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1 | /* |
2 | * FM Driver for Connectivity chip of Texas Instruments. | |
3 | * This file provides interfaces to V4L2 subsystem. | |
4 | * | |
5 | * This module registers with V4L2 subsystem as Radio | |
6 | * data system interface (/dev/radio). During the registration, | |
7 | * it will expose two set of function pointers. | |
8 | * | |
9 | * 1) File operation related API (open, close, read, write, poll...etc). | |
10 | * 2) Set of V4L2 IOCTL complaint API. | |
11 | * | |
12 | * Copyright (C) 2011 Texas Instruments | |
13 | * Author: Raja Mani <raja_mani@ti.com> | |
14 | * Author: Manjunatha Halli <manjunatha_halli@ti.com> | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License version 2 as | |
18 | * published by the Free Software Foundation. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
28 | * | |
29 | */ | |
30 | ||
31 | #include "fmdrv.h" | |
32 | #include "fmdrv_v4l2.h" | |
33 | #include "fmdrv_common.h" | |
34 | #include "fmdrv_rx.h" | |
35 | #include "fmdrv_tx.h" | |
36 | ||
37 | static struct video_device *gradio_dev; | |
38 | static u8 radio_disconnected; | |
39 | ||
40 | /* -- V4L2 RADIO (/dev/radioX) device file operation interfaces --- */ | |
41 | ||
42 | /* Read RX RDS data */ | |
43 | static ssize_t fm_v4l2_fops_read(struct file *file, char __user * buf, | |
44 | size_t count, loff_t *ppos) | |
45 | { | |
46 | u8 rds_mode; | |
47 | int ret; | |
48 | struct fmdev *fmdev; | |
49 | ||
50 | fmdev = video_drvdata(file); | |
51 | ||
52 | if (!radio_disconnected) { | |
53 | fmerr("FM device is already disconnected\n"); | |
54 | return -EIO; | |
55 | } | |
56 | ||
57 | /* Turn on RDS mode , if it is disabled */ | |
58 | ret = fm_rx_get_rds_mode(fmdev, &rds_mode); | |
59 | if (ret < 0) { | |
60 | fmerr("Unable to read current rds mode\n"); | |
61 | return ret; | |
62 | } | |
63 | ||
64 | if (rds_mode == FM_RDS_DISABLE) { | |
65 | ret = fmc_set_rds_mode(fmdev, FM_RDS_ENABLE); | |
66 | if (ret < 0) { | |
67 | fmerr("Failed to enable rds mode\n"); | |
68 | return ret; | |
69 | } | |
70 | } | |
71 | ||
72 | /* Copy RDS data from internal buffer to user buffer */ | |
73 | return fmc_transfer_rds_from_internal_buff(fmdev, file, buf, count); | |
74 | } | |
75 | ||
76 | /* Write TX RDS data */ | |
77 | static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf, | |
78 | size_t count, loff_t *ppos) | |
79 | { | |
80 | struct tx_rds rds; | |
81 | int ret; | |
82 | struct fmdev *fmdev; | |
83 | ||
84 | ret = copy_from_user(&rds, buf, sizeof(rds)); | |
85 | fmdbg("(%d)type: %d, text %s, af %d\n", | |
86 | ret, rds.text_type, rds.text, rds.af_freq); | |
87 | ||
88 | fmdev = video_drvdata(file); | |
89 | fm_tx_set_radio_text(fmdev, rds.text, rds.text_type); | |
90 | fm_tx_set_af(fmdev, rds.af_freq); | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static u32 fm_v4l2_fops_poll(struct file *file, struct poll_table_struct *pts) | |
96 | { | |
97 | int ret; | |
98 | struct fmdev *fmdev; | |
99 | ||
100 | fmdev = video_drvdata(file); | |
101 | ret = fmc_is_rds_data_available(fmdev, file, pts); | |
102 | if (ret < 0) | |
103 | return POLLIN | POLLRDNORM; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | /* | |
109 | * Handle open request for "/dev/radioX" device. | |
110 | * Start with FM RX mode as default. | |
111 | */ | |
112 | static int fm_v4l2_fops_open(struct file *file) | |
113 | { | |
114 | int ret; | |
115 | struct fmdev *fmdev = NULL; | |
116 | ||
117 | /* Don't allow multiple open */ | |
118 | if (radio_disconnected) { | |
119 | fmerr("FM device is already opened\n"); | |
120 | return -EBUSY; | |
121 | } | |
122 | ||
123 | fmdev = video_drvdata(file); | |
124 | ||
125 | ret = fmc_prepare(fmdev); | |
126 | if (ret < 0) { | |
127 | fmerr("Unable to prepare FM CORE\n"); | |
128 | return ret; | |
129 | } | |
130 | ||
131 | fmdbg("Load FM RX firmware..\n"); | |
132 | ||
133 | ret = fmc_set_mode(fmdev, FM_MODE_RX); | |
134 | if (ret < 0) { | |
135 | fmerr("Unable to load FM RX firmware\n"); | |
136 | return ret; | |
137 | } | |
138 | radio_disconnected = 1; | |
139 | ||
140 | return ret; | |
141 | } | |
142 | ||
143 | static int fm_v4l2_fops_release(struct file *file) | |
144 | { | |
145 | int ret; | |
146 | struct fmdev *fmdev; | |
147 | ||
148 | fmdev = video_drvdata(file); | |
149 | if (!radio_disconnected) { | |
150 | fmdbg("FM device is already closed\n"); | |
151 | return 0; | |
152 | } | |
153 | ||
154 | ret = fmc_set_mode(fmdev, FM_MODE_OFF); | |
155 | if (ret < 0) { | |
156 | fmerr("Unable to turn off the chip\n"); | |
157 | return ret; | |
158 | } | |
159 | ||
160 | ret = fmc_release(fmdev); | |
161 | if (ret < 0) { | |
162 | fmerr("FM CORE release failed\n"); | |
163 | return ret; | |
164 | } | |
165 | radio_disconnected = 0; | |
166 | ||
167 | return ret; | |
168 | } | |
169 | ||
170 | /* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */ | |
171 | static int fm_v4l2_vidioc_querycap(struct file *file, void *priv, | |
172 | struct v4l2_capability *capability) | |
173 | { | |
174 | strlcpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver)); | |
175 | strlcpy(capability->card, FM_DRV_CARD_SHORT_NAME, | |
176 | sizeof(capability->card)); | |
177 | sprintf(capability->bus_info, "UART"); | |
178 | capability->version = FM_DRV_RADIO_VERSION; | |
179 | capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER | | |
180 | V4L2_CAP_RADIO | V4L2_CAP_MODULATOR | | |
181 | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | | |
182 | V4L2_CAP_RDS_CAPTURE; | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | static int fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) | |
188 | { | |
189 | struct fmdev *fmdev = container_of(ctrl->handler, | |
190 | struct fmdev, ctrl_handler); | |
191 | ||
192 | switch (ctrl->id) { | |
193 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: | |
194 | ctrl->val = fm_tx_get_tune_cap_val(fmdev); | |
195 | break; | |
196 | default: | |
197 | fmwarn("%s: Unknown IOCTL: %d\n", __func__, ctrl->id); | |
198 | break; | |
199 | } | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl) | |
205 | { | |
206 | struct fmdev *fmdev = container_of(ctrl->handler, | |
207 | struct fmdev, ctrl_handler); | |
208 | ||
209 | switch (ctrl->id) { | |
210 | case V4L2_CID_AUDIO_VOLUME: /* set volume */ | |
211 | return fm_rx_set_volume(fmdev, (u16)ctrl->val); | |
212 | ||
213 | case V4L2_CID_AUDIO_MUTE: /* set mute */ | |
214 | return fmc_set_mute_mode(fmdev, (u8)ctrl->val); | |
215 | ||
216 | case V4L2_CID_TUNE_POWER_LEVEL: | |
217 | /* set TX power level - ext control */ | |
218 | return fm_tx_set_pwr_lvl(fmdev, (u8)ctrl->val); | |
219 | ||
220 | case V4L2_CID_TUNE_PREEMPHASIS: | |
221 | return fm_tx_set_preemph_filter(fmdev, (u8) ctrl->val); | |
222 | ||
223 | default: | |
224 | return -EINVAL; | |
225 | } | |
226 | } | |
227 | ||
228 | static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv, | |
229 | struct v4l2_audio *audio) | |
230 | { | |
231 | memset(audio, 0, sizeof(*audio)); | |
232 | strcpy(audio->name, "Radio"); | |
233 | audio->capability = V4L2_AUDCAP_STEREO; | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv, | |
239 | struct v4l2_audio *audio) | |
240 | { | |
241 | if (audio->index != 0) | |
242 | return -EINVAL; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | /* Get tuner attributes. If current mode is NOT RX, return error */ | |
248 | static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv, | |
249 | struct v4l2_tuner *tuner) | |
250 | { | |
251 | struct fmdev *fmdev = video_drvdata(file); | |
252 | u32 bottom_freq; | |
253 | u32 top_freq; | |
254 | u16 stereo_mono_mode; | |
255 | u16 rssilvl; | |
256 | int ret; | |
257 | ||
258 | if (tuner->index != 0) | |
259 | return -EINVAL; | |
260 | ||
261 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
262 | return -EPERM; | |
263 | ||
264 | ret = fm_rx_get_band_freq_range(fmdev, &bottom_freq, &top_freq); | |
265 | if (ret != 0) | |
266 | return ret; | |
267 | ||
268 | ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode); | |
269 | if (ret != 0) | |
270 | return ret; | |
271 | ||
272 | ret = fm_rx_get_rssi_level(fmdev, &rssilvl); | |
273 | if (ret != 0) | |
274 | return ret; | |
275 | ||
276 | strcpy(tuner->name, "FM"); | |
277 | tuner->type = V4L2_TUNER_RADIO; | |
278 | /* Store rangelow and rangehigh freq in unit of 62.5 Hz */ | |
279 | tuner->rangelow = bottom_freq * 16; | |
280 | tuner->rangehigh = top_freq * 16; | |
281 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO | | |
282 | ((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0); | |
283 | tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | | |
284 | V4L2_TUNER_CAP_LOW; | |
285 | tuner->audmode = (stereo_mono_mode ? | |
286 | V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO); | |
287 | ||
288 | /* | |
289 | * Actual rssi value lies in between -128 to +127. | |
290 | * Convert this range from 0 to 255 by adding +128 | |
291 | */ | |
292 | rssilvl += 128; | |
293 | ||
294 | /* | |
295 | * Return signal strength value should be within 0 to 65535. | |
296 | * Find out correct signal radio by multiplying (65535/255) = 257 | |
297 | */ | |
298 | tuner->signal = rssilvl * 257; | |
299 | tuner->afc = 0; | |
300 | ||
301 | return ret; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Set tuner attributes. If current mode is NOT RX, set to RX. | |
306 | * Currently, we set only audio mode (mono/stereo) and RDS state (on/off). | |
307 | * Should we set other tuner attributes, too? | |
308 | */ | |
309 | static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv, | |
310 | struct v4l2_tuner *tuner) | |
311 | { | |
312 | struct fmdev *fmdev = video_drvdata(file); | |
313 | u16 aud_mode; | |
314 | u8 rds_mode; | |
315 | int ret; | |
316 | ||
317 | if (tuner->index != 0) | |
318 | return -EINVAL; | |
319 | ||
320 | aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ? | |
321 | FM_STEREO_MODE : FM_MONO_MODE; | |
322 | rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ? | |
323 | FM_RDS_ENABLE : FM_RDS_DISABLE; | |
324 | ||
325 | if (fmdev->curr_fmmode != FM_MODE_RX) { | |
326 | ret = fmc_set_mode(fmdev, FM_MODE_RX); | |
327 | if (ret < 0) { | |
328 | fmerr("Failed to set RX mode\n"); | |
329 | return ret; | |
330 | } | |
331 | } | |
332 | ||
333 | ret = fmc_set_stereo_mono(fmdev, aud_mode); | |
334 | if (ret < 0) { | |
335 | fmerr("Failed to set RX stereo/mono mode\n"); | |
336 | return ret; | |
337 | } | |
338 | ||
339 | ret = fmc_set_rds_mode(fmdev, rds_mode); | |
340 | if (ret < 0) | |
341 | fmerr("Failed to set RX RDS mode\n"); | |
342 | ||
343 | return ret; | |
344 | } | |
345 | ||
346 | /* Get tuner or modulator radio frequency */ | |
347 | static int fm_v4l2_vidioc_g_freq(struct file *file, void *priv, | |
348 | struct v4l2_frequency *freq) | |
349 | { | |
350 | struct fmdev *fmdev = video_drvdata(file); | |
351 | int ret; | |
352 | ||
353 | ret = fmc_get_freq(fmdev, &freq->frequency); | |
354 | if (ret < 0) { | |
355 | fmerr("Failed to get frequency\n"); | |
356 | return ret; | |
357 | } | |
358 | ||
359 | /* Frequency unit of 62.5 Hz*/ | |
360 | freq->frequency = (u32) freq->frequency * 16; | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | /* Set tuner or modulator radio frequency */ | |
366 | static int fm_v4l2_vidioc_s_freq(struct file *file, void *priv, | |
367 | struct v4l2_frequency *freq) | |
368 | { | |
369 | struct fmdev *fmdev = video_drvdata(file); | |
370 | ||
371 | /* | |
372 | * As V4L2_TUNER_CAP_LOW is set 1 user sends the frequency | |
373 | * in units of 62.5 Hz. | |
374 | */ | |
375 | freq->frequency = (u32)(freq->frequency / 16); | |
376 | ||
377 | return fmc_set_freq(fmdev, freq->frequency); | |
378 | } | |
379 | ||
380 | /* Set hardware frequency seek. If current mode is NOT RX, set it RX. */ | |
381 | static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv, | |
382 | struct v4l2_hw_freq_seek *seek) | |
383 | { | |
384 | struct fmdev *fmdev = video_drvdata(file); | |
385 | int ret; | |
386 | ||
387 | if (fmdev->curr_fmmode != FM_MODE_RX) { | |
388 | ret = fmc_set_mode(fmdev, FM_MODE_RX); | |
389 | if (ret != 0) { | |
390 | fmerr("Failed to set RX mode\n"); | |
391 | return ret; | |
392 | } | |
393 | } | |
394 | ||
395 | ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around, | |
396 | seek->spacing); | |
397 | if (ret < 0) | |
398 | fmerr("RX seek failed - %d\n", ret); | |
399 | ||
400 | return ret; | |
401 | } | |
402 | /* Get modulator attributes. If mode is not TX, return no attributes. */ | |
403 | static int fm_v4l2_vidioc_g_modulator(struct file *file, void *priv, | |
404 | struct v4l2_modulator *mod) | |
405 | { | |
406 | struct fmdev *fmdev = video_drvdata(file);; | |
407 | ||
408 | if (mod->index != 0) | |
409 | return -EINVAL; | |
410 | ||
411 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
412 | return -EPERM; | |
413 | ||
414 | mod->txsubchans = ((fmdev->tx_data.aud_mode == FM_STEREO_MODE) ? | |
415 | V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO) | | |
416 | ((fmdev->tx_data.rds.flag == FM_RDS_ENABLE) ? | |
417 | V4L2_TUNER_SUB_RDS : 0); | |
418 | ||
419 | mod->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | | |
420 | V4L2_TUNER_CAP_LOW; | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | /* Set modulator attributes. If mode is not TX, set to TX. */ | |
426 | static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv, | |
427 | struct v4l2_modulator *mod) | |
428 | { | |
429 | struct fmdev *fmdev = video_drvdata(file); | |
430 | u8 rds_mode; | |
431 | u16 aud_mode; | |
432 | int ret; | |
433 | ||
434 | if (mod->index != 0) | |
435 | return -EINVAL; | |
436 | ||
437 | if (fmdev->curr_fmmode != FM_MODE_TX) { | |
438 | ret = fmc_set_mode(fmdev, FM_MODE_TX); | |
439 | if (ret != 0) { | |
440 | fmerr("Failed to set TX mode\n"); | |
441 | return ret; | |
442 | } | |
443 | } | |
444 | ||
445 | aud_mode = (mod->txsubchans & V4L2_TUNER_SUB_STEREO) ? | |
446 | FM_STEREO_MODE : FM_MONO_MODE; | |
447 | rds_mode = (mod->txsubchans & V4L2_TUNER_SUB_RDS) ? | |
448 | FM_RDS_ENABLE : FM_RDS_DISABLE; | |
449 | ret = fm_tx_set_stereo_mono(fmdev, aud_mode); | |
450 | if (ret < 0) { | |
451 | fmerr("Failed to set mono/stereo mode for TX\n"); | |
452 | return ret; | |
453 | } | |
454 | ret = fm_tx_set_rds_mode(fmdev, rds_mode); | |
455 | if (ret < 0) | |
456 | fmerr("Failed to set rds mode for TX\n"); | |
457 | ||
458 | return ret; | |
459 | } | |
460 | ||
461 | static const struct v4l2_file_operations fm_drv_fops = { | |
462 | .owner = THIS_MODULE, | |
463 | .read = fm_v4l2_fops_read, | |
464 | .write = fm_v4l2_fops_write, | |
465 | .poll = fm_v4l2_fops_poll, | |
466 | .unlocked_ioctl = video_ioctl2, | |
467 | .open = fm_v4l2_fops_open, | |
468 | .release = fm_v4l2_fops_release, | |
469 | }; | |
470 | ||
471 | static const struct v4l2_ctrl_ops fm_ctrl_ops = { | |
472 | .s_ctrl = fm_v4l2_s_ctrl, | |
473 | .g_volatile_ctrl = fm_g_volatile_ctrl, | |
474 | }; | |
475 | static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = { | |
476 | .vidioc_querycap = fm_v4l2_vidioc_querycap, | |
477 | .vidioc_g_audio = fm_v4l2_vidioc_g_audio, | |
478 | .vidioc_s_audio = fm_v4l2_vidioc_s_audio, | |
479 | .vidioc_g_tuner = fm_v4l2_vidioc_g_tuner, | |
480 | .vidioc_s_tuner = fm_v4l2_vidioc_s_tuner, | |
481 | .vidioc_g_frequency = fm_v4l2_vidioc_g_freq, | |
482 | .vidioc_s_frequency = fm_v4l2_vidioc_s_freq, | |
483 | .vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek, | |
484 | .vidioc_g_modulator = fm_v4l2_vidioc_g_modulator, | |
485 | .vidioc_s_modulator = fm_v4l2_vidioc_s_modulator | |
486 | }; | |
487 | ||
488 | /* V4L2 RADIO device parent structure */ | |
489 | static struct video_device fm_viddev_template = { | |
490 | .fops = &fm_drv_fops, | |
491 | .ioctl_ops = &fm_drv_ioctl_ops, | |
492 | .name = FM_DRV_NAME, | |
493 | .release = video_device_release, | |
494 | }; | |
495 | ||
496 | int fm_v4l2_init_video_device(struct fmdev *fmdev, int radio_nr) | |
497 | { | |
498 | struct v4l2_ctrl *ctrl; | |
499 | int ret; | |
500 | ||
501 | /* Init mutex for core locking */ | |
502 | mutex_init(&fmdev->mutex); | |
503 | ||
504 | /* Allocate new video device */ | |
505 | gradio_dev = video_device_alloc(); | |
506 | if (NULL == gradio_dev) { | |
507 | fmerr("Can't allocate video device\n"); | |
508 | return -ENOMEM; | |
509 | } | |
510 | ||
511 | /* Setup FM driver's V4L2 properties */ | |
512 | memcpy(gradio_dev, &fm_viddev_template, sizeof(fm_viddev_template)); | |
513 | ||
514 | video_set_drvdata(gradio_dev, fmdev); | |
515 | ||
516 | gradio_dev->lock = &fmdev->mutex; | |
517 | ||
518 | /* Register with V4L2 subsystem as RADIO device */ | |
519 | if (video_register_device(gradio_dev, VFL_TYPE_RADIO, radio_nr)) { | |
520 | video_device_release(gradio_dev); | |
521 | fmerr("Could not register video device\n"); | |
522 | return -ENOMEM; | |
523 | } | |
524 | ||
525 | fmdev->radio_dev = gradio_dev; | |
526 | ||
527 | /* Register to v4l2 ctrl handler framework */ | |
528 | fmdev->radio_dev->ctrl_handler = &fmdev->ctrl_handler; | |
529 | ||
530 | ret = v4l2_ctrl_handler_init(&fmdev->ctrl_handler, 5); | |
531 | if (ret < 0) { | |
532 | fmerr("(fmdev): Can't init ctrl handler\n"); | |
533 | v4l2_ctrl_handler_free(&fmdev->ctrl_handler); | |
534 | return -EBUSY; | |
535 | } | |
536 | ||
537 | /* | |
538 | * Following controls are handled by V4L2 control framework. | |
539 | * Added in ascending ID order. | |
540 | */ | |
541 | v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
542 | V4L2_CID_AUDIO_VOLUME, FM_RX_VOLUME_MIN, | |
543 | FM_RX_VOLUME_MAX, 1, FM_RX_VOLUME_MAX); | |
544 | ||
545 | v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
546 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
547 | ||
548 | v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
549 | V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS, | |
550 | 0, V4L2_PREEMPHASIS_75_uS); | |
551 | ||
552 | v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
553 | V4L2_CID_TUNE_POWER_LEVEL, FM_PWR_LVL_LOW, | |
554 | FM_PWR_LVL_HIGH, 1, FM_PWR_LVL_HIGH); | |
555 | ||
556 | ctrl = v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
557 | V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, | |
558 | 255, 1, 255); | |
559 | ||
560 | if (ctrl) | |
561 | ctrl->is_volatile = 1; | |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | void *fm_v4l2_deinit_video_device(void) | |
567 | { | |
568 | struct fmdev *fmdev; | |
569 | ||
570 | ||
571 | fmdev = video_get_drvdata(gradio_dev); | |
572 | ||
573 | /* Unregister to v4l2 ctrl handler framework*/ | |
574 | v4l2_ctrl_handler_free(&fmdev->ctrl_handler); | |
575 | ||
576 | /* Unregister RADIO device from V4L2 subsystem */ | |
577 | video_unregister_device(gradio_dev); | |
578 | ||
579 | return fmdev; | |
580 | } |