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 | ||
4aebc289 | 179 | BUG_ON(!mutex_is_locked(&radio->lock)); |
2aa72f3b AK |
180 | |
181 | radio->buffer[0] = 0x00; | |
182 | radio->buffer[1] = 0x55; | |
183 | radio->buffer[2] = 0xaa; | |
184 | radio->buffer[3] = 0x00; | |
db821804 AK |
185 | radio->buffer[4] = AMRADIO_SET_MUTE; |
186 | radio->buffer[5] = argument; | |
2aa72f3b AK |
187 | radio->buffer[6] = 0x00; |
188 | radio->buffer[7] = 0x00; | |
189 | ||
190 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
191 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
192 | ||
e57458dc | 193 | if (retval < 0 || size != BUFFER_LENGTH) { |
16a72f41 | 194 | amradio_dev_warn(&radio->videodev.dev, "set mute failed\n"); |
2aa72f3b AK |
195 | return retval; |
196 | } | |
197 | ||
db821804 | 198 | radio->muted = argument; |
2aa72f3b AK |
199 | |
200 | return retval; | |
201 | } | |
202 | ||
203 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
204 | static int amradio_setfreq(struct amradio_device *radio, int freq) | |
205 | { | |
206 | int retval; | |
207 | int size; | |
f7c1a380 | 208 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
2aa72f3b | 209 | |
4aebc289 | 210 | BUG_ON(!mutex_is_locked(&radio->lock)); |
2aa72f3b AK |
211 | |
212 | radio->buffer[0] = 0x00; | |
213 | radio->buffer[1] = 0x55; | |
214 | radio->buffer[2] = 0xaa; | |
215 | radio->buffer[3] = 0x03; | |
f7c1a380 | 216 | radio->buffer[4] = AMRADIO_SET_FREQ; |
2aa72f3b AK |
217 | radio->buffer[5] = 0x00; |
218 | radio->buffer[6] = 0x00; | |
219 | radio->buffer[7] = 0x08; | |
220 | ||
221 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
222 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
223 | ||
4aebc289 | 224 | if (retval < 0 || size != BUFFER_LENGTH) |
16a72f41 | 225 | goto out_err; |
2aa72f3b AK |
226 | |
227 | /* frequency is calculated from freq_send and placed in first 2 bytes */ | |
228 | radio->buffer[0] = (freq_send >> 8) & 0xff; | |
229 | radio->buffer[1] = freq_send & 0xff; | |
230 | radio->buffer[2] = 0x01; | |
231 | radio->buffer[3] = 0x00; | |
232 | radio->buffer[4] = 0x00; | |
233 | /* 5 and 6 bytes of buffer already = 0x00 */ | |
234 | radio->buffer[7] = 0x00; | |
235 | ||
236 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
237 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
238 | ||
16a72f41 DE |
239 | if (retval < 0 || size != BUFFER_LENGTH) |
240 | goto out_err; | |
2aa72f3b | 241 | |
798166db | 242 | radio->curfreq = freq; |
16a72f41 | 243 | goto out; |
1bb16d71 | 244 | |
16a72f41 DE |
245 | out_err: |
246 | amradio_dev_warn(&radio->videodev.dev, "set frequency failed\n"); | |
247 | out: | |
1bb16d71 AK |
248 | return retval; |
249 | } | |
250 | ||
251 | static int amradio_set_stereo(struct amradio_device *radio, char argument) | |
252 | { | |
253 | int retval; | |
254 | int size; | |
255 | ||
4aebc289 | 256 | BUG_ON(!mutex_is_locked(&radio->lock)); |
1bb16d71 AK |
257 | |
258 | radio->buffer[0] = 0x00; | |
259 | radio->buffer[1] = 0x55; | |
260 | radio->buffer[2] = 0xaa; | |
261 | radio->buffer[3] = 0x00; | |
262 | radio->buffer[4] = AMRADIO_SET_MONO; | |
263 | radio->buffer[5] = argument; | |
264 | radio->buffer[6] = 0x00; | |
265 | radio->buffer[7] = 0x00; | |
266 | ||
267 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
268 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); | |
269 | ||
270 | if (retval < 0 || size != BUFFER_LENGTH) { | |
16a72f41 | 271 | amradio_dev_warn(&radio->videodev.dev, "set stereo failed\n"); |
1bb16d71 AK |
272 | return retval; |
273 | } | |
274 | ||
30dd4508 DE |
275 | if (argument == WANT_STEREO) |
276 | radio->stereo = 1; | |
277 | else | |
278 | radio->stereo = 0; | |
7f03a585 | 279 | |
2aa72f3b AK |
280 | return retval; |
281 | } | |
282 | ||
71f07d94 AK |
283 | /* Handle unplugging the device. |
284 | * We call video_unregister_device in any case. | |
285 | * The last function called in this procedure is | |
286 | * usb_amradio_device_release. | |
287 | */ | |
2aa72f3b AK |
288 | static void usb_amradio_disconnect(struct usb_interface *intf) |
289 | { | |
a2bdc5e6 | 290 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 291 | |
f4e9043e | 292 | mutex_lock(&radio->lock); |
26452bfe | 293 | radio->usbdev = NULL; |
f4e9043e | 294 | mutex_unlock(&radio->lock); |
2aa72f3b | 295 | |
b466248d | 296 | v4l2_device_disconnect(&radio->v4l2_dev); |
4e361657 | 297 | video_unregister_device(&radio->videodev); |
2aa72f3b AK |
298 | } |
299 | ||
300 | /* vidioc_querycap - query device capabilities */ | |
301 | static int vidioc_querycap(struct file *file, void *priv, | |
302 | struct v4l2_capability *v) | |
303 | { | |
ceb99e1b | 304 | struct amradio_device *radio = file->private_data; |
c7181cfa | 305 | |
2aa72f3b AK |
306 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
307 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 308 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
2aa72f3b AK |
309 | v->version = RADIO_VERSION; |
310 | v->capabilities = V4L2_CAP_TUNER; | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /* vidioc_g_tuner - get tuner attributes */ | |
315 | static int vidioc_g_tuner(struct file *file, void *priv, | |
316 | struct v4l2_tuner *v) | |
317 | { | |
ceb99e1b | 318 | struct amradio_device *radio = file->private_data; |
1bb16d71 | 319 | int retval; |
2aa72f3b AK |
320 | |
321 | if (v->index > 0) | |
322 | return -EINVAL; | |
323 | ||
324 | /* TODO: Add function which look is signal stereo or not | |
325 | * amradio_getstat(radio); | |
326 | */ | |
1bb16d71 AK |
327 | |
328 | /* we call amradio_set_stereo to set radio->stereo | |
329 | * Honestly, amradio_getstat should cover this in future and | |
330 | * amradio_set_stereo shouldn't be here | |
331 | */ | |
332 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 333 | |
2aa72f3b AK |
334 | strcpy(v->name, "FM"); |
335 | v->type = V4L2_TUNER_RADIO; | |
336 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
337 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
338 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
339 | v->capability = V4L2_TUNER_CAP_LOW; | |
340 | if (radio->stereo) | |
341 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
342 | else | |
343 | v->audmode = V4L2_TUNER_MODE_MONO; | |
344 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ | |
345 | v->afc = 0; /* Don't know what is this */ | |
4aebc289 | 346 | |
4aebc289 | 347 | return retval; |
2aa72f3b AK |
348 | } |
349 | ||
350 | /* vidioc_s_tuner - set tuner attributes */ | |
351 | static int vidioc_s_tuner(struct file *file, void *priv, | |
352 | struct v4l2_tuner *v) | |
353 | { | |
ceb99e1b | 354 | struct amradio_device *radio = file->private_data; |
eac000a9 | 355 | int retval = -EINVAL; |
3480130a | 356 | |
2aa72f3b AK |
357 | if (v->index > 0) |
358 | return -EINVAL; | |
1bb16d71 AK |
359 | |
360 | /* mono/stereo selector */ | |
361 | switch (v->audmode) { | |
362 | case V4L2_TUNER_MODE_MONO: | |
363 | retval = amradio_set_stereo(radio, WANT_MONO); | |
1bb16d71 AK |
364 | break; |
365 | case V4L2_TUNER_MODE_STEREO: | |
366 | retval = amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 367 | break; |
1bb16d71 AK |
368 | } |
369 | ||
4aebc289 | 370 | return retval; |
2aa72f3b AK |
371 | } |
372 | ||
373 | /* vidioc_s_frequency - set tuner radio frequency */ | |
374 | static int vidioc_s_frequency(struct file *file, void *priv, | |
375 | struct v4l2_frequency *f) | |
376 | { | |
ceb99e1b | 377 | struct amradio_device *radio = file->private_data; |
2aa72f3b | 378 | |
a3a9e287 HV |
379 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
380 | return -EINVAL; | |
798166db | 381 | return amradio_setfreq(radio, f->frequency); |
2aa72f3b AK |
382 | } |
383 | ||
384 | /* vidioc_g_frequency - get tuner radio frequency */ | |
385 | static int vidioc_g_frequency(struct file *file, void *priv, | |
386 | struct v4l2_frequency *f) | |
387 | { | |
ceb99e1b | 388 | struct amradio_device *radio = file->private_data; |
3480130a | 389 | |
a3a9e287 HV |
390 | if (f->tuner != 0) |
391 | return -EINVAL; | |
2aa72f3b AK |
392 | f->type = V4L2_TUNER_RADIO; |
393 | f->frequency = radio->curfreq; | |
4aebc289 | 394 | |
2aa72f3b AK |
395 | return 0; |
396 | } | |
397 | ||
398 | /* vidioc_queryctrl - enumerate control items */ | |
399 | static int vidioc_queryctrl(struct file *file, void *priv, | |
400 | struct v4l2_queryctrl *qc) | |
401 | { | |
b466248d AK |
402 | switch (qc->id) { |
403 | case V4L2_CID_AUDIO_MUTE: | |
404 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); | |
2aa72f3b | 405 | } |
b466248d | 406 | |
2aa72f3b AK |
407 | return -EINVAL; |
408 | } | |
409 | ||
410 | /* vidioc_g_ctrl - get the value of a control */ | |
411 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
412 | struct v4l2_control *ctrl) | |
413 | { | |
ceb99e1b | 414 | struct amradio_device *radio = file->private_data; |
3480130a | 415 | |
2aa72f3b AK |
416 | switch (ctrl->id) { |
417 | case V4L2_CID_AUDIO_MUTE: | |
418 | ctrl->value = radio->muted; | |
419 | return 0; | |
420 | } | |
4aebc289 | 421 | |
2aa72f3b AK |
422 | return -EINVAL; |
423 | } | |
424 | ||
425 | /* vidioc_s_ctrl - set the value of a control */ | |
426 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
427 | struct v4l2_control *ctrl) | |
428 | { | |
ceb99e1b | 429 | struct amradio_device *radio = file->private_data; |
4aebc289 | 430 | int retval = -EINVAL; |
3480130a | 431 | |
2aa72f3b AK |
432 | switch (ctrl->id) { |
433 | case V4L2_CID_AUDIO_MUTE: | |
16a72f41 | 434 | if (ctrl->value) |
db821804 | 435 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 436 | else |
db821804 | 437 | retval = amradio_set_mute(radio, AMRADIO_START); |
16a72f41 | 438 | |
4aebc289 | 439 | break; |
2aa72f3b | 440 | } |
4aebc289 | 441 | |
4aebc289 | 442 | return retval; |
2aa72f3b AK |
443 | } |
444 | ||
445 | /* vidioc_g_audio - get audio attributes */ | |
446 | static int vidioc_g_audio(struct file *file, void *priv, | |
447 | struct v4l2_audio *a) | |
448 | { | |
449 | if (a->index > 1) | |
450 | return -EINVAL; | |
451 | ||
452 | strcpy(a->name, "Radio"); | |
453 | a->capability = V4L2_AUDCAP_STEREO; | |
454 | return 0; | |
455 | } | |
456 | ||
457 | /* vidioc_s_audio - set audio attributes */ | |
458 | static int vidioc_s_audio(struct file *file, void *priv, | |
459 | struct v4l2_audio *a) | |
460 | { | |
461 | if (a->index != 0) | |
462 | return -EINVAL; | |
463 | return 0; | |
464 | } | |
465 | ||
466 | /* vidioc_g_input - get input */ | |
467 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
468 | { | |
469 | *i = 0; | |
470 | return 0; | |
471 | } | |
472 | ||
473 | /* vidioc_s_input - set input */ | |
474 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
475 | { | |
476 | if (i != 0) | |
477 | return -EINVAL; | |
478 | return 0; | |
479 | } | |
480 | ||
502d5016 | 481 | static int usb_amradio_init(struct amradio_device *radio) |
2aa72f3b | 482 | { |
a5d69475 | 483 | int retval; |
2aa72f3b | 484 | |
502d5016 | 485 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
16a72f41 | 486 | if (retval) |
502d5016 | 487 | goto out_err; |
0fabb783 | 488 | |
502d5016 | 489 | retval = amradio_set_stereo(radio, WANT_STEREO); |
16a72f41 | 490 | if (retval) |
502d5016 | 491 | goto out_err; |
2aa72f3b | 492 | |
502d5016 DE |
493 | radio->initialized = 1; |
494 | goto out; | |
495 | ||
496 | out_err: | |
497 | amradio_dev_err(&radio->videodev.dev, "initialization failed\n"); | |
498 | out: | |
499 | return retval; | |
500 | } | |
501 | ||
2aa72f3b | 502 | /* open device - amradio_start() and amradio_setfreq() */ |
bec43661 | 503 | static int usb_amradio_open(struct file *file) |
2aa72f3b | 504 | { |
a2bdc5e6 | 505 | struct amradio_device *radio = video_drvdata(file); |
4aebc289 | 506 | int retval = 0; |
2aa72f3b | 507 | |
4aebc289 DE |
508 | mutex_lock(&radio->lock); |
509 | ||
26452bfe | 510 | if (!radio->usbdev) { |
4aebc289 DE |
511 | retval = -EIO; |
512 | goto unlock; | |
2aa72f3b | 513 | } |
a5d69475 | 514 | |
ceb99e1b | 515 | file->private_data = radio; |
d89ce0d9 ON |
516 | retval = usb_autopm_get_interface(radio->intf); |
517 | if (retval) | |
518 | goto unlock; | |
1bb16d71 | 519 | |
d89ce0d9 | 520 | if (unlikely(!radio->initialized)) { |
502d5016 | 521 | retval = usb_amradio_init(radio); |
d89ce0d9 ON |
522 | if (retval) |
523 | usb_autopm_put_interface(radio->intf); | |
524 | } | |
0fabb783 | 525 | |
4aebc289 DE |
526 | unlock: |
527 | mutex_unlock(&radio->lock); | |
528 | return retval; | |
2aa72f3b AK |
529 | } |
530 | ||
f4e9043e | 531 | /*close device */ |
bec43661 | 532 | static int usb_amradio_close(struct file *file) |
2aa72f3b | 533 | { |
ceb99e1b | 534 | struct amradio_device *radio = file->private_data; |
4aebc289 | 535 | int retval = 0; |
3480130a | 536 | |
52433bbb | 537 | mutex_lock(&radio->lock); |
4aebc289 | 538 | |
8a7cd16f | 539 | if (!radio->usbdev) |
4aebc289 | 540 | retval = -EIO; |
d89ce0d9 ON |
541 | else |
542 | usb_autopm_put_interface(radio->intf); | |
3480130a | 543 | |
52433bbb | 544 | mutex_unlock(&radio->lock); |
4aebc289 | 545 | return retval; |
2aa72f3b | 546 | } |
3480130a | 547 | |
eac000a9 DE |
548 | static long usb_amradio_ioctl(struct file *file, unsigned int cmd, |
549 | unsigned long arg) | |
550 | { | |
551 | struct amradio_device *radio = file->private_data; | |
552 | long retval = 0; | |
553 | ||
554 | mutex_lock(&radio->lock); | |
555 | ||
26452bfe | 556 | if (!radio->usbdev) { |
eac000a9 DE |
557 | retval = -EIO; |
558 | goto unlock; | |
2aa72f3b | 559 | } |
3480130a | 560 | |
eac000a9 DE |
561 | retval = video_ioctl2(file, cmd, arg); |
562 | ||
563 | unlock: | |
564 | mutex_unlock(&radio->lock); | |
565 | return retval; | |
2aa72f3b AK |
566 | } |
567 | ||
568 | /* Suspend device - stop device. Need to be checked and fixed */ | |
569 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
570 | { | |
a2bdc5e6 | 571 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 572 | |
4aebc289 DE |
573 | mutex_lock(&radio->lock); |
574 | ||
d8970e5f | 575 | if (!radio->muted && radio->initialized) { |
16a72f41 | 576 | amradio_set_mute(radio, AMRADIO_STOP); |
d8970e5f DE |
577 | radio->muted = 0; |
578 | } | |
2aa72f3b | 579 | |
e60b022e | 580 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b | 581 | |
4aebc289 | 582 | mutex_unlock(&radio->lock); |
2aa72f3b AK |
583 | return 0; |
584 | } | |
585 | ||
586 | /* Resume device - start device. Need to be checked and fixed */ | |
587 | static int usb_amradio_resume(struct usb_interface *intf) | |
588 | { | |
a2bdc5e6 | 589 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 590 | |
4aebc289 DE |
591 | mutex_lock(&radio->lock); |
592 | ||
d8970e5f DE |
593 | if (unlikely(!radio->initialized)) |
594 | goto unlock; | |
595 | ||
596 | if (radio->stereo) | |
16a72f41 | 597 | amradio_set_stereo(radio, WANT_STEREO); |
d8970e5f | 598 | else |
16a72f41 | 599 | amradio_set_stereo(radio, WANT_MONO); |
d8970e5f | 600 | |
16a72f41 | 601 | amradio_setfreq(radio, radio->curfreq); |
2aa72f3b | 602 | |
16a72f41 DE |
603 | if (!radio->muted) |
604 | amradio_set_mute(radio, AMRADIO_START); | |
d8970e5f DE |
605 | |
606 | unlock: | |
e60b022e | 607 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b | 608 | |
4aebc289 | 609 | mutex_unlock(&radio->lock); |
2aa72f3b AK |
610 | return 0; |
611 | } | |
612 | ||
613 | /* File system interface */ | |
bec43661 | 614 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b AK |
615 | .owner = THIS_MODULE, |
616 | .open = usb_amradio_open, | |
617 | .release = usb_amradio_close, | |
eac000a9 | 618 | .ioctl = usb_amradio_ioctl, |
2aa72f3b AK |
619 | }; |
620 | ||
621 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
622 | .vidioc_querycap = vidioc_querycap, | |
623 | .vidioc_g_tuner = vidioc_g_tuner, | |
624 | .vidioc_s_tuner = vidioc_s_tuner, | |
625 | .vidioc_g_frequency = vidioc_g_frequency, | |
626 | .vidioc_s_frequency = vidioc_s_frequency, | |
627 | .vidioc_queryctrl = vidioc_queryctrl, | |
628 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
629 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
630 | .vidioc_g_audio = vidioc_g_audio, | |
631 | .vidioc_s_audio = vidioc_s_audio, | |
632 | .vidioc_g_input = vidioc_g_input, | |
633 | .vidioc_s_input = vidioc_s_input, | |
634 | }; | |
635 | ||
b466248d | 636 | static void usb_amradio_video_device_release(struct video_device *videodev) |
f4e9043e | 637 | { |
a2bdc5e6 | 638 | struct amradio_device *radio = video_get_drvdata(videodev); |
b466248d | 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 | ||
2aa72f3b | 696 | return 0; |
1b8bbb3c DE |
697 | |
698 | err_vdev: | |
d1939e4c | 699 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
700 | err_v4l2: |
701 | kfree(radio->buffer); | |
702 | err_nobuf: | |
703 | kfree(radio); | |
704 | err: | |
705 | return retval; | |
2aa72f3b AK |
706 | } |
707 | ||
708 | static int __init amradio_init(void) | |
709 | { | |
710 | int retval = usb_register(&usb_amradio_driver); | |
711 | ||
e60b022e AK |
712 | pr_info(KBUILD_MODNAME |
713 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); | |
714 | ||
2aa72f3b | 715 | if (retval) |
e60b022e AK |
716 | pr_err(KBUILD_MODNAME |
717 | ": usb_register failed. Error number %d\n", retval); | |
718 | ||
2aa72f3b AK |
719 | return retval; |
720 | } | |
721 | ||
722 | static void __exit amradio_exit(void) | |
723 | { | |
724 | usb_deregister(&usb_amradio_driver); | |
725 | } | |
726 | ||
727 | module_init(amradio_init); | |
728 | module_exit(amradio_exit); | |
729 |