[linux-2.6-block.git] / drivers / media / video / ivtv / ivtv-controls.c

/*
    ioctl control functions
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <linux/kernel.h>
#include <linux/slab.h>

#include "ivtv-driver.h"
#include "ivtv-cards.h"
#include "ivtv-ioctl.h"
#include "ivtv-routing.h"
#include "ivtv-i2c.h"
#include "ivtv-mailbox.h"
#include "ivtv-controls.h"

/* Must be sorted from low to high control ID! */
static const u32 user_ctrls[] = {
	V4L2_CID_USER_CLASS,
	V4L2_CID_BRIGHTNESS,
	V4L2_CID_CONTRAST,
	V4L2_CID_SATURATION,
	V4L2_CID_HUE,
	V4L2_CID_AUDIO_VOLUME,
	V4L2_CID_AUDIO_BALANCE,
	V4L2_CID_AUDIO_BASS,
	V4L2_CID_AUDIO_TREBLE,
	V4L2_CID_AUDIO_MUTE,
	V4L2_CID_AUDIO_LOUDNESS,
	0
};

static const u32 *ctrl_classes[] = {
	user_ctrls,
	cx2341x_mpeg_ctrls,
	NULL
};


int ivtv_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	const char *name;

	qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
	if (qctrl->id == 0)
		return -EINVAL;

	switch (qctrl->id) {
	/* Standard V4L2 controls */
	case V4L2_CID_USER_CLASS:
		return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
	case V4L2_CID_BRIGHTNESS:
	case V4L2_CID_HUE:
	case V4L2_CID_SATURATION:
	case V4L2_CID_CONTRAST:
		if (v4l2_subdev_call(itv->sd_video, core, queryctrl, qctrl))
			qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
		return 0;

	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_MUTE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_LOUDNESS:
		if (v4l2_subdev_call(itv->sd_audio, core, queryctrl, qctrl))
			qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
		return 0;

	default:
		if (cx2341x_ctrl_query(&itv->params, qctrl))
			qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
		return 0;
	}
	strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
	qctrl->name[sizeof(qctrl->name) - 1] = 0;
	return 0;
}

int ivtv_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	struct v4l2_queryctrl qctrl;

	qctrl.id = qmenu->id;
	ivtv_queryctrl(file, fh, &qctrl);
	return v4l2_ctrl_query_menu(qmenu, &qctrl,
			cx2341x_ctrl_get_menu(&itv->params, qmenu->id));
}

static int ivtv_try_ctrl(struct file *file, void *fh,
					struct v4l2_ext_control *vctrl)
{
	struct v4l2_queryctrl qctrl;
	const char **menu_items = NULL;
	int err;

	qctrl.id = vctrl->id;
	err = ivtv_queryctrl(file, fh, &qctrl);
	if (err)
		return err;
	if (qctrl.type == V4L2_CTRL_TYPE_MENU)
		menu_items = v4l2_ctrl_get_menu(qctrl.id);
	return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
}

static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
{
	switch (vctrl->id) {
		/* Standard V4L2 controls */
	case V4L2_CID_BRIGHTNESS:
	case V4L2_CID_HUE:
	case V4L2_CID_SATURATION:
	case V4L2_CID_CONTRAST:
		return v4l2_subdev_call(itv->sd_video, core, s_ctrl, vctrl);

	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_MUTE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_LOUDNESS:
		return v4l2_subdev_call(itv->sd_audio, core, s_ctrl, vctrl);

	default:
		IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
		return -EINVAL;
	}
	return 0;
}

static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
{
	switch (vctrl->id) {
		/* Standard V4L2 controls */
	case V4L2_CID_BRIGHTNESS:
	case V4L2_CID_HUE:
	case V4L2_CID_SATURATION:
	case V4L2_CID_CONTRAST:
		return v4l2_subdev_call(itv->sd_video, core, g_ctrl, vctrl);

	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_MUTE:
	case V4L2_CID_AUDIO_BALANCE:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
	case V4L2_CID_AUDIO_LOUDNESS:
		return v4l2_subdev_call(itv->sd_audio, core, g_ctrl, vctrl);
	default:
		IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
		return -EINVAL;
	}
	return 0;
}

static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
{
	if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
		return -EINVAL;
	if (atomic_read(&itv->capturing) > 0)
		return -EBUSY;

	/* First try to allocate sliced VBI buffers if needed. */
	if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
		int i;

		for (i = 0; i < IVTV_VBI_FRAMES; i++) {
			/* Yuck, hardcoded. Needs to be a define */
			itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
			if (itv->vbi.sliced_mpeg_data[i] == NULL) {
				while (--i >= 0) {
					kfree(itv->vbi.sliced_mpeg_data[i]);
					itv->vbi.sliced_mpeg_data[i] = NULL;
				}
				return -ENOMEM;
			}
		}
	}

	itv->vbi.insert_mpeg = fmt;

	if (itv->vbi.insert_mpeg == 0) {
		return 0;
	}
	/* Need sliced data for mpeg insertion */
	if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
		if (itv->is_60hz)
			itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
		else
			itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
		ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
	}
	return 0;
}

int ivtv_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	struct v4l2_control ctrl;

	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
		int i;
		int err = 0;

		for (i = 0; i < c->count; i++) {
			ctrl.id = c->controls[i].id;
			ctrl.value = c->controls[i].value;
			err = ivtv_g_ctrl(itv, &ctrl);
			c->controls[i].value = ctrl.value;
			if (err) {
				c->error_idx = i;
				break;
			}
		}
		return err;
	}
	if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
		return cx2341x_ext_ctrls(&itv->params, 0, c, VIDIOC_G_EXT_CTRLS);
	return -EINVAL;
}

int ivtv_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
	struct v4l2_control ctrl;

	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
		int i;
		int err = 0;

		for (i = 0; i < c->count; i++) {
			ctrl.id = c->controls[i].id;
			ctrl.value = c->controls[i].value;
			err = ivtv_s_ctrl(itv, &ctrl);
			c->controls[i].value = ctrl.value;
			if (err) {
				c->error_idx = i;
				break;
			}
		}
		return err;
	}
	if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
		static u32 freqs[3] = { 44100, 48000, 32000 };
		struct cx2341x_mpeg_params p = itv->params;
		int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), c, VIDIOC_S_EXT_CTRLS);
		unsigned idx;

		if (err)
			return err;

		if (p.video_encoding != itv->params.video_encoding) {
			int is_mpeg1 = p.video_encoding ==
				V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
			struct v4l2_format fmt;

			/* fix videodecoder resolution */
			fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
			fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
			fmt.fmt.pix.height = itv->params.height;
			v4l2_subdev_call(itv->sd_video, video, s_fmt, &fmt);
		}
		err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
		if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt)
			err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
		itv->params = p;
		itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
		idx = p.audio_properties & 0x03;
		/* The audio clock of the digitizer must match the codec sample
		   rate otherwise you get some very strange effects. */
		if (idx < ARRAY_SIZE(freqs))
			ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
		return err;
	}
	return -EINVAL;
}

int ivtv_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
{
	struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;

	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
		int i;
		int err = 0;

		for (i = 0; i < c->count; i++) {
			err = ivtv_try_ctrl(file, fh, &c->controls[i]);
			if (err) {
				c->error_idx = i;
				break;
			}
		}
		return err;
	}
	if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
		return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), c, VIDIOC_TRY_EXT_CTRLS);
	return -EINVAL;
}
Commit	Line	Data
1a0adaf3 HV	1	/*
	2	ioctl control functions
	3	Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
	4	Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
ed18d0c8	20	#include <linux/kernel.h>
5a0e3ad6	21	#include <linux/slab.h>
1a0adaf3 HV	22
	23	#include "ivtv-driver.h"
	24	#include "ivtv-cards.h"
	25	#include "ivtv-ioctl.h"
33c0fcad	26	#include "ivtv-routing.h"
1a0adaf3 HV	27	#include "ivtv-i2c.h"
	28	#include "ivtv-mailbox.h"
	29	#include "ivtv-controls.h"
	30
2ba58894	31	/* Must be sorted from low to high control ID! */
1a0adaf3 HV	32	static const u32 user_ctrls[] = {
	33	V4L2_CID_USER_CLASS,
	34	V4L2_CID_BRIGHTNESS,
	35	V4L2_CID_CONTRAST,
	36	V4L2_CID_SATURATION,
	37	V4L2_CID_HUE,
	38	V4L2_CID_AUDIO_VOLUME,
	39	V4L2_CID_AUDIO_BALANCE,
	40	V4L2_CID_AUDIO_BASS,
	41	V4L2_CID_AUDIO_TREBLE,
	42	V4L2_CID_AUDIO_MUTE,
	43	V4L2_CID_AUDIO_LOUDNESS,
	44	0
	45	};
	46
	47	static const u32 *ctrl_classes[] = {
	48	user_ctrls,
	49	cx2341x_mpeg_ctrls,
	50	NULL
	51	};
	52
3f038d80 HV	53
3f038d80 HV	54	int ivtv_queryctrl(struct file file, void fh, struct v4l2_queryctrl *qctrl)
1a0adaf3	55	{
3f038d80	56	struct ivtv itv = ((struct ivtv_open_id )fh)->itv;
1a0adaf3 HV	57	const char *name;
1a0adaf3 HV	58
1a0adaf3 HV	59	qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
	60	if (qctrl->id == 0)
	61	return -EINVAL;
	62
	63	switch (qctrl->id) {
	64	/* Standard V4L2 controls */
c6711c3e HV	65	case V4L2_CID_USER_CLASS:
c6711c3e HV	66	return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
1a0adaf3 HV	67	case V4L2_CID_BRIGHTNESS:
	68	case V4L2_CID_HUE:
	69	case V4L2_CID_SATURATION:
	70	case V4L2_CID_CONTRAST:
67ec09fd	71	if (v4l2_subdev_call(itv->sd_video, core, queryctrl, qctrl))
1a0adaf3 HV	72	qctrl->flags \|= V4L2_CTRL_FLAG_DISABLED;
	73	return 0;
	74
	75	case V4L2_CID_AUDIO_VOLUME:
	76	case V4L2_CID_AUDIO_MUTE:
	77	case V4L2_CID_AUDIO_BALANCE:
	78	case V4L2_CID_AUDIO_BASS:
	79	case V4L2_CID_AUDIO_TREBLE:
	80	case V4L2_CID_AUDIO_LOUDNESS:
67ec09fd	81	if (v4l2_subdev_call(itv->sd_audio, core, queryctrl, qctrl))
1a0adaf3 HV	82	qctrl->flags \|= V4L2_CTRL_FLAG_DISABLED;
	83	return 0;
	84
	85	default:
	86	if (cx2341x_ctrl_query(&itv->params, qctrl))
	87	qctrl->flags \|= V4L2_CTRL_FLAG_DISABLED;
	88	return 0;
	89	}
	90	strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
	91	qctrl->name[sizeof(qctrl->name) - 1] = 0;
	92	return 0;
	93	}
	94
3f038d80	95	int ivtv_querymenu(struct file file, void fh, struct v4l2_querymenu *qmenu)
1a0adaf3	96	{
e0e31cdb	97	struct ivtv itv = ((struct ivtv_open_id )fh)->itv;
1a0adaf3 HV	98	struct v4l2_queryctrl qctrl;
	99
	100	qctrl.id = qmenu->id;
3f038d80	101	ivtv_queryctrl(file, fh, &qctrl);
e0e31cdb HV	102	return v4l2_ctrl_query_menu(qmenu, &qctrl,
e0e31cdb HV	103	cx2341x_ctrl_get_menu(&itv->params, qmenu->id));
1a0adaf3 HV	104	}
1a0adaf3 HV	105
adb65bc7 HV	106	static int ivtv_try_ctrl(struct file file, void fh,
adb65bc7 HV	107	struct v4l2_ext_control *vctrl)
1a0adaf3	108	{
adb65bc7 HV	109	struct v4l2_queryctrl qctrl;
	110	const char **menu_items = NULL;
	111	int err;
	112
	113	qctrl.id = vctrl->id;
	114	err = ivtv_queryctrl(file, fh, &qctrl);
	115	if (err)
	116	return err;
	117	if (qctrl.type == V4L2_CTRL_TYPE_MENU)
	118	menu_items = v4l2_ctrl_get_menu(qctrl.id);
	119	return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
	120	}
1a0adaf3	121
adb65bc7 HV	122	static int ivtv_s_ctrl(struct ivtv itv, struct v4l2_control vctrl)
adb65bc7 HV	123	{
1a0adaf3 HV	124	switch (vctrl->id) {
	125	/* Standard V4L2 controls */
	126	case V4L2_CID_BRIGHTNESS:
	127	case V4L2_CID_HUE:
	128	case V4L2_CID_SATURATION:
	129	case V4L2_CID_CONTRAST:
67ec09fd	130	return v4l2_subdev_call(itv->sd_video, core, s_ctrl, vctrl);
1a0adaf3 HV	131
	132	case V4L2_CID_AUDIO_VOLUME:
	133	case V4L2_CID_AUDIO_MUTE:
	134	case V4L2_CID_AUDIO_BALANCE:
	135	case V4L2_CID_AUDIO_BASS:
	136	case V4L2_CID_AUDIO_TREBLE:
	137	case V4L2_CID_AUDIO_LOUDNESS:
67ec09fd	138	return v4l2_subdev_call(itv->sd_audio, core, s_ctrl, vctrl);
1a0adaf3 HV	139
1a0adaf3 HV	140	default:
37f89f95	141	IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
1a0adaf3 HV	142	return -EINVAL;
	143	}
	144	return 0;
	145	}
	146
adb65bc7	147	static int ivtv_g_ctrl(struct ivtv itv, struct v4l2_control vctrl)
1a0adaf3	148	{
1a0adaf3 HV	149	switch (vctrl->id) {
	150	/* Standard V4L2 controls */
	151	case V4L2_CID_BRIGHTNESS:
	152	case V4L2_CID_HUE:
	153	case V4L2_CID_SATURATION:
	154	case V4L2_CID_CONTRAST:
67ec09fd	155	return v4l2_subdev_call(itv->sd_video, core, g_ctrl, vctrl);
1a0adaf3 HV	156
	157	case V4L2_CID_AUDIO_VOLUME:
	158	case V4L2_CID_AUDIO_MUTE:
	159	case V4L2_CID_AUDIO_BALANCE:
	160	case V4L2_CID_AUDIO_BASS:
	161	case V4L2_CID_AUDIO_TREBLE:
	162	case V4L2_CID_AUDIO_LOUDNESS:
67ec09fd	163	return v4l2_subdev_call(itv->sd_audio, core, g_ctrl, vctrl);
1a0adaf3	164	default:
37f89f95	165	IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
1a0adaf3 HV	166	return -EINVAL;
	167	}
	168	return 0;
	169	}
	170
	171	static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
	172	{
	173	if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
	174	return -EINVAL;
	175	if (atomic_read(&itv->capturing) > 0)
	176	return -EBUSY;
	177
	178	/* First try to allocate sliced VBI buffers if needed. */
	179	if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
	180	int i;
	181
	182	for (i = 0; i < IVTV_VBI_FRAMES; i++) {
	183	/* Yuck, hardcoded. Needs to be a define */
	184	itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
	185	if (itv->vbi.sliced_mpeg_data[i] == NULL) {
	186	while (--i >= 0) {
	187	kfree(itv->vbi.sliced_mpeg_data[i]);
	188	itv->vbi.sliced_mpeg_data[i] = NULL;
	189	}
	190	return -ENOMEM;
	191	}
	192	}
	193	}
	194
	195	itv->vbi.insert_mpeg = fmt;
	196
	197	if (itv->vbi.insert_mpeg == 0) {
	198	return 0;
	199	}
	200	/* Need sliced data for mpeg insertion */
feb5bce2	201	if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
1a0adaf3 HV	202	if (itv->is_60hz)
	203	itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
	204	else
	205	itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
feb5bce2	206	ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
1a0adaf3 HV	207	}
	208	return 0;
	209	}
	210
3f038d80	211	int ivtv_g_ext_ctrls(struct file file, void fh, struct v4l2_ext_controls *c)
1a0adaf3	212	{
3f038d80	213	struct ivtv itv = ((struct ivtv_open_id )fh)->itv;
1a0adaf3 HV	214	struct v4l2_control ctrl;
1a0adaf3 HV	215
3f038d80 HV	216	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
	217	int i;
	218	int err = 0;
	219
	220	for (i = 0; i < c->count; i++) {
	221	ctrl.id = c->controls[i].id;
	222	ctrl.value = c->controls[i].value;
adb65bc7	223	err = ivtv_g_ctrl(itv, &ctrl);
3f038d80 HV	224	c->controls[i].value = ctrl.value;
	225	if (err) {
	226	c->error_idx = i;
	227	break;
1a0adaf3	228	}
1a0adaf3	229	}
3f038d80	230	return err;
1a0adaf3	231	}
3f038d80 HV	232	if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
	233	return cx2341x_ext_ctrls(&itv->params, 0, c, VIDIOC_G_EXT_CTRLS);
	234	return -EINVAL;
	235	}
1a0adaf3	236
3f038d80 HV	237	int ivtv_s_ext_ctrls(struct file file, void fh, struct v4l2_ext_controls *c)
	238	{
	239	struct ivtv itv = ((struct ivtv_open_id )fh)->itv;
	240	struct v4l2_control ctrl;
	241
	242	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
	243	int i;
	244	int err = 0;
	245
	246	for (i = 0; i < c->count; i++) {
	247	ctrl.id = c->controls[i].id;
	248	ctrl.value = c->controls[i].value;
adb65bc7	249	err = ivtv_s_ctrl(itv, &ctrl);
3f038d80 HV	250	c->controls[i].value = ctrl.value;
	251	if (err) {
	252	c->error_idx = i;
	253	break;
1a0adaf3	254	}
1a0adaf3	255	}
3f038d80	256	return err;
1a0adaf3	257	}
3f038d80 HV	258	if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
	259	static u32 freqs[3] = { 44100, 48000, 32000 };
	260	struct cx2341x_mpeg_params p = itv->params;
	261	int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), c, VIDIOC_S_EXT_CTRLS);
	262	unsigned idx;
	263
	264	if (err)
	265	return err;
1a0adaf3	266
3f038d80 HV	267	if (p.video_encoding != itv->params.video_encoding) {
	268	int is_mpeg1 = p.video_encoding ==
	269	V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
	270	struct v4l2_format fmt;
1a0adaf3	271
3f038d80 HV	272	/* fix videodecoder resolution */
	273	fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	274	fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
	275	fmt.fmt.pix.height = itv->params.height;
67ec09fd	276	v4l2_subdev_call(itv->sd_video, video, s_fmt, &fmt);
3f038d80 HV	277	}
	278	err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
	279	if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt)
	280	err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
	281	itv->params = p;
	282	itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
	283	idx = p.audio_properties & 0x03;
	284	/* The audio clock of the digitizer must match the codec sample
	285	rate otherwise you get some very strange effects. */
ed18d0c8	286	if (idx < ARRAY_SIZE(freqs))
67ec09fd	287	ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
3f038d80	288	return err;
1a0adaf3	289	}
3f038d80 HV	290	return -EINVAL;
3f038d80 HV	291	}
1a0adaf3	292
3f038d80 HV	293	int ivtv_try_ext_ctrls(struct file file, void fh, struct v4l2_ext_controls *c)
	294	{
	295	struct ivtv itv = ((struct ivtv_open_id )fh)->itv;
	296
adb65bc7 HV	297	if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
	298	int i;
	299	int err = 0;
	300
	301	for (i = 0; i < c->count; i++) {
	302	err = ivtv_try_ctrl(file, fh, &c->controls[i]);
	303	if (err) {
	304	c->error_idx = i;
	305	break;
	306	}
	307	}
	308	return err;
	309	}
3f038d80 HV	310	if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
	311	return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), c, VIDIOC_TRY_EXT_CTRLS);
	312	return -EINVAL;
1a0adaf3	313	}