Commit | Line | Data |
---|---|---|
2aa72f3b AK |
1 | /* |
2 | * A driver for the AverMedia MR 800 USB FM radio. This device plugs | |
3 | * into both the USB and an analog audio input, so this thing | |
4 | * only deals with initialization and frequency setting, the | |
5 | * audio data has to be handled by a sound driver. | |
6 | * | |
7 | * Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
71f07d94 | 25 | * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c |
2aa72f3b AK |
26 | * |
27 | * When work was looked pretty good, i discover this: | |
28 | * http://av-usbradio.sourceforge.net/index.php | |
29 | * http://sourceforge.net/projects/av-usbradio/ | |
30 | * Latest release of theirs project was in 2005. | |
31 | * Probably, this driver could be improved trough using their | |
32 | * achievements (specifications given). | |
71f07d94 AK |
33 | * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio |
34 | * in 2007. He allowed to use his driver to improve current mr800 radio driver. | |
35 | * http://kerneltrap.org/mailarchive/linux-usb-devel/2007/10/11/342492 | |
2aa72f3b | 36 | * |
2aa72f3b AK |
37 | * Version 0.01: First working version. |
38 | * It's required to blacklist AverMedia USB Radio | |
39 | * in usbhid/hid-quirks.c | |
71f07d94 AK |
40 | * Version 0.10: A lot of cleanups and fixes: unpluging the device, |
41 | * few mutex locks were added, codinstyle issues, etc. | |
42 | * Added stereo support. Thanks to | |
43 | * Douglas Schilling Landgraf <dougsland@gmail.com> and | |
44 | * David Ellingsworth <david@identd.dyndns.org> | |
45 | * for discussion, help and support. | |
2aa72f3b AK |
46 | * |
47 | * Many things to do: | |
48 | * - Correct power managment of device (suspend & resume) | |
2aa72f3b | 49 | * - Add code for scanning and smooth tuning |
2aa72f3b AK |
50 | * - Add code for sensitivity value |
51 | * - Correct mistakes | |
52 | * - In Japan another FREQ_MIN and FREQ_MAX | |
53 | */ | |
54 | ||
55 | /* kernel includes */ | |
56 | #include <linux/kernel.h> | |
57 | #include <linux/module.h> | |
58 | #include <linux/init.h> | |
59 | #include <linux/slab.h> | |
60 | #include <linux/input.h> | |
61 | #include <linux/videodev2.h> | |
62 | #include <media/v4l2-common.h> | |
63 | #include <media/v4l2-ioctl.h> | |
64 | #include <linux/usb.h> | |
65 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ | |
66 | ||
67 | /* driver and module definitions */ | |
68 | #define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" | |
69 | #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver" | |
71f07d94 AK |
70 | #define DRIVER_VERSION "0.10" |
71 | #define RADIO_VERSION KERNEL_VERSION(0, 1, 0) | |
2aa72f3b AK |
72 | |
73 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
74 | MODULE_DESCRIPTION(DRIVER_DESC); | |
75 | MODULE_LICENSE("GPL"); | |
76 | ||
77 | #define USB_AMRADIO_VENDOR 0x07ca | |
78 | #define USB_AMRADIO_PRODUCT 0xb800 | |
79 | ||
e60b022e AK |
80 | /* dev_warn macro with driver name */ |
81 | #define MR800_DRIVER_NAME "radio-mr800" | |
82 | #define amradio_dev_warn(dev, fmt, arg...) \ | |
83 | dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
84 | ||
2aa72f3b AK |
85 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
86 | #define BUFFER_LENGTH 8 | |
87 | #define USB_TIMEOUT 500 | |
88 | ||
89 | /* Frequency limits in MHz -- these are European values. For Japanese | |
90 | devices, that would be 76 and 91. */ | |
91 | #define FREQ_MIN 87.5 | |
92 | #define FREQ_MAX 108.0 | |
93 | #define FREQ_MUL 16000 | |
94 | ||
db821804 AK |
95 | /* |
96 | * Commands that device should understand | |
97 | * List isnt full and will be updated with implementation of new functions | |
98 | */ | |
f7c1a380 | 99 | #define AMRADIO_SET_FREQ 0xa4 |
db821804 | 100 | #define AMRADIO_SET_MUTE 0xab |
1bb16d71 | 101 | #define AMRADIO_SET_MONO 0xae |
db821804 AK |
102 | |
103 | /* Comfortable defines for amradio_set_mute */ | |
104 | #define AMRADIO_START 0x00 | |
105 | #define AMRADIO_STOP 0x01 | |
106 | ||
1bb16d71 AK |
107 | /* Comfortable defines for amradio_set_stereo */ |
108 | #define WANT_STEREO 0x00 | |
109 | #define WANT_MONO 0x01 | |
110 | ||
2aa72f3b AK |
111 | /* module parameter */ |
112 | static int radio_nr = -1; | |
113 | module_param(radio_nr, int, 0); | |
114 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); | |
115 | ||
116 | static struct v4l2_queryctrl radio_qctrl[] = { | |
117 | { | |
118 | .id = V4L2_CID_AUDIO_MUTE, | |
119 | .name = "Mute", | |
120 | .minimum = 0, | |
121 | .maximum = 1, | |
122 | .step = 1, | |
123 | .default_value = 1, | |
124 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
125 | }, | |
126 | /* HINT: the disabled controls are only here to satify kradio and such apps */ | |
127 | { .id = V4L2_CID_AUDIO_VOLUME, | |
128 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
129 | }, | |
130 | { | |
131 | .id = V4L2_CID_AUDIO_BALANCE, | |
132 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
133 | }, | |
134 | { | |
135 | .id = V4L2_CID_AUDIO_BASS, | |
136 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
137 | }, | |
138 | { | |
139 | .id = V4L2_CID_AUDIO_TREBLE, | |
140 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
141 | }, | |
142 | { | |
143 | .id = V4L2_CID_AUDIO_LOUDNESS, | |
144 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
145 | }, | |
146 | }; | |
147 | ||
148 | static int usb_amradio_probe(struct usb_interface *intf, | |
149 | const struct usb_device_id *id); | |
150 | static void usb_amradio_disconnect(struct usb_interface *intf); | |
bec43661 HV |
151 | static int usb_amradio_open(struct file *file); |
152 | static int usb_amradio_close(struct file *file); | |
2aa72f3b AK |
153 | static int usb_amradio_suspend(struct usb_interface *intf, |
154 | pm_message_t message); | |
155 | static int usb_amradio_resume(struct usb_interface *intf); | |
156 | ||
157 | /* Data for one (physical) device */ | |
158 | struct amradio_device { | |
159 | /* reference to USB and video device */ | |
160 | struct usb_device *usbdev; | |
161 | struct video_device *videodev; | |
162 | ||
163 | unsigned char *buffer; | |
164 | struct mutex lock; /* buffer locking */ | |
165 | int curfreq; | |
166 | int stereo; | |
167 | int users; | |
168 | int removed; | |
169 | int muted; | |
170 | }; | |
171 | ||
172 | /* USB Device ID List */ | |
173 | static struct usb_device_id usb_amradio_device_table[] = { | |
174 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
175 | USB_CLASS_HID, 0, 0) }, | |
176 | { } /* Terminating entry */ | |
177 | }; | |
178 | ||
179 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
180 | ||
181 | /* USB subsystem interface */ | |
182 | static struct usb_driver usb_amradio_driver = { | |
e60b022e | 183 | .name = MR800_DRIVER_NAME, |
2aa72f3b AK |
184 | .probe = usb_amradio_probe, |
185 | .disconnect = usb_amradio_disconnect, | |
186 | .suspend = usb_amradio_suspend, | |
187 | .resume = usb_amradio_resume, | |
188 | .reset_resume = usb_amradio_resume, | |
189 | .id_table = usb_amradio_device_table, | |
f2ce9179 | 190 | .supports_autosuspend = 0, |
2aa72f3b AK |
191 | }; |
192 | ||
db821804 AK |
193 | /* switch on/off the radio. Send 8 bytes to device */ |
194 | static int amradio_set_mute(struct amradio_device *radio, char argument) | |
2aa72f3b AK |
195 | { |
196 | int retval; | |
197 | int size; | |
198 | ||
3480130a AK |
199 | /* safety check */ |
200 | if (radio->removed) | |
201 | return -EIO; | |
202 | ||
2aa72f3b AK |
203 | mutex_lock(&radio->lock); |
204 | ||
205 | radio->buffer[0] = 0x00; | |
206 | radio->buffer[1] = 0x55; | |
207 | radio->buffer[2] = 0xaa; | |
208 | radio->buffer[3] = 0x00; | |
db821804 AK |
209 | radio->buffer[4] = AMRADIO_SET_MUTE; |
210 | radio->buffer[5] = argument; | |
2aa72f3b AK |
211 | radio->buffer[6] = 0x00; |
212 | radio->buffer[7] = 0x00; | |
213 | ||
214 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
215 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
216 | ||
e57458dc | 217 | if (retval < 0 || size != BUFFER_LENGTH) { |
2aa72f3b AK |
218 | mutex_unlock(&radio->lock); |
219 | return retval; | |
220 | } | |
221 | ||
db821804 | 222 | radio->muted = argument; |
2aa72f3b | 223 | |
7f03a585 AK |
224 | mutex_unlock(&radio->lock); |
225 | ||
2aa72f3b AK |
226 | return retval; |
227 | } | |
228 | ||
229 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
230 | static int amradio_setfreq(struct amradio_device *radio, int freq) | |
231 | { | |
232 | int retval; | |
233 | int size; | |
f7c1a380 | 234 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
2aa72f3b | 235 | |
3480130a AK |
236 | /* safety check */ |
237 | if (radio->removed) | |
238 | return -EIO; | |
239 | ||
2aa72f3b AK |
240 | mutex_lock(&radio->lock); |
241 | ||
242 | radio->buffer[0] = 0x00; | |
243 | radio->buffer[1] = 0x55; | |
244 | radio->buffer[2] = 0xaa; | |
245 | radio->buffer[3] = 0x03; | |
f7c1a380 | 246 | radio->buffer[4] = AMRADIO_SET_FREQ; |
2aa72f3b AK |
247 | radio->buffer[5] = 0x00; |
248 | radio->buffer[6] = 0x00; | |
249 | radio->buffer[7] = 0x08; | |
250 | ||
251 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
252 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
253 | ||
e57458dc | 254 | if (retval < 0 || size != BUFFER_LENGTH) { |
2aa72f3b AK |
255 | mutex_unlock(&radio->lock); |
256 | return retval; | |
257 | } | |
258 | ||
259 | /* frequency is calculated from freq_send and placed in first 2 bytes */ | |
260 | radio->buffer[0] = (freq_send >> 8) & 0xff; | |
261 | radio->buffer[1] = freq_send & 0xff; | |
262 | radio->buffer[2] = 0x01; | |
263 | radio->buffer[3] = 0x00; | |
264 | radio->buffer[4] = 0x00; | |
265 | /* 5 and 6 bytes of buffer already = 0x00 */ | |
266 | radio->buffer[7] = 0x00; | |
267 | ||
268 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
269 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
270 | ||
e57458dc | 271 | if (retval < 0 || size != BUFFER_LENGTH) { |
2aa72f3b AK |
272 | mutex_unlock(&radio->lock); |
273 | return retval; | |
274 | } | |
275 | ||
1bb16d71 AK |
276 | mutex_unlock(&radio->lock); |
277 | ||
278 | return retval; | |
279 | } | |
280 | ||
281 | static int amradio_set_stereo(struct amradio_device *radio, char argument) | |
282 | { | |
283 | int retval; | |
284 | int size; | |
285 | ||
286 | /* safety check */ | |
287 | if (radio->removed) | |
288 | return -EIO; | |
289 | ||
290 | mutex_lock(&radio->lock); | |
291 | ||
292 | radio->buffer[0] = 0x00; | |
293 | radio->buffer[1] = 0x55; | |
294 | radio->buffer[2] = 0xaa; | |
295 | radio->buffer[3] = 0x00; | |
296 | radio->buffer[4] = AMRADIO_SET_MONO; | |
297 | radio->buffer[5] = argument; | |
298 | radio->buffer[6] = 0x00; | |
299 | radio->buffer[7] = 0x00; | |
300 | ||
301 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
302 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
303 | ||
304 | if (retval < 0 || size != BUFFER_LENGTH) { | |
305 | radio->stereo = -1; | |
306 | mutex_unlock(&radio->lock); | |
307 | return retval; | |
308 | } | |
309 | ||
310 | radio->stereo = 1; | |
2aa72f3b | 311 | |
7f03a585 AK |
312 | mutex_unlock(&radio->lock); |
313 | ||
2aa72f3b AK |
314 | return retval; |
315 | } | |
316 | ||
71f07d94 AK |
317 | /* Handle unplugging the device. |
318 | * We call video_unregister_device in any case. | |
319 | * The last function called in this procedure is | |
320 | * usb_amradio_device_release. | |
321 | */ | |
2aa72f3b AK |
322 | static void usb_amradio_disconnect(struct usb_interface *intf) |
323 | { | |
324 | struct amradio_device *radio = usb_get_intfdata(intf); | |
325 | ||
f4e9043e | 326 | mutex_lock(&radio->lock); |
3480130a | 327 | radio->removed = 1; |
f4e9043e | 328 | mutex_unlock(&radio->lock); |
2aa72f3b | 329 | |
f4e9043e AK |
330 | usb_set_intfdata(intf, NULL); |
331 | video_unregister_device(radio->videodev); | |
2aa72f3b AK |
332 | } |
333 | ||
334 | /* vidioc_querycap - query device capabilities */ | |
335 | static int vidioc_querycap(struct file *file, void *priv, | |
336 | struct v4l2_capability *v) | |
337 | { | |
c7181cfa AK |
338 | struct amradio_device *radio = video_drvdata(file); |
339 | ||
2aa72f3b AK |
340 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
341 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 342 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
2aa72f3b AK |
343 | v->version = RADIO_VERSION; |
344 | v->capabilities = V4L2_CAP_TUNER; | |
345 | return 0; | |
346 | } | |
347 | ||
348 | /* vidioc_g_tuner - get tuner attributes */ | |
349 | static int vidioc_g_tuner(struct file *file, void *priv, | |
350 | struct v4l2_tuner *v) | |
351 | { | |
352 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
1bb16d71 | 353 | int retval; |
2aa72f3b | 354 | |
3480130a AK |
355 | /* safety check */ |
356 | if (radio->removed) | |
357 | return -EIO; | |
358 | ||
2aa72f3b AK |
359 | if (v->index > 0) |
360 | return -EINVAL; | |
361 | ||
362 | /* TODO: Add function which look is signal stereo or not | |
363 | * amradio_getstat(radio); | |
364 | */ | |
1bb16d71 AK |
365 | |
366 | /* we call amradio_set_stereo to set radio->stereo | |
367 | * Honestly, amradio_getstat should cover this in future and | |
368 | * amradio_set_stereo shouldn't be here | |
369 | */ | |
370 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
371 | if (retval < 0) | |
372 | amradio_dev_warn(&radio->videodev->dev, | |
373 | "set stereo failed\n"); | |
374 | ||
2aa72f3b AK |
375 | strcpy(v->name, "FM"); |
376 | v->type = V4L2_TUNER_RADIO; | |
377 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
378 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
379 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
380 | v->capability = V4L2_TUNER_CAP_LOW; | |
381 | if (radio->stereo) | |
382 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
383 | else | |
384 | v->audmode = V4L2_TUNER_MODE_MONO; | |
385 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ | |
386 | v->afc = 0; /* Don't know what is this */ | |
387 | return 0; | |
388 | } | |
389 | ||
390 | /* vidioc_s_tuner - set tuner attributes */ | |
391 | static int vidioc_s_tuner(struct file *file, void *priv, | |
392 | struct v4l2_tuner *v) | |
393 | { | |
3480130a | 394 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); |
1bb16d71 | 395 | int retval; |
3480130a AK |
396 | |
397 | /* safety check */ | |
398 | if (radio->removed) | |
399 | return -EIO; | |
400 | ||
2aa72f3b AK |
401 | if (v->index > 0) |
402 | return -EINVAL; | |
1bb16d71 AK |
403 | |
404 | /* mono/stereo selector */ | |
405 | switch (v->audmode) { | |
406 | case V4L2_TUNER_MODE_MONO: | |
407 | retval = amradio_set_stereo(radio, WANT_MONO); | |
408 | if (retval < 0) | |
409 | amradio_dev_warn(&radio->videodev->dev, | |
410 | "set mono failed\n"); | |
411 | break; | |
412 | case V4L2_TUNER_MODE_STEREO: | |
413 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
414 | if (retval < 0) | |
415 | amradio_dev_warn(&radio->videodev->dev, | |
416 | "set stereo failed\n"); | |
417 | break; | |
418 | default: | |
419 | return -EINVAL; | |
420 | } | |
421 | ||
2aa72f3b AK |
422 | return 0; |
423 | } | |
424 | ||
425 | /* vidioc_s_frequency - set tuner radio frequency */ | |
426 | static int vidioc_s_frequency(struct file *file, void *priv, | |
427 | struct v4l2_frequency *f) | |
428 | { | |
429 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
a5d69475 | 430 | int retval; |
2aa72f3b | 431 | |
3480130a AK |
432 | /* safety check */ |
433 | if (radio->removed) | |
434 | return -EIO; | |
435 | ||
52433bbb | 436 | mutex_lock(&radio->lock); |
2aa72f3b | 437 | radio->curfreq = f->frequency; |
52433bbb AK |
438 | mutex_unlock(&radio->lock); |
439 | ||
a5d69475 AK |
440 | retval = amradio_setfreq(radio, radio->curfreq); |
441 | if (retval < 0) | |
e60b022e AK |
442 | amradio_dev_warn(&radio->videodev->dev, |
443 | "set frequency failed\n"); | |
2aa72f3b AK |
444 | return 0; |
445 | } | |
446 | ||
447 | /* vidioc_g_frequency - get tuner radio frequency */ | |
448 | static int vidioc_g_frequency(struct file *file, void *priv, | |
449 | struct v4l2_frequency *f) | |
450 | { | |
451 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
452 | ||
3480130a AK |
453 | /* safety check */ |
454 | if (radio->removed) | |
455 | return -EIO; | |
456 | ||
2aa72f3b AK |
457 | f->type = V4L2_TUNER_RADIO; |
458 | f->frequency = radio->curfreq; | |
459 | return 0; | |
460 | } | |
461 | ||
462 | /* vidioc_queryctrl - enumerate control items */ | |
463 | static int vidioc_queryctrl(struct file *file, void *priv, | |
464 | struct v4l2_queryctrl *qc) | |
465 | { | |
466 | int i; | |
467 | ||
468 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { | |
469 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
e60b022e | 470 | memcpy(qc, &(radio_qctrl[i]), sizeof(*qc)); |
2aa72f3b AK |
471 | return 0; |
472 | } | |
473 | } | |
474 | return -EINVAL; | |
475 | } | |
476 | ||
477 | /* vidioc_g_ctrl - get the value of a control */ | |
478 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
479 | struct v4l2_control *ctrl) | |
480 | { | |
481 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
482 | ||
3480130a AK |
483 | /* safety check */ |
484 | if (radio->removed) | |
485 | return -EIO; | |
486 | ||
2aa72f3b AK |
487 | switch (ctrl->id) { |
488 | case V4L2_CID_AUDIO_MUTE: | |
489 | ctrl->value = radio->muted; | |
490 | return 0; | |
491 | } | |
492 | return -EINVAL; | |
493 | } | |
494 | ||
495 | /* vidioc_s_ctrl - set the value of a control */ | |
496 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
497 | struct v4l2_control *ctrl) | |
498 | { | |
499 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
a5d69475 | 500 | int retval; |
2aa72f3b | 501 | |
3480130a AK |
502 | /* safety check */ |
503 | if (radio->removed) | |
504 | return -EIO; | |
505 | ||
2aa72f3b AK |
506 | switch (ctrl->id) { |
507 | case V4L2_CID_AUDIO_MUTE: | |
508 | if (ctrl->value) { | |
db821804 | 509 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
a5d69475 | 510 | if (retval < 0) { |
e60b022e AK |
511 | amradio_dev_warn(&radio->videodev->dev, |
512 | "amradio_stop failed\n"); | |
2aa72f3b AK |
513 | return -1; |
514 | } | |
515 | } else { | |
db821804 | 516 | retval = amradio_set_mute(radio, AMRADIO_START); |
a5d69475 | 517 | if (retval < 0) { |
e60b022e AK |
518 | amradio_dev_warn(&radio->videodev->dev, |
519 | "amradio_start failed\n"); | |
2aa72f3b AK |
520 | return -1; |
521 | } | |
522 | } | |
523 | return 0; | |
524 | } | |
525 | return -EINVAL; | |
526 | } | |
527 | ||
528 | /* vidioc_g_audio - get audio attributes */ | |
529 | static int vidioc_g_audio(struct file *file, void *priv, | |
530 | struct v4l2_audio *a) | |
531 | { | |
532 | if (a->index > 1) | |
533 | return -EINVAL; | |
534 | ||
535 | strcpy(a->name, "Radio"); | |
536 | a->capability = V4L2_AUDCAP_STEREO; | |
537 | return 0; | |
538 | } | |
539 | ||
540 | /* vidioc_s_audio - set audio attributes */ | |
541 | static int vidioc_s_audio(struct file *file, void *priv, | |
542 | struct v4l2_audio *a) | |
543 | { | |
544 | if (a->index != 0) | |
545 | return -EINVAL; | |
546 | return 0; | |
547 | } | |
548 | ||
549 | /* vidioc_g_input - get input */ | |
550 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
551 | { | |
552 | *i = 0; | |
553 | return 0; | |
554 | } | |
555 | ||
556 | /* vidioc_s_input - set input */ | |
557 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
558 | { | |
559 | if (i != 0) | |
560 | return -EINVAL; | |
561 | return 0; | |
562 | } | |
563 | ||
564 | /* open device - amradio_start() and amradio_setfreq() */ | |
bec43661 | 565 | static int usb_amradio_open(struct file *file) |
2aa72f3b AK |
566 | { |
567 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
a5d69475 | 568 | int retval; |
2aa72f3b | 569 | |
0fabb783 AK |
570 | lock_kernel(); |
571 | ||
2aa72f3b AK |
572 | radio->users = 1; |
573 | radio->muted = 1; | |
574 | ||
db821804 | 575 | retval = amradio_set_mute(radio, AMRADIO_START); |
a5d69475 | 576 | if (retval < 0) { |
e60b022e AK |
577 | amradio_dev_warn(&radio->videodev->dev, |
578 | "radio did not start up properly\n"); | |
2aa72f3b | 579 | radio->users = 0; |
0fabb783 | 580 | unlock_kernel(); |
2aa72f3b AK |
581 | return -EIO; |
582 | } | |
a5d69475 | 583 | |
1bb16d71 AK |
584 | retval = amradio_set_stereo(radio, WANT_STEREO); |
585 | if (retval < 0) | |
586 | amradio_dev_warn(&radio->videodev->dev, | |
587 | "set stereo failed\n"); | |
588 | ||
a5d69475 AK |
589 | retval = amradio_setfreq(radio, radio->curfreq); |
590 | if (retval < 0) | |
e60b022e AK |
591 | amradio_dev_warn(&radio->videodev->dev, |
592 | "set frequency failed\n"); | |
0fabb783 AK |
593 | |
594 | unlock_kernel(); | |
2aa72f3b AK |
595 | return 0; |
596 | } | |
597 | ||
f4e9043e | 598 | /*close device */ |
bec43661 | 599 | static int usb_amradio_close(struct file *file) |
2aa72f3b AK |
600 | { |
601 | struct amradio_device *radio = video_get_drvdata(video_devdata(file)); | |
3480130a | 602 | int retval; |
2aa72f3b AK |
603 | |
604 | if (!radio) | |
605 | return -ENODEV; | |
3480130a | 606 | |
52433bbb | 607 | mutex_lock(&radio->lock); |
2aa72f3b | 608 | radio->users = 0; |
52433bbb | 609 | mutex_unlock(&radio->lock); |
3480130a | 610 | |
f4e9043e | 611 | if (!radio->removed) { |
db821804 | 612 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
3480130a AK |
613 | if (retval < 0) |
614 | amradio_dev_warn(&radio->videodev->dev, | |
615 | "amradio_stop failed\n"); | |
2aa72f3b | 616 | } |
3480130a | 617 | |
2aa72f3b AK |
618 | return 0; |
619 | } | |
620 | ||
621 | /* Suspend device - stop device. Need to be checked and fixed */ | |
622 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
623 | { | |
624 | struct amradio_device *radio = usb_get_intfdata(intf); | |
a5d69475 | 625 | int retval; |
2aa72f3b | 626 | |
db821804 | 627 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
a5d69475 | 628 | if (retval < 0) |
e60b022e | 629 | dev_warn(&intf->dev, "amradio_stop failed\n"); |
2aa72f3b | 630 | |
e60b022e | 631 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b AK |
632 | |
633 | return 0; | |
634 | } | |
635 | ||
636 | /* Resume device - start device. Need to be checked and fixed */ | |
637 | static int usb_amradio_resume(struct usb_interface *intf) | |
638 | { | |
639 | struct amradio_device *radio = usb_get_intfdata(intf); | |
a5d69475 | 640 | int retval; |
2aa72f3b | 641 | |
db821804 | 642 | retval = amradio_set_mute(radio, AMRADIO_START); |
a5d69475 | 643 | if (retval < 0) |
e60b022e | 644 | dev_warn(&intf->dev, "amradio_start failed\n"); |
2aa72f3b | 645 | |
e60b022e | 646 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b AK |
647 | |
648 | return 0; | |
649 | } | |
650 | ||
651 | /* File system interface */ | |
bec43661 | 652 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b AK |
653 | .owner = THIS_MODULE, |
654 | .open = usb_amradio_open, | |
655 | .release = usb_amradio_close, | |
656 | .ioctl = video_ioctl2, | |
2aa72f3b AK |
657 | }; |
658 | ||
659 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
660 | .vidioc_querycap = vidioc_querycap, | |
661 | .vidioc_g_tuner = vidioc_g_tuner, | |
662 | .vidioc_s_tuner = vidioc_s_tuner, | |
663 | .vidioc_g_frequency = vidioc_g_frequency, | |
664 | .vidioc_s_frequency = vidioc_s_frequency, | |
665 | .vidioc_queryctrl = vidioc_queryctrl, | |
666 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
667 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
668 | .vidioc_g_audio = vidioc_g_audio, | |
669 | .vidioc_s_audio = vidioc_s_audio, | |
670 | .vidioc_g_input = vidioc_g_input, | |
671 | .vidioc_s_input = vidioc_s_input, | |
672 | }; | |
673 | ||
f4e9043e AK |
674 | static void usb_amradio_device_release(struct video_device *videodev) |
675 | { | |
676 | struct amradio_device *radio = video_get_drvdata(videodev); | |
677 | ||
678 | /* we call v4l to free radio->videodev */ | |
679 | video_device_release(videodev); | |
680 | ||
681 | /* free rest memory */ | |
682 | kfree(radio->buffer); | |
683 | kfree(radio); | |
684 | } | |
685 | ||
2aa72f3b AK |
686 | /* V4L2 interface */ |
687 | static struct video_device amradio_videodev_template = { | |
688 | .name = "AverMedia MR 800 USB FM Radio", | |
689 | .fops = &usb_amradio_fops, | |
690 | .ioctl_ops = &usb_amradio_ioctl_ops, | |
f4e9043e | 691 | .release = usb_amradio_device_release, |
2aa72f3b AK |
692 | }; |
693 | ||
a5d69475 | 694 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
695 | static int usb_amradio_probe(struct usb_interface *intf, |
696 | const struct usb_device_id *id) | |
697 | { | |
698 | struct amradio_device *radio; | |
a5d69475 | 699 | int retval; |
2aa72f3b AK |
700 | |
701 | radio = kmalloc(sizeof(struct amradio_device), GFP_KERNEL); | |
702 | ||
8edafcc6 AK |
703 | if (!radio) { |
704 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
2aa72f3b | 705 | return -ENOMEM; |
8edafcc6 | 706 | } |
2aa72f3b AK |
707 | |
708 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
709 | ||
8edafcc6 AK |
710 | if (!radio->buffer) { |
711 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
2aa72f3b AK |
712 | kfree(radio); |
713 | return -ENOMEM; | |
714 | } | |
715 | ||
716 | radio->videodev = video_device_alloc(); | |
717 | ||
8edafcc6 AK |
718 | if (!radio->videodev) { |
719 | dev_err(&intf->dev, "video_device_alloc failed\n"); | |
2aa72f3b AK |
720 | kfree(radio->buffer); |
721 | kfree(radio); | |
722 | return -ENOMEM; | |
723 | } | |
724 | ||
725 | memcpy(radio->videodev, &amradio_videodev_template, | |
726 | sizeof(amradio_videodev_template)); | |
727 | ||
728 | radio->removed = 0; | |
729 | radio->users = 0; | |
730 | radio->usbdev = interface_to_usbdev(intf); | |
731 | radio->curfreq = 95.16 * FREQ_MUL; | |
1bb16d71 | 732 | radio->stereo = -1; |
2aa72f3b AK |
733 | |
734 | mutex_init(&radio->lock); | |
735 | ||
736 | video_set_drvdata(radio->videodev, radio); | |
a5d69475 AK |
737 | retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); |
738 | if (retval < 0) { | |
65c51dc9 | 739 | dev_err(&intf->dev, "could not register video device\n"); |
2aa72f3b AK |
740 | video_device_release(radio->videodev); |
741 | kfree(radio->buffer); | |
742 | kfree(radio); | |
743 | return -EIO; | |
744 | } | |
745 | ||
746 | usb_set_intfdata(intf, radio); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | static int __init amradio_init(void) | |
751 | { | |
752 | int retval = usb_register(&usb_amradio_driver); | |
753 | ||
e60b022e AK |
754 | pr_info(KBUILD_MODNAME |
755 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); | |
756 | ||
2aa72f3b | 757 | if (retval) |
e60b022e AK |
758 | pr_err(KBUILD_MODNAME |
759 | ": usb_register failed. Error number %d\n", retval); | |
760 | ||
2aa72f3b AK |
761 | return retval; |
762 | } | |
763 | ||
764 | static void __exit amradio_exit(void) | |
765 | { | |
766 | usb_deregister(&usb_amradio_driver); | |
767 | } | |
768 | ||
769 | module_init(amradio_init); | |
770 | module_exit(amradio_exit); | |
771 |