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7e388496 MH |
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); | |
eb70ac1b HV |
87 | if (ret) |
88 | return -EFAULT; | |
7e388496 MH |
89 | |
90 | fmdev = video_drvdata(file); | |
91 | fm_tx_set_radio_text(fmdev, rds.text, rds.text_type); | |
92 | fm_tx_set_af(fmdev, rds.af_freq); | |
93 | ||
eb70ac1b | 94 | return sizeof(rds); |
7e388496 MH |
95 | } |
96 | ||
97 | static u32 fm_v4l2_fops_poll(struct file *file, struct poll_table_struct *pts) | |
98 | { | |
99 | int ret; | |
100 | struct fmdev *fmdev; | |
101 | ||
102 | fmdev = video_drvdata(file); | |
103 | ret = fmc_is_rds_data_available(fmdev, file, pts); | |
104 | if (ret < 0) | |
105 | return POLLIN | POLLRDNORM; | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | /* | |
111 | * Handle open request for "/dev/radioX" device. | |
112 | * Start with FM RX mode as default. | |
113 | */ | |
114 | static int fm_v4l2_fops_open(struct file *file) | |
115 | { | |
116 | int ret; | |
117 | struct fmdev *fmdev = NULL; | |
118 | ||
119 | /* Don't allow multiple open */ | |
120 | if (radio_disconnected) { | |
121 | fmerr("FM device is already opened\n"); | |
122 | return -EBUSY; | |
123 | } | |
124 | ||
125 | fmdev = video_drvdata(file); | |
126 | ||
127 | ret = fmc_prepare(fmdev); | |
128 | if (ret < 0) { | |
129 | fmerr("Unable to prepare FM CORE\n"); | |
130 | return ret; | |
131 | } | |
132 | ||
133 | fmdbg("Load FM RX firmware..\n"); | |
134 | ||
135 | ret = fmc_set_mode(fmdev, FM_MODE_RX); | |
136 | if (ret < 0) { | |
137 | fmerr("Unable to load FM RX firmware\n"); | |
138 | return ret; | |
139 | } | |
140 | radio_disconnected = 1; | |
141 | ||
142 | return ret; | |
143 | } | |
144 | ||
145 | static int fm_v4l2_fops_release(struct file *file) | |
146 | { | |
147 | int ret; | |
148 | struct fmdev *fmdev; | |
149 | ||
150 | fmdev = video_drvdata(file); | |
151 | if (!radio_disconnected) { | |
152 | fmdbg("FM device is already closed\n"); | |
153 | return 0; | |
154 | } | |
155 | ||
156 | ret = fmc_set_mode(fmdev, FM_MODE_OFF); | |
157 | if (ret < 0) { | |
158 | fmerr("Unable to turn off the chip\n"); | |
159 | return ret; | |
160 | } | |
161 | ||
162 | ret = fmc_release(fmdev); | |
163 | if (ret < 0) { | |
164 | fmerr("FM CORE release failed\n"); | |
165 | return ret; | |
166 | } | |
167 | radio_disconnected = 0; | |
168 | ||
169 | return ret; | |
170 | } | |
171 | ||
172 | /* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */ | |
173 | static int fm_v4l2_vidioc_querycap(struct file *file, void *priv, | |
174 | struct v4l2_capability *capability) | |
175 | { | |
176 | strlcpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver)); | |
177 | strlcpy(capability->card, FM_DRV_CARD_SHORT_NAME, | |
178 | sizeof(capability->card)); | |
179 | sprintf(capability->bus_info, "UART"); | |
7e388496 MH |
180 | capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER | |
181 | V4L2_CAP_RADIO | V4L2_CAP_MODULATOR | | |
182 | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | | |
183 | V4L2_CAP_RDS_CAPTURE; | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | static int fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl) | |
189 | { | |
190 | struct fmdev *fmdev = container_of(ctrl->handler, | |
191 | struct fmdev, ctrl_handler); | |
192 | ||
193 | switch (ctrl->id) { | |
194 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: | |
ddac5c10 | 195 | ctrl->val = fm_tx_get_tune_cap_val(fmdev); |
7e388496 MH |
196 | break; |
197 | default: | |
198 | fmwarn("%s: Unknown IOCTL: %d\n", __func__, ctrl->id); | |
199 | break; | |
200 | } | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
205 | static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl) | |
206 | { | |
207 | struct fmdev *fmdev = container_of(ctrl->handler, | |
208 | struct fmdev, ctrl_handler); | |
209 | ||
210 | switch (ctrl->id) { | |
211 | case V4L2_CID_AUDIO_VOLUME: /* set volume */ | |
212 | return fm_rx_set_volume(fmdev, (u16)ctrl->val); | |
213 | ||
214 | case V4L2_CID_AUDIO_MUTE: /* set mute */ | |
215 | return fmc_set_mute_mode(fmdev, (u8)ctrl->val); | |
216 | ||
217 | case V4L2_CID_TUNE_POWER_LEVEL: | |
218 | /* set TX power level - ext control */ | |
219 | return fm_tx_set_pwr_lvl(fmdev, (u8)ctrl->val); | |
220 | ||
221 | case V4L2_CID_TUNE_PREEMPHASIS: | |
222 | return fm_tx_set_preemph_filter(fmdev, (u8) ctrl->val); | |
223 | ||
224 | default: | |
225 | return -EINVAL; | |
226 | } | |
227 | } | |
228 | ||
229 | static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv, | |
230 | struct v4l2_audio *audio) | |
231 | { | |
232 | memset(audio, 0, sizeof(*audio)); | |
233 | strcpy(audio->name, "Radio"); | |
234 | audio->capability = V4L2_AUDCAP_STEREO; | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv, | |
240 | struct v4l2_audio *audio) | |
241 | { | |
242 | if (audio->index != 0) | |
243 | return -EINVAL; | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | /* Get tuner attributes. If current mode is NOT RX, return error */ | |
249 | static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv, | |
250 | struct v4l2_tuner *tuner) | |
251 | { | |
252 | struct fmdev *fmdev = video_drvdata(file); | |
253 | u32 bottom_freq; | |
254 | u32 top_freq; | |
255 | u16 stereo_mono_mode; | |
256 | u16 rssilvl; | |
257 | int ret; | |
258 | ||
259 | if (tuner->index != 0) | |
260 | return -EINVAL; | |
261 | ||
262 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
263 | return -EPERM; | |
264 | ||
265 | ret = fm_rx_get_band_freq_range(fmdev, &bottom_freq, &top_freq); | |
266 | if (ret != 0) | |
267 | return ret; | |
268 | ||
269 | ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode); | |
270 | if (ret != 0) | |
271 | return ret; | |
272 | ||
273 | ret = fm_rx_get_rssi_level(fmdev, &rssilvl); | |
274 | if (ret != 0) | |
275 | return ret; | |
276 | ||
277 | strcpy(tuner->name, "FM"); | |
278 | tuner->type = V4L2_TUNER_RADIO; | |
279 | /* Store rangelow and rangehigh freq in unit of 62.5 Hz */ | |
280 | tuner->rangelow = bottom_freq * 16; | |
281 | tuner->rangehigh = top_freq * 16; | |
282 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO | | |
283 | ((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0); | |
284 | tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | | |
285 | V4L2_TUNER_CAP_LOW; | |
286 | tuner->audmode = (stereo_mono_mode ? | |
287 | V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO); | |
288 | ||
289 | /* | |
290 | * Actual rssi value lies in between -128 to +127. | |
291 | * Convert this range from 0 to 255 by adding +128 | |
292 | */ | |
293 | rssilvl += 128; | |
294 | ||
295 | /* | |
296 | * Return signal strength value should be within 0 to 65535. | |
297 | * Find out correct signal radio by multiplying (65535/255) = 257 | |
298 | */ | |
299 | tuner->signal = rssilvl * 257; | |
300 | tuner->afc = 0; | |
301 | ||
302 | return ret; | |
303 | } | |
304 | ||
305 | /* | |
306 | * Set tuner attributes. If current mode is NOT RX, set to RX. | |
307 | * Currently, we set only audio mode (mono/stereo) and RDS state (on/off). | |
308 | * Should we set other tuner attributes, too? | |
309 | */ | |
310 | static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv, | |
311 | struct v4l2_tuner *tuner) | |
312 | { | |
313 | struct fmdev *fmdev = video_drvdata(file); | |
314 | u16 aud_mode; | |
315 | u8 rds_mode; | |
316 | int ret; | |
317 | ||
318 | if (tuner->index != 0) | |
319 | return -EINVAL; | |
320 | ||
321 | aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ? | |
322 | FM_STEREO_MODE : FM_MONO_MODE; | |
323 | rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ? | |
324 | FM_RDS_ENABLE : FM_RDS_DISABLE; | |
325 | ||
326 | if (fmdev->curr_fmmode != FM_MODE_RX) { | |
327 | ret = fmc_set_mode(fmdev, FM_MODE_RX); | |
328 | if (ret < 0) { | |
329 | fmerr("Failed to set RX mode\n"); | |
330 | return ret; | |
331 | } | |
332 | } | |
333 | ||
334 | ret = fmc_set_stereo_mono(fmdev, aud_mode); | |
335 | if (ret < 0) { | |
336 | fmerr("Failed to set RX stereo/mono mode\n"); | |
337 | return ret; | |
338 | } | |
339 | ||
340 | ret = fmc_set_rds_mode(fmdev, rds_mode); | |
341 | if (ret < 0) | |
342 | fmerr("Failed to set RX RDS mode\n"); | |
343 | ||
344 | return ret; | |
345 | } | |
346 | ||
347 | /* Get tuner or modulator radio frequency */ | |
348 | static int fm_v4l2_vidioc_g_freq(struct file *file, void *priv, | |
349 | struct v4l2_frequency *freq) | |
350 | { | |
351 | struct fmdev *fmdev = video_drvdata(file); | |
352 | int ret; | |
353 | ||
354 | ret = fmc_get_freq(fmdev, &freq->frequency); | |
355 | if (ret < 0) { | |
356 | fmerr("Failed to get frequency\n"); | |
357 | return ret; | |
358 | } | |
359 | ||
360 | /* Frequency unit of 62.5 Hz*/ | |
361 | freq->frequency = (u32) freq->frequency * 16; | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
366 | /* Set tuner or modulator radio frequency */ | |
367 | static int fm_v4l2_vidioc_s_freq(struct file *file, void *priv, | |
368 | struct v4l2_frequency *freq) | |
369 | { | |
370 | struct fmdev *fmdev = video_drvdata(file); | |
371 | ||
372 | /* | |
373 | * As V4L2_TUNER_CAP_LOW is set 1 user sends the frequency | |
374 | * in units of 62.5 Hz. | |
375 | */ | |
376 | freq->frequency = (u32)(freq->frequency / 16); | |
377 | ||
378 | return fmc_set_freq(fmdev, freq->frequency); | |
379 | } | |
380 | ||
381 | /* Set hardware frequency seek. If current mode is NOT RX, set it RX. */ | |
382 | static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv, | |
383 | struct v4l2_hw_freq_seek *seek) | |
384 | { | |
385 | struct fmdev *fmdev = video_drvdata(file); | |
386 | int ret; | |
387 | ||
388 | if (fmdev->curr_fmmode != FM_MODE_RX) { | |
389 | ret = fmc_set_mode(fmdev, FM_MODE_RX); | |
390 | if (ret != 0) { | |
391 | fmerr("Failed to set RX mode\n"); | |
392 | return ret; | |
393 | } | |
394 | } | |
395 | ||
396 | ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around, | |
397 | seek->spacing); | |
398 | if (ret < 0) | |
399 | fmerr("RX seek failed - %d\n", ret); | |
400 | ||
401 | return ret; | |
402 | } | |
403 | /* Get modulator attributes. If mode is not TX, return no attributes. */ | |
404 | static int fm_v4l2_vidioc_g_modulator(struct file *file, void *priv, | |
405 | struct v4l2_modulator *mod) | |
406 | { | |
407 | struct fmdev *fmdev = video_drvdata(file);; | |
408 | ||
409 | if (mod->index != 0) | |
410 | return -EINVAL; | |
411 | ||
412 | if (fmdev->curr_fmmode != FM_MODE_TX) | |
413 | return -EPERM; | |
414 | ||
415 | mod->txsubchans = ((fmdev->tx_data.aud_mode == FM_STEREO_MODE) ? | |
416 | V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO) | | |
417 | ((fmdev->tx_data.rds.flag == FM_RDS_ENABLE) ? | |
418 | V4L2_TUNER_SUB_RDS : 0); | |
419 | ||
420 | mod->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS | | |
421 | V4L2_TUNER_CAP_LOW; | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
426 | /* Set modulator attributes. If mode is not TX, set to TX. */ | |
427 | static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv, | |
428 | struct v4l2_modulator *mod) | |
429 | { | |
430 | struct fmdev *fmdev = video_drvdata(file); | |
431 | u8 rds_mode; | |
432 | u16 aud_mode; | |
433 | int ret; | |
434 | ||
435 | if (mod->index != 0) | |
436 | return -EINVAL; | |
437 | ||
438 | if (fmdev->curr_fmmode != FM_MODE_TX) { | |
439 | ret = fmc_set_mode(fmdev, FM_MODE_TX); | |
440 | if (ret != 0) { | |
441 | fmerr("Failed to set TX mode\n"); | |
442 | return ret; | |
443 | } | |
444 | } | |
445 | ||
446 | aud_mode = (mod->txsubchans & V4L2_TUNER_SUB_STEREO) ? | |
447 | FM_STEREO_MODE : FM_MONO_MODE; | |
448 | rds_mode = (mod->txsubchans & V4L2_TUNER_SUB_RDS) ? | |
449 | FM_RDS_ENABLE : FM_RDS_DISABLE; | |
450 | ret = fm_tx_set_stereo_mono(fmdev, aud_mode); | |
451 | if (ret < 0) { | |
452 | fmerr("Failed to set mono/stereo mode for TX\n"); | |
453 | return ret; | |
454 | } | |
455 | ret = fm_tx_set_rds_mode(fmdev, rds_mode); | |
456 | if (ret < 0) | |
457 | fmerr("Failed to set rds mode for TX\n"); | |
458 | ||
459 | return ret; | |
460 | } | |
461 | ||
462 | static const struct v4l2_file_operations fm_drv_fops = { | |
463 | .owner = THIS_MODULE, | |
464 | .read = fm_v4l2_fops_read, | |
465 | .write = fm_v4l2_fops_write, | |
466 | .poll = fm_v4l2_fops_poll, | |
467 | .unlocked_ioctl = video_ioctl2, | |
468 | .open = fm_v4l2_fops_open, | |
469 | .release = fm_v4l2_fops_release, | |
470 | }; | |
471 | ||
472 | static const struct v4l2_ctrl_ops fm_ctrl_ops = { | |
473 | .s_ctrl = fm_v4l2_s_ctrl, | |
474 | .g_volatile_ctrl = fm_g_volatile_ctrl, | |
475 | }; | |
476 | static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = { | |
477 | .vidioc_querycap = fm_v4l2_vidioc_querycap, | |
478 | .vidioc_g_audio = fm_v4l2_vidioc_g_audio, | |
479 | .vidioc_s_audio = fm_v4l2_vidioc_s_audio, | |
480 | .vidioc_g_tuner = fm_v4l2_vidioc_g_tuner, | |
481 | .vidioc_s_tuner = fm_v4l2_vidioc_s_tuner, | |
482 | .vidioc_g_frequency = fm_v4l2_vidioc_g_freq, | |
483 | .vidioc_s_frequency = fm_v4l2_vidioc_s_freq, | |
484 | .vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek, | |
485 | .vidioc_g_modulator = fm_v4l2_vidioc_g_modulator, | |
486 | .vidioc_s_modulator = fm_v4l2_vidioc_s_modulator | |
487 | }; | |
488 | ||
489 | /* V4L2 RADIO device parent structure */ | |
490 | static struct video_device fm_viddev_template = { | |
491 | .fops = &fm_drv_fops, | |
492 | .ioctl_ops = &fm_drv_ioctl_ops, | |
493 | .name = FM_DRV_NAME, | |
494 | .release = video_device_release, | |
495 | }; | |
496 | ||
497 | int fm_v4l2_init_video_device(struct fmdev *fmdev, int radio_nr) | |
498 | { | |
499 | struct v4l2_ctrl *ctrl; | |
500 | int ret; | |
501 | ||
502 | /* Init mutex for core locking */ | |
503 | mutex_init(&fmdev->mutex); | |
504 | ||
505 | /* Allocate new video device */ | |
506 | gradio_dev = video_device_alloc(); | |
507 | if (NULL == gradio_dev) { | |
508 | fmerr("Can't allocate video device\n"); | |
509 | return -ENOMEM; | |
510 | } | |
511 | ||
512 | /* Setup FM driver's V4L2 properties */ | |
513 | memcpy(gradio_dev, &fm_viddev_template, sizeof(fm_viddev_template)); | |
514 | ||
515 | video_set_drvdata(gradio_dev, fmdev); | |
516 | ||
517 | gradio_dev->lock = &fmdev->mutex; | |
518 | ||
519 | /* Register with V4L2 subsystem as RADIO device */ | |
520 | if (video_register_device(gradio_dev, VFL_TYPE_RADIO, radio_nr)) { | |
521 | video_device_release(gradio_dev); | |
522 | fmerr("Could not register video device\n"); | |
523 | return -ENOMEM; | |
524 | } | |
525 | ||
526 | fmdev->radio_dev = gradio_dev; | |
527 | ||
528 | /* Register to v4l2 ctrl handler framework */ | |
529 | fmdev->radio_dev->ctrl_handler = &fmdev->ctrl_handler; | |
530 | ||
531 | ret = v4l2_ctrl_handler_init(&fmdev->ctrl_handler, 5); | |
532 | if (ret < 0) { | |
533 | fmerr("(fmdev): Can't init ctrl handler\n"); | |
534 | v4l2_ctrl_handler_free(&fmdev->ctrl_handler); | |
535 | return -EBUSY; | |
536 | } | |
537 | ||
538 | /* | |
539 | * Following controls are handled by V4L2 control framework. | |
540 | * Added in ascending ID order. | |
541 | */ | |
542 | v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
543 | V4L2_CID_AUDIO_VOLUME, FM_RX_VOLUME_MIN, | |
544 | FM_RX_VOLUME_MAX, 1, FM_RX_VOLUME_MAX); | |
545 | ||
546 | v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
547 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
548 | ||
549 | v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
550 | V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS, | |
551 | 0, V4L2_PREEMPHASIS_75_uS); | |
552 | ||
553 | v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
554 | V4L2_CID_TUNE_POWER_LEVEL, FM_PWR_LVL_LOW, | |
555 | FM_PWR_LVL_HIGH, 1, FM_PWR_LVL_HIGH); | |
556 | ||
557 | ctrl = v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops, | |
558 | V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, | |
559 | 255, 1, 255); | |
560 | ||
561 | if (ctrl) | |
88365105 | 562 | ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; |
7e388496 MH |
563 | |
564 | return 0; | |
565 | } | |
566 | ||
567 | void *fm_v4l2_deinit_video_device(void) | |
568 | { | |
569 | struct fmdev *fmdev; | |
570 | ||
571 | ||
572 | fmdev = video_get_drvdata(gradio_dev); | |
573 | ||
574 | /* Unregister to v4l2 ctrl handler framework*/ | |
575 | v4l2_ctrl_handler_free(&fmdev->ctrl_handler); | |
576 | ||
577 | /* Unregister RADIO device from V4L2 subsystem */ | |
578 | video_unregister_device(gradio_dev); | |
579 | ||
580 | return fmdev; | |
581 | } |