[mirror_ubuntu-artful-kernel.git] / drivers / media / pci / cx18 / cx18-controls.c

/*
 *  cx18 ioctl control functions
 *
 *  Derived from ivtv-controls.c
 *
 *  Copyright (C) 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 "cx18-driver.h"
#include "cx18-cards.h"
#include "cx18-ioctl.h"
#include "cx18-audio.h"
#include "cx18-mailbox.h"
#include "cx18-controls.h"

static int cx18_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
{
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
	int type = cxhdl->stream_type->val;

	if (atomic_read(&cx->ana_capturing) > 0)
		return -EBUSY;

	if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
	    !(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS ||
	      type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD ||
	      type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
		/* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
		cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
		CX18_DEBUG_INFO("disabled insertion of sliced VBI data into the MPEG stream\n");
		return 0;
	}

	/* Allocate sliced VBI buffers if needed. */
	if (cx->vbi.sliced_mpeg_data[0] == NULL) {
		int i;

		for (i = 0; i < CX18_VBI_FRAMES; i++) {
			cx->vbi.sliced_mpeg_data[i] =
			       kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
			if (cx->vbi.sliced_mpeg_data[i] == NULL) {
				while (--i >= 0) {
					kfree(cx->vbi.sliced_mpeg_data[i]);
					cx->vbi.sliced_mpeg_data[i] = NULL;
				}
				cx->vbi.insert_mpeg =
						  V4L2_MPEG_STREAM_VBI_FMT_NONE;
				CX18_WARN("Unable to allocate buffers for sliced VBI data insertion\n");
				return -ENOMEM;
			}
		}
	}

	cx->vbi.insert_mpeg = fmt;
	CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,when sliced VBI is enabled\n");

	/*
	 * If our current settings have no lines set for capture, store a valid,
	 * default set of service lines to capture, in our current settings.
	 */
	if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
		if (cx->is_60hz)
			cx->vbi.sliced_in->service_set =
							V4L2_SLICED_CAPTION_525;
		else
			cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
		cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
	}
	return 0;
}

static int cx18_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
{
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
	int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
	struct v4l2_subdev_format format = {
		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
	};
	struct v4l2_mbus_framefmt *fmt = &format.format;

	/* fix videodecoder resolution */
	fmt->width = cxhdl->width / (is_mpeg1 ? 2 : 1);
	fmt->height = cxhdl->height;
	fmt->code = MEDIA_BUS_FMT_FIXED;
	v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
	return 0;
}

static int cx18_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
{
	static const u32 freqs[3] = { 44100, 48000, 32000 };
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);

	/* The audio clock of the digitizer must match the codec sample
	   rate otherwise you get some very strange effects. */
	if (idx < ARRAY_SIZE(freqs))
		cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
	return 0;
}

static int cx18_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
{
	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);

	cx->dualwatch_stereo_mode = val;
	return 0;
}

const struct cx2341x_handler_ops cx18_cxhdl_ops = {
	.s_audio_mode = cx18_s_audio_mode,
	.s_audio_sampling_freq = cx18_s_audio_sampling_freq,
	.s_video_encoding = cx18_s_video_encoding,
	.s_stream_vbi_fmt = cx18_s_stream_vbi_fmt,
};
Commit	Line	Data
1c1e45d1 HV	1	/*
	2	* cx18 ioctl control functions
	3	*
	4	* Derived from ivtv-controls.c
	5	*
	6	* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	21	* 02111-1307 USA
	22	*/
225aeb1c	23	#include <linux/kernel.h>
5a0e3ad6	24	#include <linux/slab.h>
1c1e45d1 HV	25
1c1e45d1 HV	26	#include "cx18-driver.h"
1c1e45d1 HV	27	#include "cx18-cards.h"
	28	#include "cx18-ioctl.h"
	29	#include "cx18-audio.h"
1c1e45d1 HV	30	#include "cx18-mailbox.h"
	31	#include "cx18-controls.h"
	32
a75b9be1	33	static int cx18_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
1c1e45d1	34	{
a75b9be1 HV	35	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
a75b9be1 HV	36	int type = cxhdl->stream_type->val;
ff2a2001	37
31554ae5	38	if (atomic_read(&cx->ana_capturing) > 0)
1c1e45d1 HV	39	return -EBUSY;
1c1e45d1 HV	40
49a53750	41	if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV \|\|
0c629252 AW	42	!(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS \|\|
	43	type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD \|\|
	44	type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
	45	/* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
49a53750	46	cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
6beb1388	47	CX18_DEBUG_INFO("disabled insertion of sliced VBI data into the MPEG stream\n");
49a53750 AW	48	return 0;
	49	}
	50
	51	/* Allocate sliced VBI buffers if needed. */
	52	if (cx->vbi.sliced_mpeg_data[0] == NULL) {
1c1e45d1 HV	53	int i;
	54
	55	for (i = 0; i < CX18_VBI_FRAMES; i++) {
302df970 AW	56	cx->vbi.sliced_mpeg_data[i] =
302df970 AW	57	kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
1c1e45d1 HV	58	if (cx->vbi.sliced_mpeg_data[i] == NULL) {
	59	while (--i >= 0) {
	60	kfree(cx->vbi.sliced_mpeg_data[i]);
	61	cx->vbi.sliced_mpeg_data[i] = NULL;
	62	}
49a53750 AW	63	cx->vbi.insert_mpeg =
49a53750 AW	64	V4L2_MPEG_STREAM_VBI_FMT_NONE;
6beb1388	65	CX18_WARN("Unable to allocate buffers for sliced VBI data insertion\n");
1c1e45d1 HV	66	return -ENOMEM;
	67	}
	68	}
	69	}
	70
	71	cx->vbi.insert_mpeg = fmt;
6beb1388	72	CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,when sliced VBI is enabled\n");
1c1e45d1	73
49a53750 AW	74	/*
	75	* If our current settings have no lines set for capture, store a valid,
	76	* default set of service lines to capture, in our current settings.
	77	*/
aed6abd6	78	if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
1c1e45d1	79	if (cx->is_60hz)
49a53750 AW	80	cx->vbi.sliced_in->service_set =
49a53750 AW	81	V4L2_SLICED_CAPTION_525;
1c1e45d1 HV	82	else
1c1e45d1 HV	83	cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
aed6abd6	84	cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
1c1e45d1 HV	85	}
	86	return 0;
	87	}
	88
a75b9be1	89	static int cx18_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
1c1e45d1	90	{
a75b9be1 HV	91	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
a75b9be1 HV	92	int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
ebf984bb HV	93	struct v4l2_subdev_format format = {
	94	.which = V4L2_SUBDEV_FORMAT_ACTIVE,
	95	};
	96	struct v4l2_mbus_framefmt *fmt = &format.format;
a75b9be1 HV	97
a75b9be1 HV	98	/* fix videodecoder resolution */
ebf984bb HV	99	fmt->width = cxhdl->width / (is_mpeg1 ? 2 : 1);
	100	fmt->height = cxhdl->height;
	101	fmt->code = MEDIA_BUS_FMT_FIXED;
	102	v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
a75b9be1	103	return 0;
3b6fe58f	104	}
1c1e45d1	105
a75b9be1	106	static int cx18_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
3b6fe58f	107	{
a75b9be1 HV	108	static const u32 freqs[3] = { 44100, 48000, 32000 };
a75b9be1 HV	109	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
1c1e45d1	110
a75b9be1 HV	111	/* The audio clock of the digitizer must match the codec sample
	112	rate otherwise you get some very strange effects. */
	113	if (idx < ARRAY_SIZE(freqs))
	114	cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
	115	return 0;
3b6fe58f	116	}
1c1e45d1	117
a75b9be1	118	static int cx18_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
3b6fe58f	119	{
a75b9be1	120	struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
3b6fe58f	121
a75b9be1 HV	122	cx->dualwatch_stereo_mode = val;
a75b9be1 HV	123	return 0;
1c1e45d1	124	}
a75b9be1	125
083206fc	126	const struct cx2341x_handler_ops cx18_cxhdl_ops = {
a75b9be1 HV	127	.s_audio_mode = cx18_s_audio_mode,
	128	.s_audio_sampling_freq = cx18_s_audio_sampling_freq,
	129	.s_video_encoding = cx18_s_video_encoding,
	130	.s_stream_vbi_fmt = cx18_s_stream_vbi_fmt,
	131	};