Commit | Line | Data |
---|---|---|
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. | |
af901ca1 | 31 | * Probably, this driver could be improved through using their |
2aa72f3b | 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 | ||
502d5016 DE |
88 | #define amradio_dev_err(dev, fmt, arg...) \ |
89 | dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
90 | ||
2aa72f3b AK |
91 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
92 | #define BUFFER_LENGTH 8 | |
93 | #define USB_TIMEOUT 500 | |
94 | ||
95 | /* Frequency limits in MHz -- these are European values. For Japanese | |
96 | devices, that would be 76 and 91. */ | |
97 | #define FREQ_MIN 87.5 | |
98 | #define FREQ_MAX 108.0 | |
99 | #define FREQ_MUL 16000 | |
100 | ||
db821804 AK |
101 | /* |
102 | * Commands that device should understand | |
103 | * List isnt full and will be updated with implementation of new functions | |
104 | */ | |
f7c1a380 | 105 | #define AMRADIO_SET_FREQ 0xa4 |
db821804 | 106 | #define AMRADIO_SET_MUTE 0xab |
1bb16d71 | 107 | #define AMRADIO_SET_MONO 0xae |
db821804 AK |
108 | |
109 | /* Comfortable defines for amradio_set_mute */ | |
110 | #define AMRADIO_START 0x00 | |
111 | #define AMRADIO_STOP 0x01 | |
112 | ||
1bb16d71 AK |
113 | /* Comfortable defines for amradio_set_stereo */ |
114 | #define WANT_STEREO 0x00 | |
115 | #define WANT_MONO 0x01 | |
116 | ||
2aa72f3b AK |
117 | /* module parameter */ |
118 | static int radio_nr = -1; | |
119 | module_param(radio_nr, int, 0); | |
120 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); | |
121 | ||
2aa72f3b AK |
122 | static int usb_amradio_probe(struct usb_interface *intf, |
123 | const struct usb_device_id *id); | |
124 | static void usb_amradio_disconnect(struct usb_interface *intf); | |
bec43661 HV |
125 | static int usb_amradio_open(struct file *file); |
126 | static int usb_amradio_close(struct file *file); | |
2aa72f3b AK |
127 | static int usb_amradio_suspend(struct usb_interface *intf, |
128 | pm_message_t message); | |
129 | static int usb_amradio_resume(struct usb_interface *intf); | |
130 | ||
131 | /* Data for one (physical) device */ | |
132 | struct amradio_device { | |
133 | /* reference to USB and video device */ | |
134 | struct usb_device *usbdev; | |
d89ce0d9 | 135 | struct usb_interface *intf; |
7a7d92e0 | 136 | struct video_device videodev; |
b466248d | 137 | struct v4l2_device v4l2_dev; |
2aa72f3b AK |
138 | |
139 | unsigned char *buffer; | |
140 | struct mutex lock; /* buffer locking */ | |
141 | int curfreq; | |
142 | int stereo; | |
2aa72f3b | 143 | int muted; |
502d5016 | 144 | int initialized; |
2aa72f3b AK |
145 | }; |
146 | ||
ceb99e1b DE |
147 | #define vdev_to_amradio(r) container_of(r, struct amradio_device, videodev) |
148 | ||
2aa72f3b AK |
149 | /* USB Device ID List */ |
150 | static struct usb_device_id usb_amradio_device_table[] = { | |
151 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
152 | USB_CLASS_HID, 0, 0) }, | |
153 | { } /* Terminating entry */ | |
154 | }; | |
155 | ||
156 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
157 | ||
158 | /* USB subsystem interface */ | |
159 | static struct usb_driver usb_amradio_driver = { | |
e60b022e | 160 | .name = MR800_DRIVER_NAME, |
2aa72f3b AK |
161 | .probe = usb_amradio_probe, |
162 | .disconnect = usb_amradio_disconnect, | |
163 | .suspend = usb_amradio_suspend, | |
164 | .resume = usb_amradio_resume, | |
165 | .reset_resume = usb_amradio_resume, | |
166 | .id_table = usb_amradio_device_table, | |
d89ce0d9 | 167 | .supports_autosuspend = 1, |
2aa72f3b AK |
168 | }; |
169 | ||
db821804 AK |
170 | /* switch on/off the radio. Send 8 bytes to device */ |
171 | static int amradio_set_mute(struct amradio_device *radio, char argument) | |
2aa72f3b AK |
172 | { |
173 | int retval; | |
174 | int size; | |
175 | ||
4aebc289 | 176 | BUG_ON(!mutex_is_locked(&radio->lock)); |
2aa72f3b AK |
177 | |
178 | radio->buffer[0] = 0x00; | |
179 | radio->buffer[1] = 0x55; | |
180 | radio->buffer[2] = 0xaa; | |
181 | radio->buffer[3] = 0x00; | |
db821804 AK |
182 | radio->buffer[4] = AMRADIO_SET_MUTE; |
183 | radio->buffer[5] = argument; | |
2aa72f3b AK |
184 | radio->buffer[6] = 0x00; |
185 | radio->buffer[7] = 0x00; | |
186 | ||
187 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
188 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
189 | ||
e57458dc | 190 | if (retval < 0 || size != BUFFER_LENGTH) { |
16a72f41 | 191 | amradio_dev_warn(&radio->videodev.dev, "set mute failed\n"); |
2aa72f3b AK |
192 | return retval; |
193 | } | |
194 | ||
db821804 | 195 | radio->muted = argument; |
2aa72f3b AK |
196 | |
197 | return retval; | |
198 | } | |
199 | ||
200 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
201 | static int amradio_setfreq(struct amradio_device *radio, int freq) | |
202 | { | |
203 | int retval; | |
204 | int size; | |
f7c1a380 | 205 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
2aa72f3b | 206 | |
4aebc289 | 207 | BUG_ON(!mutex_is_locked(&radio->lock)); |
2aa72f3b AK |
208 | |
209 | radio->buffer[0] = 0x00; | |
210 | radio->buffer[1] = 0x55; | |
211 | radio->buffer[2] = 0xaa; | |
212 | radio->buffer[3] = 0x03; | |
f7c1a380 | 213 | radio->buffer[4] = AMRADIO_SET_FREQ; |
2aa72f3b AK |
214 | radio->buffer[5] = 0x00; |
215 | radio->buffer[6] = 0x00; | |
216 | radio->buffer[7] = 0x08; | |
217 | ||
218 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
219 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
220 | ||
4aebc289 | 221 | if (retval < 0 || size != BUFFER_LENGTH) |
16a72f41 | 222 | goto out_err; |
2aa72f3b AK |
223 | |
224 | /* frequency is calculated from freq_send and placed in first 2 bytes */ | |
225 | radio->buffer[0] = (freq_send >> 8) & 0xff; | |
226 | radio->buffer[1] = freq_send & 0xff; | |
227 | radio->buffer[2] = 0x01; | |
228 | radio->buffer[3] = 0x00; | |
229 | radio->buffer[4] = 0x00; | |
230 | /* 5 and 6 bytes of buffer already = 0x00 */ | |
231 | radio->buffer[7] = 0x00; | |
232 | ||
233 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
234 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
235 | ||
16a72f41 DE |
236 | if (retval < 0 || size != BUFFER_LENGTH) |
237 | goto out_err; | |
2aa72f3b | 238 | |
798166db | 239 | radio->curfreq = freq; |
16a72f41 | 240 | goto out; |
1bb16d71 | 241 | |
16a72f41 DE |
242 | out_err: |
243 | amradio_dev_warn(&radio->videodev.dev, "set frequency failed\n"); | |
244 | out: | |
1bb16d71 AK |
245 | return retval; |
246 | } | |
247 | ||
248 | static int amradio_set_stereo(struct amradio_device *radio, char argument) | |
249 | { | |
250 | int retval; | |
251 | int size; | |
252 | ||
4aebc289 | 253 | BUG_ON(!mutex_is_locked(&radio->lock)); |
1bb16d71 AK |
254 | |
255 | radio->buffer[0] = 0x00; | |
256 | radio->buffer[1] = 0x55; | |
257 | radio->buffer[2] = 0xaa; | |
258 | radio->buffer[3] = 0x00; | |
259 | radio->buffer[4] = AMRADIO_SET_MONO; | |
260 | radio->buffer[5] = argument; | |
261 | radio->buffer[6] = 0x00; | |
262 | radio->buffer[7] = 0x00; | |
263 | ||
264 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
265 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
266 | ||
267 | if (retval < 0 || size != BUFFER_LENGTH) { | |
16a72f41 | 268 | amradio_dev_warn(&radio->videodev.dev, "set stereo failed\n"); |
1bb16d71 AK |
269 | return retval; |
270 | } | |
271 | ||
30dd4508 DE |
272 | if (argument == WANT_STEREO) |
273 | radio->stereo = 1; | |
274 | else | |
275 | radio->stereo = 0; | |
7f03a585 | 276 | |
2aa72f3b AK |
277 | return retval; |
278 | } | |
279 | ||
71f07d94 AK |
280 | /* Handle unplugging the device. |
281 | * We call video_unregister_device in any case. | |
282 | * The last function called in this procedure is | |
283 | * usb_amradio_device_release. | |
284 | */ | |
2aa72f3b AK |
285 | static void usb_amradio_disconnect(struct usb_interface *intf) |
286 | { | |
287 | struct amradio_device *radio = usb_get_intfdata(intf); | |
288 | ||
f4e9043e | 289 | mutex_lock(&radio->lock); |
26452bfe | 290 | radio->usbdev = NULL; |
f4e9043e | 291 | mutex_unlock(&radio->lock); |
2aa72f3b | 292 | |
f4e9043e | 293 | usb_set_intfdata(intf, NULL); |
b466248d | 294 | v4l2_device_disconnect(&radio->v4l2_dev); |
4e361657 | 295 | video_unregister_device(&radio->videodev); |
2aa72f3b AK |
296 | } |
297 | ||
298 | /* vidioc_querycap - query device capabilities */ | |
299 | static int vidioc_querycap(struct file *file, void *priv, | |
300 | struct v4l2_capability *v) | |
301 | { | |
ceb99e1b | 302 | struct amradio_device *radio = file->private_data; |
c7181cfa | 303 | |
2aa72f3b AK |
304 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
305 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 306 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
2aa72f3b AK |
307 | v->version = RADIO_VERSION; |
308 | v->capabilities = V4L2_CAP_TUNER; | |
309 | return 0; | |
310 | } | |
311 | ||
312 | /* vidioc_g_tuner - get tuner attributes */ | |
313 | static int vidioc_g_tuner(struct file *file, void *priv, | |
314 | struct v4l2_tuner *v) | |
315 | { | |
ceb99e1b | 316 | struct amradio_device *radio = file->private_data; |
1bb16d71 | 317 | int retval; |
2aa72f3b AK |
318 | |
319 | if (v->index > 0) | |
320 | return -EINVAL; | |
321 | ||
322 | /* TODO: Add function which look is signal stereo or not | |
323 | * amradio_getstat(radio); | |
324 | */ | |
1bb16d71 AK |
325 | |
326 | /* we call amradio_set_stereo to set radio->stereo | |
327 | * Honestly, amradio_getstat should cover this in future and | |
328 | * amradio_set_stereo shouldn't be here | |
329 | */ | |
330 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 331 | |
2aa72f3b AK |
332 | strcpy(v->name, "FM"); |
333 | v->type = V4L2_TUNER_RADIO; | |
334 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
335 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
336 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
337 | v->capability = V4L2_TUNER_CAP_LOW; | |
338 | if (radio->stereo) | |
339 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
340 | else | |
341 | v->audmode = V4L2_TUNER_MODE_MONO; | |
342 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ | |
343 | v->afc = 0; /* Don't know what is this */ | |
4aebc289 | 344 | |
4aebc289 | 345 | return retval; |
2aa72f3b AK |
346 | } |
347 | ||
348 | /* vidioc_s_tuner - set tuner attributes */ | |
349 | static int vidioc_s_tuner(struct file *file, void *priv, | |
350 | struct v4l2_tuner *v) | |
351 | { | |
ceb99e1b | 352 | struct amradio_device *radio = file->private_data; |
eac000a9 | 353 | int retval = -EINVAL; |
3480130a | 354 | |
2aa72f3b AK |
355 | if (v->index > 0) |
356 | return -EINVAL; | |
1bb16d71 AK |
357 | |
358 | /* mono/stereo selector */ | |
359 | switch (v->audmode) { | |
360 | case V4L2_TUNER_MODE_MONO: | |
361 | retval = amradio_set_stereo(radio, WANT_MONO); | |
1bb16d71 AK |
362 | break; |
363 | case V4L2_TUNER_MODE_STEREO: | |
364 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 365 | break; |
1bb16d71 AK |
366 | } |
367 | ||
4aebc289 | 368 | return retval; |
2aa72f3b AK |
369 | } |
370 | ||
371 | /* vidioc_s_frequency - set tuner radio frequency */ | |
372 | static int vidioc_s_frequency(struct file *file, void *priv, | |
373 | struct v4l2_frequency *f) | |
374 | { | |
ceb99e1b | 375 | struct amradio_device *radio = file->private_data; |
2aa72f3b | 376 | |
a3a9e287 HV |
377 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
378 | return -EINVAL; | |
798166db | 379 | return amradio_setfreq(radio, f->frequency); |
2aa72f3b AK |
380 | } |
381 | ||
382 | /* vidioc_g_frequency - get tuner radio frequency */ | |
383 | static int vidioc_g_frequency(struct file *file, void *priv, | |
384 | struct v4l2_frequency *f) | |
385 | { | |
ceb99e1b | 386 | struct amradio_device *radio = file->private_data; |
3480130a | 387 | |
a3a9e287 HV |
388 | if (f->tuner != 0) |
389 | return -EINVAL; | |
2aa72f3b AK |
390 | f->type = V4L2_TUNER_RADIO; |
391 | f->frequency = radio->curfreq; | |
4aebc289 | 392 | |
2aa72f3b AK |
393 | return 0; |
394 | } | |
395 | ||
396 | /* vidioc_queryctrl - enumerate control items */ | |
397 | static int vidioc_queryctrl(struct file *file, void *priv, | |
398 | struct v4l2_queryctrl *qc) | |
399 | { | |
b466248d AK |
400 | switch (qc->id) { |
401 | case V4L2_CID_AUDIO_MUTE: | |
402 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
2aa72f3b | 403 | } |
b466248d | 404 | |
2aa72f3b AK |
405 | return -EINVAL; |
406 | } | |
407 | ||
408 | /* vidioc_g_ctrl - get the value of a control */ | |
409 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
410 | struct v4l2_control *ctrl) | |
411 | { | |
ceb99e1b | 412 | struct amradio_device *radio = file->private_data; |
3480130a | 413 | |
2aa72f3b AK |
414 | switch (ctrl->id) { |
415 | case V4L2_CID_AUDIO_MUTE: | |
416 | ctrl->value = radio->muted; | |
417 | return 0; | |
418 | } | |
4aebc289 | 419 | |
2aa72f3b AK |
420 | return -EINVAL; |
421 | } | |
422 | ||
423 | /* vidioc_s_ctrl - set the value of a control */ | |
424 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
425 | struct v4l2_control *ctrl) | |
426 | { | |
ceb99e1b | 427 | struct amradio_device *radio = file->private_data; |
4aebc289 | 428 | int retval = -EINVAL; |
3480130a | 429 | |
2aa72f3b AK |
430 | switch (ctrl->id) { |
431 | case V4L2_CID_AUDIO_MUTE: | |
16a72f41 | 432 | if (ctrl->value) |
db821804 | 433 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 434 | else |
db821804 | 435 | retval = amradio_set_mute(radio, AMRADIO_START); |
16a72f41 | 436 | |
4aebc289 | 437 | break; |
2aa72f3b | 438 | } |
4aebc289 | 439 | |
4aebc289 | 440 | return retval; |
2aa72f3b AK |
441 | } |
442 | ||
443 | /* vidioc_g_audio - get audio attributes */ | |
444 | static int vidioc_g_audio(struct file *file, void *priv, | |
445 | struct v4l2_audio *a) | |
446 | { | |
447 | if (a->index > 1) | |
448 | return -EINVAL; | |
449 | ||
450 | strcpy(a->name, "Radio"); | |
451 | a->capability = V4L2_AUDCAP_STEREO; | |
452 | return 0; | |
453 | } | |
454 | ||
455 | /* vidioc_s_audio - set audio attributes */ | |
456 | static int vidioc_s_audio(struct file *file, void *priv, | |
457 | struct v4l2_audio *a) | |
458 | { | |
459 | if (a->index != 0) | |
460 | return -EINVAL; | |
461 | return 0; | |
462 | } | |
463 | ||
464 | /* vidioc_g_input - get input */ | |
465 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
466 | { | |
467 | *i = 0; | |
468 | return 0; | |
469 | } | |
470 | ||
471 | /* vidioc_s_input - set input */ | |
472 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
473 | { | |
474 | if (i != 0) | |
475 | return -EINVAL; | |
476 | return 0; | |
477 | } | |
478 | ||
502d5016 | 479 | static int usb_amradio_init(struct amradio_device *radio) |
2aa72f3b | 480 | { |
a5d69475 | 481 | int retval; |
2aa72f3b | 482 | |
502d5016 | 483 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 484 | if (retval) |
502d5016 | 485 | goto out_err; |
0fabb783 | 486 | |
502d5016 | 487 | retval = amradio_set_stereo(radio, WANT_STEREO); |
16a72f41 | 488 | if (retval) |
502d5016 | 489 | goto out_err; |
2aa72f3b | 490 | |
502d5016 DE |
491 | radio->initialized = 1; |
492 | goto out; | |
493 | ||
494 | out_err: | |
495 | amradio_dev_err(&radio->videodev.dev, "initialization failed\n"); | |
496 | out: | |
497 | return retval; | |
498 | } | |
499 | ||
2aa72f3b | 500 | /* open device - amradio_start() and amradio_setfreq() */ |
bec43661 | 501 | static int usb_amradio_open(struct file *file) |
2aa72f3b | 502 | { |
ceb99e1b | 503 | struct amradio_device *radio = vdev_to_amradio(video_devdata(file)); |
4aebc289 | 504 | int retval = 0; |
2aa72f3b | 505 | |
4aebc289 DE |
506 | mutex_lock(&radio->lock); |
507 | ||
26452bfe | 508 | if (!radio->usbdev) { |
4aebc289 DE |
509 | retval = -EIO; |
510 | goto unlock; | |
2aa72f3b | 511 | } |
a5d69475 | 512 | |
ceb99e1b | 513 | file->private_data = radio; |
d89ce0d9 ON |
514 | retval = usb_autopm_get_interface(radio->intf); |
515 | if (retval) | |
516 | goto unlock; | |
1bb16d71 | 517 | |
d89ce0d9 | 518 | if (unlikely(!radio->initialized)) { |
502d5016 | 519 | retval = usb_amradio_init(radio); |
d89ce0d9 ON |
520 | if (retval) |
521 | usb_autopm_put_interface(radio->intf); | |
522 | } | |
0fabb783 | 523 | |
4aebc289 DE |
524 | unlock: |
525 | mutex_unlock(&radio->lock); | |
526 | return retval; | |
2aa72f3b AK |
527 | } |
528 | ||
f4e9043e | 529 | /*close device */ |
bec43661 | 530 | static int usb_amradio_close(struct file *file) |
2aa72f3b | 531 | { |
ceb99e1b | 532 | struct amradio_device *radio = file->private_data; |
4aebc289 | 533 | int retval = 0; |
3480130a | 534 | |
52433bbb | 535 | mutex_lock(&radio->lock); |
4aebc289 | 536 | |
8a7cd16f | 537 | if (!radio->usbdev) |
4aebc289 | 538 | retval = -EIO; |
d89ce0d9 ON |
539 | else |
540 | usb_autopm_put_interface(radio->intf); | |
3480130a | 541 | |
52433bbb | 542 | mutex_unlock(&radio->lock); |
4aebc289 | 543 | return retval; |
2aa72f3b | 544 | } |
3480130a | 545 | |
eac000a9 DE |
546 | static long usb_amradio_ioctl(struct file *file, unsigned int cmd, |
547 | unsigned long arg) | |
548 | { | |
549 | struct amradio_device *radio = file->private_data; | |
550 | long retval = 0; | |
551 | ||
552 | mutex_lock(&radio->lock); | |
553 | ||
26452bfe | 554 | if (!radio->usbdev) { |
eac000a9 DE |
555 | retval = -EIO; |
556 | goto unlock; | |
2aa72f3b | 557 | } |
3480130a | 558 | |
eac000a9 DE |
559 | retval = video_ioctl2(file, cmd, arg); |
560 | ||
561 | unlock: | |
562 | mutex_unlock(&radio->lock); | |
563 | return retval; | |
2aa72f3b AK |
564 | } |
565 | ||
566 | /* Suspend device - stop device. Need to be checked and fixed */ | |
567 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
568 | { | |
569 | struct amradio_device *radio = usb_get_intfdata(intf); | |
570 | ||
4aebc289 DE |
571 | mutex_lock(&radio->lock); |
572 | ||
d8970e5f | 573 | if (!radio->muted && radio->initialized) { |
16a72f41 | 574 | amradio_set_mute(radio, AMRADIO_STOP); |
d8970e5f DE |
575 | radio->muted = 0; |
576 | } | |
2aa72f3b | 577 | |
e60b022e | 578 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b | 579 | |
4aebc289 | 580 | mutex_unlock(&radio->lock); |
2aa72f3b AK |
581 | return 0; |
582 | } | |
583 | ||
584 | /* Resume device - start device. Need to be checked and fixed */ | |
585 | static int usb_amradio_resume(struct usb_interface *intf) | |
586 | { | |
587 | struct amradio_device *radio = usb_get_intfdata(intf); | |
588 | ||
4aebc289 DE |
589 | mutex_lock(&radio->lock); |
590 | ||
d8970e5f DE |
591 | if (unlikely(!radio->initialized)) |
592 | goto unlock; | |
593 | ||
594 | if (radio->stereo) | |
16a72f41 | 595 | amradio_set_stereo(radio, WANT_STEREO); |
d8970e5f | 596 | else |
16a72f41 | 597 | amradio_set_stereo(radio, WANT_MONO); |
d8970e5f | 598 | |
16a72f41 | 599 | amradio_setfreq(radio, radio->curfreq); |
2aa72f3b | 600 | |
16a72f41 DE |
601 | if (!radio->muted) |
602 | amradio_set_mute(radio, AMRADIO_START); | |
d8970e5f DE |
603 | |
604 | unlock: | |
e60b022e | 605 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b | 606 | |
4aebc289 | 607 | mutex_unlock(&radio->lock); |
2aa72f3b AK |
608 | return 0; |
609 | } | |
610 | ||
611 | /* File system interface */ | |
bec43661 | 612 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b AK |
613 | .owner = THIS_MODULE, |
614 | .open = usb_amradio_open, | |
615 | .release = usb_amradio_close, | |
eac000a9 | 616 | .ioctl = usb_amradio_ioctl, |
2aa72f3b AK |
617 | }; |
618 | ||
619 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
620 | .vidioc_querycap = vidioc_querycap, | |
621 | .vidioc_g_tuner = vidioc_g_tuner, | |
622 | .vidioc_s_tuner = vidioc_s_tuner, | |
623 | .vidioc_g_frequency = vidioc_g_frequency, | |
624 | .vidioc_s_frequency = vidioc_s_frequency, | |
625 | .vidioc_queryctrl = vidioc_queryctrl, | |
626 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
627 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
628 | .vidioc_g_audio = vidioc_g_audio, | |
629 | .vidioc_s_audio = vidioc_s_audio, | |
630 | .vidioc_g_input = vidioc_g_input, | |
631 | .vidioc_s_input = vidioc_s_input, | |
632 | }; | |
633 | ||
b466248d | 634 | static void usb_amradio_video_device_release(struct video_device *videodev) |
f4e9043e | 635 | { |
ceb99e1b | 636 | struct amradio_device *radio = vdev_to_amradio(videodev); |
f4e9043e | 637 | |
b466248d AK |
638 | v4l2_device_unregister(&radio->v4l2_dev); |
639 | ||
f4e9043e AK |
640 | /* free rest memory */ |
641 | kfree(radio->buffer); | |
642 | kfree(radio); | |
643 | } | |
644 | ||
a5d69475 | 645 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
646 | static int usb_amradio_probe(struct usb_interface *intf, |
647 | const struct usb_device_id *id) | |
648 | { | |
649 | struct amradio_device *radio; | |
1b8bbb3c | 650 | int retval = 0; |
2aa72f3b | 651 | |
b466248d | 652 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
2aa72f3b | 653 | |
8edafcc6 AK |
654 | if (!radio) { |
655 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
1b8bbb3c DE |
656 | retval = -ENOMEM; |
657 | goto err; | |
8edafcc6 | 658 | } |
2aa72f3b AK |
659 | |
660 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
661 | ||
8edafcc6 AK |
662 | if (!radio->buffer) { |
663 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
1b8bbb3c DE |
664 | retval = -ENOMEM; |
665 | goto err_nobuf; | |
2aa72f3b AK |
666 | } |
667 | ||
d1939e4c | 668 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
b466248d AK |
669 | if (retval < 0) { |
670 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); | |
1b8bbb3c | 671 | goto err_v4l2; |
b466248d AK |
672 | } |
673 | ||
d1939e4c | 674 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
7a7d92e0 | 675 | sizeof(radio->videodev.name)); |
d1939e4c | 676 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
7a7d92e0 DE |
677 | radio->videodev.fops = &usb_amradio_fops; |
678 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; | |
679 | radio->videodev.release = usb_amradio_video_device_release; | |
2aa72f3b | 680 | |
2aa72f3b | 681 | radio->usbdev = interface_to_usbdev(intf); |
d89ce0d9 | 682 | radio->intf = intf; |
2aa72f3b AK |
683 | radio->curfreq = 95.16 * FREQ_MUL; |
684 | ||
685 | mutex_init(&radio->lock); | |
686 | ||
7a7d92e0 | 687 | video_set_drvdata(&radio->videodev, radio); |
b466248d | 688 | |
7a7d92e0 DE |
689 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
690 | radio_nr); | |
a5d69475 | 691 | if (retval < 0) { |
65c51dc9 | 692 | dev_err(&intf->dev, "could not register video device\n"); |
1b8bbb3c | 693 | goto err_vdev; |
2aa72f3b AK |
694 | } |
695 | ||
696 | usb_set_intfdata(intf, radio); | |
697 | return 0; | |
1b8bbb3c DE |
698 | |
699 | err_vdev: | |
d1939e4c | 700 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
701 | err_v4l2: |
702 | kfree(radio->buffer); | |
703 | err_nobuf: | |
704 | kfree(radio); | |
705 | err: | |
706 | return retval; | |
2aa72f3b AK |
707 | } |
708 | ||
709 | static int __init amradio_init(void) | |
710 | { | |
711 | int retval = usb_register(&usb_amradio_driver); | |
712 | ||
e60b022e AK |
713 | pr_info(KBUILD_MODNAME |
714 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); | |
715 | ||
2aa72f3b | 716 | if (retval) |
e60b022e AK |
717 | pr_err(KBUILD_MODNAME |
718 | ": usb_register failed. Error number %d\n", retval); | |
719 | ||
2aa72f3b AK |
720 | return retval; |
721 | } | |
722 | ||
723 | static void __exit amradio_exit(void) | |
724 | { | |
725 | usb_deregister(&usb_amradio_driver); | |
726 | } | |
727 | ||
728 | module_init(amradio_init); | |
729 | module_exit(amradio_exit); | |
730 |