Commit | Line | Data |
---|---|---|
fc55bcb0 AK |
1 | /* A driver for the D-Link DSB-R100 USB radio and Gemtek USB Radio 21. |
2 | The device plugs into both the USB and an analog audio input, so this thing | |
1da177e4 LT |
3 | only deals with initialisation and frequency setting, the |
4 | audio data has to be handled by a sound driver. | |
5 | ||
6 | Major issue: I can't find out where the device reports the signal | |
7 | strength, and indeed the windows software appearantly just looks | |
8 | at the stereo indicator as well. So, scanning will only find | |
9 | stereo stations. Sad, but I can't help it. | |
10 | ||
11 | Also, the windows program sends oodles of messages over to the | |
12 | device, and I couldn't figure out their meaning. My suspicion | |
13 | is that they don't have any:-) | |
14 | ||
15 | You might find some interesting stuff about this module at | |
16 | http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr | |
17 | ||
18 | Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de> | |
19 | ||
20 | This program is free software; you can redistribute it and/or modify | |
21 | it under the terms of the GNU General Public License as published by | |
22 | the Free Software Foundation; either version 2 of the License, or | |
23 | (at your option) any later version. | |
24 | ||
25 | This program is distributed in the hope that it will be useful, | |
26 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | GNU General Public License for more details. | |
29 | ||
30 | You should have received a copy of the GNU General Public License | |
31 | along with this program; if not, write to the Free Software | |
32 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
33 | ||
34 | History: | |
35 | ||
6076dbf4 AK |
36 | Version 0.44: |
37 | Add suspend/resume functions, fix unplug of device, | |
38 | a lot of cleanups and fixes by Alexey Klimov <klimov.linux@gmail.com> | |
39 | ||
863c86dd ON |
40 | Version 0.43: |
41 | Oliver Neukum: avoided DMA coherency issue | |
42 | ||
7002a4f3 DL |
43 | Version 0.42: |
44 | Converted dsbr100 to use video_ioctl2 | |
45 | by Douglas Landgraf <dougsland@gmail.com> | |
46 | ||
5aff308c AC |
47 | Version 0.41-ac1: |
48 | Alan Cox: Some cleanups and fixes | |
49 | ||
50 | Version 0.41: | |
51 | Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> | |
52 | ||
1da177e4 | 53 | Version 0.40: |
5aff308c | 54 | Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing |
1da177e4 LT |
55 | |
56 | Version 0.30: | |
d56410e0 | 57 | Markus: Updates for 2.5.x kernel and more ISO compliant source |
1da177e4 LT |
58 | |
59 | Version 0.25: | |
d56410e0 | 60 | PSL and Markus: Cleanup, radio now doesn't stop on device close |
1da177e4 LT |
61 | |
62 | Version 0.24: | |
d56410e0 | 63 | Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally |
1da177e4 LT |
64 | right. Some minor cleanup, improved standalone compilation |
65 | ||
66 | Version 0.23: | |
d56410e0 | 67 | Markus: Sign extension bug fixed by declaring transfer_buffer unsigned |
1da177e4 LT |
68 | |
69 | Version 0.22: | |
d56410e0 | 70 | Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns, |
1da177e4 LT |
71 | thanks to Mike Cox for pointing the problem out. |
72 | ||
73 | Version 0.21: | |
d56410e0 | 74 | Markus: Minor cleanup, warnings if something goes wrong, lame attempt |
1da177e4 LT |
75 | to adhere to Documentation/CodingStyle |
76 | ||
d56410e0 MCC |
77 | Version 0.2: |
78 | Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module | |
1da177e4 LT |
79 | Markus: Copyright clarification |
80 | ||
81 | Version 0.01: Markus: initial release | |
82 | ||
83 | */ | |
84 | ||
1da177e4 LT |
85 | #include <linux/kernel.h> |
86 | #include <linux/module.h> | |
87 | #include <linux/init.h> | |
88 | #include <linux/slab.h> | |
89 | #include <linux/input.h> | |
5aff308c | 90 | #include <linux/videodev2.h> |
5e87efa3 | 91 | #include <media/v4l2-common.h> |
35ea11ff | 92 | #include <media/v4l2-ioctl.h> |
1da177e4 | 93 | #include <linux/usb.h> |
1da177e4 LT |
94 | |
95 | /* | |
96 | * Version Information | |
97 | */ | |
5aff308c AC |
98 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
99 | ||
6076dbf4 AK |
100 | #define DRIVER_VERSION "v0.44" |
101 | #define RADIO_VERSION KERNEL_VERSION(0, 4, 4) | |
5aff308c AC |
102 | |
103 | static struct v4l2_queryctrl radio_qctrl[] = { | |
104 | { | |
105 | .id = V4L2_CID_AUDIO_MUTE, | |
106 | .name = "Mute", | |
107 | .minimum = 0, | |
108 | .maximum = 1, | |
109 | .default_value = 1, | |
110 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
54b7b0de AK |
111 | }, |
112 | /* HINT: the disabled controls are only here to satify kradio and such apps */ | |
113 | { .id = V4L2_CID_AUDIO_VOLUME, | |
114 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
115 | }, | |
116 | { | |
117 | .id = V4L2_CID_AUDIO_BALANCE, | |
118 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
119 | }, | |
120 | { | |
121 | .id = V4L2_CID_AUDIO_BASS, | |
122 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
123 | }, | |
124 | { | |
125 | .id = V4L2_CID_AUDIO_TREBLE, | |
126 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
127 | }, | |
128 | { | |
129 | .id = V4L2_CID_AUDIO_LOUDNESS, | |
130 | .flags = V4L2_CTRL_FLAG_DISABLED, | |
131 | }, | |
5aff308c AC |
132 | }; |
133 | ||
1da177e4 LT |
134 | #define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>" |
135 | #define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver" | |
136 | ||
137 | #define DSB100_VENDOR 0x04b4 | |
138 | #define DSB100_PRODUCT 0x1002 | |
139 | ||
140 | /* Commands the device appears to understand */ | |
141 | #define DSB100_TUNE 1 | |
142 | #define DSB100_ONOFF 2 | |
143 | ||
144 | #define TB_LEN 16 | |
145 | ||
146 | /* Frequency limits in MHz -- these are European values. For Japanese | |
147 | devices, that would be 76 and 91. */ | |
148 | #define FREQ_MIN 87.5 | |
149 | #define FREQ_MAX 108.0 | |
150 | #define FREQ_MUL 16000 | |
151 | ||
3a0efc32 | 152 | #define videodev_to_radio(d) container_of(d, struct dsbr100_device, videodev) |
1da177e4 LT |
153 | |
154 | static int usb_dsbr100_probe(struct usb_interface *intf, | |
155 | const struct usb_device_id *id); | |
156 | static void usb_dsbr100_disconnect(struct usb_interface *intf); | |
1da177e4 LT |
157 | static int usb_dsbr100_open(struct inode *inode, struct file *file); |
158 | static int usb_dsbr100_close(struct inode *inode, struct file *file); | |
04e0ffbb AK |
159 | static int usb_dsbr100_suspend(struct usb_interface *intf, |
160 | pm_message_t message); | |
161 | static int usb_dsbr100_resume(struct usb_interface *intf); | |
1da177e4 LT |
162 | |
163 | static int radio_nr = -1; | |
164 | module_param(radio_nr, int, 0); | |
165 | ||
166 | /* Data for one (physical) device */ | |
5aff308c | 167 | struct dsbr100_device { |
1da177e4 | 168 | struct usb_device *usbdev; |
3a0efc32 | 169 | struct video_device videodev; |
863c86dd | 170 | u8 *transfer_buffer; |
3a0efc32 | 171 | struct mutex lock; /* buffer locking */ |
1da177e4 LT |
172 | int curfreq; |
173 | int stereo; | |
174 | int users; | |
175 | int removed; | |
5aff308c AC |
176 | int muted; |
177 | }; | |
1da177e4 | 178 | |
1da177e4 LT |
179 | static struct usb_device_id usb_dsbr100_device_table [] = { |
180 | { USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) }, | |
181 | { } /* Terminating entry */ | |
182 | }; | |
183 | ||
184 | MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table); | |
185 | ||
186 | /* USB subsystem interface */ | |
187 | static struct usb_driver usb_dsbr100_driver = { | |
04e0ffbb AK |
188 | .name = "dsbr100", |
189 | .probe = usb_dsbr100_probe, | |
190 | .disconnect = usb_dsbr100_disconnect, | |
191 | .id_table = usb_dsbr100_device_table, | |
192 | .suspend = usb_dsbr100_suspend, | |
193 | .resume = usb_dsbr100_resume, | |
194 | .reset_resume = usb_dsbr100_resume, | |
195 | .supports_autosuspend = 0, | |
1da177e4 LT |
196 | }; |
197 | ||
198 | /* Low-level device interface begins here */ | |
199 | ||
200 | /* switch on radio */ | |
5aff308c | 201 | static int dsbr100_start(struct dsbr100_device *radio) |
1da177e4 | 202 | { |
417b7953 AK |
203 | int retval; |
204 | int request; | |
205 | ||
3a0efc32 | 206 | mutex_lock(&radio->lock); |
417b7953 AK |
207 | |
208 | retval = usb_control_msg(radio->usbdev, | |
209 | usb_rcvctrlpipe(radio->usbdev, 0), | |
210 | USB_REQ_GET_STATUS, | |
211 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
212 | 0x00, 0xC7, radio->transfer_buffer, 8, 300); | |
213 | ||
214 | if (retval < 0) { | |
215 | request = USB_REQ_GET_STATUS; | |
216 | goto usb_control_msg_failed; | |
3a0efc32 AK |
217 | } |
218 | ||
417b7953 AK |
219 | retval = usb_control_msg(radio->usbdev, |
220 | usb_rcvctrlpipe(radio->usbdev, 0), | |
221 | DSB100_ONOFF, | |
222 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
223 | 0x01, 0x00, radio->transfer_buffer, 8, 300); | |
224 | ||
225 | if (retval < 0) { | |
226 | request = DSB100_ONOFF; | |
227 | goto usb_control_msg_failed; | |
228 | } | |
229 | ||
230 | radio->muted = 0; | |
3a0efc32 | 231 | mutex_unlock(&radio->lock); |
1da177e4 | 232 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
233 | |
234 | usb_control_msg_failed: | |
235 | mutex_unlock(&radio->lock); | |
236 | dev_err(&radio->usbdev->dev, | |
237 | "%s - usb_control_msg returned %i, request %i\n", | |
238 | __func__, retval, request); | |
d25cb646 | 239 | return retval; |
417b7953 | 240 | |
1da177e4 LT |
241 | } |
242 | ||
1da177e4 | 243 | /* switch off radio */ |
5aff308c | 244 | static int dsbr100_stop(struct dsbr100_device *radio) |
1da177e4 | 245 | { |
417b7953 AK |
246 | int retval; |
247 | int request; | |
248 | ||
3a0efc32 | 249 | mutex_lock(&radio->lock); |
417b7953 AK |
250 | |
251 | retval = usb_control_msg(radio->usbdev, | |
252 | usb_rcvctrlpipe(radio->usbdev, 0), | |
253 | USB_REQ_GET_STATUS, | |
254 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
255 | 0x16, 0x1C, radio->transfer_buffer, 8, 300); | |
256 | ||
257 | if (retval < 0) { | |
258 | request = USB_REQ_GET_STATUS; | |
259 | goto usb_control_msg_failed; | |
260 | } | |
261 | ||
262 | retval = usb_control_msg(radio->usbdev, | |
263 | usb_rcvctrlpipe(radio->usbdev, 0), | |
264 | DSB100_ONOFF, | |
265 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
266 | 0x00, 0x00, radio->transfer_buffer, 8, 300); | |
267 | ||
268 | if (retval < 0) { | |
269 | request = DSB100_ONOFF; | |
270 | goto usb_control_msg_failed; | |
3a0efc32 AK |
271 | } |
272 | ||
417b7953 | 273 | radio->muted = 1; |
3a0efc32 | 274 | mutex_unlock(&radio->lock); |
1da177e4 | 275 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
276 | |
277 | usb_control_msg_failed: | |
278 | mutex_unlock(&radio->lock); | |
279 | dev_err(&radio->usbdev->dev, | |
280 | "%s - usb_control_msg returned %i, request %i\n", | |
281 | __func__, retval, request); | |
d25cb646 | 282 | return retval; |
417b7953 | 283 | |
1da177e4 LT |
284 | } |
285 | ||
286 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
5aff308c | 287 | static int dsbr100_setfreq(struct dsbr100_device *radio, int freq) |
1da177e4 | 288 | { |
417b7953 AK |
289 | int retval; |
290 | int request; | |
291 | ||
223377e7 | 292 | freq = (freq / 16 * 80) / 1000 + 856; |
3a0efc32 | 293 | mutex_lock(&radio->lock); |
417b7953 AK |
294 | |
295 | retval = usb_control_msg(radio->usbdev, | |
296 | usb_rcvctrlpipe(radio->usbdev, 0), | |
297 | DSB100_TUNE, | |
298 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
299 | (freq >> 8) & 0x00ff, freq & 0xff, | |
300 | radio->transfer_buffer, 8, 300); | |
301 | ||
302 | if (retval < 0) { | |
303 | request = DSB100_TUNE; | |
304 | goto usb_control_msg_failed; | |
305 | } | |
306 | ||
307 | retval = usb_control_msg(radio->usbdev, | |
308 | usb_rcvctrlpipe(radio->usbdev, 0), | |
309 | USB_REQ_GET_STATUS, | |
310 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
311 | 0x96, 0xB7, radio->transfer_buffer, 8, 300); | |
312 | ||
313 | if (retval < 0) { | |
314 | request = USB_REQ_GET_STATUS; | |
315 | goto usb_control_msg_failed; | |
316 | } | |
317 | ||
318 | retval = usb_control_msg(radio->usbdev, | |
319 | usb_rcvctrlpipe(radio->usbdev, 0), | |
320 | USB_REQ_GET_STATUS, | |
321 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
322 | 0x00, 0x24, radio->transfer_buffer, 8, 300); | |
323 | ||
324 | if (retval < 0) { | |
325 | request = USB_REQ_GET_STATUS; | |
326 | goto usb_control_msg_failed; | |
1da177e4 | 327 | } |
3a0efc32 | 328 | |
223377e7 | 329 | radio->stereo = !((radio->transfer_buffer)[0] & 0x01); |
3a0efc32 | 330 | mutex_unlock(&radio->lock); |
1da177e4 | 331 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
332 | |
333 | usb_control_msg_failed: | |
334 | radio->stereo = -1; | |
335 | mutex_unlock(&radio->lock); | |
336 | dev_err(&radio->usbdev->dev, | |
337 | "%s - usb_control_msg returned %i, request %i\n", | |
338 | __func__, retval, request); | |
d25cb646 | 339 | return retval; |
1da177e4 LT |
340 | } |
341 | ||
342 | /* return the device status. This is, in effect, just whether it | |
343 | sees a stereo signal or not. Pity. */ | |
5aff308c | 344 | static void dsbr100_getstat(struct dsbr100_device *radio) |
1da177e4 | 345 | { |
417b7953 AK |
346 | int retval; |
347 | ||
3a0efc32 | 348 | mutex_lock(&radio->lock); |
417b7953 AK |
349 | |
350 | retval = usb_control_msg(radio->usbdev, | |
351 | usb_rcvctrlpipe(radio->usbdev, 0), | |
d56410e0 | 352 | USB_REQ_GET_STATUS, |
1da177e4 | 353 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
417b7953 AK |
354 | 0x00 , 0x24, radio->transfer_buffer, 8, 300); |
355 | ||
356 | if (retval < 0) { | |
1da177e4 | 357 | radio->stereo = -1; |
417b7953 AK |
358 | dev_err(&radio->usbdev->dev, |
359 | "%s - usb_control_msg returned %i, request %i\n", | |
360 | __func__, retval, USB_REQ_GET_STATUS); | |
361 | } else { | |
223377e7 | 362 | radio->stereo = !(radio->transfer_buffer[0] & 0x01); |
417b7953 AK |
363 | } |
364 | ||
3a0efc32 | 365 | mutex_unlock(&radio->lock); |
1da177e4 LT |
366 | } |
367 | ||
1da177e4 LT |
368 | /* USB subsystem interface begins here */ |
369 | ||
fc55bcb0 AK |
370 | /* |
371 | * Handle unplugging of the device. | |
372 | * We call video_unregister_device in any case. | |
373 | * The last function called in this procedure is | |
374 | * usb_dsbr100_video_device_release | |
375 | */ | |
1da177e4 LT |
376 | static void usb_dsbr100_disconnect(struct usb_interface *intf) |
377 | { | |
5aff308c | 378 | struct dsbr100_device *radio = usb_get_intfdata(intf); |
1da177e4 LT |
379 | |
380 | usb_set_intfdata (intf, NULL); | |
3a0efc32 AK |
381 | |
382 | mutex_lock(&radio->lock); | |
383 | radio->removed = 1; | |
384 | mutex_unlock(&radio->lock); | |
385 | ||
386 | video_unregister_device(&radio->videodev); | |
1da177e4 LT |
387 | } |
388 | ||
389 | ||
7002a4f3 DL |
390 | static int vidioc_querycap(struct file *file, void *priv, |
391 | struct v4l2_capability *v) | |
392 | { | |
393 | strlcpy(v->driver, "dsbr100", sizeof(v->driver)); | |
394 | strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card)); | |
448441cf | 395 | sprintf(v->bus_info, "USB"); |
7002a4f3 DL |
396 | v->version = RADIO_VERSION; |
397 | v->capabilities = V4L2_CAP_TUNER; | |
398 | return 0; | |
399 | } | |
1da177e4 | 400 | |
7002a4f3 DL |
401 | static int vidioc_g_tuner(struct file *file, void *priv, |
402 | struct v4l2_tuner *v) | |
1da177e4 | 403 | { |
c170ecf4 | 404 | struct dsbr100_device *radio = video_drvdata(file); |
7002a4f3 | 405 | |
3a0efc32 AK |
406 | /* safety check */ |
407 | if (radio->removed) | |
408 | return -EIO; | |
409 | ||
7002a4f3 DL |
410 | if (v->index > 0) |
411 | return -EINVAL; | |
412 | ||
413 | dsbr100_getstat(radio); | |
414 | strcpy(v->name, "FM"); | |
415 | v->type = V4L2_TUNER_RADIO; | |
223377e7 AK |
416 | v->rangelow = FREQ_MIN * FREQ_MUL; |
417 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
418 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
7002a4f3 DL |
419 | v->capability = V4L2_TUNER_CAP_LOW; |
420 | if(radio->stereo) | |
421 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
422 | else | |
423 | v->audmode = V4L2_TUNER_MODE_MONO; | |
424 | v->signal = 0xffff; /* We can't get the signal strength */ | |
425 | return 0; | |
426 | } | |
1da177e4 | 427 | |
7002a4f3 DL |
428 | static int vidioc_s_tuner(struct file *file, void *priv, |
429 | struct v4l2_tuner *v) | |
430 | { | |
3a0efc32 AK |
431 | struct dsbr100_device *radio = video_drvdata(file); |
432 | ||
433 | /* safety check */ | |
434 | if (radio->removed) | |
435 | return -EIO; | |
436 | ||
7002a4f3 DL |
437 | if (v->index > 0) |
438 | return -EINVAL; | |
1da177e4 | 439 | |
7002a4f3 DL |
440 | return 0; |
441 | } | |
5aff308c | 442 | |
7002a4f3 DL |
443 | static int vidioc_s_frequency(struct file *file, void *priv, |
444 | struct v4l2_frequency *f) | |
445 | { | |
c170ecf4 | 446 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 447 | int retval; |
1da177e4 | 448 | |
3a0efc32 AK |
449 | /* safety check */ |
450 | if (radio->removed) | |
451 | return -EIO; | |
452 | ||
7002a4f3 | 453 | radio->curfreq = f->frequency; |
417b7953 | 454 | retval = dsbr100_setfreq(radio, radio->curfreq); |
d25cb646 | 455 | if (retval < 0) |
aa82661b | 456 | dev_warn(&radio->usbdev->dev, "Set frequency failed\n"); |
7002a4f3 DL |
457 | return 0; |
458 | } | |
5aff308c | 459 | |
7002a4f3 DL |
460 | static int vidioc_g_frequency(struct file *file, void *priv, |
461 | struct v4l2_frequency *f) | |
462 | { | |
c170ecf4 | 463 | struct dsbr100_device *radio = video_drvdata(file); |
5aff308c | 464 | |
3a0efc32 AK |
465 | /* safety check */ |
466 | if (radio->removed) | |
467 | return -EIO; | |
468 | ||
7002a4f3 DL |
469 | f->type = V4L2_TUNER_RADIO; |
470 | f->frequency = radio->curfreq; | |
471 | return 0; | |
472 | } | |
5aff308c | 473 | |
7002a4f3 DL |
474 | static int vidioc_queryctrl(struct file *file, void *priv, |
475 | struct v4l2_queryctrl *qc) | |
476 | { | |
477 | int i; | |
1da177e4 | 478 | |
7002a4f3 DL |
479 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
480 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
223377e7 | 481 | memcpy(qc, &(radio_qctrl[i]), sizeof(*qc)); |
1da177e4 LT |
482 | return 0; |
483 | } | |
7002a4f3 DL |
484 | } |
485 | return -EINVAL; | |
486 | } | |
5aff308c | 487 | |
7002a4f3 DL |
488 | static int vidioc_g_ctrl(struct file *file, void *priv, |
489 | struct v4l2_control *ctrl) | |
490 | { | |
c170ecf4 | 491 | struct dsbr100_device *radio = video_drvdata(file); |
1da177e4 | 492 | |
3a0efc32 AK |
493 | /* safety check */ |
494 | if (radio->removed) | |
495 | return -EIO; | |
496 | ||
7002a4f3 DL |
497 | switch (ctrl->id) { |
498 | case V4L2_CID_AUDIO_MUTE: | |
499 | ctrl->value = radio->muted; | |
500 | return 0; | |
501 | } | |
502 | return -EINVAL; | |
503 | } | |
5aff308c | 504 | |
7002a4f3 DL |
505 | static int vidioc_s_ctrl(struct file *file, void *priv, |
506 | struct v4l2_control *ctrl) | |
507 | { | |
c170ecf4 | 508 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 509 | int retval; |
5aff308c | 510 | |
3a0efc32 AK |
511 | /* safety check */ |
512 | if (radio->removed) | |
513 | return -EIO; | |
514 | ||
7002a4f3 DL |
515 | switch (ctrl->id) { |
516 | case V4L2_CID_AUDIO_MUTE: | |
517 | if (ctrl->value) { | |
417b7953 | 518 | retval = dsbr100_stop(radio); |
d25cb646 | 519 | if (retval < 0) { |
aa82661b GKH |
520 | dev_warn(&radio->usbdev->dev, |
521 | "Radio did not respond properly\n"); | |
90b698dd AK |
522 | return -EBUSY; |
523 | } | |
7002a4f3 | 524 | } else { |
417b7953 | 525 | retval = dsbr100_start(radio); |
d25cb646 | 526 | if (retval < 0) { |
aa82661b GKH |
527 | dev_warn(&radio->usbdev->dev, |
528 | "Radio did not respond properly\n"); | |
90b698dd AK |
529 | return -EBUSY; |
530 | } | |
1da177e4 | 531 | } |
7002a4f3 | 532 | return 0; |
1da177e4 | 533 | } |
7002a4f3 | 534 | return -EINVAL; |
1da177e4 LT |
535 | } |
536 | ||
7002a4f3 DL |
537 | static int vidioc_g_audio(struct file *file, void *priv, |
538 | struct v4l2_audio *a) | |
1da177e4 | 539 | { |
7002a4f3 DL |
540 | if (a->index > 1) |
541 | return -EINVAL; | |
542 | ||
543 | strcpy(a->name, "Radio"); | |
544 | a->capability = V4L2_AUDCAP_STEREO; | |
545 | return 0; | |
546 | } | |
547 | ||
548 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
549 | { | |
550 | *i = 0; | |
551 | return 0; | |
552 | } | |
553 | ||
554 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
555 | { | |
556 | if (i != 0) | |
557 | return -EINVAL; | |
558 | return 0; | |
559 | } | |
560 | ||
561 | static int vidioc_s_audio(struct file *file, void *priv, | |
562 | struct v4l2_audio *a) | |
563 | { | |
564 | if (a->index != 0) | |
565 | return -EINVAL; | |
566 | return 0; | |
1da177e4 LT |
567 | } |
568 | ||
569 | static int usb_dsbr100_open(struct inode *inode, struct file *file) | |
570 | { | |
c170ecf4 | 571 | struct dsbr100_device *radio = video_drvdata(file); |
b9f35737 | 572 | int retval; |
1da177e4 | 573 | |
d56dc612 | 574 | lock_kernel(); |
1da177e4 | 575 | radio->users = 1; |
5aff308c AC |
576 | radio->muted = 1; |
577 | ||
417b7953 AK |
578 | retval = dsbr100_start(radio); |
579 | if (retval < 0) { | |
aa82661b GKH |
580 | dev_warn(&radio->usbdev->dev, |
581 | "Radio did not start up properly\n"); | |
1da177e4 | 582 | radio->users = 0; |
d56dc612 | 583 | unlock_kernel(); |
1da177e4 LT |
584 | return -EIO; |
585 | } | |
b9f35737 AK |
586 | |
587 | retval = dsbr100_setfreq(radio, radio->curfreq); | |
d25cb646 | 588 | if (retval < 0) |
290588e0 AK |
589 | dev_warn(&radio->usbdev->dev, |
590 | "set frequency failed\n"); | |
b9f35737 | 591 | |
d56dc612 | 592 | unlock_kernel(); |
1da177e4 LT |
593 | return 0; |
594 | } | |
595 | ||
596 | static int usb_dsbr100_close(struct inode *inode, struct file *file) | |
597 | { | |
c170ecf4 | 598 | struct dsbr100_device *radio = video_drvdata(file); |
3a0efc32 | 599 | int retval; |
1da177e4 LT |
600 | |
601 | if (!radio) | |
602 | return -ENODEV; | |
3a0efc32 | 603 | |
1da177e4 | 604 | radio->users = 0; |
3a0efc32 AK |
605 | if (!radio->removed) { |
606 | retval = dsbr100_stop(radio); | |
d25cb646 | 607 | if (retval < 0) { |
3a0efc32 AK |
608 | dev_warn(&radio->usbdev->dev, |
609 | "dsbr100_stop failed\n"); | |
610 | } | |
611 | ||
1da177e4 LT |
612 | } |
613 | return 0; | |
614 | } | |
615 | ||
04e0ffbb AK |
616 | /* Suspend device - stop device. */ |
617 | static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message) | |
618 | { | |
619 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
620 | int retval; | |
621 | ||
622 | retval = dsbr100_stop(radio); | |
d25cb646 | 623 | if (retval < 0) |
04e0ffbb AK |
624 | dev_warn(&intf->dev, "dsbr100_stop failed\n"); |
625 | ||
626 | dev_info(&intf->dev, "going into suspend..\n"); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | /* Resume device - start device. */ | |
632 | static int usb_dsbr100_resume(struct usb_interface *intf) | |
633 | { | |
634 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
635 | int retval; | |
636 | ||
637 | retval = dsbr100_start(radio); | |
d25cb646 | 638 | if (retval < 0) |
04e0ffbb AK |
639 | dev_warn(&intf->dev, "dsbr100_start failed\n"); |
640 | ||
641 | dev_info(&intf->dev, "coming out of suspend..\n"); | |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
fc55bcb0 | 646 | /* free data structures */ |
3a0efc32 AK |
647 | static void usb_dsbr100_video_device_release(struct video_device *videodev) |
648 | { | |
649 | struct dsbr100_device *radio = videodev_to_radio(videodev); | |
650 | ||
651 | kfree(radio->transfer_buffer); | |
652 | kfree(radio); | |
653 | } | |
654 | ||
7002a4f3 DL |
655 | /* File system interface */ |
656 | static const struct file_operations usb_dsbr100_fops = { | |
657 | .owner = THIS_MODULE, | |
658 | .open = usb_dsbr100_open, | |
659 | .release = usb_dsbr100_close, | |
660 | .ioctl = video_ioctl2, | |
078ff795 | 661 | #ifdef CONFIG_COMPAT |
7002a4f3 | 662 | .compat_ioctl = v4l_compat_ioctl32, |
078ff795 | 663 | #endif |
7002a4f3 DL |
664 | .llseek = no_llseek, |
665 | }; | |
666 | ||
a399810c | 667 | static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = { |
7002a4f3 DL |
668 | .vidioc_querycap = vidioc_querycap, |
669 | .vidioc_g_tuner = vidioc_g_tuner, | |
670 | .vidioc_s_tuner = vidioc_s_tuner, | |
671 | .vidioc_g_frequency = vidioc_g_frequency, | |
672 | .vidioc_s_frequency = vidioc_s_frequency, | |
673 | .vidioc_queryctrl = vidioc_queryctrl, | |
674 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
675 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
676 | .vidioc_g_audio = vidioc_g_audio, | |
677 | .vidioc_s_audio = vidioc_s_audio, | |
678 | .vidioc_g_input = vidioc_g_input, | |
679 | .vidioc_s_input = vidioc_s_input, | |
680 | }; | |
681 | ||
a399810c | 682 | /* V4L2 interface */ |
3a0efc32 | 683 | static struct video_device dsbr100_videodev_data = { |
a399810c | 684 | .name = "D-Link DSB-R 100", |
a399810c HV |
685 | .fops = &usb_dsbr100_fops, |
686 | .ioctl_ops = &usb_dsbr100_ioctl_ops, | |
3a0efc32 | 687 | .release = usb_dsbr100_video_device_release, |
a399810c HV |
688 | }; |
689 | ||
fc55bcb0 | 690 | /* check if the device is present and register with v4l and usb if it is */ |
7002a4f3 DL |
691 | static int usb_dsbr100_probe(struct usb_interface *intf, |
692 | const struct usb_device_id *id) | |
693 | { | |
694 | struct dsbr100_device *radio; | |
417b7953 | 695 | int retval; |
7002a4f3 | 696 | |
223377e7 AK |
697 | radio = kmalloc(sizeof(struct dsbr100_device), GFP_KERNEL); |
698 | ||
699 | if (!radio) | |
7002a4f3 | 700 | return -ENOMEM; |
223377e7 AK |
701 | |
702 | radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); | |
703 | ||
704 | if (!(radio->transfer_buffer)) { | |
863c86dd ON |
705 | kfree(radio); |
706 | return -ENOMEM; | |
707 | } | |
223377e7 | 708 | |
3a0efc32 AK |
709 | mutex_init(&radio->lock); |
710 | radio->videodev = dsbr100_videodev_data; | |
711 | ||
7002a4f3 DL |
712 | radio->removed = 0; |
713 | radio->users = 0; | |
714 | radio->usbdev = interface_to_usbdev(intf); | |
223377e7 | 715 | radio->curfreq = FREQ_MIN * FREQ_MUL; |
3a0efc32 | 716 | video_set_drvdata(&radio->videodev, radio); |
417b7953 AK |
717 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); |
718 | if (retval < 0) { | |
7e1ca849 | 719 | dev_err(&intf->dev, "couldn't register video device\n"); |
863c86dd | 720 | kfree(radio->transfer_buffer); |
7002a4f3 DL |
721 | kfree(radio); |
722 | return -EIO; | |
723 | } | |
724 | usb_set_intfdata(intf, radio); | |
725 | return 0; | |
726 | } | |
727 | ||
1da177e4 LT |
728 | static int __init dsbr100_init(void) |
729 | { | |
730 | int retval = usb_register(&usb_dsbr100_driver); | |
a482f327 GKH |
731 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
732 | DRIVER_DESC "\n"); | |
1da177e4 LT |
733 | return retval; |
734 | } | |
735 | ||
736 | static void __exit dsbr100_exit(void) | |
737 | { | |
738 | usb_deregister(&usb_dsbr100_driver); | |
739 | } | |
740 | ||
741 | module_init (dsbr100_init); | |
742 | module_exit (dsbr100_exit); | |
743 | ||
744 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
745 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
746 | MODULE_LICENSE("GPL"); |