300 | ||
a399810c | 301 | static const struct v4l2_ioctl_ops rtrack2_ioctl_ops = { |
25f30389 DL |
302 | .vidioc_querycap = vidioc_querycap, |
303 | .vidioc_g_tuner = vidioc_g_tuner, | |
304 | .vidioc_s_tuner = vidioc_s_tuner, | |
305 | .vidioc_g_frequency = vidioc_g_frequency, | |
306 | .vidioc_s_frequency = vidioc_s_frequency, | |
307 | .vidioc_queryctrl = vidioc_queryctrl, | |
308 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
309 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
8b811cf0 DL |
310 | .vidioc_g_audio = vidioc_g_audio, |
311 | .vidioc_s_audio = vidioc_s_audio, | |
312 | .vidioc_g_input = vidioc_g_input, | |
313 | .vidioc_s_input = vidioc_s_input, | |
1da177e4 LT |
314 | }; |
315 | ||
a399810c | 316 | static struct video_device rtrack2_radio = { |
a399810c | 317 | .name = "RadioTrack II radio", |
a399810c HV |
318 | .fops = &rtrack2_fops, |
319 | .ioctl_ops = &rtrack2_ioctl_ops, | |
aa5e90af | 320 | .release = video_device_release_empty, |
a399810c HV |
321 | }; |
322 | ||
1da177e4 LT |
323 | static int __init rtrack2_init(void) |
324 | { | |
325 | if(io==-1) | |
326 | { | |
327 | printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n"); | |
328 | return -EINVAL; | |
329 | } | |
4286c6f6 | 330 | if (!request_region(io, 4, "rtrack2")) |
1da177e4 LT |
331 | { |
332 | printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io); | |
333 | return -EBUSY; | |
334 | } | |
335 | ||
601e9444 | 336 | video_set_drvdata(&rtrack2_radio, &rtrack2_unit); |
1da177e4 | 337 | |
4286c6f6 | 338 | spin_lock_init(&lock); |
cba99ae8 | 339 | if (video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr) < 0) { |
1da177e4 LT |
340 | release_region(io, 4); |
341 | return -EINVAL; | |
342 | } | |
4286c6f6 | 343 | |
1da177e4 LT |
344 | printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n"); |
345 | ||
4286c6f6 | 346 | /* mute card - prevents noisy bootups */ |
1da177e4 LT |
347 | outb(1, io); |
348 | rtrack2_unit.muted = 1; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | MODULE_AUTHOR("Ben Pfaff"); | |
354 | MODULE_DESCRIPTION("A driver for the RadioTrack II radio card."); | |
355 | MODULE_LICENSE("GPL"); | |
356 | ||
357 | module_param(io, int, 0); | |
358 | MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)"); | |
359 | module_param(radio_nr, int, 0); | |
360 | ||
361 | static void __exit rtrack2_cleanup_module(void) | |
362 | { | |
363 | video_unregister_device(&rtrack2_radio); | |
364 | release_region(io,4); | |
365 | } | |
366 | ||
367 | module_init(rtrack2_init); | |
368 | module_exit(rtrack2_cleanup_module); | |
369 | ||
370 | /* | |
371 | Local variables: | |
372 | compile-command: "mmake" | |
373 | End: | |
374 | */ |