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); | |
bec43661 HV |
129 | static int usb_dsbr100_open(struct file *file); |
130 | static int usb_dsbr100_close(struct file *file); | |
04e0ffbb AK |
131 | static int usb_dsbr100_suspend(struct usb_interface *intf, |
132 | pm_message_t message); | |
133 | static int usb_dsbr100_resume(struct usb_interface *intf); | |
1da177e4 LT |
134 | |
135 | static int radio_nr = -1; | |
136 | module_param(radio_nr, int, 0); | |
137 | ||
138 | /* Data for one (physical) device */ | |
5aff308c | 139 | struct dsbr100_device { |
1da177e4 | 140 | struct usb_device *usbdev; |
3a0efc32 | 141 | struct video_device videodev; |
406827cc AK |
142 | struct v4l2_device v4l2_dev; |
143 | ||
863c86dd | 144 | u8 *transfer_buffer; |
3a0efc32 | 145 | struct mutex lock; /* buffer locking */ |
1da177e4 LT |
146 | int curfreq; |
147 | int stereo; | |
148 | int users; | |
149 | int removed; | |
5aff308c AC |
150 | int muted; |
151 | }; | |
1da177e4 | 152 | |
1da177e4 LT |
153 | static struct usb_device_id usb_dsbr100_device_table [] = { |
154 | { USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) }, | |
155 | { } /* Terminating entry */ | |
156 | }; | |
157 | ||
158 | MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table); | |
159 | ||
160 | /* USB subsystem interface */ | |
161 | static struct usb_driver usb_dsbr100_driver = { | |
04e0ffbb AK |
162 | .name = "dsbr100", |
163 | .probe = usb_dsbr100_probe, | |
164 | .disconnect = usb_dsbr100_disconnect, | |
165 | .id_table = usb_dsbr100_device_table, | |
166 | .suspend = usb_dsbr100_suspend, | |
167 | .resume = usb_dsbr100_resume, | |
168 | .reset_resume = usb_dsbr100_resume, | |
169 | .supports_autosuspend = 0, | |
1da177e4 LT |
170 | }; |
171 | ||
172 | /* Low-level device interface begins here */ | |
173 | ||
174 | /* switch on radio */ | |
5aff308c | 175 | static int dsbr100_start(struct dsbr100_device *radio) |
1da177e4 | 176 | { |
417b7953 AK |
177 | int retval; |
178 | int request; | |
179 | ||
3a0efc32 | 180 | mutex_lock(&radio->lock); |
417b7953 AK |
181 | |
182 | retval = usb_control_msg(radio->usbdev, | |
183 | usb_rcvctrlpipe(radio->usbdev, 0), | |
184 | USB_REQ_GET_STATUS, | |
185 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
186 | 0x00, 0xC7, radio->transfer_buffer, 8, 300); | |
187 | ||
188 | if (retval < 0) { | |
189 | request = USB_REQ_GET_STATUS; | |
190 | goto usb_control_msg_failed; | |
3a0efc32 AK |
191 | } |
192 | ||
417b7953 AK |
193 | retval = usb_control_msg(radio->usbdev, |
194 | usb_rcvctrlpipe(radio->usbdev, 0), | |
195 | DSB100_ONOFF, | |
196 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
197 | 0x01, 0x00, radio->transfer_buffer, 8, 300); | |
198 | ||
199 | if (retval < 0) { | |
200 | request = DSB100_ONOFF; | |
201 | goto usb_control_msg_failed; | |
202 | } | |
203 | ||
204 | radio->muted = 0; | |
3a0efc32 | 205 | mutex_unlock(&radio->lock); |
1da177e4 | 206 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
207 | |
208 | usb_control_msg_failed: | |
209 | mutex_unlock(&radio->lock); | |
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 | ||
3a0efc32 | 223 | mutex_lock(&radio->lock); |
417b7953 AK |
224 | |
225 | retval = usb_control_msg(radio->usbdev, | |
226 | usb_rcvctrlpipe(radio->usbdev, 0), | |
227 | USB_REQ_GET_STATUS, | |
228 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
229 | 0x16, 0x1C, radio->transfer_buffer, 8, 300); | |
230 | ||
231 | if (retval < 0) { | |
232 | request = USB_REQ_GET_STATUS; | |
233 | goto usb_control_msg_failed; | |
234 | } | |
235 | ||
236 | retval = usb_control_msg(radio->usbdev, | |
237 | usb_rcvctrlpipe(radio->usbdev, 0), | |
238 | DSB100_ONOFF, | |
239 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
240 | 0x00, 0x00, radio->transfer_buffer, 8, 300); | |
241 | ||
242 | if (retval < 0) { | |
243 | request = DSB100_ONOFF; | |
244 | goto usb_control_msg_failed; | |
3a0efc32 AK |
245 | } |
246 | ||
417b7953 | 247 | radio->muted = 1; |
3a0efc32 | 248 | mutex_unlock(&radio->lock); |
1da177e4 | 249 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
250 | |
251 | usb_control_msg_failed: | |
252 | mutex_unlock(&radio->lock); | |
253 | dev_err(&radio->usbdev->dev, | |
254 | "%s - usb_control_msg returned %i, request %i\n", | |
255 | __func__, retval, request); | |
d25cb646 | 256 | return retval; |
417b7953 | 257 | |
1da177e4 LT |
258 | } |
259 | ||
260 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
5aff308c | 261 | static int dsbr100_setfreq(struct dsbr100_device *radio, int freq) |
1da177e4 | 262 | { |
417b7953 AK |
263 | int retval; |
264 | int request; | |
265 | ||
223377e7 | 266 | freq = (freq / 16 * 80) / 1000 + 856; |
3a0efc32 | 267 | mutex_lock(&radio->lock); |
417b7953 AK |
268 | |
269 | retval = usb_control_msg(radio->usbdev, | |
270 | usb_rcvctrlpipe(radio->usbdev, 0), | |
271 | DSB100_TUNE, | |
272 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
273 | (freq >> 8) & 0x00ff, freq & 0xff, | |
274 | radio->transfer_buffer, 8, 300); | |
275 | ||
276 | if (retval < 0) { | |
277 | request = DSB100_TUNE; | |
278 | goto usb_control_msg_failed; | |
279 | } | |
280 | ||
281 | retval = usb_control_msg(radio->usbdev, | |
282 | usb_rcvctrlpipe(radio->usbdev, 0), | |
283 | USB_REQ_GET_STATUS, | |
284 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
285 | 0x96, 0xB7, radio->transfer_buffer, 8, 300); | |
286 | ||
287 | if (retval < 0) { | |
288 | request = USB_REQ_GET_STATUS; | |
289 | goto usb_control_msg_failed; | |
290 | } | |
291 | ||
292 | retval = usb_control_msg(radio->usbdev, | |
293 | usb_rcvctrlpipe(radio->usbdev, 0), | |
294 | USB_REQ_GET_STATUS, | |
295 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
296 | 0x00, 0x24, radio->transfer_buffer, 8, 300); | |
297 | ||
298 | if (retval < 0) { | |
299 | request = USB_REQ_GET_STATUS; | |
300 | goto usb_control_msg_failed; | |
1da177e4 | 301 | } |
3a0efc32 | 302 | |
223377e7 | 303 | radio->stereo = !((radio->transfer_buffer)[0] & 0x01); |
3a0efc32 | 304 | mutex_unlock(&radio->lock); |
1da177e4 | 305 | return (radio->transfer_buffer)[0]; |
417b7953 AK |
306 | |
307 | usb_control_msg_failed: | |
308 | radio->stereo = -1; | |
309 | mutex_unlock(&radio->lock); | |
310 | dev_err(&radio->usbdev->dev, | |
311 | "%s - usb_control_msg returned %i, request %i\n", | |
312 | __func__, retval, request); | |
d25cb646 | 313 | return retval; |
1da177e4 LT |
314 | } |
315 | ||
316 | /* return the device status. This is, in effect, just whether it | |
317 | sees a stereo signal or not. Pity. */ | |
5aff308c | 318 | static void dsbr100_getstat(struct dsbr100_device *radio) |
1da177e4 | 319 | { |
417b7953 AK |
320 | int retval; |
321 | ||
3a0efc32 | 322 | mutex_lock(&radio->lock); |
417b7953 AK |
323 | |
324 | retval = usb_control_msg(radio->usbdev, | |
325 | usb_rcvctrlpipe(radio->usbdev, 0), | |
d56410e0 | 326 | USB_REQ_GET_STATUS, |
1da177e4 | 327 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
417b7953 AK |
328 | 0x00 , 0x24, radio->transfer_buffer, 8, 300); |
329 | ||
330 | if (retval < 0) { | |
1da177e4 | 331 | radio->stereo = -1; |
417b7953 AK |
332 | dev_err(&radio->usbdev->dev, |
333 | "%s - usb_control_msg returned %i, request %i\n", | |
334 | __func__, retval, USB_REQ_GET_STATUS); | |
335 | } else { | |
223377e7 | 336 | radio->stereo = !(radio->transfer_buffer[0] & 0x01); |
417b7953 AK |
337 | } |
338 | ||
3a0efc32 | 339 | mutex_unlock(&radio->lock); |
1da177e4 LT |
340 | } |
341 | ||
1da177e4 LT |
342 | /* USB subsystem interface begins here */ |
343 | ||
fc55bcb0 AK |
344 | /* |
345 | * Handle unplugging of the device. | |
346 | * We call video_unregister_device in any case. | |
347 | * The last function called in this procedure is | |
348 | * usb_dsbr100_video_device_release | |
349 | */ | |
1da177e4 LT |
350 | static void usb_dsbr100_disconnect(struct usb_interface *intf) |
351 | { | |
5aff308c | 352 | struct dsbr100_device *radio = usb_get_intfdata(intf); |
1da177e4 LT |
353 | |
354 | usb_set_intfdata (intf, NULL); | |
3a0efc32 AK |
355 | |
356 | mutex_lock(&radio->lock); | |
357 | radio->removed = 1; | |
358 | mutex_unlock(&radio->lock); | |
359 | ||
360 | video_unregister_device(&radio->videodev); | |
406827cc | 361 | v4l2_device_disconnect(&radio->v4l2_dev); |
1da177e4 LT |
362 | } |
363 | ||
364 | ||
7002a4f3 DL |
365 | static int vidioc_querycap(struct file *file, void *priv, |
366 | struct v4l2_capability *v) | |
367 | { | |
c7181cfa AK |
368 | struct dsbr100_device *radio = video_drvdata(file); |
369 | ||
7002a4f3 DL |
370 | strlcpy(v->driver, "dsbr100", sizeof(v->driver)); |
371 | strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 372 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
7002a4f3 DL |
373 | v->version = RADIO_VERSION; |
374 | v->capabilities = V4L2_CAP_TUNER; | |
375 | return 0; | |
376 | } | |
1da177e4 | 377 | |
7002a4f3 DL |
378 | static int vidioc_g_tuner(struct file *file, void *priv, |
379 | struct v4l2_tuner *v) | |
1da177e4 | 380 | { |
c170ecf4 | 381 | struct dsbr100_device *radio = video_drvdata(file); |
7002a4f3 | 382 | |
3a0efc32 AK |
383 | /* safety check */ |
384 | if (radio->removed) | |
385 | return -EIO; | |
386 | ||
7002a4f3 DL |
387 | if (v->index > 0) |
388 | return -EINVAL; | |
389 | ||
390 | dsbr100_getstat(radio); | |
391 | strcpy(v->name, "FM"); | |
392 | v->type = V4L2_TUNER_RADIO; | |
223377e7 AK |
393 | v->rangelow = FREQ_MIN * FREQ_MUL; |
394 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
395 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
7002a4f3 DL |
396 | v->capability = V4L2_TUNER_CAP_LOW; |
397 | if(radio->stereo) | |
398 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
399 | else | |
400 | v->audmode = V4L2_TUNER_MODE_MONO; | |
401 | v->signal = 0xffff; /* We can't get the signal strength */ | |
402 | return 0; | |
403 | } | |
1da177e4 | 404 | |
7002a4f3 DL |
405 | static int vidioc_s_tuner(struct file *file, void *priv, |
406 | struct v4l2_tuner *v) | |
407 | { | |
3a0efc32 AK |
408 | struct dsbr100_device *radio = video_drvdata(file); |
409 | ||
410 | /* safety check */ | |
411 | if (radio->removed) | |
412 | return -EIO; | |
413 | ||
7002a4f3 DL |
414 | if (v->index > 0) |
415 | return -EINVAL; | |
1da177e4 | 416 | |
7002a4f3 DL |
417 | return 0; |
418 | } | |
5aff308c | 419 | |
7002a4f3 DL |
420 | static int vidioc_s_frequency(struct file *file, void *priv, |
421 | struct v4l2_frequency *f) | |
422 | { | |
c170ecf4 | 423 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 424 | int retval; |
1da177e4 | 425 | |
3a0efc32 AK |
426 | /* safety check */ |
427 | if (radio->removed) | |
428 | return -EIO; | |
429 | ||
fdf9c997 | 430 | mutex_lock(&radio->lock); |
7002a4f3 | 431 | radio->curfreq = f->frequency; |
fdf9c997 AK |
432 | mutex_unlock(&radio->lock); |
433 | ||
417b7953 | 434 | retval = dsbr100_setfreq(radio, radio->curfreq); |
d25cb646 | 435 | if (retval < 0) |
aa82661b | 436 | dev_warn(&radio->usbdev->dev, "Set frequency failed\n"); |
7002a4f3 DL |
437 | return 0; |
438 | } | |
5aff308c | 439 | |
7002a4f3 DL |
440 | static int vidioc_g_frequency(struct file *file, void *priv, |
441 | struct v4l2_frequency *f) | |
442 | { | |
c170ecf4 | 443 | struct dsbr100_device *radio = video_drvdata(file); |
5aff308c | 444 | |
3a0efc32 AK |
445 | /* safety check */ |
446 | if (radio->removed) | |
447 | return -EIO; | |
448 | ||
7002a4f3 DL |
449 | f->type = V4L2_TUNER_RADIO; |
450 | f->frequency = radio->curfreq; | |
451 | return 0; | |
452 | } | |
5aff308c | 453 | |
7002a4f3 DL |
454 | static int vidioc_queryctrl(struct file *file, void *priv, |
455 | struct v4l2_queryctrl *qc) | |
456 | { | |
406827cc AK |
457 | switch (qc->id) { |
458 | case V4L2_CID_AUDIO_MUTE: | |
459 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
7002a4f3 | 460 | } |
406827cc | 461 | |
7002a4f3 DL |
462 | return -EINVAL; |
463 | } | |
5aff308c | 464 | |
7002a4f3 DL |
465 | static int vidioc_g_ctrl(struct file *file, void *priv, |
466 | struct v4l2_control *ctrl) | |
467 | { | |
c170ecf4 | 468 | struct dsbr100_device *radio = video_drvdata(file); |
1da177e4 | 469 | |
3a0efc32 AK |
470 | /* safety check */ |
471 | if (radio->removed) | |
472 | return -EIO; | |
473 | ||
7002a4f3 DL |
474 | switch (ctrl->id) { |
475 | case V4L2_CID_AUDIO_MUTE: | |
476 | ctrl->value = radio->muted; | |
477 | return 0; | |
478 | } | |
479 | return -EINVAL; | |
480 | } | |
5aff308c | 481 | |
7002a4f3 DL |
482 | static int vidioc_s_ctrl(struct file *file, void *priv, |
483 | struct v4l2_control *ctrl) | |
484 | { | |
c170ecf4 | 485 | struct dsbr100_device *radio = video_drvdata(file); |
417b7953 | 486 | int retval; |
5aff308c | 487 | |
3a0efc32 AK |
488 | /* safety check */ |
489 | if (radio->removed) | |
490 | return -EIO; | |
491 | ||
7002a4f3 DL |
492 | switch (ctrl->id) { |
493 | case V4L2_CID_AUDIO_MUTE: | |
494 | if (ctrl->value) { | |
417b7953 | 495 | retval = dsbr100_stop(radio); |
d25cb646 | 496 | if (retval < 0) { |
aa82661b GKH |
497 | dev_warn(&radio->usbdev->dev, |
498 | "Radio did not respond properly\n"); | |
90b698dd AK |
499 | return -EBUSY; |
500 | } | |
7002a4f3 | 501 | } else { |
417b7953 | 502 | retval = dsbr100_start(radio); |
d25cb646 | 503 | if (retval < 0) { |
aa82661b GKH |
504 | dev_warn(&radio->usbdev->dev, |
505 | "Radio did not respond properly\n"); | |
90b698dd AK |
506 | return -EBUSY; |
507 | } | |
1da177e4 | 508 | } |
7002a4f3 | 509 | return 0; |
1da177e4 | 510 | } |
7002a4f3 | 511 | return -EINVAL; |
1da177e4 LT |
512 | } |
513 | ||
7002a4f3 DL |
514 | static int vidioc_g_audio(struct file *file, void *priv, |
515 | struct v4l2_audio *a) | |
1da177e4 | 516 | { |
7002a4f3 DL |
517 | if (a->index > 1) |
518 | return -EINVAL; | |
519 | ||
520 | strcpy(a->name, "Radio"); | |
521 | a->capability = V4L2_AUDCAP_STEREO; | |
522 | return 0; | |
523 | } | |
524 | ||
525 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
526 | { | |
527 | *i = 0; | |
528 | return 0; | |
529 | } | |
530 | ||
531 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
532 | { | |
533 | if (i != 0) | |
534 | return -EINVAL; | |
535 | return 0; | |
536 | } | |
537 | ||
538 | static int vidioc_s_audio(struct file *file, void *priv, | |
539 | struct v4l2_audio *a) | |
540 | { | |
541 | if (a->index != 0) | |
542 | return -EINVAL; | |
543 | return 0; | |
1da177e4 LT |
544 | } |
545 | ||
bec43661 | 546 | static int usb_dsbr100_open(struct file *file) |
1da177e4 | 547 | { |
c170ecf4 | 548 | struct dsbr100_device *radio = video_drvdata(file); |
b9f35737 | 549 | int retval; |
1da177e4 | 550 | |
d56dc612 | 551 | lock_kernel(); |
1da177e4 | 552 | radio->users = 1; |
5aff308c AC |
553 | radio->muted = 1; |
554 | ||
417b7953 AK |
555 | retval = dsbr100_start(radio); |
556 | if (retval < 0) { | |
aa82661b GKH |
557 | dev_warn(&radio->usbdev->dev, |
558 | "Radio did not start up properly\n"); | |
1da177e4 | 559 | radio->users = 0; |
d56dc612 | 560 | unlock_kernel(); |
1da177e4 LT |
561 | return -EIO; |
562 | } | |
b9f35737 AK |
563 | |
564 | retval = dsbr100_setfreq(radio, radio->curfreq); | |
d25cb646 | 565 | if (retval < 0) |
290588e0 AK |
566 | dev_warn(&radio->usbdev->dev, |
567 | "set frequency failed\n"); | |
b9f35737 | 568 | |
d56dc612 | 569 | unlock_kernel(); |
1da177e4 LT |
570 | return 0; |
571 | } | |
572 | ||
bec43661 | 573 | static int usb_dsbr100_close(struct file *file) |
1da177e4 | 574 | { |
c170ecf4 | 575 | struct dsbr100_device *radio = video_drvdata(file); |
3a0efc32 | 576 | int retval; |
1da177e4 LT |
577 | |
578 | if (!radio) | |
579 | return -ENODEV; | |
3a0efc32 | 580 | |
fdf9c997 | 581 | mutex_lock(&radio->lock); |
1da177e4 | 582 | radio->users = 0; |
fdf9c997 AK |
583 | mutex_unlock(&radio->lock); |
584 | ||
3a0efc32 AK |
585 | if (!radio->removed) { |
586 | retval = dsbr100_stop(radio); | |
d25cb646 | 587 | if (retval < 0) { |
3a0efc32 AK |
588 | dev_warn(&radio->usbdev->dev, |
589 | "dsbr100_stop failed\n"); | |
590 | } | |
591 | ||
1da177e4 LT |
592 | } |
593 | return 0; | |
594 | } | |
595 | ||
04e0ffbb AK |
596 | /* Suspend device - stop device. */ |
597 | static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message) | |
598 | { | |
599 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
600 | int retval; | |
601 | ||
602 | retval = dsbr100_stop(radio); | |
d25cb646 | 603 | if (retval < 0) |
04e0ffbb AK |
604 | dev_warn(&intf->dev, "dsbr100_stop failed\n"); |
605 | ||
606 | dev_info(&intf->dev, "going into suspend..\n"); | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | /* Resume device - start device. */ | |
612 | static int usb_dsbr100_resume(struct usb_interface *intf) | |
613 | { | |
614 | struct dsbr100_device *radio = usb_get_intfdata(intf); | |
615 | int retval; | |
616 | ||
617 | retval = dsbr100_start(radio); | |
d25cb646 | 618 | if (retval < 0) |
04e0ffbb AK |
619 | dev_warn(&intf->dev, "dsbr100_start failed\n"); |
620 | ||
621 | dev_info(&intf->dev, "coming out of suspend..\n"); | |
622 | ||
623 | return 0; | |
624 | } | |
625 | ||
fc55bcb0 | 626 | /* free data structures */ |
3a0efc32 AK |
627 | static void usb_dsbr100_video_device_release(struct video_device *videodev) |
628 | { | |
629 | struct dsbr100_device *radio = videodev_to_radio(videodev); | |
630 | ||
406827cc | 631 | v4l2_device_unregister(&radio->v4l2_dev); |
3a0efc32 AK |
632 | kfree(radio->transfer_buffer); |
633 | kfree(radio); | |
634 | } | |
635 | ||
7002a4f3 | 636 | /* File system interface */ |
bec43661 | 637 | static const struct v4l2_file_operations usb_dsbr100_fops = { |
7002a4f3 DL |
638 | .owner = THIS_MODULE, |
639 | .open = usb_dsbr100_open, | |
640 | .release = usb_dsbr100_close, | |
641 | .ioctl = video_ioctl2, | |
7002a4f3 DL |
642 | }; |
643 | ||
a399810c | 644 | static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = { |
7002a4f3 DL |
645 | .vidioc_querycap = vidioc_querycap, |
646 | .vidioc_g_tuner = vidioc_g_tuner, | |
647 | .vidioc_s_tuner = vidioc_s_tuner, | |
648 | .vidioc_g_frequency = vidioc_g_frequency, | |
649 | .vidioc_s_frequency = vidioc_s_frequency, | |
650 | .vidioc_queryctrl = vidioc_queryctrl, | |
651 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
652 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
653 | .vidioc_g_audio = vidioc_g_audio, | |
654 | .vidioc_s_audio = vidioc_s_audio, | |
655 | .vidioc_g_input = vidioc_g_input, | |
656 | .vidioc_s_input = vidioc_s_input, | |
657 | }; | |
658 | ||
fc55bcb0 | 659 | /* check if the device is present and register with v4l and usb if it is */ |
7002a4f3 DL |
660 | static int usb_dsbr100_probe(struct usb_interface *intf, |
661 | const struct usb_device_id *id) | |
662 | { | |
663 | struct dsbr100_device *radio; | |
406827cc | 664 | struct v4l2_device *v4l2_dev; |
417b7953 | 665 | int retval; |
7002a4f3 | 666 | |
406827cc | 667 | radio = kzalloc(sizeof(struct dsbr100_device), GFP_KERNEL); |
223377e7 AK |
668 | |
669 | if (!radio) | |
7002a4f3 | 670 | return -ENOMEM; |
223377e7 AK |
671 | |
672 | radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); | |
673 | ||
674 | if (!(radio->transfer_buffer)) { | |
863c86dd ON |
675 | kfree(radio); |
676 | return -ENOMEM; | |
677 | } | |
223377e7 | 678 | |
406827cc AK |
679 | v4l2_dev = &radio->v4l2_dev; |
680 | ||
681 | retval = v4l2_device_register(&intf->dev, v4l2_dev); | |
682 | if (retval < 0) { | |
683 | v4l2_err(v4l2_dev, "couldn't register v4l2_device\n"); | |
684 | kfree(radio->transfer_buffer); | |
685 | kfree(radio); | |
686 | return retval; | |
687 | } | |
688 | ||
689 | strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name)); | |
690 | radio->videodev.v4l2_dev = v4l2_dev; | |
691 | radio->videodev.fops = &usb_dsbr100_fops; | |
692 | radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops; | |
693 | radio->videodev.release = usb_dsbr100_video_device_release; | |
694 | ||
3a0efc32 | 695 | mutex_init(&radio->lock); |
3a0efc32 | 696 | |
7002a4f3 DL |
697 | radio->removed = 0; |
698 | radio->users = 0; | |
699 | radio->usbdev = interface_to_usbdev(intf); | |
223377e7 | 700 | radio->curfreq = FREQ_MIN * FREQ_MUL; |
406827cc | 701 | |
3a0efc32 | 702 | video_set_drvdata(&radio->videodev, radio); |
406827cc | 703 | |
417b7953 AK |
704 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr); |
705 | if (retval < 0) { | |
406827cc AK |
706 | v4l2_err(v4l2_dev, "couldn't register video device\n"); |
707 | v4l2_device_unregister(v4l2_dev); | |
863c86dd | 708 | kfree(radio->transfer_buffer); |
7002a4f3 DL |
709 | kfree(radio); |
710 | return -EIO; | |
711 | } | |
712 | usb_set_intfdata(intf, radio); | |
713 | return 0; | |
714 | } | |
715 | ||
1da177e4 LT |
716 | static int __init dsbr100_init(void) |
717 | { | |
718 | int retval = usb_register(&usb_dsbr100_driver); | |
a482f327 GKH |
719 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
720 | DRIVER_DESC "\n"); | |
1da177e4 LT |
721 | return retval; |
722 | } | |
723 | ||
724 | static void __exit dsbr100_exit(void) | |
725 | { | |
726 | usb_deregister(&usb_dsbr100_driver); | |
727 | } | |
728 | ||
729 | module_init (dsbr100_init); | |
730 | module_exit (dsbr100_exit); | |
731 | ||
732 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
733 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
734 | MODULE_LICENSE("GPL"); |