Lines Matching refs:radio
3 * A driver for the AverMedia MR 800 USB FM radio. This device plugs
12 * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c
20 * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio
21 * in 2007. He allowed to use his driver to improve current mr800 radio driver.
59 #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver"
71 #define MR800_DRIVER_NAME "radio-mr800"
135 static int amradio_send_cmd(struct amradio_device *radio, u8 cmd, u8 arg,
141 radio->buffer[0] = 0x00;
142 radio->buffer[1] = 0x55;
143 radio->buffer[2] = 0xaa;
144 radio->buffer[3] = extralen;
145 radio->buffer[4] = cmd;
146 radio->buffer[5] = arg;
147 radio->buffer[6] = 0x00;
148 radio->buffer[7] = extra || reply ? 8 : 0;
150 retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
151 radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
154 if (video_is_registered(&radio->vdev))
155 amradio_dev_warn(&radio->vdev.dev,
163 memcpy(radio->buffer, extra, extralen);
164 memset(radio->buffer + extralen, 0, 8 - extralen);
165 retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
166 radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
168 memset(radio->buffer, 0, 8);
169 retval = usb_bulk_msg(radio->usbdev, usb_rcvbulkpipe(radio->usbdev, 0x81),
170 radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
174 if (video_is_registered(&radio->vdev) && cmd != AMRADIO_GET_READY_FLAG)
175 amradio_dev_warn(&radio->vdev.dev, "follow-up to cmd %02x failed\n", cmd);
179 /* switch on/off the radio. Send 8 bytes to device */
180 static int amradio_set_mute(struct amradio_device *radio, bool mute)
182 int ret = amradio_send_cmd(radio,
186 radio->muted = mute;
191 static int amradio_set_freq(struct amradio_device *radio, int freq)
206 retval = amradio_send_cmd(radio, AMRADIO_SET_FREQ, 0, buf, 3, false);
209 radio->curfreq = freq;
214 static int amradio_set_stereo(struct amradio_device *radio, bool stereo)
216 int ret = amradio_send_cmd(radio,
220 radio->stereo = stereo;
224 static int amradio_get_stat(struct amradio_device *radio, bool *is_stereo, u32 *signal)
226 int ret = amradio_send_cmd(radio,
231 *is_stereo = radio->buffer[2] >> 7;
232 *signal = (radio->buffer[3] & 0xf0) << 8;
243 struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
245 mutex_lock(&radio->lock);
246 video_unregister_device(&radio->vdev);
247 amradio_set_mute(radio, true);
249 v4l2_device_disconnect(&radio->v4l2_dev);
250 mutex_unlock(&radio->lock);
251 v4l2_device_put(&radio->v4l2_dev);
258 struct amradio_device *radio = video_drvdata(file);
260 strscpy(v->driver, "radio-mr800", sizeof(v->driver));
262 usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
270 struct amradio_device *radio = video_drvdata(file);
278 retval = amradio_get_stat(radio, &is_stereo, &v->signal);
289 v->audmode = radio->stereo ?
298 struct amradio_device *radio = video_drvdata(file);
306 return amradio_set_stereo(radio, WANT_MONO);
308 return amradio_set_stereo(radio, WANT_STEREO);
312 /* vidioc_s_frequency - set tuner radio frequency */
316 struct amradio_device *radio = video_drvdata(file);
320 return amradio_set_freq(radio, f->frequency);
323 /* vidioc_g_frequency - get tuner radio frequency */
327 struct amradio_device *radio = video_drvdata(file);
332 f->frequency = radio->curfreq;
343 struct amradio_device *radio = video_drvdata(file);
353 retval = amradio_send_cmd(radio,
357 amradio_set_freq(radio, radio->curfreq);
358 retval = amradio_send_cmd(radio,
373 retval = amradio_send_cmd(radio, AMRADIO_GET_READY_FLAG,
377 amradio_send_cmd(radio, AMRADIO_GET_FREQ, 0, NULL, 0, true);
378 if (radio->buffer[1] || radio->buffer[2]) {
379 /* To check: sometimes radio->curfreq is set to out of range value */
380 radio->curfreq = (radio->buffer[1] << 8) | radio->buffer[2];
381 radio->curfreq = (radio->curfreq - 0x10) * 200;
382 amradio_send_cmd(radio, AMRADIO_STOP_SEARCH,
384 amradio_set_freq(radio, radio->curfreq);
389 amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, 0, NULL, 0, false);
390 amradio_set_freq(radio, radio->curfreq);
396 struct amradio_device *radio =
401 return amradio_set_mute(radio, ctrl->val);
407 static int usb_amradio_init(struct amradio_device *radio)
411 retval = amradio_set_mute(radio, true);
414 retval = amradio_set_stereo(radio, true);
417 retval = amradio_set_freq(radio, radio->curfreq);
423 amradio_dev_err(&radio->vdev.dev, "initialization failed\n");
430 struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
432 mutex_lock(&radio->lock);
433 if (!radio->muted) {
434 amradio_set_mute(radio, true);
435 radio->muted = false;
437 mutex_unlock(&radio->lock);
446 struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
448 mutex_lock(&radio->lock);
449 amradio_set_stereo(radio, radio->stereo);
450 amradio_set_freq(radio, radio->curfreq);
452 if (!radio->muted)
453 amradio_set_mute(radio, false);
455 mutex_unlock(&radio->lock);
488 struct amradio_device *radio = to_amradio_dev(v4l2_dev);
491 v4l2_ctrl_handler_free(&radio->hdl);
492 v4l2_device_unregister(&radio->v4l2_dev);
493 kfree(radio->buffer);
494 kfree(radio);
501 struct amradio_device *radio;
504 radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
506 if (!radio) {
512 radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
514 if (!radio->buffer) {
515 dev_err(&intf->dev, "kmalloc for radio->buffer failed\n");
520 retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);
526 v4l2_ctrl_handler_init(&radio->hdl, 1);
527 v4l2_ctrl_new_std(&radio->hdl, &usb_amradio_ctrl_ops,
529 if (radio->hdl.error) {
530 retval = radio->hdl.error;
534 mutex_init(&radio->lock);
536 radio->v4l2_dev.ctrl_handler = &radio->hdl;
537 radio->v4l2_dev.release = usb_amradio_release;
538 strscpy(radio->vdev.name, radio->v4l2_dev.name,
539 sizeof(radio->vdev.name));
540 radio->vdev.v4l2_dev = &radio->v4l2_dev;
541 radio->vdev.fops = &usb_amradio_fops;
542 radio->vdev.ioctl_ops = &usb_amradio_ioctl_ops;
543 radio->vdev.release = video_device_release_empty;
544 radio->vdev.lock = &radio->lock;
545 radio->vdev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER |
548 radio->usbdev = interface_to_usbdev(intf);
549 radio->intf = intf;
550 usb_set_intfdata(intf, &radio->v4l2_dev);
551 radio->curfreq = 95.16 * FREQ_MUL;
553 video_set_drvdata(&radio->vdev, radio);
554 retval = usb_amradio_init(radio);
558 retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO,
568 v4l2_ctrl_handler_free(&radio->hdl);
570 v4l2_device_unregister(&radio->v4l2_dev);
572 kfree(radio->buffer);
574 kfree(radio);