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 | ||
406827cc AK |
36 | Version 0.45: |
37 | Converted to v4l2_device. | |
38 | ||
6076dbf4 AK |
39 | Version 0.44: |
40 | Add suspend/resume functions, fix unplug of device, | |
41 | a lot of cleanups and fixes by Alexey Klimov <klimov.linux@gmail.com> | |
42 | ||
863c86dd ON |
43 | Version 0.43: |
44 | Oliver Neukum: avoided DMA coherency issue | |
45 | ||
7002a4f3 DL |
46 | Version 0.42: |
47 | Converted dsbr100 to use video_ioctl2 | |
48 | by Douglas Landgraf <dougsland@gmail.com> | |
49 | ||
5aff308c AC |
50 | Version 0.41-ac1: |
51 | Alan Cox: Some cleanups and fixes | |
52 | ||
53 | Version 0.41: | |
54 | Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> | |
55 | ||
1da177e4 | 56 | Version 0.40: |
5aff308c | 57 | Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing |
1da177e4 LT |
58 | |
59 | Version 0.30: | |
d56410e0 | 60 | Markus: Updates for 2.5.x kernel and more ISO compliant source |
1da177e4 LT |
61 | |
62 | Version 0.25: | |
d56410e0 | 63 | PSL and Markus: Cleanup, radio now doesn't stop on device close |
1da177e4 LT |
64 | |
65 | Version 0.24: | |
d56410e0 | 66 | Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally |
1da177e4 LT |
67 | right. Some minor cleanup, improved standalone compilation |
68 | ||
69 | Version 0.23: | |
d56410e0 | 70 | Markus: Sign extension bug fixed by declaring transfer_buffer unsigned |
1da177e4 LT |
71 | |
72 | Version 0.22: | |
d56410e0 | 73 | Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns, |
1da177e4 LT |
74 | thanks to Mike Cox for pointing the problem out. |
75 | ||
76 | Version 0.21: | |
d56410e0 | 77 | Markus: Minor cleanup, warnings if something goes wrong, lame attempt |
1da177e4 LT |
78 | to adhere to Documentation/CodingStyle |
79 | ||
d56410e0 MCC |
80 | Version 0.2: |
81 | Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module | |
1da177e4 LT |
82 | Markus: Copyright clarification |
83 | ||
84 | Version 0.01: Markus: initial release | |
85 | ||
86 | */ | |
87 | ||
1da177e4 LT |
88 | #include <linux/kernel.h> |
89 | #include <linux/module.h> | |
90 | #include <linux/init.h> | |
91 | #include <linux/slab.h> | |
92 | #include <linux/input.h> | |
5aff308c | 93 | #include <linux/videodev2.h> |
406827cc | 94 | #include <media/v4l2-device.h> |
35ea11ff | 95 | #include <media/v4l2-ioctl.h> |
1da177e4 | 96 | #include <linux/usb.h> |
1da177e4 LT |
97 | |
98 | /* | |
99 | * Version Information | |
100 | */ | |
5aff308c AC |
101 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
102 | ||
406827cc AK |
103 | #define DRIVER_VERSION "v0.45" |
104 | #define RADIO_VERSION KERNEL_VERSION(0, 4, 5) | |
5aff308c | 105 | |
1da177e4 LT |
106 | #define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>" |
107 | #define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver" | |
108 | ||
109 | #define DSB100_VENDOR 0x04b4 | |
110 | #define DSB100_PRODUCT 0x1002 | |
111 | ||
112 | /* Commands the device appears to understand */ | |
113 | #define DSB100_TUNE 1 | |
114 | #define DSB100_ONOFF 2 | |
115 | ||
116 | #define TB_LEN 16 | |
117 | ||
118 | /* Frequency limits in MHz -- these are European values. For Japanese | |
119 | devices, that would be 76 and 91. */ | |
120 | #define FREQ_MIN 87.5 | |
121 | #define FREQ_MAX 108.0 | |
122 | #define FREQ_MUL 16000 | |
123 | ||
3a0efc32 | 124 | #define videodev_to_radio(d) container_of(d, struct dsbr100_device, videodev) |
1da177e4 LT |
125 | |
126 | static int usb_dsbr100_probe(struct usb_interface *intf, | |
127 | const struct usb_device_id *id); | |
128 | static void usb_dsbr100_disconnect(struct usb_interface *intf); | |
04e0ffbb AK |
129 | static int usb_dsbr100_suspend(struct usb_interface *intf, |
130 | pm_message_t message); | |
131 | static int usb_dsbr100_resume(struct usb_interface *intf); | |
1da177e4 LT |
132 | |
133 | static int radio_nr = -1; | |
134 | module_param(radio_nr, int, 0); | |
135 | ||
136 | /* Data for one (physical) device */ | |
5aff308c | 137 | struct dsbr100_device { |
1da177e4 | 138 | struct usb_device *usbdev; |
3a0efc32 | 139 | struct video_device videodev; |
406827cc AK |
140 | struct v4l2_device v4l2_dev; |
141 | ||
863c86dd | 142 | u8 *transfer_buffer; |
3a0efc32 | 143 | struct mutex lock; /* buffer locking */ |
1da177e4 LT |
144 | int curfreq; |
145 | int stereo; | |
1da177e4 | 146 | int removed; |
5aff308c AC |
147 | int muted; |
148 | }; | |
1da177e4 | 149 | |
1da177e4 LT |
150 | static struct usb_device_id usb_dsbr100_device_table [] = { |
151 | { USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) }, | |
152 | { } /* Terminating entry */ | |
153 | }; | |
154 | ||
155 | MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table); | |
156 | ||
157 | /* USB subsystem interface */ | |
158 | static struct usb_driver usb_dsbr100_driver = { | |
04e0ffbb AK |
159 | .name = "dsbr100", |
160 | .probe = usb_dsbr100_probe, | |
161 | .disconnect = usb_dsbr100_disconnect, | |
162 | .id_table = usb_dsbr100_device_table, | |
163 | .suspend = usb_dsbr100_suspend, | |
164 | .resume = usb_dsbr100_resume, | |
165 | .reset_resume = usb_dsbr100_resume, | |
166 | .supports_autosuspend = 0, | |
1da177e4 LT |
167 | }; |
168 | ||
169 | /* Low-level device interface begins here */ | |
170 | ||
171 | /* switch on radio */ | |
5aff308c | 172 | static int dsbr100_start(struct dsbr100_device *radio) |
1da177e4 | 173 | { |
417b7953 AK |
174 | int retval; |
175 | int request; | |
176 | ||
3a0efc32 | 177 | mutex_lock(&radio->lock); |
417b7953 AK |
178 | |
179 | retval = usb_control_msg(radio->usbdev, | |
180 | usb_rcvctrlpipe(radio->usbdev, 0), | |
181 | USB_REQ_GET_STATUS, | |
182 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
183 | 0x00, 0xC7, radio->transfer_buffer, 8, 300); | |
184 | ||
185 | if (retval < 0) { | |
186 | request = USB_REQ_GET_STATUS; | |
187 | goto usb_control_msg_failed; | |
3a0efc32 AK |
188 | } |
189 | ||
417b7953 AK |
190 | retval = usb_control_msg(radio->usbdev, |
191 | usb_rcvctrlpipe(radio->usbdev, 0), | |
192 | DSB100_ONOFF, | |
193 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
194 | 0x01, 0x00, radio->transfer_buffer, 8, 300); | |
195 | ||
196 | if (retval < 0) { | |
197 | request = DSB100_ONOFF; | |
198 | goto usb_control_msg_failed; | |
199 | } | |
200 | ||
201 | radio->muted = 0; | |
3a0efc32 | 202 | mutex_unlock(&radio->lock); |
1da177e4 | 203 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
204 | |
205 | usb_control_msg_failed: | |
206 | mutex_unlock(&radio->lock); | |
207 | dev_err(&radio->usbdev->dev, | |
208 | "%s - usb_control_msg returned %i, request %i\n", | |
209 | __func__, retval, request); | |
d25cb646 | 210 | return retval; |
417b7953 | 211 | |
1da177e4 LT |
212 | } |
213 | ||
1da177e4 | 214 | /* switch off radio */ |
5aff308c | 215 | static int dsbr100_stop(struct dsbr100_device *radio) |
1da177e4 | 216 | { |
417b7953 AK |
217 | int retval; |
218 | int request; | |
219 | ||
3a0efc32 | 220 | mutex_lock(&radio->lock); |
417b7953 AK |
221 | |
222 | retval = usb_control_msg(radio->usbdev, | |
223 | usb_rcvctrlpipe(radio->usbdev, 0), | |
224 | USB_REQ_GET_STATUS, | |
225 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
226 | 0x16, 0x1C, radio->transfer_buffer, 8, 300); | |
227 | ||
228 | if (retval < 0) { | |
229 | request = USB_REQ_GET_STATUS; | |
230 | goto usb_control_msg_failed; | |
231 | } | |
232 | ||
233 | retval = usb_control_msg(radio->usbdev, | |
234 | usb_rcvctrlpipe(radio->usbdev, 0), | |
235 | DSB100_ONOFF, | |
236 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
237 | 0x00, 0x00, radio->transfer_buffer, 8, 300); | |
238 | ||
239 | if (retval < 0) { | |
240 | request = DSB100_ONOFF; | |
241 | goto usb_control_msg_failed; | |
3a0efc32 AK |
242 | } |
243 | ||
417b7953 | 244 | radio->muted = 1; |
3a0efc32 | 245 | mutex_unlock(&radio->lock); |
1da177e4 | 246 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
247 | |
248 | usb_control_msg_failed: | |
249 | mutex_unlock(&radio->lock); | |
250 | dev_err(&radio->usbdev->dev, | |
251 | "%s - usb_control_msg returned %i, request %i\n", | |
252 | __func__, retval, request); | |
d25cb646 | 253 | return retval; |
417b7953 | 254 | |
1da177e4 LT |
255 | } |
256 | ||
257 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
5aff308c | 258 | static int dsbr100_setfreq(struct dsbr100_device *radio, int freq) |
1da177e4 | 259 | { |
417b7953 AK |
260 | int retval; |
261 | int request; | |
262 | ||
223377e7 | 263 | freq = (freq / 16 * 80) / 1000 + 856; |
3a0efc32 | 264 | mutex_lock(&radio->lock); |
417b7953 AK |
265 | |
266 | retval = usb_control_msg(radio->usbdev, | |
267 | usb_rcvctrlpipe(radio->usbdev, 0), | |
268 | DSB100_TUNE, | |
269 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
270 | (freq >> 8) & 0x00ff, freq & 0xff, | |
271 | radio->transfer_buffer, 8, 300); | |
272 | ||
273 | if (retval < 0) { | |
274 | request = DSB100_TUNE; | |
275 | goto usb_control_msg_failed; | |
276 | } | |
277 | ||
278 | retval = usb_control_msg(radio->usbdev, | |
279 | usb_rcvctrlpipe(radio->usbdev, 0), | |
280 | USB_REQ_GET_STATUS, | |
281 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
282 | 0x96, 0xB7, radio->transfer_buffer, 8, 300); | |
283 | ||
284 | if (retval < 0) { | |
285 | request = USB_REQ_GET_STATUS; | |
286 | goto usb_control_msg_failed; | |
287 | } | |
288 | ||
289 | retval = usb_control_msg(radio->usbdev, | |
290 | usb_rcvctrlpipe(radio->usbdev, 0), | |
291 | USB_REQ_GET_STATUS, | |
292 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
293 | 0x00, 0x24, radio->transfer_buffer, 8, 300); | |
294 | ||
295 | if (retval < 0) { | |
296 | request = USB_REQ_GET_STATUS; | |
297 | goto usb_control_msg_failed; | |
1da177e4 | 298 | } |
3a0efc32 | 299 | |
223377e7 | 300 | radio->stereo = !((radio->transfer_buffer)[0] & 0x01); |
3a0efc32 | 301 | mutex_unlock(&radio->lock); |
1da177e4 | 302 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
303 | |
304 | usb_control_msg_failed: | |
305 | radio->stereo = -1; | |
306 | mutex_unlock(&radio->lock); | |
307 | dev_err(&radio->usbdev->dev, | |
308 | "%s - usb_control_msg returned %i, request %i\n", | |
309 | __func__, retval, request); | |
d25cb646 | 310 | return retval; |
1da177e4 LT |
311 | } |
312 | ||
313 | /* return the device status. This is, in effect, just whether it | |
314 | sees a stereo signal or not. Pity. */ | |
5aff308c | 315 | static void dsbr100_getstat(struct dsbr100_device *radio) |
1da177e4 | 316 | { |
417b7953 AK |
317 | int retval; |
318 | ||
3a0efc32 | 319 | mutex_lock(&radio->lock); |
417b7953 AK |
320 | |
321 | retval = usb_control_msg(radio->usbdev, | |
322 | usb_rcvctrlpipe(radio->usbdev, 0), | |
d56410e0 | 323 | USB_REQ_GET_STATUS, |
1da177e4 | 324 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
417b7953 AK |
325 | 0x00 , 0x24, radio->transfer_buffer, 8, 300); |
326 | ||
327 | if (retval < 0) { | |
1da177e4 | 328 | radio->stereo = -1; |
417b7953 AK |
329 | dev_err(&radio->usbdev->dev, |
330 | "%s - usb_control_msg returned %i, request %i\n", | |
331 | __func__, retval, USB_REQ_GET_STATUS); | |
332 | } else { | |
223377e7 | 333 | radio->stereo = !(radio->transfer_buffer[0] & 0x01); |
417b7953 AK |
334 | } |
335 | ||
3a0efc32 | 336 | mutex_unlock(&radio->lock); |
1da177e4 LT |
337 | } |
338 | ||
1da177e4 LT |
339 | /* USB subsystem interface begins here */ |
340 | ||
fc55bcb0 AK |
341 | /* |
342 | * Handle unplugging of the device. | |
343 | * We call video_unregister_device in any case. | |
344 | * The last function called in this procedure is | |
345 | * usb_dsbr100_video_device_release | |
346 | */ | |
1da177e4 LT |
347 | static void usb_dsbr100_disconnect(struct usb_interface *intf) |
348 | { | |
5aff308c | 349 | struct dsbr100_device *radio = usb_get_intfdata(intf); |
1da177e4 LT |
350 | |
351 | usb_set_intfdata (intf, NULL); | |
3a0efc32 AK |
352 | |
353 | mutex_lock(&radio->lock); | |
354 | radio->removed = 1; | |
355 | mutex_unlock(&radio->lock); | |
356 | ||
357 | video_unregister_device(&radio->videodev); | |
406827cc | 358 | v4l2_device_disconnect(&radio->v4l2_dev); |
1da177e4 LT |
359 | } |
360 | ||
361 | ||
7002a4f3 DL |
362 | static int vidioc_querycap(struct file *file, void *priv, |
363 | struct v4l2_capability *v) | |
364 | { | |
c7181cfa AK |
365 | struct dsbr100_device *radio = video_drvdata(file); |
366 | ||
7002a4f3 DL |
367 | strlcpy(v->driver, "dsbr100", sizeof(v->driver)); |
368 | strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 369 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
7002a4f3 DL |
370 | v->version = RADIO_VERSION; |
371 | v->capabilities = V4L2_CAP_TUNER; | |
372 | return 0; | |
373 | } | |
1da177e4 | 374 | |
7002a4f3 DL |
375 | static int vidioc_g_tuner(struct file *file, void *priv, |
376 | struct v4l2_tuner *v) | |
1da177e4 | 377 | { |
c170ecf4 | 378 | struct dsbr100_device *radio = video_drvdata(file); |
7002a4f3 | 379 | |
3a0efc32 AK |
380 | /* safety check */ |
381 | if (radio->removed) | |
382 | return -EIO; | |
383 | ||
7002a4f3 DL |
384 | if (v->index > 0) |
385 | return -EINVAL; | |
386 | ||
387 | dsbr100_getstat(radio); | |
388 | strcpy(v->name, "FM"); | |
389 | v->type = V4L2_TUNER_RADIO; | |
223377e7 AK |
390 | v->rangelow = FREQ_MIN * FREQ_MUL; |
391 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
392 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
7002a4f3 DL |
393 | v->capability = V4L2_TUNER_CAP_LOW; |
394 | if(radio->stereo) | |
395 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
396 | else | |
397 | v->audmode = V4L2_TUNER_MODE_MONO; | |
398 | v->signal = 0xffff; /* We can't get the signal strength */ | |
399 | return 0; | |
400 | } | |
1da177e4 | 401 | |
7002a4f3 DL |
402 | static int vidioc_s_tuner(struct file *file, void *priv, |
403 | struct v4l2_tuner *v) | |
404 | { | |
3a0efc32 AK |
405 | struct dsbr100_device *radio = video_drvdata(file); |
406 | ||
407 | /* safety check */ | |
408 | if (radio->removed) | |
409 | return -EIO; | |
410 | ||
7002a4f3 DL |
411 | if (v->index > 0) |
412 | return -EINVAL; | |
1da177e4 | 413 | |
7002a4f3 DL |
414 | return 0; |
415 | } | |
5aff308c | 416 | |
7002a4f3 DL |
417 | static int vidioc_s_frequency(struct file *file, void *priv, |
418 | struct v4l2_frequency *f) | |
419 | { | |
c170ecf4 | 420 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 421 | int retval; |
1da177e4 | 422 | |
3a0efc32 AK |
423 | /* safety check */ |
424 | if (radio->removed) | |
425 | return -EIO; | |
426 | ||
fdf9c997 | 427 | mutex_lock(&radio->lock); |
7002a4f3 | 428 | radio->curfreq = f->frequency; |
fdf9c997 AK |
429 | mutex_unlock(&radio->lock); |
430 | ||
417b7953 | 431 | retval = dsbr100_setfreq(radio, radio->curfreq); |
d25cb646 | 432 | if (retval < 0) |
aa82661b | 433 | dev_warn(&radio->usbdev->dev, "Set frequency failed\n"); |
7002a4f3 DL |
434 | return 0; |
435 | } | |
5aff308c | 436 | |
7002a4f3 DL |
437 | static int vidioc_g_frequency(struct file *file, void *priv, |
438 | struct v4l2_frequency *f) | |
439 | { | |
c170ecf4 | 440 | struct dsbr100_device *radio = video_drvdata(file); |
5aff308c | 441 | |
3a0efc32 AK |
442 | /* safety check */ |
443 | if (radio->removed) | |
444 | return -EIO; | |
445 | ||
7002a4f3 DL |
446 | f->type = V4L2_TUNER_RADIO; |
447 | f->frequency = radio->curfreq; | |
448 | return 0; | |
449 | } | |
5aff308c | 450 | |
7002a4f3 DL |
451 | static int vidioc_queryctrl(struct file *file, void *priv, |
452 | struct v4l2_queryctrl *qc) | |
453 | { | |
406827cc AK |
454 | switch (qc->id) { |
455 | case V4L2_CID_AUDIO_MUTE: | |
456 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
7002a4f3 | 457 | } |
406827cc | 458 | |
7002a4f3 DL |
459 | return -EINVAL; |
460 | } | |
5aff308c | 461 | |
7002a4f3 DL |
462 | static int vidioc_g_ctrl(struct file *file, void *priv, |
463 | struct v4l2_control *ctrl) | |
464 | { | |
c170ecf4 | 465 | struct dsbr100_device *radio = video_drvdata(file); |
1da177e4 | 466 | |
3a0efc32 AK |
467 | /* safety check */ |
468 | if (radio->removed) | |
469 | return -EIO; | |
470 | ||
7002a4f3 DL |
471 | switch (ctrl->id) { |
472 | case V4L2_CID_AUDIO_MUTE: | |
473 | ctrl->value = radio->muted; | |
474 | return 0; | |
475 | } | |
476 | return -EINVAL; | |
477 | } | |
5aff308c | 478 | |
7002a4f3 DL |
479 | static int vidioc_s_ctrl(struct file *file, void *priv, |
480 | struct v4l2_control *ctrl) | |
481 | { | |
c170ecf4 | 482 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 483 | int retval; |
5aff308c | 484 | |
3a0efc32 AK |
485 | /* safety check */ |
486 | if (radio->removed) | |
487 | return -EIO; | |
488 | ||
7002a4f3 DL |
489 | switch (ctrl->id) { |
490 | case V4L2_CID_AUDIO_MUTE: | |
491 | if (ctrl->value) { | |
417b7953 | 492 | retval = dsbr100_stop(radio); |
d25cb646 | 493 | if (retval < 0) { |
aa82661b GKH |
494 | dev_warn(&radio->usbdev->dev, |
495 | "Radio did not respond properly\n"); | |
90b698dd AK |
496 | return -EBUSY; |
497 | } | |
7002a4f3 | 498 | } else { |
417b7953 | 499 | retval = dsbr100_start(radio); |
d25cb646 | 500 | if (retval < 0) { |
aa82661b GKH |
501 | dev_warn(&radio->usbdev->dev, |
502 | "Radio did not respond properly\n"); | |
90b698dd AK |
503 | return -EBUSY; |
504 | } | |
1da177e4 | 505 | } |
7002a4f3 | 506 | return 0; |
1da177e4 | 507 | } |
7002a4f3 | 508 | return -EINVAL; |
1da177e4 LT |
509 | } |
510 | ||
7002a4f3 DL |
511 | static int vidioc_g_audio(struct file *file, void *priv, |
512 | struct v4l2_audio *a) | |
1da177e4 | 513 | { |
7002a4f3 DL |
514 | if (a->index > 1) |
515 | return -EINVAL; | |
516 | ||
517 | strcpy(a->name, "Radio"); | |
518 | a->capability = V4L2_AUDCAP_STEREO; | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
523 | { | |
524 | *i = 0; | |
525 | return 0; | |
526 | } | |
527 | ||
528 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
529 | { | |
530 | if (i != 0) | |
531 | return -EINVAL; | |
532 | return 0; | |
533 | } | |
534 | ||
535 | static int vidioc_s_audio(struct file *file, void *priv, | |
536 | struct v4l2_audio *a) | |
537 | { | |
538 | if (a->index != 0) | |
539 | return -EINVAL; | |
540 | return 0; | |
1da177e4 LT |
541 | } |
542 | ||
04e0ffbb AK |
543 | /* Suspend device - stop device. */ |
544 | static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message) | |
545 | { | |
546 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
547 | int retval; | |
548 | ||
549 | retval = dsbr100_stop(radio); | |
d25cb646 | 550 | if (retval < 0) |
04e0ffbb AK |
551 | dev_warn(&intf->dev, "dsbr100_stop failed\n"); |
552 | ||
553 | dev_info(&intf->dev, "going into suspend..\n"); | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | /* Resume device - start device. */ | |
559 | static int usb_dsbr100_resume(struct usb_interface *intf) | |
560 | { | |
561 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
562 | int retval; | |
563 | ||
564 | retval = dsbr100_start(radio); | |
d25cb646 | 565 | if (retval < 0) |
04e0ffbb AK |
566 | dev_warn(&intf->dev, "dsbr100_start failed\n"); |
567 | ||
568 | dev_info(&intf->dev, "coming out of suspend..\n"); | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
fc55bcb0 | 573 | /* free data structures */ |
3a0efc32 AK |
574 | static void usb_dsbr100_video_device_release(struct video_device *videodev) |
575 | { | |
576 | struct dsbr100_device *radio = videodev_to_radio(videodev); | |
577 | ||
406827cc | 578 | v4l2_device_unregister(&radio->v4l2_dev); |
3a0efc32 AK |
579 | kfree(radio->transfer_buffer); |
580 | kfree(radio); | |
581 | } | |
582 | ||
7002a4f3 | 583 | /* File system interface */ |
bec43661 | 584 | static const struct v4l2_file_operations usb_dsbr100_fops = { |
7002a4f3 | 585 | .owner = THIS_MODULE, |
7002a4f3 | 586 | .ioctl = video_ioctl2, |
7002a4f3 DL |
587 | }; |
588 | ||
a399810c | 589 | static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = { |
7002a4f3 DL |
590 | .vidioc_querycap = vidioc_querycap, |
591 | .vidioc_g_tuner = vidioc_g_tuner, | |
592 | .vidioc_s_tuner = vidioc_s_tuner, | |
593 | .vidioc_g_frequency = vidioc_g_frequency, | |
594 | .vidioc_s_frequency = vidioc_s_frequency, | |
595 | .vidioc_queryctrl = vidioc_queryctrl, | |
596 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
597 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
598 | .vidioc_g_audio = vidioc_g_audio, | |
599 | .vidioc_s_audio = vidioc_s_audio, | |
600 | .vidioc_g_input = vidioc_g_input, | |
601 | .vidioc_s_input = vidioc_s_input, | |
602 | }; | |
603 | ||
fc55bcb0 | 604 | /* check if the device is present and register with v4l and usb if it is */ |
7002a4f3 DL |
605 | static int usb_dsbr100_probe(struct usb_interface *intf, |
606 | const struct usb_device_id *id) | |
607 | { | |
608 | struct dsbr100_device *radio; | |
406827cc | 609 | struct v4l2_device *v4l2_dev; |
417b7953 | 610 | int retval; |
7002a4f3 | 611 | |
406827cc | 612 | radio = kzalloc(sizeof(struct dsbr100_device), GFP_KERNEL); |
223377e7 AK |
613 | |
614 | if (!radio) | |
7002a4f3 | 615 | return -ENOMEM; |
223377e7 AK |
616 | |
617 | radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); | |
618 | ||
619 | if (!(radio->transfer_buffer)) { | |
863c86dd ON |
620 | kfree(radio); |
621 | return -ENOMEM; | |
622 | } | |
223377e7 | 623 | |
406827cc AK |
624 | v4l2_dev = &radio->v4l2_dev; |
625 | ||
626 | retval = v4l2_device_register(&intf->dev, v4l2_dev); | |
627 | if (retval < 0) { | |
628 | v4l2_err(v4l2_dev, "couldn't register v4l2_device\n"); | |
629 | kfree(radio->transfer_buffer); | |
630 | kfree(radio); | |
631 | return retval; | |
632 | } | |
633 | ||
634 | strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name)); | |
635 | radio->videodev.v4l2_dev = v4l2_dev; | |
636 | radio->videodev.fops = &usb_dsbr100_fops; | |
637 | radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops; | |
638 | radio->videodev.release = usb_dsbr100_video_device_release; | |
639 | ||
3a0efc32 | 640 | mutex_init(&radio->lock); |
3a0efc32 | 641 | |
7002a4f3 | 642 | radio->removed = 0; |
7002a4f3 | 643 | radio->usbdev = interface_to_usbdev(intf); |
223377e7 | 644 | radio->curfreq = FREQ_MIN * FREQ_MUL; |
406827cc | 645 | |
3a0efc32 | 646 | video_set_drvdata(&radio->videodev, radio); |
406827cc | 647 | |
417b7953 AK |
648 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); |
649 | if (retval < 0) { | |
406827cc AK |
650 | v4l2_err(v4l2_dev, "couldn't register video device\n"); |
651 | v4l2_device_unregister(v4l2_dev); | |
863c86dd | 652 | kfree(radio->transfer_buffer); |
7002a4f3 DL |
653 | kfree(radio); |
654 | return -EIO; | |
655 | } | |
656 | usb_set_intfdata(intf, radio); | |
657 | return 0; | |
658 | } | |
659 | ||
1da177e4 LT |
660 | static int __init dsbr100_init(void) |
661 | { | |
662 | int retval = usb_register(&usb_dsbr100_driver); | |
a482f327 GKH |
663 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
664 | DRIVER_DESC "\n"); | |
1da177e4 LT |
665 | return retval; |
666 | } | |
667 | ||
668 | static void __exit dsbr100_exit(void) | |
669 | { | |
670 | usb_deregister(&usb_dsbr100_driver); | |
671 | } | |
672 | ||
673 | module_init (dsbr100_init); | |
674 | module_exit (dsbr100_exit); | |
675 | ||
676 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
677 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
678 | MODULE_LICENSE("GPL"); |