Commit | Line | Data |
---|---|---|
fdcfd4e7 HV |
1 | /* |
2 | * Miro PCM20 radio driver for Linux radio support | |
8366fc39 KH |
3 | * (c) 1998 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl> |
4 | * Thanks to Norberto Pellici for the ACI device interface specification | |
5 | * The API part is based on the radiotrack driver by M. Kirkwood | |
6 | * This driver relies on the aci mixer provided by the snd-miro | |
7 | * ALSA driver. | |
8 | * Look there for further info... | |
fdcfd4e7 HV |
9 | * |
10 | * From the original miro RDS sources: | |
11 | * | |
12 | * (c) 2001 Robert Siemer <Robert.Siemer@gmx.de> | |
13 | * | |
14 | * Many thanks to Fred Seidel <seidel@metabox.de>, the | |
15 | * designer of the RDS decoder hardware. With his help | |
16 | * I was able to code this driver. | |
17 | * Thanks also to Norberto Pellicci, Dominic Mounteney | |
18 | * <DMounteney@pinnaclesys.com> and www.teleauskunft.de | |
19 | * for good hints on finding Fred. It was somewhat hard | |
20 | * to locate him here in Germany... [: | |
21 | * | |
22 | * This code has been reintroduced and converted to use | |
23 | * the new V4L2 RDS API by: | |
24 | * | |
25 | * Hans Verkuil <hans.verkuil@cisco.com> | |
8366fc39 KH |
26 | */ |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
7102076c | 30 | #include <linux/io.h> |
fdcfd4e7 | 31 | #include <linux/delay.h> |
8366fc39 | 32 | #include <linux/videodev2.h> |
fdcfd4e7 | 33 | #include <linux/kthread.h> |
8366fc39 KH |
34 | #include <media/v4l2-device.h> |
35 | #include <media/v4l2-ioctl.h> | |
7f51a610 | 36 | #include <media/v4l2-ctrls.h> |
f7c096f7 HV |
37 | #include <media/v4l2-fh.h> |
38 | #include <media/v4l2-event.h> | |
8366fc39 KH |
39 | #include <sound/aci.h> |
40 | ||
fdcfd4e7 HV |
41 | #define RDS_DATASHIFT 2 /* Bit 2 */ |
42 | #define RDS_DATAMASK (1 << RDS_DATASHIFT) | |
43 | #define RDS_BUSYMASK 0x10 /* Bit 4 */ | |
44 | #define RDS_CLOCKMASK 0x08 /* Bit 3 */ | |
45 | #define RDS_DATA(x) (((x) >> RDS_DATASHIFT) & 1) | |
46 | ||
47 | #define RDS_STATUS 0x01 | |
48 | #define RDS_STATIONNAME 0x02 | |
49 | #define RDS_TEXT 0x03 | |
50 | #define RDS_ALTFREQ 0x04 | |
51 | #define RDS_TIMEDATE 0x05 | |
52 | #define RDS_PI_CODE 0x06 | |
53 | #define RDS_PTYTATP 0x07 | |
54 | #define RDS_RESET 0x08 | |
55 | #define RDS_RXVALUE 0x09 | |
56 | ||
8366fc39 KH |
57 | static int radio_nr = -1; |
58 | module_param(radio_nr, int, 0); | |
59 | MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); | |
60 | ||
8366fc39 KH |
61 | struct pcm20 { |
62 | struct v4l2_device v4l2_dev; | |
63 | struct video_device vdev; | |
7f51a610 | 64 | struct v4l2_ctrl_handler ctrl_handler; |
fdcfd4e7 HV |
65 | struct v4l2_ctrl *rds_pty; |
66 | struct v4l2_ctrl *rds_ps_name; | |
67 | struct v4l2_ctrl *rds_radio_test; | |
68 | struct v4l2_ctrl *rds_ta; | |
69 | struct v4l2_ctrl *rds_tp; | |
70 | struct v4l2_ctrl *rds_ms; | |
71 | /* thread for periodic RDS status checking */ | |
72 | struct task_struct *kthread; | |
8366fc39 | 73 | unsigned long freq; |
f5e7cc4a | 74 | u32 audmode; |
8366fc39 | 75 | struct snd_miro_aci *aci; |
32958fdd | 76 | struct mutex lock; |
8366fc39 KH |
77 | }; |
78 | ||
79 | static struct pcm20 pcm20_card = { | |
f5e7cc4a HV |
80 | .freq = 87 * 16000, |
81 | .audmode = V4L2_TUNER_MODE_STEREO, | |
8366fc39 KH |
82 | }; |
83 | ||
fdcfd4e7 HV |
84 | |
85 | static int rds_waitread(struct snd_miro_aci *aci) | |
86 | { | |
87 | u8 byte; | |
88 | int i = 2000; | |
89 | ||
90 | do { | |
91 | byte = inb(aci->aci_port + ACI_REG_RDS); | |
92 | i--; | |
93 | } while ((byte & RDS_BUSYMASK) && i); | |
94 | ||
95 | /* | |
96 | * It's magic, but without this the data that you read later on | |
97 | * is unreliable and full of bit errors. With this 1 usec delay | |
98 | * everything is fine. | |
99 | */ | |
100 | udelay(1); | |
101 | return i ? byte : -1; | |
102 | } | |
103 | ||
104 | static int rds_rawwrite(struct snd_miro_aci *aci, u8 byte) | |
105 | { | |
106 | if (rds_waitread(aci) >= 0) { | |
107 | outb(byte, aci->aci_port + ACI_REG_RDS); | |
108 | return 0; | |
109 | } | |
110 | return -1; | |
111 | } | |
112 | ||
113 | static int rds_write(struct snd_miro_aci *aci, u8 byte) | |
114 | { | |
115 | u8 sendbuffer[8]; | |
116 | int i; | |
117 | ||
118 | for (i = 7; i >= 0; i--) | |
119 | sendbuffer[7 - i] = (byte & (1 << i)) ? RDS_DATAMASK : 0; | |
120 | sendbuffer[0] |= RDS_CLOCKMASK; | |
121 | ||
122 | for (i = 0; i < 8; i++) | |
123 | rds_rawwrite(aci, sendbuffer[i]); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | static int rds_readcycle_nowait(struct snd_miro_aci *aci) | |
128 | { | |
129 | outb(0, aci->aci_port + ACI_REG_RDS); | |
130 | return rds_waitread(aci); | |
131 | } | |
132 | ||
133 | static int rds_readcycle(struct snd_miro_aci *aci) | |
134 | { | |
135 | if (rds_rawwrite(aci, 0) < 0) | |
136 | return -1; | |
137 | return rds_waitread(aci); | |
138 | } | |
139 | ||
140 | static int rds_ack(struct snd_miro_aci *aci) | |
141 | { | |
142 | int i = rds_readcycle(aci); | |
143 | ||
144 | if (i < 0) | |
145 | return -1; | |
146 | if (i & RDS_DATAMASK) | |
147 | return 0; /* ACK */ | |
148 | return 1; /* NACK */ | |
149 | } | |
150 | ||
151 | static int rds_cmd(struct snd_miro_aci *aci, u8 cmd, u8 databuffer[], u8 datasize) | |
152 | { | |
153 | int i, j; | |
154 | ||
155 | rds_write(aci, cmd); | |
156 | ||
157 | /* RDS_RESET doesn't need further processing */ | |
158 | if (cmd == RDS_RESET) | |
159 | return 0; | |
160 | if (rds_ack(aci)) | |
161 | return -EIO; | |
162 | if (datasize == 0) | |
163 | return 0; | |
164 | ||
165 | /* to be able to use rds_readcycle_nowait() | |
166 | I have to waitread() here */ | |
167 | if (rds_waitread(aci) < 0) | |
168 | return -1; | |
169 | ||
170 | memset(databuffer, 0, datasize); | |
171 | ||
172 | for (i = 0; i < 8 * datasize; i++) { | |
173 | j = rds_readcycle_nowait(aci); | |
174 | if (j < 0) | |
175 | return -EIO; | |
176 | databuffer[i / 8] |= RDS_DATA(j) << (7 - (i % 8)); | |
177 | } | |
178 | return 0; | |
179 | } | |
180 | ||
8366fc39 KH |
181 | static int pcm20_setfreq(struct pcm20 *dev, unsigned long freq) |
182 | { | |
183 | unsigned char freql; | |
184 | unsigned char freqh; | |
185 | struct snd_miro_aci *aci = dev->aci; | |
186 | ||
8366fc39 KH |
187 | freq /= 160; |
188 | if (!(aci->aci_version == 0x07 || aci->aci_version >= 0xb0)) | |
189 | freq /= 10; /* I don't know exactly which version | |
190 | * needs this hack */ | |
191 | freql = freq & 0xff; | |
192 | freqh = freq >> 8; | |
193 | ||
27dcb00d | 194 | rds_cmd(aci, RDS_RESET, NULL, 0); |
8366fc39 KH |
195 | return snd_aci_cmd(aci, ACI_WRITE_TUNE, freql, freqh); |
196 | } | |
197 | ||
8366fc39 KH |
198 | static int vidioc_querycap(struct file *file, void *priv, |
199 | struct v4l2_capability *v) | |
200 | { | |
f122d9a8 HV |
201 | struct pcm20 *dev = video_drvdata(file); |
202 | ||
8366fc39 KH |
203 | strlcpy(v->driver, "Miro PCM20", sizeof(v->driver)); |
204 | strlcpy(v->card, "Miro PCM20", sizeof(v->card)); | |
f122d9a8 | 205 | snprintf(v->bus_info, sizeof(v->bus_info), "ISA:%s", dev->v4l2_dev.name); |
fdcfd4e7 | 206 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE; |
f122d9a8 | 207 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; |
8366fc39 KH |
208 | return 0; |
209 | } | |
210 | ||
fdcfd4e7 HV |
211 | static bool sanitize(char *p, int size) |
212 | { | |
213 | int i; | |
214 | bool ret = true; | |
215 | ||
216 | for (i = 0; i < size; i++) { | |
9c46c7fa | 217 | if (p[i] < 32) { |
fdcfd4e7 HV |
218 | p[i] = ' '; |
219 | ret = false; | |
220 | } | |
221 | } | |
222 | return ret; | |
223 | } | |
224 | ||
8366fc39 KH |
225 | static int vidioc_g_tuner(struct file *file, void *priv, |
226 | struct v4l2_tuner *v) | |
227 | { | |
f5e7cc4a | 228 | struct pcm20 *dev = video_drvdata(file); |
9bbc5820 | 229 | int res; |
fdcfd4e7 | 230 | u8 buf; |
f5e7cc4a HV |
231 | |
232 | if (v->index) | |
8366fc39 KH |
233 | return -EINVAL; |
234 | strlcpy(v->name, "FM", sizeof(v->name)); | |
235 | v->type = V4L2_TUNER_RADIO; | |
236 | v->rangelow = 87*16000; | |
237 | v->rangehigh = 108*16000; | |
9bbc5820 HV |
238 | res = snd_aci_cmd(dev->aci, ACI_READ_TUNERSTATION, -1, -1); |
239 | v->signal = (res & 0x80) ? 0 : 0xffff; | |
240 | /* Note: stereo detection does not work if the audio is muted, | |
241 | it will default to mono in that case. */ | |
242 | res = snd_aci_cmd(dev->aci, ACI_READ_TUNERSTEREO, -1, -1); | |
243 | v->rxsubchans = (res & 0x40) ? V4L2_TUNER_SUB_MONO : | |
244 | V4L2_TUNER_SUB_STEREO; | |
fdcfd4e7 HV |
245 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
246 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS; | |
f5e7cc4a | 247 | v->audmode = dev->audmode; |
fdcfd4e7 HV |
248 | res = rds_cmd(dev->aci, RDS_RXVALUE, &buf, 1); |
249 | if (res >= 0 && buf) | |
250 | v->rxsubchans |= V4L2_TUNER_SUB_RDS; | |
8366fc39 KH |
251 | return 0; |
252 | } | |
253 | ||
254 | static int vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 255 | const struct v4l2_tuner *v) |
8366fc39 | 256 | { |
f5e7cc4a HV |
257 | struct pcm20 *dev = video_drvdata(file); |
258 | ||
259 | if (v->index) | |
260 | return -EINVAL; | |
261 | if (v->audmode > V4L2_TUNER_MODE_STEREO) | |
2f73c7c5 HV |
262 | dev->audmode = V4L2_TUNER_MODE_STEREO; |
263 | else | |
264 | dev->audmode = v->audmode; | |
f5e7cc4a | 265 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, |
2f73c7c5 | 266 | dev->audmode == V4L2_TUNER_MODE_MONO, -1); |
f5e7cc4a | 267 | return 0; |
8366fc39 KH |
268 | } |
269 | ||
270 | static int vidioc_g_frequency(struct file *file, void *priv, | |
271 | struct v4l2_frequency *f) | |
272 | { | |
273 | struct pcm20 *dev = video_drvdata(file); | |
274 | ||
275 | if (f->tuner != 0) | |
276 | return -EINVAL; | |
277 | ||
278 | f->type = V4L2_TUNER_RADIO; | |
279 | f->frequency = dev->freq; | |
280 | return 0; | |
281 | } | |
282 | ||
283 | ||
284 | static int vidioc_s_frequency(struct file *file, void *priv, | |
b530a447 | 285 | const struct v4l2_frequency *f) |
8366fc39 KH |
286 | { |
287 | struct pcm20 *dev = video_drvdata(file); | |
288 | ||
289 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) | |
290 | return -EINVAL; | |
291 | ||
b530a447 | 292 | dev->freq = clamp_t(u32, f->frequency, 87 * 16000U, 108 * 16000U); |
f5e7cc4a | 293 | pcm20_setfreq(dev, dev->freq); |
8366fc39 KH |
294 | return 0; |
295 | } | |
296 | ||
7f51a610 | 297 | static int pcm20_s_ctrl(struct v4l2_ctrl *ctrl) |
8366fc39 | 298 | { |
7f51a610 | 299 | struct pcm20 *dev = container_of(ctrl->handler, struct pcm20, ctrl_handler); |
8366fc39 KH |
300 | |
301 | switch (ctrl->id) { | |
302 | case V4L2_CID_AUDIO_MUTE: | |
f5e7cc4a | 303 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, ctrl->val, -1); |
7f51a610 | 304 | return 0; |
8366fc39 | 305 | } |
7f51a610 | 306 | return -EINVAL; |
8366fc39 KH |
307 | } |
308 | ||
fdcfd4e7 HV |
309 | static int pcm20_thread(void *data) |
310 | { | |
311 | struct pcm20 *dev = data; | |
312 | const unsigned no_rds_start_counter = 5; | |
313 | const unsigned sleep_msecs = 2000; | |
314 | unsigned no_rds_counter = no_rds_start_counter; | |
315 | ||
316 | for (;;) { | |
317 | char text_buffer[66]; | |
318 | u8 buf; | |
319 | int res; | |
320 | ||
321 | msleep_interruptible(sleep_msecs); | |
322 | ||
323 | if (kthread_should_stop()) | |
324 | break; | |
325 | ||
326 | res = rds_cmd(dev->aci, RDS_RXVALUE, &buf, 1); | |
327 | if (res) | |
328 | continue; | |
329 | if (buf == 0) { | |
330 | if (no_rds_counter == 0) | |
331 | continue; | |
332 | no_rds_counter--; | |
333 | if (no_rds_counter) | |
334 | continue; | |
335 | ||
336 | /* | |
337 | * No RDS seen for no_rds_start_counter * sleep_msecs | |
338 | * milliseconds, clear all RDS controls to their | |
339 | * default values. | |
340 | */ | |
341 | v4l2_ctrl_s_ctrl_string(dev->rds_ps_name, ""); | |
342 | v4l2_ctrl_s_ctrl(dev->rds_ms, 1); | |
343 | v4l2_ctrl_s_ctrl(dev->rds_ta, 0); | |
344 | v4l2_ctrl_s_ctrl(dev->rds_tp, 0); | |
345 | v4l2_ctrl_s_ctrl(dev->rds_pty, 0); | |
346 | v4l2_ctrl_s_ctrl_string(dev->rds_radio_test, ""); | |
347 | continue; | |
348 | } | |
349 | no_rds_counter = no_rds_start_counter; | |
350 | ||
351 | res = rds_cmd(dev->aci, RDS_STATUS, &buf, 1); | |
352 | if (res) | |
353 | continue; | |
354 | if ((buf >> 3) & 1) { | |
355 | res = rds_cmd(dev->aci, RDS_STATIONNAME, text_buffer, 8); | |
356 | text_buffer[8] = 0; | |
357 | if (!res && sanitize(text_buffer, 8)) | |
358 | v4l2_ctrl_s_ctrl_string(dev->rds_ps_name, text_buffer); | |
359 | } | |
360 | if ((buf >> 6) & 1) { | |
361 | u8 pty; | |
362 | ||
363 | res = rds_cmd(dev->aci, RDS_PTYTATP, &pty, 1); | |
364 | if (!res) { | |
365 | v4l2_ctrl_s_ctrl(dev->rds_ms, !!(pty & 0x01)); | |
366 | v4l2_ctrl_s_ctrl(dev->rds_ta, !!(pty & 0x02)); | |
367 | v4l2_ctrl_s_ctrl(dev->rds_tp, !!(pty & 0x80)); | |
368 | v4l2_ctrl_s_ctrl(dev->rds_pty, (pty >> 2) & 0x1f); | |
369 | } | |
370 | } | |
371 | if ((buf >> 4) & 1) { | |
372 | res = rds_cmd(dev->aci, RDS_TEXT, text_buffer, 65); | |
373 | text_buffer[65] = 0; | |
374 | if (!res && sanitize(text_buffer + 1, 64)) | |
375 | v4l2_ctrl_s_ctrl_string(dev->rds_radio_test, text_buffer + 1); | |
376 | } | |
377 | } | |
378 | return 0; | |
379 | } | |
380 | ||
381 | static int pcm20_open(struct file *file) | |
382 | { | |
383 | struct pcm20 *dev = video_drvdata(file); | |
384 | int res = v4l2_fh_open(file); | |
385 | ||
386 | if (!res && v4l2_fh_is_singular_file(file) && | |
387 | IS_ERR_OR_NULL(dev->kthread)) { | |
388 | dev->kthread = kthread_run(pcm20_thread, dev, "%s", | |
389 | dev->v4l2_dev.name); | |
390 | if (IS_ERR(dev->kthread)) { | |
391 | v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n"); | |
392 | v4l2_fh_release(file); | |
393 | return PTR_ERR(dev->kthread); | |
394 | } | |
395 | } | |
396 | return res; | |
397 | } | |
398 | ||
399 | static int pcm20_release(struct file *file) | |
400 | { | |
401 | struct pcm20 *dev = video_drvdata(file); | |
402 | ||
403 | if (v4l2_fh_is_singular_file(file) && !IS_ERR_OR_NULL(dev->kthread)) { | |
404 | kthread_stop(dev->kthread); | |
405 | dev->kthread = NULL; | |
406 | } | |
407 | return v4l2_fh_release(file); | |
408 | } | |
409 | ||
410 | static const struct v4l2_file_operations pcm20_fops = { | |
411 | .owner = THIS_MODULE, | |
412 | .open = pcm20_open, | |
413 | .poll = v4l2_ctrl_poll, | |
414 | .release = pcm20_release, | |
415 | .unlocked_ioctl = video_ioctl2, | |
416 | }; | |
417 | ||
8366fc39 KH |
418 | static const struct v4l2_ioctl_ops pcm20_ioctl_ops = { |
419 | .vidioc_querycap = vidioc_querycap, | |
420 | .vidioc_g_tuner = vidioc_g_tuner, | |
421 | .vidioc_s_tuner = vidioc_s_tuner, | |
422 | .vidioc_g_frequency = vidioc_g_frequency, | |
423 | .vidioc_s_frequency = vidioc_s_frequency, | |
f7c096f7 HV |
424 | .vidioc_log_status = v4l2_ctrl_log_status, |
425 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
426 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
7f51a610 HV |
427 | }; |
428 | ||
429 | static const struct v4l2_ctrl_ops pcm20_ctrl_ops = { | |
430 | .s_ctrl = pcm20_s_ctrl, | |
8366fc39 KH |
431 | }; |
432 | ||
433 | static int __init pcm20_init(void) | |
434 | { | |
435 | struct pcm20 *dev = &pcm20_card; | |
436 | struct v4l2_device *v4l2_dev = &dev->v4l2_dev; | |
7f51a610 | 437 | struct v4l2_ctrl_handler *hdl; |
8366fc39 KH |
438 | int res; |
439 | ||
440 | dev->aci = snd_aci_get_aci(); | |
441 | if (dev->aci == NULL) { | |
442 | v4l2_err(v4l2_dev, | |
443 | "you must load the snd-miro driver first!\n"); | |
444 | return -ENODEV; | |
445 | } | |
f122d9a8 | 446 | strlcpy(v4l2_dev->name, "radio-miropcm20", sizeof(v4l2_dev->name)); |
32958fdd | 447 | mutex_init(&dev->lock); |
8366fc39 KH |
448 | |
449 | res = v4l2_device_register(NULL, v4l2_dev); | |
450 | if (res < 0) { | |
451 | v4l2_err(v4l2_dev, "could not register v4l2_device\n"); | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
7f51a610 | 455 | hdl = &dev->ctrl_handler; |
fdcfd4e7 | 456 | v4l2_ctrl_handler_init(hdl, 7); |
7f51a610 HV |
457 | v4l2_ctrl_new_std(hdl, &pcm20_ctrl_ops, |
458 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
fdcfd4e7 HV |
459 | dev->rds_pty = v4l2_ctrl_new_std(hdl, NULL, |
460 | V4L2_CID_RDS_RX_PTY, 0, 0x1f, 1, 0); | |
461 | dev->rds_ps_name = v4l2_ctrl_new_std(hdl, NULL, | |
462 | V4L2_CID_RDS_RX_PS_NAME, 0, 8, 8, 0); | |
463 | dev->rds_radio_test = v4l2_ctrl_new_std(hdl, NULL, | |
464 | V4L2_CID_RDS_RX_RADIO_TEXT, 0, 64, 64, 0); | |
465 | dev->rds_ta = v4l2_ctrl_new_std(hdl, NULL, | |
466 | V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT, 0, 1, 1, 0); | |
467 | dev->rds_tp = v4l2_ctrl_new_std(hdl, NULL, | |
468 | V4L2_CID_RDS_RX_TRAFFIC_PROGRAM, 0, 1, 1, 0); | |
469 | dev->rds_ms = v4l2_ctrl_new_std(hdl, NULL, | |
470 | V4L2_CID_RDS_RX_MUSIC_SPEECH, 0, 1, 1, 1); | |
7f51a610 HV |
471 | v4l2_dev->ctrl_handler = hdl; |
472 | if (hdl->error) { | |
473 | res = hdl->error; | |
474 | v4l2_err(v4l2_dev, "Could not register control\n"); | |
475 | goto err_hdl; | |
476 | } | |
8366fc39 KH |
477 | strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); |
478 | dev->vdev.v4l2_dev = v4l2_dev; | |
479 | dev->vdev.fops = &pcm20_fops; | |
480 | dev->vdev.ioctl_ops = &pcm20_ioctl_ops; | |
481 | dev->vdev.release = video_device_release_empty; | |
32958fdd | 482 | dev->vdev.lock = &dev->lock; |
8366fc39 | 483 | video_set_drvdata(&dev->vdev, dev); |
f5e7cc4a HV |
484 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, |
485 | dev->audmode == V4L2_TUNER_MODE_MONO, -1); | |
486 | pcm20_setfreq(dev, dev->freq); | |
8366fc39 KH |
487 | |
488 | if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) | |
7f51a610 | 489 | goto err_hdl; |
8366fc39 KH |
490 | |
491 | v4l2_info(v4l2_dev, "Mirosound PCM20 Radio tuner\n"); | |
492 | return 0; | |
7f51a610 HV |
493 | err_hdl: |
494 | v4l2_ctrl_handler_free(hdl); | |
8366fc39 KH |
495 | v4l2_device_unregister(v4l2_dev); |
496 | return -EINVAL; | |
497 | } | |
498 | ||
499 | MODULE_AUTHOR("Ruurd Reitsma, Krzysztof Helt"); | |
500 | MODULE_DESCRIPTION("A driver for the Miro PCM20 radio card."); | |
501 | MODULE_LICENSE("GPL"); | |
502 | ||
503 | static void __exit pcm20_cleanup(void) | |
504 | { | |
505 | struct pcm20 *dev = &pcm20_card; | |
506 | ||
507 | video_unregister_device(&dev->vdev); | |
f5e7cc4a | 508 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, 1, -1); |
7f51a610 | 509 | v4l2_ctrl_handler_free(&dev->ctrl_handler); |
8366fc39 KH |
510 | v4l2_device_unregister(&dev->v4l2_dev); |
511 | } | |
512 | ||
513 | module_init(pcm20_init); | |
514 | module_exit(pcm20_cleanup); |