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. | |
8effbff4 | 35 | * http://www.spinics.net/lists/linux-usb-devel/msg10109.html |
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 | 64 | #include <media/v4l2-ioctl.h> |
85578b0f HV |
65 | #include <media/v4l2-ctrls.h> |
66 | #include <media/v4l2-event.h> | |
2aa72f3b | 67 | #include <linux/usb.h> |
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" | |
29834c1a | 73 | #define DRIVER_VERSION "0.1.2" |
2aa72f3b AK |
74 | |
75 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
76 | MODULE_DESCRIPTION(DRIVER_DESC); | |
77 | MODULE_LICENSE("GPL"); | |
29834c1a | 78 | MODULE_VERSION(DRIVER_VERSION); |
2aa72f3b AK |
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 | |
25985edc | 103 | * List isn't full and will be updated with implementation of new functions |
db821804 | 104 | */ |
f7c1a380 | 105 | #define AMRADIO_SET_FREQ 0xa4 |
4bd9ff19 | 106 | #define AMRADIO_GET_READY_FLAG 0xa5 |
77cf3934 | 107 | #define AMRADIO_GET_SIGNAL 0xa7 |
4bd9ff19 HV |
108 | #define AMRADIO_GET_FREQ 0xa8 |
109 | #define AMRADIO_SET_SEARCH_UP 0xa9 | |
110 | #define AMRADIO_SET_SEARCH_DOWN 0xaa | |
db821804 | 111 | #define AMRADIO_SET_MUTE 0xab |
4bd9ff19 HV |
112 | #define AMRADIO_SET_RIGHT_MUTE 0xac |
113 | #define AMRADIO_SET_LEFT_MUTE 0xad | |
1bb16d71 | 114 | #define AMRADIO_SET_MONO 0xae |
4bd9ff19 HV |
115 | #define AMRADIO_SET_SEARCH_LVL 0xb0 |
116 | #define AMRADIO_STOP_SEARCH 0xb1 | |
db821804 | 117 | |
1bb16d71 AK |
118 | /* Comfortable defines for amradio_set_stereo */ |
119 | #define WANT_STEREO 0x00 | |
120 | #define WANT_MONO 0x01 | |
121 | ||
2aa72f3b AK |
122 | /* module parameter */ |
123 | static int radio_nr = -1; | |
124 | module_param(radio_nr, int, 0); | |
125 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); | |
126 | ||
2aa72f3b AK |
127 | /* Data for one (physical) device */ |
128 | struct amradio_device { | |
129 | /* reference to USB and video device */ | |
130 | struct usb_device *usbdev; | |
d89ce0d9 | 131 | struct usb_interface *intf; |
85578b0f | 132 | struct video_device vdev; |
b466248d | 133 | struct v4l2_device v4l2_dev; |
85578b0f | 134 | struct v4l2_ctrl_handler hdl; |
2aa72f3b | 135 | |
4bd9ff19 | 136 | u8 *buffer; |
2aa72f3b AK |
137 | struct mutex lock; /* buffer locking */ |
138 | int curfreq; | |
139 | int stereo; | |
2aa72f3b AK |
140 | int muted; |
141 | }; | |
142 | ||
a2bdc5e6 HV |
143 | static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev) |
144 | { | |
145 | return container_of(v4l2_dev, struct amradio_device, v4l2_dev); | |
146 | } | |
ceb99e1b | 147 | |
4bd9ff19 HV |
148 | static int amradio_send_cmd(struct amradio_device *radio, u8 cmd, u8 arg, |
149 | u8 *extra, u8 extralen, bool reply) | |
2aa72f3b AK |
150 | { |
151 | int retval; | |
152 | int size; | |
153 | ||
2aa72f3b AK |
154 | radio->buffer[0] = 0x00; |
155 | radio->buffer[1] = 0x55; | |
156 | radio->buffer[2] = 0xaa; | |
4bd9ff19 HV |
157 | radio->buffer[3] = extralen; |
158 | radio->buffer[4] = cmd; | |
159 | radio->buffer[5] = arg; | |
2aa72f3b | 160 | radio->buffer[6] = 0x00; |
4bd9ff19 | 161 | radio->buffer[7] = extra || reply ? 8 : 0; |
2aa72f3b AK |
162 | |
163 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
4bd9ff19 | 164 | radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); |
2aa72f3b | 165 | |
e57458dc | 166 | if (retval < 0 || size != BUFFER_LENGTH) { |
4bd9ff19 HV |
167 | if (video_is_registered(&radio->vdev)) |
168 | amradio_dev_warn(&radio->vdev.dev, | |
169 | "cmd %02x failed\n", cmd); | |
170 | return retval ? retval : -EIO; | |
2aa72f3b | 171 | } |
4bd9ff19 HV |
172 | if (!extra && !reply) |
173 | return 0; | |
174 | ||
175 | if (extra) { | |
176 | memcpy(radio->buffer, extra, extralen); | |
177 | memset(radio->buffer + extralen, 0, 8 - extralen); | |
178 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
179 | radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); | |
180 | } else { | |
181 | memset(radio->buffer, 0, 8); | |
182 | retval = usb_bulk_msg(radio->usbdev, usb_rcvbulkpipe(radio->usbdev, 0x81), | |
183 | radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); | |
184 | } | |
185 | if (retval == 0 && size == BUFFER_LENGTH) | |
186 | return 0; | |
187 | if (video_is_registered(&radio->vdev) && cmd != AMRADIO_GET_READY_FLAG) | |
188 | amradio_dev_warn(&radio->vdev.dev, "follow-up to cmd %02x failed\n", cmd); | |
189 | return retval ? retval : -EIO; | |
190 | } | |
191 | ||
192 | /* switch on/off the radio. Send 8 bytes to device */ | |
193 | static int amradio_set_mute(struct amradio_device *radio, bool mute) | |
194 | { | |
195 | int ret = amradio_send_cmd(radio, | |
196 | AMRADIO_SET_MUTE, mute, NULL, 0, false); | |
197 | ||
198 | if (!ret) | |
199 | radio->muted = mute; | |
200 | return ret; | |
2aa72f3b AK |
201 | } |
202 | ||
203 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
4bd9ff19 | 204 | static int amradio_set_freq(struct amradio_device *radio, int freq) |
2aa72f3b | 205 | { |
4b0cac5e | 206 | unsigned short freq_send; |
4bd9ff19 | 207 | u8 buf[3]; |
2aa72f3b | 208 | int retval; |
2aa72f3b | 209 | |
4b0cac5e AK |
210 | /* we need to be sure that frequency isn't out of range */ |
211 | freq = clamp_t(unsigned, freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL); | |
212 | freq_send = 0x10 + (freq >> 3) / 25; | |
213 | ||
2aa72f3b | 214 | /* frequency is calculated from freq_send and placed in first 2 bytes */ |
4bd9ff19 HV |
215 | buf[0] = (freq_send >> 8) & 0xff; |
216 | buf[1] = freq_send & 0xff; | |
217 | buf[2] = 0x01; | |
2aa72f3b | 218 | |
4bd9ff19 HV |
219 | retval = amradio_send_cmd(radio, AMRADIO_SET_FREQ, 0, buf, 3, false); |
220 | if (retval) | |
221 | return retval; | |
222 | radio->curfreq = freq; | |
223 | msleep(40); | |
224 | return 0; | |
1bb16d71 AK |
225 | } |
226 | ||
4bd9ff19 | 227 | static int amradio_set_stereo(struct amradio_device *radio, bool stereo) |
1bb16d71 | 228 | { |
4bd9ff19 HV |
229 | int ret = amradio_send_cmd(radio, |
230 | AMRADIO_SET_MONO, !stereo, NULL, 0, false); | |
1bb16d71 | 231 | |
4bd9ff19 HV |
232 | if (!ret) |
233 | radio->stereo = stereo; | |
234 | return ret; | |
2aa72f3b AK |
235 | } |
236 | ||
77cf3934 HV |
237 | static int amradio_get_stat(struct amradio_device *radio, bool *is_stereo, u32 *signal) |
238 | { | |
4bd9ff19 HV |
239 | int ret = amradio_send_cmd(radio, |
240 | AMRADIO_GET_SIGNAL, 0, NULL, 0, true); | |
77cf3934 | 241 | |
4bd9ff19 HV |
242 | if (ret) |
243 | return ret; | |
77cf3934 HV |
244 | *is_stereo = radio->buffer[2] >> 7; |
245 | *signal = (radio->buffer[3] & 0xf0) << 8; | |
246 | return 0; | |
247 | } | |
248 | ||
71f07d94 AK |
249 | /* Handle unplugging the device. |
250 | * We call video_unregister_device in any case. | |
251 | * The last function called in this procedure is | |
252 | * usb_amradio_device_release. | |
253 | */ | |
2aa72f3b AK |
254 | static void usb_amradio_disconnect(struct usb_interface *intf) |
255 | { | |
a2bdc5e6 | 256 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 257 | |
f4e9043e | 258 | mutex_lock(&radio->lock); |
85578b0f | 259 | video_unregister_device(&radio->vdev); |
4bd9ff19 HV |
260 | amradio_set_mute(radio, true); |
261 | usb_set_intfdata(intf, NULL); | |
b466248d | 262 | v4l2_device_disconnect(&radio->v4l2_dev); |
a682d4cb | 263 | mutex_unlock(&radio->lock); |
85578b0f | 264 | v4l2_device_put(&radio->v4l2_dev); |
2aa72f3b AK |
265 | } |
266 | ||
267 | /* vidioc_querycap - query device capabilities */ | |
268 | static int vidioc_querycap(struct file *file, void *priv, | |
269 | struct v4l2_capability *v) | |
270 | { | |
85578b0f | 271 | struct amradio_device *radio = video_drvdata(file); |
c7181cfa | 272 | |
2aa72f3b AK |
273 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
274 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 275 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
4bd9ff19 HV |
276 | v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER | |
277 | V4L2_CAP_HW_FREQ_SEEK; | |
85578b0f | 278 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; |
2aa72f3b AK |
279 | return 0; |
280 | } | |
281 | ||
282 | /* vidioc_g_tuner - get tuner attributes */ | |
283 | static int vidioc_g_tuner(struct file *file, void *priv, | |
284 | struct v4l2_tuner *v) | |
285 | { | |
85578b0f | 286 | struct amradio_device *radio = video_drvdata(file); |
77cf3934 HV |
287 | bool is_stereo = false; |
288 | int retval; | |
2aa72f3b AK |
289 | |
290 | if (v->index > 0) | |
291 | return -EINVAL; | |
292 | ||
77cf3934 HV |
293 | v->signal = 0; |
294 | retval = amradio_get_stat(radio, &is_stereo, &v->signal); | |
295 | if (retval) | |
296 | return retval; | |
297 | ||
2aa72f3b AK |
298 | strcpy(v->name, "FM"); |
299 | v->type = V4L2_TUNER_RADIO; | |
300 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
301 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
54f6019b HV |
302 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
303 | V4L2_TUNER_CAP_HWSEEK_WRAP; | |
77cf3934 | 304 | v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; |
85578b0f HV |
305 | v->audmode = radio->stereo ? |
306 | V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO; | |
307 | return 0; | |
2aa72f3b AK |
308 | } |
309 | ||
310 | /* vidioc_s_tuner - set tuner attributes */ | |
311 | static int vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 312 | const struct v4l2_tuner *v) |
2aa72f3b | 313 | { |
85578b0f | 314 | struct amradio_device *radio = video_drvdata(file); |
3480130a | 315 | |
2aa72f3b AK |
316 | if (v->index > 0) |
317 | return -EINVAL; | |
1bb16d71 AK |
318 | |
319 | /* mono/stereo selector */ | |
320 | switch (v->audmode) { | |
321 | case V4L2_TUNER_MODE_MONO: | |
85578b0f HV |
322 | return amradio_set_stereo(radio, WANT_MONO); |
323 | default: | |
324 | return amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 325 | } |
2aa72f3b AK |
326 | } |
327 | ||
328 | /* vidioc_s_frequency - set tuner radio frequency */ | |
329 | static int vidioc_s_frequency(struct file *file, void *priv, | |
b530a447 | 330 | const struct v4l2_frequency *f) |
2aa72f3b | 331 | { |
85578b0f | 332 | struct amradio_device *radio = video_drvdata(file); |
2aa72f3b | 333 | |
85578b0f | 334 | if (f->tuner != 0) |
a3a9e287 | 335 | return -EINVAL; |
4b0cac5e | 336 | return amradio_set_freq(radio, f->frequency); |
2aa72f3b AK |
337 | } |
338 | ||
339 | /* vidioc_g_frequency - get tuner radio frequency */ | |
340 | static int vidioc_g_frequency(struct file *file, void *priv, | |
341 | struct v4l2_frequency *f) | |
342 | { | |
85578b0f | 343 | struct amradio_device *radio = video_drvdata(file); |
3480130a | 344 | |
85578b0f | 345 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
a3a9e287 | 346 | return -EINVAL; |
2aa72f3b AK |
347 | f->type = V4L2_TUNER_RADIO; |
348 | f->frequency = radio->curfreq; | |
4aebc289 | 349 | |
2aa72f3b AK |
350 | return 0; |
351 | } | |
352 | ||
4bd9ff19 | 353 | static int vidioc_s_hw_freq_seek(struct file *file, void *priv, |
ec6f4328 | 354 | const struct v4l2_hw_freq_seek *seek) |
4bd9ff19 HV |
355 | { |
356 | static u8 buf[8] = { | |
357 | 0x3d, 0x32, 0x0f, 0x08, 0x3d, 0x32, 0x0f, 0x08 | |
358 | }; | |
359 | struct amradio_device *radio = video_drvdata(file); | |
360 | unsigned long timeout; | |
361 | int retval; | |
362 | ||
363 | if (seek->tuner != 0 || !seek->wrap_around) | |
364 | return -EINVAL; | |
365 | ||
617ade61 HV |
366 | if (file->f_flags & O_NONBLOCK) |
367 | return -EWOULDBLOCK; | |
368 | ||
4bd9ff19 HV |
369 | retval = amradio_send_cmd(radio, |
370 | AMRADIO_SET_SEARCH_LVL, 0, buf, 8, false); | |
371 | if (retval) | |
372 | return retval; | |
373 | amradio_set_freq(radio, radio->curfreq); | |
374 | retval = amradio_send_cmd(radio, | |
375 | seek->seek_upward ? AMRADIO_SET_SEARCH_UP : AMRADIO_SET_SEARCH_DOWN, | |
376 | 0, NULL, 0, false); | |
377 | if (retval) | |
378 | return retval; | |
379 | timeout = jiffies + msecs_to_jiffies(30000); | |
380 | for (;;) { | |
381 | if (time_after(jiffies, timeout)) { | |
54f6019b | 382 | retval = -ENODATA; |
4bd9ff19 HV |
383 | break; |
384 | } | |
385 | if (schedule_timeout_interruptible(msecs_to_jiffies(10))) { | |
386 | retval = -ERESTARTSYS; | |
387 | break; | |
388 | } | |
389 | retval = amradio_send_cmd(radio, AMRADIO_GET_READY_FLAG, | |
390 | 0, NULL, 0, true); | |
391 | if (retval) | |
392 | continue; | |
393 | amradio_send_cmd(radio, AMRADIO_GET_FREQ, 0, NULL, 0, true); | |
394 | if (radio->buffer[1] || radio->buffer[2]) { | |
4b0cac5e | 395 | /* To check: sometimes radio->curfreq is set to out of range value */ |
4bd9ff19 HV |
396 | radio->curfreq = (radio->buffer[1] << 8) | radio->buffer[2]; |
397 | radio->curfreq = (radio->curfreq - 0x10) * 200; | |
398 | amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, | |
399 | 0, NULL, 0, false); | |
400 | amradio_set_freq(radio, radio->curfreq); | |
401 | retval = 0; | |
402 | break; | |
403 | } | |
404 | } | |
405 | amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, 0, NULL, 0, false); | |
406 | amradio_set_freq(radio, radio->curfreq); | |
407 | return retval; | |
408 | } | |
409 | ||
85578b0f | 410 | static int usb_amradio_s_ctrl(struct v4l2_ctrl *ctrl) |
2aa72f3b | 411 | { |
85578b0f HV |
412 | struct amradio_device *radio = |
413 | container_of(ctrl->handler, struct amradio_device, hdl); | |
3480130a | 414 | |
2aa72f3b AK |
415 | switch (ctrl->id) { |
416 | case V4L2_CID_AUDIO_MUTE: | |
4bd9ff19 | 417 | return amradio_set_mute(radio, ctrl->val); |
2aa72f3b | 418 | } |
4aebc289 | 419 | |
2aa72f3b AK |
420 | return -EINVAL; |
421 | } | |
422 | ||
502d5016 | 423 | static int usb_amradio_init(struct amradio_device *radio) |
2aa72f3b | 424 | { |
a5d69475 | 425 | int retval; |
2aa72f3b | 426 | |
4bd9ff19 | 427 | retval = amradio_set_mute(radio, true); |
16a72f41 | 428 | if (retval) |
502d5016 | 429 | goto out_err; |
4bd9ff19 | 430 | retval = amradio_set_stereo(radio, true); |
16a72f41 | 431 | if (retval) |
502d5016 | 432 | goto out_err; |
4bd9ff19 HV |
433 | retval = amradio_set_freq(radio, radio->curfreq); |
434 | if (retval) | |
435 | goto out_err; | |
436 | return 0; | |
502d5016 DE |
437 | |
438 | out_err: | |
85578b0f | 439 | amradio_dev_err(&radio->vdev.dev, "initialization failed\n"); |
502d5016 DE |
440 | return retval; |
441 | } | |
442 | ||
2aa72f3b AK |
443 | /* Suspend device - stop device. Need to be checked and fixed */ |
444 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
445 | { | |
a2bdc5e6 | 446 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 447 | |
a682d4cb | 448 | mutex_lock(&radio->lock); |
85578b0f | 449 | if (!radio->muted) { |
4bd9ff19 HV |
450 | amradio_set_mute(radio, true); |
451 | radio->muted = false; | |
d8970e5f | 452 | } |
a682d4cb | 453 | mutex_unlock(&radio->lock); |
2aa72f3b | 454 | |
e60b022e | 455 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b AK |
456 | return 0; |
457 | } | |
458 | ||
459 | /* Resume device - start device. Need to be checked and fixed */ | |
460 | static int usb_amradio_resume(struct usb_interface *intf) | |
461 | { | |
a2bdc5e6 | 462 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 463 | |
a682d4cb | 464 | mutex_lock(&radio->lock); |
4bd9ff19 HV |
465 | amradio_set_stereo(radio, radio->stereo); |
466 | amradio_set_freq(radio, radio->curfreq); | |
2aa72f3b | 467 | |
16a72f41 | 468 | if (!radio->muted) |
4bd9ff19 | 469 | amradio_set_mute(radio, false); |
d8970e5f | 470 | |
a682d4cb HV |
471 | mutex_unlock(&radio->lock); |
472 | ||
e60b022e | 473 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b AK |
474 | return 0; |
475 | } | |
476 | ||
85578b0f HV |
477 | static const struct v4l2_ctrl_ops usb_amradio_ctrl_ops = { |
478 | .s_ctrl = usb_amradio_s_ctrl, | |
479 | }; | |
480 | ||
2aa72f3b | 481 | /* File system interface */ |
bec43661 | 482 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b | 483 | .owner = THIS_MODULE, |
85578b0f HV |
484 | .open = v4l2_fh_open, |
485 | .release = v4l2_fh_release, | |
486 | .poll = v4l2_ctrl_poll, | |
361ae54f | 487 | .unlocked_ioctl = video_ioctl2, |
2aa72f3b AK |
488 | }; |
489 | ||
490 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
491 | .vidioc_querycap = vidioc_querycap, | |
492 | .vidioc_g_tuner = vidioc_g_tuner, | |
493 | .vidioc_s_tuner = vidioc_s_tuner, | |
494 | .vidioc_g_frequency = vidioc_g_frequency, | |
495 | .vidioc_s_frequency = vidioc_s_frequency, | |
4bd9ff19 | 496 | .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, |
85578b0f HV |
497 | .vidioc_log_status = v4l2_ctrl_log_status, |
498 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
499 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
2aa72f3b AK |
500 | }; |
501 | ||
85578b0f | 502 | static void usb_amradio_release(struct v4l2_device *v4l2_dev) |
f4e9043e | 503 | { |
85578b0f | 504 | struct amradio_device *radio = to_amradio_dev(v4l2_dev); |
b466248d | 505 | |
f4e9043e | 506 | /* free rest memory */ |
85578b0f HV |
507 | v4l2_ctrl_handler_free(&radio->hdl); |
508 | v4l2_device_unregister(&radio->v4l2_dev); | |
f4e9043e AK |
509 | kfree(radio->buffer); |
510 | kfree(radio); | |
511 | } | |
512 | ||
a5d69475 | 513 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
514 | static int usb_amradio_probe(struct usb_interface *intf, |
515 | const struct usb_device_id *id) | |
516 | { | |
517 | struct amradio_device *radio; | |
1b8bbb3c | 518 | int retval = 0; |
2aa72f3b | 519 | |
b466248d | 520 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
2aa72f3b | 521 | |
8edafcc6 AK |
522 | if (!radio) { |
523 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
1b8bbb3c DE |
524 | retval = -ENOMEM; |
525 | goto err; | |
8edafcc6 | 526 | } |
2aa72f3b AK |
527 | |
528 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
529 | ||
8edafcc6 AK |
530 | if (!radio->buffer) { |
531 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
1b8bbb3c DE |
532 | retval = -ENOMEM; |
533 | goto err_nobuf; | |
2aa72f3b AK |
534 | } |
535 | ||
d1939e4c | 536 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
b466248d AK |
537 | if (retval < 0) { |
538 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); | |
1b8bbb3c | 539 | goto err_v4l2; |
b466248d AK |
540 | } |
541 | ||
85578b0f HV |
542 | v4l2_ctrl_handler_init(&radio->hdl, 1); |
543 | v4l2_ctrl_new_std(&radio->hdl, &usb_amradio_ctrl_ops, | |
544 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
545 | if (radio->hdl.error) { | |
546 | retval = radio->hdl.error; | |
547 | dev_err(&intf->dev, "couldn't register control\n"); | |
548 | goto err_ctrl; | |
549 | } | |
361ae54f HV |
550 | mutex_init(&radio->lock); |
551 | ||
85578b0f HV |
552 | radio->v4l2_dev.ctrl_handler = &radio->hdl; |
553 | radio->v4l2_dev.release = usb_amradio_release; | |
554 | strlcpy(radio->vdev.name, radio->v4l2_dev.name, | |
555 | sizeof(radio->vdev.name)); | |
556 | radio->vdev.v4l2_dev = &radio->v4l2_dev; | |
557 | radio->vdev.fops = &usb_amradio_fops; | |
558 | radio->vdev.ioctl_ops = &usb_amradio_ioctl_ops; | |
559 | radio->vdev.release = video_device_release_empty; | |
560 | radio->vdev.lock = &radio->lock; | |
2aa72f3b | 561 | |
2aa72f3b | 562 | radio->usbdev = interface_to_usbdev(intf); |
d89ce0d9 | 563 | radio->intf = intf; |
85578b0f | 564 | usb_set_intfdata(intf, &radio->v4l2_dev); |
2aa72f3b AK |
565 | radio->curfreq = 95.16 * FREQ_MUL; |
566 | ||
85578b0f HV |
567 | video_set_drvdata(&radio->vdev, radio); |
568 | retval = usb_amradio_init(radio); | |
569 | if (retval) | |
570 | goto err_vdev; | |
b466248d | 571 | |
85578b0f | 572 | retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, |
7a7d92e0 | 573 | radio_nr); |
a5d69475 | 574 | if (retval < 0) { |
65c51dc9 | 575 | dev_err(&intf->dev, "could not register video device\n"); |
1b8bbb3c | 576 | goto err_vdev; |
2aa72f3b AK |
577 | } |
578 | ||
2aa72f3b | 579 | return 0; |
1b8bbb3c DE |
580 | |
581 | err_vdev: | |
85578b0f HV |
582 | v4l2_ctrl_handler_free(&radio->hdl); |
583 | err_ctrl: | |
d1939e4c | 584 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
585 | err_v4l2: |
586 | kfree(radio->buffer); | |
587 | err_nobuf: | |
588 | kfree(radio); | |
589 | err: | |
590 | return retval; | |
2aa72f3b AK |
591 | } |
592 | ||
85578b0f HV |
593 | /* USB Device ID List */ |
594 | static struct usb_device_id usb_amradio_device_table[] = { | |
595 | { USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
596 | USB_CLASS_HID, 0, 0) }, | |
597 | { } /* Terminating entry */ | |
598 | }; | |
599 | ||
600 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
601 | ||
602 | /* USB subsystem interface */ | |
603 | static struct usb_driver usb_amradio_driver = { | |
604 | .name = MR800_DRIVER_NAME, | |
605 | .probe = usb_amradio_probe, | |
606 | .disconnect = usb_amradio_disconnect, | |
607 | .suspend = usb_amradio_suspend, | |
608 | .resume = usb_amradio_resume, | |
609 | .reset_resume = usb_amradio_resume, | |
610 | .id_table = usb_amradio_device_table, | |
611 | }; | |
612 | ||
ecb3b2b3 | 613 | module_usb_driver(usb_amradio_driver); |