Commit | Line | Data |
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2aa72f3b AK |
1 | /* |
2 | * A driver for the AverMedia MR 800 USB FM radio. This device plugs | |
3 | * into both the USB and an analog audio input, so this thing | |
4 | * only deals with initialization and frequency setting, the | |
5 | * audio data has to be handled by a sound driver. | |
6 | * | |
7 | * Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
71f07d94 | 25 | * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c |
2aa72f3b AK |
26 | * |
27 | * When work was looked pretty good, i discover this: | |
28 | * http://av-usbradio.sourceforge.net/index.php | |
29 | * http://sourceforge.net/projects/av-usbradio/ | |
30 | * Latest release of theirs project was in 2005. | |
31 | * Probably, this driver could be improved trough using their | |
32 | * achievements (specifications given). | |
71f07d94 AK |
33 | * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio |
34 | * in 2007. He allowed to use his driver to improve current mr800 radio driver. | |
35 | * http://kerneltrap.org/mailarchive/linux-usb-devel/2007/10/11/342492 | |
2aa72f3b | 36 | * |
2aa72f3b AK |
37 | * Version 0.01: First working version. |
38 | * It's required to blacklist AverMedia USB Radio | |
39 | * in usbhid/hid-quirks.c | |
71f07d94 AK |
40 | * Version 0.10: A lot of cleanups and fixes: unpluging the device, |
41 | * few mutex locks were added, codinstyle issues, etc. | |
42 | * Added stereo support. Thanks to | |
43 | * Douglas Schilling Landgraf <dougsland@gmail.com> and | |
44 | * David Ellingsworth <david@identd.dyndns.org> | |
45 | * for discussion, help and support. | |
b466248d | 46 | * Version 0.11: Converted to v4l2_device. |
2aa72f3b AK |
47 | * |
48 | * Many things to do: | |
3dbda77e | 49 | * - Correct power management of device (suspend & resume) |
2aa72f3b | 50 | * - Add code for scanning and smooth tuning |
2aa72f3b AK |
51 | * - Add code for sensitivity value |
52 | * - Correct mistakes | |
53 | * - In Japan another FREQ_MIN and FREQ_MAX | |
54 | */ | |
55 | ||
56 | /* kernel includes */ | |
57 | #include <linux/kernel.h> | |
58 | #include <linux/module.h> | |
59 | #include <linux/init.h> | |
60 | #include <linux/slab.h> | |
405f5571 | 61 | #include <linux/smp_lock.h> |
2aa72f3b AK |
62 | #include <linux/input.h> |
63 | #include <linux/videodev2.h> | |
b466248d | 64 | #include <media/v4l2-device.h> |
2aa72f3b AK |
65 | #include <media/v4l2-ioctl.h> |
66 | #include <linux/usb.h> | |
67 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ | |
24c44d85 | 68 | #include <linux/mutex.h> |
2aa72f3b AK |
69 | |
70 | /* driver and module definitions */ | |
71 | #define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" | |
72 | #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver" | |
b466248d AK |
73 | #define DRIVER_VERSION "0.11" |
74 | #define RADIO_VERSION KERNEL_VERSION(0, 1, 1) | |
2aa72f3b AK |
75 | |
76 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
77 | MODULE_DESCRIPTION(DRIVER_DESC); | |
78 | MODULE_LICENSE("GPL"); | |
79 | ||
80 | #define USB_AMRADIO_VENDOR 0x07ca | |
81 | #define USB_AMRADIO_PRODUCT 0xb800 | |
82 | ||
e60b022e AK |
83 | /* dev_warn macro with driver name */ |
84 | #define MR800_DRIVER_NAME "radio-mr800" | |
85 | #define amradio_dev_warn(dev, fmt, arg...) \ | |
86 | dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
87 | ||
2aa72f3b AK |
88 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
89 | #define BUFFER_LENGTH 8 | |
90 | #define USB_TIMEOUT 500 | |
91 | ||
92 | /* Frequency limits in MHz -- these are European values. For Japanese | |
93 | devices, that would be 76 and 91. */ | |
94 | #define FREQ_MIN 87.5 | |
95 | #define FREQ_MAX 108.0 | |
96 | #define FREQ_MUL 16000 | |
97 | ||
db821804 AK |
98 | /* |
99 | * Commands that device should understand | |
100 | * List isnt full and will be updated with implementation of new functions | |
101 | */ | |
f7c1a380 | 102 | #define AMRADIO_SET_FREQ 0xa4 |
db821804 | 103 | #define AMRADIO_SET_MUTE 0xab |
1bb16d71 | 104 | #define AMRADIO_SET_MONO 0xae |
db821804 AK |
105 | |
106 | /* Comfortable defines for amradio_set_mute */ | |
107 | #define AMRADIO_START 0x00 | |
108 | #define AMRADIO_STOP 0x01 | |
109 | ||
1bb16d71 AK |
110 | /* Comfortable defines for amradio_set_stereo */ |
111 | #define WANT_STEREO 0x00 | |
112 | #define WANT_MONO 0x01 | |
113 | ||
2aa72f3b AK |
114 | /* module parameter */ |
115 | static int radio_nr = -1; | |
116 | module_param(radio_nr, int, 0); | |
117 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); | |
118 | ||
2aa72f3b AK |
119 | static int usb_amradio_probe(struct usb_interface *intf, |
120 | const struct usb_device_id *id); | |
121 | static void usb_amradio_disconnect(struct usb_interface *intf); | |
bec43661 HV |
122 | static int usb_amradio_open(struct file *file); |
123 | static int usb_amradio_close(struct file *file); | |
2aa72f3b AK |
124 | static int usb_amradio_suspend(struct usb_interface *intf, |
125 | pm_message_t message); | |
126 | static int usb_amradio_resume(struct usb_interface *intf); | |
127 | ||
128 | /* Data for one (physical) device */ | |
129 | struct amradio_device { | |
130 | /* reference to USB and video device */ | |
131 | struct usb_device *usbdev; | |
7a7d92e0 | 132 | struct video_device videodev; |
b466248d | 133 | struct v4l2_device v4l2_dev; |
2aa72f3b AK |
134 | |
135 | unsigned char *buffer; | |
136 | struct mutex lock; /* buffer locking */ | |
137 | int curfreq; | |
138 | int stereo; | |
139 | int users; | |
2aa72f3b AK |
140 | int muted; |
141 | }; | |
142 | ||
ceb99e1b DE |
143 | #define vdev_to_amradio(r) container_of(r, struct amradio_device, videodev) |
144 | ||
2aa72f3b AK |
145 | /* USB Device ID List */ |
146 | static struct usb_device_id usb_amradio_device_table[] = { | |
147 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
148 | USB_CLASS_HID, 0, 0) }, | |
149 | { } /* Terminating entry */ | |
150 | }; | |
151 | ||
152 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
153 | ||
154 | /* USB subsystem interface */ | |
155 | static struct usb_driver usb_amradio_driver = { | |
e60b022e | 156 | .name = MR800_DRIVER_NAME, |
2aa72f3b AK |
157 | .probe = usb_amradio_probe, |
158 | .disconnect = usb_amradio_disconnect, | |
159 | .suspend = usb_amradio_suspend, | |
160 | .resume = usb_amradio_resume, | |
161 | .reset_resume = usb_amradio_resume, | |
162 | .id_table = usb_amradio_device_table, | |
f2ce9179 | 163 | .supports_autosuspend = 0, |
2aa72f3b AK |
164 | }; |
165 | ||
db821804 AK |
166 | /* switch on/off the radio. Send 8 bytes to device */ |
167 | static int amradio_set_mute(struct amradio_device *radio, char argument) | |
2aa72f3b AK |
168 | { |
169 | int retval; | |
170 | int size; | |
171 | ||
4aebc289 | 172 | BUG_ON(!mutex_is_locked(&radio->lock)); |
2aa72f3b AK |
173 | |
174 | radio->buffer[0] = 0x00; | |
175 | radio->buffer[1] = 0x55; | |
176 | radio->buffer[2] = 0xaa; | |
177 | radio->buffer[3] = 0x00; | |
db821804 AK |
178 | radio->buffer[4] = AMRADIO_SET_MUTE; |
179 | radio->buffer[5] = argument; | |
2aa72f3b AK |
180 | radio->buffer[6] = 0x00; |
181 | radio->buffer[7] = 0x00; | |
182 | ||
183 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
184 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
185 | ||
4aebc289 | 186 | if (retval < 0 || size != BUFFER_LENGTH) |
2aa72f3b | 187 | return retval; |
2aa72f3b | 188 | |
db821804 | 189 | radio->muted = argument; |
2aa72f3b AK |
190 | |
191 | return retval; | |
192 | } | |
193 | ||
194 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
195 | static int amradio_setfreq(struct amradio_device *radio, int freq) | |
196 | { | |
197 | int retval; | |
198 | int size; | |
f7c1a380 | 199 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
2aa72f3b | 200 | |
4aebc289 | 201 | BUG_ON(!mutex_is_locked(&radio->lock)); |
2aa72f3b AK |
202 | |
203 | radio->buffer[0] = 0x00; | |
204 | radio->buffer[1] = 0x55; | |
205 | radio->buffer[2] = 0xaa; | |
206 | radio->buffer[3] = 0x03; | |
f7c1a380 | 207 | radio->buffer[4] = AMRADIO_SET_FREQ; |
2aa72f3b AK |
208 | radio->buffer[5] = 0x00; |
209 | radio->buffer[6] = 0x00; | |
210 | radio->buffer[7] = 0x08; | |
211 | ||
212 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
213 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
214 | ||
4aebc289 | 215 | if (retval < 0 || size != BUFFER_LENGTH) |
2aa72f3b | 216 | return retval; |
2aa72f3b AK |
217 | |
218 | /* frequency is calculated from freq_send and placed in first 2 bytes */ | |
219 | radio->buffer[0] = (freq_send >> 8) & 0xff; | |
220 | radio->buffer[1] = freq_send & 0xff; | |
221 | radio->buffer[2] = 0x01; | |
222 | radio->buffer[3] = 0x00; | |
223 | radio->buffer[4] = 0x00; | |
224 | /* 5 and 6 bytes of buffer already = 0x00 */ | |
225 | radio->buffer[7] = 0x00; | |
226 | ||
227 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
228 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
229 | ||
1bb16d71 AK |
230 | return retval; |
231 | } | |
232 | ||
233 | static int amradio_set_stereo(struct amradio_device *radio, char argument) | |
234 | { | |
235 | int retval; | |
236 | int size; | |
237 | ||
4aebc289 | 238 | BUG_ON(!mutex_is_locked(&radio->lock)); |
1bb16d71 AK |
239 | |
240 | radio->buffer[0] = 0x00; | |
241 | radio->buffer[1] = 0x55; | |
242 | radio->buffer[2] = 0xaa; | |
243 | radio->buffer[3] = 0x00; | |
244 | radio->buffer[4] = AMRADIO_SET_MONO; | |
245 | radio->buffer[5] = argument; | |
246 | radio->buffer[6] = 0x00; | |
247 | radio->buffer[7] = 0x00; | |
248 | ||
249 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
250 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
251 | ||
252 | if (retval < 0 || size != BUFFER_LENGTH) { | |
253 | radio->stereo = -1; | |
1bb16d71 AK |
254 | return retval; |
255 | } | |
256 | ||
257 | radio->stereo = 1; | |
2aa72f3b AK |
258 | |
259 | return retval; | |
260 | } | |
261 | ||
71f07d94 AK |
262 | /* Handle unplugging the device. |
263 | * We call video_unregister_device in any case. | |
264 | * The last function called in this procedure is | |
265 | * usb_amradio_device_release. | |
266 | */ | |
2aa72f3b AK |
267 | static void usb_amradio_disconnect(struct usb_interface *intf) |
268 | { | |
269 | struct amradio_device *radio = usb_get_intfdata(intf); | |
270 | ||
f4e9043e | 271 | mutex_lock(&radio->lock); |
26452bfe | 272 | radio->usbdev = NULL; |
f4e9043e | 273 | mutex_unlock(&radio->lock); |
2aa72f3b | 274 | |
f4e9043e | 275 | usb_set_intfdata(intf, NULL); |
b466248d | 276 | v4l2_device_disconnect(&radio->v4l2_dev); |
4e361657 | 277 | video_unregister_device(&radio->videodev); |
2aa72f3b AK |
278 | } |
279 | ||
280 | /* vidioc_querycap - query device capabilities */ | |
281 | static int vidioc_querycap(struct file *file, void *priv, | |
282 | struct v4l2_capability *v) | |
283 | { | |
ceb99e1b | 284 | struct amradio_device *radio = file->private_data; |
c7181cfa | 285 | |
2aa72f3b AK |
286 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
287 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 288 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
2aa72f3b AK |
289 | v->version = RADIO_VERSION; |
290 | v->capabilities = V4L2_CAP_TUNER; | |
291 | return 0; | |
292 | } | |
293 | ||
294 | /* vidioc_g_tuner - get tuner attributes */ | |
295 | static int vidioc_g_tuner(struct file *file, void *priv, | |
296 | struct v4l2_tuner *v) | |
297 | { | |
ceb99e1b | 298 | struct amradio_device *radio = file->private_data; |
1bb16d71 | 299 | int retval; |
2aa72f3b | 300 | |
eac000a9 DE |
301 | if (v->index > 0) |
302 | return -EINVAL; | |
2aa72f3b AK |
303 | |
304 | /* TODO: Add function which look is signal stereo or not | |
305 | * amradio_getstat(radio); | |
306 | */ | |
1bb16d71 AK |
307 | |
308 | /* we call amradio_set_stereo to set radio->stereo | |
309 | * Honestly, amradio_getstat should cover this in future and | |
310 | * amradio_set_stereo shouldn't be here | |
311 | */ | |
312 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
313 | if (retval < 0) | |
7a7d92e0 | 314 | amradio_dev_warn(&radio->videodev.dev, |
1bb16d71 AK |
315 | "set stereo failed\n"); |
316 | ||
2aa72f3b AK |
317 | strcpy(v->name, "FM"); |
318 | v->type = V4L2_TUNER_RADIO; | |
319 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
320 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
321 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
322 | v->capability = V4L2_TUNER_CAP_LOW; | |
323 | if (radio->stereo) | |
324 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
325 | else | |
326 | v->audmode = V4L2_TUNER_MODE_MONO; | |
327 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ | |
328 | v->afc = 0; /* Don't know what is this */ | |
4aebc289 | 329 | |
4aebc289 | 330 | return retval; |
2aa72f3b AK |
331 | } |
332 | ||
333 | /* vidioc_s_tuner - set tuner attributes */ | |
334 | static int vidioc_s_tuner(struct file *file, void *priv, | |
335 | struct v4l2_tuner *v) | |
336 | { | |
ceb99e1b | 337 | struct amradio_device *radio = file->private_data; |
eac000a9 | 338 | int retval = -EINVAL; |
3480130a | 339 | |
eac000a9 DE |
340 | if (v->index > 0) |
341 | return -EINVAL; | |
1bb16d71 AK |
342 | |
343 | /* mono/stereo selector */ | |
344 | switch (v->audmode) { | |
345 | case V4L2_TUNER_MODE_MONO: | |
346 | retval = amradio_set_stereo(radio, WANT_MONO); | |
347 | if (retval < 0) | |
7a7d92e0 | 348 | amradio_dev_warn(&radio->videodev.dev, |
1bb16d71 AK |
349 | "set mono failed\n"); |
350 | break; | |
351 | case V4L2_TUNER_MODE_STEREO: | |
352 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
353 | if (retval < 0) | |
7a7d92e0 | 354 | amradio_dev_warn(&radio->videodev.dev, |
1bb16d71 AK |
355 | "set stereo failed\n"); |
356 | break; | |
1bb16d71 AK |
357 | } |
358 | ||
4aebc289 | 359 | return retval; |
2aa72f3b AK |
360 | } |
361 | ||
362 | /* vidioc_s_frequency - set tuner radio frequency */ | |
363 | static int vidioc_s_frequency(struct file *file, void *priv, | |
364 | struct v4l2_frequency *f) | |
365 | { | |
ceb99e1b | 366 | struct amradio_device *radio = file->private_data; |
eac000a9 | 367 | int retval = 0; |
3480130a | 368 | |
2aa72f3b | 369 | radio->curfreq = f->frequency; |
52433bbb | 370 | |
a5d69475 AK |
371 | retval = amradio_setfreq(radio, radio->curfreq); |
372 | if (retval < 0) | |
7a7d92e0 | 373 | amradio_dev_warn(&radio->videodev.dev, |
e60b022e | 374 | "set frequency failed\n"); |
4aebc289 | 375 | |
4aebc289 | 376 | return retval; |
2aa72f3b AK |
377 | } |
378 | ||
379 | /* vidioc_g_frequency - get tuner radio frequency */ | |
380 | static int vidioc_g_frequency(struct file *file, void *priv, | |
381 | struct v4l2_frequency *f) | |
382 | { | |
ceb99e1b | 383 | struct amradio_device *radio = file->private_data; |
3480130a | 384 | |
2aa72f3b AK |
385 | f->type = V4L2_TUNER_RADIO; |
386 | f->frequency = radio->curfreq; | |
4aebc289 | 387 | |
eac000a9 | 388 | return 0; |
2aa72f3b AK |
389 | } |
390 | ||
391 | /* vidioc_queryctrl - enumerate control items */ | |
392 | static int vidioc_queryctrl(struct file *file, void *priv, | |
393 | struct v4l2_queryctrl *qc) | |
394 | { | |
b466248d AK |
395 | switch (qc->id) { |
396 | case V4L2_CID_AUDIO_MUTE: | |
397 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
2aa72f3b | 398 | } |
b466248d | 399 | |
2aa72f3b AK |
400 | return -EINVAL; |
401 | } | |
402 | ||
403 | /* vidioc_g_ctrl - get the value of a control */ | |
404 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
405 | struct v4l2_control *ctrl) | |
406 | { | |
ceb99e1b | 407 | struct amradio_device *radio = file->private_data; |
3480130a | 408 | |
2aa72f3b AK |
409 | switch (ctrl->id) { |
410 | case V4L2_CID_AUDIO_MUTE: | |
411 | ctrl->value = radio->muted; | |
eac000a9 | 412 | return 0; |
2aa72f3b | 413 | } |
4aebc289 | 414 | |
eac000a9 | 415 | return -EINVAL; |
2aa72f3b AK |
416 | } |
417 | ||
418 | /* vidioc_s_ctrl - set the value of a control */ | |
419 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
420 | struct v4l2_control *ctrl) | |
421 | { | |
ceb99e1b | 422 | struct amradio_device *radio = file->private_data; |
4aebc289 DE |
423 | int retval = -EINVAL; |
424 | ||
2aa72f3b AK |
425 | switch (ctrl->id) { |
426 | case V4L2_CID_AUDIO_MUTE: | |
427 | if (ctrl->value) { | |
db821804 | 428 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
a5d69475 | 429 | if (retval < 0) { |
7a7d92e0 | 430 | amradio_dev_warn(&radio->videodev.dev, |
e60b022e | 431 | "amradio_stop failed\n"); |
2aa72f3b AK |
432 | } |
433 | } else { | |
db821804 | 434 | retval = amradio_set_mute(radio, AMRADIO_START); |
a5d69475 | 435 | if (retval < 0) { |
7a7d92e0 | 436 | amradio_dev_warn(&radio->videodev.dev, |
e60b022e | 437 | "amradio_start failed\n"); |
2aa72f3b AK |
438 | } |
439 | } | |
4aebc289 | 440 | break; |
2aa72f3b | 441 | } |
4aebc289 | 442 | |
4aebc289 | 443 | return retval; |
2aa72f3b AK |
444 | } |
445 | ||
446 | /* vidioc_g_audio - get audio attributes */ | |
447 | static int vidioc_g_audio(struct file *file, void *priv, | |
448 | struct v4l2_audio *a) | |
449 | { | |
450 | if (a->index > 1) | |
451 | return -EINVAL; | |
452 | ||
453 | strcpy(a->name, "Radio"); | |
454 | a->capability = V4L2_AUDCAP_STEREO; | |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* vidioc_s_audio - set audio attributes */ | |
459 | static int vidioc_s_audio(struct file *file, void *priv, | |
460 | struct v4l2_audio *a) | |
461 | { | |
462 | if (a->index != 0) | |
463 | return -EINVAL; | |
464 | return 0; | |
465 | } | |
466 | ||
467 | /* vidioc_g_input - get input */ | |
468 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
469 | { | |
470 | *i = 0; | |
471 | return 0; | |
472 | } | |
473 | ||
474 | /* vidioc_s_input - set input */ | |
475 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
476 | { | |
477 | if (i != 0) | |
478 | return -EINVAL; | |
479 | return 0; | |
480 | } | |
481 | ||
482 | /* open device - amradio_start() and amradio_setfreq() */ | |
bec43661 | 483 | static int usb_amradio_open(struct file *file) |
2aa72f3b | 484 | { |
ceb99e1b | 485 | struct amradio_device *radio = vdev_to_amradio(video_devdata(file)); |
4aebc289 | 486 | int retval = 0; |
2aa72f3b | 487 | |
4aebc289 DE |
488 | mutex_lock(&radio->lock); |
489 | ||
26452bfe | 490 | if (!radio->usbdev) { |
4aebc289 DE |
491 | retval = -EIO; |
492 | goto unlock; | |
493 | } | |
0fabb783 | 494 | |
ceb99e1b | 495 | file->private_data = radio; |
2aa72f3b AK |
496 | radio->users = 1; |
497 | radio->muted = 1; | |
498 | ||
db821804 | 499 | retval = amradio_set_mute(radio, AMRADIO_START); |
a5d69475 | 500 | if (retval < 0) { |
7a7d92e0 | 501 | amradio_dev_warn(&radio->videodev.dev, |
e60b022e | 502 | "radio did not start up properly\n"); |
2aa72f3b | 503 | radio->users = 0; |
4aebc289 | 504 | goto unlock; |
2aa72f3b | 505 | } |
a5d69475 | 506 | |
1bb16d71 AK |
507 | retval = amradio_set_stereo(radio, WANT_STEREO); |
508 | if (retval < 0) | |
7a7d92e0 | 509 | amradio_dev_warn(&radio->videodev.dev, |
1bb16d71 AK |
510 | "set stereo failed\n"); |
511 | ||
a5d69475 AK |
512 | retval = amradio_setfreq(radio, radio->curfreq); |
513 | if (retval < 0) | |
7a7d92e0 | 514 | amradio_dev_warn(&radio->videodev.dev, |
e60b022e | 515 | "set frequency failed\n"); |
0fabb783 | 516 | |
4aebc289 DE |
517 | unlock: |
518 | mutex_unlock(&radio->lock); | |
519 | return retval; | |
2aa72f3b AK |
520 | } |
521 | ||
f4e9043e | 522 | /*close device */ |
bec43661 | 523 | static int usb_amradio_close(struct file *file) |
2aa72f3b | 524 | { |
ceb99e1b | 525 | struct amradio_device *radio = file->private_data; |
4aebc289 | 526 | int retval = 0; |
3480130a | 527 | |
52433bbb | 528 | mutex_lock(&radio->lock); |
4aebc289 | 529 | |
26452bfe | 530 | if (!radio->usbdev) { |
4aebc289 DE |
531 | retval = -EIO; |
532 | goto unlock; | |
533 | } | |
534 | ||
2aa72f3b | 535 | radio->users = 0; |
3480130a | 536 | |
26452bfe DE |
537 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
538 | if (retval < 0) | |
539 | amradio_dev_warn(&radio->videodev.dev, | |
540 | "amradio_stop failed\n"); | |
3480130a | 541 | |
4aebc289 DE |
542 | unlock: |
543 | mutex_unlock(&radio->lock); | |
544 | return retval; | |
2aa72f3b AK |
545 | } |
546 | ||
eac000a9 DE |
547 | static long usb_amradio_ioctl(struct file *file, unsigned int cmd, |
548 | unsigned long arg) | |
549 | { | |
550 | struct amradio_device *radio = file->private_data; | |
551 | long retval = 0; | |
552 | ||
553 | mutex_lock(&radio->lock); | |
554 | ||
26452bfe | 555 | if (!radio->usbdev) { |
eac000a9 DE |
556 | retval = -EIO; |
557 | goto unlock; | |
558 | } | |
559 | ||
560 | retval = video_ioctl2(file, cmd, arg); | |
561 | ||
562 | unlock: | |
563 | mutex_unlock(&radio->lock); | |
564 | return retval; | |
565 | } | |
566 | ||
2aa72f3b AK |
567 | /* Suspend device - stop device. Need to be checked and fixed */ |
568 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
569 | { | |
570 | struct amradio_device *radio = usb_get_intfdata(intf); | |
a5d69475 | 571 | int retval; |
2aa72f3b | 572 | |
4aebc289 DE |
573 | mutex_lock(&radio->lock); |
574 | ||
db821804 | 575 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
a5d69475 | 576 | if (retval < 0) |
e60b022e | 577 | dev_warn(&intf->dev, "amradio_stop failed\n"); |
2aa72f3b | 578 | |
e60b022e | 579 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b | 580 | |
4aebc289 | 581 | mutex_unlock(&radio->lock); |
2aa72f3b AK |
582 | return 0; |
583 | } | |
584 | ||
585 | /* Resume device - start device. Need to be checked and fixed */ | |
586 | static int usb_amradio_resume(struct usb_interface *intf) | |
587 | { | |
588 | struct amradio_device *radio = usb_get_intfdata(intf); | |
a5d69475 | 589 | int retval; |
2aa72f3b | 590 | |
4aebc289 DE |
591 | mutex_lock(&radio->lock); |
592 | ||
db821804 | 593 | retval = amradio_set_mute(radio, AMRADIO_START); |
a5d69475 | 594 | if (retval < 0) |
e60b022e | 595 | dev_warn(&intf->dev, "amradio_start failed\n"); |
2aa72f3b | 596 | |
e60b022e | 597 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b | 598 | |
4aebc289 | 599 | mutex_unlock(&radio->lock); |
2aa72f3b AK |
600 | return 0; |
601 | } | |
602 | ||
603 | /* File system interface */ | |
bec43661 | 604 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b AK |
605 | .owner = THIS_MODULE, |
606 | .open = usb_amradio_open, | |
607 | .release = usb_amradio_close, | |
eac000a9 | 608 | .ioctl = usb_amradio_ioctl, |
2aa72f3b AK |
609 | }; |
610 | ||
611 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
612 | .vidioc_querycap = vidioc_querycap, | |
613 | .vidioc_g_tuner = vidioc_g_tuner, | |
614 | .vidioc_s_tuner = vidioc_s_tuner, | |
615 | .vidioc_g_frequency = vidioc_g_frequency, | |
616 | .vidioc_s_frequency = vidioc_s_frequency, | |
617 | .vidioc_queryctrl = vidioc_queryctrl, | |
618 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
619 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
620 | .vidioc_g_audio = vidioc_g_audio, | |
621 | .vidioc_s_audio = vidioc_s_audio, | |
622 | .vidioc_g_input = vidioc_g_input, | |
623 | .vidioc_s_input = vidioc_s_input, | |
624 | }; | |
625 | ||
b466248d | 626 | static void usb_amradio_video_device_release(struct video_device *videodev) |
f4e9043e | 627 | { |
ceb99e1b | 628 | struct amradio_device *radio = vdev_to_amradio(videodev); |
f4e9043e | 629 | |
b466248d AK |
630 | v4l2_device_unregister(&radio->v4l2_dev); |
631 | ||
f4e9043e AK |
632 | /* free rest memory */ |
633 | kfree(radio->buffer); | |
634 | kfree(radio); | |
635 | } | |
636 | ||
a5d69475 | 637 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
638 | static int usb_amradio_probe(struct usb_interface *intf, |
639 | const struct usb_device_id *id) | |
640 | { | |
641 | struct amradio_device *radio; | |
1b8bbb3c | 642 | int retval = 0; |
2aa72f3b | 643 | |
b466248d | 644 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
2aa72f3b | 645 | |
8edafcc6 AK |
646 | if (!radio) { |
647 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
1b8bbb3c DE |
648 | retval = -ENOMEM; |
649 | goto err; | |
8edafcc6 | 650 | } |
2aa72f3b AK |
651 | |
652 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
653 | ||
8edafcc6 AK |
654 | if (!radio->buffer) { |
655 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
1b8bbb3c DE |
656 | retval = -ENOMEM; |
657 | goto err_nobuf; | |
2aa72f3b AK |
658 | } |
659 | ||
d1939e4c | 660 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
b466248d AK |
661 | if (retval < 0) { |
662 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); | |
1b8bbb3c | 663 | goto err_v4l2; |
b466248d AK |
664 | } |
665 | ||
d1939e4c | 666 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
7a7d92e0 | 667 | sizeof(radio->videodev.name)); |
d1939e4c | 668 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
7a7d92e0 DE |
669 | radio->videodev.fops = &usb_amradio_fops; |
670 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; | |
671 | radio->videodev.release = usb_amradio_video_device_release; | |
2aa72f3b | 672 | |
2aa72f3b AK |
673 | radio->users = 0; |
674 | radio->usbdev = interface_to_usbdev(intf); | |
675 | radio->curfreq = 95.16 * FREQ_MUL; | |
1bb16d71 | 676 | radio->stereo = -1; |
2aa72f3b AK |
677 | |
678 | mutex_init(&radio->lock); | |
679 | ||
7a7d92e0 | 680 | video_set_drvdata(&radio->videodev, radio); |
b466248d | 681 | |
7a7d92e0 DE |
682 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
683 | radio_nr); | |
a5d69475 | 684 | if (retval < 0) { |
65c51dc9 | 685 | dev_err(&intf->dev, "could not register video device\n"); |
1b8bbb3c | 686 | goto err_vdev; |
2aa72f3b AK |
687 | } |
688 | ||
689 | usb_set_intfdata(intf, radio); | |
690 | return 0; | |
1b8bbb3c DE |
691 | |
692 | err_vdev: | |
d1939e4c | 693 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
694 | err_v4l2: |
695 | kfree(radio->buffer); | |
696 | err_nobuf: | |
697 | kfree(radio); | |
698 | err: | |
699 | return retval; | |
2aa72f3b AK |
700 | } |
701 | ||
702 | static int __init amradio_init(void) | |
703 | { | |
704 | int retval = usb_register(&usb_amradio_driver); | |
705 | ||
e60b022e AK |
706 | pr_info(KBUILD_MODNAME |
707 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); | |
708 | ||
2aa72f3b | 709 | if (retval) |
e60b022e AK |
710 | pr_err(KBUILD_MODNAME |
711 | ": usb_register failed. Error number %d\n", retval); | |
712 | ||
2aa72f3b AK |
713 | return retval; |
714 | } | |
715 | ||
716 | static void __exit amradio_exit(void) | |
717 | { | |
718 | usb_deregister(&usb_amradio_driver); | |
719 | } | |
720 | ||
721 | module_init(amradio_init); | |
722 | module_exit(amradio_exit); | |
723 |