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 | ||
a2bdc5e6 HV |
147 | static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev) |
148 | { | |
149 | return container_of(v4l2_dev, struct amradio_device, v4l2_dev); | |
150 | } | |
ceb99e1b | 151 | |
2aa72f3b AK |
152 | /* USB Device ID List */ |
153 | static struct usb_device_id usb_amradio_device_table[] = { | |
154 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
155 | USB_CLASS_HID, 0, 0) }, | |
156 | { } /* Terminating entry */ | |
157 | }; | |
158 | ||
159 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
160 | ||
161 | /* USB subsystem interface */ | |
162 | static struct usb_driver usb_amradio_driver = { | |
e60b022e | 163 | .name = MR800_DRIVER_NAME, |
2aa72f3b AK |
164 | .probe = usb_amradio_probe, |
165 | .disconnect = usb_amradio_disconnect, | |
166 | .suspend = usb_amradio_suspend, | |
167 | .resume = usb_amradio_resume, | |
168 | .reset_resume = usb_amradio_resume, | |
169 | .id_table = usb_amradio_device_table, | |
d89ce0d9 | 170 | .supports_autosuspend = 1, |
2aa72f3b AK |
171 | }; |
172 | ||
db821804 AK |
173 | /* switch on/off the radio. Send 8 bytes to device */ |
174 | static int amradio_set_mute(struct amradio_device *radio, char argument) | |
2aa72f3b AK |
175 | { |
176 | int retval; | |
177 | int size; | |
178 | ||
2aa72f3b AK |
179 | radio->buffer[0] = 0x00; |
180 | radio->buffer[1] = 0x55; | |
181 | radio->buffer[2] = 0xaa; | |
182 | radio->buffer[3] = 0x00; | |
db821804 AK |
183 | radio->buffer[4] = AMRADIO_SET_MUTE; |
184 | radio->buffer[5] = argument; | |
2aa72f3b AK |
185 | radio->buffer[6] = 0x00; |
186 | radio->buffer[7] = 0x00; | |
187 | ||
188 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
189 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
190 | ||
e57458dc | 191 | if (retval < 0 || size != BUFFER_LENGTH) { |
16a72f41 | 192 | amradio_dev_warn(&radio->videodev.dev, "set mute failed\n"); |
2aa72f3b AK |
193 | return retval; |
194 | } | |
195 | ||
db821804 | 196 | radio->muted = argument; |
2aa72f3b AK |
197 | |
198 | return retval; | |
199 | } | |
200 | ||
201 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
202 | static int amradio_setfreq(struct amradio_device *radio, int freq) | |
203 | { | |
204 | int retval; | |
205 | int size; | |
f7c1a380 | 206 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
2aa72f3b | 207 | |
2aa72f3b AK |
208 | radio->buffer[0] = 0x00; |
209 | radio->buffer[1] = 0x55; | |
210 | radio->buffer[2] = 0xaa; | |
211 | radio->buffer[3] = 0x03; | |
f7c1a380 | 212 | radio->buffer[4] = AMRADIO_SET_FREQ; |
2aa72f3b AK |
213 | radio->buffer[5] = 0x00; |
214 | radio->buffer[6] = 0x00; | |
215 | radio->buffer[7] = 0x08; | |
216 | ||
217 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
218 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
219 | ||
4aebc289 | 220 | if (retval < 0 || size != BUFFER_LENGTH) |
16a72f41 | 221 | goto out_err; |
2aa72f3b AK |
222 | |
223 | /* frequency is calculated from freq_send and placed in first 2 bytes */ | |
224 | radio->buffer[0] = (freq_send >> 8) & 0xff; | |
225 | radio->buffer[1] = freq_send & 0xff; | |
226 | radio->buffer[2] = 0x01; | |
227 | radio->buffer[3] = 0x00; | |
228 | radio->buffer[4] = 0x00; | |
229 | /* 5 and 6 bytes of buffer already = 0x00 */ | |
230 | radio->buffer[7] = 0x00; | |
231 | ||
232 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
233 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
234 | ||
16a72f41 DE |
235 | if (retval < 0 || size != BUFFER_LENGTH) |
236 | goto out_err; | |
2aa72f3b | 237 | |
798166db | 238 | radio->curfreq = freq; |
16a72f41 | 239 | goto out; |
1bb16d71 | 240 | |
16a72f41 DE |
241 | out_err: |
242 | amradio_dev_warn(&radio->videodev.dev, "set frequency failed\n"); | |
243 | out: | |
1bb16d71 AK |
244 | return retval; |
245 | } | |
246 | ||
247 | static int amradio_set_stereo(struct amradio_device *radio, char argument) | |
248 | { | |
249 | int retval; | |
250 | int size; | |
251 | ||
1bb16d71 AK |
252 | radio->buffer[0] = 0x00; |
253 | radio->buffer[1] = 0x55; | |
254 | radio->buffer[2] = 0xaa; | |
255 | radio->buffer[3] = 0x00; | |
256 | radio->buffer[4] = AMRADIO_SET_MONO; | |
257 | radio->buffer[5] = argument; | |
258 | radio->buffer[6] = 0x00; | |
259 | radio->buffer[7] = 0x00; | |
260 | ||
261 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
262 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
263 | ||
264 | if (retval < 0 || size != BUFFER_LENGTH) { | |
16a72f41 | 265 | amradio_dev_warn(&radio->videodev.dev, "set stereo failed\n"); |
1bb16d71 AK |
266 | return retval; |
267 | } | |
268 | ||
30dd4508 DE |
269 | if (argument == WANT_STEREO) |
270 | radio->stereo = 1; | |
271 | else | |
272 | radio->stereo = 0; | |
7f03a585 | 273 | |
2aa72f3b AK |
274 | return retval; |
275 | } | |
276 | ||
71f07d94 AK |
277 | /* Handle unplugging the device. |
278 | * We call video_unregister_device in any case. | |
279 | * The last function called in this procedure is | |
280 | * usb_amradio_device_release. | |
281 | */ | |
2aa72f3b AK |
282 | static void usb_amradio_disconnect(struct usb_interface *intf) |
283 | { | |
a2bdc5e6 | 284 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 285 | |
f4e9043e | 286 | mutex_lock(&radio->lock); |
b466248d | 287 | v4l2_device_disconnect(&radio->v4l2_dev); |
361ae54f | 288 | mutex_unlock(&radio->lock); |
9c84d89b | 289 | video_unregister_device(&radio->videodev); |
2aa72f3b AK |
290 | } |
291 | ||
292 | /* vidioc_querycap - query device capabilities */ | |
293 | static int vidioc_querycap(struct file *file, void *priv, | |
294 | struct v4l2_capability *v) | |
295 | { | |
ceb99e1b | 296 | struct amradio_device *radio = file->private_data; |
c7181cfa | 297 | |
2aa72f3b AK |
298 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
299 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 300 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
2aa72f3b AK |
301 | v->version = RADIO_VERSION; |
302 | v->capabilities = V4L2_CAP_TUNER; | |
303 | return 0; | |
304 | } | |
305 | ||
306 | /* vidioc_g_tuner - get tuner attributes */ | |
307 | static int vidioc_g_tuner(struct file *file, void *priv, | |
308 | struct v4l2_tuner *v) | |
309 | { | |
ceb99e1b | 310 | struct amradio_device *radio = file->private_data; |
1bb16d71 | 311 | int retval; |
2aa72f3b AK |
312 | |
313 | if (v->index > 0) | |
314 | return -EINVAL; | |
315 | ||
316 | /* TODO: Add function which look is signal stereo or not | |
317 | * amradio_getstat(radio); | |
318 | */ | |
1bb16d71 AK |
319 | |
320 | /* we call amradio_set_stereo to set radio->stereo | |
321 | * Honestly, amradio_getstat should cover this in future and | |
322 | * amradio_set_stereo shouldn't be here | |
323 | */ | |
324 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 325 | |
2aa72f3b AK |
326 | strcpy(v->name, "FM"); |
327 | v->type = V4L2_TUNER_RADIO; | |
328 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
329 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
330 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
331 | v->capability = V4L2_TUNER_CAP_LOW; | |
332 | if (radio->stereo) | |
333 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
334 | else | |
335 | v->audmode = V4L2_TUNER_MODE_MONO; | |
336 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ | |
337 | v->afc = 0; /* Don't know what is this */ | |
4aebc289 | 338 | |
4aebc289 | 339 | return retval; |
2aa72f3b AK |
340 | } |
341 | ||
342 | /* vidioc_s_tuner - set tuner attributes */ | |
343 | static int vidioc_s_tuner(struct file *file, void *priv, | |
344 | struct v4l2_tuner *v) | |
345 | { | |
ceb99e1b | 346 | struct amradio_device *radio = file->private_data; |
eac000a9 | 347 | int retval = -EINVAL; |
3480130a | 348 | |
2aa72f3b AK |
349 | if (v->index > 0) |
350 | return -EINVAL; | |
1bb16d71 AK |
351 | |
352 | /* mono/stereo selector */ | |
353 | switch (v->audmode) { | |
354 | case V4L2_TUNER_MODE_MONO: | |
355 | retval = amradio_set_stereo(radio, WANT_MONO); | |
1bb16d71 AK |
356 | break; |
357 | case V4L2_TUNER_MODE_STEREO: | |
358 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 359 | break; |
1bb16d71 AK |
360 | } |
361 | ||
4aebc289 | 362 | return retval; |
2aa72f3b AK |
363 | } |
364 | ||
365 | /* vidioc_s_frequency - set tuner radio frequency */ | |
366 | static int vidioc_s_frequency(struct file *file, void *priv, | |
367 | struct v4l2_frequency *f) | |
368 | { | |
ceb99e1b | 369 | struct amradio_device *radio = file->private_data; |
2aa72f3b | 370 | |
a3a9e287 HV |
371 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
372 | return -EINVAL; | |
798166db | 373 | return amradio_setfreq(radio, f->frequency); |
2aa72f3b AK |
374 | } |
375 | ||
376 | /* vidioc_g_frequency - get tuner radio frequency */ | |
377 | static int vidioc_g_frequency(struct file *file, void *priv, | |
378 | struct v4l2_frequency *f) | |
379 | { | |
ceb99e1b | 380 | struct amradio_device *radio = file->private_data; |
3480130a | 381 | |
a3a9e287 HV |
382 | if (f->tuner != 0) |
383 | return -EINVAL; | |
2aa72f3b AK |
384 | f->type = V4L2_TUNER_RADIO; |
385 | f->frequency = radio->curfreq; | |
4aebc289 | 386 | |
2aa72f3b AK |
387 | return 0; |
388 | } | |
389 | ||
390 | /* vidioc_queryctrl - enumerate control items */ | |
391 | static int vidioc_queryctrl(struct file *file, void *priv, | |
392 | struct v4l2_queryctrl *qc) | |
393 | { | |
b466248d AK |
394 | switch (qc->id) { |
395 | case V4L2_CID_AUDIO_MUTE: | |
396 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
2aa72f3b | 397 | } |
b466248d | 398 | |
2aa72f3b AK |
399 | return -EINVAL; |
400 | } | |
401 | ||
402 | /* vidioc_g_ctrl - get the value of a control */ | |
403 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
404 | struct v4l2_control *ctrl) | |
405 | { | |
ceb99e1b | 406 | struct amradio_device *radio = file->private_data; |
3480130a | 407 | |
2aa72f3b AK |
408 | switch (ctrl->id) { |
409 | case V4L2_CID_AUDIO_MUTE: | |
410 | ctrl->value = radio->muted; | |
411 | return 0; | |
412 | } | |
4aebc289 | 413 | |
2aa72f3b AK |
414 | return -EINVAL; |
415 | } | |
416 | ||
417 | /* vidioc_s_ctrl - set the value of a control */ | |
418 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
419 | struct v4l2_control *ctrl) | |
420 | { | |
ceb99e1b | 421 | struct amradio_device *radio = file->private_data; |
4aebc289 | 422 | int retval = -EINVAL; |
3480130a | 423 | |
2aa72f3b AK |
424 | switch (ctrl->id) { |
425 | case V4L2_CID_AUDIO_MUTE: | |
16a72f41 | 426 | if (ctrl->value) |
db821804 | 427 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 428 | else |
db821804 | 429 | retval = amradio_set_mute(radio, AMRADIO_START); |
16a72f41 | 430 | |
4aebc289 | 431 | break; |
2aa72f3b | 432 | } |
4aebc289 | 433 | |
4aebc289 | 434 | return retval; |
2aa72f3b AK |
435 | } |
436 | ||
437 | /* vidioc_g_audio - get audio attributes */ | |
438 | static int vidioc_g_audio(struct file *file, void *priv, | |
439 | struct v4l2_audio *a) | |
440 | { | |
441 | if (a->index > 1) | |
442 | return -EINVAL; | |
443 | ||
444 | strcpy(a->name, "Radio"); | |
445 | a->capability = V4L2_AUDCAP_STEREO; | |
446 | return 0; | |
447 | } | |
448 | ||
449 | /* vidioc_s_audio - set audio attributes */ | |
450 | static int vidioc_s_audio(struct file *file, void *priv, | |
451 | struct v4l2_audio *a) | |
452 | { | |
453 | if (a->index != 0) | |
454 | return -EINVAL; | |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* vidioc_g_input - get input */ | |
459 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
460 | { | |
461 | *i = 0; | |
462 | return 0; | |
463 | } | |
464 | ||
465 | /* vidioc_s_input - set input */ | |
466 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
467 | { | |
468 | if (i != 0) | |
469 | return -EINVAL; | |
470 | return 0; | |
471 | } | |
472 | ||
502d5016 | 473 | static int usb_amradio_init(struct amradio_device *radio) |
2aa72f3b | 474 | { |
a5d69475 | 475 | int retval; |
2aa72f3b | 476 | |
502d5016 | 477 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 478 | if (retval) |
502d5016 | 479 | goto out_err; |
0fabb783 | 480 | |
502d5016 | 481 | retval = amradio_set_stereo(radio, WANT_STEREO); |
16a72f41 | 482 | if (retval) |
502d5016 | 483 | goto out_err; |
2aa72f3b | 484 | |
502d5016 DE |
485 | radio->initialized = 1; |
486 | goto out; | |
487 | ||
488 | out_err: | |
489 | amradio_dev_err(&radio->videodev.dev, "initialization failed\n"); | |
490 | out: | |
491 | return retval; | |
492 | } | |
493 | ||
2aa72f3b | 494 | /* open device - amradio_start() and amradio_setfreq() */ |
bec43661 | 495 | static int usb_amradio_open(struct file *file) |
2aa72f3b | 496 | { |
a2bdc5e6 | 497 | struct amradio_device *radio = video_drvdata(file); |
361ae54f | 498 | int retval; |
a5d69475 | 499 | |
ceb99e1b | 500 | file->private_data = radio; |
d89ce0d9 ON |
501 | retval = usb_autopm_get_interface(radio->intf); |
502 | if (retval) | |
361ae54f | 503 | return retval; |
1bb16d71 | 504 | |
d89ce0d9 | 505 | if (unlikely(!radio->initialized)) { |
502d5016 | 506 | retval = usb_amradio_init(radio); |
d89ce0d9 ON |
507 | if (retval) |
508 | usb_autopm_put_interface(radio->intf); | |
509 | } | |
4aebc289 | 510 | return retval; |
2aa72f3b AK |
511 | } |
512 | ||
f4e9043e | 513 | /*close device */ |
bec43661 | 514 | static int usb_amradio_close(struct file *file) |
2aa72f3b | 515 | { |
ceb99e1b | 516 | struct amradio_device *radio = file->private_data; |
eac000a9 | 517 | |
361ae54f HV |
518 | usb_autopm_put_interface(radio->intf); |
519 | return 0; | |
2aa72f3b AK |
520 | } |
521 | ||
522 | /* Suspend device - stop device. Need to be checked and fixed */ | |
523 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
524 | { | |
a2bdc5e6 | 525 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 526 | |
d8970e5f | 527 | if (!radio->muted && radio->initialized) { |
16a72f41 | 528 | amradio_set_mute(radio, AMRADIO_STOP); |
d8970e5f DE |
529 | radio->muted = 0; |
530 | } | |
2aa72f3b | 531 | |
e60b022e | 532 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b AK |
533 | return 0; |
534 | } | |
535 | ||
536 | /* Resume device - start device. Need to be checked and fixed */ | |
537 | static int usb_amradio_resume(struct usb_interface *intf) | |
538 | { | |
a2bdc5e6 | 539 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 540 | |
d8970e5f | 541 | if (unlikely(!radio->initialized)) |
361ae54f | 542 | return 0; |
d8970e5f DE |
543 | |
544 | if (radio->stereo) | |
16a72f41 | 545 | amradio_set_stereo(radio, WANT_STEREO); |
d8970e5f | 546 | else |
16a72f41 | 547 | amradio_set_stereo(radio, WANT_MONO); |
d8970e5f | 548 | |
16a72f41 | 549 | amradio_setfreq(radio, radio->curfreq); |
2aa72f3b | 550 | |
16a72f41 DE |
551 | if (!radio->muted) |
552 | amradio_set_mute(radio, AMRADIO_START); | |
d8970e5f | 553 | |
e60b022e | 554 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b AK |
555 | return 0; |
556 | } | |
557 | ||
558 | /* File system interface */ | |
bec43661 | 559 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b AK |
560 | .owner = THIS_MODULE, |
561 | .open = usb_amradio_open, | |
562 | .release = usb_amradio_close, | |
361ae54f | 563 | .unlocked_ioctl = video_ioctl2, |
2aa72f3b AK |
564 | }; |
565 | ||
566 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
567 | .vidioc_querycap = vidioc_querycap, | |
568 | .vidioc_g_tuner = vidioc_g_tuner, | |
569 | .vidioc_s_tuner = vidioc_s_tuner, | |
570 | .vidioc_g_frequency = vidioc_g_frequency, | |
571 | .vidioc_s_frequency = vidioc_s_frequency, | |
572 | .vidioc_queryctrl = vidioc_queryctrl, | |
573 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
574 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
575 | .vidioc_g_audio = vidioc_g_audio, | |
576 | .vidioc_s_audio = vidioc_s_audio, | |
577 | .vidioc_g_input = vidioc_g_input, | |
578 | .vidioc_s_input = vidioc_s_input, | |
579 | }; | |
580 | ||
b466248d | 581 | static void usb_amradio_video_device_release(struct video_device *videodev) |
f4e9043e | 582 | { |
a2bdc5e6 | 583 | struct amradio_device *radio = video_get_drvdata(videodev); |
b466248d | 584 | |
f4e9043e AK |
585 | /* free rest memory */ |
586 | kfree(radio->buffer); | |
587 | kfree(radio); | |
588 | } | |
589 | ||
a5d69475 | 590 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
591 | static int usb_amradio_probe(struct usb_interface *intf, |
592 | const struct usb_device_id *id) | |
593 | { | |
594 | struct amradio_device *radio; | |
1b8bbb3c | 595 | int retval = 0; |
2aa72f3b | 596 | |
b466248d | 597 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
2aa72f3b | 598 | |
8edafcc6 AK |
599 | if (!radio) { |
600 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
1b8bbb3c DE |
601 | retval = -ENOMEM; |
602 | goto err; | |
8edafcc6 | 603 | } |
2aa72f3b AK |
604 | |
605 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
606 | ||
8edafcc6 AK |
607 | if (!radio->buffer) { |
608 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
1b8bbb3c DE |
609 | retval = -ENOMEM; |
610 | goto err_nobuf; | |
2aa72f3b AK |
611 | } |
612 | ||
d1939e4c | 613 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
b466248d AK |
614 | if (retval < 0) { |
615 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); | |
1b8bbb3c | 616 | goto err_v4l2; |
b466248d AK |
617 | } |
618 | ||
361ae54f HV |
619 | mutex_init(&radio->lock); |
620 | ||
d1939e4c | 621 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
7a7d92e0 | 622 | sizeof(radio->videodev.name)); |
d1939e4c | 623 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
7a7d92e0 DE |
624 | radio->videodev.fops = &usb_amradio_fops; |
625 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; | |
626 | radio->videodev.release = usb_amradio_video_device_release; | |
361ae54f | 627 | radio->videodev.lock = &radio->lock; |
2aa72f3b | 628 | |
2aa72f3b | 629 | radio->usbdev = interface_to_usbdev(intf); |
d89ce0d9 | 630 | radio->intf = intf; |
2aa72f3b AK |
631 | radio->curfreq = 95.16 * FREQ_MUL; |
632 | ||
7a7d92e0 | 633 | video_set_drvdata(&radio->videodev, radio); |
b466248d | 634 | |
7a7d92e0 DE |
635 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
636 | radio_nr); | |
a5d69475 | 637 | if (retval < 0) { |
65c51dc9 | 638 | dev_err(&intf->dev, "could not register video device\n"); |
1b8bbb3c | 639 | goto err_vdev; |
2aa72f3b AK |
640 | } |
641 | ||
2aa72f3b | 642 | return 0; |
1b8bbb3c DE |
643 | |
644 | err_vdev: | |
d1939e4c | 645 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
646 | err_v4l2: |
647 | kfree(radio->buffer); | |
648 | err_nobuf: | |
649 | kfree(radio); | |
650 | err: | |
651 | return retval; | |
2aa72f3b AK |
652 | } |
653 | ||
654 | static int __init amradio_init(void) | |
655 | { | |
656 | int retval = usb_register(&usb_amradio_driver); | |
657 | ||
e60b022e AK |
658 | pr_info(KBUILD_MODNAME |
659 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); | |
660 | ||
2aa72f3b | 661 | if (retval) |
e60b022e AK |
662 | pr_err(KBUILD_MODNAME |
663 | ": usb_register failed. Error number %d\n", retval); | |
664 | ||
2aa72f3b AK |
665 | return retval; |
666 | } | |
667 | ||
668 | static void __exit amradio_exit(void) | |
669 | { | |
670 | usb_deregister(&usb_amradio_driver); | |
671 | } | |
672 | ||
673 | module_init(amradio_init); | |
674 | module_exit(amradio_exit); | |
675 |