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> | |
61 | #include <linux/input.h> | |
62 | #include <linux/videodev2.h> | |
b466248d | 63 | #include <media/v4l2-device.h> |
2aa72f3b AK |
64 | #include <media/v4l2-ioctl.h> |
65 | #include <linux/usb.h> | |
66 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ | |
24c44d85 | 67 | #include <linux/mutex.h> |
2aa72f3b AK |
68 | |
69 | /* driver and module definitions */ | |
70 | #define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" | |
71 | #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver" | |
b466248d AK |
72 | #define DRIVER_VERSION "0.11" |
73 | #define RADIO_VERSION KERNEL_VERSION(0, 1, 1) | |
2aa72f3b AK |
74 | |
75 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
76 | MODULE_DESCRIPTION(DRIVER_DESC); | |
77 | MODULE_LICENSE("GPL"); | |
78 | ||
79 | #define USB_AMRADIO_VENDOR 0x07ca | |
80 | #define USB_AMRADIO_PRODUCT 0xb800 | |
81 | ||
e60b022e AK |
82 | /* dev_warn macro with driver name */ |
83 | #define MR800_DRIVER_NAME "radio-mr800" | |
84 | #define amradio_dev_warn(dev, fmt, arg...) \ | |
85 | dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
86 | ||
502d5016 DE |
87 | #define amradio_dev_err(dev, fmt, arg...) \ |
88 | dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
89 | ||
2aa72f3b AK |
90 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
91 | #define BUFFER_LENGTH 8 | |
92 | #define USB_TIMEOUT 500 | |
93 | ||
94 | /* Frequency limits in MHz -- these are European values. For Japanese | |
95 | devices, that would be 76 and 91. */ | |
96 | #define FREQ_MIN 87.5 | |
97 | #define FREQ_MAX 108.0 | |
98 | #define FREQ_MUL 16000 | |
99 | ||
db821804 AK |
100 | /* |
101 | * Commands that device should understand | |
102 | * List isnt full and will be updated with implementation of new functions | |
103 | */ | |
f7c1a380 | 104 | #define AMRADIO_SET_FREQ 0xa4 |
db821804 | 105 | #define AMRADIO_SET_MUTE 0xab |
1bb16d71 | 106 | #define AMRADIO_SET_MONO 0xae |
db821804 AK |
107 | |
108 | /* Comfortable defines for amradio_set_mute */ | |
109 | #define AMRADIO_START 0x00 | |
110 | #define AMRADIO_STOP 0x01 | |
111 | ||
1bb16d71 AK |
112 | /* Comfortable defines for amradio_set_stereo */ |
113 | #define WANT_STEREO 0x00 | |
114 | #define WANT_MONO 0x01 | |
115 | ||
2aa72f3b AK |
116 | /* module parameter */ |
117 | static int radio_nr = -1; | |
118 | module_param(radio_nr, int, 0); | |
119 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); | |
120 | ||
2aa72f3b AK |
121 | static int usb_amradio_probe(struct usb_interface *intf, |
122 | const struct usb_device_id *id); | |
123 | static void usb_amradio_disconnect(struct usb_interface *intf); | |
bec43661 HV |
124 | static int usb_amradio_open(struct file *file); |
125 | static int usb_amradio_close(struct file *file); | |
2aa72f3b AK |
126 | static int usb_amradio_suspend(struct usb_interface *intf, |
127 | pm_message_t message); | |
128 | static int usb_amradio_resume(struct usb_interface *intf); | |
129 | ||
130 | /* Data for one (physical) device */ | |
131 | struct amradio_device { | |
132 | /* reference to USB and video device */ | |
133 | struct usb_device *usbdev; | |
d89ce0d9 | 134 | struct usb_interface *intf; |
7a7d92e0 | 135 | struct video_device videodev; |
b466248d | 136 | struct v4l2_device v4l2_dev; |
2aa72f3b AK |
137 | |
138 | unsigned char *buffer; | |
139 | struct mutex lock; /* buffer locking */ | |
140 | int curfreq; | |
141 | int stereo; | |
2aa72f3b | 142 | int muted; |
502d5016 | 143 | int initialized; |
2aa72f3b AK |
144 | }; |
145 | ||
a2bdc5e6 HV |
146 | static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev) |
147 | { | |
148 | return container_of(v4l2_dev, struct amradio_device, v4l2_dev); | |
149 | } | |
ceb99e1b | 150 | |
2aa72f3b AK |
151 | /* USB Device ID List */ |
152 | static struct usb_device_id usb_amradio_device_table[] = { | |
153 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
154 | USB_CLASS_HID, 0, 0) }, | |
155 | { } /* Terminating entry */ | |
156 | }; | |
157 | ||
158 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
159 | ||
160 | /* USB subsystem interface */ | |
161 | static struct usb_driver usb_amradio_driver = { | |
e60b022e | 162 | .name = MR800_DRIVER_NAME, |
2aa72f3b AK |
163 | .probe = usb_amradio_probe, |
164 | .disconnect = usb_amradio_disconnect, | |
165 | .suspend = usb_amradio_suspend, | |
166 | .resume = usb_amradio_resume, | |
167 | .reset_resume = usb_amradio_resume, | |
168 | .id_table = usb_amradio_device_table, | |
d89ce0d9 | 169 | .supports_autosuspend = 1, |
2aa72f3b AK |
170 | }; |
171 | ||
db821804 AK |
172 | /* switch on/off the radio. Send 8 bytes to device */ |
173 | static int amradio_set_mute(struct amradio_device *radio, char argument) | |
2aa72f3b AK |
174 | { |
175 | int retval; | |
176 | int size; | |
177 | ||
2aa72f3b AK |
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 | |
2aa72f3b AK |
207 | radio->buffer[0] = 0x00; |
208 | radio->buffer[1] = 0x55; | |
209 | radio->buffer[2] = 0xaa; | |
210 | radio->buffer[3] = 0x03; | |
f7c1a380 | 211 | radio->buffer[4] = AMRADIO_SET_FREQ; |
2aa72f3b AK |
212 | radio->buffer[5] = 0x00; |
213 | radio->buffer[6] = 0x00; | |
214 | radio->buffer[7] = 0x08; | |
215 | ||
216 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
217 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
218 | ||
4aebc289 | 219 | if (retval < 0 || size != BUFFER_LENGTH) |
16a72f41 | 220 | goto out_err; |
2aa72f3b AK |
221 | |
222 | /* frequency is calculated from freq_send and placed in first 2 bytes */ | |
223 | radio->buffer[0] = (freq_send >> 8) & 0xff; | |
224 | radio->buffer[1] = freq_send & 0xff; | |
225 | radio->buffer[2] = 0x01; | |
226 | radio->buffer[3] = 0x00; | |
227 | radio->buffer[4] = 0x00; | |
228 | /* 5 and 6 bytes of buffer already = 0x00 */ | |
229 | radio->buffer[7] = 0x00; | |
230 | ||
231 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
232 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
233 | ||
16a72f41 DE |
234 | if (retval < 0 || size != BUFFER_LENGTH) |
235 | goto out_err; | |
2aa72f3b | 236 | |
798166db | 237 | radio->curfreq = freq; |
16a72f41 | 238 | goto out; |
1bb16d71 | 239 | |
16a72f41 DE |
240 | out_err: |
241 | amradio_dev_warn(&radio->videodev.dev, "set frequency failed\n"); | |
242 | out: | |
1bb16d71 AK |
243 | return retval; |
244 | } | |
245 | ||
246 | static int amradio_set_stereo(struct amradio_device *radio, char argument) | |
247 | { | |
248 | int retval; | |
249 | int size; | |
250 | ||
1bb16d71 AK |
251 | radio->buffer[0] = 0x00; |
252 | radio->buffer[1] = 0x55; | |
253 | radio->buffer[2] = 0xaa; | |
254 | radio->buffer[3] = 0x00; | |
255 | radio->buffer[4] = AMRADIO_SET_MONO; | |
256 | radio->buffer[5] = argument; | |
257 | radio->buffer[6] = 0x00; | |
258 | radio->buffer[7] = 0x00; | |
259 | ||
260 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
261 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
262 | ||
263 | if (retval < 0 || size != BUFFER_LENGTH) { | |
16a72f41 | 264 | amradio_dev_warn(&radio->videodev.dev, "set stereo failed\n"); |
1bb16d71 AK |
265 | return retval; |
266 | } | |
267 | ||
30dd4508 DE |
268 | if (argument == WANT_STEREO) |
269 | radio->stereo = 1; | |
270 | else | |
271 | radio->stereo = 0; | |
7f03a585 | 272 | |
2aa72f3b AK |
273 | return retval; |
274 | } | |
275 | ||
71f07d94 AK |
276 | /* Handle unplugging the device. |
277 | * We call video_unregister_device in any case. | |
278 | * The last function called in this procedure is | |
279 | * usb_amradio_device_release. | |
280 | */ | |
2aa72f3b AK |
281 | static void usb_amradio_disconnect(struct usb_interface *intf) |
282 | { | |
a2bdc5e6 | 283 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 284 | |
f4e9043e | 285 | mutex_lock(&radio->lock); |
a682d4cb HV |
286 | /* increase the device node's refcount */ |
287 | get_device(&radio->videodev.dev); | |
b466248d | 288 | v4l2_device_disconnect(&radio->v4l2_dev); |
9c84d89b | 289 | video_unregister_device(&radio->videodev); |
a682d4cb HV |
290 | mutex_unlock(&radio->lock); |
291 | /* decrease the device node's refcount, allowing it to be released */ | |
292 | put_device(&radio->videodev.dev); | |
2aa72f3b AK |
293 | } |
294 | ||
295 | /* vidioc_querycap - query device capabilities */ | |
296 | static int vidioc_querycap(struct file *file, void *priv, | |
297 | struct v4l2_capability *v) | |
298 | { | |
ceb99e1b | 299 | struct amradio_device *radio = file->private_data; |
c7181cfa | 300 | |
2aa72f3b AK |
301 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
302 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 303 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
2aa72f3b AK |
304 | v->version = RADIO_VERSION; |
305 | v->capabilities = V4L2_CAP_TUNER; | |
306 | return 0; | |
307 | } | |
308 | ||
309 | /* vidioc_g_tuner - get tuner attributes */ | |
310 | static int vidioc_g_tuner(struct file *file, void *priv, | |
311 | struct v4l2_tuner *v) | |
312 | { | |
ceb99e1b | 313 | struct amradio_device *radio = file->private_data; |
1bb16d71 | 314 | int retval; |
2aa72f3b AK |
315 | |
316 | if (v->index > 0) | |
317 | return -EINVAL; | |
318 | ||
319 | /* TODO: Add function which look is signal stereo or not | |
320 | * amradio_getstat(radio); | |
321 | */ | |
1bb16d71 AK |
322 | |
323 | /* we call amradio_set_stereo to set radio->stereo | |
324 | * Honestly, amradio_getstat should cover this in future and | |
325 | * amradio_set_stereo shouldn't be here | |
326 | */ | |
327 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 328 | |
2aa72f3b AK |
329 | strcpy(v->name, "FM"); |
330 | v->type = V4L2_TUNER_RADIO; | |
331 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
332 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
333 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
334 | v->capability = V4L2_TUNER_CAP_LOW; | |
335 | if (radio->stereo) | |
336 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
337 | else | |
338 | v->audmode = V4L2_TUNER_MODE_MONO; | |
339 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ | |
340 | v->afc = 0; /* Don't know what is this */ | |
4aebc289 | 341 | |
4aebc289 | 342 | return retval; |
2aa72f3b AK |
343 | } |
344 | ||
345 | /* vidioc_s_tuner - set tuner attributes */ | |
346 | static int vidioc_s_tuner(struct file *file, void *priv, | |
347 | struct v4l2_tuner *v) | |
348 | { | |
ceb99e1b | 349 | struct amradio_device *radio = file->private_data; |
eac000a9 | 350 | int retval = -EINVAL; |
3480130a | 351 | |
2aa72f3b AK |
352 | if (v->index > 0) |
353 | return -EINVAL; | |
1bb16d71 AK |
354 | |
355 | /* mono/stereo selector */ | |
356 | switch (v->audmode) { | |
357 | case V4L2_TUNER_MODE_MONO: | |
358 | retval = amradio_set_stereo(radio, WANT_MONO); | |
1bb16d71 AK |
359 | break; |
360 | case V4L2_TUNER_MODE_STEREO: | |
361 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 362 | break; |
1bb16d71 AK |
363 | } |
364 | ||
4aebc289 | 365 | return retval; |
2aa72f3b AK |
366 | } |
367 | ||
368 | /* vidioc_s_frequency - set tuner radio frequency */ | |
369 | static int vidioc_s_frequency(struct file *file, void *priv, | |
370 | struct v4l2_frequency *f) | |
371 | { | |
ceb99e1b | 372 | struct amradio_device *radio = file->private_data; |
2aa72f3b | 373 | |
a3a9e287 HV |
374 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
375 | return -EINVAL; | |
798166db | 376 | return amradio_setfreq(radio, f->frequency); |
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 | |
a3a9e287 HV |
385 | if (f->tuner != 0) |
386 | return -EINVAL; | |
2aa72f3b AK |
387 | f->type = V4L2_TUNER_RADIO; |
388 | f->frequency = radio->curfreq; | |
4aebc289 | 389 | |
2aa72f3b AK |
390 | return 0; |
391 | } | |
392 | ||
393 | /* vidioc_queryctrl - enumerate control items */ | |
394 | static int vidioc_queryctrl(struct file *file, void *priv, | |
395 | struct v4l2_queryctrl *qc) | |
396 | { | |
b466248d AK |
397 | switch (qc->id) { |
398 | case V4L2_CID_AUDIO_MUTE: | |
399 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
2aa72f3b | 400 | } |
b466248d | 401 | |
2aa72f3b AK |
402 | return -EINVAL; |
403 | } | |
404 | ||
405 | /* vidioc_g_ctrl - get the value of a control */ | |
406 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
407 | struct v4l2_control *ctrl) | |
408 | { | |
ceb99e1b | 409 | struct amradio_device *radio = file->private_data; |
3480130a | 410 | |
2aa72f3b AK |
411 | switch (ctrl->id) { |
412 | case V4L2_CID_AUDIO_MUTE: | |
413 | ctrl->value = radio->muted; | |
414 | return 0; | |
415 | } | |
4aebc289 | 416 | |
2aa72f3b AK |
417 | return -EINVAL; |
418 | } | |
419 | ||
420 | /* vidioc_s_ctrl - set the value of a control */ | |
421 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
422 | struct v4l2_control *ctrl) | |
423 | { | |
ceb99e1b | 424 | struct amradio_device *radio = file->private_data; |
4aebc289 | 425 | int retval = -EINVAL; |
3480130a | 426 | |
2aa72f3b AK |
427 | switch (ctrl->id) { |
428 | case V4L2_CID_AUDIO_MUTE: | |
16a72f41 | 429 | if (ctrl->value) |
db821804 | 430 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 431 | else |
db821804 | 432 | retval = amradio_set_mute(radio, AMRADIO_START); |
16a72f41 | 433 | |
4aebc289 | 434 | break; |
2aa72f3b | 435 | } |
4aebc289 | 436 | |
4aebc289 | 437 | return retval; |
2aa72f3b AK |
438 | } |
439 | ||
440 | /* vidioc_g_audio - get audio attributes */ | |
441 | static int vidioc_g_audio(struct file *file, void *priv, | |
442 | struct v4l2_audio *a) | |
443 | { | |
444 | if (a->index > 1) | |
445 | return -EINVAL; | |
446 | ||
447 | strcpy(a->name, "Radio"); | |
448 | a->capability = V4L2_AUDCAP_STEREO; | |
449 | return 0; | |
450 | } | |
451 | ||
452 | /* vidioc_s_audio - set audio attributes */ | |
453 | static int vidioc_s_audio(struct file *file, void *priv, | |
454 | struct v4l2_audio *a) | |
455 | { | |
456 | if (a->index != 0) | |
457 | return -EINVAL; | |
458 | return 0; | |
459 | } | |
460 | ||
461 | /* vidioc_g_input - get input */ | |
462 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
463 | { | |
464 | *i = 0; | |
465 | return 0; | |
466 | } | |
467 | ||
468 | /* vidioc_s_input - set input */ | |
469 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
470 | { | |
471 | if (i != 0) | |
472 | return -EINVAL; | |
473 | return 0; | |
474 | } | |
475 | ||
502d5016 | 476 | static int usb_amradio_init(struct amradio_device *radio) |
2aa72f3b | 477 | { |
a5d69475 | 478 | int retval; |
2aa72f3b | 479 | |
502d5016 | 480 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 481 | if (retval) |
502d5016 | 482 | goto out_err; |
0fabb783 | 483 | |
502d5016 | 484 | retval = amradio_set_stereo(radio, WANT_STEREO); |
16a72f41 | 485 | if (retval) |
502d5016 | 486 | goto out_err; |
2aa72f3b | 487 | |
502d5016 DE |
488 | radio->initialized = 1; |
489 | goto out; | |
490 | ||
491 | out_err: | |
492 | amradio_dev_err(&radio->videodev.dev, "initialization failed\n"); | |
493 | out: | |
494 | return retval; | |
495 | } | |
496 | ||
2aa72f3b | 497 | /* open device - amradio_start() and amradio_setfreq() */ |
bec43661 | 498 | static int usb_amradio_open(struct file *file) |
2aa72f3b | 499 | { |
a2bdc5e6 | 500 | struct amradio_device *radio = video_drvdata(file); |
361ae54f | 501 | int retval; |
a5d69475 | 502 | |
ceb99e1b | 503 | file->private_data = radio; |
d89ce0d9 ON |
504 | retval = usb_autopm_get_interface(radio->intf); |
505 | if (retval) | |
361ae54f | 506 | return retval; |
1bb16d71 | 507 | |
d89ce0d9 | 508 | if (unlikely(!radio->initialized)) { |
502d5016 | 509 | retval = usb_amradio_init(radio); |
d89ce0d9 ON |
510 | if (retval) |
511 | usb_autopm_put_interface(radio->intf); | |
512 | } | |
4aebc289 | 513 | return retval; |
2aa72f3b AK |
514 | } |
515 | ||
f4e9043e | 516 | /*close device */ |
bec43661 | 517 | static int usb_amradio_close(struct file *file) |
2aa72f3b | 518 | { |
ceb99e1b | 519 | struct amradio_device *radio = file->private_data; |
eac000a9 | 520 | |
a682d4cb HV |
521 | if (video_is_registered(&radio->videodev)) |
522 | usb_autopm_put_interface(radio->intf); | |
361ae54f | 523 | return 0; |
2aa72f3b AK |
524 | } |
525 | ||
526 | /* Suspend device - stop device. Need to be checked and fixed */ | |
527 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
528 | { | |
a2bdc5e6 | 529 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 530 | |
a682d4cb | 531 | mutex_lock(&radio->lock); |
d8970e5f | 532 | if (!radio->muted && radio->initialized) { |
16a72f41 | 533 | amradio_set_mute(radio, AMRADIO_STOP); |
d8970e5f DE |
534 | radio->muted = 0; |
535 | } | |
a682d4cb | 536 | mutex_unlock(&radio->lock); |
2aa72f3b | 537 | |
e60b022e | 538 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b AK |
539 | return 0; |
540 | } | |
541 | ||
542 | /* Resume device - start device. Need to be checked and fixed */ | |
543 | static int usb_amradio_resume(struct usb_interface *intf) | |
544 | { | |
a2bdc5e6 | 545 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 546 | |
a682d4cb | 547 | mutex_lock(&radio->lock); |
d8970e5f | 548 | if (unlikely(!radio->initialized)) |
a682d4cb | 549 | goto unlock; |
d8970e5f DE |
550 | |
551 | if (radio->stereo) | |
16a72f41 | 552 | amradio_set_stereo(radio, WANT_STEREO); |
d8970e5f | 553 | else |
16a72f41 | 554 | amradio_set_stereo(radio, WANT_MONO); |
d8970e5f | 555 | |
16a72f41 | 556 | amradio_setfreq(radio, radio->curfreq); |
2aa72f3b | 557 | |
16a72f41 DE |
558 | if (!radio->muted) |
559 | amradio_set_mute(radio, AMRADIO_START); | |
d8970e5f | 560 | |
a682d4cb HV |
561 | unlock: |
562 | mutex_unlock(&radio->lock); | |
563 | ||
e60b022e | 564 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b AK |
565 | return 0; |
566 | } | |
567 | ||
568 | /* File system interface */ | |
bec43661 | 569 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b AK |
570 | .owner = THIS_MODULE, |
571 | .open = usb_amradio_open, | |
572 | .release = usb_amradio_close, | |
361ae54f | 573 | .unlocked_ioctl = video_ioctl2, |
2aa72f3b AK |
574 | }; |
575 | ||
576 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
577 | .vidioc_querycap = vidioc_querycap, | |
578 | .vidioc_g_tuner = vidioc_g_tuner, | |
579 | .vidioc_s_tuner = vidioc_s_tuner, | |
580 | .vidioc_g_frequency = vidioc_g_frequency, | |
581 | .vidioc_s_frequency = vidioc_s_frequency, | |
582 | .vidioc_queryctrl = vidioc_queryctrl, | |
583 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
584 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
585 | .vidioc_g_audio = vidioc_g_audio, | |
586 | .vidioc_s_audio = vidioc_s_audio, | |
587 | .vidioc_g_input = vidioc_g_input, | |
588 | .vidioc_s_input = vidioc_s_input, | |
589 | }; | |
590 | ||
b466248d | 591 | static void usb_amradio_video_device_release(struct video_device *videodev) |
f4e9043e | 592 | { |
a2bdc5e6 | 593 | struct amradio_device *radio = video_get_drvdata(videodev); |
b466248d | 594 | |
f4e9043e AK |
595 | /* free rest memory */ |
596 | kfree(radio->buffer); | |
597 | kfree(radio); | |
598 | } | |
599 | ||
a5d69475 | 600 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
601 | static int usb_amradio_probe(struct usb_interface *intf, |
602 | const struct usb_device_id *id) | |
603 | { | |
604 | struct amradio_device *radio; | |
1b8bbb3c | 605 | int retval = 0; |
2aa72f3b | 606 | |
b466248d | 607 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
2aa72f3b | 608 | |
8edafcc6 AK |
609 | if (!radio) { |
610 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
1b8bbb3c DE |
611 | retval = -ENOMEM; |
612 | goto err; | |
8edafcc6 | 613 | } |
2aa72f3b AK |
614 | |
615 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
616 | ||
8edafcc6 AK |
617 | if (!radio->buffer) { |
618 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
1b8bbb3c DE |
619 | retval = -ENOMEM; |
620 | goto err_nobuf; | |
2aa72f3b AK |
621 | } |
622 | ||
d1939e4c | 623 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
b466248d AK |
624 | if (retval < 0) { |
625 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); | |
1b8bbb3c | 626 | goto err_v4l2; |
b466248d AK |
627 | } |
628 | ||
361ae54f HV |
629 | mutex_init(&radio->lock); |
630 | ||
d1939e4c | 631 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
7a7d92e0 | 632 | sizeof(radio->videodev.name)); |
d1939e4c | 633 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
7a7d92e0 DE |
634 | radio->videodev.fops = &usb_amradio_fops; |
635 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; | |
636 | radio->videodev.release = usb_amradio_video_device_release; | |
361ae54f | 637 | radio->videodev.lock = &radio->lock; |
2aa72f3b | 638 | |
2aa72f3b | 639 | radio->usbdev = interface_to_usbdev(intf); |
d89ce0d9 | 640 | radio->intf = intf; |
2aa72f3b AK |
641 | radio->curfreq = 95.16 * FREQ_MUL; |
642 | ||
7a7d92e0 | 643 | video_set_drvdata(&radio->videodev, radio); |
b466248d | 644 | |
7a7d92e0 DE |
645 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
646 | radio_nr); | |
a5d69475 | 647 | if (retval < 0) { |
65c51dc9 | 648 | dev_err(&intf->dev, "could not register video device\n"); |
1b8bbb3c | 649 | goto err_vdev; |
2aa72f3b AK |
650 | } |
651 | ||
2aa72f3b | 652 | return 0; |
1b8bbb3c DE |
653 | |
654 | err_vdev: | |
d1939e4c | 655 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
656 | err_v4l2: |
657 | kfree(radio->buffer); | |
658 | err_nobuf: | |
659 | kfree(radio); | |
660 | err: | |
661 | return retval; | |
2aa72f3b AK |
662 | } |
663 | ||
664 | static int __init amradio_init(void) | |
665 | { | |
666 | int retval = usb_register(&usb_amradio_driver); | |
667 | ||
e60b022e AK |
668 | pr_info(KBUILD_MODNAME |
669 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); | |
670 | ||
2aa72f3b | 671 | if (retval) |
e60b022e AK |
672 | pr_err(KBUILD_MODNAME |
673 | ": usb_register failed. Error number %d\n", retval); | |
674 | ||
2aa72f3b AK |
675 | return retval; |
676 | } | |
677 | ||
678 | static void __exit amradio_exit(void) | |
679 | { | |
680 | usb_deregister(&usb_amradio_driver); | |
681 | } | |
682 | ||
683 | module_init(amradio_init); | |
684 | module_exit(amradio_exit); | |
685 |