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