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 | ||
f1ca0adf AK |
36 | Version 0.46: |
37 | Removed usb_dsbr100_open/close calls and radio->users counter. Also, | |
38 | radio->muted changed to radio->status and suspend/resume calls updated. | |
39 | ||
406827cc AK |
40 | Version 0.45: |
41 | Converted to v4l2_device. | |
42 | ||
6076dbf4 AK |
43 | Version 0.44: |
44 | Add suspend/resume functions, fix unplug of device, | |
45 | a lot of cleanups and fixes by Alexey Klimov <klimov.linux@gmail.com> | |
46 | ||
863c86dd ON |
47 | Version 0.43: |
48 | Oliver Neukum: avoided DMA coherency issue | |
49 | ||
7002a4f3 DL |
50 | Version 0.42: |
51 | Converted dsbr100 to use video_ioctl2 | |
52 | by Douglas Landgraf <dougsland@gmail.com> | |
53 | ||
5aff308c AC |
54 | Version 0.41-ac1: |
55 | Alan Cox: Some cleanups and fixes | |
56 | ||
57 | Version 0.41: | |
58 | Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> | |
59 | ||
1da177e4 | 60 | Version 0.40: |
5aff308c | 61 | Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing |
1da177e4 LT |
62 | |
63 | Version 0.30: | |
d56410e0 | 64 | Markus: Updates for 2.5.x kernel and more ISO compliant source |
1da177e4 LT |
65 | |
66 | Version 0.25: | |
d56410e0 | 67 | PSL and Markus: Cleanup, radio now doesn't stop on device close |
1da177e4 LT |
68 | |
69 | Version 0.24: | |
d56410e0 | 70 | Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally |
1da177e4 LT |
71 | right. Some minor cleanup, improved standalone compilation |
72 | ||
73 | Version 0.23: | |
d56410e0 | 74 | Markus: Sign extension bug fixed by declaring transfer_buffer unsigned |
1da177e4 LT |
75 | |
76 | Version 0.22: | |
d56410e0 | 77 | Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns, |
1da177e4 LT |
78 | thanks to Mike Cox for pointing the problem out. |
79 | ||
80 | Version 0.21: | |
d56410e0 | 81 | Markus: Minor cleanup, warnings if something goes wrong, lame attempt |
1da177e4 LT |
82 | to adhere to Documentation/CodingStyle |
83 | ||
d56410e0 MCC |
84 | Version 0.2: |
85 | Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module | |
1da177e4 LT |
86 | Markus: Copyright clarification |
87 | ||
88 | Version 0.01: Markus: initial release | |
89 | ||
90 | */ | |
91 | ||
1da177e4 LT |
92 | #include <linux/kernel.h> |
93 | #include <linux/module.h> | |
94 | #include <linux/init.h> | |
95 | #include <linux/slab.h> | |
96 | #include <linux/input.h> | |
5aff308c | 97 | #include <linux/videodev2.h> |
406827cc | 98 | #include <media/v4l2-device.h> |
35ea11ff | 99 | #include <media/v4l2-ioctl.h> |
1da177e4 | 100 | #include <linux/usb.h> |
1da177e4 LT |
101 | |
102 | /* | |
103 | * Version Information | |
104 | */ | |
5aff308c AC |
105 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
106 | ||
f1ca0adf AK |
107 | #define DRIVER_VERSION "v0.46" |
108 | #define RADIO_VERSION KERNEL_VERSION(0, 4, 6) | |
5aff308c | 109 | |
1da177e4 LT |
110 | #define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>" |
111 | #define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver" | |
112 | ||
113 | #define DSB100_VENDOR 0x04b4 | |
114 | #define DSB100_PRODUCT 0x1002 | |
115 | ||
116 | /* Commands the device appears to understand */ | |
117 | #define DSB100_TUNE 1 | |
118 | #define DSB100_ONOFF 2 | |
119 | ||
120 | #define TB_LEN 16 | |
121 | ||
122 | /* Frequency limits in MHz -- these are European values. For Japanese | |
123 | devices, that would be 76 and 91. */ | |
124 | #define FREQ_MIN 87.5 | |
125 | #define FREQ_MAX 108.0 | |
126 | #define FREQ_MUL 16000 | |
127 | ||
f1ca0adf AK |
128 | /* defines for radio->status */ |
129 | #define STARTED 0 | |
130 | #define STOPPED 1 | |
131 | ||
13099294 | 132 | #define v4l2_dev_to_radio(d) container_of(d, struct dsbr100_device, v4l2_dev) |
1da177e4 LT |
133 | |
134 | static int usb_dsbr100_probe(struct usb_interface *intf, | |
135 | const struct usb_device_id *id); | |
136 | static void usb_dsbr100_disconnect(struct usb_interface *intf); | |
04e0ffbb AK |
137 | static int usb_dsbr100_suspend(struct usb_interface *intf, |
138 | pm_message_t message); | |
139 | static int usb_dsbr100_resume(struct usb_interface *intf); | |
1da177e4 LT |
140 | |
141 | static int radio_nr = -1; | |
142 | module_param(radio_nr, int, 0); | |
143 | ||
144 | /* Data for one (physical) device */ | |
5aff308c | 145 | struct dsbr100_device { |
1da177e4 | 146 | struct usb_device *usbdev; |
3a0efc32 | 147 | struct video_device videodev; |
406827cc AK |
148 | struct v4l2_device v4l2_dev; |
149 | ||
863c86dd | 150 | u8 *transfer_buffer; |
e64d07c9 | 151 | struct mutex v4l2_lock; |
1da177e4 LT |
152 | int curfreq; |
153 | int stereo; | |
f1ca0adf | 154 | int status; |
5aff308c | 155 | }; |
1da177e4 | 156 | |
1da177e4 LT |
157 | static struct usb_device_id usb_dsbr100_device_table [] = { |
158 | { USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) }, | |
159 | { } /* Terminating entry */ | |
160 | }; | |
161 | ||
162 | MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table); | |
163 | ||
164 | /* USB subsystem interface */ | |
165 | static struct usb_driver usb_dsbr100_driver = { | |
04e0ffbb AK |
166 | .name = "dsbr100", |
167 | .probe = usb_dsbr100_probe, | |
168 | .disconnect = usb_dsbr100_disconnect, | |
169 | .id_table = usb_dsbr100_device_table, | |
170 | .suspend = usb_dsbr100_suspend, | |
171 | .resume = usb_dsbr100_resume, | |
172 | .reset_resume = usb_dsbr100_resume, | |
173 | .supports_autosuspend = 0, | |
1da177e4 LT |
174 | }; |
175 | ||
176 | /* Low-level device interface begins here */ | |
177 | ||
178 | /* switch on radio */ | |
5aff308c | 179 | static int dsbr100_start(struct dsbr100_device *radio) |
1da177e4 | 180 | { |
417b7953 AK |
181 | int retval; |
182 | int request; | |
183 | ||
417b7953 AK |
184 | retval = usb_control_msg(radio->usbdev, |
185 | usb_rcvctrlpipe(radio->usbdev, 0), | |
186 | USB_REQ_GET_STATUS, | |
187 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
188 | 0x00, 0xC7, radio->transfer_buffer, 8, 300); | |
189 | ||
190 | if (retval < 0) { | |
191 | request = USB_REQ_GET_STATUS; | |
192 | goto usb_control_msg_failed; | |
3a0efc32 AK |
193 | } |
194 | ||
417b7953 AK |
195 | retval = usb_control_msg(radio->usbdev, |
196 | usb_rcvctrlpipe(radio->usbdev, 0), | |
197 | DSB100_ONOFF, | |
198 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
199 | 0x01, 0x00, radio->transfer_buffer, 8, 300); | |
200 | ||
201 | if (retval < 0) { | |
202 | request = DSB100_ONOFF; | |
203 | goto usb_control_msg_failed; | |
204 | } | |
205 | ||
f1ca0adf | 206 | radio->status = STARTED; |
1da177e4 | 207 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
208 | |
209 | usb_control_msg_failed: | |
417b7953 AK |
210 | dev_err(&radio->usbdev->dev, |
211 | "%s - usb_control_msg returned %i, request %i\n", | |
212 | __func__, retval, request); | |
d25cb646 | 213 | return retval; |
417b7953 | 214 | |
1da177e4 LT |
215 | } |
216 | ||
1da177e4 | 217 | /* switch off radio */ |
5aff308c | 218 | static int dsbr100_stop(struct dsbr100_device *radio) |
1da177e4 | 219 | { |
417b7953 AK |
220 | int retval; |
221 | int request; | |
222 | ||
417b7953 AK |
223 | retval = usb_control_msg(radio->usbdev, |
224 | usb_rcvctrlpipe(radio->usbdev, 0), | |
225 | USB_REQ_GET_STATUS, | |
226 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
227 | 0x16, 0x1C, radio->transfer_buffer, 8, 300); | |
228 | ||
229 | if (retval < 0) { | |
230 | request = USB_REQ_GET_STATUS; | |
231 | goto usb_control_msg_failed; | |
232 | } | |
233 | ||
234 | retval = usb_control_msg(radio->usbdev, | |
235 | usb_rcvctrlpipe(radio->usbdev, 0), | |
236 | DSB100_ONOFF, | |
237 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
238 | 0x00, 0x00, radio->transfer_buffer, 8, 300); | |
239 | ||
240 | if (retval < 0) { | |
241 | request = DSB100_ONOFF; | |
242 | goto usb_control_msg_failed; | |
3a0efc32 AK |
243 | } |
244 | ||
f1ca0adf | 245 | radio->status = STOPPED; |
1da177e4 | 246 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
247 | |
248 | usb_control_msg_failed: | |
417b7953 AK |
249 | dev_err(&radio->usbdev->dev, |
250 | "%s - usb_control_msg returned %i, request %i\n", | |
251 | __func__, retval, request); | |
d25cb646 | 252 | return retval; |
417b7953 | 253 | |
1da177e4 LT |
254 | } |
255 | ||
256 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
917fab4f | 257 | static int dsbr100_setfreq(struct dsbr100_device *radio) |
1da177e4 | 258 | { |
417b7953 AK |
259 | int retval; |
260 | int request; | |
917fab4f | 261 | int freq = (radio->curfreq / 16 * 80) / 1000 + 856; |
417b7953 | 262 | |
417b7953 AK |
263 | retval = usb_control_msg(radio->usbdev, |
264 | usb_rcvctrlpipe(radio->usbdev, 0), | |
265 | DSB100_TUNE, | |
266 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
267 | (freq >> 8) & 0x00ff, freq & 0xff, | |
268 | radio->transfer_buffer, 8, 300); | |
269 | ||
270 | if (retval < 0) { | |
271 | request = DSB100_TUNE; | |
272 | goto usb_control_msg_failed; | |
273 | } | |
274 | ||
275 | retval = usb_control_msg(radio->usbdev, | |
276 | usb_rcvctrlpipe(radio->usbdev, 0), | |
277 | USB_REQ_GET_STATUS, | |
278 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
279 | 0x96, 0xB7, radio->transfer_buffer, 8, 300); | |
280 | ||
281 | if (retval < 0) { | |
282 | request = USB_REQ_GET_STATUS; | |
283 | goto usb_control_msg_failed; | |
284 | } | |
285 | ||
286 | retval = usb_control_msg(radio->usbdev, | |
287 | usb_rcvctrlpipe(radio->usbdev, 0), | |
288 | USB_REQ_GET_STATUS, | |
289 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
290 | 0x00, 0x24, radio->transfer_buffer, 8, 300); | |
291 | ||
292 | if (retval < 0) { | |
293 | request = USB_REQ_GET_STATUS; | |
294 | goto usb_control_msg_failed; | |
1da177e4 | 295 | } |
3a0efc32 | 296 | |
223377e7 | 297 | radio->stereo = !((radio->transfer_buffer)[0] & 0x01); |
1da177e4 | 298 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
299 | |
300 | usb_control_msg_failed: | |
301 | radio->stereo = -1; | |
417b7953 AK |
302 | dev_err(&radio->usbdev->dev, |
303 | "%s - usb_control_msg returned %i, request %i\n", | |
304 | __func__, retval, request); | |
d25cb646 | 305 | return retval; |
1da177e4 LT |
306 | } |
307 | ||
308 | /* return the device status. This is, in effect, just whether it | |
309 | sees a stereo signal or not. Pity. */ | |
5aff308c | 310 | static void dsbr100_getstat(struct dsbr100_device *radio) |
1da177e4 | 311 | { |
417b7953 AK |
312 | int retval; |
313 | ||
417b7953 AK |
314 | retval = usb_control_msg(radio->usbdev, |
315 | usb_rcvctrlpipe(radio->usbdev, 0), | |
d56410e0 | 316 | USB_REQ_GET_STATUS, |
1da177e4 | 317 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
417b7953 AK |
318 | 0x00 , 0x24, radio->transfer_buffer, 8, 300); |
319 | ||
320 | if (retval < 0) { | |
1da177e4 | 321 | radio->stereo = -1; |
417b7953 AK |
322 | dev_err(&radio->usbdev->dev, |
323 | "%s - usb_control_msg returned %i, request %i\n", | |
324 | __func__, retval, USB_REQ_GET_STATUS); | |
325 | } else { | |
223377e7 | 326 | radio->stereo = !(radio->transfer_buffer[0] & 0x01); |
417b7953 | 327 | } |
1da177e4 LT |
328 | } |
329 | ||
7002a4f3 DL |
330 | static int vidioc_querycap(struct file *file, void *priv, |
331 | struct v4l2_capability *v) | |
332 | { | |
c7181cfa AK |
333 | struct dsbr100_device *radio = video_drvdata(file); |
334 | ||
7002a4f3 DL |
335 | strlcpy(v->driver, "dsbr100", sizeof(v->driver)); |
336 | strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 337 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
7002a4f3 DL |
338 | v->version = RADIO_VERSION; |
339 | v->capabilities = V4L2_CAP_TUNER; | |
340 | return 0; | |
341 | } | |
1da177e4 | 342 | |
7002a4f3 DL |
343 | static int vidioc_g_tuner(struct file *file, void *priv, |
344 | struct v4l2_tuner *v) | |
1da177e4 | 345 | { |
c170ecf4 | 346 | struct dsbr100_device *radio = video_drvdata(file); |
7002a4f3 DL |
347 | |
348 | if (v->index > 0) | |
349 | return -EINVAL; | |
350 | ||
351 | dsbr100_getstat(radio); | |
352 | strcpy(v->name, "FM"); | |
353 | v->type = V4L2_TUNER_RADIO; | |
223377e7 AK |
354 | v->rangelow = FREQ_MIN * FREQ_MUL; |
355 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
356 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
7002a4f3 DL |
357 | v->capability = V4L2_TUNER_CAP_LOW; |
358 | if(radio->stereo) | |
359 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
360 | else | |
361 | v->audmode = V4L2_TUNER_MODE_MONO; | |
362 | v->signal = 0xffff; /* We can't get the signal strength */ | |
363 | return 0; | |
364 | } | |
1da177e4 | 365 | |
7002a4f3 DL |
366 | static int vidioc_s_tuner(struct file *file, void *priv, |
367 | struct v4l2_tuner *v) | |
368 | { | |
13099294 | 369 | return v->index ? -EINVAL : 0; |
7002a4f3 | 370 | } |
5aff308c | 371 | |
7002a4f3 DL |
372 | static int vidioc_s_frequency(struct file *file, void *priv, |
373 | struct v4l2_frequency *f) | |
374 | { | |
c170ecf4 | 375 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 376 | int retval; |
1da177e4 | 377 | |
7002a4f3 | 378 | radio->curfreq = f->frequency; |
fdf9c997 | 379 | |
917fab4f | 380 | retval = dsbr100_setfreq(radio); |
d25cb646 | 381 | if (retval < 0) |
aa82661b | 382 | dev_warn(&radio->usbdev->dev, "Set frequency failed\n"); |
7002a4f3 DL |
383 | return 0; |
384 | } | |
5aff308c | 385 | |
7002a4f3 DL |
386 | static int vidioc_g_frequency(struct file *file, void *priv, |
387 | struct v4l2_frequency *f) | |
388 | { | |
c170ecf4 | 389 | struct dsbr100_device *radio = video_drvdata(file); |
5aff308c | 390 | |
7002a4f3 DL |
391 | f->type = V4L2_TUNER_RADIO; |
392 | f->frequency = radio->curfreq; | |
393 | return 0; | |
394 | } | |
5aff308c | 395 | |
7002a4f3 DL |
396 | static int vidioc_queryctrl(struct file *file, void *priv, |
397 | struct v4l2_queryctrl *qc) | |
398 | { | |
406827cc AK |
399 | switch (qc->id) { |
400 | case V4L2_CID_AUDIO_MUTE: | |
401 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
7002a4f3 | 402 | } |
406827cc | 403 | |
7002a4f3 DL |
404 | return -EINVAL; |
405 | } | |
5aff308c | 406 | |
7002a4f3 DL |
407 | static int vidioc_g_ctrl(struct file *file, void *priv, |
408 | struct v4l2_control *ctrl) | |
409 | { | |
c170ecf4 | 410 | struct dsbr100_device *radio = video_drvdata(file); |
1da177e4 | 411 | |
7002a4f3 DL |
412 | switch (ctrl->id) { |
413 | case V4L2_CID_AUDIO_MUTE: | |
f1ca0adf | 414 | ctrl->value = radio->status; |
7002a4f3 DL |
415 | return 0; |
416 | } | |
417 | return -EINVAL; | |
418 | } | |
5aff308c | 419 | |
7002a4f3 DL |
420 | static int vidioc_s_ctrl(struct file *file, void *priv, |
421 | struct v4l2_control *ctrl) | |
422 | { | |
c170ecf4 | 423 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 424 | int retval; |
5aff308c | 425 | |
7002a4f3 DL |
426 | switch (ctrl->id) { |
427 | case V4L2_CID_AUDIO_MUTE: | |
428 | if (ctrl->value) { | |
417b7953 | 429 | retval = dsbr100_stop(radio); |
d25cb646 | 430 | if (retval < 0) { |
aa82661b GKH |
431 | dev_warn(&radio->usbdev->dev, |
432 | "Radio did not respond properly\n"); | |
90b698dd AK |
433 | return -EBUSY; |
434 | } | |
7002a4f3 | 435 | } else { |
417b7953 | 436 | retval = dsbr100_start(radio); |
d25cb646 | 437 | if (retval < 0) { |
aa82661b GKH |
438 | dev_warn(&radio->usbdev->dev, |
439 | "Radio did not respond properly\n"); | |
90b698dd AK |
440 | return -EBUSY; |
441 | } | |
1da177e4 | 442 | } |
7002a4f3 | 443 | return 0; |
1da177e4 | 444 | } |
7002a4f3 | 445 | return -EINVAL; |
1da177e4 LT |
446 | } |
447 | ||
7002a4f3 DL |
448 | static int vidioc_g_audio(struct file *file, void *priv, |
449 | struct v4l2_audio *a) | |
1da177e4 | 450 | { |
7002a4f3 DL |
451 | if (a->index > 1) |
452 | return -EINVAL; | |
453 | ||
454 | strcpy(a->name, "Radio"); | |
455 | a->capability = V4L2_AUDCAP_STEREO; | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
460 | { | |
461 | *i = 0; | |
462 | return 0; | |
463 | } | |
464 | ||
465 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
466 | { | |
13099294 | 467 | return i ? -EINVAL : 0; |
7002a4f3 DL |
468 | } |
469 | ||
470 | static int vidioc_s_audio(struct file *file, void *priv, | |
471 | struct v4l2_audio *a) | |
472 | { | |
13099294 | 473 | return a->index ? -EINVAL : 0; |
1da177e4 LT |
474 | } |
475 | ||
e64d07c9 HV |
476 | /* USB subsystem interface begins here */ |
477 | ||
478 | /* | |
479 | * Handle unplugging of the device. | |
480 | * We call video_unregister_device in any case. | |
481 | * The last function called in this procedure is | |
482 | * usb_dsbr100_video_device_release | |
483 | */ | |
484 | static void usb_dsbr100_disconnect(struct usb_interface *intf) | |
485 | { | |
486 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
487 | ||
13099294 | 488 | v4l2_device_get(&radio->v4l2_dev); |
e64d07c9 | 489 | mutex_lock(&radio->v4l2_lock); |
13099294 | 490 | usb_set_intfdata(intf, NULL); |
e64d07c9 HV |
491 | video_unregister_device(&radio->videodev); |
492 | v4l2_device_disconnect(&radio->v4l2_dev); | |
13099294 HV |
493 | mutex_unlock(&radio->v4l2_lock); |
494 | v4l2_device_put(&radio->v4l2_dev); | |
e64d07c9 HV |
495 | } |
496 | ||
497 | ||
04e0ffbb AK |
498 | /* Suspend device - stop device. */ |
499 | static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message) | |
500 | { | |
501 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
502 | int retval; | |
503 | ||
e64d07c9 | 504 | mutex_lock(&radio->v4l2_lock); |
f1ca0adf AK |
505 | if (radio->status == STARTED) { |
506 | retval = dsbr100_stop(radio); | |
507 | if (retval < 0) | |
508 | dev_warn(&intf->dev, "dsbr100_stop failed\n"); | |
509 | ||
510 | /* After dsbr100_stop() status set to STOPPED. | |
511 | * If we want driver to start radio on resume | |
512 | * we set status equal to STARTED. | |
513 | * On resume we will check status and run radio if needed. | |
514 | */ | |
f1ca0adf | 515 | radio->status = STARTED; |
f1ca0adf | 516 | } |
e64d07c9 | 517 | mutex_unlock(&radio->v4l2_lock); |
04e0ffbb AK |
518 | |
519 | dev_info(&intf->dev, "going into suspend..\n"); | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
524 | /* Resume device - start device. */ | |
525 | static int usb_dsbr100_resume(struct usb_interface *intf) | |
526 | { | |
527 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
528 | int retval; | |
529 | ||
e64d07c9 | 530 | mutex_lock(&radio->v4l2_lock); |
f1ca0adf AK |
531 | if (radio->status == STARTED) { |
532 | retval = dsbr100_start(radio); | |
533 | if (retval < 0) | |
534 | dev_warn(&intf->dev, "dsbr100_start failed\n"); | |
535 | } | |
e64d07c9 | 536 | mutex_unlock(&radio->v4l2_lock); |
04e0ffbb AK |
537 | |
538 | dev_info(&intf->dev, "coming out of suspend..\n"); | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
fc55bcb0 | 543 | /* free data structures */ |
13099294 | 544 | static void usb_dsbr100_release(struct v4l2_device *v4l2_dev) |
3a0efc32 | 545 | { |
13099294 | 546 | struct dsbr100_device *radio = v4l2_dev_to_radio(v4l2_dev); |
3a0efc32 | 547 | |
406827cc | 548 | v4l2_device_unregister(&radio->v4l2_dev); |
3a0efc32 AK |
549 | kfree(radio->transfer_buffer); |
550 | kfree(radio); | |
551 | } | |
552 | ||
7002a4f3 | 553 | /* File system interface */ |
bec43661 | 554 | static const struct v4l2_file_operations usb_dsbr100_fops = { |
7002a4f3 | 555 | .owner = THIS_MODULE, |
e64d07c9 | 556 | .unlocked_ioctl = video_ioctl2, |
7002a4f3 DL |
557 | }; |
558 | ||
a399810c | 559 | static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = { |
7002a4f3 DL |
560 | .vidioc_querycap = vidioc_querycap, |
561 | .vidioc_g_tuner = vidioc_g_tuner, | |
562 | .vidioc_s_tuner = vidioc_s_tuner, | |
563 | .vidioc_g_frequency = vidioc_g_frequency, | |
564 | .vidioc_s_frequency = vidioc_s_frequency, | |
565 | .vidioc_queryctrl = vidioc_queryctrl, | |
566 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
567 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
568 | .vidioc_g_audio = vidioc_g_audio, | |
569 | .vidioc_s_audio = vidioc_s_audio, | |
570 | .vidioc_g_input = vidioc_g_input, | |
571 | .vidioc_s_input = vidioc_s_input, | |
572 | }; | |
573 | ||
fc55bcb0 | 574 | /* check if the device is present and register with v4l and usb if it is */ |
7002a4f3 DL |
575 | static int usb_dsbr100_probe(struct usb_interface *intf, |
576 | const struct usb_device_id *id) | |
577 | { | |
578 | struct dsbr100_device *radio; | |
406827cc | 579 | struct v4l2_device *v4l2_dev; |
417b7953 | 580 | int retval; |
7002a4f3 | 581 | |
406827cc | 582 | radio = kzalloc(sizeof(struct dsbr100_device), GFP_KERNEL); |
223377e7 AK |
583 | |
584 | if (!radio) | |
7002a4f3 | 585 | return -ENOMEM; |
223377e7 AK |
586 | |
587 | radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); | |
588 | ||
589 | if (!(radio->transfer_buffer)) { | |
863c86dd ON |
590 | kfree(radio); |
591 | return -ENOMEM; | |
592 | } | |
223377e7 | 593 | |
406827cc | 594 | v4l2_dev = &radio->v4l2_dev; |
13099294 | 595 | v4l2_dev->release = usb_dsbr100_release; |
406827cc AK |
596 | |
597 | retval = v4l2_device_register(&intf->dev, v4l2_dev); | |
598 | if (retval < 0) { | |
599 | v4l2_err(v4l2_dev, "couldn't register v4l2_device\n"); | |
600 | kfree(radio->transfer_buffer); | |
601 | kfree(radio); | |
602 | return retval; | |
603 | } | |
604 | ||
e64d07c9 | 605 | mutex_init(&radio->v4l2_lock); |
406827cc AK |
606 | strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name)); |
607 | radio->videodev.v4l2_dev = v4l2_dev; | |
608 | radio->videodev.fops = &usb_dsbr100_fops; | |
609 | radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops; | |
13099294 | 610 | radio->videodev.release = video_device_release_empty; |
e64d07c9 | 611 | radio->videodev.lock = &radio->v4l2_lock; |
3a0efc32 | 612 | |
7002a4f3 | 613 | radio->usbdev = interface_to_usbdev(intf); |
223377e7 | 614 | radio->curfreq = FREQ_MIN * FREQ_MUL; |
f1ca0adf | 615 | radio->status = STOPPED; |
406827cc | 616 | |
3a0efc32 | 617 | video_set_drvdata(&radio->videodev, radio); |
406827cc | 618 | |
417b7953 AK |
619 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); |
620 | if (retval < 0) { | |
406827cc AK |
621 | v4l2_err(v4l2_dev, "couldn't register video device\n"); |
622 | v4l2_device_unregister(v4l2_dev); | |
863c86dd | 623 | kfree(radio->transfer_buffer); |
7002a4f3 DL |
624 | kfree(radio); |
625 | return -EIO; | |
626 | } | |
627 | usb_set_intfdata(intf, radio); | |
628 | return 0; | |
629 | } | |
630 | ||
1da177e4 LT |
631 | static int __init dsbr100_init(void) |
632 | { | |
633 | int retval = usb_register(&usb_dsbr100_driver); | |
a482f327 GKH |
634 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
635 | DRIVER_DESC "\n"); | |
1da177e4 LT |
636 | return retval; |
637 | } | |
638 | ||
639 | static void __exit dsbr100_exit(void) | |
640 | { | |
641 | usb_deregister(&usb_dsbr100_driver); | |
642 | } | |
643 | ||
644 | module_init (dsbr100_init); | |
645 | module_exit (dsbr100_exit); | |
646 | ||
647 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
648 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
649 | MODULE_LICENSE("GPL"); |