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Commit | Line | Data |
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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. | |
2aa72f3b AK |
18 | */ |
19 | ||
20 | /* | |
71f07d94 | 21 | * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c |
2aa72f3b AK |
22 | * |
23 | * When work was looked pretty good, i discover this: | |
24 | * http://av-usbradio.sourceforge.net/index.php | |
25 | * http://sourceforge.net/projects/av-usbradio/ | |
26 | * Latest release of theirs project was in 2005. | |
af901ca1 | 27 | * Probably, this driver could be improved through using their |
2aa72f3b | 28 | * achievements (specifications given). |
71f07d94 AK |
29 | * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio |
30 | * in 2007. He allowed to use his driver to improve current mr800 radio driver. | |
8effbff4 | 31 | * http://www.spinics.net/lists/linux-usb-devel/msg10109.html |
2aa72f3b | 32 | * |
2aa72f3b AK |
33 | * Version 0.01: First working version. |
34 | * It's required to blacklist AverMedia USB Radio | |
35 | * in usbhid/hid-quirks.c | |
71f07d94 AK |
36 | * Version 0.10: A lot of cleanups and fixes: unpluging the device, |
37 | * few mutex locks were added, codinstyle issues, etc. | |
38 | * Added stereo support. Thanks to | |
39 | * Douglas Schilling Landgraf <dougsland@gmail.com> and | |
40 | * David Ellingsworth <david@identd.dyndns.org> | |
41 | * for discussion, help and support. | |
b466248d | 42 | * Version 0.11: Converted to v4l2_device. |
2aa72f3b AK |
43 | * |
44 | * Many things to do: | |
3dbda77e | 45 | * - Correct power management of device (suspend & resume) |
2aa72f3b | 46 | * - Add code for scanning and smooth tuning |
2aa72f3b AK |
47 | * - Add code for sensitivity value |
48 | * - Correct mistakes | |
49 | * - In Japan another FREQ_MIN and FREQ_MAX | |
50 | */ | |
51 | ||
52 | /* kernel includes */ | |
53 | #include <linux/kernel.h> | |
54 | #include <linux/module.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/slab.h> | |
57 | #include <linux/input.h> | |
58 | #include <linux/videodev2.h> | |
b466248d | 59 | #include <media/v4l2-device.h> |
2aa72f3b | 60 | #include <media/v4l2-ioctl.h> |
85578b0f HV |
61 | #include <media/v4l2-ctrls.h> |
62 | #include <media/v4l2-event.h> | |
2aa72f3b | 63 | #include <linux/usb.h> |
24c44d85 | 64 | #include <linux/mutex.h> |
2aa72f3b AK |
65 | |
66 | /* driver and module definitions */ | |
67 | #define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" | |
68 | #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver" | |
29834c1a | 69 | #define DRIVER_VERSION "0.1.2" |
2aa72f3b AK |
70 | |
71 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
72 | MODULE_DESCRIPTION(DRIVER_DESC); | |
73 | MODULE_LICENSE("GPL"); | |
29834c1a | 74 | MODULE_VERSION(DRIVER_VERSION); |
2aa72f3b AK |
75 | |
76 | #define USB_AMRADIO_VENDOR 0x07ca | |
77 | #define USB_AMRADIO_PRODUCT 0xb800 | |
78 | ||
e60b022e AK |
79 | /* dev_warn macro with driver name */ |
80 | #define MR800_DRIVER_NAME "radio-mr800" | |
81 | #define amradio_dev_warn(dev, fmt, arg...) \ | |
82 | dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
83 | ||
502d5016 DE |
84 | #define amradio_dev_err(dev, fmt, arg...) \ |
85 | dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg) | |
86 | ||
2aa72f3b AK |
87 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
88 | #define BUFFER_LENGTH 8 | |
89 | #define USB_TIMEOUT 500 | |
90 | ||
91 | /* Frequency limits in MHz -- these are European values. For Japanese | |
92 | devices, that would be 76 and 91. */ | |
93 | #define FREQ_MIN 87.5 | |
94 | #define FREQ_MAX 108.0 | |
95 | #define FREQ_MUL 16000 | |
96 | ||
db821804 AK |
97 | /* |
98 | * Commands that device should understand | |
25985edc | 99 | * List isn't full and will be updated with implementation of new functions |
db821804 | 100 | */ |
f7c1a380 | 101 | #define AMRADIO_SET_FREQ 0xa4 |
4bd9ff19 | 102 | #define AMRADIO_GET_READY_FLAG 0xa5 |
77cf3934 | 103 | #define AMRADIO_GET_SIGNAL 0xa7 |
4bd9ff19 HV |
104 | #define AMRADIO_GET_FREQ 0xa8 |
105 | #define AMRADIO_SET_SEARCH_UP 0xa9 | |
106 | #define AMRADIO_SET_SEARCH_DOWN 0xaa | |
db821804 | 107 | #define AMRADIO_SET_MUTE 0xab |
4bd9ff19 HV |
108 | #define AMRADIO_SET_RIGHT_MUTE 0xac |
109 | #define AMRADIO_SET_LEFT_MUTE 0xad | |
1bb16d71 | 110 | #define AMRADIO_SET_MONO 0xae |
4bd9ff19 HV |
111 | #define AMRADIO_SET_SEARCH_LVL 0xb0 |
112 | #define AMRADIO_STOP_SEARCH 0xb1 | |
db821804 | 113 | |
1bb16d71 AK |
114 | /* Comfortable defines for amradio_set_stereo */ |
115 | #define WANT_STEREO 0x00 | |
116 | #define WANT_MONO 0x01 | |
117 | ||
2aa72f3b AK |
118 | /* module parameter */ |
119 | static int radio_nr = -1; | |
120 | module_param(radio_nr, int, 0); | |
121 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); | |
122 | ||
2aa72f3b AK |
123 | /* Data for one (physical) device */ |
124 | struct amradio_device { | |
125 | /* reference to USB and video device */ | |
126 | struct usb_device *usbdev; | |
d89ce0d9 | 127 | struct usb_interface *intf; |
85578b0f | 128 | struct video_device vdev; |
b466248d | 129 | struct v4l2_device v4l2_dev; |
85578b0f | 130 | struct v4l2_ctrl_handler hdl; |
2aa72f3b | 131 | |
4bd9ff19 | 132 | u8 *buffer; |
2aa72f3b AK |
133 | struct mutex lock; /* buffer locking */ |
134 | int curfreq; | |
135 | int stereo; | |
2aa72f3b AK |
136 | int muted; |
137 | }; | |
138 | ||
a2bdc5e6 HV |
139 | static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev) |
140 | { | |
141 | return container_of(v4l2_dev, struct amradio_device, v4l2_dev); | |
142 | } | |
ceb99e1b | 143 | |
4bd9ff19 HV |
144 | static int amradio_send_cmd(struct amradio_device *radio, u8 cmd, u8 arg, |
145 | u8 *extra, u8 extralen, bool reply) | |
2aa72f3b AK |
146 | { |
147 | int retval; | |
148 | int size; | |
149 | ||
2aa72f3b AK |
150 | radio->buffer[0] = 0x00; |
151 | radio->buffer[1] = 0x55; | |
152 | radio->buffer[2] = 0xaa; | |
4bd9ff19 HV |
153 | radio->buffer[3] = extralen; |
154 | radio->buffer[4] = cmd; | |
155 | radio->buffer[5] = arg; | |
2aa72f3b | 156 | radio->buffer[6] = 0x00; |
4bd9ff19 | 157 | radio->buffer[7] = extra || reply ? 8 : 0; |
2aa72f3b AK |
158 | |
159 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
4bd9ff19 | 160 | radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); |
2aa72f3b | 161 | |
e57458dc | 162 | if (retval < 0 || size != BUFFER_LENGTH) { |
4bd9ff19 HV |
163 | if (video_is_registered(&radio->vdev)) |
164 | amradio_dev_warn(&radio->vdev.dev, | |
165 | "cmd %02x failed\n", cmd); | |
166 | return retval ? retval : -EIO; | |
2aa72f3b | 167 | } |
4bd9ff19 HV |
168 | if (!extra && !reply) |
169 | return 0; | |
170 | ||
171 | if (extra) { | |
172 | memcpy(radio->buffer, extra, extralen); | |
173 | memset(radio->buffer + extralen, 0, 8 - extralen); | |
174 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), | |
175 | radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); | |
176 | } else { | |
177 | memset(radio->buffer, 0, 8); | |
178 | retval = usb_bulk_msg(radio->usbdev, usb_rcvbulkpipe(radio->usbdev, 0x81), | |
179 | radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT); | |
180 | } | |
181 | if (retval == 0 && size == BUFFER_LENGTH) | |
182 | return 0; | |
183 | if (video_is_registered(&radio->vdev) && cmd != AMRADIO_GET_READY_FLAG) | |
184 | amradio_dev_warn(&radio->vdev.dev, "follow-up to cmd %02x failed\n", cmd); | |
185 | return retval ? retval : -EIO; | |
186 | } | |
187 | ||
188 | /* switch on/off the radio. Send 8 bytes to device */ | |
189 | static int amradio_set_mute(struct amradio_device *radio, bool mute) | |
190 | { | |
191 | int ret = amradio_send_cmd(radio, | |
192 | AMRADIO_SET_MUTE, mute, NULL, 0, false); | |
193 | ||
194 | if (!ret) | |
195 | radio->muted = mute; | |
196 | return ret; | |
2aa72f3b AK |
197 | } |
198 | ||
199 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ | |
4bd9ff19 | 200 | static int amradio_set_freq(struct amradio_device *radio, int freq) |
2aa72f3b | 201 | { |
4b0cac5e | 202 | unsigned short freq_send; |
4bd9ff19 | 203 | u8 buf[3]; |
2aa72f3b | 204 | int retval; |
2aa72f3b | 205 | |
4b0cac5e AK |
206 | /* we need to be sure that frequency isn't out of range */ |
207 | freq = clamp_t(unsigned, freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL); | |
208 | freq_send = 0x10 + (freq >> 3) / 25; | |
209 | ||
2aa72f3b | 210 | /* frequency is calculated from freq_send and placed in first 2 bytes */ |
4bd9ff19 HV |
211 | buf[0] = (freq_send >> 8) & 0xff; |
212 | buf[1] = freq_send & 0xff; | |
213 | buf[2] = 0x01; | |
2aa72f3b | 214 | |
4bd9ff19 HV |
215 | retval = amradio_send_cmd(radio, AMRADIO_SET_FREQ, 0, buf, 3, false); |
216 | if (retval) | |
217 | return retval; | |
218 | radio->curfreq = freq; | |
219 | msleep(40); | |
220 | return 0; | |
1bb16d71 AK |
221 | } |
222 | ||
4bd9ff19 | 223 | static int amradio_set_stereo(struct amradio_device *radio, bool stereo) |
1bb16d71 | 224 | { |
4bd9ff19 HV |
225 | int ret = amradio_send_cmd(radio, |
226 | AMRADIO_SET_MONO, !stereo, NULL, 0, false); | |
1bb16d71 | 227 | |
4bd9ff19 HV |
228 | if (!ret) |
229 | radio->stereo = stereo; | |
230 | return ret; | |
2aa72f3b AK |
231 | } |
232 | ||
77cf3934 HV |
233 | static int amradio_get_stat(struct amradio_device *radio, bool *is_stereo, u32 *signal) |
234 | { | |
4bd9ff19 HV |
235 | int ret = amradio_send_cmd(radio, |
236 | AMRADIO_GET_SIGNAL, 0, NULL, 0, true); | |
77cf3934 | 237 | |
4bd9ff19 HV |
238 | if (ret) |
239 | return ret; | |
77cf3934 HV |
240 | *is_stereo = radio->buffer[2] >> 7; |
241 | *signal = (radio->buffer[3] & 0xf0) << 8; | |
242 | return 0; | |
243 | } | |
244 | ||
71f07d94 AK |
245 | /* Handle unplugging the device. |
246 | * We call video_unregister_device in any case. | |
247 | * The last function called in this procedure is | |
248 | * usb_amradio_device_release. | |
249 | */ | |
2aa72f3b AK |
250 | static void usb_amradio_disconnect(struct usb_interface *intf) |
251 | { | |
a2bdc5e6 | 252 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 253 | |
f4e9043e | 254 | mutex_lock(&radio->lock); |
85578b0f | 255 | video_unregister_device(&radio->vdev); |
4bd9ff19 HV |
256 | amradio_set_mute(radio, true); |
257 | usb_set_intfdata(intf, NULL); | |
b466248d | 258 | v4l2_device_disconnect(&radio->v4l2_dev); |
a682d4cb | 259 | mutex_unlock(&radio->lock); |
85578b0f | 260 | v4l2_device_put(&radio->v4l2_dev); |
2aa72f3b AK |
261 | } |
262 | ||
263 | /* vidioc_querycap - query device capabilities */ | |
264 | static int vidioc_querycap(struct file *file, void *priv, | |
265 | struct v4l2_capability *v) | |
266 | { | |
85578b0f | 267 | struct amradio_device *radio = video_drvdata(file); |
c7181cfa | 268 | |
2aa72f3b AK |
269 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
270 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); | |
c7181cfa | 271 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
4bd9ff19 HV |
272 | v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER | |
273 | V4L2_CAP_HW_FREQ_SEEK; | |
85578b0f | 274 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; |
2aa72f3b AK |
275 | return 0; |
276 | } | |
277 | ||
278 | /* vidioc_g_tuner - get tuner attributes */ | |
279 | static int vidioc_g_tuner(struct file *file, void *priv, | |
280 | struct v4l2_tuner *v) | |
281 | { | |
85578b0f | 282 | struct amradio_device *radio = video_drvdata(file); |
77cf3934 HV |
283 | bool is_stereo = false; |
284 | int retval; | |
2aa72f3b AK |
285 | |
286 | if (v->index > 0) | |
287 | return -EINVAL; | |
288 | ||
77cf3934 HV |
289 | v->signal = 0; |
290 | retval = amradio_get_stat(radio, &is_stereo, &v->signal); | |
291 | if (retval) | |
292 | return retval; | |
293 | ||
2aa72f3b AK |
294 | strcpy(v->name, "FM"); |
295 | v->type = V4L2_TUNER_RADIO; | |
296 | v->rangelow = FREQ_MIN * FREQ_MUL; | |
297 | v->rangehigh = FREQ_MAX * FREQ_MUL; | |
54f6019b HV |
298 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
299 | V4L2_TUNER_CAP_HWSEEK_WRAP; | |
77cf3934 | 300 | v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; |
85578b0f HV |
301 | v->audmode = radio->stereo ? |
302 | V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO; | |
303 | return 0; | |
2aa72f3b AK |
304 | } |
305 | ||
306 | /* vidioc_s_tuner - set tuner attributes */ | |
307 | static int vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 308 | const struct v4l2_tuner *v) |
2aa72f3b | 309 | { |
85578b0f | 310 | struct amradio_device *radio = video_drvdata(file); |
3480130a | 311 | |
2aa72f3b AK |
312 | if (v->index > 0) |
313 | return -EINVAL; | |
1bb16d71 AK |
314 | |
315 | /* mono/stereo selector */ | |
316 | switch (v->audmode) { | |
317 | case V4L2_TUNER_MODE_MONO: | |
85578b0f HV |
318 | return amradio_set_stereo(radio, WANT_MONO); |
319 | default: | |
320 | return amradio_set_stereo(radio, WANT_STEREO); | |
1bb16d71 | 321 | } |
2aa72f3b AK |
322 | } |
323 | ||
324 | /* vidioc_s_frequency - set tuner radio frequency */ | |
325 | static int vidioc_s_frequency(struct file *file, void *priv, | |
b530a447 | 326 | const struct v4l2_frequency *f) |
2aa72f3b | 327 | { |
85578b0f | 328 | struct amradio_device *radio = video_drvdata(file); |
2aa72f3b | 329 | |
85578b0f | 330 | if (f->tuner != 0) |
a3a9e287 | 331 | return -EINVAL; |
4b0cac5e | 332 | return amradio_set_freq(radio, f->frequency); |
2aa72f3b AK |
333 | } |
334 | ||
335 | /* vidioc_g_frequency - get tuner radio frequency */ | |
336 | static int vidioc_g_frequency(struct file *file, void *priv, | |
337 | struct v4l2_frequency *f) | |
338 | { | |
85578b0f | 339 | struct amradio_device *radio = video_drvdata(file); |
3480130a | 340 | |
85578b0f | 341 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
a3a9e287 | 342 | return -EINVAL; |
2aa72f3b AK |
343 | f->type = V4L2_TUNER_RADIO; |
344 | f->frequency = radio->curfreq; | |
4aebc289 | 345 | |
2aa72f3b AK |
346 | return 0; |
347 | } | |
348 | ||
4bd9ff19 | 349 | static int vidioc_s_hw_freq_seek(struct file *file, void *priv, |
ec6f4328 | 350 | const struct v4l2_hw_freq_seek *seek) |
4bd9ff19 HV |
351 | { |
352 | static u8 buf[8] = { | |
353 | 0x3d, 0x32, 0x0f, 0x08, 0x3d, 0x32, 0x0f, 0x08 | |
354 | }; | |
355 | struct amradio_device *radio = video_drvdata(file); | |
356 | unsigned long timeout; | |
357 | int retval; | |
358 | ||
359 | if (seek->tuner != 0 || !seek->wrap_around) | |
360 | return -EINVAL; | |
361 | ||
617ade61 HV |
362 | if (file->f_flags & O_NONBLOCK) |
363 | return -EWOULDBLOCK; | |
364 | ||
4bd9ff19 HV |
365 | retval = amradio_send_cmd(radio, |
366 | AMRADIO_SET_SEARCH_LVL, 0, buf, 8, false); | |
367 | if (retval) | |
368 | return retval; | |
369 | amradio_set_freq(radio, radio->curfreq); | |
370 | retval = amradio_send_cmd(radio, | |
371 | seek->seek_upward ? AMRADIO_SET_SEARCH_UP : AMRADIO_SET_SEARCH_DOWN, | |
372 | 0, NULL, 0, false); | |
373 | if (retval) | |
374 | return retval; | |
375 | timeout = jiffies + msecs_to_jiffies(30000); | |
376 | for (;;) { | |
377 | if (time_after(jiffies, timeout)) { | |
54f6019b | 378 | retval = -ENODATA; |
4bd9ff19 HV |
379 | break; |
380 | } | |
381 | if (schedule_timeout_interruptible(msecs_to_jiffies(10))) { | |
382 | retval = -ERESTARTSYS; | |
383 | break; | |
384 | } | |
385 | retval = amradio_send_cmd(radio, AMRADIO_GET_READY_FLAG, | |
386 | 0, NULL, 0, true); | |
387 | if (retval) | |
388 | continue; | |
389 | amradio_send_cmd(radio, AMRADIO_GET_FREQ, 0, NULL, 0, true); | |
390 | if (radio->buffer[1] || radio->buffer[2]) { | |
4b0cac5e | 391 | /* To check: sometimes radio->curfreq is set to out of range value */ |
4bd9ff19 HV |
392 | radio->curfreq = (radio->buffer[1] << 8) | radio->buffer[2]; |
393 | radio->curfreq = (radio->curfreq - 0x10) * 200; | |
394 | amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, | |
395 | 0, NULL, 0, false); | |
396 | amradio_set_freq(radio, radio->curfreq); | |
397 | retval = 0; | |
398 | break; | |
399 | } | |
400 | } | |
401 | amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, 0, NULL, 0, false); | |
402 | amradio_set_freq(radio, radio->curfreq); | |
403 | return retval; | |
404 | } | |
405 | ||
85578b0f | 406 | static int usb_amradio_s_ctrl(struct v4l2_ctrl *ctrl) |
2aa72f3b | 407 | { |
85578b0f HV |
408 | struct amradio_device *radio = |
409 | container_of(ctrl->handler, struct amradio_device, hdl); | |
3480130a | 410 | |
2aa72f3b AK |
411 | switch (ctrl->id) { |
412 | case V4L2_CID_AUDIO_MUTE: | |
4bd9ff19 | 413 | return amradio_set_mute(radio, ctrl->val); |
2aa72f3b | 414 | } |
4aebc289 | 415 | |
2aa72f3b AK |
416 | return -EINVAL; |
417 | } | |
418 | ||
502d5016 | 419 | static int usb_amradio_init(struct amradio_device *radio) |
2aa72f3b | 420 | { |
a5d69475 | 421 | int retval; |
2aa72f3b | 422 | |
4bd9ff19 | 423 | retval = amradio_set_mute(radio, true); |
16a72f41 | 424 | if (retval) |
502d5016 | 425 | goto out_err; |
4bd9ff19 | 426 | retval = amradio_set_stereo(radio, true); |
16a72f41 | 427 | if (retval) |
502d5016 | 428 | goto out_err; |
4bd9ff19 HV |
429 | retval = amradio_set_freq(radio, radio->curfreq); |
430 | if (retval) | |
431 | goto out_err; | |
432 | return 0; | |
502d5016 DE |
433 | |
434 | out_err: | |
85578b0f | 435 | amradio_dev_err(&radio->vdev.dev, "initialization failed\n"); |
502d5016 DE |
436 | return retval; |
437 | } | |
438 | ||
2aa72f3b AK |
439 | /* Suspend device - stop device. Need to be checked and fixed */ |
440 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) | |
441 | { | |
a2bdc5e6 | 442 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 443 | |
a682d4cb | 444 | mutex_lock(&radio->lock); |
85578b0f | 445 | if (!radio->muted) { |
4bd9ff19 HV |
446 | amradio_set_mute(radio, true); |
447 | radio->muted = false; | |
d8970e5f | 448 | } |
a682d4cb | 449 | mutex_unlock(&radio->lock); |
2aa72f3b | 450 | |
e60b022e | 451 | dev_info(&intf->dev, "going into suspend..\n"); |
2aa72f3b AK |
452 | return 0; |
453 | } | |
454 | ||
455 | /* Resume device - start device. Need to be checked and fixed */ | |
456 | static int usb_amradio_resume(struct usb_interface *intf) | |
457 | { | |
a2bdc5e6 | 458 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
2aa72f3b | 459 | |
a682d4cb | 460 | mutex_lock(&radio->lock); |
4bd9ff19 HV |
461 | amradio_set_stereo(radio, radio->stereo); |
462 | amradio_set_freq(radio, radio->curfreq); | |
2aa72f3b | 463 | |
16a72f41 | 464 | if (!radio->muted) |
4bd9ff19 | 465 | amradio_set_mute(radio, false); |
d8970e5f | 466 | |
a682d4cb HV |
467 | mutex_unlock(&radio->lock); |
468 | ||
e60b022e | 469 | dev_info(&intf->dev, "coming out of suspend..\n"); |
2aa72f3b AK |
470 | return 0; |
471 | } | |
472 | ||
85578b0f HV |
473 | static const struct v4l2_ctrl_ops usb_amradio_ctrl_ops = { |
474 | .s_ctrl = usb_amradio_s_ctrl, | |
475 | }; | |
476 | ||
2aa72f3b | 477 | /* File system interface */ |
bec43661 | 478 | static const struct v4l2_file_operations usb_amradio_fops = { |
2aa72f3b | 479 | .owner = THIS_MODULE, |
85578b0f HV |
480 | .open = v4l2_fh_open, |
481 | .release = v4l2_fh_release, | |
482 | .poll = v4l2_ctrl_poll, | |
361ae54f | 483 | .unlocked_ioctl = video_ioctl2, |
2aa72f3b AK |
484 | }; |
485 | ||
486 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { | |
487 | .vidioc_querycap = vidioc_querycap, | |
488 | .vidioc_g_tuner = vidioc_g_tuner, | |
489 | .vidioc_s_tuner = vidioc_s_tuner, | |
490 | .vidioc_g_frequency = vidioc_g_frequency, | |
491 | .vidioc_s_frequency = vidioc_s_frequency, | |
4bd9ff19 | 492 | .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, |
85578b0f HV |
493 | .vidioc_log_status = v4l2_ctrl_log_status, |
494 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
495 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
2aa72f3b AK |
496 | }; |
497 | ||
85578b0f | 498 | static void usb_amradio_release(struct v4l2_device *v4l2_dev) |
f4e9043e | 499 | { |
85578b0f | 500 | struct amradio_device *radio = to_amradio_dev(v4l2_dev); |
b466248d | 501 | |
f4e9043e | 502 | /* free rest memory */ |
85578b0f HV |
503 | v4l2_ctrl_handler_free(&radio->hdl); |
504 | v4l2_device_unregister(&radio->v4l2_dev); | |
f4e9043e AK |
505 | kfree(radio->buffer); |
506 | kfree(radio); | |
507 | } | |
508 | ||
a5d69475 | 509 | /* check if the device is present and register with v4l and usb if it is */ |
2aa72f3b AK |
510 | static int usb_amradio_probe(struct usb_interface *intf, |
511 | const struct usb_device_id *id) | |
512 | { | |
513 | struct amradio_device *radio; | |
1b8bbb3c | 514 | int retval = 0; |
2aa72f3b | 515 | |
b466248d | 516 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
2aa72f3b | 517 | |
8edafcc6 AK |
518 | if (!radio) { |
519 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); | |
1b8bbb3c DE |
520 | retval = -ENOMEM; |
521 | goto err; | |
8edafcc6 | 522 | } |
2aa72f3b AK |
523 | |
524 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); | |
525 | ||
8edafcc6 AK |
526 | if (!radio->buffer) { |
527 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); | |
1b8bbb3c DE |
528 | retval = -ENOMEM; |
529 | goto err_nobuf; | |
2aa72f3b AK |
530 | } |
531 | ||
d1939e4c | 532 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
b466248d AK |
533 | if (retval < 0) { |
534 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); | |
1b8bbb3c | 535 | goto err_v4l2; |
b466248d AK |
536 | } |
537 | ||
85578b0f HV |
538 | v4l2_ctrl_handler_init(&radio->hdl, 1); |
539 | v4l2_ctrl_new_std(&radio->hdl, &usb_amradio_ctrl_ops, | |
540 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
541 | if (radio->hdl.error) { | |
542 | retval = radio->hdl.error; | |
543 | dev_err(&intf->dev, "couldn't register control\n"); | |
544 | goto err_ctrl; | |
545 | } | |
361ae54f HV |
546 | mutex_init(&radio->lock); |
547 | ||
85578b0f HV |
548 | radio->v4l2_dev.ctrl_handler = &radio->hdl; |
549 | radio->v4l2_dev.release = usb_amradio_release; | |
550 | strlcpy(radio->vdev.name, radio->v4l2_dev.name, | |
551 | sizeof(radio->vdev.name)); | |
552 | radio->vdev.v4l2_dev = &radio->v4l2_dev; | |
553 | radio->vdev.fops = &usb_amradio_fops; | |
554 | radio->vdev.ioctl_ops = &usb_amradio_ioctl_ops; | |
555 | radio->vdev.release = video_device_release_empty; | |
556 | radio->vdev.lock = &radio->lock; | |
2aa72f3b | 557 | |
2aa72f3b | 558 | radio->usbdev = interface_to_usbdev(intf); |
d89ce0d9 | 559 | radio->intf = intf; |
85578b0f | 560 | usb_set_intfdata(intf, &radio->v4l2_dev); |
2aa72f3b AK |
561 | radio->curfreq = 95.16 * FREQ_MUL; |
562 | ||
85578b0f HV |
563 | video_set_drvdata(&radio->vdev, radio); |
564 | retval = usb_amradio_init(radio); | |
565 | if (retval) | |
566 | goto err_vdev; | |
b466248d | 567 | |
85578b0f | 568 | retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, |
7a7d92e0 | 569 | radio_nr); |
a5d69475 | 570 | if (retval < 0) { |
65c51dc9 | 571 | dev_err(&intf->dev, "could not register video device\n"); |
1b8bbb3c | 572 | goto err_vdev; |
2aa72f3b AK |
573 | } |
574 | ||
2aa72f3b | 575 | return 0; |
1b8bbb3c DE |
576 | |
577 | err_vdev: | |
85578b0f HV |
578 | v4l2_ctrl_handler_free(&radio->hdl); |
579 | err_ctrl: | |
d1939e4c | 580 | v4l2_device_unregister(&radio->v4l2_dev); |
1b8bbb3c DE |
581 | err_v4l2: |
582 | kfree(radio->buffer); | |
583 | err_nobuf: | |
584 | kfree(radio); | |
585 | err: | |
586 | return retval; | |
2aa72f3b AK |
587 | } |
588 | ||
85578b0f HV |
589 | /* USB Device ID List */ |
590 | static struct usb_device_id usb_amradio_device_table[] = { | |
591 | { USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, | |
592 | USB_CLASS_HID, 0, 0) }, | |
593 | { } /* Terminating entry */ | |
594 | }; | |
595 | ||
596 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); | |
597 | ||
598 | /* USB subsystem interface */ | |
599 | static struct usb_driver usb_amradio_driver = { | |
600 | .name = MR800_DRIVER_NAME, | |
601 | .probe = usb_amradio_probe, | |
602 | .disconnect = usb_amradio_disconnect, | |
603 | .suspend = usb_amradio_suspend, | |
604 | .resume = usb_amradio_resume, | |
605 | .reset_resume = usb_amradio_resume, | |
606 | .id_table = usb_amradio_device_table, | |
607 | }; | |
608 | ||
ecb3b2b3 | 609 | module_usb_driver(usb_amradio_driver); |