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 | ||
33 | #include <linux/module.h> /* Modules */ | |
34 | #include <linux/init.h> /* Initdata */ | |
fb911ee8 | 35 | #include <linux/ioport.h> /* request_region */ |
1da177e4 | 36 | #include <linux/delay.h> /* udelay */ |
c0c7fa09 | 37 | #include <linux/videodev2.h> /* V4L2 API defs */ |
1da177e4 LT |
38 | #include <linux/param.h> |
39 | #include <linux/pnp.h> | |
a99bbaf5 | 40 | #include <linux/sched.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"); | |
29834c1a | 48 | MODULE_VERSION("0.3.4"); |
bec2aec5 HV |
49 | |
50 | static int io = -1; /* default to isapnp activation */ | |
51 | static int radio_nr = -1; | |
52 | ||
53 | module_param(io, int, 0); | |
54 | MODULE_PARM_DESC(io, "I/O address of Cadet card (0x330,0x332,0x334,0x336,0x338,0x33a,0x33c,0x33e)"); | |
55 | module_param(radio_nr, int, 0); | |
56 | ||
1da177e4 | 57 | #define RDS_BUFFER 256 |
c0c7fa09 HK |
58 | #define RDS_RX_FLAG 1 |
59 | #define MBS_RX_FLAG 2 | |
60 | ||
bec2aec5 HV |
61 | struct cadet { |
62 | struct v4l2_device v4l2_dev; | |
63 | struct video_device vdev; | |
64 | int io; | |
65 | int users; | |
66 | int curtuner; | |
67 | int tunestat; | |
68 | int sigstrength; | |
69 | wait_queue_head_t read_queue; | |
70 | struct timer_list readtimer; | |
71 | __u8 rdsin, rdsout, rdsstat; | |
72 | unsigned char rdsbuf[RDS_BUFFER]; | |
73 | struct mutex lock; | |
74 | int reading; | |
c1c4fd3e DL |
75 | }; |
76 | ||
bec2aec5 | 77 | static struct cadet cadet_card; |
1da177e4 LT |
78 | |
79 | /* | |
80 | * Signal Strength Threshold Values | |
4286c6f6 | 81 | * The V4L API spec does not define any particular unit for the signal |
1da177e4 LT |
82 | * strength value. These values are in microvolts of RF at the tuner's input. |
83 | */ | |
bec2aec5 HV |
84 | static __u16 sigtable[2][4] = { |
85 | { 5, 10, 30, 150 }, | |
86 | { 28, 40, 63, 1000 } | |
87 | }; | |
1da177e4 | 88 | |
1da177e4 | 89 | |
bec2aec5 | 90 | static int cadet_getstereo(struct cadet *dev) |
1da177e4 | 91 | { |
c0c7fa09 | 92 | int ret = V4L2_TUNER_SUB_MONO; |
bec2aec5 HV |
93 | |
94 | if (dev->curtuner != 0) /* Only FM has stereo capability! */ | |
c0c7fa09 | 95 | return V4L2_TUNER_SUB_MONO; |
1da177e4 | 96 | |
bec2aec5 HV |
97 | mutex_lock(&dev->lock); |
98 | outb(7, dev->io); /* Select tuner control */ | |
99 | if ((inb(dev->io + 1) & 0x40) == 0) | |
c0c7fa09 | 100 | ret = V4L2_TUNER_SUB_STEREO; |
bec2aec5 | 101 | mutex_unlock(&dev->lock); |
4286c6f6 | 102 | return ret; |
1da177e4 LT |
103 | } |
104 | ||
bec2aec5 | 105 | static unsigned cadet_gettune(struct cadet *dev) |
1da177e4 | 106 | { |
bec2aec5 HV |
107 | int curvol, i; |
108 | unsigned fifo = 0; | |
1da177e4 | 109 | |
4286c6f6 MCC |
110 | /* |
111 | * Prepare for read | |
112 | */ | |
1da177e4 | 113 | |
bec2aec5 | 114 | mutex_lock(&dev->lock); |
4286c6f6 | 115 | |
bec2aec5 HV |
116 | outb(7, dev->io); /* Select tuner control */ |
117 | curvol = inb(dev->io + 1); /* Save current volume/mute setting */ | |
118 | outb(0x00, dev->io + 1); /* Ensure WRITE-ENABLE is LOW */ | |
119 | dev->tunestat = 0xffff; | |
1da177e4 | 120 | |
4286c6f6 MCC |
121 | /* |
122 | * Read the shift register | |
123 | */ | |
bec2aec5 HV |
124 | for (i = 0; i < 25; i++) { |
125 | fifo = (fifo << 1) | ((inb(dev->io + 1) >> 7) & 0x01); | |
126 | if (i < 24) { | |
127 | outb(0x01, dev->io + 1); | |
128 | dev->tunestat &= inb(dev->io + 1); | |
129 | outb(0x00, dev->io + 1); | |
4286c6f6 MCC |
130 | } |
131 | } | |
132 | ||
133 | /* | |
134 | * Restore volume/mute setting | |
135 | */ | |
bec2aec5 HV |
136 | outb(curvol, dev->io + 1); |
137 | mutex_unlock(&dev->lock); | |
1da177e4 LT |
138 | |
139 | return fifo; | |
140 | } | |
141 | ||
bec2aec5 | 142 | static unsigned cadet_getfreq(struct cadet *dev) |
1da177e4 | 143 | { |
4286c6f6 | 144 | int i; |
bec2aec5 | 145 | unsigned freq = 0, test, fifo = 0; |
1da177e4 LT |
146 | |
147 | /* | |
148 | * Read current tuning | |
149 | */ | |
bec2aec5 | 150 | fifo = cadet_gettune(dev); |
1da177e4 | 151 | |
4286c6f6 MCC |
152 | /* |
153 | * Convert to actual frequency | |
154 | */ | |
bec2aec5 HV |
155 | if (dev->curtuner == 0) { /* FM */ |
156 | test = 12500; | |
157 | for (i = 0; i < 14; i++) { | |
158 | if ((fifo & 0x01) != 0) | |
159 | freq += test; | |
160 | test = test << 1; | |
161 | fifo = fifo >> 1; | |
4286c6f6 | 162 | } |
bec2aec5 HV |
163 | freq -= 10700000; /* IF frequency is 10.7 MHz */ |
164 | freq = (freq * 16) / 1000000; /* Make it 1/16 MHz */ | |
1da177e4 | 165 | } |
bec2aec5 HV |
166 | if (dev->curtuner == 1) /* AM */ |
167 | freq = ((fifo & 0x7fff) - 2010) * 16; | |
1da177e4 | 168 | |
4286c6f6 | 169 | return freq; |
1da177e4 LT |
170 | } |
171 | ||
bec2aec5 | 172 | static void cadet_settune(struct cadet *dev, unsigned fifo) |
1da177e4 | 173 | { |
4286c6f6 MCC |
174 | int i; |
175 | unsigned test; | |
1da177e4 | 176 | |
bec2aec5 | 177 | mutex_lock(&dev->lock); |
4286c6f6 | 178 | |
bec2aec5 | 179 | outb(7, dev->io); /* Select tuner control */ |
1da177e4 LT |
180 | /* |
181 | * Write the shift register | |
182 | */ | |
bec2aec5 HV |
183 | test = 0; |
184 | test = (fifo >> 23) & 0x02; /* Align data for SDO */ | |
185 | test |= 0x1c; /* SDM=1, SWE=1, SEN=1, SCK=0 */ | |
186 | outb(7, dev->io); /* Select tuner control */ | |
187 | outb(test, dev->io + 1); /* Initialize for write */ | |
188 | for (i = 0; i < 25; i++) { | |
189 | test |= 0x01; /* Toggle SCK High */ | |
190 | outb(test, dev->io + 1); | |
191 | test &= 0xfe; /* Toggle SCK Low */ | |
192 | outb(test, dev->io + 1); | |
193 | fifo = fifo << 1; /* Prepare the next bit */ | |
194 | test = 0x1c | ((fifo >> 23) & 0x02); | |
195 | outb(test, dev->io + 1); | |
1da177e4 | 196 | } |
bec2aec5 | 197 | mutex_unlock(&dev->lock); |
1da177e4 LT |
198 | } |
199 | ||
bec2aec5 | 200 | static void cadet_setfreq(struct cadet *dev, unsigned freq) |
1da177e4 | 201 | { |
4286c6f6 | 202 | unsigned fifo; |
bec2aec5 | 203 | int i, j, test; |
4286c6f6 | 204 | int curvol; |
1da177e4 | 205 | |
4286c6f6 MCC |
206 | /* |
207 | * Formulate a fifo command | |
208 | */ | |
bec2aec5 HV |
209 | fifo = 0; |
210 | if (dev->curtuner == 0) { /* FM */ | |
211 | test = 102400; | |
212 | freq = (freq * 1000) / 16; /* Make it kHz */ | |
213 | freq += 10700; /* IF is 10700 kHz */ | |
214 | for (i = 0; i < 14; i++) { | |
215 | fifo = fifo << 1; | |
216 | if (freq >= test) { | |
217 | fifo |= 0x01; | |
218 | freq -= test; | |
4286c6f6 | 219 | } |
bec2aec5 | 220 | test = test >> 1; |
4286c6f6 | 221 | } |
1da177e4 | 222 | } |
bec2aec5 HV |
223 | if (dev->curtuner == 1) { /* AM */ |
224 | fifo = (freq / 16) + 2010; /* Make it kHz */ | |
225 | fifo |= 0x100000; /* Select AM Band */ | |
1da177e4 LT |
226 | } |
227 | ||
4286c6f6 MCC |
228 | /* |
229 | * Save current volume/mute setting | |
230 | */ | |
1da177e4 | 231 | |
bec2aec5 HV |
232 | mutex_lock(&dev->lock); |
233 | outb(7, dev->io); /* Select tuner control */ | |
234 | curvol = inb(dev->io + 1); | |
235 | mutex_unlock(&dev->lock); | |
1da177e4 LT |
236 | |
237 | /* | |
238 | * Tune the card | |
239 | */ | |
bec2aec5 HV |
240 | for (j = 3; j > -1; j--) { |
241 | cadet_settune(dev, fifo | (j << 16)); | |
4286c6f6 | 242 | |
bec2aec5 HV |
243 | mutex_lock(&dev->lock); |
244 | outb(7, dev->io); /* Select tuner control */ | |
245 | outb(curvol, dev->io + 1); | |
246 | mutex_unlock(&dev->lock); | |
4286c6f6 | 247 | |
1da177e4 LT |
248 | msleep(100); |
249 | ||
bec2aec5 HV |
250 | cadet_gettune(dev); |
251 | if ((dev->tunestat & 0x40) == 0) { /* Tuned */ | |
252 | dev->sigstrength = sigtable[dev->curtuner][j]; | |
1da177e4 LT |
253 | return; |
254 | } | |
255 | } | |
bec2aec5 | 256 | dev->sigstrength = 0; |
1da177e4 LT |
257 | } |
258 | ||
259 | ||
bec2aec5 | 260 | static int cadet_getvol(struct cadet *dev) |
1da177e4 LT |
261 | { |
262 | int ret = 0; | |
4286c6f6 | 263 | |
bec2aec5 | 264 | mutex_lock(&dev->lock); |
4286c6f6 | 265 | |
bec2aec5 HV |
266 | outb(7, dev->io); /* Select tuner control */ |
267 | if ((inb(dev->io + 1) & 0x20) != 0) | |
4286c6f6 MCC |
268 | ret = 0xffff; |
269 | ||
bec2aec5 | 270 | mutex_unlock(&dev->lock); |
4286c6f6 | 271 | return ret; |
1da177e4 LT |
272 | } |
273 | ||
274 | ||
bec2aec5 | 275 | static void cadet_setvol(struct cadet *dev, int vol) |
1da177e4 | 276 | { |
bec2aec5 HV |
277 | mutex_lock(&dev->lock); |
278 | outb(7, dev->io); /* Select tuner control */ | |
279 | if (vol > 0) | |
280 | outb(0x20, dev->io + 1); | |
4286c6f6 | 281 | else |
bec2aec5 HV |
282 | outb(0x00, dev->io + 1); |
283 | mutex_unlock(&dev->lock); | |
4286c6f6 | 284 | } |
1da177e4 | 285 | |
bec2aec5 | 286 | static void cadet_handler(unsigned long data) |
1da177e4 | 287 | { |
bec2aec5 | 288 | struct cadet *dev = (void *)data; |
1da177e4 | 289 | |
bec2aec5 HV |
290 | /* Service the RDS fifo */ |
291 | if (mutex_trylock(&dev->lock)) { | |
292 | outb(0x3, dev->io); /* Select RDS Decoder Control */ | |
293 | if ((inb(dev->io + 1) & 0x20) != 0) | |
4286c6f6 | 294 | printk(KERN_CRIT "cadet: RDS fifo overflow\n"); |
bec2aec5 HV |
295 | outb(0x80, dev->io); /* Select RDS fifo */ |
296 | while ((inb(dev->io) & 0x80) != 0) { | |
297 | dev->rdsbuf[dev->rdsin] = inb(dev->io + 1); | |
298 | if (dev->rdsin == dev->rdsout) | |
4286c6f6 | 299 | printk(KERN_WARNING "cadet: RDS buffer overflow\n"); |
1da177e4 | 300 | else |
bec2aec5 | 301 | dev->rdsin++; |
1da177e4 | 302 | } |
bec2aec5 | 303 | mutex_unlock(&dev->lock); |
1da177e4 LT |
304 | } |
305 | ||
306 | /* | |
307 | * Service pending read | |
308 | */ | |
bec2aec5 HV |
309 | if (dev->rdsin != dev->rdsout) |
310 | wake_up_interruptible(&dev->read_queue); | |
1da177e4 | 311 | |
4286c6f6 | 312 | /* |
1da177e4 LT |
313 | * Clean up and exit |
314 | */ | |
bec2aec5 HV |
315 | init_timer(&dev->readtimer); |
316 | dev->readtimer.function = cadet_handler; | |
317 | dev->readtimer.data = (unsigned long)0; | |
318 | dev->readtimer.expires = jiffies + msecs_to_jiffies(50); | |
319 | add_timer(&dev->readtimer); | |
1da177e4 LT |
320 | } |
321 | ||
322 | ||
bec2aec5 | 323 | static ssize_t cadet_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
1da177e4 | 324 | { |
bec2aec5 | 325 | struct cadet *dev = video_drvdata(file); |
1da177e4 | 326 | unsigned char readbuf[RDS_BUFFER]; |
bec2aec5 HV |
327 | int i = 0; |
328 | ||
1cccee0b | 329 | mutex_lock(&dev->lock); |
bec2aec5 | 330 | if (dev->rdsstat == 0) { |
bec2aec5 HV |
331 | dev->rdsstat = 1; |
332 | outb(0x80, dev->io); /* Select RDS fifo */ | |
bec2aec5 HV |
333 | init_timer(&dev->readtimer); |
334 | dev->readtimer.function = cadet_handler; | |
335 | dev->readtimer.data = (unsigned long)dev; | |
336 | dev->readtimer.expires = jiffies + msecs_to_jiffies(50); | |
337 | add_timer(&dev->readtimer); | |
1da177e4 | 338 | } |
bec2aec5 | 339 | if (dev->rdsin == dev->rdsout) { |
1cccee0b | 340 | mutex_unlock(&dev->lock); |
4286c6f6 MCC |
341 | if (file->f_flags & O_NONBLOCK) |
342 | return -EWOULDBLOCK; | |
bec2aec5 | 343 | interruptible_sleep_on(&dev->read_queue); |
1cccee0b | 344 | mutex_lock(&dev->lock); |
4286c6f6 | 345 | } |
bec2aec5 HV |
346 | while (i < count && dev->rdsin != dev->rdsout) |
347 | readbuf[i++] = dev->rdsbuf[dev->rdsout++]; | |
1cccee0b | 348 | mutex_unlock(&dev->lock); |
1da177e4 | 349 | |
bec2aec5 | 350 | if (copy_to_user(data, readbuf, i)) |
4286c6f6 | 351 | return -EFAULT; |
1da177e4 LT |
352 | return i; |
353 | } | |
354 | ||
355 | ||
c1c4fd3e DL |
356 | static int vidioc_querycap(struct file *file, void *priv, |
357 | struct v4l2_capability *v) | |
358 | { | |
bec2aec5 HV |
359 | strlcpy(v->driver, "ADS Cadet", sizeof(v->driver)); |
360 | strlcpy(v->card, "ADS Cadet", sizeof(v->card)); | |
361 | strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); | |
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)); |
cb0ed222 MA |
376 | v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | |
377 | V4L2_TUNER_CAP_RDS_BLOCK_IO; | |
c1c4fd3e DL |
378 | v->rangelow = 1400; /* 87.5 MHz */ |
379 | v->rangehigh = 1728; /* 108.0 MHz */ | |
bec2aec5 HV |
380 | v->rxsubchans = cadet_getstereo(dev); |
381 | switch (v->rxsubchans) { | |
c1c4fd3e DL |
382 | case V4L2_TUNER_SUB_MONO: |
383 | v->audmode = V4L2_TUNER_MODE_MONO; | |
384 | break; | |
385 | case V4L2_TUNER_SUB_STEREO: | |
386 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
387 | break; | |
bec2aec5 HV |
388 | default: |
389 | break; | |
1da177e4 | 390 | } |
8e280f24 | 391 | v->rxsubchans |= V4L2_TUNER_SUB_RDS; |
c1c4fd3e DL |
392 | break; |
393 | case 1: | |
bec2aec5 | 394 | strlcpy(v->name, "AM", sizeof(v->name)); |
c1c4fd3e DL |
395 | v->capability = V4L2_TUNER_CAP_LOW; |
396 | v->rangelow = 8320; /* 520 kHz */ | |
397 | v->rangehigh = 26400; /* 1650 kHz */ | |
398 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
399 | v->audmode = V4L2_TUNER_MODE_MONO; | |
400 | break; | |
401 | default: | |
402 | return -EINVAL; | |
403 | } | |
bec2aec5 | 404 | v->signal = dev->sigstrength; /* We might need to modify scaling of this */ |
c1c4fd3e DL |
405 | return 0; |
406 | } | |
c0c7fa09 | 407 | |
c1c4fd3e DL |
408 | static int vidioc_s_tuner(struct file *file, void *priv, |
409 | struct v4l2_tuner *v) | |
410 | { | |
bec2aec5 HV |
411 | struct cadet *dev = video_drvdata(file); |
412 | ||
413 | if (v->index != 0 && v->index != 1) | |
c1c4fd3e | 414 | return -EINVAL; |
bec2aec5 | 415 | dev->curtuner = v->index; |
c1c4fd3e DL |
416 | return 0; |
417 | } | |
c0c7fa09 | 418 | |
c1c4fd3e DL |
419 | static int vidioc_g_frequency(struct file *file, void *priv, |
420 | struct v4l2_frequency *f) | |
421 | { | |
bec2aec5 HV |
422 | struct cadet *dev = video_drvdata(file); |
423 | ||
424 | f->tuner = dev->curtuner; | |
c1c4fd3e | 425 | f->type = V4L2_TUNER_RADIO; |
bec2aec5 | 426 | f->frequency = cadet_getfreq(dev); |
c1c4fd3e DL |
427 | return 0; |
428 | } | |
429 | ||
430 | ||
431 | static int vidioc_s_frequency(struct file *file, void *priv, | |
432 | struct v4l2_frequency *f) | |
433 | { | |
bec2aec5 HV |
434 | struct cadet *dev = video_drvdata(file); |
435 | ||
c1c4fd3e DL |
436 | if (f->type != V4L2_TUNER_RADIO) |
437 | return -EINVAL; | |
bec2aec5 | 438 | if (dev->curtuner == 0 && (f->frequency < 1400 || f->frequency > 1728)) |
c1c4fd3e | 439 | return -EINVAL; |
bec2aec5 | 440 | if (dev->curtuner == 1 && (f->frequency < 8320 || f->frequency > 26400)) |
c1c4fd3e | 441 | return -EINVAL; |
bec2aec5 | 442 | cadet_setfreq(dev, f->frequency); |
c1c4fd3e DL |
443 | return 0; |
444 | } | |
445 | ||
446 | static int vidioc_queryctrl(struct file *file, void *priv, | |
447 | struct v4l2_queryctrl *qc) | |
448 | { | |
bec2aec5 HV |
449 | switch (qc->id) { |
450 | case V4L2_CID_AUDIO_MUTE: | |
451 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
452 | case V4L2_CID_AUDIO_VOLUME: | |
453 | return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff); | |
c1c4fd3e DL |
454 | } |
455 | return -EINVAL; | |
456 | } | |
c0c7fa09 | 457 | |
c1c4fd3e DL |
458 | static int vidioc_g_ctrl(struct file *file, void *priv, |
459 | struct v4l2_control *ctrl) | |
460 | { | |
bec2aec5 HV |
461 | struct cadet *dev = video_drvdata(file); |
462 | ||
463 | switch (ctrl->id) { | |
c1c4fd3e | 464 | case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */ |
bec2aec5 | 465 | ctrl->value = (cadet_getvol(dev) == 0); |
c1c4fd3e DL |
466 | break; |
467 | case V4L2_CID_AUDIO_VOLUME: | |
bec2aec5 | 468 | ctrl->value = cadet_getvol(dev); |
c1c4fd3e DL |
469 | break; |
470 | default: | |
471 | return -EINVAL; | |
1da177e4 | 472 | } |
c1c4fd3e | 473 | return 0; |
1da177e4 LT |
474 | } |
475 | ||
c1c4fd3e DL |
476 | static int vidioc_s_ctrl(struct file *file, void *priv, |
477 | struct v4l2_control *ctrl) | |
1da177e4 | 478 | { |
bec2aec5 HV |
479 | struct cadet *dev = video_drvdata(file); |
480 | ||
c1c4fd3e DL |
481 | switch (ctrl->id){ |
482 | case V4L2_CID_AUDIO_MUTE: /* TODO: Handle this correctly */ | |
483 | if (ctrl->value) | |
bec2aec5 | 484 | cadet_setvol(dev, 0); |
c1c4fd3e | 485 | else |
bec2aec5 | 486 | cadet_setvol(dev, 0xffff); |
c1c4fd3e DL |
487 | break; |
488 | case V4L2_CID_AUDIO_VOLUME: | |
bec2aec5 | 489 | cadet_setvol(dev, ctrl->value); |
c1c4fd3e DL |
490 | break; |
491 | default: | |
492 | return -EINVAL; | |
493 | } | |
494 | return 0; | |
495 | } | |
496 | ||
c1c4fd3e DL |
497 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
498 | { | |
499 | *i = 0; | |
500 | return 0; | |
501 | } | |
502 | ||
503 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
504 | { | |
bec2aec5 HV |
505 | return i ? -EINVAL : 0; |
506 | } | |
507 | ||
508 | static int vidioc_g_audio(struct file *file, void *priv, | |
509 | struct v4l2_audio *a) | |
510 | { | |
511 | a->index = 0; | |
512 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
513 | a->capability = V4L2_AUDCAP_STEREO; | |
c1c4fd3e DL |
514 | return 0; |
515 | } | |
516 | ||
517 | static int vidioc_s_audio(struct file *file, void *priv, | |
518 | struct v4l2_audio *a) | |
519 | { | |
bec2aec5 | 520 | return a->index ? -EINVAL : 0; |
1da177e4 LT |
521 | } |
522 | ||
bec2aec5 | 523 | static int cadet_open(struct file *file) |
1da177e4 | 524 | { |
bec2aec5 HV |
525 | struct cadet *dev = video_drvdata(file); |
526 | ||
1cccee0b | 527 | mutex_lock(&dev->lock); |
bec2aec5 HV |
528 | dev->users++; |
529 | if (1 == dev->users) | |
530 | init_waitqueue_head(&dev->read_queue); | |
1cccee0b | 531 | mutex_unlock(&dev->lock); |
1da177e4 LT |
532 | return 0; |
533 | } | |
534 | ||
bec2aec5 | 535 | static int cadet_release(struct file *file) |
1da177e4 | 536 | { |
bec2aec5 HV |
537 | struct cadet *dev = video_drvdata(file); |
538 | ||
1cccee0b | 539 | mutex_lock(&dev->lock); |
bec2aec5 HV |
540 | dev->users--; |
541 | if (0 == dev->users) { | |
542 | del_timer_sync(&dev->readtimer); | |
543 | dev->rdsstat = 0; | |
c0c7fa09 | 544 | } |
1cccee0b | 545 | mutex_unlock(&dev->lock); |
c0c7fa09 HK |
546 | return 0; |
547 | } | |
548 | ||
bec2aec5 | 549 | static unsigned int cadet_poll(struct file *file, struct poll_table_struct *wait) |
c0c7fa09 | 550 | { |
bec2aec5 HV |
551 | struct cadet *dev = video_drvdata(file); |
552 | ||
553 | poll_wait(file, &dev->read_queue, wait); | |
554 | if (dev->rdsin != dev->rdsout) | |
c0c7fa09 | 555 | return POLLIN | POLLRDNORM; |
1da177e4 LT |
556 | return 0; |
557 | } | |
558 | ||
559 | ||
bec43661 | 560 | static const struct v4l2_file_operations cadet_fops = { |
1da177e4 LT |
561 | .owner = THIS_MODULE, |
562 | .open = cadet_open, | |
563 | .release = cadet_release, | |
564 | .read = cadet_read, | |
1cccee0b | 565 | .unlocked_ioctl = video_ioctl2, |
c0c7fa09 | 566 | .poll = cadet_poll, |
1da177e4 LT |
567 | }; |
568 | ||
a399810c | 569 | static const struct v4l2_ioctl_ops cadet_ioctl_ops = { |
c1c4fd3e DL |
570 | .vidioc_querycap = vidioc_querycap, |
571 | .vidioc_g_tuner = vidioc_g_tuner, | |
572 | .vidioc_s_tuner = vidioc_s_tuner, | |
573 | .vidioc_g_frequency = vidioc_g_frequency, | |
574 | .vidioc_s_frequency = vidioc_s_frequency, | |
575 | .vidioc_queryctrl = vidioc_queryctrl, | |
576 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
577 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
578 | .vidioc_g_audio = vidioc_g_audio, | |
579 | .vidioc_s_audio = vidioc_s_audio, | |
580 | .vidioc_g_input = vidioc_g_input, | |
581 | .vidioc_s_input = vidioc_s_input, | |
1da177e4 LT |
582 | }; |
583 | ||
044dfc99 BH |
584 | #ifdef CONFIG_PNP |
585 | ||
1da177e4 LT |
586 | static struct pnp_device_id cadet_pnp_devices[] = { |
587 | /* ADS Cadet AM/FM Radio Card */ | |
588 | {.id = "MSM0c24", .driver_data = 0}, | |
589 | {.id = ""} | |
590 | }; | |
591 | ||
592 | MODULE_DEVICE_TABLE(pnp, cadet_pnp_devices); | |
593 | ||
bec2aec5 | 594 | static int cadet_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) |
1da177e4 LT |
595 | { |
596 | if (!dev) | |
597 | return -ENODEV; | |
598 | /* only support one device */ | |
599 | if (io > 0) | |
600 | return -EBUSY; | |
601 | ||
bec2aec5 | 602 | if (!pnp_port_valid(dev, 0)) |
1da177e4 | 603 | return -ENODEV; |
1da177e4 LT |
604 | |
605 | io = pnp_port_start(dev, 0); | |
606 | ||
bec2aec5 | 607 | printk(KERN_INFO "radio-cadet: PnP reports device at %#x\n", io); |
1da177e4 LT |
608 | |
609 | return io; | |
610 | } | |
611 | ||
612 | static struct pnp_driver cadet_pnp_driver = { | |
613 | .name = "radio-cadet", | |
614 | .id_table = cadet_pnp_devices, | |
615 | .probe = cadet_pnp_probe, | |
616 | .remove = NULL, | |
617 | }; | |
618 | ||
044dfc99 BH |
619 | #else |
620 | static struct pnp_driver cadet_pnp_driver; | |
621 | #endif | |
622 | ||
bec2aec5 | 623 | static void cadet_probe(struct cadet *dev) |
1da177e4 | 624 | { |
bec2aec5 | 625 | static int iovals[8] = { 0x330, 0x332, 0x334, 0x336, 0x338, 0x33a, 0x33c, 0x33e }; |
1da177e4 LT |
626 | int i; |
627 | ||
bec2aec5 HV |
628 | for (i = 0; i < 8; i++) { |
629 | dev->io = iovals[i]; | |
630 | if (request_region(dev->io, 2, "cadet-probe")) { | |
631 | cadet_setfreq(dev, 1410); | |
632 | if (cadet_getfreq(dev) == 1410) { | |
633 | release_region(dev->io, 2); | |
634 | return; | |
1da177e4 | 635 | } |
bec2aec5 | 636 | release_region(dev->io, 2); |
1da177e4 LT |
637 | } |
638 | } | |
bec2aec5 | 639 | dev->io = -1; |
1da177e4 LT |
640 | } |
641 | ||
4286c6f6 | 642 | /* |
1da177e4 LT |
643 | * io should only be set if the user has used something like |
644 | * isapnp (the userspace program) to initialize this card for us | |
645 | */ | |
646 | ||
647 | static int __init cadet_init(void) | |
648 | { | |
bec2aec5 HV |
649 | struct cadet *dev = &cadet_card; |
650 | struct v4l2_device *v4l2_dev = &dev->v4l2_dev; | |
651 | int res; | |
4286c6f6 | 652 | |
bec2aec5 HV |
653 | strlcpy(v4l2_dev->name, "cadet", sizeof(v4l2_dev->name)); |
654 | mutex_init(&dev->lock); | |
655 | ||
656 | /* If a probe was requested then probe ISAPnP first (safest) */ | |
1da177e4 LT |
657 | if (io < 0) |
658 | pnp_register_driver(&cadet_pnp_driver); | |
bec2aec5 | 659 | dev->io = io; |
1da177e4 | 660 | |
bec2aec5 HV |
661 | /* If that fails then probe unsafely if probe is requested */ |
662 | if (dev->io < 0) | |
663 | cadet_probe(dev); | |
4286c6f6 | 664 | |
bec2aec5 HV |
665 | /* Else we bail out */ |
666 | if (dev->io < 0) { | |
4286c6f6 | 667 | #ifdef MODULE |
b24c20cc HV |
668 | v4l2_err(v4l2_dev, "you must set an I/O address with io=0x330, 0x332, 0x334,\n"); |
669 | v4l2_err(v4l2_dev, "0x336, 0x338, 0x33a, 0x33c or 0x33e\n"); | |
1da177e4 | 670 | #endif |
4286c6f6 | 671 | goto fail; |
1da177e4 | 672 | } |
bec2aec5 HV |
673 | if (!request_region(dev->io, 2, "cadet")) |
674 | goto fail; | |
675 | ||
676 | res = v4l2_device_register(NULL, v4l2_dev); | |
677 | if (res < 0) { | |
678 | release_region(dev->io, 2); | |
679 | v4l2_err(v4l2_dev, "could not register v4l2_device\n"); | |
1da177e4 | 680 | goto fail; |
bec2aec5 HV |
681 | } |
682 | ||
683 | strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); | |
684 | dev->vdev.v4l2_dev = v4l2_dev; | |
685 | dev->vdev.fops = &cadet_fops; | |
686 | dev->vdev.ioctl_ops = &cadet_ioctl_ops; | |
687 | dev->vdev.release = video_device_release_empty; | |
688 | video_set_drvdata(&dev->vdev, dev); | |
689 | ||
690 | if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { | |
691 | v4l2_device_unregister(v4l2_dev); | |
692 | release_region(dev->io, 2); | |
1da177e4 LT |
693 | goto fail; |
694 | } | |
bec2aec5 | 695 | v4l2_info(v4l2_dev, "ADS Cadet Radio Card at 0x%x\n", dev->io); |
1da177e4 LT |
696 | return 0; |
697 | fail: | |
698 | pnp_unregister_driver(&cadet_pnp_driver); | |
bec2aec5 | 699 | return -ENODEV; |
1da177e4 LT |
700 | } |
701 | ||
bec2aec5 | 702 | static void __exit cadet_exit(void) |
1da177e4 | 703 | { |
bec2aec5 HV |
704 | struct cadet *dev = &cadet_card; |
705 | ||
706 | video_unregister_device(&dev->vdev); | |
707 | v4l2_device_unregister(&dev->v4l2_dev); | |
708 | release_region(dev->io, 2); | |
1da177e4 LT |
709 | pnp_unregister_driver(&cadet_pnp_driver); |
710 | } | |
711 | ||
712 | module_init(cadet_init); | |
bec2aec5 | 713 | module_exit(cadet_exit); |
1da177e4 | 714 |