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Diffstat (limited to 'extras/recipes-kernel/linux/linux-omap/wl1271/0008-drivers-media-radio-wl128x-FM-Driver-V4L2-sources.patch')
-rw-r--r--extras/recipes-kernel/linux/linux-omap/wl1271/0008-drivers-media-radio-wl128x-FM-Driver-V4L2-sources.patch645
1 files changed, 645 insertions, 0 deletions
diff --git a/extras/recipes-kernel/linux/linux-omap/wl1271/0008-drivers-media-radio-wl128x-FM-Driver-V4L2-sources.patch b/extras/recipes-kernel/linux/linux-omap/wl1271/0008-drivers-media-radio-wl128x-FM-Driver-V4L2-sources.patch
new file mode 100644
index 00000000..c3eae97f
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap/wl1271/0008-drivers-media-radio-wl128x-FM-Driver-V4L2-sources.patch
@@ -0,0 +1,645 @@
1From d532e33a286ec2275b441c05675de52cd5b069d2 Mon Sep 17 00:00:00 2001
2From: Manjunatha Halli <manjunatha_halli@ti.com>
3Date: Tue, 11 Jan 2011 11:31:22 +0000
4Subject: [PATCH 08/15] drivers:media:radio: wl128x: FM Driver V4L2 sources
5
6This module interfaces V4L2 subsystem and FM common module.
7It registers itself with V4L2 as Radio module.
8
9Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
10Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
11---
12 drivers/media/radio/wl128x/fmdrv_v4l2.c | 580 +++++++++++++++++++++++++++++++
13 drivers/media/radio/wl128x/fmdrv_v4l2.h | 33 ++
14 2 files changed, 613 insertions(+), 0 deletions(-)
15 create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.c
16 create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.h
17
18diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
19new file mode 100644
20index 0000000..d50e5ac
21--- /dev/null
22+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
23@@ -0,0 +1,580 @@
24+/*
25+ * FM Driver for Connectivity chip of Texas Instruments.
26+ * This file provides interfaces to V4L2 subsystem.
27+ *
28+ * This module registers with V4L2 subsystem as Radio
29+ * data system interface (/dev/radio). During the registration,
30+ * it will expose two set of function pointers.
31+ *
32+ * 1) File operation related API (open, close, read, write, poll...etc).
33+ * 2) Set of V4L2 IOCTL complaint API.
34+ *
35+ * Copyright (C) 2011 Texas Instruments
36+ * Author: Raja Mani <raja_mani@ti.com>
37+ * Author: Manjunatha Halli <manjunatha_halli@ti.com>
38+ *
39+ * This program is free software; you can redistribute it and/or modify
40+ * it under the terms of the GNU General Public License version 2 as
41+ * published by the Free Software Foundation.
42+ *
43+ * This program is distributed in the hope that it will be useful,
44+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
45+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
46+ * GNU General Public License for more details.
47+ *
48+ * You should have received a copy of the GNU General Public License
49+ * along with this program; if not, write to the Free Software
50+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
51+ *
52+ */
53+
54+#include "fmdrv.h"
55+#include "fmdrv_v4l2.h"
56+#include "fmdrv_common.h"
57+#include "fmdrv_rx.h"
58+#include "fmdrv_tx.h"
59+
60+static struct video_device *gradio_dev;
61+static u8 radio_disconnected;
62+
63+/* -- V4L2 RADIO (/dev/radioX) device file operation interfaces --- */
64+
65+/* Read RX RDS data */
66+static ssize_t fm_v4l2_fops_read(struct file *file, char __user * buf,
67+ size_t count, loff_t *ppos)
68+{
69+ u8 rds_mode;
70+ int ret;
71+ struct fmdev *fmdev;
72+
73+ fmdev = video_drvdata(file);
74+
75+ if (!radio_disconnected) {
76+ fmerr("FM device is already disconnected\n");
77+ return -EIO;
78+ }
79+
80+ /* Turn on RDS mode , if it is disabled */
81+ ret = fm_rx_get_rds_mode(fmdev, &rds_mode);
82+ if (ret < 0) {
83+ fmerr("Unable to read current rds mode\n");
84+ return ret;
85+ }
86+
87+ if (rds_mode == FM_RDS_DISABLE) {
88+ ret = fmc_set_rds_mode(fmdev, FM_RDS_ENABLE);
89+ if (ret < 0) {
90+ fmerr("Failed to enable rds mode\n");
91+ return ret;
92+ }
93+ }
94+
95+ /* Copy RDS data from internal buffer to user buffer */
96+ return fmc_transfer_rds_from_internal_buff(fmdev, file, buf, count);
97+}
98+
99+/* Write TX RDS data */
100+static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf,
101+ size_t count, loff_t *ppos)
102+{
103+ struct tx_rds rds;
104+ int ret;
105+ struct fmdev *fmdev;
106+
107+ ret = copy_from_user(&rds, buf, sizeof(rds));
108+ fmdbg("(%d)type: %d, text %s, af %d\n",
109+ ret, rds.text_type, rds.text, rds.af_freq);
110+
111+ fmdev = video_drvdata(file);
112+ fm_tx_set_radio_text(fmdev, rds.text, rds.text_type);
113+ fm_tx_set_af(fmdev, rds.af_freq);
114+
115+ return 0;
116+}
117+
118+static u32 fm_v4l2_fops_poll(struct file *file, struct poll_table_struct *pts)
119+{
120+ int ret;
121+ struct fmdev *fmdev;
122+
123+ fmdev = video_drvdata(file);
124+ ret = fmc_is_rds_data_available(fmdev, file, pts);
125+ if (ret < 0)
126+ return POLLIN | POLLRDNORM;
127+
128+ return 0;
129+}
130+
131+/*
132+ * Handle open request for "/dev/radioX" device.
133+ * Start with FM RX mode as default.
134+ */
135+static int fm_v4l2_fops_open(struct file *file)
136+{
137+ int ret;
138+ struct fmdev *fmdev = NULL;
139+
140+ /* Don't allow multiple open */
141+ if (radio_disconnected) {
142+ fmerr("FM device is already opened\n");
143+ return -EBUSY;
144+ }
145+
146+ fmdev = video_drvdata(file);
147+
148+ ret = fmc_prepare(fmdev);
149+ if (ret < 0) {
150+ fmerr("Unable to prepare FM CORE\n");
151+ return ret;
152+ }
153+
154+ fmdbg("Load FM RX firmware..\n");
155+
156+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
157+ if (ret < 0) {
158+ fmerr("Unable to load FM RX firmware\n");
159+ return ret;
160+ }
161+ radio_disconnected = 1;
162+
163+ return ret;
164+}
165+
166+static int fm_v4l2_fops_release(struct file *file)
167+{
168+ int ret;
169+ struct fmdev *fmdev;
170+
171+ fmdev = video_drvdata(file);
172+ if (!radio_disconnected) {
173+ fmdbg("FM device is already closed\n");
174+ return 0;
175+ }
176+
177+ ret = fmc_set_mode(fmdev, FM_MODE_OFF);
178+ if (ret < 0) {
179+ fmerr("Unable to turn off the chip\n");
180+ return ret;
181+ }
182+
183+ ret = fmc_release(fmdev);
184+ if (ret < 0) {
185+ fmerr("FM CORE release failed\n");
186+ return ret;
187+ }
188+ radio_disconnected = 0;
189+
190+ return ret;
191+}
192+
193+/* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */
194+static int fm_v4l2_vidioc_querycap(struct file *file, void *priv,
195+ struct v4l2_capability *capability)
196+{
197+ strlcpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver));
198+ strlcpy(capability->card, FM_DRV_CARD_SHORT_NAME,
199+ sizeof(capability->card));
200+ sprintf(capability->bus_info, "UART");
201+ capability->version = FM_DRV_RADIO_VERSION;
202+ capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
203+ V4L2_CAP_RADIO | V4L2_CAP_MODULATOR |
204+ V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
205+ V4L2_CAP_RDS_CAPTURE;
206+
207+ return 0;
208+}
209+
210+static int fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
211+{
212+ struct fmdev *fmdev = container_of(ctrl->handler,
213+ struct fmdev, ctrl_handler);
214+
215+ switch (ctrl->id) {
216+ case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
217+ ctrl->val = fm_tx_get_tune_cap_val(fmdev);
218+ break;
219+ default:
220+ fmwarn("%s: Unknown IOCTL: %d\n", __func__, ctrl->id);
221+ break;
222+ }
223+
224+ return 0;
225+}
226+
227+static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl)
228+{
229+ struct fmdev *fmdev = container_of(ctrl->handler,
230+ struct fmdev, ctrl_handler);
231+
232+ switch (ctrl->id) {
233+ case V4L2_CID_AUDIO_VOLUME: /* set volume */
234+ return fm_rx_set_volume(fmdev, (u16)ctrl->val);
235+
236+ case V4L2_CID_AUDIO_MUTE: /* set mute */
237+ return fmc_set_mute_mode(fmdev, (u8)ctrl->val);
238+
239+ case V4L2_CID_TUNE_POWER_LEVEL:
240+ /* set TX power level - ext control */
241+ return fm_tx_set_pwr_lvl(fmdev, (u8)ctrl->val);
242+
243+ case V4L2_CID_TUNE_PREEMPHASIS:
244+ return fm_tx_set_preemph_filter(fmdev, (u8) ctrl->val);
245+
246+ default:
247+ return -EINVAL;
248+ }
249+}
250+
251+static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv,
252+ struct v4l2_audio *audio)
253+{
254+ memset(audio, 0, sizeof(*audio));
255+ strcpy(audio->name, "Radio");
256+ audio->capability = V4L2_AUDCAP_STEREO;
257+
258+ return 0;
259+}
260+
261+static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv,
262+ struct v4l2_audio *audio)
263+{
264+ if (audio->index != 0)
265+ return -EINVAL;
266+
267+ return 0;
268+}
269+
270+/* Get tuner attributes. If current mode is NOT RX, return error */
271+static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv,
272+ struct v4l2_tuner *tuner)
273+{
274+ struct fmdev *fmdev = video_drvdata(file);
275+ u32 bottom_freq;
276+ u32 top_freq;
277+ u16 stereo_mono_mode;
278+ u16 rssilvl;
279+ int ret;
280+
281+ if (tuner->index != 0)
282+ return -EINVAL;
283+
284+ if (fmdev->curr_fmmode != FM_MODE_RX)
285+ return -EPERM;
286+
287+ ret = fm_rx_get_band_freq_range(fmdev, &bottom_freq, &top_freq);
288+ if (ret != 0)
289+ return ret;
290+
291+ ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode);
292+ if (ret != 0)
293+ return ret;
294+
295+ ret = fm_rx_get_rssi_level(fmdev, &rssilvl);
296+ if (ret != 0)
297+ return ret;
298+
299+ strcpy(tuner->name, "FM");
300+ tuner->type = V4L2_TUNER_RADIO;
301+ /* Store rangelow and rangehigh freq in unit of 62.5 Hz */
302+ tuner->rangelow = bottom_freq * 16;
303+ tuner->rangehigh = top_freq * 16;
304+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO |
305+ ((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0);
306+ tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS |
307+ V4L2_TUNER_CAP_LOW;
308+ tuner->audmode = (stereo_mono_mode ?
309+ V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO);
310+
311+ /*
312+ * Actual rssi value lies in between -128 to +127.
313+ * Convert this range from 0 to 255 by adding +128
314+ */
315+ rssilvl += 128;
316+
317+ /*
318+ * Return signal strength value should be within 0 to 65535.
319+ * Find out correct signal radio by multiplying (65535/255) = 257
320+ */
321+ tuner->signal = rssilvl * 257;
322+ tuner->afc = 0;
323+
324+ return ret;
325+}
326+
327+/*
328+ * Set tuner attributes. If current mode is NOT RX, set to RX.
329+ * Currently, we set only audio mode (mono/stereo) and RDS state (on/off).
330+ * Should we set other tuner attributes, too?
331+ */
332+static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv,
333+ struct v4l2_tuner *tuner)
334+{
335+ struct fmdev *fmdev = video_drvdata(file);
336+ u16 aud_mode;
337+ u8 rds_mode;
338+ int ret;
339+
340+ if (tuner->index != 0)
341+ return -EINVAL;
342+
343+ aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ?
344+ FM_STEREO_MODE : FM_MONO_MODE;
345+ rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ?
346+ FM_RDS_ENABLE : FM_RDS_DISABLE;
347+
348+ if (fmdev->curr_fmmode != FM_MODE_RX) {
349+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
350+ if (ret < 0) {
351+ fmerr("Failed to set RX mode\n");
352+ return ret;
353+ }
354+ }
355+
356+ ret = fmc_set_stereo_mono(fmdev, aud_mode);
357+ if (ret < 0) {
358+ fmerr("Failed to set RX stereo/mono mode\n");
359+ return ret;
360+ }
361+
362+ ret = fmc_set_rds_mode(fmdev, rds_mode);
363+ if (ret < 0)
364+ fmerr("Failed to set RX RDS mode\n");
365+
366+ return ret;
367+}
368+
369+/* Get tuner or modulator radio frequency */
370+static int fm_v4l2_vidioc_g_freq(struct file *file, void *priv,
371+ struct v4l2_frequency *freq)
372+{
373+ struct fmdev *fmdev = video_drvdata(file);
374+ int ret;
375+
376+ ret = fmc_get_freq(fmdev, &freq->frequency);
377+ if (ret < 0) {
378+ fmerr("Failed to get frequency\n");
379+ return ret;
380+ }
381+
382+ /* Frequency unit of 62.5 Hz*/
383+ freq->frequency = (u32) freq->frequency * 16;
384+
385+ return 0;
386+}
387+
388+/* Set tuner or modulator radio frequency */
389+static int fm_v4l2_vidioc_s_freq(struct file *file, void *priv,
390+ struct v4l2_frequency *freq)
391+{
392+ struct fmdev *fmdev = video_drvdata(file);
393+
394+ /*
395+ * As V4L2_TUNER_CAP_LOW is set 1 user sends the frequency
396+ * in units of 62.5 Hz.
397+ */
398+ freq->frequency = (u32)(freq->frequency / 16);
399+
400+ return fmc_set_freq(fmdev, freq->frequency);
401+}
402+
403+/* Set hardware frequency seek. If current mode is NOT RX, set it RX. */
404+static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv,
405+ struct v4l2_hw_freq_seek *seek)
406+{
407+ struct fmdev *fmdev = video_drvdata(file);
408+ int ret;
409+
410+ if (fmdev->curr_fmmode != FM_MODE_RX) {
411+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
412+ if (ret != 0) {
413+ fmerr("Failed to set RX mode\n");
414+ return ret;
415+ }
416+ }
417+
418+ ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around,
419+ seek->spacing);
420+ if (ret < 0)
421+ fmerr("RX seek failed - %d\n", ret);
422+
423+ return ret;
424+}
425+/* Get modulator attributes. If mode is not TX, return no attributes. */
426+static int fm_v4l2_vidioc_g_modulator(struct file *file, void *priv,
427+ struct v4l2_modulator *mod)
428+{
429+ struct fmdev *fmdev = video_drvdata(file);;
430+
431+ if (mod->index != 0)
432+ return -EINVAL;
433+
434+ if (fmdev->curr_fmmode != FM_MODE_TX)
435+ return -EPERM;
436+
437+ mod->txsubchans = ((fmdev->tx_data.aud_mode == FM_STEREO_MODE) ?
438+ V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO) |
439+ ((fmdev->tx_data.rds.flag == FM_RDS_ENABLE) ?
440+ V4L2_TUNER_SUB_RDS : 0);
441+
442+ mod->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS |
443+ V4L2_TUNER_CAP_LOW;
444+
445+ return 0;
446+}
447+
448+/* Set modulator attributes. If mode is not TX, set to TX. */
449+static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv,
450+ struct v4l2_modulator *mod)
451+{
452+ struct fmdev *fmdev = video_drvdata(file);
453+ u8 rds_mode;
454+ u16 aud_mode;
455+ int ret;
456+
457+ if (mod->index != 0)
458+ return -EINVAL;
459+
460+ if (fmdev->curr_fmmode != FM_MODE_TX) {
461+ ret = fmc_set_mode(fmdev, FM_MODE_TX);
462+ if (ret != 0) {
463+ fmerr("Failed to set TX mode\n");
464+ return ret;
465+ }
466+ }
467+
468+ aud_mode = (mod->txsubchans & V4L2_TUNER_SUB_STEREO) ?
469+ FM_STEREO_MODE : FM_MONO_MODE;
470+ rds_mode = (mod->txsubchans & V4L2_TUNER_SUB_RDS) ?
471+ FM_RDS_ENABLE : FM_RDS_DISABLE;
472+ ret = fm_tx_set_stereo_mono(fmdev, aud_mode);
473+ if (ret < 0) {
474+ fmerr("Failed to set mono/stereo mode for TX\n");
475+ return ret;
476+ }
477+ ret = fm_tx_set_rds_mode(fmdev, rds_mode);
478+ if (ret < 0)
479+ fmerr("Failed to set rds mode for TX\n");
480+
481+ return ret;
482+}
483+
484+static const struct v4l2_file_operations fm_drv_fops = {
485+ .owner = THIS_MODULE,
486+ .read = fm_v4l2_fops_read,
487+ .write = fm_v4l2_fops_write,
488+ .poll = fm_v4l2_fops_poll,
489+ .unlocked_ioctl = video_ioctl2,
490+ .open = fm_v4l2_fops_open,
491+ .release = fm_v4l2_fops_release,
492+};
493+
494+static const struct v4l2_ctrl_ops fm_ctrl_ops = {
495+ .s_ctrl = fm_v4l2_s_ctrl,
496+ .g_volatile_ctrl = fm_g_volatile_ctrl,
497+};
498+static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = {
499+ .vidioc_querycap = fm_v4l2_vidioc_querycap,
500+ .vidioc_g_audio = fm_v4l2_vidioc_g_audio,
501+ .vidioc_s_audio = fm_v4l2_vidioc_s_audio,
502+ .vidioc_g_tuner = fm_v4l2_vidioc_g_tuner,
503+ .vidioc_s_tuner = fm_v4l2_vidioc_s_tuner,
504+ .vidioc_g_frequency = fm_v4l2_vidioc_g_freq,
505+ .vidioc_s_frequency = fm_v4l2_vidioc_s_freq,
506+ .vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek,
507+ .vidioc_g_modulator = fm_v4l2_vidioc_g_modulator,
508+ .vidioc_s_modulator = fm_v4l2_vidioc_s_modulator
509+};
510+
511+/* V4L2 RADIO device parent structure */
512+static struct video_device fm_viddev_template = {
513+ .fops = &fm_drv_fops,
514+ .ioctl_ops = &fm_drv_ioctl_ops,
515+ .name = FM_DRV_NAME,
516+ .release = video_device_release,
517+};
518+
519+int fm_v4l2_init_video_device(struct fmdev *fmdev, int radio_nr)
520+{
521+ struct v4l2_ctrl *ctrl;
522+ int ret;
523+
524+ /* Init mutex for core locking */
525+ mutex_init(&fmdev->mutex);
526+
527+ /* Allocate new video device */
528+ gradio_dev = video_device_alloc();
529+ if (NULL == gradio_dev) {
530+ fmerr("Can't allocate video device\n");
531+ return -ENOMEM;
532+ }
533+
534+ /* Setup FM driver's V4L2 properties */
535+ memcpy(gradio_dev, &fm_viddev_template, sizeof(fm_viddev_template));
536+
537+ video_set_drvdata(gradio_dev, fmdev);
538+
539+ gradio_dev->lock = &fmdev->mutex;
540+
541+ /* Register with V4L2 subsystem as RADIO device */
542+ if (video_register_device(gradio_dev, VFL_TYPE_RADIO, radio_nr)) {
543+ video_device_release(gradio_dev);
544+ fmerr("Could not register video device\n");
545+ return -ENOMEM;
546+ }
547+
548+ fmdev->radio_dev = gradio_dev;
549+
550+ /* Register to v4l2 ctrl handler framework */
551+ fmdev->radio_dev->ctrl_handler = &fmdev->ctrl_handler;
552+
553+ ret = v4l2_ctrl_handler_init(&fmdev->ctrl_handler, 5);
554+ if (ret < 0) {
555+ fmerr("(fmdev): Can't init ctrl handler\n");
556+ v4l2_ctrl_handler_free(&fmdev->ctrl_handler);
557+ return -EBUSY;
558+ }
559+
560+ /*
561+ * Following controls are handled by V4L2 control framework.
562+ * Added in ascending ID order.
563+ */
564+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
565+ V4L2_CID_AUDIO_VOLUME, FM_RX_VOLUME_MIN,
566+ FM_RX_VOLUME_MAX, 1, FM_RX_VOLUME_MAX);
567+
568+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
569+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
570+
571+ v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops,
572+ V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS,
573+ 0, V4L2_PREEMPHASIS_75_uS);
574+
575+ v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
576+ V4L2_CID_TUNE_POWER_LEVEL, FM_PWR_LVL_LOW,
577+ FM_PWR_LVL_HIGH, 1, FM_PWR_LVL_HIGH);
578+
579+ ctrl = v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
580+ V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0,
581+ 255, 1, 255);
582+
583+ if (ctrl)
584+ ctrl->is_volatile = 1;
585+
586+ return 0;
587+}
588+
589+void *fm_v4l2_deinit_video_device(void)
590+{
591+ struct fmdev *fmdev;
592+
593+
594+ fmdev = video_get_drvdata(gradio_dev);
595+
596+ /* Unregister to v4l2 ctrl handler framework*/
597+ v4l2_ctrl_handler_free(&fmdev->ctrl_handler);
598+
599+ /* Unregister RADIO device from V4L2 subsystem */
600+ video_unregister_device(gradio_dev);
601+
602+ return fmdev;
603+}
604diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.h b/drivers/media/radio/wl128x/fmdrv_v4l2.h
605new file mode 100644
606index 0000000..0ba79d7
607--- /dev/null
608+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.h
609@@ -0,0 +1,33 @@
610+/*
611+ * FM Driver for Connectivity chip of Texas Instruments.
612+ *
613+ * FM V4L2 module header.
614+ *
615+ * Copyright (C) 2011 Texas Instruments
616+ *
617+ * This program is free software; you can redistribute it and/or modify
618+ * it under the terms of the GNU General Public License version 2 as
619+ * published by the Free Software Foundation.
620+ *
621+ * This program is distributed in the hope that it will be useful,
622+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
623+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
624+ * GNU General Public License for more details.
625+ *
626+ * You should have received a copy of the GNU General Public License
627+ * along with this program; if not, write to the Free Software
628+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
629+ *
630+ */
631+
632+#ifndef _FMDRV_V4L2_H
633+#define _FMDRV_V4L2_H
634+
635+#include <media/v4l2-ioctl.h>
636+#include <media/v4l2-common.h>
637+#include <media/v4l2-ctrls.h>
638+
639+int fm_v4l2_init_video_device(struct fmdev *, int);
640+void *fm_v4l2_deinit_video_device(void);
641+
642+#endif
643--
6441.6.6.1
645
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