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Commit | Line | Data |
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1da177e4 LT |
1 | /* radio-cadet.c - A video4linux driver for the ADS Cadet AM/FM Radio Card |
2 | * | |
3 | * by Fred Gleason <fredg@wava.com> | |
4 | * Version 0.3.3 | |
5 | * | |
6 | * (Loosely) based on code for the Aztech radio card by | |
7 | * | |
8 | * Russell Kroll (rkroll@exploits.org) | |
9 | * Quay Ly | |
10 | * Donald Song | |
4286c6f6 | 11 | * Jason Lewis (jlewis@twilight.vtc.vsc.edu) |
1da177e4 LT |
12 | * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) |
13 | * William McGrath (wmcgrath@twilight.vtc.vsc.edu) | |
14 | * | |
15 | * History: | |
16 | * 2000-04-29 Russell Kroll <rkroll@exploits.org> | |
17 | * Added ISAPnP detection for Linux 2.3/2.4 | |
18 | * | |
19 | * 2001-01-10 Russell Kroll <rkroll@exploits.org> | |
20 | * Removed dead CONFIG_RADIO_CADET_PORT code | |
21 | * PnP detection on load is now default (no args necessary) | |
22 | * | |
23 | * 2002-01-17 Adam Belay <ambx1@neo.rr.com> | |
24 | * Updated to latest pnp code | |
25 | * | |
d9b01449 | 26 | * 2003-01-31 Alan Cox <alan@lxorguk.ukuu.org.uk> |
1da177e4 | 27 | * Cleaned up locking, delay code, general odds and ends |
c0c7fa09 HK |
28 | * |
29 | * 2006-07-30 Hans J. Koch <koch@hjk-az.de> | |
30 | * Changed API to V4L2 | |
1da177e4 LT |
31 | */ |
32 | ||
d591b9cc | 33 | #include <linux/version.h> |
1da177e4 LT |
34 | #include <linux/module.h> /* Modules */ |
35 | #include <linux/init.h> /* Initdata */ | |
fb911ee8 | 36 | #include <linux/ioport.h> /* request_region */ |
1da177e4 | 37 | #include <linux/delay.h> /* udelay */ |
c0c7fa09 | 38 | #include <linux/videodev2.h> /* V4L2 API defs */ |
1da177e4 LT |
39 | #include <linux/param.h> |
40 | #include <linux/pnp.h> | |
bec2aec5 | 41 | #include <linux/io.h> /* outb, outb_p */ |
bec2aec5 HV |
42 | #include <media/v4l2-device.h> |
43 | #include <media/v4l2-ioctl.h> | |
44 | ||
45 | MODULE_AUTHOR("Fred Gleason, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); | |
46 | MODULE_DESCRIPTION("A driver for the ADS Cadet AM/FM/RDS radio card."); | |
47 | MODULE_LICENSE("GPL"); | |
48 | ||
49 | static int io = -1; /* default to isapnp activation */ | |
50 | static int radio_nr = -1; | |
51 | ||
52 | module_param(io, int, 0); | |
53 | MODULE_PARM_DESC(io, "I/O address of Cadet card (0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e)"); | |
54 | module_param(radio_nr, int, 0); | |
55 | ||
56 | #define CADET_VERSION KERNEL_VERSION(0, 3, 3) | |
1da177e4 LT |
57 | |
58 | #define RDS_BUFFER 256 | |
c0c7fa09 HK |
59 | #define RDS_RX_FLAG 1 |
60 | #define MBS_RX_FLAG 2 | |
61 | ||
bec2aec5 HV |
62 | struct cadet { |
63 | struct v4l2_device v4l2_dev; | |
64 | struct video_device vdev; | |
65 | int io; | |
66 | int users; | |
67 | int curtuner; | |
68 | int tunestat; | |
69 | int sigstrength; | |
70 | wait_queue_head_t read_queue; | |
71 | struct timer_list readtimer; | |
72 | __u8 rdsin, rdsout, rdsstat; | |
73 | unsigned char rdsbuf[RDS_BUFFER]; | |
74 | struct mutex lock; | |
75 | int reading; | |
c1c4fd3e DL |
76 | }; |
77 | ||
bec2aec5 | 78 | static struct cadet cadet_card; |
1da177e4 LT |
79 | |
80 | /* | |
81 | * Signal Strength Threshold Values | |
4286c6f6 | 82 | * The V4L API spec does not define any particular unit for the signal |
1da177e4 LT |
83 | * strength value. These values are in microvolts of RF at the tuner's input. |
84 | */ | |
bec2aec5 HV |
85 | static __u16 sigtable[2][4] = { |
86 | { 5, 10, 30, 150 }, | |
87 | { 28, 40, 63, 1000 } | |
88 | }; | |
1da177e4 | 89 | |
1da177e4 | 90 | |
bec2aec5 | 91 | static int cadet_getstereo(struct cadet *dev) |
1da177e4 | 92 | { |
c0c7fa09 | 93 | int ret = V4L2_TUNER_SUB_MONO; |
bec2aec5 HV |
94 | |
95 | if (dev->curtuner != 0) /* Only FM has stereo capability! */ | |
c0c7fa09 | 96 | return V4L2_TUNER_SUB_MONO; |
1da177e4 | 97 | |
bec2aec5 HV |
98 | mutex_lock(&dev->lock); |
99 | outb(7, dev->io); /* Select tuner control */ | |
100 | if ((inb(dev->io + 1) & 0x40) == 0) | |
c0c7fa09 | 101 | ret = V4L2_TUNER_SUB_STEREO; |
bec2aec5 | 102 | mutex_unlock(&dev->lock); |
4286c6f6 | 103 | return ret; |
1da177e4 LT |
104 | } |
105 | ||
bec2aec5 | 106 | static unsigned cadet_gettune(struct cadet *dev) |
1da177e4 | 107 | { |
bec2aec5 HV |
108 | int curvol, i; |
109 | unsigned fifo = 0; | |
1da177e4 | 110 | |
4286c6f6 MCC |
111 | /* |
112 | * Prepare for read | |
113 | */ | |
1da177e4 | 114 | |
bec2aec5 | 115 | mutex_lock(&dev->lock); |
4286c6f6 | 116 | |
bec2aec5 HV |
117 | outb(7, dev->io); /* Select tuner control */ |
118 | curvol = inb(dev->io + 1); /* Save current volume/mute setting */ | |
119 | outb(0x00, dev->io + 1); /* Ensure WRITE-ENABLE is LOW */ | |
120 | dev->tunestat = 0xffff; | |
1da177e4 | 121 | |
4286c6f6 MCC |
122 | /* |
123 | * Read the shift register | |
124 | */ | |
bec2aec5 HV |
125 | for (i = 0; i < 25; i++) { |
126 | fifo = (fifo << 1) | ((inb(dev->io + 1) >> 7) & 0x01); | |
127 | if (i < 24) { | |
128 | outb(0x01, dev->io + 1); | |
129 | dev->tunestat &= inb(dev->io + 1); | |
130 | outb(0x00, dev->io + 1); | |
4286c6f6 MCC |
131 | } |
132 | } | |
133 | ||
134 | /* | |
135 | * Restore volume/mute setting | |
136 | */ | |
bec2aec5 HV |
137 | outb(curvol, dev->io + 1); |
138 | mutex_unlock(&dev->lock); | |
1da177e4 LT |
139 | |
140 | return fifo; | |
141 | } | |
142 | ||
bec2aec5 | 143 | static unsigned cadet_getfreq(struct cadet *dev) |
1da177e4 | 144 | { |
4286c6f6 | 145 | int i; |
bec2aec5 | 146 | unsigned freq = 0, test, fifo = 0; |
1da177e4 LT |
147 | |
148 | /* | |
149 | * Read current tuning | |
150 | */ | |
bec2aec5 | 151 | fifo = cadet_gettune(dev); |
1da177e4 | 152 | |
4286c6f6 MCC |
153 | /* |
154 | * Convert to actual frequency | |
155 | */ | |
bec2aec5 HV |
156 | if (dev->curtuner == 0) { /* FM */ |
157 | test = 12500; | |
158 | for (i = 0; i < 14; i++) { | |
159 | if ((fifo & 0x01) != 0) | |
160 | freq += test; | |
161 | test = test << 1; | |
162 | fifo = fifo >> 1; | |
4286c6f6 | 163 | } |
bec2aec5 HV |
164 | freq -= 10700000; /* IF frequency is 10.7 MHz */ |
165 | freq = (freq * 16) / 1000000; /* Make it 1/16 MHz */ | |
1da177e4 | 166 | } |
bec2aec5 HV |
167 | if (dev->curtuner == 1) /* AM */ |
168 | freq = ((fifo & 0x7fff) - 2010) * 16; | |
1da177e4 | 169 | |
4286c6f6 | 170 | return freq; |
1da177e4 LT |
171 | } |
172 | ||
bec2aec5 | 173 | static void cadet_settune(struct cadet *dev, unsigned fifo) |
1da177e4 | 174 | { |
4286c6f6 MCC |
175 | int i; |
176 | unsigned test; | |
1da177e4 | 177 | |
bec2aec5 | 178 | mutex_lock(&dev->lock); |
4286c6f6 | 179 | |
bec2aec5 | 180 | outb(7, dev->io); /* Select tuner control */ |
1da177e4 LT |
181 | /* |
182 | * Write the shift register | |
183 | */ | |
bec2aec5 HV |
184 | test = 0; |
185 | test = (fifo >> 23) & 0x02; /* Align data for SDO */ | |
186 | test |= 0x1c; /* SDM=1, SWE=1, SEN=1, SCK=0 */ | |
187 | outb(7, dev->io); /* Select tuner control */ | |
188 | outb(test, dev->io + 1); /* Initialize for write */ | |
189 | for (i = 0; i < 25; i++) { | |
190 | test |= 0x01; /* Toggle SCK High */ | |
191 | outb(test, dev->io + 1); | |
192 | test &= 0xfe; /* Toggle SCK Low */ | |
193 | outb(test, dev->io + 1); | |
194 | fifo = fifo << 1; /* Prepare the next bit */ | |
195 | test = 0x1c | ((fifo >> 23) & 0x02); | |
196 | outb(test, dev->io + 1); | |
1da177e4 | 197 | } |
bec2aec5 | 198 | mutex_unlock(&dev->lock); |
1da177e4 LT |
199 | } |
200 | ||
bec2aec5 | 201 | static void cadet_setfreq(struct cadet *dev, unsigned freq) |
1da177e4 | 202 | { |
4286c6f6 | 203 | unsigned fifo; |
bec2aec5 | 204 | int i, j, test; |
4286c6f6 | 205 | int curvol; |
1da177e4 | 206 | |
4286c6f6 MCC |
207 | /* |
208 | * Formulate a fifo command | |
209 | */ | |
bec2aec5 HV |
210 | fifo = 0; |
211 | if (dev->curtuner == 0) { /* FM */ | |
212 | test = 102400; | |
213 | freq = (freq * 1000) / 16; /* Make it kHz */ | |
214 | freq += 10700; /* IF is 10700 kHz */ | |
215 | for (i = 0; i < 14; i++) { | |
216 | fifo = fifo << 1; | |
217 | if (freq >= test) { | |
218 | fifo |= 0x01; | |
219 | freq -= test; | |
4286c6f6 | 220 | } |
bec2aec5 | 221 | test = test >> 1; |
4286c6f6 | 222 | } |
1da177e4 | 223 | } |
bec2aec5 HV |
224 | if (dev->curtuner == 1) { /* AM */ |
225 | fifo = (freq / 16) + 2010; /* Make it kHz */ | |
226 | fifo |= 0x100000; /* Select AM Band */ | |
1da177e4 LT |
227 | } |
228 | ||
4286c6f6 MCC |
229 | /* |
230 | * Save current volume/mute setting | |
231 | */ | |
1da177e4 | 232 | |
bec2aec5 HV |
233 | mutex_lock(&dev->lock); |
234 | outb(7, dev->io); /* Select tuner control */ | |
235 | curvol = inb(dev->io + 1); | |
236 | mutex_unlock(&dev->lock); | |
1da177e4 LT |
237 | |
238 | /* | |
239 | * Tune the card | |
240 | */ | |
bec2aec5 HV |
241 | for (j = 3; j > -1; j--) { |
242 | cadet_settune(dev, fifo | (j << 16)); | |
4286c6f6 | 243 | |
bec2aec5 HV |
244 | mutex_lock(&dev->lock); |
245 | outb(7, dev->io); /* Select tuner control */ | |
246 | outb(curvol, dev->io + 1); | |
247 | mutex_unlock(&dev->lock); | |
4286c6f6 | 248 | |
1da177e4 LT |
249 | msleep(100); |
250 | ||
bec2aec5 HV |
251 | cadet_gettune(dev); |
252 | if ((dev->tunestat & 0x40) == 0) { /* Tuned */ | |
253 | dev->sigstrength = sigtable[dev->curtuner][j]; | |
1da177e4 LT |
254 | return; |
255 | } | |
256 | } | |
bec2aec5 | 257 | dev->sigstrength = 0; |
1da177e4 LT |
258 | } |
259 | ||
260 | ||
bec2aec5 | 261 | static int cadet_getvol(struct cadet *dev) |
1da177e4 LT |
262 | { |
263 | int ret = 0; | |
4286c6f6 | 264 | |
bec2aec5 | 265 | mutex_lock(&dev->lock); |
4286c6f6 | 266 | |
bec2aec5 HV |
267 | outb(7, dev->io); /* Select tuner control */ |
268 | if ((inb(dev->io + 1) & 0x20) != 0) | |
4286c6f6 MCC |
269 | ret = 0xffff; |
270 | ||
bec2aec5 | 271 | mutex_unlock(&dev->lock); |
4286c6f6 | 272 | return ret; |
1da177e4 LT |
273 | } |
274 | ||
275 | ||
bec2aec5 | 276 | static void cadet_setvol(struct cadet *dev, int vol) |
1da177e4 | 277 | { |
bec2aec5 HV |
278 | mutex_lock(&dev->lock); |
279 | outb(7, dev->io); /* Select tuner control */ | |
280 | if (vol > 0) | |
281 | outb(0x20, dev->io + 1); | |
4286c6f6 | 282 | else |
bec2aec5 HV |
283 | outb(0x00, dev->io + 1); |
284 | mutex_unlock(&dev->lock); | |
4286c6f6 | 285 | } |
1da177e4 | 286 | |
bec2aec5 | 287 | static void cadet_handler(unsigned long data) |
1da177e4 | 288 | { |
bec2aec5 | 289 | struct cadet *dev = (void *)data; |
1da177e4 | 290 | |
bec2aec5 HV |
291 | /* Service the RDS fifo */ |
292 | if (mutex_trylock(&dev->lock)) { | |
293 | outb(0x3, dev->io); /* Select RDS Decoder Control */ | |
294 | if ((inb(dev->io + 1) & 0x20) != 0) | |
4286c6f6 | 295 | printk(KERN_CRIT "cadet: RDS fifo overflow\n"); |
bec2aec5 HV |
296 | outb(0x80, dev->io); /* Select RDS fifo */ |
297 | while ((inb(dev->io) & 0x80) != 0) { | |
298 | dev->rdsbuf[dev->rdsin] = inb(dev->io + 1); | |
299 | if (dev->rdsin == dev->rdsout) | |
4286c6f6 | 300 | printk(KERN_WARNING "cadet: RDS buffer overflow\n"); |
1da177e4 | 301 | else |
bec2aec5 | 302 | dev->rdsin++; |
1da177e4 | 303 | } |
bec2aec5 | 304 | mutex_unlock(&dev->lock); |
1da177e4 LT |
305 | } |
306 | ||
307 | /* | |
308 | * Service pending read | |
309 | */ | |
bec2aec5 HV |
310 | if (dev->rdsin != dev->rdsout) |
311 | wake_up_interruptible(&dev->read_queue); | |
1da177e4 | 312 | |
4286c6f6 | 313 | /* |
1da177e4 LT |
314 | * Clean up and exit |
315 | */ | |
bec2aec5 HV |
316 | init_timer(&dev->readtimer); |
317 | dev->readtimer.function = cadet_handler; | |
318 | dev->readtimer.data = (unsigned long)0; | |
319 | dev->readtimer.expires = jiffies + msecs_to_jiffies(50); | |
320 | add_timer(&dev->readtimer); | |
1da177e4 LT |
321 | } |
322 | ||
323 | ||
bec2aec5 | 324 | static ssize_t cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
1da177e4 | 325 | { |
bec2aec5 | 326 | struct cadet *dev = video_drvdata(file); |
1da177e4 | 327 | unsigned char readbuf[RDS_BUFFER]; |
bec2aec5 HV |
328 | int i = 0; |
329 | ||
330 | if (dev->rdsstat == 0) { | |
331 | mutex_lock(&dev->lock); | |
332 | dev->rdsstat = 1; | |
333 | outb(0x80, dev->io); /* Select RDS fifo */ | |
334 | mutex_unlock(&dev->lock); | |
335 | init_timer(&dev->readtimer); | |
336 | dev->readtimer.function = cadet_handler; | |
337 | dev->readtimer.data = (unsigned long)dev; | |
338 | dev->readtimer.expires = jiffies + msecs_to_jiffies(50); | |
339 | add_timer(&dev->readtimer); | |
1da177e4 | 340 | } |
bec2aec5 | 341 | if (dev->rdsin == dev->rdsout) { |
4286c6f6 MCC |
342 | if (file->f_flags & O_NONBLOCK) |
343 | return -EWOULDBLOCK; | |
bec2aec5 | 344 | interruptible_sleep_on(&dev->read_queue); |
4286c6f6 | 345 | } |
bec2aec5 HV |
346 | while (i < count && dev->rdsin != dev->rdsout) |
347 | readbuf[i++] = dev->rdsbuf[dev->rdsout++]; | |
1da177e4 | 348 | |
bec2aec5 | 349 | if (copy_to_user(data, readbuf, i)) |
4286c6f6 | 350 | return -EFAULT; |
1da177e4 LT |
351 | return i; |
352 | } | |
353 | ||
354 | ||
c1c4fd3e DL |
355 | static int vidioc_querycap(struct file *file, void *priv, |
356 | struct v4l2_capability *v) | |
357 | { | |
bec2aec5 HV |
358 | strlcpy(v->driver, "ADS Cadet", sizeof(v->driver)); |
359 | strlcpy(v->card, "ADS Cadet", sizeof(v->card)); | |
360 | strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); | |
c1c4fd3e | 361 | v->version = CADET_VERSION; |
8e280f24 HV |
362 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO | |
363 | V4L2_CAP_READWRITE | V4L2_CAP_RDS_CAPTURE; | |
c1c4fd3e DL |
364 | return 0; |
365 | } | |
1da177e4 | 366 | |
c1c4fd3e DL |
367 | static int vidioc_g_tuner(struct file *file, void *priv, |
368 | struct v4l2_tuner *v) | |
1da177e4 | 369 | { |
bec2aec5 HV |
370 | struct cadet *dev = video_drvdata(file); |
371 | ||
c1c4fd3e DL |
372 | v->type = V4L2_TUNER_RADIO; |
373 | switch (v->index) { | |
374 | case 0: | |
bec2aec5 | 375 | strlcpy(v->name, "FM", sizeof(v->name)); |
8e280f24 | 376 | v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS; |
c1c4fd3e DL |
377 | v->rangelow = 1400; /* 87.5 MHz */ |
378 | v->rangehigh = 1728; /* 108.0 MHz */ | |
bec2aec5 HV |
379 | v->rxsubchans = cadet_getstereo(dev); |
380 | switch (v->rxsubchans) { | |
c1c4fd3e DL |
381 | case V4L2_TUNER_SUB_MONO: |
382 | v->audmode = V4L2_TUNER_MODE_MONO; | |
383 | break; | |
384 | case V4L2_TUNER_SUB_STEREO: | |
385 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
386 | break; | |
bec2aec5 HV |
387 | default: |
388 | break; | |
1da177e4 | 389 | } |
8e280f24 | 390 | v->rxsubchans |= V4L2_TUNER_SUB_RDS; |
c1c4fd3e DL |
391 | break; |
392 | case 1: | |
bec2aec5 | 393 | strlcpy(v->name, "AM", sizeof(v->name)); |
c1c4fd3e DL |
394 | v->capability = V4L2_TUNER_CAP_LOW; |
395 | v->rangelow = 8320; /* 520 kHz */ | |
396 | v->rangehigh = 26400; /* 1650 kHz */ | |
397 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
398 | v->audmode = V4L2_TUNER_MODE_MONO; | |
399 | break; | |
400 | default: | |
401 | return -EINVAL; | |
402 | } | |
bec2aec5 | 403 | v->signal = dev->sigstrength; /* We might need to modify scaling of this */ |
c1c4fd3e DL |
404 | return 0; |
405 | } | |
c0c7fa09 | 406 | |
c1c4fd3e DL |
407 | static int vidioc_s_tuner(struct file *file, void *priv, |
408 | struct v4l2_tuner *v) | |
409 | { | |
bec2aec5 HV |
410 | struct cadet *dev = video_drvdata(file); |
411 | ||
412 | if (v->index != 0 && v->index != 1) | |
c1c4fd3e | 413 | return -EINVAL; |
bec2aec5 | 414 | dev->curtuner = v->index; |
c1c4fd3e DL |
415 | return 0; |
416 | } | |
c0c7fa09 | 417 | |
c1c4fd3e DL |
418 | static int vidioc_g_frequency(struct file *file, void *priv, |
419 | struct v4l2_frequency *f) | |
420 | { | |
bec2aec5 HV |
421 | struct cadet *dev = video_drvdata(file); |
422 | ||
423 | f->tuner = dev->curtuner; | |
c1c4fd3e | 424 | f->type = V4L2_TUNER_RADIO; |
bec2aec5 | 425 | f->frequency = cadet_getfreq(dev); |
c1c4fd3e DL |
426 | return 0; |
427 | } | |
428 | ||
429 | ||
430 | static int vidioc_s_frequency(struct file *file, void *priv, | |
431 | struct v4l2_frequency *f) | |
432 | { | |
bec2aec5 HV |
433 | struct cadet *dev = video_drvdata(file); |
434 | ||
c1c4fd3e DL |
435 | if (f->type != V4L2_TUNER_RADIO) |
436 | return -EINVAL; | |
bec2aec5 | 437 | if (dev->curtuner == 0 && (f->frequency < 1400 || f->frequency > 1728)) |
c1c4fd3e | 438 | return -EINVAL; |
bec2aec5 | 439 | if (dev->curtuner == 1 && (f->frequency < 8320 || f->frequency > 26400)) |
c1c4fd3e | 440 | return -EINVAL; |
bec2aec5 | 441 | cadet_setfreq(dev, f->frequency); |
c1c4fd3e DL |
442 | return 0; |
443 | } | |
444 | ||
445 | static int vidioc_queryctrl(struct file *file, void *priv, | |
446 | struct v4l2_queryctrl *qc) | |
447 | { | |
bec2aec5 HV |
448 | switch (qc->id) { |
449 | case V4L2_CID_AUDIO_MUTE: | |
450 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
451 | case V4L2_CID_AUDIO_VOLUME: | |
452 | return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff); | |
c1c4fd3e DL |
453 | } |
454 | return -EINVAL; | |
455 | } | |
c0c7fa09 | 456 | |
c1c4fd3e DL |
457 | static int vidioc_g_ctrl(struct file *file, void *priv, |
458 | struct v4l2_control *ctrl) | |
459 | { | |
bec2aec5 HV |
460 | struct cadet *dev = video_drvdata(file); |
461 | ||
462 | switch (ctrl->id) { | |
c1c4fd3e | 463 | case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */ |
bec2aec5 | 464 | ctrl->value = (cadet_getvol(dev) == 0); |
c1c4fd3e DL |
465 | break; |
466 | case V4L2_CID_AUDIO_VOLUME: | |
bec2aec5 | 467 | ctrl->value = cadet_getvol(dev); |
c1c4fd3e DL |
468 | break; |
469 | default: | |
470 | return -EINVAL; | |
1da177e4 | 471 | } |
c1c4fd3e | 472 | return 0; |
1da177e4 LT |
473 | } |
474 | ||
c1c4fd3e DL |
475 | static int vidioc_s_ctrl(struct file *file, void *priv, |
476 | struct v4l2_control *ctrl) | |
1da177e4 | 477 | { |
bec2aec5 HV |
478 | struct cadet *dev = video_drvdata(file); |
479 | ||
c1c4fd3e DL |
480 | switch (ctrl->id){ |
481 | case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */ | |
482 | if (ctrl->value) | |
bec2aec5 | 483 | cadet_setvol(dev, 0); |
c1c4fd3e | 484 | else |
bec2aec5 | 485 | cadet_setvol(dev, 0xffff); |
c1c4fd3e DL |
486 | break; |
487 | case V4L2_CID_AUDIO_VOLUME: | |
bec2aec5 | 488 | cadet_setvol(dev, ctrl->value); |
c1c4fd3e DL |
489 | break; |
490 | default: | |
491 | return -EINVAL; | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | ||
c1c4fd3e DL |
496 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
497 | { | |
498 | *i = 0; | |
499 | return 0; | |
500 | } | |
501 | ||
502 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
503 | { | |
bec2aec5 HV |
504 | return i ? -EINVAL : 0; |
505 | } | |
506 | ||
507 | static int vidioc_g_audio(struct file *file, void *priv, | |
508 | struct v4l2_audio *a) | |
509 | { | |
510 | a->index = 0; | |
511 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
512 | a->capability = V4L2_AUDCAP_STEREO; | |
c1c4fd3e DL |
513 | return 0; |
514 | } | |
515 | ||
516 | static int vidioc_s_audio(struct file *file, void *priv, | |
517 | struct v4l2_audio *a) | |
518 | { | |
bec2aec5 | 519 | return a->index ? -EINVAL : 0; |
1da177e4 LT |
520 | } |
521 | ||
bec2aec5 | 522 | static int cadet_open(struct file *file) |
1da177e4 | 523 | { |
bec2aec5 HV |
524 | struct cadet *dev = video_drvdata(file); |
525 | ||
526 | dev->users++; | |
527 | if (1 == dev->users) | |
528 | init_waitqueue_head(&dev->read_queue); | |
1da177e4 LT |
529 | return 0; |
530 | } | |
531 | ||
bec2aec5 | 532 | static int cadet_release(struct file *file) |
1da177e4 | 533 | { |
bec2aec5 HV |
534 | struct cadet *dev = video_drvdata(file); |
535 | ||
536 | dev->users--; | |
537 | if (0 == dev->users) { | |
538 | del_timer_sync(&dev->readtimer); | |
539 | dev->rdsstat = 0; | |
c0c7fa09 HK |
540 | } |
541 | return 0; | |
542 | } | |
543 | ||
bec2aec5 | 544 | static unsigned int cadet_poll(struct file *file, struct poll_table_struct *wait) |
c0c7fa09 | 545 | { |
bec2aec5 HV |
546 | struct cadet *dev = video_drvdata(file); |
547 | ||
548 | poll_wait(file, &dev->read_queue, wait); | |
549 | if (dev->rdsin != dev->rdsout) | |
c0c7fa09 | 550 | return POLLIN | POLLRDNORM; |
1da177e4 LT |
551 | return 0; |
552 | } | |
553 | ||
554 | ||
bec43661 | 555 | static const struct v4l2_file_operations cadet_fops = { |
1da177e4 LT |
556 | .owner = THIS_MODULE, |
557 | .open = cadet_open, | |
558 | .release = cadet_release, | |
559 | .read = cadet_read, | |
c1c4fd3e | 560 | .ioctl = video_ioctl2, |
c0c7fa09 | 561 | .poll = cadet_poll, |
1da177e4 LT |
562 | }; |
563 | ||
a399810c | 564 | static const struct v4l2_ioctl_ops cadet_ioctl_ops = { |
c1c4fd3e DL |
565 | .vidioc_querycap = vidioc_querycap, |
566 | .vidioc_g_tuner = vidioc_g_tuner, | |
567 | .vidioc_s_tuner = vidioc_s_tuner, | |
568 | .vidioc_g_frequency = vidioc_g_frequency, | |
569 | .vidioc_s_frequency = vidioc_s_frequency, | |
570 | .vidioc_queryctrl = vidioc_queryctrl, | |
571 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
572 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
573 | .vidioc_g_audio = vidioc_g_audio, | |
574 | .vidioc_s_audio = vidioc_s_audio, | |
575 | .vidioc_g_input = vidioc_g_input, | |
576 | .vidioc_s_input = vidioc_s_input, | |
1da177e4 LT |
577 | }; |
578 | ||
044dfc99 BH |
579 | #ifdef CONFIG_PNP |
580 | ||
1da177e4 LT |
581 | static struct pnp_device_id cadet_pnp_devices[] = { |
582 | /* ADS Cadet AM/FM Radio Card */ | |
583 | {.id = "MSM0c24", .driver_data = 0}, | |
584 | {.id = ""} | |
585 | }; | |
586 | ||
587 | MODULE_DEVICE_TABLE(pnp, cadet_pnp_devices); | |
588 | ||
bec2aec5 | 589 | static int cadet_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) |
1da177e4 LT |
590 | { |
591 | if (!dev) | |
592 | return -ENODEV; | |
593 | /* only support one device */ | |
594 | if (io > 0) | |
595 | return -EBUSY; | |
596 | ||
bec2aec5 | 597 | if (!pnp_port_valid(dev, 0)) |
1da177e4 | 598 | return -ENODEV; |
1da177e4 LT |
599 | |
600 | io = pnp_port_start(dev, 0); | |
601 | ||
bec2aec5 | 602 | printk(KERN_INFO "radio-cadet: PnP reports device at %#x\n", io); |
1da177e4 LT |
603 | |
604 | return io; | |
605 | } | |
606 | ||
607 | static struct pnp_driver cadet_pnp_driver = { | |
608 | .name = "radio-cadet", | |
609 | .id_table = cadet_pnp_devices, | |
610 | .probe = cadet_pnp_probe, | |
611 | .remove = NULL, | |
612 | }; | |
613 | ||
044dfc99 BH |
614 | #else |
615 | static struct pnp_driver cadet_pnp_driver; | |
616 | #endif | |
617 | ||
bec2aec5 | 618 | static void cadet_probe(struct cadet *dev) |
1da177e4 | 619 | { |
bec2aec5 | 620 | static int iovals[8] = { 0x330, 0x332, 0x334, 0x336, 0x338, 0x33a, 0x33c, 0x33e }; |
1da177e4 LT |
621 | int i; |
622 | ||
bec2aec5 HV |
623 | for (i = 0; i < 8; i++) { |
624 | dev->io = iovals[i]; | |
625 | if (request_region(dev->io, 2, "cadet-probe")) { | |
626 | cadet_setfreq(dev, 1410); | |
627 | if (cadet_getfreq(dev) == 1410) { | |
628 | release_region(dev->io, 2); | |
629 | return; | |
1da177e4 | 630 | } |
bec2aec5 | 631 | release_region(dev->io, 2); |
1da177e4 LT |
632 | } |
633 | } | |
bec2aec5 | 634 | dev->io = -1; |
1da177e4 LT |
635 | } |
636 | ||
4286c6f6 | 637 | /* |
1da177e4 LT |
638 | * io should only be set if the user has used something like |
639 | * isapnp (the userspace program) to initialize this card for us | |
640 | */ | |
641 | ||
642 | static int __init cadet_init(void) | |
643 | { | |
bec2aec5 HV |
644 | struct cadet *dev = &cadet_card; |
645 | struct v4l2_device *v4l2_dev = &dev->v4l2_dev; | |
646 | int res; | |
4286c6f6 | 647 | |
bec2aec5 HV |
648 | strlcpy(v4l2_dev->name, "cadet", sizeof(v4l2_dev->name)); |
649 | mutex_init(&dev->lock); | |
650 | ||
651 | /* If a probe was requested then probe ISAPnP first (safest) */ | |
1da177e4 LT |
652 | if (io < 0) |
653 | pnp_register_driver(&cadet_pnp_driver); | |
bec2aec5 | 654 | dev->io = io; |
1da177e4 | 655 | |
bec2aec5 HV |
656 | /* If that fails then probe unsafely if probe is requested */ |
657 | if (dev->io < 0) | |
658 | cadet_probe(dev); | |
4286c6f6 | 659 | |
bec2aec5 HV |
660 | /* Else we bail out */ |
661 | if (dev->io < 0) { | |
4286c6f6 | 662 | #ifdef MODULE |
b24c20cc HV |
663 | v4l2_err(v4l2_dev, "you must set an I/O address with io=0x330, 0x332, 0x334,\n"); |
664 | v4l2_err(v4l2_dev, "0x336, 0x338, 0x33a, 0x33c or 0x33e\n"); | |
1da177e4 | 665 | #endif |
4286c6f6 | 666 | goto fail; |
1da177e4 | 667 | } |
bec2aec5 HV |
668 | if (!request_region(dev->io, 2, "cadet")) |
669 | goto fail; | |
670 | ||
671 | res = v4l2_device_register(NULL, v4l2_dev); | |
672 | if (res < 0) { | |
673 | release_region(dev->io, 2); | |
674 | v4l2_err(v4l2_dev, "could not register v4l2_device\n"); | |
1da177e4 | 675 | goto fail; |
bec2aec5 HV |
676 | } |
677 | ||
678 | strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); | |
679 | dev->vdev.v4l2_dev = v4l2_dev; | |
680 | dev->vdev.fops = &cadet_fops; | |
681 | dev->vdev.ioctl_ops = &cadet_ioctl_ops; | |
682 | dev->vdev.release = video_device_release_empty; | |
683 | video_set_drvdata(&dev->vdev, dev); | |
684 | ||
685 | if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { | |
686 | v4l2_device_unregister(v4l2_dev); | |
687 | release_region(dev->io, 2); | |
1da177e4 LT |
688 | goto fail; |
689 | } | |
bec2aec5 | 690 | v4l2_info(v4l2_dev, "ADS Cadet Radio Card at 0x%x\n", dev->io); |
1da177e4 LT |
691 | return 0; |
692 | fail: | |
693 | pnp_unregister_driver(&cadet_pnp_driver); | |
bec2aec5 | 694 | return -ENODEV; |
1da177e4 LT |
695 | } |
696 | ||
bec2aec5 | 697 | static void __exit cadet_exit(void) |
1da177e4 | 698 | { |
bec2aec5 HV |
699 | struct cadet *dev = &cadet_card; |
700 | ||
701 | video_unregister_device(&dev->vdev); | |
702 | v4l2_device_unregister(&dev->v4l2_dev); | |
703 | release_region(dev->io, 2); | |
1da177e4 LT |
704 | pnp_unregister_driver(&cadet_pnp_driver); |
705 | } | |
706 | ||
707 | module_init(cadet_init); | |
bec2aec5 | 708 | module_exit(cadet_exit); |
1da177e4 | 709 |